Automatic-detection and falling-protection safety device

Abstract

An automatic-detection and falling-protection safety device comprises a pressure plate, wherein the pressure plate is hinged to a support; an electromagnet is arranged at one end of the pressure plate and is connected with an electrical control system; a hole is formed in the other end of the pressure plate; an upright column guide track is arranged in the hole and can vertically slide in the hole; a magnetic railing ruler is arranged on the upright column guide track and is provided with a measuring head; the lower portion of the pressure plate is positioned on the outer side of the upright column guide track and is provided with a slide way through a stand; a wedge-shaped sliding block is arranged between the slide way and the upright column guide track; and a spring is arranged between the lower end of the wedge-shaped sliding block and the stand. The automatic-detection and falling-protection safety device is reasonable in structure set, impact on a machine body can be effectively reduced, and permanent deformation on the structure can be avoided; and moreover, the automatic-detection and falling-protection safety device is high in practicability, is applicable to a steel wire rope type lifting platform, a chain type lifting platform, a lead screw type lifting platform and the like, has a power-off protection function, and can be safely locked after power is failed.

Description

technical field [0001] The invention relates to an automatic detection anti-falling safety self-locking device, which is used to automatically and effectively brake the lifting platform safely and prevent the platform from falling when the hoisting rope breaks during the lifting process of the lifting platform by detecting the speed change. Background technique [0002] The existing anti-falling safety device of the lifting platform is usually a plug-in type (or pawl type) safety device for breaking the rope. Most of them arrange frames (or ratchets) throughout the guide rail, install movable inserts (or ratchet supports) and springs on the lifting platform, and use the gravity when the lifting platform is lifted (that is, the tension on the lifting wire rope) to make the inserts (or ratchet support) is separated from the frame (or ratchet), and when the rope is broken, the tension on the wire rope disappears, and the spring quickly ejects the plug (or ratchet support), whic...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a self-locking device for automatic detection and anti-fall safety with reasonable structure, safe and reliable, less impact and unnecessary deformation, and wider practicability in view of the shortcomings of the above-mentioned existing overturning devices.

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