CN104309602B - A kind of relay valve with empty and load brake-cylinder pressure adjustment function - Google Patents
A kind of relay valve with empty and load brake-cylinder pressure adjustment function Download PDFInfo
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- CN104309602B CN104309602B CN201410547519.1A CN201410547519A CN104309602B CN 104309602 B CN104309602 B CN 104309602B CN 201410547519 A CN201410547519 A CN 201410547519A CN 104309602 B CN104309602 B CN 104309602B
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- equalizing lever
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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
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
-
- 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
- B60T2250/00—Monitoring, detecting, estimating vehicle conditions
- B60T2250/02—Vehicle mass
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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 relay valve with empty and load brake-cylinder pressure adjustment function, form including valve body, within described valve body forms, be provided with supply valve, exhaust valve, equalizing lever composition, empty and load piston composition, push rod, pull bar and inshot spring.The present invention controls auxiliary reservoir to checking cylinder charge, exhaust according to the change of chamber volume pressure, thus complete the braking of train, pressurize and alleviation, and there is empty and load brake pressure regulatory function, the size of brake-cylinder pressure can be controlled according to vehicle load tonnage size, realize the brake-cylinder pressure different according to vehicle load offer, it is ensured that braking is reliable.
Description
Technical field
The present invention relates to a kind of relay valve with empty and load brake-cylinder pressure adjustment function.
Background technology
In Pneumatic brake systems in existing vehicle, it is braked control according to existing relay valve, there will be no matter vehicle is no-load running or heavy service, the pressure of its checking cylinder is all consistent situation, if vehicle no-load running can be caused according to loaded vehicle design, braking ratio is excessive, slides and flat wheel；And design according to empty wagons, then braking ratio wretched insufficiency when can cause vehicle heavy service, make braking unreliable.
Summary of the invention
It is an object of the invention to: for the problem of above-mentioned existence, it is provided that a kind of relay valve with empty and load brake-cylinder pressure adjustment function that can control brake-cylinder pressure size according to vehicle load tonnage size.
nullThe technical scheme is that and be achieved in that: a kind of have empty and load brake-cylinder pressure and adjust the relay valve of function，Form including valve body，It is characterized in that: within described valve body forms, be provided with supply valve、Exhaust valve、Equalizing lever composition and empty and load piston composition，Described supply valve、Exhaust valve、Equalizing lever composition and empty and load piston composition are divided into relatively independent multiple cavitys in being formed by valve body，On the upside of described supply valve, cavity connects with auxiliary reservoir，The cavity formed between described supply valve and exhaust valve connects with checking cylinder，The open and close controlling auxiliary reservoir of described supply valve and the break-make of checking cylinder，The open and close controlling checking cylinder of described exhaust valve and the break-make of exhaust outlet，The cavity that described exhaust valve is formed between forming with equalizing lever is connected with checking cylinder by pipeline，The cavity that described equalizing lever composition is formed between forming with empty and load piston connects with chamber volume，Cavity and empty and load signal communication on the downside of described empty and load piston composition，It is provided with push rod within described valve body forms，Described push rod one end is connected with equalizing lever composition，Its other end is resisted against the piston end surface of supply valve through exhaust valve，The jacking block corresponding with the piston of exhaust valve it is provided with in the middle part of described push rod，Described push rod diverse location in its axial direction is respectively used to control supply valve and the opening and closing of exhaust valve，Described empty and load piston composition is provided with pull bar，Described pull bar afterbody is connected with empty and load piston composition，Its head is arranged in the equalizing lever pole cap of equalizing lever composition，Gap is left between head and the equalizing lever pole cap of described pull bar，It is provided with inshot spring below described empty and load piston composition.
The relay valve with empty and load brake-cylinder pressure adjustment function of the present invention, its described valve body composition includes blind nut, body composition, middle body and lower cover, described blind nut is connected with body composition threaded one end, the described body composition other end is connected with middle body one end, the described middle body other end is connected with lower cover, described supply valve and exhaust valve are arranged in body composition, and described equalizing lever composition and empty and load piston composition are internal in being arranged on, and described inshot spring is arranged in the spring base of lower cover.
The present invention controls auxiliary reservoir to checking cylinder charge, exhaust according to the change of chamber volume pressure, thus complete the braking of train, pressurize and alleviation, and there is empty and load brake pressure regulatory function, the size of brake-cylinder pressure can be controlled according to vehicle load tonnage size, realize the brake-cylinder pressure different according to vehicle load offer, it is ensured that braking is reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the present invention structural representation at loaded vehicle retarder location.
Fig. 3 is the present invention structural representation at empty wagons retarder location.
Fig. 4 is that the present invention is at the structural representation alleviating position.
Fig. 5 is the present invention structural representation in pressurize position.
Marking in figure: 1 is supply valve, and 2 is exhaust valve, 3 form for equalizing lever, and 4 form for empty and load piston, 5 is auxiliary reservoir, and 6 is checking cylinder, and 7 is exhaust outlet, 8 is chamber volume, and 9 is empty and load signal, and 10 is push rod, 11 is jacking block, and 12 is pull bar, and 13 is equalizing lever pole cap, 14 is gap, and 15 is inshot spring, and 16 is blind nut, 17 form for body, and 18 is middle body, and 19 is lower cover.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of relay valve with empty and load brake-cylinder pressure adjustment function, form including valve body, it is provided with supply valve 1 within described valve body forms, exhaust valve 2, equalizing lever composition 3 and empty and load piston composition 4, described valve body composition includes blind nut 16, body composition 17, middle body 18 and lower cover 19, described blind nut 16 forms 17 threaded one ends and is connected with body, described body forms 17 other ends and is connected with middle body 18 one end, described middle body 18 other end is connected with lower cover 19, described supply valve 1 and exhaust valve 2 are arranged in body composition 17, described equalizing lever composition 3 and empty and load piston composition 4 are arranged in middle body 18.
nullWherein，Described supply valve 1、Exhaust valve 2、Equalizing lever composition 3 and empty and load piston composition 4 are divided into relatively independent multiple cavitys in being formed by valve body，On the upside of described supply valve 1, cavity connects with auxiliary reservoir 5，The cavity formed between described supply valve 1 and exhaust valve 2 connects with checking cylinder 6，The open and close controlling auxiliary reservoir 5 of described supply valve 1 and the break-make of checking cylinder 6，The open and close controlling checking cylinder 6 of described exhaust valve 2 and the break-make of exhaust outlet 7，The cavity formed between described exhaust valve 2 with equalizing lever composition 3 is connected with checking cylinder 6 by pipeline，The cavity formed between described equalizing lever composition 3 with empty and load piston composition 4 connects with chamber volume 8，On the downside of described empty and load piston composition 4, cavity connects with empty and load signal 9，It is provided with push rod 10 within described valve body forms，Described push rod 10 one end is connected with equalizing lever composition 3，Its other end is resisted against the piston end surface of supply valve 1 through exhaust valve 2，The jacking block 11 corresponding with the piston of exhaust valve 2 it is provided with in the middle part of described push rod 10，Described push rod 10 diverse location in its axial direction is respectively used to control supply valve 1 and the opening and closing of exhaust valve 2，Described empty and load piston composition 4 is provided with pull bar 12，Described pull bar 12 afterbody is connected with empty and load piston composition 4，Its head is arranged in the equalizing lever pole cap 13 of equalizing lever composition 3，Gap 14 is left between head and the equalizing lever pole cap 13 of described pull bar 12，It is provided with inshot spring 15 below described empty and load piston composition 4，Described inshot spring 15 is arranged in the spring base of lower cover 19.
As in figure 2 it is shown, be the present invention schematic diagram at loaded vehicle retarder location.When train is in loaded position, signal i.e. pressure air from empty and load, directly empty and load piston is formed jack-up, simultaneously because have gap between the head of pull bar and equalizing lever pole cap, therefore when chamber volume has pressure air, equalizing lever is moved the constraint of not tension member by promoting, it is not provided constraints in the course of action of equalizing lever composition by i.e. empty and load piston composition, and equalizing lever drives and moves and back down supply valve on push rod, auxiliary reservoir pressure air is made to fill wind through supply valve to checking cylinder, checking cylinder connects on the upside of equalizing lever composition simultaneously, exhaust valve is closed, increase along with brake-cylinder pressure, the gradually pressure of chamber volume on the downside of balance equalizing lever composition, when brake-cylinder pressure co-content chamber pressure is equal, supply valve cuts out, now brake-cylinder pressure is loaded vehicle pressure.
As it is shown on figure 3, be the present invention schematic diagram at empty wagons retarder location.When train is in empty parking space, when on the downside of chamber volume pressure air enters equalizing lever composition, first promotes equalizing lever to move up, drive push rod to back down supply valve, make auxiliary reservoir pressure air fill wind through supply valve to checking cylinder；When chamber volume pressure continues to rise, chamber volume pressure compresses inshot spring further through empty and load piston while making to move on equalizing lever, empty and load piston is made to move down, now empty and load piston is acted on by pull bar participation, the upper shifting of equalizing lever is pind down by empty wagons car piston, and now on the downside of equalizing lever composition, pressure has been cancelled a part, when therefore reaching balance, brake-cylinder pressure is low compared with loaded position, it is achieved thereby that obtain the requirement of less brake force when empty parking space.
As shown in Figure 4, for the present invention at the schematic diagram alleviating position.When chamber volume pressure reduces, equalizing lever moves down under the effect of upside brake-cylinder pressure, exhaust valve is backed down by the jacking block in the middle part of push rod, brake-cylinder pressure air is arranged to air through exhaust outlet, owing to checking cylinder communicates on the upside of equalizing lever composition, the air pressure on the upside of equalizing lever composition also decreases, for the lower lateral pressure of balance equalizing lever composition, equalizing lever is gradually upper to be moved, until exhaust valve is closed.
As it is shown in figure 5, be the present invention schematic diagram in pressurize position.The chamber volume pressure of brake-cylinder pressure and downside on the upside of equalizing lever composition is close to time consistent, and equalizing lever is in intermediate equilibria position, supply valve and exhaust valve and is turned off valve port under its spring effect, and checking cylinder stops inflation or is vented, in packing state.If now chamber volume pressure and the brake-cylinder pressure of equalizing lever composition upper and lower sides occurs that pressure differential, supply valve or exhaust valve are unlocked again again, checking cylinder fills wind or air draft again, until brake-cylinder pressure with chamber volume pressure close to consistent, pressurize again.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (2)
1. there is empty and load brake-cylinder pressure and adjust a relay valve for function, form including valve body, it is characterised in that:
nullIt is provided with supply valve (1) within described valve body forms、Exhaust valve (2)、Equalizing lever composition (3) and empty and load piston composition (4)，Described supply valve (1)、Exhaust valve (2)、Equalizing lever composition (3) and empty and load piston composition (4) are divided into relatively independent multiple cavitys in being formed by valve body，Described supply valve (1) upside cavity connects with auxiliary reservoir (5)，The cavity formed between described supply valve (1) with exhaust valve (2) connects with checking cylinder (6)，The open and close controlling auxiliary reservoir (5) of described supply valve (1) and the break-make of checking cylinder (6)，The open and close controlling checking cylinder (6) of described exhaust valve (2) and the break-make of exhaust outlet (7)，The cavity formed between described exhaust valve (2) with equalizing lever composition (3) is connected with checking cylinder (6) by pipeline，The cavity formed between described equalizing lever composition (3) with empty and load piston composition (4) connects with chamber volume (8)，Described empty and load piston composition (4) downside cavity connects with empty and load signal (9)，It is provided with push rod (10) within described valve body forms，Described push rod (10) one end is connected with equalizing lever composition (3)，Push rod (10) other end is resisted against the piston end surface of supply valve (1) through exhaust valve (2)，Described push rod (10) middle part is provided with the jacking block (11) corresponding with the piston of exhaust valve (2)，Described push rod (10) diverse location in the axial direction is respectively used to control supply valve (1) and the opening and closing of exhaust valve (2)，Described empty and load piston composition (4) is provided with pull bar (12)，Described pull bar (12) afterbody is connected with empty and load piston composition (4)，Pull bar (12) head is arranged in the equalizing lever pole cap (13) of equalizing lever composition (3)，Gap (14) is left between head and the equalizing lever pole cap (13) of described pull bar (12)，Described empty and load piston composition (4) lower section is provided with inshot spring (15).
The relay valve with empty and load brake-cylinder pressure adjustment function the most according to claim 1, it is characterized in that: described valve body composition includes blind nut (16), body composition (17), middle body (18) and lower cover (19), described blind nut (16) is connected with body composition (17) threaded one end, described body composition (17) other end is connected with middle body (18) one end, described middle body (18) other end is connected with lower cover (19), described supply valve (1) and exhaust valve (2) are arranged in body composition (17), described equalizing lever composition (3) and empty and load piston composition (4) are arranged in middle body (18), described inshot spring (15) is arranged in the spring base of lower cover (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547519.1A CN104309602B (en) | 2014-10-16 | 2014-10-16 | A kind of relay valve with empty and load brake-cylinder pressure adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547519.1A CN104309602B (en) | 2014-10-16 | 2014-10-16 | A kind of relay valve with empty and load brake-cylinder pressure adjustment function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104309602A CN104309602A (en) | 2015-01-28 |
| CN104309602B true CN104309602B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410547519.1A Active CN104309602B (en) | 2014-10-16 | 2014-10-16 | A kind of relay valve with empty and load brake-cylinder pressure adjustment function |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347340B (en) * | 2016-11-16 | 2023-04-28 | 眉山中车制动科技股份有限公司 | Distribution valve for controlling conversion between inflation relief position and braking position of volume chamber |
| CN106740786B (en) * | 2016-12-29 | 2023-05-26 | 华伍轨道交通装备（上海）有限责任公司 | Emergency braking system |
| CN110422156B (en) * | 2019-08-27 | 2023-07-21 | 天津铁路信号有限责任公司 | Multistage wind pressure regulator and application thereof |
| CN111762142B (en) * | 2020-07-09 | 2021-06-18 | 眉山中车制动科技股份有限公司 | Relay valve capable of outputting two pressures |
| CN113911093B (en) * | 2021-10-28 | 2022-10-04 | 眉山中车制动科技股份有限公司 | Relay valve jumping mechanism |
| EP4230488B1 (en) * | 2021-10-28 | 2024-08-28 | Meishan CRRC Brake Science&Technologyco., Ltd | Relay valve |
| CN115214579B (en) * | 2022-07-15 | 2023-10-13 | 眉山中车制动科技股份有限公司 | Brake pressure limiting valve for railway vehicle |
| CN115179914B (en) * | 2022-07-15 | 2023-07-07 | 眉山中车制动科技股份有限公司 | Two-stage adjusting device and adjusting method for railway vehicle braking empty and heavy vehicle |
| CN116678649B (en) * | 2023-06-07 | 2024-05-24 | 眉山中车制动科技股份有限公司 | Air brake system of multi-system single-vehicle test platform of railway wagon |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201026869Y (en) * | 2006-12-31 | 2008-02-27 | 万安集团诸暨汽车制动系统有限公司 | Air control load sensing valve assembly |
| CN102159433B (en) * | 2008-09-22 | 2013-11-06 | 纳博特斯克株式会社 | Weight-adjusting valve and brake control device |
| EP2261095B1 (en) * | 2009-06-11 | 2015-04-15 | Dako-CZ, a.s. | Braking device for multiple wagon vehicles, such as railway trains, kinked characteristic valve and method |
| CN103192816B (en) * | 2013-04-23 | 2016-02-03 | 中国铁路总公司 | Multichannel control pressure relay valve |
| CN203832478U (en) * | 2014-05-13 | 2014-09-17 | 四川制动科技股份有限公司 | Automatic railway vehicle empty and load adjustment valve of balance pivot type lever structure |
| CN104085387B (en) * | 2014-07-11 | 2017-04-19 | 南京中车浦镇海泰制动设备有限公司 | Output-selectable empty and load adjusting valve |
| CN204136976U (en) * | 2014-10-16 | 2015-02-04 | 四川制动科技股份有限公司 | A kind of relay valve with empty and load brake-cylinder pressure adjustment function |
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| CN104309602A (en) | 2015-01-28 |
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Address after: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Applicant after: Meisha Zhongke Brake Technology Co., Ltd. Address before: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Applicant before: Sichuan Brake Science and Technology Co. Ltd. |
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