2 Ton Overhead Hoist

2 ton overhead hoist crane

Single beam crane is a commonly used lifting equipment and is widely used in various fields of industrial production.

The basic mechanism of a 2 Ton Overhead Hoist is the four recognized basic mechanisms:

1. Lifting mechanism

2. Operating mechanism

3. Rotating mechanism (slewing mechanism)

4. In addition to the luffing mechanism, there are also tower climbing mechanisms for tower cranes and special outrigger telescopic mechanisms for cranes such as automobiles and tires.

(1) Lifting mechanism: a mechanism that lifts and lowers the load in the vertical direction. It is also the basic mechanism of the Pei type crane. It consists of lifting tackle, furniture, fetching equipment (hooks, rings), drums, winches, etc.

(2) Luffing mechanism: a special mechanism that changes the horizontal distance from the center line of the hook to the center line of the turret. It is composed of a luffing train unit (or lifting trolley) and a luffing winch. Its main function is to change the amplitude R to increase the effective lifting capacity Q when the overturning moment M = QlR does not exceed the rated area, or to adjust the working position of the hook by changing the amplitude to meet the needs of the operation.

(3) Rotating mechanism: A mechanism that makes the hoisted load move horizontally along an arc around the vertical axis of the crane. Mainly used to change the working position during operation.

(4) Running mechanism: A mechanism that drives the wheels that support the crane to roll on the track. It consists of a motor, a reducer and a ring gear fixed on the wheel. Its function is to drive the crane to move along the laid track.

Lifting mechanism

1.Driving device

The driving device of the hoisting mechanism consists of a motor, brake, reducer, drum and transmission shaft. It is installed on a small frame and is the power source for lifting items. 2 Ton Overhead Hoists with convenient power supply adopt separate drive mode, that is, each mechanism is driven by its own electric motor.

2. Transmission device

The transmission device of the lifting mechanism is also arranged on the small frame. The transmission device includes a transmission shaft, coupling, reducer, etc.

The reducer is usually a closed standard two-stage cylindrical gear reducer. When the lifting weight is large (more than 80t), a pair of open gears are often added for the rear stage transmission on the basis of the two-stage reducer transmission.

3. Winding system

The lifting wire rope is wound out from the drum, and connected through the pulley group to the fetching device (hook, grab bucket, etc.), which constitutes the crane's winding system. The winding system directly affects the safety of hoisting operations, and accidents causing personal injuries account for 30% to 40% of all lifting injury accidents every year.

4. Object retrieval device

The retrieval device on the 2 Ton Overhead Hoist is also called a spreader. Retrieval devices include hooks, grab buckets, electromagnetic suckers, etc. Among them, the most widely used one is the hook.

There are many parts on a single-girder bridge crane, and the activities of each mechanism of the crane are completed by these parts. Once a certain component fails, it will affect the corresponding structure's normal operation, thereby affecting the safe use of the crane. Therefore, we must pay attention to the failure of parts and take corresponding protective measures.

Part failure usually manifests itself as wear, deformation, fracture or corrosion of parts. The wear of parts is mainly caused by the friction of Henan lifting machinery. Other types include abrasive wear, fatigue wear, adhesive wear, Fuji wear and other types. Wear can be reduced through lubrication, and the roughness of the friction surface of parts and the fit gap between parts are also related factors that cause wear.

Deformation of crane parts is generally caused by working stress or natural stress, and there are many factors that cause fracture, which can also easily cause serious consequences. Corrosion of parts is mainly caused by the attack of corrosive media on parts, which may also lead to serious consequences. Regarding the maintenance details of key components of the crane: In order for the crane to achieve maximum operating efficiency, it mainly depends on whether the maintenance is in place. If construction workers do not do a good job in maintenance, not only will the failure rate increase, but it will also pose a serious threat to life and property. Here we focus on understanding the maintenance details of key components of the 2 Ton Overhead Hoist.

1. Bearing maintenance: It is necessary to regularly check the condition of the bearing, the sealing effect, whether impurities have entered, whether the lubricating oil is sufficient, etc. If there are many foreign objects, impurities, etc. in the bearing, when changing the oil, we first use kerosene to clean the bearing, and then add appropriate lubricating oil.

2. Maintenance of the reducer: It is necessary to regularly check the operating condition of the internal gears of the crane reducer, the degree of gear wear, the meshing condition, etc. It should be ensured that the reducer

3. Maintenance of the drum set, pulley set, wire rope, etc.: These key components need to be comprehensively inspected to see if there are quality defects on the surface, whether there are job jumps, damage to the wheel grooves, etc. Pay special attention to the cleaning and maintenance of the drum set and pulley set. Lubricate well.

4. The brakes of the relevant mechanisms, especially the crane brakes of the hoisting mechanism, must be checked before construction, such as whether the shaft bolts are tight, whether the brake pad clearance is reasonable, and whether there will be malfunctions and other faults.

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