CN203442023U - Braking cylinder - Google Patents
Braking cylinder Download PDFInfo
- Publication number
- CN203442023U CN203442023U CN201320439631.4U CN201320439631U CN203442023U CN 203442023 U CN203442023 U CN 203442023U CN 201320439631 U CN201320439631 U CN 201320439631U CN 203442023 U CN203442023 U CN 203442023U
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- piston
- cylinder body
- valve
- cylinder
- valve pocket
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Abstract
The utility model discloses a braking cylinder. The braking cylinder comprises a cylinder body, wherein the head part of the cylinder body is provided with a gas inlet communicated with an inner cavity of the cylinder body; the cylinder body is internally provided with a piston and a piston rod which is connected with the piston and extends out of the tail part of the cylinder body; the tail part of the cylinder body is provided with a cover body for supporting the piston rod; a spring is arranged between the piston and the cover body; the piston is internally provided with a gas leakage channel for communicating a gas inlet cavity of the cylinder body and a front cavity of the cylinder body; the end surface of the piston, which faces to a gas inlet hole, is provided with a valve cavity communicated with the gas leakage channel; the valve cavity is internally provided with a valve seat in clearance fit with the side wall of the valve cavity; and a compression spring is arranged between the valve seat and the bottom surface of the valve cavity. The braking cylinder disclosed by the utility model has the advantages that false actions are avoided, so that normal operation of a diesel engine under the non-braking working condition can be guaranteed.
Description
Technical field
The utility model relates to diesel exhaust gas brake field, especially relates to a kind of brake cylinder.
Background technique
In diesel engines at present exhaust and brake system, normally by a brake cylinder, control the opening and closing of exhaust braking valve.Under non-damped condition, this brake valve is held open state, when needs exhaust brake, by pressurized air, promotes brake cylinder piston and closes this valve.
Chinese patent notice of authorization number: CN1421627, on June 4 2003 notice of authorization day, discloses a kind of brake cylinder ，Gai mechanism by the chimeric adjusting nut in bottom outlet that has that is supported in above-mentioned main piston rotatably; With the reversible driving ring coordinating of screw thread being arranged on this adjusting nut peripheral part; Be arranged at adjusting nut in the adjustment bolt of non-reversible support brake shoe one end coordinating of internal thread in perimembranous; Towards allowing the adjustment spring of pressuring direction of the peripheral part of above-mentioned driving ring and the opening portion clamping engagement of above-mentioned cylinder block form, above-mentioned adjusting nut is supported on having in bottom outlet of above-mentioned main piston by thrust-bearing.Its deficiency is, when diesel engine is during in non-damped condition, if a small amount of leakage while entering into brake cylinder occurs pressurized air, is easy to promote piston slippage, causes the misoperation of cylinder and has influence on the performance of diesel engine.
Model utility content
The utility model is, in order to overcome brake cylinder in prior art, the deficiency of misoperation easily occurs because a small amount of Leakage Gas enters, thereby a kind of brake cylinder that misoperation guarantees that diesel engine runs well under non-damped condition of avoiding occurring is provided.
To achieve these goals, the utility model is by the following technical solutions:
A kind of brake cylinder of the present utility model, comprise cylinder body, cylinder head is provided with the suction port being communicated with inner chamber of cylinder block, in cylinder body, be provided with piston and be connected with piston and stretch out the piston rod of cylinder body afterbody, the afterbody of cylinder body is provided with the lid of support piston bar, between piston and lid, be provided with spring, in described piston, be provided with and be communicated with cylinder body air-inlet cavity and the disappointing passage of cylinder body ante-chamber, described piston area is provided with to the end face of inlet hole the valve pocket being connected with the passage that loses heart, in described valve pocket, be provided with the valve seat coordinating with valve pocket sidewall spacers, between described valve seat and valve pocket bottom surface, be provided with Compress Spring.When a small amount of gas enters into cylinder body air-inlet cavity from suction port, gas can enter into cylinder body ante-chamber by the disappointing passage being communicated with valve pocket, and finally flows in outside atmosphere.Can avoid like this, because a small amount of Leakage Gas enters into brake cylinder, misoperation occurs, the reliability of brake cylinder is waited until larger raising, guarantees that diesel engine runs well under non-damped condition.
As preferably, described valve pocket position is corresponding with suction port position, and described disappointing passage comprises the axial passage being communicated with valve pocket and the radial passage being communicated with axial passage.Lose heart like this passage processing more for convenience, valve pocket position is corresponding with suction port, gas mobile comparatively unobstructed, to guarantee that gas discharges sooner.
As preferably, the interior edge face of described valve seat is provided with to the outstanding bulge loop in valve pocket bottom, and described bulge loop is provided with gum cover.When diesel engine enters into exhaust brake condition, pressurized air enters in cylinder with larger pressure, now valve seat is because gas pressure effect is to valve pocket basal sliding, and the gum cover on bulge loop has further improved the sealing of valve seat and valve pocket bottom surface, guarantees that gas can not revealed when exhaust brake.
As preferably, the top of described valve pocket sidewall is provided with filter core.Filter core can prevent that dust impurity etc. from entering in the space between valve pocket and valve seat and stop up, and guarantees that gas reliably flow into lose heart in passage, guarantees the flexibility that valve seat slides in valve pocket simultaneously.
As preferably, described lid comprises gland and for the protecgulum of retaining spring, between protecgulum and gland, is provided with one-way valve, and described protecgulum is provided with the vent being connected with the valve opening of one-way valve, and the outer end of described one-way valve is provided with rubber sheet gasket.Can guarantee that like this gas in cylinder body ante-chamber enters into ambient atmosphere swimmingly, prevent that in addition extraneous dust from entering into cylinder interior, plays good dustproof effect.
As preferably, the side of described valve seat is provided with along the uniform groove of circumferencial direction.By the design of groove, improved the sensitivity of valve seat, be conducive to fast a small amount of gas be discharged.
Therefore, the utlity model has following beneficial effect: (1) efficiently solves and enters the problem that brake cylinder causes misoperation because of a small amount of Leakage Gas; (2) simple in structure, easily manufactured, safe and reliable during operation.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the structural representation of valve seat in the utility model;
Fig. 3 is the side view of valve seat in the utility model.
In figure, piston 1, special-shaped O makes 2, valve seat 3, Compress Spring 4, cylinder body 5, spring 6, protecgulum 7, slide bushing 8, gland 9, rubber sheet gasket 10, one-way valve 11, piston rod 12, the passage 13 that loses heart, valve pocket 14, wear ring 15, filter core 16, suction port 17, gum cover 18, groove 19.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
In embodiment as shown in Figure 1, a kind of brake cylinder, comprises cylinder body 5, and cylinder head is provided with suction port 17, and this suction port is communicated with cylinder body air-inlet cavity.In cylinder body, be provided with piston 1 and piston rod 12, wherein piston rod is connected with piston and stretches out cylinder body afterbody.The afterbody of cylinder body is provided with the lid of support piston bar, is provided with spring 6 between piston and lid.Lid comprises gland 9 and for the protecgulum 7 of retaining spring, is provided with one-way valve 11 between protecgulum and gland, and protecgulum is provided with the vent being connected with the valve opening of one-way valve, and the outer end of one-way valve is provided with rubber sheet gasket 10, to prevent that the magazines such as dust from entering.In piston, be provided with and be communicated with cylinder body air-inlet cavity and the disappointing passage 13 of cylinder body ante-chamber, piston area is provided with to the end face of inlet hole the valve pocket 14 being connected with the passage that loses heart, valve pocket position is corresponding with suction port position, in valve pocket, be provided with the valve seat 3 coordinating with valve pocket sidewall spacers, between valve seat and valve pocket bottom surface, be provided with Compress Spring 4.Shown in Fig. 3, the side of valve seat is provided with along the uniform groove 19 of circumferencial direction, and the passage that loses heart is comprised of axial passage and radial passage, and wherein one end of axial passage is communicated with valve pocket, and the other end is communicated with radial passage.Shown in Fig. 2, the interior edge face of valve seat is provided with to the outstanding bulge loop in valve pocket bottom, and valve seat surface is provided with gum cover 18 to one end of valve pocket bottom surface.The top of valve pocket sidewall is provided with filter core 16, to play the effect of filtering dust impurity.In addition, on piston, be also provided with special-shaped O and make 2 and wear ring 15, to improve the sealing of piston, extend piston life.Between protecgulum and piston rod, be also provided with slide bushing 8, the moving direction of piston rod is played to leading role.
When actual motion, when having a small amount of gas leakage to enter into air-inlet cavity from suction port, because the pressure of gas leakage is little, therefore Compress Spring can be not compressed, gas can enter in cylinder body ante-chamber through the passage that loses heart by the gap between valve seat and valve pocket sidewall, then through the one-way valve of afterbody, discharge, now piston and piston rod do not move; When diesel engine enters exhaust brake condition, pressurized air enters into air-inlet cavity with larger pressure, now the gap between valve seat and valve pocket cannot be discharged a large amount of pressurized gas, gas directly promotes valve seat and makes Compress Spring compressive strain, the bulge loop of valve seat and valve pocket bottom surface compress, gas cannot enter in the passage that loses heart, so gas acts on piston end surface, makes piston and piston rod action.
Claims (6)
1. a brake cylinder, comprise cylinder body (5), cylinder head is provided with the suction port (17) being communicated with inner chamber of cylinder block, in cylinder body (5), be provided with piston (1) and be connected with piston (1) and stretch out the piston rod (12) of cylinder body (5) afterbody, the afterbody of cylinder body (5) is provided with the lid of support piston bar (12), between piston (1) and lid, be provided with spring (6), it is characterized in that, in described piston (1), be provided with and be communicated with cylinder body air-inlet cavity and the disappointing passage (13) of cylinder body ante-chamber, described piston (1) is provided with towards the end face of inlet hole the valve pocket (14) being connected with the passage that loses heart (13), in described valve pocket (14), be provided with the valve seat (3) coordinating with valve pocket (14) sidewall spacers, between described valve seat (3) and valve pocket (14) bottom surface, be provided with Compress Spring (4).
2. a kind of brake cylinder according to claim 1, it is characterized in that, described valve pocket (14) position is corresponding with suction port (17) position, and described disappointing passage (13) comprises the axial passage being communicated with valve pocket (14) and the radial passage being communicated with axial passage.
3. a kind of brake cylinder according to claim 1, is characterized in that, the interior edge face of described valve seat (3) is provided with to the outstanding bulge loop in valve pocket (14) bottom, and described bulge loop is provided with gum cover (18).
4. according to a kind of brake cylinder described in claim 1 or 2 or 3, it is characterized in that, the top of described valve pocket (14) sidewall is provided with filter core (16).
5. according to a kind of brake cylinder described in claim 1 or 2 or 3, it is characterized in that, described lid comprises gland (9) and for the protecgulum (7) of retaining spring (6), between protecgulum (7) and gland (9), be provided with one-way valve (11), described protecgulum (7) is provided with the vent being connected with the valve opening of one-way valve (11), and the outer end of described one-way valve (11) is provided with rubber sheet gasket (10).
6. according to a kind of brake cylinder described in claim 1 or 2 or 3, it is characterized in that, the side of described valve seat (3) is provided with along the uniform groove of circumferencial direction (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439631.4U CN203442023U (en) | 2013-07-23 | 2013-07-23 | Braking cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439631.4U CN203442023U (en) | 2013-07-23 | 2013-07-23 | Braking cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203442023U true CN203442023U (en) | 2014-02-19 |
Family
ID=50093081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320439631.4U Expired - Lifetime CN203442023U (en) | 2013-07-23 | 2013-07-23 | Braking cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203442023U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047979A (en) * | 2014-06-20 | 2014-09-17 | 王沛超 | Improved automobile brake oil cylinder |
| CN106884912A (en) * | 2017-03-08 | 2017-06-23 | 广西柳工机械股份有限公司 | Engineering machinery brake chamber |
| CN108119675A (en) * | 2018-02-22 | 2018-06-05 | 济南百惠凯希汽车零部件有限公司 | A kind of check valve and the auxiliary braking cylinder using the check valve |
-
2013
- 2013-07-23 CN CN201320439631.4U patent/CN203442023U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047979A (en) * | 2014-06-20 | 2014-09-17 | 王沛超 | Improved automobile brake oil cylinder |
| CN104047979B (en) * | 2014-06-20 | 2016-06-01 | 王沛超 | The braking automobile oil cylinder improved |
| CN106884912A (en) * | 2017-03-08 | 2017-06-23 | 广西柳工机械股份有限公司 | Engineering machinery brake chamber |
| CN108119675A (en) * | 2018-02-22 | 2018-06-05 | 济南百惠凯希汽车零部件有限公司 | A kind of check valve and the auxiliary braking cylinder using the check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
|
| CX01 | Expiry of patent term |