CN105857287B - A kind of railway brake valve limiting mechanism of pressure - Google Patents
A kind of railway brake valve limiting mechanism of pressure Download PDFInfo
- Publication number
- CN105857287B CN105857287B CN201610372799.6A CN201610372799A CN105857287B CN 105857287 B CN105857287 B CN 105857287B CN 201610372799 A CN201610372799 A CN 201610372799A CN 105857287 B CN105857287 B CN 105857287B
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- Prior art keywords
- valve
- piston
- wall
- valve body
- upper chamber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/021—Railway control or brake valves
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of railway brake valve limiting mechanism of pressure, including valve body, separation inner wall is provided in the valve body, valve inner is divided into mutually closed upper chamber and lower chambers by the inner wall that separates, piston is provided in the upper chamber, upper chamber is divided into mutually closed piston upper chamber and piston cavity of resorption by the piston, the bottom chamber is provided with spring base, spring is provided between the spring base and valve body inner bottom surface, the valve of guide is provided on the spring base, the guide rod upper end, which passes through, to be separated inner wall and connect with piston, the input port being connected to lower chambers and delivery outlet are provided on the valve body, and the atmosphere entry being connected to piston cavity of resorption, the piston upper chamber is connected to delivery outlet, valve port is provided at the input port, the valve and valve port corresponding matching control input port Opening and closing.The pressure for the high pressure gas that input port enters can be reduced to set value by the present invention, and be exported from delivery outlet.
Description
Technical field
The invention belongs to rolling stock technical field, in particular to a kind of railway brake valve limiting mechanism of pressure.
Background technique
In railway brake valve product, the limitation to gas pressure intensity is most basic requirement, it is therefore desirable to which structure is simple, controls
Make accurate, high reliablity limiting mechanism of pressure.
Summary of the invention
It is an object of the invention to: in view of the above problems, the pressure of high pressure gas can be limited by providing one kind
To desirable value and the railway brake valve limiting mechanism of pressure of output.
The technical scheme of the present invention is realized as follows: a kind of railway brake valve limiting mechanism of pressure, including valve body, feature
It is: is provided with separation inner wall in the valve body, valve inner is divided into mutually closed upper chamber by the inner wall that separates
And lower chambers, be provided with piston in the upper chamber, the piston by upper chamber be divided into mutually closed piston upper chamber and
Piston cavity of resorption is provided with spring base in the bottom chamber, is provided with spring between the spring base and valve body inner bottom surface,
The valve of guide is provided on the spring base, the guide rod upper end, which passes through, to be separated inner wall and connect with piston, described
The input port being connected to lower chambers and delivery outlet, and the atmosphere entry being connected to piston cavity of resorption, the work are provided on valve body
Chamber is connected to delivery outlet beyond the Great Wall, and valve port is provided at the input port, and the valve and valve port corresponding matching control input port
Opening and closing.
Railway brake valve limiting mechanism of pressure of the present invention is provided with annular groove in the piston outer periphery, in the ring
Be provided with sealing ring A in slot, between piston and valve interior wall, passed through in the guide rod separate at inner wall, guide rod and separation
Sealing ring B is provided between inner wall.
Railway brake valve limiting mechanism of pressure of the present invention, in the valve lower end surface, setting is fluted, described recessed
The rubber with valve port corresponding matching is provided in slot.
The present invention passes through the mutual limitation of each chamber pressure of valve inner, the pressure for the high pressure gas that can enter input port
It is reduced to set value by force, and is exported from delivery outlet, to guarantee that delivery outlet pressure is preset pressure value.Structure of the invention letter
List controls accurate and high reliablity.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention in open state.
Fig. 2 be the present invention in off position when structural schematic diagram.
Marked in the figure: 1 is valve body, 1a is upper chamber, and 1b is lower chambers, and 2 is separate inner wall, and 3 be piston, and 3a is on piston
Chamber, 3b are piston cavity of resorption, and 4 be spring base, and 5 be spring, and 6 be guide rod, and 7 be valve, and 8 be input port, and 9 be delivery outlet, and 10 be logical
Atmospheric air port, 11 be valve port, and 12 be sealing ring A, and 13 be sealing ring B, and 14 be rubber.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, a kind of railway brake valve limiting mechanism of pressure, including valve body 1, separation is provided in the valve body 1
Inner wall 2, the inner wall 2 that separates will be divided into mutually closed upper chamber 1a and lower chambers 1b inside valve body 1, in the upper chamber
It is provided with piston 3 in 1a, 3 periphery of piston is provided with annular groove, is set in the annular groove, between 1 inner wall of piston 3 and valve body
It is equipped with sealing ring A12, upper chamber 1a is divided into mutually closed piston upper chamber 3a and piston cavity of resorption 3b by the piston 3, in institute
It states and is provided with spring base 4 in lower chambers 1b, spring 5 is provided between 1 inner bottom surface of the spring base 4 and valve body, in the bullet
The valve 7 of guide 6 is provided on spring abutment 4,6 upper end of guide rod, which passes through, to be separated inner wall 2 and connect with piston 3, described
Guide rod 6 is set on the valve body 1 across separating at inner wall 2, being provided with sealing ring B13 guide rod 6 and separation inner wall 2
It is equipped with the input port 8 being connected to lower chambers 1b and delivery outlet 9, and the atmosphere entry 10 being connected to piston cavity of resorption 3b, the work
Chamber 3a is connected to delivery outlet 9 beyond the Great Wall, is provided with valve port 11 at the input port 8, and in 7 lower end surface of valve, setting is fluted,
It is provided with the rubber 14 with 11 corresponding matching of valve port in the groove, the opening and closing of input port 8 is controlled by valve 7.
The working principle of the invention is:
(a) open state
As shown in Figure 1, due to the effect of spring force, valve is made to leave the valve port of valve body lower end in the original state of work,
The access between input port and delivery outlet is in open state at this time, and the compressed air entered from input port can be entered by this access
Delivery outlet, while also entering piston upper chamber.With the continuous rising of input port pressure, compressed air pushes piston gradually to move down,
Valve is pushed constantly to move down therewith, the rubber face of valve constantly reduces at a distance from valve body lower end valve port.When input port pressure is less than in advance
If when voltage limiting value (voltage limiting value is determined by spring parameter), compressed air, which can not be such that piston is displaced downwardly to, can close input port to output
The access of mouth, i.e., can not be such that the rubber face of valve contacts with the valve port of valve body lower end, limiting mechanism of pressure has been at open state at this time.
(b) closed state
As shown in Fig. 2, as the compressed air entered from input port constantly enters delivery outlet, compressed air push piston by
It gradually moves down, pushes valve constantly to move down therewith, the rubber face of valve is contracted to 0 at a distance from valve body lower end valve port, has cut off input port
Air flue between delivery outlet, the compressed air of input port cannot be introduced into delivery outlet, therefore the compressed air pressure of delivery outlet
Default voltage limiting value is remained, does not continue to rise, limiting mechanism of pressure is in close state.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (3)
1. a kind of railway brake valve limiting mechanism of pressure, including valve body (1), it is characterised in that: be provided in the valve body (1) point
Every inner wall (2), separate inner wall (2) will be divided into mutually closed upper chamber (1a) and lower chambers (1b) inside valve body (1),
It is provided with piston (3) in the upper chamber (1a), upper chamber (1a) is divided on mutually closed piston by the piston (3)
Chamber (3a) and piston cavity of resorption (3b) are provided with spring base (4) in the lower chambers (1b), in the spring base (4) and valve body
(1) it is provided with spring (5) between inner bottom surface, the valve (7) of guide (6), the guiding are provided on the spring base (4)
Bar (6) upper end, which passes through, to be separated inner wall (2) and connect with piston (3), is provided on the valve body (1) and is connected to lower chambers (1b)
Input port (8) and delivery outlet (9), and the atmosphere entry (10) being connected to piston cavity of resorption (3b), the piston upper chamber (3a)
It is connected to, is provided at the input port (8) valve port (11) with delivery outlet (9), the valve (7) and valve port (11) corresponding matching control
The opening and closing of input port (8) processed.
2. railway brake valve limiting mechanism of pressure according to claim 1, it is characterised in that: set in the piston (3) periphery
It is equipped with annular groove, is being provided with sealing ring A(12 in the annular groove, between piston (3) and valve body (1) inner wall), in the guide rod
(6) sealing ring B(13 is provided at separation inner wall (2), guide rod (6) and separation inner wall (2)).
3. railway brake valve limiting mechanism of pressure according to claim 1 or 2, it is characterised in that: in the valve (7) lower end surface
Be arranged it is fluted, be provided in the groove with the rubber (14) of valve port (11) corresponding matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372799.6A CN105857287B (en) | 2016-05-31 | 2016-05-31 | A kind of railway brake valve limiting mechanism of pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372799.6A CN105857287B (en) | 2016-05-31 | 2016-05-31 | A kind of railway brake valve limiting mechanism of pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105857287A CN105857287A (en) | 2016-08-17 |
| CN105857287B true CN105857287B (en) | 2019-01-08 |
Family
ID=56642893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610372799.6A Active CN105857287B (en) | 2016-05-31 | 2016-05-31 | A kind of railway brake valve limiting mechanism of pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105857287B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1608911A (en) * | 2003-10-18 | 2005-04-27 | 霍尔德克斯制动产品有限公司 | A modulator |
| WO2011151645A1 (en) * | 2010-06-02 | 2011-12-08 | Haldex Brake Products Limited | Valve assembly |
| CN104781114A (en) * | 2012-09-12 | 2015-07-15 | 克诺尔-布里姆斯轨道车辆系统有限公司 | Pressure control valve with integrated pressure compensation function and check valve function |
| CN105156728A (en) * | 2015-10-14 | 2015-12-16 | 四川制动科技股份有限公司 | Pressure regulating mechanism |
| CN205632473U (en) * | 2016-05-31 | 2016-10-12 | 眉山中车制动科技股份有限公司 | Railway is voltage limiting mechanism for brake valve |
-
2016
- 2016-05-31 CN CN201610372799.6A patent/CN105857287B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1608911A (en) * | 2003-10-18 | 2005-04-27 | 霍尔德克斯制动产品有限公司 | A modulator |
| WO2011151645A1 (en) * | 2010-06-02 | 2011-12-08 | Haldex Brake Products Limited | Valve assembly |
| CN104781114A (en) * | 2012-09-12 | 2015-07-15 | 克诺尔-布里姆斯轨道车辆系统有限公司 | Pressure control valve with integrated pressure compensation function and check valve function |
| CN105156728A (en) * | 2015-10-14 | 2015-12-16 | 四川制动科技股份有限公司 | Pressure regulating mechanism |
| CN205632473U (en) * | 2016-05-31 | 2016-10-12 | 眉山中车制动科技股份有限公司 | Railway is voltage limiting mechanism for brake valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105857287A (en) | 2016-08-17 |
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