CN203051389U - Easy-to-disassemble preloaded bolt - Google Patents

Easy-to-disassemble preloaded bolt Download PDF

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Publication number
CN203051389U
CN203051389U CN 201220629827 CN201220629827U CN203051389U CN 203051389 U CN203051389 U CN 203051389U CN 201220629827 CN201220629827 CN 201220629827 CN 201220629827 U CN201220629827 U CN 201220629827U CN 203051389 U CN203051389 U CN 203051389U
Authority
CN
China
Prior art keywords
bolt
bolt head
threaded
spring
disassemble
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 201220629827
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 201220629827 priority Critical patent/CN203051389U/en
Application granted granted Critical
Publication of CN203051389U publication Critical patent/CN203051389U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses an easy-to-disassemble 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. A shallow groove parallel to the axis of the threaded rod is formed in the threaded section. The preloaded bolt is simple in structure and convenient to use; the phenomenon that the bolt rotates along with a nut is effectively prevented, and the working efficiency is improved; and by the design of the shallow groove formed in the threaded section of the threaded rod, when the bolt which is rusted is difficult to disassemble, lubricating oil can be added from the shallow groove, so that disassembly operation is effectively facilitated.

Description

The quick detachable bolt of a kind of pre-tensioned type
Technical field
The utility model relates to a kind of mechanical fastener, is specially the quick detachable bolt of a kind of pre-tensioned type.
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, usually be not easy to vacate two hands and turn round a bolt simultaneously, when nut began to screw, bolt was followed nut easily and is rotated together like this, make nut disposablely not screw, prolonged the operating time, inefficiency, and after long-time the use, bolt is fixed together with nut because getting rusty easily, and dismounting is convenient inadequately.
The model utility content
The purpose of this utility model provides the quick detachable bolt of a kind of pre-tensioned type, to solve bolt traditional in the prior art in use, following nut easily rotates together, make nut disposablely not screw, prolong the operating time, influenced working efficiency, and after long-time the use, bolt is fixed together with nut because getting rusty easily, dismantles inadequately problem easily.
For achieving the above object, the technical solution adopted in the utility model is:
The quick detachable bolt of a kind of pre-tensioned type, 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, 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, and described thread section is provided with the shallow slot parallel with screw axis.
The quick detachable bolt of described a kind of pre-tensioned type is characterized in that: described bolt head is cylindrical no bevel bolt head.
The quick detachable bolt of described a kind of pre-tensioned type, it is characterized in that: described shallow slot is at least one, and the shallow slot degree of depth is 1-3mm.
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; Employing arranges the design of shallow slot in the screw flight section, when not quick detachable because get rusty when bolt, can add lubricant oil from shallow slot, thereby make things convenient for disassembling section effectively.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the quick detachable bolt of a kind of pre-tensioned type, 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, screw rod 2 upper ends are polished rod section 5, the lower end is thread section 6, is with pad 7 on the polished rod section 5, is connected with spring 8 between pad 7 and the bolt head 1, spring 8 upper ends are clamped in the annular groove 4, and thread section 6 is provided with the shallow slot 9 parallel with screw rod 2 axis.
Bolt head 1 is cylindrical no bevel bolt head.Shallow slot 9 is at least one, and shallow slot 9 degree of depth are 1-3mm.

Claims (3)

1. quick detachable bolt of pre-tensioned type, 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, 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, and described thread section is provided with the shallow slot parallel with screw axis.
2. the quick detachable bolt of a kind of pre-tensioned type according to claim 1, it is characterized in that: described bolt head is cylindrical no bevel bolt head.
3. the quick detachable bolt of a kind of pre-tensioned type according to claim 1, it is characterized in that: described shallow slot is at least one, and the shallow slot degree of depth is 1-3mm.
CN 201220629827 2012-11-25 2012-11-25 Easy-to-disassemble preloaded bolt Expired - Fee Related CN203051389U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220629827 CN203051389U (en) 2012-11-25 2012-11-25 Easy-to-disassemble preloaded bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220629827 CN203051389U (en) 2012-11-25 2012-11-25 Easy-to-disassemble preloaded bolt

Publications (1)

Publication Number Publication Date
CN203051389U true CN203051389U (en) 2013-07-10

Family

ID=48734347

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220629827 Expired - Fee Related CN203051389U (en) 2012-11-25 2012-11-25 Easy-to-disassemble preloaded bolt

Country Status (1)

Country Link
CN (1) CN203051389U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104274236A (en) * 2014-09-18 2015-01-14 常州市江浪铸造有限公司 Auxiliary bone nail
CN104373443A (en) * 2014-10-27 2015-02-25 苏州市吴中区光福金凤五金厂 Self-lubricating bolt

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104274236A (en) * 2014-09-18 2015-01-14 常州市江浪铸造有限公司 Auxiliary bone nail
CN104373443A (en) * 2014-10-27 2015-02-25 苏州市吴中区光福金凤五金厂 Self-lubricating bolt
CN104373443B (en) * 2014-10-27 2016-08-24 苏州中拓专利运营管理有限公司 A kind of self-lubricating bolt

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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