Hydraulic clamp

Abstract

The invention discloses a hydraulic clamp. The hydraulic clamp comprises a clamp body with an air inlet and a brake unit, wherein the brake unit is composed of two brake plate assemblies opposite to each other with a gap therebetween; the brake plate assembly on a left side is fixed with the clamp body, while the brake plate assembly on a right side is connected with a bushing; a seal seat of which an outer surface is in seal fit with an inner cavity of the clamp body is fixed on the bushing; a seal cavity formed by the seal seat with the clamp body and the bushing communicates with an oil inlet; a disc spring is arranged between the bushing and the clamp body; moreover, the hydraulic clamp is characterized in that: the bushing is of a split structure and an exterior of the bushing is a hollow bushing; a push rod connected with the brake plate assembly is arranged at a left end within the inner cavity of the bushing, while a bolt that is externally connected with the bushing through threads and provided with an inner hole having at least one segment of section in a hexagonal or irregular shape is arranged on the right within the inner cavity; and an adjusting rod of which an external surface is matched with the inner hole in the hexagonal or irregular shape of the bolt is arranged in the inner hole of the bolt. The hydraulic clamp is capable of adjusting the travel of a friction plate, and is long in service life and low in cost.

Description

technical field [0001] The invention relates to a hydraulic pliers, in particular to a hydraulic pliers for tower crane brakes. Background technique [0002] At present, hydraulic calipers are used for brakes of tower cranes. After the friction plate in the brake unit is worn out, the stroke cannot be adjusted. When the friction force cannot meet the braking requirements, it can only be replaced as a whole. The service life is short and the cost is high. Contents of the invention [0003] In view of the above-mentioned defects in the prior art, the present invention aims to provide a hydraulic pliers capable of adjusting the stroke of the friction plate, with long service life and low cost. [0004] In order to achieve the above object, the present invention adopts the following technical solution: it includes a caliper body provided with an oil inlet, and a brake unit, wherein the brake unit is composed of two sets of brake plate assemblies with gaps left in the middle, a...

AI Technical Summary

Problems solved by technology

[0002] At present, hydraulic calipers are used for brakes of tower cranes. After the friction plates in the brake unit are worn out, the stroke cannot be adjusted. When the friction force cannot meet the braking needs, they can only be replaced as a whole. The service life is short and the cost is high.

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