Internal-tight type moment pressure plate bolt

Abstract

The invention discloses an internal-tight type moment pressure plate bolt. The invention aims to provide an improved internal-tight type moment pressure plate bolt, which comprises a bolt body. An outer hexagon bolt head is arranged above the bolt body; the bolt body and the outer hexagon bolt head are connected through a breakage part I; and connected inner holes I are formed in the outer hexagon bolt head and the breakage part I. The internal-tight type moment pressure plate bolt is characterized in that a pressure plate is arranged under the bolt body; the bolt body and the pressure plate are connected through a limiting part; a breakage part II is arranged between the limiting part and the pressure plate; the stressed degree of the breakage part II is less than the stressed degree of the breakage part I; when the bolt is screwed to a certain force degree, the breakage part II can be broken, so that the bolt body and the pressure plate are separated, and then the pressure plate cannot rotate along with the bolt body so as not to damage an electric wire. The internal-tight type moment pressure plate bolt provided by the invention has the characteristics of convenience in use, moderation in force degree, solidity and durability, and is mainly used for electrical power cable permanent connection.

Description

technical field [0001] The invention relates to a bolt, in particular to a bolt with an inner tightening torque pressure plate. Background technique [0002] The current bolts for electric power, although the crimping force is sufficient when tightening, the bolts will directly damage the wire core of the wire due to extrusion and tearing, causing the wire core to be damaged or even broken, reducing the conductive area of ​​the wire core and affecting the wire core. In the case of occasional overcurrent, the wire core of the connecting part is damaged and the conductive area is insufficient, which may cause potential safety hazards; there are also connecting devices with bolts and pressure blocks, although it can be achieved It does not hurt the thread, but it needs to use both the bolt and the pressing block at the same time, which is not convenient enough. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an int...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an internal tightening torque pressure plate bolt, which can effectively solve the problems of damage to the wire core and inconvenient use of too many parts when tightening the wire with the bolt, and has the advantages of convenient use and moderate strength. , strong and durable features

Images