Anti-falling device triggered by switching signal

Abstract

The anti-falling device triggered by the switch signal comprises a chain wheel shaft and a follow-up chain wheel, and the follow-up chain wheel is fastened and installed through the chain wheel shaft and can rotate freely. Comprising a stop unit composed of a stop mechanism and a displacement driving mechanism. The device further comprises a follow-up chain and a traction falling block. The stop mechanism comprises a movable part capable of axially moving on the chain wheel shaft in a reciprocating mode, a first stop element and a second stop element, wherein the first stop element and the second stop element can be meshed with each other or separated from each other. The displacement driving mechanism comprises a reset element and an electromagnetic driving linear displacement element; when the car carrying plate normally ascends and descends, the first stop element and the second stop element are in a disengaged state through the reset element, and the follow-up chain wheel and the follow-up chain follow up; when a car carrying plate is in a static state or a chain cable is broken in the lifting operation process, a parking equipment control system sends out a signal to trigger an electromagnetic drive linear displacement element to work, a first stop element and a second stop element are meshed or combined, and a follow-up chain wheel and a follow-up chain cannot move; and the vehicle carrying plate cannot fall down.

Description

technical field [0001] The invention relates to a fall prevention device triggered by a switch signal, which can be applied in various occasions. In particular, when it is applied in the field of parking equipment, it can replace the static anti-fall device of the prior art, obtain a dynamic anti-fall effect in the whole process of ascent and descent, and realize the protection of equipment, vehicles and operations in a simple, reliable and low-cost manner. for the purpose of safety. Background technique [0002] Most of the car boards in the field of parking equipment involve the four-point traction lifting operation of steel cables or chains (referred to as chain cables). According to the relevant national and industry standards, the parking equipment that adopts the chain cable traction method to realize the lifting operation of the vehicle plate must be equipped with a fall prevention device and a chain cable breakage detection device; the chain cable breakage detection...

AI Technical Summary

Problems solved by technology

According to the relevant national and industry standards, the parking equipment that adopts the chain cable traction method to realize the lifting operation of the vehicle plate must be equipped with a fall prevention device and a chain cable breakage detection device; the chain cable breakage detection device of the current technology usually uses a position detection element. The fracture detection device detects abnormal displacement of the chain cable (including chain cable loosening or breakage), and sends a jump signal to the equipment control system, triggering the emergency stop of the parking equipment; the current technology of the anti-fall device is issued by the fracture detection device The jump signal triggers the start of the anti-fall function; however, the anti-fall device is usually installed at the height of the layer where the vehicle-loading plate is located, and can only ensure the anti-fall effect when the vehicle-loading plate is in a static state on the layer (commonly known as "static anti-fall "), it cannot prevent falling when the vehicle-loading plate is in the lifting operation (commonly known as "dynamic fall prevention")

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