Electric-hoist walking mechanism of bridge crane

Abstract

The invention discloses an electric hoist traveling mechanism of a bridge crane, which includes an I-beam, the I-beam includes a first track and a second track, and the top surfaces of the first track and the second track are respectively connected with a first traveling wheel and a second track. Two road wheels, the first road wheel and the second road wheel are all connected with a U-shaped frame through the wheel shaft, the wheel shafts of the left and right wheels of the second road wheel are fixedly connected through the connecting rod, and the wheel shaft outside of the first road wheel and the second road wheel The first driven wheel and the second running wheel are respectively fixedly installed, the top of the U-shaped frame is fixedly installed with a protective cover, the bottom of the U-shaped frame is fixedly installed with an electric hoist, the right side of the U-shaped frame is connected to the motor through the motor shaft, and the left side of the motor shaft The driving wheel is fixedly installed, and the bottom of the side of the left and right wheels of the first driven wheel is meshed with a transmission wheel. The left and right wheels of the transmission wheel are fixedly connected by connecting rods, and the first and second traveling wheels located on the upper and lower tracks of the electric hoist travel simultaneously. , which protects the inner rail of the I-beam and increases the safety after a failure occurs.

Description

technical field [0001] The invention relates to the technical field of traveling mechanisms of bridge cranes, in particular to an electric hoist traveling mechanism of bridge cranes. Background technique [0002] The electric hoist of the bridge crane uses the electric hoist as the lifting structure. Because of its simple structure, convenient operation and low cost, the electric hoist is widely used in machinery, chemical industry, light industry, railway and other industries. Due to the particularity of the bridge crane, the driver often takes on several jobs, and there are virtual unsafe hidden dangers in the operation. The electric hoist is an important device of the bridge crane, so the traveling device of the electric hoist is also particularly important. [0003] The existing electric hoist shape device has the following deficiencies: [0004] (1) Most of the existing electric hoist walking devices use walking wheels to walk on the inner track of the I-beam, so that...

AI Technical Summary

Problems solved by technology

[0004] (1) Most of the existing electric hoist walking devices use walking wheels to walk on the inner track of the I-beam, so that only the track of the I-beam bears all the weight of the electric hoist and the workpiece suspended by the electric hoist. The material requirements of the I-beam are high, the hanging weight is limited, and the electric hoist may cause damage to the inner track of the I-beam after suspending heavy objects for a long time, which will cause the track to bend downward, causing the electric hoist to run slowly or not. smooth;

[0005] (2) During the operation of the existing electric hoist, due to the heavy weight of the pendant, the wheel rim and the wheel tread are worn after a long time, and the gap between the wheel and the track gradually increases. If it cannot be checked and adjusted in time In the running interval, the electric hoist is not running smoothly, and the electric hoist may fall off the track, causing serious injury accidents, and the walking wheels of the electric hoist are distributed on both sides of the I-steel track, so generally not only the left and right sides need to be driven by motors, but also It also requires synchronous rotation at the same time, which increases the cost and increases the complexity of the walking device;

[0006] (3) The walking wheels on the existing electric hoist generally have no shelter, and are prone to be polluted by dust above for a long time, and the track is not clean, which increases unsafe factors. Due to the particularity of the assembly position of the wheel shaft, cracks on the wheel shaft are not easy to be found. When the cracks are not effectively controlled, the wheel shaft may break and cause a fall accident. Excessive wear of the walking wheels will also cause the electric hoist to fall from the track, seriously threat to worker safety

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