CN203051410U - Preloaded bolt - Google Patents

Preloaded bolt Download PDF

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Publication number
CN203051410U
CN203051410U CN 201220627983 CN201220627983U CN203051410U CN 203051410 U CN203051410 U CN 203051410U CN 201220627983 CN201220627983 CN 201220627983 CN 201220627983 U CN201220627983 U CN 201220627983U CN 203051410 U CN203051410 U CN 203051410U
Authority
CN
China
Prior art keywords
bolt
bolt head
spring
nut
gasket
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 201220627983
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 201220627983 priority Critical patent/CN203051410U/en
Application granted granted Critical
Publication of CN203051410U publication Critical patent/CN203051410U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a preloaded bolt, which comprises a bolt head and a threaded rod. A step is arranged on the lower end face of the bolt head. A circular groove is formed between the step and the edge of the lower end face of the bolt head. The upper end of the threaded rod is a polished rod section, and the lower end of the threaded rod is a threaded section. A gasket is sleeved on the polished rod section. A spring is connected between the gasket and the bolt head. The upper end of the spring is clamped in the circular groove. The preloaded bolt is simple in structure and convenient to use; and by the design of the gasket connected to the lower end face of the bolt head through the spring, when the bolt is connected with a nut, the gasket is pressed against the surface of a part through the spring, so that the bolt head is subjected to certain pressure which is increased along with the tightening of the nut to effectively prevent the phenomenon that the bolt rotates along with the nut and improve the working efficiency.

Description

A kind of pre-tensioned type bolt
Technical field
The utility model relates to a kind of mechanical fastener, is specially 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 was followed nut easily and is rotated together, make nut disposablely not screw, prolonged the operating time, inefficiency.
The model utility content
The purpose of this utility model provides a kind of pre-tensioned type bolt, to solve bolt traditional in the prior art in use, follows nut easily and rotates 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:
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, be provided with annular groove between the edge of described step and bolt head lower end surface, described screw rod upper end is the polished rod section, and the lower end is thread section, is 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.
Described a kind of pre-tensioned type bolt 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 connected, pad pushed against at part surface by spring, made 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, has improved working efficiency.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of pre-tensioned type bolt, include bolt head 1 and screw rod 2, bolt head 1 lower end surface is provided with step 3, is provided with annular groove 4 between the edge of step 3 and bolt head 1 lower end surface, and screw rod 2 upper ends are polished rod section 5, the lower end is thread section 6, be 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.Bolt head 1 is cylindrical no bevel bolt head.

Claims (2)

1. 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, be provided with annular groove between the edge of described step and bolt head lower end surface, described screw rod upper end is the polished rod section, and the lower end is thread section, is 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.
2. a kind of pre-tensioned type bolt according to claim 1, it is characterized in that: described bolt head is cylindrical no bevel bolt head.
CN 201220627983 2012-11-25 2012-11-25 Preloaded bolt Expired - Fee Related CN203051410U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220627983 CN203051410U (en) 2012-11-25 2012-11-25 Preloaded bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220627983 CN203051410U (en) 2012-11-25 2012-11-25 Preloaded bolt

Publications (1)

Publication Number Publication Date
CN203051410U true CN203051410U (en) 2013-07-10

Family

ID=48734368

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220627983 Expired - Fee Related CN203051410U (en) 2012-11-25 2012-11-25 Preloaded bolt

Country Status (1)

Country Link
CN (1) CN203051410U (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938773A (en) * 2014-04-25 2014-07-23 湖南省金为型材有限公司 Anti-loosening fastening device and curtain wall
CN103938774A (en) * 2014-04-25 2014-07-23 湖南省金为型材有限公司 Anti-loosening fastening device and curtain wall
CN104214184A (en) * 2014-08-30 2014-12-17 秦在荣 Screw with baffle plate
CN105090211A (en) * 2015-09-02 2015-11-25 无锡市东赫金属制品有限公司 Fastening bolt
CN105351331A (en) * 2015-10-30 2016-02-24 无锡市东赫金属制品有限公司 Nut with spring and washer
CN106089929A (en) * 2016-08-25 2016-11-09 安徽六方重联机械股份有限公司 Pre-tensioned type bolt
CN106089925A (en) * 2016-08-25 2016-11-09 安徽六方重联机械股份有限公司 Elastic pre-tensioned type bolt
CN106402128A (en) * 2016-10-13 2017-02-15 广东坚朗五金制品股份有限公司 T-shaped bolt
CN107939811A (en) * 2017-11-16 2018-04-20 庞群 A kind of anticreep derotation screw group
CN109026951A (en) * 2018-09-30 2018-12-18 苏州创而丰五金科技有限公司 One kind being fastenedly connected metalwork

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938773A (en) * 2014-04-25 2014-07-23 湖南省金为型材有限公司 Anti-loosening fastening device and curtain wall
CN103938774A (en) * 2014-04-25 2014-07-23 湖南省金为型材有限公司 Anti-loosening fastening device and curtain wall
CN103938774B (en) * 2014-04-25 2016-06-08 湖南省金为型材有限公司 Locking clamp device and curtain wall
CN104214184A (en) * 2014-08-30 2014-12-17 秦在荣 Screw with baffle plate
CN105090211A (en) * 2015-09-02 2015-11-25 无锡市东赫金属制品有限公司 Fastening bolt
CN105351331A (en) * 2015-10-30 2016-02-24 无锡市东赫金属制品有限公司 Nut with spring and washer
CN106089929A (en) * 2016-08-25 2016-11-09 安徽六方重联机械股份有限公司 Pre-tensioned type bolt
CN106089925A (en) * 2016-08-25 2016-11-09 安徽六方重联机械股份有限公司 Elastic pre-tensioned type bolt
CN106402128A (en) * 2016-10-13 2017-02-15 广东坚朗五金制品股份有限公司 T-shaped bolt
CN107939811A (en) * 2017-11-16 2018-04-20 庞群 A kind of anticreep derotation screw group
CN109026951A (en) * 2018-09-30 2018-12-18 苏州创而丰五金科技有限公司 One kind being fastenedly connected metalwork

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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