CN201448137U - Actuating cylinder of exhaust brake valve of automobile engine and exhaust brake valve - Google Patents
Actuating cylinder of exhaust brake valve of automobile engine and exhaust brake valve Download PDFInfo
- Publication number
- CN201448137U CN201448137U CN2009200311185U CN200920031118U CN201448137U CN 201448137 U CN201448137 U CN 201448137U CN 2009200311185 U CN2009200311185 U CN 2009200311185U CN 200920031118 U CN200920031118 U CN 200920031118U CN 201448137 U CN201448137 U CN 201448137U
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- Prior art keywords
- exhaust brake
- cylinder
- brake valve
- limiting
- cylinder body
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- Expired - Fee Related
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The utility model discloses an actuating cylinder of an exhaust brake valve of an automobile engine and an exhaust brake valve. The actuating cylinder of the exhaust brake valve of the automobile engine comprises a cylinder body, a piston rod, a piston and a front end cover, wherein the cylinder body is provided with an air source inlet and internally provided with a front position-limiting sheath and a rear position-limiting sheath; the front position-limiting sheath is sheathed on the piston rod in a sliding way; the rear position-limiting sheath is connected with the front side of the piston; and the front position-limiting sheath is arranged between the front end cover and the rear position-limiting sheath. In the utility model, the actuating cylinder is internally provided with a position-limiting mechanism used for limiting the motion of the piston rod; the position-limiting mechanism can replace the external position-limiting plate of the existing exhaust brake valve, thus radically solving the problem that an external position-limiting plate is easy to be dislocated and the problem that the piston rod, the rocker arm, the ball joint and the bracket are easy to be bent or damaged due to excessively large force; therefore, firstly the reliability and durability of the part are ensured so as to ensure the reliability and durability of the exhaust brake operation; and secondly, the position-limiting of the internal position-limiting mechanism is exact and reliable.
Description
Technical field
The utility model relates to a kind of cylinder and a kind of valve, particularly a kind of manipulation cylinder of automobile engine to exhaust brake valve and a kind of exhaust braking valve.
Background technique
Current, the EVB exhaust braking valve that motor car engine is used, be to adopt the outer spacing position, stroke end of handling cylinder piston rod of controlling, and by pitman arm shaft is designed to torsion bar spring, realize when the back pressure of engine exhaust end reaches certain value, open valve, make its primary exhaust flow, do not make engine misses.There is following weak link in this structure: (one), owing to be outer spacing, must contact with the limiting board on the support when promptly handling the rocking arm work that the spherojoint of cylinder piston rod front end drives, can be spacing.When manipulation cylinder rated working pressure was 0.8Mpa, this moment, the active force at point of contact place was 1600N, was roughly equal to 163 kgfs.This active force to by 1. handling the 2. 3. force group zoarium formed of support of limiting board of cylinder, is in 163 kgfs and the effect work down of the moment that produces of power thus all the time; The vibration force that produces in the motor racing in addition is easy to cause: 1. rupture 2. spherojoint distortion or damage phenomenon such as 3. piston rod bending of support, thus make the exhaust brake defective valve.(2), limiting board is by being bolted on the support of two M8, must be gapped between the mounting hole of limiting board and the bolt of M8.When limiting board is subjected to will producing corresponding displacement under the effect 163 kgfs and the vibration force that automobile produces for a long time.This displacement will increase the pretightening force that torsion bar spring is closed valve block, if the stroke end of initial stage limiting board control, can guarantee to open the valve block exhaust during at 0.16～0.3Mpa when engine back pressure, when not stopping working with the assurance motor, owing to pretightening force increases, the back pressure of opening the engine exhaust end of valve block increases certainly after the displacement, even surpasses engine back pressure peak value 0.4Mpa, the valve block of also not opening, thus motor because of stopping working in exhaust.If automobile travels in the ramp, be danger close.
Summary of the invention
The technical problems to be solved in the utility model is: a kind of manipulation cylinder with automobile engine to exhaust brake valve of interior limit function is provided, and the outer spacing automobile engine to exhaust brake valve that do not have that a kind of reliability of exhaust brake work and good endurance are provided.
In order to solve the problems of the technologies described above, the manipulation cylinder of the utility model automobile engine to exhaust brake valve comprises cylinder body, piston rod, piston and front cover, cylinder body is provided with gas source inlet, be provided with front limit cover and back stop collar in the described cylinder body, the front limit cover slidably is enclosed within on the piston rod, back stop collar is connected with the front side of piston, and front limit is overlapped between front cover and back stop collar.
In order to improve the stability of back stop collar in limit piston motion process, described back stop collar and piston are integral structure.
Impact force when closing in order to slow down valve block and valve body, the front end of described back stop collar is provided with elastic component.
In order to prevent that ante-chamber from forming vacuum, causing piston motion to be obstructed, the gas source inlet of described cylinder body is arranged on the rear end of cylinder body, piston is provided with the one-way valve of unilaterally connected cylinder body back cavity and ante-chamber, and described front cover is provided with the one-way valve of unilaterally connected cylinder body ante-chamber and cylinder body outside.
The utility model automobile engine to exhaust brake valve comprises valve body, support, manipulation cylinder, rocking arm, torsion bar spring and valve block, and described manipulation cylinder is above-mentioned any one described manipulation cylinder.
The beneficial effects of the utility model are: the utility model is handled the position-limit mechanism that is provided with piston rod movement in the cylinder, and the outer limiting board on the alternative exhaust braking valve in the past of this position-limit mechanism has fundamentally solved outer limiting board and misplaced easily; The excessive flexible or problem damaged of piston rod, rocking arm, spherojoint and support force, the one, guarantee the reliability and the durability of part, thereby ensured the reliability and the durability of exhaust brake work.The 2nd, interior position-limit mechanism is spacing accurately, reliable.Not can because of outer when spacing the limiting board displacement change the pretightening force of torsion bar spring, and cause engine misses.This mechanism can ensure by starting back pressure to play braking action, be unlikely to make engine misses again.Effectively guaranteed the braking ability of car load.
Description of drawings
Fig. 1 is the utility model exhaust braking valve structural representation;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the utility model structural representation of air cylinder;
Among the figure: 1, valve body, 2, support, 3, handle cylinder, 4, piston rod, 5, rocking arm, 6, torsion bar spring, 7, valve block, 8, cylinder body, 9, piston, 10, the back stop collar, 11, elastic component, 12, the front limit cover, 13, front cover.
Embodiment
The manipulation cylinder of a kind of automobile engine to exhaust brake valve as shown in Figure 3, comprise cylinder body 8, piston rod 4, piston 9, back stop collar 10, elastic component 11, front limit cover 12 and front cover 13, piston 9, back stop collar 10, elastic component 11 and front limit cover 12 all are arranged in the cylinder body 8, front cover 13 is fixed on the front end of cylinder body 8, piston 9 is and back stop collar 10 integral structures, back stop collar 10 is positioned at the front side of piston 9, one end of piston rod 4 fixes with back stop collar 10, and the other end passes elastic component 11 successively, reach outside the cylinder body 8 behind front limit cover 12 and the front cover 13.Elastic component 11 is embedded in the stop collar 10 of back, and front limit cover 12 can slide on piston rod 4.The rear end of cylinder body 8 is provided with gas source inlet, and piston 9 is provided with the one-way valve of unilaterally connected cylinder body 8 back cavities and ante-chamber, thereby makes gas to enter ante-chamber from cylinder body 8 back cavities, and can not enter back cavity from ante-chamber.Front cover 13 is provided with the one-way valve of unilaterally connected cylinder body 8 ante-chambers and cylinder body outside, thereby makes gas to flow to outside the cylinder body from cylinder body 8 ante-chambers, and can not enter into ante-chamber outside cylinder body.
A kind of automobile engine to exhaust brake valve as shown in Figure 1 and Figure 2, comprise valve body 1, support 2, handle cylinder 3, piston rod 4, Rocker arm 5, torsion bar spring 6 and valve block 7, support 2 is fixed on the valve body 1, torsion bar spring 6 fixes with valve block 7, one end of torsion bar spring 6 is rotating to be arranged on the support 2; end of Rocker arm 5 is fixed on the torsion bar spring 6, and the rear end of handling cylinder 3 is hinged on the end of support 2, and the other end of Rocker arm 5 is hinged by spherojoint with the front end of the piston rod 4 of handling cylinder 3.It is 12 spacing that the limit stoper that does not have piston rod 4 motion on the support 2, the motion of piston rod 4 rely on back stop collar 10 in the cylinder body 8 and front limit to overlap.
When the pressurized air of rated working pressure, in gas source interface entered manipulation cylinder 3, pressurized air promoted piston 9 and piston rod 4 begins to move.When being embedded in the elastic component 11 of back in the stop collar when contacting with front limit cover 12, begin to reduce the motion speed of piston 9 and piston rod 4, thus the impact force that realization slows down valve block and valve body when closing.Elastic component 11 is compressed when handling cylinder 3 internal pressures continuation rising, makes front limit cover 12 contact the control that realizes manipulation cylinder stroke end with back stop collar 10.
Claims (5)
1. the manipulation cylinder of an automobile engine to exhaust brake valve, comprise cylinder body (8), piston rod (4), piston (9) and front cover (13), cylinder body (8) is provided with gas source inlet, it is characterized in that: be provided with front limit cover (12) and back stop collar (10) in the described cylinder body (8), front limit cover (12) slidably is enclosed within on the piston rod (4), back stop collar (10) is connected with the front side of piston (9), and front limit cover (12) is positioned between front cover (13) and the back stop collar (10).
2. the manipulation cylinder of automobile engine to exhaust brake valve according to claim 1 is characterized in that: described back stop collar (10) is an integral structure with piston (9).
3. the manipulation cylinder of automobile engine to exhaust brake valve according to claim 2 is characterized in that: the front end of described back stop collar (10) is provided with elastic component (11).
4. the manipulation cylinder of automobile engine to exhaust brake valve according to claim 1, it is characterized in that: the gas source inlet of described cylinder body (8) is arranged on the rear end of cylinder body (8), piston (9) is provided with the one-way valve of unilaterally connected cylinder body (8) back cavity and ante-chamber, and described front cover (13) is provided with the one-way valve of unilaterally connected cylinder body (8) ante-chamber and cylinder body outside.
5. one kind does not have outer spacing automobile engine to exhaust brake valve, comprise valve body (1), support (2), handle cylinder (3), rocking arm (5), torsion bar spring (6) and valve block (7), it is characterized in that: described manipulation cylinder (3) is any one described manipulation cylinder among the claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200311185U CN201448137U (en) | 2009-08-07 | 2009-08-07 | Actuating cylinder of exhaust brake valve of automobile engine and exhaust brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200311185U CN201448137U (en) | 2009-08-07 | 2009-08-07 | Actuating cylinder of exhaust brake valve of automobile engine and exhaust brake valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448137U true CN201448137U (en) | 2010-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200311185U Expired - Fee Related CN201448137U (en) | 2009-08-07 | 2009-08-07 | Actuating cylinder of exhaust brake valve of automobile engine and exhaust brake valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448137U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052159A (en) * | 2010-12-21 | 2011-05-11 | 芜湖盛力制动有限责任公司 | Waste gas braking butterfly valve of braking system for automobile and engineering machinery |
| CN107161131A (en) * | 2017-07-06 | 2017-09-15 | 浙江春风动力股份有限公司 | A kind of motor vehicle and its brake system |
| CN111911292A (en) * | 2020-08-18 | 2020-11-10 | 湖北力美制动元件有限公司 | Constant-pressure electromagnetic exhaust brake valve |
-
2009
- 2009-08-07 CN CN2009200311185U patent/CN201448137U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052159A (en) * | 2010-12-21 | 2011-05-11 | 芜湖盛力制动有限责任公司 | Waste gas braking butterfly valve of braking system for automobile and engineering machinery |
| CN107161131A (en) * | 2017-07-06 | 2017-09-15 | 浙江春风动力股份有限公司 | A kind of motor vehicle and its brake system |
| CN107161131B (en) * | 2017-07-06 | 2023-07-28 | 浙江春风动力股份有限公司 | Motor vehicle and braking system thereof |
| CN111911292A (en) * | 2020-08-18 | 2020-11-10 | 湖北力美制动元件有限公司 | Constant-pressure electromagnetic exhaust brake valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20120807 |