A crane braking device

Abstract

The invention provides a crane braking device. The crane braking device comprises a trigger device fixed to a wheel disc of a crane vehicle wheel, a braking wheel coaxially and freely arranged with the vehicle wheel, and a damping mechanism relatively fixed to the vehicle wheel, wherein the trigger device is capable of driving the braking wheel to coaxially rotate with the vehicle wheel, and the braking wheel is capable of driving the damping mechanism to provide damping action which forms positive correlation with the rotating number of the vehicle wheel for the vehicle wheel during rotating.The crane braking device has the following advantages: a damping sheet is capable of providing resistance for the vehicle wheel and a rail, and the resistance is increased along with the increasing of the rotating number of the vehicle wheel; in the case of a high rotational speed of a crane, braking can be rapidly realized, and the braking distance is shortened, and when the crane is static, sudden wind can be prevented from changing the position of the vehicle wheel; and the crane braking device has a good popularization prospect.

Description

technical field [0001] The invention relates to the technical field of crane braking, in particular to a crane braking device. Background technique [0002] Cranes are important equipment in industrial production. They have the characteristics of large volume, heavy weight and high operating speed. At present, the braking technology of cranes mainly includes the following situations: [0003] 1) Iron shoe braking: The use of iron shoes is relatively simple. When braking is required, the iron shoe goes down to the bottom of the wheel, and the wheel climbs to the upper part of the iron shoe and leaves the track, then pushes the iron shoe to slide on the track, thereby changing the rolling friction. Braking for sliding friction; [0004] 2) Wheel stopper: Add a wheel stopper to the driven wheel of the crane to change rolling friction into sliding friction and increase running friction resistance, but this method is slow and must be used with a hydraulic station, and there is a...

AI Technical Summary

Problems solved by technology

[0004] 2) Wheel stopper: Add a wheel stopper to the driven wheel of the crane to change rolling friction into sliding friction and increase running friction resistance, but this method is slow and must be used with a hydraulic station, and there is a cost higher questions;

[0005] 3) Rail clamp: The rail clamp can directly connect the crane to the track, and generate sliding resistance and play a certain anti-overturning effect, but its contact surface with the track is too small, affected by the dislocation of the track joint, the effect is not ideal , and the structure is more complex;

Especially after the implementation of emergency wind protection, improper adjustment will cause the wheel to go wedged or be ejected continuously, which cannot effectively play the role of wind protection;

[0007] 5) Wheel brakes and time-delay braking devices: Usually, the safety performance of the crane in the working state is guaranteed by brakes. The brakes are generally installed on the high-speed shaft of the motor, which has two functions of braking and preventing sudden gusts. However, in actual use, in order to prevent excessive braking and excessive impact, the braking torque is often adjusted very small, which makes the crane lose its due wind and anti-skid performance, and greatly reduces the overall wind resistance of the crane. ability;

[0008] The above methods basically use the idea of ​​rolling instead of sliding to perform braking. Whether it is to prevent the wheel from rotating by holding the wheel or by lifting the wheel to prevent the wheel from continuing to roll with the track, a long braking distance is required. Therefore, in its effective working range In addition, it is necessary to set up a long track for wheel braking, which increases the construction cost; and the position of the wheel may change when encountering a gust of wind, which poses a certain safety hazard

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