CN203796350U - Return and limit spring mechanism for brake rocker arm of engine - Google Patents
Return and limit spring mechanism for brake rocker arm of engine Download PDFInfo
- Publication number
- CN203796350U CN203796350U CN201420064454.0U CN201420064454U CN203796350U CN 203796350 U CN203796350 U CN 203796350U CN 201420064454 U CN201420064454 U CN 201420064454U CN 203796350 U CN203796350 U CN 203796350U
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- CN
- China
- Prior art keywords
- rocker arm
- brake rocker
- pressing plate
- spring
- engine
- 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
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- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Provided is a return and limit spring mechanism for a brake rocker arm of an engine. A screw (1) penetrates through a pressing plate screw hole (12) and is in threaded connection with a conical cushion block (4) which is fixed on the lower portion of a bridge-shaped pressing plate (3), one end of a spring (6) is located o the conical cushion block (4), the other end of the spring (6) is located on a conical surface spacer (7) which is located on an installation plane above the brake rocker arm (8), the two ends of the bridge-shaped pressing plate (3) are respectively provided with a hexagonal head bolt (2), and the hexagonal head bolts (2) penetrate through the bridge-shaped pressing plate (3), sleeve pins (5) in sequence to be fixedly installed on an installation plane above a cam shaft cover (10). By the adoption of the spring mechanism, it is guaranteed that the brake rocker arm (8) makes contact with a driving part of a cam shaft (11) stably all the time under the action of elastic force of the spring (6) in the running process of the cam shaft (11), and a guarantee is provided for normal operation of an engine speed reducer.
Description
Technical field
The utility model relates to overhead camshaft four stroke engine retarder device.
Background technique
At present, along with Safety regulations improves constantly, more and more stricter to the requirement of car brakeing aspect, the slowing down speed of engine of a kind of auxiliary device slowing down as car brakeing arises at the historic moment.Slowing down speed of engine is often by an independent or compound rocking arm formation brake rocker arm, and in engine operation process, brake rocker arm is installed on pitman arm shaft and with camshaft and turns round together with intake rocker, exhaust rocker arm.In the time that vehicle needs braking deceleration, slowing down speed of engine can stretch out the brake piston of retarder and oppress exhaust valve to make it open certain throttle opening by electronic control or hydraulic control, the back pressure of utilizing the pressurized gas of the four-stroke compression of motor and exhaust stroke to discharge, absorb vehicle operation energy, produce braking effect.When normal vehicle operation, slowing down speed of engine is not worked, and brake piston and exhaust valve have a certain amount of design gaps, avoids the throttle opening of exhaust valve.Therefore,, in the time that slowing down speed of engine is not worked, although brake rocker arm and exhaust valve exist the reasonable clearance of design, for to avoid the unreasonable swing of brake rocker arm to rock, must ensure that brake rocker arm is in operating condition stably.
Summary of the invention
The purpose of this utility model is to provide a kind of brake rocker arm of engine return limit spring mechanism, uses this structure, can ensure slowing down speed of engine not work schedule shake arm in smooth operation state, avoid unnecessary collision even to wear and tear.
The utility model is achieved in that a kind of brake rocker arm of engine return limit spring mechanism, screw is threaded with taper cushion block through pressing plate screw, taper cushion block is fixed on the below of bridge shape pressing plate, spring one end is located on taper cushion block, the other end is located on conical surface pad, conical surface pad is positioned on the mounting plane of brake rocker arm top, and respectively there is a hexagon head bolt at the two ends of bridge shape pressing plate, is fixedly installed on the mounting plane of camshaft cover top successively through bridge shape pressing plate, sleeve pin.
Above-mentioned a kind of brake rocker arm of engine return limit spring mechanism, is interference fit between described spring one end inner circle and taper cushion block, between the other end inner circle and conical surface pad, is Spielpassung.
Above-mentioned a kind of brake rocker arm of engine return limit spring mechanism, described conical surface pad is fixedly welded on brake rocker arm.
The utility model has ensured in camshaft running, brake rocker arm is due under the effect of spring force, remaining stable with camshaft actuated part contacts, make brake rocker arm stable working state reliable, avoided the unreasonable swing of brake rocker arm to rock, for the normal work of slowing down speed of engine provides guarantee simultaneously.
Brief description of the drawings
Fig. 1 is the part exploded perspective schematic diagram of this mechanism.
Fig. 2 is the three-dimensional scheme of installation of this mechanism.
In figure: 1 is screw, 2 is hexagon head bolt, and 3 is bridge shape pressing plate, and 4 is taper cushion block, and 5 is sleeve pin, and 6 is spring, and 7 is conical surface pad, and 8 is brake rocker arm, and 9 is pitman arm shaft, and 10 is camshaft cover, and 11 is camshaft, and 12 is pressing plate screw.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As accompanying drawing 1, shown in 2, one brake rocker arm of engine return limit spring mechanism, brake rocker arm 8 is installed on pitman arm shaft 9, turn round with camshaft 11, screw 1 is threaded with taper cushion block 4 through pressing plate screw 12, taper cushion block 4 is fixed on the below of bridge shape pressing plate 3, spring 6 one end are located on taper cushion block 4, the other end is located on conical surface pad 7, conical surface pad 7 is positioned on the mounting plane of brake rocker arm 8 tops, respectively there is a hexagon head bolt 2 at the two ends of bridge shape pressing plate 3, successively through bridge shape pressing plate 3, sleeve pin 5 is fixedly installed on the mounting plane of camshaft cover 10 tops.Between spring 6 one end inner circles and taper cushion block 4, be a certain amount of interference fit, make spring 6 under installment state, produce appropriate spring radial force, the transverse shakiness that can prevent spring 6 even comes off, convenient installation, and the other end of spring 6 is located in and is pressed on conical surface pad 7, between conical surface pad 7 and spring 6 inner circles, be a certain amount of Spielpassung, it is even more ideal that Spielpassung can make spring 6 and conical surface pad 7 coordinate, because can avoid to a certain extent movement process medi-spring 6 to compress unstability because the mismatch error at center, two ends causes spring 6.Conical surface pad 7 is by being fixedly welded on brake rocker arm 8.
The utility model has ensured in camshaft running, brake rocker arm 8 contacts because remaining stable with camshaft 11 actuators under the elastic force in spring 6 always, make brake rocker arm 8 operating conditions stable, avoided the unreasonable swing of brake rocker arm 8 to rock simultaneously, even with the phenomenon of colliding with of other assemblies, for the normal work of slowing down speed of engine provides guarantee.
Claims (3)
1. a brake rocker arm of engine return limit spring mechanism, it is characterized in that screw (1) is threaded with taper cushion block (4) through pressing plate screw (12), taper cushion block (4) is fixed on the below of bridge shape pressing plate (3), spring (6) one end is located on taper cushion block (4), the other end is located on conical surface pad (7), conical surface pad (7) is positioned on the mounting plane of brake rocker arm (8) top, respectively there is a hexagon head bolt (2) at the two ends of bridge shape pressing plate (3), successively through bridge shape pressing plate (3), sleeve pin (5) is fixedly installed on the mounting plane of camshaft cover (10) top.
2. a kind of brake rocker arm of engine return limit spring according to claim 1 mechanism, it is characterized in that described spring (6) one end inner circle and and taper cushion block (4) between for interference fit, between the other end inner circle and conical surface pad (7), be Spielpassung.
3. according to a kind of brake rocker arm of engine return limit spring mechanism described in claim 1 or 2, it is characterized in that described conical surface pad (7) is fixedly welded on brake rocker arm (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064454.0U CN203796350U (en) | 2014-02-13 | 2014-02-13 | Return and limit spring mechanism for brake rocker arm of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064454.0U CN203796350U (en) | 2014-02-13 | 2014-02-13 | Return and limit spring mechanism for brake rocker arm of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796350U true CN203796350U (en) | 2014-08-27 |
Family
ID=51378570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064454.0U Expired - Fee Related CN203796350U (en) | 2014-02-13 | 2014-02-13 | Return and limit spring mechanism for brake rocker arm of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10526926B2 (en) | 2015-05-18 | 2020-01-07 | Eaton Srl | Rocker arm having oil release valve that operates as an accumulator |
-
2014
- 2014-02-13 CN CN201420064454.0U patent/CN203796350U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10526926B2 (en) | 2015-05-18 | 2020-01-07 | Eaton Srl | Rocker arm having oil release valve that operates as an accumulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Zan Inventor after: Han Jie Inventor after: Deng Mei Inventor after: Yu Yang Inventor after: Fu Xingsheng Inventor after: Wei Wei Inventor before: Wang Zan Inventor before: Han Jie Inventor before: Deng Mei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG ZAN HAN JIE DENG MEI TO: WANG ZAN HAN JIE DENG MEI YU YANG FU XINGSHENG WEI WEI |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20210213 |