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 PDFInfo
- 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
Links
- 238000000034 method Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract 1
- 235000011613 Pinus brutia Nutrition 0.000 abstract 1
- 241000018646 Pinus brutia Species 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
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
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.
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 |
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CN205908609U true CN205908609U (en) | 2017-01-25 |
Family
ID=57812641
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)
Country | Link |
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CN (1) | CN205908609U (en) |
Cited By (2)
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 |
-
2016
- 2016-06-24 CN CN201620662393.7U patent/CN205908609U/en not_active Expired - Fee Related
Cited By (2)
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 |