Falling-protection device

Abstract

The invention discloses a falling-protection device. The falling-protection device comprises a shell formed by the connection of a mounting plate, a ratchet housing and an end cover, wherein ratchet teeth are arranged on the inner wall of the ratchet housing, a brake shaft is arranged inside the shell, one end of the brake shaft is provided with a loading shaft, one end of the loading shaft passes outside the shell, a slot is arranged on one side of the brake shaft along the radial direction, a pawl is arranged inside the slot, an inner end of the pawl is connected with the brake shaft by an elastic component, the outer end of the pawl is hinged with the brake shaft by an eccentric shaft, a high-speed rotation of the brake shaft can drive the inner end of the pawl to swing outwards, and the brake shaft and the ratchet teeth are matched so that the loading shaft and the ratchet housing are locked. The falling-protection device is simple in structure, small in volume, light in weight, stable in running and low in failure rate. When the falling-protection device normally runs at a lifting platform, execution components do not collide, so that the losses of the components are extremely low after the components are used for a long time, not only the running load of the lifting platform is not increased, but also an effective protection action can be applied once a falling accident happens.

Description

technical field [0001] The invention relates to a fall prevention device. Background technique [0002] The lifting platform of the tank girth welding machine needs to be equipped with an anti-fall mechanism to prevent the power motor from losing its self-locking function or the installation shaft suddenly broken. However, the existing anti-fall mechanism has a complex structure and a large volume. Therefore, the working stability is poor, it is easy to be damaged, and it is difficult to play a proper protective role. Moreover, during the normal working process of the lifting platform, the executive parts of the existing anti-fall mechanism always collide with each other. On the one hand, it will increase the operating load of the equipment and waste energy. The executive parts of the falling mechanism will be quickly worn out due to collisions. When the lifting platform is in danger of falling, the anti-falling mechanism is very easy to fail due to normal wear and tear, an...

AI Technical Summary

Problems solved by technology

However, the existing anti-fall mechanism has a complex structure and a large volume. Therefore, the working stability is poor, it is easily damaged, and it is difficult to play a proper protective role.

Moreover, during the normal working process of the lifting platform, the executive parts of the existing anti-fall mechanism always collide with each other. On the one hand, it will increase the operating load of the equipment and waste energy. The executive parts of the falling mechanism will be quickly worn out due to collisions. When the lifting platform is in danger of falling, the anti-falling mechanism is very easy to fail due to normal wear and tear, and cannot play the role of falling protection, which directly affects the life and property safety of users.

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