3 ton jib crane & 3 ton light duty pillar mounted jib crane for sale to Indonesia. Dongqi pillar mounted jib crane 3 ton is a kind of light duty jib crane, mainly consists of pillar device, rotating device, slewing device, electric hoist and fixing device, etc. The capacity of pillar jib crane can reach 0.5 ton to 16 ton, mainly used for short-distance frequent and intensive lifting operations.
Pillar Jib Crane Design for Indonesia Customer:
Lifting capacity is 3 ton. Lifting operation at radius ± 5m and lift height min. 3.75m.
Power Source: 3ph, 380V, 50HZ. Working Temperature: -25~+40°C.
Lifting mechanism: Electric Wire rope hoist.
Slewing Mechanism: Manual control type.
Max. slewing angle of pillar-mounted jib is 270°.
The Lower end of the column is fixed on the concrete foundation with anchor bolts.
The electric hoist, including chain hoist and wire rope hoist, is installed on the track of the rotation arm and travels along the track to lift and move heavy items.
Pillar Mounted Jib Crane Advantages:
The jib crane design and structure of this floor mounted jib crane is novel and reasonable.
The jib crane has light dead weight and is easy to use and operate.
Floor-mounted jib crane has flexible rotation and large operating space.
Pillar jib crane is energy-saving and efficient for materials and goods lifting and moving.
The jib crane works very reliably and safely with low noise.
Jib cranes can be customized according to customers’ special requirements.
Dongqi Jib Crane Safety Devices:
Crane traveling limit switch.
Weight overload protection device.
Lifting height limit device.
Voltage lower protection function.
Phase sequence protection function.
Emergency stop function.
Rain cover for outside hoist, driving units, electric cubicle.
Warning indicator: flashing lights and warning sounds.
Wireless infra-detector for anti-collusion.
Pillar Mounted Jib Crane Applications:
3 ton pillar jib crane for sale has advantages of high-efficiency, energy saving, flexibility, time-saving, etc.
Pillar base jib crane is one type of medium-sized lifting device and can be used freely in three dimensional space.
Widely used in workshop, dock, storage yard and other places.
Used for short-distance and intensive lifting and moving occasions, like fixed production and construction lines.
Also applied for production line and assembly line in factories and mines, and also used in warehouse, pier and other places to lift heavy goods.
Chinese cantilever gantry crane with lifting capacity of 5 ton to 200 ton for sale with good price. Compare cantilever gantry crane and gantry crane with no cantilever to get your ideal gantry crane now.
Cantilever gantry crane introduction
Cantilever gantry crane, as its name implies, has one or two cantilevers on the bridge in order to increase lifting capacity and protect the machine’s leg free from deformation, and cantilever gantry can also increase the travelling distance which greatly convenient to handle the goods.
Design considerations for the cantilever gantry crane include the need to compensate for deformations caused by changes in temperature and for skew of the span in relation to the supports during movement. The span may have one or, as in the case of cranes servicing ships, two cantilevers, one of them functioning as the hoist boom.
The cantilever gantry cranes are equipped with automatic holding devices in order to prevent creep caused by wind action when the crane is not in operation. Grab buckets, and sometimes lifting electromagnets, are used as the cargo-handling gear of the crane.
Cantilever Gantry Crane Parameters
Lifting Capacity of Cantilever Gantry Crane: 5~200t
Span Length of Cantilever Gantry Crane: 18~35m
Lifting Height of Cantilever Gantry Crane: 6~18m
Lifting speed of Cantilever Gantry Crane: 3.5~12.5m/min
Gantry Crane Travelling Speed: 28~45m/min
Gantry Crane Working Duty: A5
Cantilever Gantry Crane Technical Data
Applications of cantilever gantry crane
Cantilever gantry cranes are used to transfer bulk cargoes, such as coal and ores, and piece cargoes, such as high-grade rolled metal. They are used mainly in open storage areas, such as railroad freight yards, river ports, and seaports.
Features of Cantilever Gantry Crane
The cantilever can protect the gantry crane free from deformation.
Improve the gantry crane operator’s security and broaden the lifting range of the gantry crane.
It is the heavy-duty gantry crane that can handle various kinds of objects and materials.
Compact structure design of the cantilever gantry crane can save the construction cost.
Easy and controllable operation on loading and unloading positioning with high accuracy.
The cantilever gantry crane be equipped with types of lifting mechanism such as electric trolley and the electric hoist to meet different requirements.
Comparison of Cantilever Crane＆ gantry Crane with no Cantilever
1. The Cantilever gantry crane can expand the length of the gantry crane comparing with the gantries without cantilever.
2. Due to the cantilever design, the cantilever gantry cranes has higher protection lever to the crane legs and keep them from deformation when material handled through the border of the main beam and cantilevers.
3. High-efficiency with reasonable price.
4. Cantilever Gantry Crane must be used with saddle to ensure its stability.
5. When the crane span length is more than 30 meters, the flexible leg and rigid leg must be set to for the sake of gantry crane safety.
Cantilever gantry crane for sale good price. Chinese cantilever gantry crane with lifting capacity of 5 ton to 200 ton for sale with good price. After comparing cantilever gantry crane and gantry crane with no cantilever, do you have any idea which gantry crane to choose? Contact us for more information on the gantry crane now.
Crane repair should be conducted regularly and efficiently to guarantee no signs of wear that may endanger the crane operator or crane related workers. At overhead travelling crane working shop, it is always busy, crowded and short of time, the following checklist is given for your reference to make the detection of the most common signs more efficiently that your overhead crane and hoists needs repair.
Corrosion
Corrosion is one of the problems of overhead crane repair that can creep on you until it demands serious attention. Rust starts small, often goes ignored, and does not appear to affect the performance of the overhead crane and hoist equipment, especially in wetter regions or places with higher moisture.
Corrosion may result in bad consequences, such as electrical shorts, compromised lifting systems, loss of mechanical strength, and overhead cranes or hoist systems that are in danger of dropping their loads due to compromised integrity.
In order to prevent the happening of the above overhead crane accidents, it is vital to detect corrosion which tells you that overhead crane repair is needed or a crane parts need to be replaced.
Crushed chain links
Crushed chain links are another common problem when working with chain based hoist systems or similar parts or components. If heavy loads are lifting during the project hours, the chain links are easy to get crushed or broken.
To prevent crushed chain crane accidents, it is obliged to make frequent chain inspection and maintenance a regular practice in these situations. Don’t turn a blind eye on the crushed chains which is very different from a completely broken chain links and more difficult to be detected, especially from a distance.
Do repair your overhead crane and hoist when the crushed chain links detected.
Bent or cracked hooks
A crane hook is designed to hold load weight in a particular and precise direction. A crane hook is a comparatively delicate component, which can be bent by misapplied weight, compromising its internal integrity. The bent crane hook has high possibility of braking off in the future use. Crane hooks should be inspected regularly to make sure they have not been damaged slightly.
Pad wear
Pads are widely used on lifting cranes and hoists as stabilizer, outrigger and slider pads, which are used to take the brunt of the brunt of the force and make the lifting equipment travel smoother. Naturally, the pads wear out much quicker than other crane parts and components. Inspect the pads for shining and wear which means replacement is needed. Abnormal noisy in the lifting crane or hoist should be noticed for it may be caused by the wearing pads.
Rated load capacity is unknown
Rated load capacity is unknown to all which is not really a physical of needed repairs, but it is a clue that repair work may be needed in your future. Every component you use is rated for a specific load capacity and testing is required. If there are crane parts or components, likely used for handling heavy loads, the rated load capacity of which are unknown, they may put a dangerous stain on keys.
Dry ropes and slings
Heat, cold, and constant work play havoc with the more flexible parts of your lifting crane and hoist, particularly the ropes and slings. Ideally, a regular maintenance such as oiling should be conducted according to schedule to preserve them in the right conditions.
Without adequate maintenance, it will result be dry, brittle fiber that stretches and cracks well ahead of its time. If your crane rope or sling fibers are looking ancient and ragged, then repair and replacement may be needed.
Long-term abrasion
Since abrasion happens slowly, it may sneak up on work crews. However, the consequence will be dramatic when a component breaks.
Check your crane wire, joints, and all moving parts for the tell-tale, shiny surfaces that signify abrasion. Keep your eyes on those places.
5 overhead crane safety tips
Overhead crane safety is always the top concerns. However, overhead crane accidents still took lives and resulted in damages in the last year. In the following, the fiver overhead crane safety tips are presented for your reference.
Overhead crane safety tips to prevent crane accident
Keep the trolley and hoist maintained
Regular maintenance of hoists and trolley is key to safety. Crane load testing maintenance will keep you informed the lifting capacity of your trolley and hoist can handle, ensuring that your hoist, trolley and overhead crane stay in good condition.
For heavy machine like overhead crane, maintenance is not optional but obligated. Serious crane and hoist damages may be caused if any of the moving parts gives out, wears, out or breaks down.
For the sake of crane safety, hoist safety, and smooth operations, make sure the electric hoist, trolley, and overhead crane in good condition by regular maintenance.
Crane slings or attachments should be secured properly
Improper securing of crane slings is one of the leading causes of crane accidents. If the crane slings are not properly secured, the loads may slip out, tip until they are off balance, and eventually crash to the floor below.
If hook latch is used, please make sure the crane hook latch is closed completely before the travelling of the hoist and overhead crane. The attachments for the particular overhead crane must be properly sized and be sitting securely in the hook saddle before you move. Otherwise, the crane attachments could become disconnected, resulting in disastrous results.
Make sure the load is clear of obstructions.
Overhead lifting crane have to move the loads straight into the air before shifting it in any lateral direction to make sure the nothing is clinging to the underside of the load. Extra weights would be added to the lifting crane if the cables, boxes or other objects attaches. The loads should be hoisted high enough to be free from any obstructions otherwise serious damage may be resulted due to knocking with other objects. Make sure the load will be easily clear any obstructions before you move it laterally.
Be sure employees are fully aware of the risks
When operation the hoist lifting crane, any employee should not be in the dangerous area where the “Overhead Crane Danger” signs should be marked. Related employees should be alert to the working plan and route of the overhead crane. Workers should stay clear of the hoist, and never walk under any loads suspended in the air. And the personnel should never be lifted or transported by a hoist or a crane.
Operate the lifting crane carefully and seriously
The crane operator should take full responsible for managing the lifting crane. Extra careful with his or her actions is needed to the operation of the overhead crane and hoist. The crane operator should not be too quickly and be careful not to jerk the hoist and crane if heavy loads is lifted.
Quick reversals of direction can cause heavy loads to spill and swing, which are very risky. The controllers should always be focus on what they are doing, and any distraction may result in extreme dangerous.
Overhead crane is used to make heavy loads handling easy however it may endanger life. Regular and proper crane maintenance should be necessary to keep your overhead lifting crane and hoist in good condition.
1 ton cheap hoist crane with China traditional single girder crane design is hot for durable quality, wide application and cheap crane price. Check 1 ton single beam overhead crane now.
LD Traditioanl Cheap Single beam overhead crane for sale – Dongqi overhead crane supplier
1 ton single beam overhead crane specifications
LD Type Single Beam Overhead Crane 1 ton Specifications – Dongqi 1 ton hoist crane single girder
Span of hoist crane
S(m)
7.5
10.5
13.5
16.5
19.5
22.5
25.5
28.5
Lifting height of hoist crane
m
9
9
9
9
9
9
9
9
Lifting speed of hoist crane
m/min
8
8
8
8
8
8
8
8
Trolley speed
m/min
20
20
20
20
20
20
20
20
Crane speed
m/min
20
20
20
20
20
20
20
20
Lifting motor of hoist crane
kw
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
Trolley motor
kw
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
Total weight
t
1.67
1.96
2.19
2.63
3.02
3.49
4.39
5.76
Max Wheel Load
KN
8.9
9.8
10.5
11.7
12.7
13.9
16.2
19.6
Track of hoist crane
P24
P24
P24
P24
P24
P24
P24
P24
Main dimension
mm
7.5
10.5
13.5
16.5
19.5
22.5
25.5
28.5
Rail top to main top
H1
490
490
490
490
530
580
660
745
Rail top to hook centre
H2
910
910
910
955
970
970
990
1010
Wheel base
W
2000
2000
2000
2500
2500
3000
3500
4000
Crane width
B
2500
2500
2500
3000
3000
3500
4000
4500
Hook left limitation
S1
796
796
796
796
796
796
796
796
Hook right limitation
S2
1274
1274
1274
1274
1274
1274
1274
1274
Main girder height
H3
550
550
550
595
650
700
800
900
Note: Control mode for ground operation. Contact us to learn more 1 ton single beam overhead crane.
Overhead crane are the most commonly used material handling equipment used for lifting loads at various industrial sites. Therefore, overhead crane safety is the most important thing we should pay attention to.
Overhead crane safety
Select the right material handling equipment is the basic of overhead crane safety
The first thing to ensure overhead crane safety is the selection of material handling equipment, which must meet the designing and installation standards and requirements. The lifting equipment has to have sufficient rated capacity for the intended load, and the load should not exceed the lowest load rating markings. Each component or part should be marked clearly with the rated capacity. A thorough inspection including overhead crane load testing and the crane supporting structure should be conducted by a professional crane engineer or manufacturer.
Overload harms overhead crane safety
The second thing to ensure overhead crane safety is not overloaded and watch out materials falling. When an overhead crane is overloaded, it is subject to structural stresses that may cause irreversible damage. Swinging or sudden dropping of the load, using defective components, hoisting a load beyond capacity, dragging a load and side-loading a boom can all cause overloading.
Regular crane and hoist maintenance to ensure safety
One way to reduce the risk of falling materials is to perform regular maintenance to overhead crane and hoists. Load testing maintenance ensures that you know how many pounds the electric hoist and overhead crane can handle, and it helps to maintain the overhead crane in good working condition. Crane maintenance should always be treated seriously when it comes to heavy machinery. If a moving part on an overhead crane wears out or breaks the hoist or crane, it can cause serious damage. Performing regular maintenance ensures the hoist and overhead crane remain in good working order and that all operations run smoothly.
The third thing to ensure overhead crane safety is the proper crane operation. Here are some safety tips for cranes operators to follow while operating the overhead crane and moving the load. Overhead crane operation tips to ensure crane safety
Do not engage in any activity that will divert your attention.
Do not lift, lower, or transport a load with the crane or hoist until all personnel are clear of the load and the load’s path.
Verify that the load, crane and hoist will clear all obstacles before moving or rotating the load.
Do not move loads over personnel.
Do not lift, lower, or transport personnel by means of the crane, hoist, trolley, hoist hook, or load.
Slowly inch the hook into engagement with the load to eliminate wire rope slack and reduce impact loading of the crane and hoist.
Avoid unnecessary inching and quick reversals of direction.
Lift the load only a few inches to verify that the hoist braking system is functioning properly before continuing with the lift.
Avoid swinging of the load or hoist hook when the bridge trolley or hoist is traveling.
Avoid sharp contact between trolleys or between trolleys and stops.
Do not use the primary upper limit device as an operating limit. Use other operational limits if they are available.
Do not lower the load beyond the point where less than two wraps of wire rope remain at each anchorage on the drum, unless a lower limit device is provided, in which case no less than one wrap of wire rope shall remain at each anchorage on the drum.
Activate the manual warning device (if provided) before starting the bridge or trolley travel motion of the crane and intermittently during travel of the crane when approaching people in the travel path of the load.
Verbally warn people before starting the bridge or trolley travel motion of a floor-operated crane that does not have a warning device that may be positioned in the load’s travel path and during travel of the crane when approaching people in the load’s travel path.
Please contact us for more information on overhead crane safety.
Dongqi 2 ton free standing column mounted jib crane for sale to Singapore, is engineered to stand by themselves on a concrete foundation without building support. Free standing jib crane allows for 360° rotational capability, can maximize the utilization of any work area. Freestanding jib crane can be base plate mounted, foundation mounted, or column mounted. Standard lifting capacity is from 0.5 ton to 10 tons, customized jib cranes can reach 16 tons.
2 Ton Jib Crane for Sale to Singapore:
Type: Free standing column mounted jib crane
Lift capacity: 2 ton
Lift height: 3m
Slew angle: 360°
Electric hoist: chain hoist with electric trolley
Power supply: 380V/50HZ/3Phase
Control mode: Pendent control
Note: The above parameter is our Singapore customer’s order. Other size of jib crane can be customized according to your demands.
Free Standing Jib Crane Design:
360° rotation.
The head assembly is constructed of standard plate, angles, and channels to ensure minimum deflection and maximum rigidity.
Head assembly is designed to inhibit dislodgment due to upward and forward motion, also allows bottom entry electrification inside the head and will also allow mounting above the boom for top entry electrification.
Allows for electrified, motor driven, powered rotation through various collector ring assemblies.
The boom or I-beam is designed to meet all specifications utilizing a 25% factor of rated load for impact and 15% of rated load for hoist and trolley weight.
The pipe mast or column is designed to give maximum strength and minimum deflection to resist bending, buckling, and crushing as well as wear by the trunnion roller assembly.
The top bearing assembly utilizes a tapered roller bearing with a grease fitting for proper lubrication.
Why Choose Dongqi Jib Crane:
Jib crane arm reaches every corner of the workspace.
Easy slewing operation with pivot resistance regulator as standard feature, positioning accuracy.
Compact design, perfectly suitable for feeding of machines and machining centres or installation of machines.
Supports ergonomic operation while reducing strain on workers.
Large effective lifting height. Large operating range thanks to generous swivel angle.
Column height and jib arm length can be adjusted to conditions on the spot.
Broad range of fastening options provides for convenient installation.
High-quality coating. High quality wear resistant components.
Modern design with affordable price.
How to Get Your Right Jib Crane:
The following factors should be considered in order to choose a right jib crane for maximum effectiveness at minimum cost.
Lifting capacity: The maximum weight of the application should match design weight.
Area of rotation: Free standing and column mounted jib cranes offer 360° rotation. Wall mounted types offer 270° rotation.
Lifting height: Distance from goods to the hook center.
Working span: The total arm length and the running length of electric hoist.
Power supply: 3 Phase, AC 220–480V, 50/60HZ (as you required)
Application: What materials to be lifted.
Buy jib crane from Dongqi Crane
As a jib crane manufacturer and supplier, Donqi Crane offers types of jib crane designs, and offers turnkey jib crane projects from jib crane design, jib crane production, to jib crane installation and maintenance for over the world. Generally jib cranes can be grouped into fixed jib crane, including, floor mounted jib crane and wall mounted jib crane, wall travelling jib crane, and mobile jib crane, etc
Cantilever jib crane is lifting equipment to do light weight transport in plants, port, wharf and etc.
And also the cantilever jib crane can be used in manufacturing line and assembling line, installed in the fixed position to handle materials accurately. There are two types of cantilever cranes designs from Dongqi group. If you want to carry heavy loads under 20 tons, you can choose heavy duty cantilever jib crane. And you can choose cantilever jib crane if you need to transport loads under 5 tons. Both of them are quiet applicable for short distance and busy work.
Besides cantilever jib crane, Dongqi is able to provide types of jib cranes, overhead crane, gantry crane, and other lifting equipment. If you have any need, visit our Hoist and Crane Product Center.
Main Parameters of Cantilever jib crane
Cantilever Jib Crane Rated capacity: 0.25-5t
Cantilever Jib Crane Turning degree: 360°
Cantilever Jib Crane L: 4300-4500mm
Cantilever Jib Crane R: 1100-1700mm
Cantilever Jib Crane r: 4000mm
Cantilever Jib Crane H: 3800-4500mm
Custom cantilever jib crane is also available from Dongqi Hoist and Crane.
Specifications of cantilever jib crane
Features of cantilever jib cranes
Both of the two types of cantilever jib crane are fixed by anchor bolts on cement foundation.
Both of their jib arm can turn a maximum span for 360 degree.
Jib arm of cantilever jib crane can make into I-beam type.
Accept you own non-standard customization if necessary.
Why choose Dongqi as your jib crane supplier?
There are many reasons that we ensure that you will not regret to choose cantilever jig crane from Dongqi Hoist and Crane. We give you professional services no matter sale or after sale service. Then, we have good reputation in customer like you, we are trustable. Lastly, we give you best manufacturer with best price.
Why Dongqi hoist and crane is cost-effective?
The reasons of why Dongqi cantilever jib crane is cost-effective are as following:
Domestic demand promotes technology development on Chinese cantilever jib crane in China.
Huge market potential and the lowest production cost due to the huge population and abundant of raw materials and government incentive policies contributes to the price advantages of Dongqi cantilever jib crane.
Beneficial policy support makes Chinese cantilever jib crane more competitive.
Fierce competition makes the price of Chinese cantilever jib crane more inviting. Direct sale makes Chinese cantilever jib crane more cost-effective.
Cantilever jib crane for sale: 0.25-5 ton cantilever jib crane for sale . Chinese Cantilever jib crane for sale good quality and price to do light weight transport in plants, port, wharf, etc. Contact us for more information on the cantilever jib crane now.
Gantry crane is widely used for material handling. In order to prevent crane failure and crane accidents to ensure your crane safety, the common crane failure is analyzed and the crane maintenance methods are given below for your reference.
Gantry crane maintenance is the guarantee of the machine running and safe operation. The crane maintenance of the gantry crane should follow the following principles:
Crane maintenance is simple, high maneuverability;
To ensure that mechanical technology to be in good condition;
The crane maintenance cost is not high, to minimize the disassembling process;
Crane maintenance as soon as possible, lowering the transportation causes of adverse consequences;
Use the advanced gantry crane maintenance technology and management methods, minimize crane maintenance work intensity.
Gantry crane with double girder for heavy material handling
General gantry crane failures and basic crane maintenance methods
The general gantry crane failures and corresponding maintenance methods are presented for you to solve your crane failures and ensure your gantry crane safety.
Gantry crane main girder failure and maintenance methods
Common failures to gantry crane main girders are gantry crane girder subsidence and horizontal bending girder, specifically:
(1) Gantry crane main girder sink failure and crane maintenance methods
Main reason of gantry crane main girder subsidence are as following:
Gantry crane girder structure stress, lack of rigid, joint gap is too large;
Overload use;
Use more than fixed number of year;
Heating or heat radiation;
Chord or diagonal deformation;
Storage, transport, loading way is not correct.
Crane maintenance:
In view of gantry crane main girder subsidence, the main crane maintenance methods include: the flame and prestressing two methods to repair; Reinforcement localized.
(2) The level of gantry crane main girder bending.
The main causes of the level of gantry crane main girder bending are:
Make improper welding technology;
Improper storage and transportation.
Crane maintenance:
Level for the gantry crane main girder bending, the crane maintenance method is mainly by flame rectification and appropriately with puller, top.
Gantry crane girder
Gantry crane track failure and crane maintenance methods
Common failures for gantry crane rail ways
Track hold-down bolt looseness, defects, clamp open welding or deformation;
Loose track error, orbit, rail surface cracks and scars;
Rail surface wear serious,
Joint gap is too large, or dislocation.
Crane maintenance methods for gantry crane rail failures
Replacement or tighten the clamp bolt,
Add welding clamp;
Adjust the gauge and joint clearance to the specified value; Change the orbit.
Gantry crane rail
Gantry crane pulley failure and corresponding crane maintenance
Common faults for gantry crane pulley
Rope pulley groove excessive wear and tear, or uneven wear.
Pulley rim cleft, fall off easily jump rope;
Pulley installation is unqualified;
Pulley spindle, large amount of wear and tear of the wire rope wear.
Crane maintenance methods for gantry crane pulley
Change the pulley rope groove;
Of the wire rope jump by positioning, maintenance and repair
Adjust the pulley installation location;
Replace the new pulley.
Crane pulley for gantry crane
Problems of gantry crane wire rope and crane maintenance methods
Common fault for gantry crane steel wire rope
Steel wire surface oil quantity is not enough,
There were bent, broken, crushed, cable, twisted, the leakage phenomenon;
Wire rope diameter reduction than standard, the number of broken wires within a lay length of more than 7 root.
Crane maintenance for steel wire rope of gantry crane
Add lubricating oil in the surface of steel wire rope,
Stop using the knot, broken strands wire rope;
Replace the problem wire rope with the new wire rope.
Wire rope for gantry crane
Gantry crane drum problems and crane maintenance methods
Common fault for gantry crane reel
There are cracks on drum cylinder;
The drum shaft and key badly worn in shaft is cut off;
Drum rope groove wear, wire rope jump or rope chaos, wear is too big.
Crane maintenance methods for gantry crane reel failure mainly include:
Welding repair;
Stop using the problem shaft, maintain and repair the key parts
Replacement problem parts such as: the drum.
Gantry crane brake problems and maintenance methods
Common fault for gantry crane brake
Because of a shortage of electromagnetic coil burned, electromagnet suction, the brake band of electromagnetic brake adhesive on a dirt brake wheel, activity joints stuck, hydraulic push rod brake failure caused by factors such as brake cannot be opened;
Brake with rapid wear;
Not effective braking;
Brake release easily adjust the position.
Fault crane maintenance and repair methods mainly include:
Replacement battery coil;
In relation to the maintenance of the voltage is too low reason.
Clean with kerosene brake wheel and brake band, eliminate the sticking phenomenon, adjust the spring pressure;
Adjust the brake or replacement brake wheel;
Tighten the nut, overhaul nut or screw thread.
Crane brake for gantry crane
Gantry crane reducer problems and crane maintenance methods
Common fault for gantry crane reducer:
there is a periodic gear shaking phenomenon;
Have a sharp metal friction. The chiming of the gear mesh are uneven;
Overheating box, gear damage;
Casing leak.
For the crane maintenance and fault repair methods mainly include:
The gear for repair or replacement;
Adjust the driver installation clearance;
Replacement of bearings, replacement and supplement lubricant;
Electric overhead travelling crane overview helps get your suitable single girder eot crane and double girder eot crane. As one top eot crane supplier, Dongqi Crane offers types of eot cranes to meet various indusrial needs. Check eot crane overview now.
Eot crane
Eot cranes is the short form of electric overhead traveling crane, also called eot overhead crane, or overhead eot crane, having single girder or double girder. The main elements are used in these eot cranes such as the main beam, runways, electric drive, control device, eot crane trolley traveling tools and much more. There is an availability of good quality single girder eot crane in China. These eot cranes are used in many fields like steel making factory, petrochemical industry, construction business and many other places.Superior single and double girder eot crane design is crucial to achieving great outcomes in your project. There is a large number of single and double girder Eot crane manufacturers in China who provide a wide range of designs.
Single girder eot crane
Single girder eot crane solves your material handling problem at a single shot while double girder eot crane doubles your efficiency. Single girder eot crane or double girder eot crane? Read on to get your ideal eot crane.
Single girder eot crane video – Dongiqi Crane, your eot crane supplier
There is one single beam in single girder eot crane it appearance shows it is single girder eot crane. A single girder eot crane is used for light duty weight and short period work. It has 20 tons lifting capacity normally and can work maximum for 6 hours. Actually, it is most suitable for 1 to 20 ton lifting capacity. Single girder Eot crane is useful for short time operation and low duty load. Single girder eot cranes are available in both top running and under running.
Generally, the single girder eot crane is used for lifting smaller capacities of 1 to 20 tons, while, the double girder eot crane is used for heavy load lifting capacities of more than 10 tons. Actually, these are both are convenient equipment’s for load lifting as per their capacities and decreases your efforts. Currently, there are a large number of manufacturers and suppliers of single girder eot crane China and double girder eot crane China. As per research, more than 80% factories need these types of eot cranes for their work. There are various types of these both eot cranes; you can apply according to your work type.
Lifting capacity offering of Dongqi single girder eot crane
Single girder eot crane is lightweight eot crane, we also call it single girder overhead crane or single girder bridge crane. Single girder eot crane supporting the use of electric hoist, which is widely used in general construction and production plants, workshops, warehouses, power plants, etc. for materials handling and lifting.
Dongqi Crane single girder eot crane include: 5 ton eot crane, 10 ton eot crane, 16 ton eot crane, 20 ton eot crane, 32 ton eot crane, etc. All the single girder eot cranes have ISO, CE and other international certifications, etc. More informaiton, please check the eot crane lifting capacity.
Features of Single girder eot crane
Dongqi Single girder eot crane has the features of maximum rigidity for a minimum deadweight. This could keep the load on the eot crane runway to a minimum. The cost effective design would be your optimal choice for material handling. The Single girder eot crane has the electric hoist as the lifting mechanism with high handling speeds, providing you’re the outstanding geometry, and exceptional travelling characteristics. High stability and design rigidity, Highly cost-effective, High efficiency and good performance
Specifications of single girder eot crane
Lifting capacity- Single girder eot crane generally has the capacity for load lifting up to 20 tons. You should select the most suitable for eot crane capable of lifting your material carefully.
Span- The maximum span capacity of this eot crane is up to 120 feet.
Bridge travel speed- There should be perfect speed as per load which is lifting
Trolley travel speed- Generally, trolley travel speed is applicable up to 150 fpm.
Hoist speed- Hoist speed is acquired up to 41 ppm based on your application
Likewise, you should consider double girder Eot crane specifications if you have requirement of heavy load lifting.
Benefits of single girder eot crane
Effective cost for application of ideal sources
Long-lasting for low dead weight
Low pressure on constructional building
Accessible on ranges from 1 to 35 meters and 1 to 20 tons for lower handling.
Features of single girder eot crane
This makes less effort for lifting compared to double girder eot crane
Cost for maintain is lower in this type of eot crane
There are latest safety tools are included.
It is Convenient for light weight lifting.
It makes light duty load by boosts up heavy load and space saving.
Heavy duty is done with steel rope guide.
It is long lasting durable in service.
Double grooved rope installed at all height levels to easy load lifting.
There should be VVF drive for accuracy in load as a optional feature.
In this plate welded box girders placed for safety and less vibration.
Cost effectiveness solutions for optimum utilization of space
High stability for very low dead weight
Low load on the eot crane run way and building structure
Maximum hook approach
Outstanding travel characteristics ensuring safe and gentle handling
Capacity : 1 Ton to 20 Tons
Span : 5 to 35 mtrs
Special features of modular single girder eot cranes
Lightweight and compact construction minimizing building loads and space saving
Suitable for Light and Medium duty workshop applications
All motors are TEFC with class F insulation
Heavy duty cast steel rope guide
Upper and Lower hook travel limit switch
Additional Counter weight operated over hoist limit switch as option
VVVF drives are available as an option
Compact and lightweight festoon cable system
Pendent and Radio remote control operation
Double girder eot crane
These types of eot cranes are widely used where capacities over 10 tons and spans of 60 to 100 feet are required.Double girder eot crane doubles your material handling efficiency. Dongqi double girder eot crane for sale good quality and price. Check the Chinese double girder eot crane now.Double girder eot crane is designed to handle heavy loads and objects over 20 tons, thus, a double girder eot crane also refers to a heavy duty eot crane. Hook double girder eot crane is one of the mostly used heavy material handling equipment with the lifting capacity from 5 ton to 550 ton, working class up from A4 to A7.
Capacity- Double girder eot crane should have a maximum load lifting capacity up to 50 tons as these eot cranes are applied specially for heavy load lifting.
Span- Maximum capacity of double girder eot crane is up to 114 feet
Speed- Bridge travel, trolley travel, and hoist speed should be considered for the right selection.
Bridge travel speed- Double girder eot crane should have up to 160fpm bridge travel speed.
Trolley travel speed- 82 fpm is the ideal trolley travel speed as per the need of your application
Hoist speed- There should be hoist speed up to 41 fpm.
You should determine above specifications to choose the right eot crane in your project to make your work easy.
Lifting capacity offering of Dongqi double girder eot crane
According to different lifting tools, the double girder eot crane can be grouped into hook eot crane, gab bucket eot crane, electromagnetic eot crane, soaking pit eot crane, etc. According to application environment, the double girder eot crane can be grouped in explosion proof eot crane to reduce explosion risk, foundry eot crane and the insulation eot crane to increase handling safety, etc.
Features of double girder eot crane
Limit switches- To save over hoisting and very bottoms of hook
Smoothly starts- Electronic soft start module facilitates to the long drives to acquire jerk free, cocooned and trouble-free starts
Eot crane cabin handled- A eot crane managed by an operator in a cabin connected to the bridge or trolley
Buffers- There is flexible buffers in different shapes and sizes with a plate or spotted fixing varieties. They are obtainable in natural, neoprene, and further rubber materials.
Push button stations- lightweight, simple to operate, easily accessible, aluminum designed from extruded section.
Quality features of double girder eot crane
Device- Small-scale designed, light weight, easy to handle as well as maintain, flexible design with direct fits between parts
Motors- These eot cranes use, robust barrel shaped rotor pole changing motors with classic consistent cast aluminum sections and affiliate safety brakes insulation class F, IP54 safety
Gears- Accurate flat spiral prompt gears in low compound housings, and perpetual oil/grease moisture.
Brakes- Single and double disc radiation DC brakes having automatic braking in a power cut.
Dongqi Hoist and Cane- Your top eot crane manufacturer
The eot crane industry has observed a great growth rate regarding technological developments. So, it is essential for each manufacturer to use latest technology while making eot cranes. That is why; all manufacturers are alerted that they are being up to date with all necessary accessories. An ideal Eot crane should be strong, effective, long-lasting, provide high execution and easy to maintain. The eot cranes are used in multiple sources such as mining, shipping, construction and many more. So, one should be careful about standard raw material. The flexibility of an eot crane is also considered a vital element since it helps to use eot crane in an efficient way.
Overhead cranes, new or old installed, must be tested and certificated qualified, and get the acceptance inspection, before being put into work. Crane inspection and crane testing are necessary and important for crane commissioning and crane acceptance, which is indispensable procedure to check the overhead crane manufacturing and installation quality, and guarantee crane safety during operation.
Overhead cranes and commissioning
Overhead crane commissiong
Besides crane commissioning and acceptance inspection, the regular overhead crane inspection and loading test are required each and every year. However, in the following, the crane test and crane inspection for overhead crane commission and acceptance will be put in length.
Crane Test Preparation before Commissioning
Clean up overhead crane test site and make sure the irrelevant personnel can’t come in.
Prepare a testing object being 1.25times of rated capacity of the overhead crane. It is better to weigh it in advance.
Lifting steel wire rope or belt.
Tools to examine bending, such as steel line(Jean line), plumb and measuring tool.
Testing staff should include equipment manager, engineer, technician and operator.
Test personnel should know commissioning aims, requirements and methods, and the necessary division of labor, select experienced operator to trial operation.
Overhead Crane Commissioning
After inspection and preparation, the overhead crane operation test can proceed. The running test of overhead crane can be divided into the following three steps: no－load test, static load test, and movement test.
Overhead crane no-load tests
Overhead crane no-load test are mainly divided into the three parts, the crane trolley travelling test, overhead crane travel test, and no-load hook test.
Trolley/ hoist travel test
Start the trolley/hoist of overhead crane, and
Make the trolley /hoist run back and forth along the rail more than 3 times
Test limit switch to make sure is sensitive and reliable.
The driven wheels must touch rail all the time, the space between positive wheel and rail should be not more than 1mm.
Crane travel test
Make the overhead crane run back and forth along the rail more than 3 times. Each time running distance is 3m at least.
Wheels of the overhead crane must not stuck rail.
No-load hook test
Lift the empty hook up and down more than 3times.
Examine brake and lifting limiter.
All traveling and lifting mechanism must work stable, no vibration and shock
Overhead crane static load tests
Before Static load testing, the no-load test must be qualified.
Set crane on one end of rail. Trolley/hoist lifts the rated capacity and travel along the crane girder back and forth.
Unload the loads and set the trolley to one end of the crane girder.
Hanging a plumb in middle of crane girder to examine the original bending degree. Operating trolley/hoist come to middle of girder, lifting loads 1.25times of rated capacity, up to 100mm, and keep this condition 10min on both sides of girder.
Then examine the bending degree again.
Then unload the capacity, to check if girder has any permanent change. This testing should do 3times.
Then examine the final bending degree which should be bigger than 0.8L/1000.
Place trolley/hoist stop in middle, lifting rated capacity to test girder’s resilience downwarping, which should not be more than L/700. For single girder overhead crane, the resilience downwarping should be not more than L/600.
Movement load tests
Lift loads of 0.5 time, 0.7 time, 1 time and 1.1 times of rated capacity of the overhead crane.
Make trolley/hoist travel several times.
If no problem is observed, start crane traveling mechanism and run the overhead crane several times.
Lifting mechanism must be operated 10-15min, traveling mechanism must work 20min or 10times.
Ensure the brake is workable, reducer has no noise, no vibration, and temperature is normal, no oil leaking;
Make sure the lubricating system is fine.
Make sure all limiters and safety device are reliable.
And electrical box is fine, temperature is normal, no noise, no vibration, cable/line connecting is not burnt.
Cranes & Hoists Supplier - Dongqi crane hoist 