CN105757103A - Permanent lock bolt and method for using permanent lock bolt - Google Patents

Abstract

The invention discloses a permanent lock bolt, wherein a C-shaped gasket is arranged on a T-shaped bolt in a sleeving manner; the gasket is made of a spring steel material; the surface of the gasket is provided with saw teeth; one end of the gasket is opened towards the outside of a circle. Saw teeth are arranged in the edge of the bottom surface of the head part of the T-shaped bolt and are mutually meshed with the saw teeth in the gasket; the periphery of the outer end of a bolt hole of a machine member is provided with saw teeth with tooth tips facing the direction of the bolt hole; the inclined surfaces of the saw teeth of the bolt hole face the anticlockwise direction; the bolt can be only rotated in the clockwise direction in the bolt hole of the machine member; when the bolt is rotated in the anticlockwise direction, one end, which is opened outwards, of the C-shaped gasket is jammed on the saw teeth of the machine member. Therefore, the purpose of the lock bolt is achieved.

Description

Permanent check bolt and using method thereof

Technical field

The present invention relates to a kind of permanent check bolt and using method thereof.

Background technology

In the prior art, the parts in some machinery equipments are used mostly bolt and connect, but machine can vibrate in running, and the bolt on some parts can get loose automatically.Existing safeguard procedures have that bonding is locking and to add spring shim locking, bond and locking mostly to destroy threaded fastener when dismounting, it is impossible to reuse.Add spring shim locking, lose locking effect owing to the spring shim effect of being under pressure for a long time can deform upon.For solving the problems referred to above, the invention aims to provide a kind of permanent check bolt, it can effectively prevent bolt from getting loose.

Summary of the invention

Invention is achieved in that offers sawtooth at the edge, head bottom surface of tommyhead bolt, and on bolt, sheathed C shape pad, the face of pad is offered sawtooth, and one end of pad is opened outside circle.The outer end periphery of screw at parts offers sawtooth, and the crown of sawtooth is towards screw direction.The sawtooth of the sawtooth on pad face and bolt head bottom surface is engaged each other, then bolt is screwed in a clockwise direction on the screw of parts.Sawtooth on pad pins the head of bolt when the bolts are tightened, and the sawtooth of parts screw outer end is blocked in pad outwardly one end, thus reaching locking purpose.

Accompanying drawing explanation

Fig. 1 is permanent check bolt and using method schematic diagram thereof.The screw of parts (4) screws tommyhead bolt (1), sheathed C shape pad (2) on bolt.Pad points to anticlockwise one end (3) and opens outside circle, on the face of pad and the head bottom surface of bolt is offered sawtooth respectively and engages each other (6), the outer end periphery of screw at parts (4) offers sawtooth (5), the crown of sawtooth is towards bolt direction, and the inclined-plane of sawtooth is towards counterclockwise.

Detailed description of the invention

Screwing tommyhead bolt 1 on the screw of parts 4 in a clockwise direction, sheathed C shape pad 2 on bolt, pad uses spring steel, and pad points to anticlockwise one end 3 and opens outside circle.On the face of pad and the head bottom surface of bolt is offered sawtooth respectively and engages each other 6.The outer end periphery of the screw of parts offers sawtooth 5, and the crown of sawtooth is towards screw direction, and the inclined-plane of sawtooth is towards counterclockwise.Sawtooth on pad face pins the head of bolt, and the sawtooth of screw outer end is blocked in one end that pad opens.Having elastic C shape pad on bolt can only rotate toward the clockwise direction, rotate when counterclockwise, one end that C shape pad opens just is stuck on the sawtooth of screw outer end.Thus reaching the purpose preventing bolt from getting loose.When disassembly is desired, the sleeve pipe that bottom opening is C shape, entangle C shape pad and rotate counterclockwise, just bolt can be laid down.

Claims (1)

1. a permanent check bolt and using method thereof, it is characterized in that: offer sawtooth at the edge, head bottom surface of tommyhead bolt (1), on bolt, sheathed C shape pad (2), the face of pad is offered sawtooth, and one end (3) of pad is opened outside circle；The outer end periphery of screw at parts offers sawtooth (5), and the crown of sawtooth, towards screw direction, screws bolt in a clockwise direction on the screw of parts.