Braking and clutching device of a lever hoist

Abstract

The invention discloses a brake clutch device of a lever block. The brake clutch device comprises a brake base arranged on a long shaft of the lever block, a brake ratchet, an inverting ratchet, a torsion spring base, a handwheel and a fixed part, wherein the brake base and the long shaft are circumferentially fixed; two sides of the brake ratchets are respectively provided with friction plates; the inverting ratchet is in threaded connection with the long shaft; the torsion spring base and the inverting ratchet are circumferentially fixed; the long shaft between the torsion spring base and the handwheel is sleeved by a torsion spring; a spring steel ball is arranged between the torsion spring base and the handwheel; the end surface of the torsion spring base is provided with a concave part capable of accommodating the spring steel ball; the handwheel and the long shaft are circumferentially fixed; the surface of the handwheel is provided with indication points for indicating relative position changes of the handwheel and the torsion spring base; the end surface of the torsion spring base is provided with an indication region for displaying the position changes of the indication points. The brake clutch device has the advantage that the abrasion states of the friction plates can be directly observed without detaching the lever block, so that the friction plate can be replaced in time.

Description

technical field [0001] The invention belongs to the technical field of hoisting equipment, and in particular relates to a brake clutch device for a lever hoist. Background technique [0002] The lever hoist is manually pulled by the wrench, and with the help of the principle of leverage, it can obtain a linear traction that matches the load, so as to drive the weight to move up and down. Due to the small size and light weight of the lever block, it is very convenient to carry and operate, and is suitable for heavy objects of small tonnage. [0003] The existing lever hoist mainly adopts a brake ratchet, a friction plate, a reversing ratchet, and a positioning part on the long axis in sequence. The reversing ratchet and the long axis are connected by threads. The reversing pawl on the wrench meshes with the reversing ratchet. When the wrench is pulled, the reversing ratchet can be driven to rotate by the wrench. Along with the axial movement, the friction plate is pressed, ...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a braking clutch device for a lever hoist, aiming at the problem of inconvenient disassembly and assembly of the lever hoist when checking the wear state of the friction plate of the lever hoist in the prior art. The clutch device can observe the wear of the friction plate in real time without dismantling the lever block. When the friction plate wears too much, it is convenient and safe to disassemble the lever block in time and replace the friction plate.

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