Aluminum alloy closed hydraulic nut for circular disc shear

Abstract

The invention discloses an aluminum alloy closed hydraulic nut for a circular disc shear, which is used for locking a shear blade of the circular disc shear. Body threads on a nut body are in clearance fit to a circular disc shear shaft, a gasket is attached to a shaft shoulder of the circular disc shear shaft, a circular disc cutter is arranged between the gasket and a spacer, an aluminum alloy hydraulic nut locks the circular disc cutter on the circular disc shear shaft through the spacer, the spacer is pressed by a pressing ring, and a spigot of the pressing ring is attached to the end surface of an annular groove of the nut body; the nut body is made of an aluminum alloy material, three plunger assemblies and one indicating rod assembly are tangentially distributed in the nut body, anoil filling nozzle, which is mounted on the nut body and connected to one hole of annular groove oil holes, communicates with plunger oil holes of the three plunger assemblies and an indicating rod oil hole, and the three plunger oil holes communicate with one another; a closed hydraulic nut structure is formed among the plunger oil holes, the indicating rod oil hole and the nut body, and a plug connected to a second annular groove oil hole is mounted on the nut body. The aluminum alloy closed hydraulic nut is light in weight, convenient and fast to assemble and disassemble, stable in intra-cavity pressure value and uniform in locking force.

Description

technical field [0001] The invention relates to the technical field of hydraulic locking, in particular to an aluminum alloy closed hydraulic nut on a disc shear for locking the cutting edge of the disc shear. Background technique [0002] The disc shear is an important equipment on the trimming line. Its running stability is directly related to the shearing quality of the edge of the strip. The hydraulic nut is a hydraulic device integrated on the mechanical nut, which is connected by hydraulic jacking force. The special nut for locking the object is the key part of locking the disc cutting edge. It changes the traditional torque thread locking to the axial tension pre-tightening locking method. It is easy to install and maintain, and can protect the thread of the installation shaft. ,The product quality of the hydraulic nut is a reliable guarantee for the stable operation of the disc shears and the quality of the edge of the strip. [0003] However, the disc shears in the...

AI Technical Summary

Problems solved by technology

[0004] 1. The larger the thread specification of the traditional mechanical nut, the more difficult it is to lock and prevent loosening. After the equipment has been running for a period of time, it is easy to loosen, the installation and disassembly are laborious, and the thread of the installation shaft is easy to be damaged, resulting in the scrapping of the installation shaft and making the equipment unusable.

[0005] 2. The open hydraulic nut needs to add an external fuel pump, and the oil drain joint needs to be frequently disassembled. The leaked hydraulic oil will pollute the surrounding environment of the equipment, causing people to step on the leaked oil and wrestle, posing a safety hazard

[0006] 3. The nut bodies of traditional hydraulic nuts and open hydraulic nuts are steel parts. The larger the specification, the greater the product quality, and it is not easy to install

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