CN205908609U - Controllable anti -loosening connecting structure of engine cylinder housing pretightning force - Google Patents

Controllable anti -loosening connecting structure of engine cylinder housing pretightning force Download PDF

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Publication number
CN205908609U
CN205908609U CN201620662393.7U CN201620662393U CN205908609U CN 205908609 U CN205908609 U CN 205908609U CN 201620662393 U CN201620662393 U CN 201620662393U CN 205908609 U CN205908609 U CN 205908609U
Authority
CN
China
Prior art keywords
bolt
spring
engine
pretightning force
cylinder cap
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
CN201620662393.7U
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Chinese (zh)
Inventor
石岩石
张坤鹏
贾新颖
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.)
Tianjin Lovol Engines Co Ltd
Original Assignee
Tianjin Lovol Engines 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 Tianjin Lovol Engines Co Ltd filed Critical Tianjin Lovol Engines Co Ltd
Priority to CN201620662393.7U priority Critical patent/CN205908609U/en
Application granted granted Critical
Publication of CN205908609U publication Critical patent/CN205908609U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a controllable anti -loosening connecting structure of engine cylinder housing pretightning force, including the bolt assembly of engine and cylinder cap cover and connection engine and cylinder cap cover, its characterized in that: bolt assembly includes bolt, spring, the bolt includes the screw rod body, the upper end of screw rod body is equipped with the nut, below an organic whole of nut is equipped with the pressure cap, overlap the shock mount on the screw rod body, the lower extreme of screw rod body passes cylinder cap cover and engine threaded connection, the last surface contact of spring and cylinder cap cover. Adopt above -mentioned technical scheme, the elasticity that utilizes on the one hand the spring makes that contact force increases between the screw thread, and frictional force increases between the screw thread, has strengthened the fastening effect, but on the other hand utilizes the decrement of spring and the pretightning force of rigidity value close check bolt. The problem of take off and aluminium system cylinder cap cover easily produces the conquassation under the mistake king -bolt pretightning force the pine of thruster operation in -process cylinder cap cover bolt is solved, and require simple structure, low cost.

Description

The controlled anti-loosing connecting structure of cylinder cover of engine pretightning force
Technical field
This utility model belongs to cylinder cover of engine interconnection technique field, more particularly to a kind of cylinder cover of engine pretension The controlled anti-loosing connecting structure of power.
Background technology
At present, the installation of available engine cylinder head cover adopts simple bolt-connection, on the one hand due to engine cycle Frequent vibration, the bolt of cylinder cover of engine is also easy to produce lax, obscission, causes sealing to destroy;On the other hand, excessive Bolt pretightening can make aluminum cylinder head cover produce conquassation destroy;It is thus desirable to special device come pre- to cylinder head cover bolt It is above-mentioned to avoid the occurrence of that clamp force gives control.Prior art is combined with plain cushion, spring washer using bolt Mode locking to carry out, carry out the control of pretightning force using calibrated wrench method, in addition, also other pretension force control methods, As measured bolt elongate method, strain gauge method, hydraulic stretch method etc.;Though prior art is strengthened to a certain extent using spring washer Anti-loosing effect, but the phenomenon that bolt gets loose still can occur, the anti-loosing effect of spring washer is not strong;Or prior art is difficult to The pretightning force of bolt is accurately controlled, error is larger, otherwise expensive, program complicated it is impossible to make full use of bolt Pretightning force.
Content of the invention
This utility model provides for solving technical problem present in known technology that a kind of structure is simple, the side of installing and using Just, solve engine operation process in cylinder head cover bolt get loose and aluminum cylinder head cover is also easy to produce pressure under excessive bolt pretightening Routed problem, and require structure simple, the controlled anti-loosing connecting structure of cylinder cover of engine pretightning force with low cost.
This utility model is adopted the technical scheme that by solving technical problem present in known technology:
A kind of controlled anti-loosing connecting structure of cylinder cover of engine pretightning force, sends out including electromotor and cylinder head cover and connection The bolt assembly of motivation and cylinder head cover it is characterised in that: described bolt assembly includes bolt, spring, and described bolt includes screw rod Body, the upper end of described screw body is provided with nut, and the lower section of described nut is integrally formed with pressure cap;It is set with described screw body Spring, the lower end of described screw body is connected through cylinder head cover with engine thread, and described spring is connect with the upper surface of cylinder head cover Touch.
This utility model can also adopt following technical measures:
The upper end of described spring is welded on the lower surface of pressure cap.
This utility model has the advantages and positive effects that: because this utility model adopts technique scheme, a side Face makes contact pressure between screw thread increase using the elastic force of spring, and between screw thread, frictional force increases, and enhances fastening effect;The opposing party Face can strictly control the pretightning force of bolt using the decrement of spring and its rigidity value.Solve cylinder cap in engine operation process Cover bolt get loose and aluminum cylinder head cover is also easy to produce the problem of conquassation under excessive bolt pretightening, and require structure simple, become This is cheap.
Brief description
Fig. 1 is structural representation of the present utility model.
In figure: 1, bolt;1-1, screw body;1-2, nut;2nd, spring;3rd, pressure cap;4th, cylinder head cover;5th, electromotor.
Specific embodiment
For content of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following examples, and coordinate Accompanying drawing describes in detail as follows:
Refer to Fig. 1, a kind of controlled anti-loosing connecting structure of cylinder cover of engine pretightning force, including electromotor and cylinder head cover And connecting the bolt assembly of electromotor and cylinder head cover, described bolt assembly includes bolt 1, spring 2, and described bolt includes screw rod Body 1-1, the upper end of described screw body is provided with nut 1-2, and the lower section of described nut is integrally formed with pressure cap 3;Described screw rod is originally Pocketed springs 2 on body, threadeded through cylinder head cover 4 with electromotor 5 in the lower end of described screw body 1-1, described spring and cylinder The upper surface of housing.
In order to improve efficiency of assembling, reduce the loss of spring, the upper end of described spring is welded on the lower surface of pressure cap.
Because this utility model adopts technique scheme, on the one hand make contact pressure between screw thread using the elastic force of spring Increase, between screw thread, frictional force increases, and enhances fastening effect;On the other hand decrement and its rigidity value using spring can be strict Control the pretightning force of bolt.Solve in engine operation process cylinder head cover bolt get loose and aluminum cylinder head cover cross king-bolt It is also easy to produce the problem of conquassation under pretightning force, and require structure simple, with low cost.
The above is only to preferred embodiment of the present utility model, not this utility model is made any formal Restriction, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations with Modify, belong in the range of technical solutions of the utility model.

Claims (2)

1. the controlled anti-loosing connecting structure of a kind of cylinder cover of engine pretightning force, starts including electromotor and cylinder head cover and connection The bolt assembly of machine and cylinder head cover it is characterised in that: described bolt assembly includes bolt, spring, described bolt include screw rod this Body, the upper end of described screw body is provided with nut, and the lower section of described nut is integrally formed with pressure cap;On described screw body, set shoots Spring, the lower end of described screw body is connected through cylinder head cover with engine thread, the upper surface of described spring and cylinder head cover.
2. the controlled anti-loosing connecting structure of cylinder cover of engine pretightning force according to claim 1 it is characterised in that: described The upper end of spring is welded on the lower surface of pressure cap.
CN201620662393.7U 2016-06-24 2016-06-24 Controllable anti -loosening connecting structure of engine cylinder housing pretightning force Expired - Fee Related CN205908609U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620662393.7U CN205908609U (en) 2016-06-24 2016-06-24 Controllable anti -loosening connecting structure of engine cylinder housing pretightning force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620662393.7U CN205908609U (en) 2016-06-24 2016-06-24 Controllable anti -loosening connecting structure of engine cylinder housing pretightning force

Publications (1)

Publication Number Publication Date
CN205908609U true CN205908609U (en) 2017-01-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620662393.7U Expired - Fee Related CN205908609U (en) 2016-06-24 2016-06-24 Controllable anti -loosening connecting structure of engine cylinder housing pretightning force

Country Status (1)

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CN (1) CN205908609U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106015266A (en) * 2016-06-24 2016-10-12 天津雷沃动力有限公司 Looseness-prevention connecting structure with controllable pretightening force of engine cylinder head cover
CN112340598A (en) * 2020-11-09 2021-02-09 湖南龙智新材料科技有限公司 Copper bar locking structure of copper bar adding device for copper dissolving tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106015266A (en) * 2016-06-24 2016-10-12 天津雷沃动力有限公司 Looseness-prevention connecting structure with controllable pretightening force of engine cylinder head cover
CN112340598A (en) * 2020-11-09 2021-02-09 湖南龙智新材料科技有限公司 Copper bar locking structure of copper bar adding device for copper dissolving tank

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 300402 Beichen science and Technology Park, Beichen District, high tech Avenue, No. 77, No.

Patentee after: TIANJIN LOVOL ENGINES CO.,LTD.

Address before: 300402 Beichen science and Technology Park, Beichen District, high tech Avenue, No. 77, No.

Patentee before: TIANJIN LOVOL ENGINES Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170125

CF01 Termination of patent right due to non-payment of annual fee