Overhead Travelling Crane Frequently Asked Questions

Answer: An electric hoisting mechanism, a traveling mechanism (both trolley and overhead travelling crane), and a rotation mechanism make up an electric hoist overhead travelling crane. The hoisting mechanism, which is a sort of electric hoist, is the first. It consists of an electric motor as the driving device, a brake as the braking device, a reducer as the transmission device, and a pulley as the fetching spinning device (hook, grab, magnetic disc, and wire rope, chain, trolley, drum, sprocket and rope-guiding device).

The trolley travel mechanism is the second type of horizontal travel mechanism. A traveling trolley is made up of an electric motor, braking device (brake), transmission device (reducer), and trolley wheel device. The vertical travel mechanism, which is utilized by overhead travelling cranes, is the third type of travel mechanism. This mechanism includes the driving mechanism (electric motor), braking device (brake), transmission device (reducer), and overhead travelling crane wheel device. Overhead travelling cranes with electric hoists offer the advantage of having a three-in-one driving device. It combines the components for driving (electric motor), braking (brake), and transmission (reducer).

The flexible cable is the first option. An AC power source provides power to the hoisting overhead travelling crane. Because the overhead travelling crane's job is movable, the overhead travelling crane and the power cannot be connected in a fixed manner. Typically, the flexible cable is utilized to supply power. As the overhead travelling crane system and trolley move down the track, the flexible cable can stretch and roll. A sliding wire and an electric brush are used in the second procedure. Three phase AC power is fed to the cabin's protection box through three main slide wires and an electric brush, and then to the overhead travelling crane system's motor, electromagnet, and AC control station via wire route.

Because the electric brush climbs into the conductor, the brush quickly wears out, the conductor junction is not smooth, only one connector is used, and the rail joint loosens, this is the case. Replace the electric brush, adjust the connecting joint, and use a double-brush connector if the brush is significantly worn.

The temperature is too high, and the distance between lifting racks is either too long or too loose. Anti-heat plate is partially adopted, sun screen is added outside, the number of trolley line lifting racks is increased, the conductor is corrected, and the screws are tightened.

The fork can't absorb the transmission error, the guiding-rail isn't straight, and the lifting rack is sloppy, thus this happens. Modifying the tractor, adjusting the guiding-rail straightness, and tightening the screw mounts is the proper approach.

Overhead travelling crane operating speed is determined by lifting speed, trolley travel speed, and overhead traveling crane travel speed. The speed with which you work is influenced by a number of factors.

It has to do with weight, for starters. Small and medium-lifting overhead travelling cranes can travel at a high speed to maximize efficiency, whereas heavy-lifting overhead travelling cranes should travel at a low speed to save energy and improve trip stability and safety.

The working class and the demands of the job have an impact on working speed. Working mechanisms with low class and adjusting purposes can operate at a slower speed, but overhead travelling cranes with high class, frequent use, and high efficiency can operate at a faster speed. For overhead travelling cranes that are only used for equipment installation and maintenance, low-speed solutions are available.

Depending on the situation, it can also be set to double speed (high and low), dead speed, or adjustable speed. Working speed is also influenced by the working environment. Because of its lengthy travel distance and high lifting height, the overhead travelling crane is ideal for fast speeds. With a limited travel distance, a high speed cannot be accomplished with an overhead moving crane. The overhead traveling crane, which does a lot of transportation labor, has a tendency to operate at a fast pace as industry progresses.

The overhead travelling crane for installation and maintenance has an adjustable speed. A fast-down device should be installed on some overhead travelling cranes with special functions, such as the overhead travelling crane for quench; for overhead travelling cranes with high lifting heights, the lifting speed should be improved, with low speed for heavy material, high speed for no-load, or high down-speed to increase efficiency

The leverage hinge is jammed, the braking-wheel and friction plate are oil-stained, the electromagnetic core lacks sufficient travel distance, the braking-wheel and friction wheel are severely worn, the main spring is loose and broken, and the locking-nut and tie rod are loose. After lubrication and excluding stuck problems, adjust the brake, replace the friction plate, replace the main spring and locking-nut, tighten the locking-nut, and inspect the impeller driving mechanism.

Answer: The braking-shoe is loose and does not fully separate from the braking-wheel, resulting in friction. The spacing between two braking-shoes and braking-wheels is either uneven or insufficient. The helper spring on the short-distance brake wears out or bends, and the braking-wheel surface is exceedingly rough. Adjust the distance, replace or maintain the assistant spring, and clean the braking-wheel surface. The machine cover rattles owing to uneven tapping when the reducer and gears mesh. Simply change the gears.

The most often used buffers are spring buffers, rubber buffers, and hydraulic buffers. The spring buffer is dependable and simple to keep in good working order. The rubber buffer has a simple design. The hydraulic buffer is capable of absorbing a large amount of energy without bouncing back. When the limiting stopper of traveling extreme position or brake is in trouble, the overhead travelling crane system going in the end or the trolley on the main girder will hit the stopper placed in the position due to inertia. An overhead travelling crane buffer, on the other hand, can absorb the travel energy of the overhead travelling crane system or trolley and reduce impulsion. Between overhead travelling cranes on the same rail or twin trolleys on the same girder, buffers should be built.

Answer: Lasers, ultrasonics, infrareds, and electromagnetics all work on the assumption that light or radio waves travel, reflect, and may be used to determine distance. The overhead travelling crane mechanism sounds an alarm and issues a stop instruction all at once when two overhead travelling cranes reach a pointed position.

There's a wire rope, a cam, a chain wheel, a skew indicator, and other automatic adjustment mechanisms. When the bridge frame deflects to a particular degree, the operator will be notified and the bridge will automatically adjust. The power is automatically cut, the traveling mechanism is stopped, and the crane's safety is safeguarded when the overhead travelling crane frame deflects sufficiently.

A safe hook is a necessary part of a bridge overhead traveling crane. What are the different sorts of safe hooks and what do they do?

The safety hook is most typically used on single-girder overhead travelling cranes. Material tilts against the trolley when lifted from one side of the main girder; anti-tilting torque from a vertical gauge wheel or a horizontal gauge wheel can keep the trolley balanced. This strategy, however, cannot guarantee safety in the event of a cyclone, an outside collision, a damaged wheel, or maintenance and repair. As a result, this overhead traveling crane should be equipped with a safe hook. Depending on whether they're attached to a trolley or a wheel, safe hooks have different constructions.

The overhead travelling crane's safe hook must be inspected. While the trolley travels along the main girder, there is no contact between the safe hook and rail or the main girder web. On the internet, there is no drowsiness. The safe hook's distance from the rail should be within the limitations. The bolt is tight and in the right place; the weld is secure; and the safe hook is undamaged, such as anomalous deformation. The simplest method is to perform a function check, which includes a visual inspection and a test operation.

Lubrication is required for large overhead traveling cranes. Lubricating your overhead traveling crane is important for a variety of reasons. It can reduce wear, friction, and temperature in overhead traveling cranes, as well as prevent corrosion and establish a seal. These functions are intertwined and have an impact on one another. If friction cannot be controlled, wear cannot be reduced, resulting in excessive friction heat and high temperatures, which damage the lubrication and lubricating substance on the friction surface. How should you lubricate your overhead traveling crane?

 Lubricate shafts, holes, and friction surfaces with relative movement on a regular basis. Depending on the working conditions, the lubrication points change. Every lubricant must meet the standards and needs of the instructions for different types of overhead traveling cranes and lubricating parts. Overhead traveling cranes should be lubricated and inspected on a regular basis. Lubricating the overhead traveling crane with approved oil may keep it in good operating order and avoid premature wear. Bad oil can cause a mechanical failure, damage equipment, and compromise production safety. Lubrication is critical in the maintenance of overhead traveling cranes.

• Answer:An overhead travelling crane, often known as an overhead crane, is used to boost warehouse productivity and production. How do you select the most appropriate overhead traveling crane for your project? Here are some things to think about while selecting an overhead traveling crane:
• Has the manufacturer or provider of overhead traveling cranes been in business for a long time?
• Have they ever supplied overhead traveling cranes to competitors before?
• Can they provide different types of overhead traveling cranes?
• .How do they make overhead traveling cranes, and what is their quality assurance procedure?
• Does their overhead traveling crane have an ISO certificate? See our overhead traveling crane qualifications.
• Include specifications for your overhead travelling crane, such as lifting capacity, size, and span.
• Will you be using your overhead traveling crane once a week, once or twice a day, or on a daily basis?
• What will the movement of the overhead travelling crane be like? (Do you prefer ascending or descending, turning left or right, or moving ahead or backward?)

Answer: In order to compete in the international overhead traveling crane industry, our company goes above and beyond in terms of offering high-quality overhead traveling cranes and overhead travelling crane services. Through its efforts in the following areas, our is dedicated to winning the smiles of you, our valued customers all over the world:

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Our technical team will design an overhead traveling crane that best suits your needs, taking into account your building and working environment as well as your lifting requirements.

2. You can choose from a variety of overhead traveling cranes with varied tonnages to fulfill your lifting needs.