CN201053429Y

CN201053429Y - Thrust-stopping fastening screw bolt structure and thrust washer

Info

Publication number: CN201053429Y
Application number: CNU2007200054774U
Authority: CN
Inventors: 宋旭超
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-28
Filing date: 2007-05-28
Publication date: 2008-04-30
Anticipated expiration: 2017-05-28

Abstract

The utility model provides a backstop fastening bolt structure, comprising a bolt with groove, a backstop gasket and a nut, wherein, the middle part of the bolt with groove is provided with a protruding shoulder; the two ends of the protruding shoulder are provided with an outside threads section, and at least one outside threads section is axially provided with a backstop groove to form a threads section with groove; the backstop gasket is provided with a gasket body, an internal tooth and a plurality of external teeth; the gasket body is sleeved on the threads section with groove; the gasket body extends radially inwards and is bended axially to form the internal tooth which is embedded inside the backstop groove; the gasket body extends radially outwards to form the external teeth; the nut is arranged on the threads section with groove; the external teeth are bended and jointed with the periphery surface of the nut. The utility model can guarantee the unscrewing and the safety of life and property.

Description

Retaining clamping bolt structure and the stopping shim that is exclusively used in this structure

Technical field

The utility model relates to the clamping bolt structure, is meant a kind of railway track sleeper clamping bolt especially, and also feature refers to a kind of contact net clamping bolt.

Background technique

Plain bolt relies on the anti-retaining of auto-lock function between the bolts and nuts to buckle at present, though under static situation, can keep fastening, but under the situation that has vibration, moving back button happens occasionally, serious, will cause mechanical accident, so must running check, maintenance, maintenance workload is big, and still can not guarantee safety.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model is: the stopping shim that a kind of retaining clamping bolt structure is provided and is exclusively used in this structure guarantees that really the clamping bolt structure do not move back button.

For achieving the above object, the technical solution adopted in the utility model comprises:

A kind of retaining clamping bolt structure, comprise trough of belt bolt, stopping shim and nut, it is characterized in that: described trough of belt bolt middle part is provided with convex shoulder, and two ends are provided with external thread section, axially offer the retaining groove on wherein at least one place external thread section, form the trough of belt thread section; Described stopping shim comprises shim body, an internal tooth and several external tooths, and described shim body is set on the trough of belt thread section, and described internal tooth is inwardly radially to be extended by shim body axially to be bent to form again, and internal tooth is embedded in the retaining groove; Described external tooth is to be extended to form by the shim body outward radial; Described nut is arranged on the described trough of belt thread section, and described external tooth bending also is fitted in the nut outer circumferential face.

For achieving the above object, the technical solution adopted in the utility model also comprises:

A kind of stopping shim is characterized in that: described stopping shim comprises shim body, an internal tooth and several external tooths, and described internal tooth is inwardly radially to be extended by shim body axially to be bent to form again; Described external tooth is to be extended to form by the shim body outward radial.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: can guarantee that the clamping bolt structure do not move back button, avoid the generation of accident.

Description of drawings

Fig. 1 is the utility model decomposition texture schematic representation;

Fig. 2 is the utility model scheme of installation (one);

Fig. 3 is the utility model scheme of installation (two).

Embodiment

As shown in Figure 1, the utility model retaining clamping bolt structure comprises trough of belt bolt 10, stopping shim 20 and nut 30, wherein:

Described trough of belt bolt 10 middle parts are provided with convex shoulder 11, and two ends are provided with external thread section, and axially offering on wherein at least one place external thread section does not influence the retaining of its structural strength groove 12, form trough of belt thread section 13;

Described stopping shim 20 comprises shim body 21, internal tooth 22 and four external tooths 23, and described internal tooth 22 is inwardly radially to be extended by shim body 21 axially to be bent to form again; Described external tooth 23 is to be extended to form by shim body 21 outward radials;

Described nut 30 is common hexagon nuts.

During installation,, the through hole for the treatment of fixture 40 is located on the trough of belt thread section 13 as Fig. 2, shown in Figure 3, and the convex shoulder 11 that reclines; Then stopping shim 20 is set on the trough of belt thread section 13, described internal tooth 22 is embedded in described retaining groove 12; Then be arranged in nut 30 on the trough of belt thread section 13 and tighten; At last, as shown in Figure 3, tool using bends described external tooth 23 and be fitted in the outer circumferential face 31 of nut 30.

So, spacing by internal tooth 22 and retaining groove 12 makes the described stopping shim 20 can't be around described trough of belt bolt 10 rotations; Simultaneously, the outer circumferential face 31 by external tooth 23 and nut 30 spacing makes described stopping shim 20 can't rotate relatively with described nut 30; Thereby nut 30 can't be rotated by described relatively trough of belt bolt 10, prevented to move back the generation of button.

Above-mentioned nut also can be four corner bolts, and described external tooth number can 1～8, all can reach goal of the invention of the present utility model.

More than explanation is just illustrative for the utility model, and it is nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited, can make many modifications, variation or equivalence, but but all will fall within the claim restricted portion of the present utility model.

Claims

1. a retaining clamping bolt structure comprises trough of belt bolt, stopping shim and nut, it is characterized in that:

Described trough of belt bolt middle part is provided with convex shoulder, and two ends are provided with external thread section, axially offer the retaining groove on wherein at least one place external thread section, form the trough of belt thread section;

Described stopping shim comprises shim body, an internal tooth and several external tooths, and described shim body is set on the trough of belt thread section, and described internal tooth is inwardly radially to be extended by shim body axially to be bent to form again, and internal tooth is embedded in the retaining groove; Described external tooth is to be extended to form by the shim body outward radial;

Described nut is arranged on the described trough of belt thread section, and described external tooth bending also is fitted in the nut outer circumferential face.

2. stopping shim, it is characterized in that: described stopping shim comprises shim body, an internal tooth and several external tooths, described internal tooth is inwardly radially to be extended by shim body axially to be bent to form again; Described external tooth is to be extended to form by the shim body outward radial.