CN203051406U - Pre-tightening anti-linkage bolt - Google Patents

Pre-tightening anti-linkage bolt Download PDF

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Publication number
CN203051406U
CN203051406U CN 201220629855 CN201220629855U CN203051406U CN 203051406 U CN203051406 U CN 203051406U CN 201220629855 CN201220629855 CN 201220629855 CN 201220629855 U CN201220629855 U CN 201220629855U CN 203051406 U CN203051406 U CN 203051406U
Authority
CN
China
Prior art keywords
bolt
bolt head
screw rod
spring
tightening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220629855
Other languages
Chinese (zh)
Inventor
王立新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Liufang Zhonglian Mechanical Share Co Ltd
Original Assignee
Anhui Liufang Zhonglian Mechanical Share Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Liufang Zhonglian Mechanical Share Co Ltd filed Critical Anhui Liufang Zhonglian Mechanical Share Co Ltd
Priority to CN 201220629855 priority Critical patent/CN203051406U/en
Application granted granted Critical
Publication of CN203051406U publication Critical patent/CN203051406U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a pre-tightening anti-linkage bolt, which comprise a bolt head and a screw rod, wherein a step is arranged on the lower end face of the bolt head; annular grooves are formed between the step and the edge of the lower end face of the bolt head; the upper end of the screw rod is a polished rod segment, and the lower end of the screw rod is a threaded segment; a gasket is sleeved on the polished rod segment; a spring is connected between the gasket and the bolt head; the upper end of the spring is clamped in the annular grooves; a concave hole is formed in the end part of the lower end of the screw rod; and the concave hole is an inner quadrilateral or inner hexangular concave hole. The pre-tightening anti-linkage bolt is simple in structure, and is convenient to use; and a plurality of conical teeth which project downwards are arranged on the lower end face of the bolt head along the edge, and the end part of the screw rod is provided with the concave hole, so that the phenomenon that the bolt rotates along with a nut can be avoided effectively, and the working efficiency is increased.

Description

The anti-interlock of a kind of pre-tensioned type bolt
Technical field
The utility model relates to a kind of mechanical fastener, is specially the anti-interlock of a kind of pre-tensioned type bolt.
Background technique
Bolt is widely used in the connection between the part as mechanical fastener.Generally, can the bolt head on the screw rod be fixed by spanner when screwing nut, when nut begins to screw, be unlikely to make screw rod and then to rotate like this.And under the operating conditions that has, such as the aerial power equipment of height, wherein also use bolt connection piece, this moment inconvenient operation, when nut began to screw, bolt may and then rotate, make nut disposablely not screw, prolonged the operating time, inefficiency.
The model utility content
The purpose of this utility model provides the anti-interlock of a kind of pre-tensioned type bolt, to solve bolt traditional in the prior art in use, may follow nut to rotate together, makes nut disposablely not screw, and has prolonged the operating time, influences the problem of working efficiency.
For achieving the above object, the technical solution adopted in the utility model is:
The anti-interlock of a kind of pre-tensioned type bolt, include bolt head and screw rod, it is characterized in that: described bolt head lower end surface is provided with step, is provided with annular groove between the edge of described step and bolt head lower end surface, and described screw rod upper end is the polished rod section, the lower end is thread section, be with pad on the described polished rod section, be connected with spring between described pad and the bolt head, described spring upper end is clamped in the annular groove, end, described screw rod lower end is provided with shrinkage pool, and described shrinkage pool is interior four jiaos or interior hexagonal shrinkage pool.
The anti-interlock of described a kind of pre-tensioned type bolt, it is characterized in that: described bolt head is cylindrical no bevel bolt head.
The beneficial effects of the utility model are:
The utility model is simple in structure, easy to use, employing connects the design of pad by spring in the bolt head lower end surface, when bolts and nuts connect, pad pushes against at part surface by spring, makes bolt head obtain certain pressure, along with screwing of nut, this pressure is more big, has prevented that effectively bolt from following the generation of nut rotation phenomenon; Employing arranges the design of shrinkage pool in the screw rod end, can be stuck in the shrinkage pool by instrument when bolting on, and further prevents the bolts and nuts interlock, has improved working efficiency.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the anti-interlock of a kind of pre-tensioned type bolt includes bolt head 1 and screw rod 2, and bolt head 1 lower end surface is provided with step 3, be provided with annular groove 4 between the edge of step 3 and bolt head 1 lower end surface, screw rod 2 upper ends are polished rod section 5, and the lower end is thread section 6, is with pad 7 on the polished rod section 5, be connected with spring 8 between pad 7 and the bolt head 1, spring 8 upper ends are clamped in the annular groove 4, and end, screw rod 2 lower end is provided with shrinkage pool 9, and shrinkage pool 9 is interior four jiaos or interior hexagonal shrinkage pool.Bolt head 1 is cylindrical no bevel bolt head.

Claims (2)

1. a pre-tensioned type is prevented the interlock bolt, include bolt head and screw rod, it is characterized in that: described bolt head lower end surface is provided with step, is provided with annular groove between the edge of described step and bolt head lower end surface, and described screw rod upper end is the polished rod section, the lower end is thread section, be with pad on the described polished rod section, be connected with spring between described pad and the bolt head, described spring upper end is clamped in the annular groove, end, described screw rod lower end is provided with shrinkage pool, and described shrinkage pool is interior four jiaos or interior hexagonal shrinkage pool.
2. a kind of pre-tensioned type according to claim 1 is prevented the interlock bolt, and it is characterized in that: described bolt head is cylindrical no bevel bolt head.
CN 201220629855 2012-11-25 2012-11-25 Pre-tightening anti-linkage bolt Expired - Fee Related CN203051406U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220629855 CN203051406U (en) 2012-11-25 2012-11-25 Pre-tightening anti-linkage bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220629855 CN203051406U (en) 2012-11-25 2012-11-25 Pre-tightening anti-linkage bolt

Publications (1)

Publication Number Publication Date
CN203051406U true CN203051406U (en) 2013-07-10

Family

ID=48734364

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220629855 Expired - Fee Related CN203051406U (en) 2012-11-25 2012-11-25 Pre-tightening anti-linkage bolt

Country Status (1)

Country Link
CN (1) CN203051406U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089924A (en) * 2016-08-25 2016-11-09 安徽六方重联机械股份有限公司 The bolt of two-sided pretension
CN106151215A (en) * 2016-08-15 2016-11-23 钦州学院 A kind of the most stubborn bolt with cross threaded end
CN110500457A (en) * 2019-08-31 2019-11-26 王浩宇 A kind of stainless steel tube being easily installed connection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106151215A (en) * 2016-08-15 2016-11-23 钦州学院 A kind of the most stubborn bolt with cross threaded end
CN106089924A (en) * 2016-08-25 2016-11-09 安徽六方重联机械股份有限公司 The bolt of two-sided pretension
CN110500457A (en) * 2019-08-31 2019-11-26 王浩宇 A kind of stainless steel tube being easily installed connection
CN110500457B (en) * 2019-08-31 2021-02-09 杭州冈固管业有限公司 Stainless steel pipe convenient to erection joint

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130710

Termination date: 20131125

C17 Cessation of patent right