CN204110020U - Differential type relay valve - Google Patents
Differential type relay valve Download PDFInfo
- Publication number
- CN204110020U CN204110020U CN201420442684.6U CN201420442684U CN204110020U CN 204110020 U CN204110020 U CN 204110020U CN 201420442684 U CN201420442684 U CN 201420442684U CN 204110020 U CN204110020 U CN 204110020U
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- valve
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- relay
- differential type
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model belongs to service brake valve technology field, especially relates to a kind of differential type relay valve.This differential type relay valve, comprise valve body, laterally division board is provided with in the middle part of valve body, piston mouth is had in the middle part of division board, the valve piston that can move axially is provided with in piston mouth, both sides, valve body top have hand valve interface and main valve interface, piston channel is provided with between hand valve interface and main valve interface, piston channel is sealedly connected with the upper piston that can move axially, relay piston is provided with between upper piston and valve piston, drain tap is provided with between valve piston and relay piston, it is characterized in that, valve body lower portion side has air receiver interface and compressed air brake cylinder interface, body base is provided with lower cover, air intake valve is provided with between lower cover and valve piston, be connected by gas transmission chamber between air receiver interface and compressed air brake cylinder interface, gas transmission chamber and compressed air brake cylinder interface separate by air intake valve, valve piston is socketed with valve return spring air intake valve to upwards predetermincd tension.
Description
Technical field
The utility model belongs to service brake valve technology field, especially relates to a kind of differential type relay valve.
Background technology
Relay valve admission port connects air receiver, and air extractor duct connects compressed air brake cylinder.When stepping on brake pedal, the output pressure of brake activation valve inputs as the control presssure of relay valve, under control presssure effect, air inlet valve is pushed open, so pressurized air just directly enters compressed air brake cylinder by admission port by air receiver, and brake activation valve need not be flowed through, this substantially reduces the loading line of compressed air brake cylinder, accelerates the gas replenishment process of air chamber.In prior art, the intake and exhaust time of relay valve to compressed air brake cylinder is long, and braking is slow, and safety is low, easily leaks gas, and the airshed of main valve is large, and poor stability, does not have the function preventing double brake.
In order to improve prior art, people have carried out long-term exploration, propose various solution.Such as, Chinese patent literature discloses a kind of differential relay valve [application number: CN201010600311.3] of heavy-duty truck brake system, comprise upper shell, lower house and the admission port be located on lower house and air extractor duct, it is characterized in that: described upper shell is established control gas port, the below of described lower house is established exhaust cap assembly and is fastenedly connected with described lower house, and described exhaust cap assembly establishes exhausr port; Control plunger and relay piston is established in described upper shell; Valve frame assembly is established in described lower house; Described relay piston contacts with described valve frame assembly; Spool on described valve frame assembly coordinates with the valve port leading to described exhausr port.
Although such scheme to some extent solves the deficiencies in the prior art, can fold, have and prevent double brake, long to the intake and exhaust time of compressed air brake cylinder, braking is slow, and safety is low, easily leaks gas, and the airshed of main valve is large, poor stability.
Summary of the invention
The purpose of this utility model is for the problems referred to above, and provide a kind of reasonable in design, structure is simple, is beneficial to the differential type relay valve improving retro-speed.
For achieving the above object, the utility model have employed following technical proposal: this differential type relay valve, comprise valve body, laterally division board is provided with in the middle part of described valve body, piston mouth is had in the middle part of described division board, the valve piston that can move axially is provided with in described piston mouth, described both sides, valve body top have hand valve interface and main valve interface, piston channel is provided with between described hand valve interface and main valve interface, described piston channel is sealedly connected with the upper piston that can move axially, relay piston is provided with between described upper piston and valve piston, drain tap is provided with between described valve piston and relay piston, it is characterized in that, described valve body lower portion side has air receiver interface and compressed air brake cylinder interface, described body base is provided with lower cover, air intake valve is provided with between described lower cover and valve piston, be connected by gas transmission chamber between described air receiver interface and compressed air brake cylinder interface, gas transmission chamber and compressed air brake cylinder interface separate by described air intake valve, described valve piston is socketed with valve return spring air intake valve to upwards predetermincd tension.
During braking, described relay piston moves down, contact with valve piston, drain tap is closed, the predetermincd tension that valve piston overcomes valve return spring constantly moves down, air intake valve is opened drain tap and is closed, the air receiver interface of tradition relay valve and compressed air brake cylinder interface are symmetricly set on the both sides of relay valve body respectively, air receiver interface and the compressed air brake cylinder interface of this differential type relay valve are arranged on the same side, gas transmission chamber is except air intake valve place, remainder is all closed, air receiver interface is connected with gas transmission chamber, after air intake valve is opened, gas transmission chamber is connected with compressed air brake cylinder interface, pressure gas directly enters into compressed air brake cylinder interface from air receiver interface through gas transmission chamber, shorten the length of compressed air conveying pipeline, indirectly shorten intake period, in addition, traditional relay valve needs to pass twice through intake valve port, this differential type relay valve only needs once by intake valve port, shorten the time of pressurized air by intake valve port, namely intake period is shortened, improve retro-speed.
In above-mentioned differential type relay valve, described upper piston have for the relay piston sliding chamber of piston in axial sliding, form the first chamber between described relay piston and main valve interface wall, described main valve interface wall has the first admission port being communicated with main valve interface and the first chamber.Upper piston and relay piston can independent slide separately, from the pressurized air of main valve interface input, enter into the first chamber by the first admission port, directly promotion relay piston slide downward.
In above-mentioned differential type relay valve, form the second chamber between described upper piston and hand valve interface wall, described hand valve interface wall has the second admission port being communicated with hand valve interface and the second chamber.The pressurized air inputted from hand valve interface, enters into the second chamber by the second admission port, promotes upper piston slide downward, indirectly drives relay piston slide downward.
In above-mentioned differential type relay valve, described upper piston and relay piston are all tightly connected with valve interior wall.O RunddichtringO is adopted to seal, good airproof performance.
In above-mentioned differential type relay valve, cover under described and have exhausr port, described exhausr port two end axles is to upwards extending to form cylindrical body, described cylindrical body level extends internally to be formed and can stop that valve return spring shaft is to upwards flexible block body, is provided with the spring perch be fixed on valve piston between described block body and valve return spring.Described cylindrical body inwall removes the air intake valve place equal valve piston of remainder and is tightly connected, during braking, the predetermincd tension that valve piston overcomes valve return spring moves down, drain tap is closed air intake valve and is opened, during brake off, the gas input in compressed air brake cylinder, promotes relay piston and moves up, valve piston moves up under the effect of valve return spring, and air intake valve is closed drain tap and opened.
In above-mentioned differential type relay valve, described valve piston has the exhaust passage being communicated with compressed air brake cylinder interface and exhausr port, described exhausr port is provided with cover of dust and cover of dust and exhausr port sidewall are tightly connected, and described cylindrical body, valve piston and cover of dust form gas transmission chamber.Pressurized air enters into exhaust passage by exhaust valve port, then by exhausr port exits valve body.
Compared with prior art, the advantage of this differential type relay valve is: the air receiver interface of traditional relay valve and compressed air brake cylinder interface are symmetricly set on the both sides of relay valve body respectively, air receiver interface and the compressed air brake cylinder interface of this differential type relay valve are arranged on the same side, gas transmission chamber is except air intake valve place, remainder is all closed, air receiver interface is connected with gas transmission chamber, after air intake valve is opened, gas transmission chamber is connected with compressed air brake cylinder interface, pressure gas directly enters into compressed air brake cylinder interface from air receiver interface through gas transmission chamber, shorten the length of compressed air conveying pipeline, indirectly shorten intake period, in addition, traditional relay valve needs to pass twice through intake valve port, this differential type relay valve only needs once by intake valve port, shorten the time of pressurized air by intake valve port, namely intake period is shortened, improve retro-speed.Novel structure, upper piston and relay piston can independent slide separately, from the pressurized air of main valve interface input, the first chamber is entered into by the first admission port, direct promotion relay piston slide downward, the pressurized air inputted from hand valve interface, enters into the second chamber by the second admission port, promote upper piston slide downward, indirectly drive relay piston slide downward.O RunddichtringO is adopted to seal, good airproof performance.Unit design is reasonable, and structure is simple, practical, is beneficial to industrialization promotion.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model provides.
In figure, valve body 1, division board 2, piston mouth 3, valve piston 4, hand valve interface 5, main valve interface 6, piston channel 7, upper piston 8, relay piston 9, drain tap 10, air receiver interface 11, compressed air brake cylinder interface 12, lower cover 13, air intake valve 14, valve return spring 15, piston sliding chamber 16, first admission port 17, exhausr port 18, cylindrical body 19, block body 20, spring perch 21, exhaust passage 22, cover of dust 23, second admission port 24.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, this differential type relay valve comprises valve body 1, laterally division board 2 is provided with in the middle part of valve body 1, piston mouth 3 is had in the middle part of division board 2, the valve piston 4 that can move axially is provided with in piston mouth 3, both sides, valve body 1 top have hand valve interface 5 and main valve interface 6, piston channel 7 is provided with between hand valve interface 5 and main valve interface 6, piston channel 7 is sealedly connected with the upper piston 8 that can move axially, relay piston 9 is provided with between upper piston 8 and valve piston 4, drain tap 10 is provided with between valve piston 4 and relay piston 9, it is characterized in that, side, valve body 1 bottom has air receiver interface 11 and compressed air brake cylinder interface 12, lower cover 13 is provided with bottom valve body 1, air intake valve 14 is provided with between lower cover 13 and valve piston 4, be connected by gas transmission chamber between air receiver interface 11 and compressed air brake cylinder interface 12, gas transmission chamber and compressed air brake cylinder interface 12 separate by air intake valve 14, valve piston 4 is socketed with the valve return spring 15 air intake valve 14 to upwards predetermincd tension, during braking, relay piston 9 moves down, contact with valve piston 4, drain tap 10 is closed, the predetermincd tension that valve piston 4 overcomes valve return spring 15 constantly moves down, air intake valve 14 is opened drain tap 10 and is closed, the air receiver interface 11 of tradition relay valve and compressed air brake cylinder interface 12 are symmetricly set on the both sides of relay valve body respectively, air receiver interface 11 and the compressed air brake cylinder interface 12 of this differential type relay valve are arranged on the same side, gas transmission chamber is except air intake valve 14 place, remainder is all closed, air receiver interface 11 is connected with gas transmission chamber, after air intake valve 14 is opened, gas transmission chamber is connected with compressed air brake cylinder interface 12, pressure gas directly enters into compressed air brake cylinder interface 12 from air receiver interface 11 through gas transmission chamber, shorten the length of compressed air conveying pipeline, indirectly shorten intake period, in addition, traditional relay valve needs to pass twice through intake valve port, this differential type relay valve only needs once by intake valve port, shorten the time of pressurized air by intake valve port, namely intake period is shortened, improve retro-speed.
Wherein, upper piston 8 have for the relay piston 9 sliding chamber 16 of piston in axial sliding, the first chamber is formed between relay piston 9 and main valve interface 6 wall, main valve interface 6 wall has the first admission port 17 being communicated with main valve interface 6 and the first chamber, upper piston 8 and relay piston 9 can independent slide separately, from the pressurized air that main valve interface 6 inputs, enter into the first chamber by the first admission port 17, directly promote relay piston 9 slide downward.The second chamber is formed between upper piston 8 and hand valve interface 5 wall, hand valve interface 5 wall has the second admission port 24 being communicated with hand valve interface 5 and the second chamber, the pressurized air of input from hand valve interface 5, the second chamber is entered into by the second admission port 24, promote upper piston 8 slide downward, indirectly drive relay piston 9 slide downward.Upper piston 8 and relay piston 9 are all connected with valve body 1 inner wall sealing, adopt O RunddichtringO to seal, good airproof performance.Lower cover 13 has exhausr port 18, exhausr port 18 two end axles is to upwards extending to form cylindrical body 19, cylindrical body 19 level extends internally to be formed and can stop the axial upwards flexible block body 20 of valve return spring 15, the spring perch 21 be fixed on valve piston 4 is provided with between block body 20 and valve return spring 15, cylindrical body 19 inwall removes the air intake valve 14 place equal valve piston 4 of remainder and is tightly connected, during braking, the predetermincd tension that valve piston 4 overcomes valve return spring 15 moves down, drain tap 10 is closed air intake valve 14 and is opened, during brake off, gas input in compressed air brake cylinder, promote relay piston 9 to move up, valve piston 4 moves up under the effect of valve return spring 15, air intake valve 14 is closed drain tap 10 and is opened.Valve piston 4 has the exhaust passage 22 being communicated with compressed air brake cylinder interface 12 and exhausr port 18, exhausr port 18 is provided with cover of dust 23 and cover of dust 23 and exhausr port 18 sidewall are tightly connected, cylindrical body 19, valve piston 4 and cover of dust 23 form gas transmission chamber, pressurized air enters into exhaust passage 22 by exhaust valve port, then by exhausr port 18 exits valve body 1.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as valve body 1, division board 2, piston mouth 3, valve piston 4, hand valve interface 5, main valve interface 6, piston channel 7, upper piston 8, relay piston 9, drain tap 10, air receiver interface 11, compressed air brake cylinder interface 12, lower cover 13, air intake valve 14, valve return spring 15, piston sliding chamber 16, first admission port 17, exhausr port 18, cylindrical body 19, block body 20, spring perch 21, exhaust passage 22, cover of dust 23, second admission port 24 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (6)
1. a differential type relay valve, comprise valve body (1), described valve body (1) middle part is laterally provided with division board (2), described division board (2) middle part has piston mouth (3), the valve piston (4) that can move axially is provided with in described piston mouth (3), described valve body (1) both sides, top have hand valve interface (5) and main valve interface (6), piston channel (7) is provided with between described hand valve interface (5) and main valve interface (6), described piston channel (7) is sealedly connected with the upper piston (8) that can move axially, relay piston (9) is provided with between described upper piston (8) and valve piston (4), drain tap (10) is provided with between described valve piston (4) and relay piston (9), it is characterized in that, described valve body (1) side, bottom has air receiver interface (11) and compressed air brake cylinder interface (12), described valve body (1) bottom is provided with lower cover (13), air intake valve (14) is provided with between described lower cover (13) and valve piston (4), be connected by gas transmission chamber between described air receiver interface (11) and compressed air brake cylinder interface (12), gas transmission chamber and compressed air brake cylinder interface (12) separate by described air intake valve (14), described valve piston (4) is socketed with the valve return spring (15) air intake valve (14) to upwards predetermincd tension.
2. differential type relay valve according to claim 1, it is characterized in that, described upper piston (8) have for relay piston (9) the sliding chamber (16) of piston in axial sliding, form the first chamber between described relay piston (9) and main valve interface (6) wall, described main valve interface (6) wall has the first admission port (17) being communicated with main valve interface (6) and the first chamber.
3. differential type relay valve according to claim 2, it is characterized in that, form the second chamber between described upper piston (8) and hand valve interface (5) wall, described hand valve interface (5) wall has the second admission port (24) being communicated with hand valve interface (5) and the second chamber.
4. differential type relay valve according to claim 3, is characterized in that, described upper piston (8) is all connected with valve body (1) inner wall sealing with relay piston (9).
5. differential type relay valve according to claim 4, it is characterized in that, described lower cover (13) has exhausr port (18), described exhausr port (18) two end axles is to upwards extending to form cylindrical body (19), the formation that extends internally of described cylindrical body (19) level can stop and is provided with the spring perch (21) be fixed on valve piston (4) between described block body (20) and valve return spring (15) by the block body (20) that valve return spring (15) is axially upwards flexible.
6. differential type relay valve according to claim 5, it is characterized in that, described valve piston (4) has the exhaust passage (22) being communicated with compressed air brake cylinder interface (12) and exhausr port (18), described exhausr port (18) is provided with cover of dust (23) and cover of dust (23) and exhausr port (18) sidewall are tightly connected, and described cylindrical body (19), valve piston (4) and cover of dust (23) form gas transmission chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420442684.6U CN204110020U (en) | 2014-08-07 | 2014-08-07 | Differential type relay valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420442684.6U CN204110020U (en) | 2014-08-07 | 2014-08-07 | Differential type relay valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204110020U true CN204110020U (en) | 2015-01-21 |
Family
ID=52327366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420442684.6U Expired - Fee Related CN204110020U (en) | 2014-08-07 | 2014-08-07 | Differential type relay valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204110020U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106882175A (en) * | 2017-04-01 | 2017-06-23 | 眉山中车制动科技股份有限公司 | Application valve and rail vehicle braking system |
| CN107672578A (en) * | 2017-11-02 | 2018-02-09 | 瑞安市瀚德车辆部件有限公司 | A kind of wagon control brake |
| EP3290280A1 (en) * | 2016-08-10 | 2018-03-07 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Multiple relay valve and pneumatic braking system with at least one multiple relay valve |
| CN109733364A (en) * | 2019-01-28 | 2019-05-10 | 武汉理工大学 | A kind of vehicle electrically controlling Pneumatic braking system automatic pressure regulator and control method |
| CN109823331A (en) * | 2019-01-28 | 2019-05-31 | 武汉理工大学 | A kind of vehicle electrically controlling Pneumatic braking system compositely proportional relay valve and control method |
| CN111963593A (en) * | 2020-08-22 | 2020-11-20 | 东科克诺尔商用车制动技术有限公司 | Double-piston differential valve assembly |
| CN112644447A (en) * | 2019-10-11 | 2021-04-13 | 梁助兴 | Pneumatic relay system for automobile |
| CN113613969A (en) * | 2019-03-27 | 2021-11-05 | 五十铃自动车株式会社 | Brake device |
-
2014
- 2014-08-07 CN CN201420442684.6U patent/CN204110020U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3290280A1 (en) * | 2016-08-10 | 2018-03-07 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Multiple relay valve and pneumatic braking system with at least one multiple relay valve |
| CN106882175A (en) * | 2017-04-01 | 2017-06-23 | 眉山中车制动科技股份有限公司 | Application valve and rail vehicle braking system |
| CN107672578A (en) * | 2017-11-02 | 2018-02-09 | 瑞安市瀚德车辆部件有限公司 | A kind of wagon control brake |
| CN107672578B (en) * | 2017-11-02 | 2024-02-13 | 瑞安市瀚德车辆部件有限公司 | Vehicle control brake |
| CN109733364A (en) * | 2019-01-28 | 2019-05-10 | 武汉理工大学 | A kind of vehicle electrically controlling Pneumatic braking system automatic pressure regulator and control method |
| CN109823331A (en) * | 2019-01-28 | 2019-05-31 | 武汉理工大学 | A kind of vehicle electrically controlling Pneumatic braking system compositely proportional relay valve and control method |
| CN113613969A (en) * | 2019-03-27 | 2021-11-05 | 五十铃自动车株式会社 | Brake device |
| CN113613969B (en) * | 2019-03-27 | 2023-06-20 | 五十铃自动车株式会社 | Braking device |
| CN112644447A (en) * | 2019-10-11 | 2021-04-13 | 梁助兴 | Pneumatic relay system for automobile |
| CN112644447B (en) * | 2019-10-11 | 2022-01-25 | 梁助兴 | Pneumatic relay system for automobile |
| CN111963593A (en) * | 2020-08-22 | 2020-11-20 | 东科克诺尔商用车制动技术有限公司 | Double-piston differential valve assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20150807 |
|
| EXPY | Termination of patent right or utility model |