CN102180160A - Pressure-limiting valve for brake system of rapid train - Google Patents
Pressure-limiting valve for brake system of rapid train Download PDFInfo
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- CN102180160A CN102180160A CN2011100977412A CN201110097741A CN102180160A CN 102180160 A CN102180160 A CN 102180160A CN 2011100977412 A CN2011100977412 A CN 2011100977412A CN 201110097741 A CN201110097741 A CN 201110097741A CN 102180160 A CN102180160 A CN 102180160A
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Abstract
The invention provides a pressure-limiting valve for a brake system of a rapid train. The pressure-limiting valve comprises a valve body, an adjustment cavity, a weighing cavity, an action cavity and a charging/discharging cavity, wherein the adjustment cavity, the weighing cavity, the action cavity and the charging/discharging cavity are positioned inside the valve body; a lever is arranged in the adjustment cavity; a weighing diaphragm piston is arranged between the weighing cavity and the adjustment cavity; an action diaphragm piston is arranged between the action cavity and the adjustment cavity; the bottom ends of a weighing top rod in the centre of the weighing diaphragm piston and an action top rod in the centre of the action diaphragm piston are pressed against two ends of the lever respectively; the top part of the weighing top rod is pressed against a bottom surface of the piston at the top of the weighing cavity; a charging/discharging valve is arranged in the charging/discharging cavity; a valve seat is arranged below the charging/discharging valve; the top part of the action top rod is pressed against the bottom surface of the charging/discharging valve; and a lower surface of one end of the lever corresponding to the action top rod is pressed on a top surface of a second elastic device. The pressure-limiting valve for the brake system of the rapid train provided by the invention is simple in structure, sensitive to reaction, convenient for installation and repair and small in size, and can meet a requirement on integrated installation of the rapid train.
Description
Technical field
The present invention relates to the rolling stock braking technology, relate in particular to a kind of limiting valve that is used for the high-speed train braking system.
Background technology
The essence process of rolling stock braking is the process that the kinetic energy of rolling stock operation is changed into the energy of other form, seek out same braking effect, the car that kinetic energy is big just needs bigger braking force, that is to say that the gaseous tension that need be input to brake cylinder when carrying is heavy more should be big more.
In the brake system of rail vehicle of prior art, the main effect of limiting valve is to adjust the pressure that outputs to brake cylinder according to bogie truck air bellow load-carrying pressure signal, to guarantee the conformability of corresponding a certain other braking deceleration of retrostage under the different loads operating mode, to obtain good deceleration and stopping performance and travelling comfort.
Fig. 1 is a limiting valve constructional drawing commonly used in the prior art.As shown in Figure 1, limiting valve of the prior art mainly forms for row portion 1d four parts by the 1a of check weighing portion, lever portion 1b, pressure service portion 1c and air pressure.
Check weighing portion 1a right side is the check weighing lamina membranacea, comprises membranelle plate guide pin bushing, big lamina membranacea guide pin bushing, piston rod, membranelle plate piston, big lamina membranacea piston, two little lamina membranaceas, a big lamina membranacea; Check weighing portion left side is a weight sensing spring, comprises roller push rod, spring push-rod, weight sensing spring, weight sensing spring seat, thrust baring, two bearing collars, Adjusting bolt Adjusting screw, setting nut.
Lever portion 1b by upper lever, down lever, roller, rolling wheel support, roller push rod, rise to spring, upper springs seat, lower springs seat etc. and form.
Air pressure gives the 1d of row portion by giving the valve lamina membranacea for valve piston, self-sealing, give valve, lamina membranacea, lamina membranacea cover, forming for valve guide pin bushing, restoring spring etc.
As seen, the limiting valve complex structure of prior art, it is inner that easily wearing detail is too much, make and install and the inspection operation difficulty, and complicated structure causes the volume of limiting valve excessive, can't realize being integrated into the brake system Pneumatic module with other Pneumatic component, therefore, the limiting valve of prior art can't satisfy the needs of high quick-action train to the control of braking parts.
Summary of the invention
At the above-mentioned defective of prior art, the invention provides a kind of limiting valve that is used for the high-speed train braking system simple in structure, sensitive.
The invention provides a kind of limiting valve that is used for the high-speed train braking system, comprising: a valve body is positioned at the adjustment chamber of described valve inner, the chamber of weighing, acting chamber and the row of giving chamber; Wherein, described chamber and the described acting chamber of weighing is set up in parallel in the top in described adjustment chamber, the described row of giving chamber is arranged at the top of described acting chamber, the described row of giving chamber is connected with described acting chamber, described adjustment chamber is connected with atmosphere, the described chamber of weighing is connected with first valve port by first gas circuit, and described acting chamber is connected with second valve port by second gas circuit, and the described row of giving chamber is connected with the 3rd valve port by the 3rd gas circuit;
Be provided with lever and the balance pivot between the bottom surface in described lever and described adjustment chamber in the described adjustment chamber, described weighing is provided with the lamina membranacea piston of weighing between chamber and the described adjustment chamber, the described lamina membranacea piston center fixation of weighing is provided with the push rod of weighing, be provided with effect lamina membranacea piston between described acting chamber and the described adjustment chamber, described effect lamina membranacea piston center fixation is provided with the effect push rod, and described bottom of weighing push rod and described effect push rod is pressed on the two ends of described lever respectively;
The top in the described chamber of weighing is a piston, fixedly install on the end face of described piston to be useful on first springing of regulating described piston position, and described first springing is connected with atmosphere; The top of the described push rod of weighing is replaced on the bottom surface of described piston; The described top of giving the row chamber is one to give valve, be provided with the spring that is in compressive state in the described end face of giving valve and the cavity between the described valve body, the described position of giving the below of valve and leading to described the 3rd gas circuit in the described row of giving chamber is provided with and the described valve seat that adapts to valve, the top of described effect push rod is passed described valve seat and is replaced described and give on the bottom surface of valve, and leaves between described effect push rod and the described valve seat and be used to brake the gap that wind regime passes through; Described lever is pressed on the end face of second springing with the lower surface of the corresponding end of described effect push rod.
The limiting valve that is used for the high-speed train braking system provided by the invention, simple in structure, be quick on the draw, can transport to the pressure size of the braking wind regime of brake cylinder according to the adjustment of actual car weight situation, thereby obtain good deceleration and stopping performance, and inner attrition component is few, is convenient to install and maintenance.In addition, because simple in structure, make the volume of limiting valve of the present invention reduce greatly with base part than of the prior art, can with the integrated installation of other brake component, further satisfied the modular design demand of high speed train.
Description of drawings
Fig. 1 is a limiting valve constructional drawing commonly used in the prior art.
Fig. 2 is the structural representation that the present invention is used for the limiting valve embodiment of high-speed train braking system.
Reference numeral:
1a-check weighing portion; The 1b-lever portion; 1c-pressure service portion;
The 1d-air pressure is given row portion; The 10-valve body; 101-adjusts the chamber;
The 102-chamber of weighing; The 103-acting chamber; 104-gives row the chamber;
41-first springing; 5-second springing; 201-first valve port;
202-second valve port; 203-the 3rd valve port; The 12-lamina membranacea;
The 3-lever; The 31-balance pivot; The L43-gas circuit;
2-effect lamina membranacea piston; The 121-push rod of weighing; The 1-lamina membranacea piston of weighing;
The 111-dividing plate; The 4-piston; 22-effect push rod;
The 611-spring; 61-gives valve; The 62-valve seat;
411-first spring; 431-regulates blind nut; 412-supports bar;
51-second spring; The 401-seal ring; The 432-adjusting screw(rod);
A, the b-arm of force; 32-lever adjusting screw(rod); The 122-bar cover of weighing;
The 433-gas port.
The specific embodiment
Further specify the technical scheme of the embodiment of the invention below in conjunction with the drawings and specific embodiments.
Fig. 2 is the structural representation that the present invention is used for the limiting valve embodiment of high-speed train braking system.Please refer to Fig. 2, the limiting valve that is used for the high-speed train braking system that present embodiment provides comprises: a valve body 10 is positioned at valve body 10 in-to-ins and adjusts chamber 101, the chamber 102 of weighing, acting chamber 103 and the row of giving chamber 104; Wherein, weigh chamber 102 and acting chamber 103 is set up in parallel in the top of adjusting chamber 101, the row of giving chamber 104 is arranged at the top of acting chamber 103, the row of giving chamber 104 is connected with acting chamber 103, adjusting chamber 101 is connected with atmosphere, the chamber 102 of weighing is connected with first valve port 201 by first gas circuit, and acting chamber 103 is connected with second valve port 202 by second gas circuit, and the row of giving chamber 104 is connected with the 3rd valve port 203 by the 3rd gas circuit.Particularly, the row of giving chamber 104 can be communicated with acting chamber 103 by setting up gas circuit L43, adjusts chamber 101 and can realize by on the valve body 10 around the adjustment chamber 101 opening being set.
Adjust and be provided with lever 3 and the balance pivot 31 between the bottom surface in lever 3 and adjustment chamber 101 in the chamber 101, weigh and be provided with the lamina membranacea piston 1 of weighing between chamber 102 and the adjustment chamber 101, lamina membranacea piston 1 center fixation of weighing is provided with the push rod 121 of weighing, be provided with effect lamina membranacea piston 2 between acting chamber 103 and the adjustment chamber 101, effect lamina membranacea piston 2 center fixation are provided with effect push rod 22, and the bottom of weigh push rod 121 and effect push rod 22 is pressed on the two ends of lever 3 respectively.Promptly, to adjust chamber 101 and the chamber 102 of weighing respectively, adjust chamber 101 and acting chamber 103 separates by weigh template piston 1 and effect lamina membranacea piston 2 of setting, the lamina membranacea 12 that the periphery of lamina membranacea piston 1 and effect lamina membranacea piston 2 all can make for elastomeric material of weighing better seals with the sidewall of valve body 10 realizing.Particularly, adjusting the sidewall in chamber 101 is arranged to help to the circumferentially shape of location of push rod 121 and effect push rod 22 of weighing, for example, in adjusting chamber 101, a dividing plate 111 of captiveing joint with valve body 10 is set, on dividing plate 111, is provided with two and is respectively applied for and weighs push rod 121 and act on the hole that push rod 22 passes through.In the present embodiment, the push rod 121 of weighing all is arranged to cone with the bottom of effect push rod 22, accordingly, the two ends of lever 3 also are provided with cone tank with the push rod 121 of weighing with the surface that effect push rod 22 contacts, so that lever 3 transmits power and motion more accurately and effectively.
The weigh top in chamber 102 is a piston 4, fixedly install first springing 41 that is useful on adjusting piston 4 positions on the end face of piston 4, and first springing 41 is connected with atmosphere; The weigh top of push rod 121 is replaced on the bottom surface of piston 4; The top of giving row chamber 104 is one to give valve 61, give in the end face of valve 61 and the cavity between the valve body 10 and be provided with the spring 611 that is in compressive state, give the below of valve 61 and the valve seat 62 that is provided with and adapts for valve 61 in the position of leading to the 3rd gas circuit to row chamber 104, the top of effect push rod 22 is passed valve seat 62 and is replaced and giving on the bottom surface of valve 61, and leaves between effect push rod 22 and the valve seat 62 and be used to brake the gap that wind regime passes through; Lever 3 is pressed on the end face of second springing 5 with the lower surface of effect push rod 22 corresponding ends.Particularly, first springing 41 is captiveed joint with piston 4, can drive piston 4 by first springing 41 and move up and down, and offers gas port 433 on first springing 41, so that first springing, 41 inside are connected with atmosphere, prevent to produce extra pressure.On the one hand, contact for the end face of valve 61 with the bottom of spring 611, the top of spring 611 is by compression then replaced on the inside top surface of valve body 10, in the present embodiment, install, be provided with an end cap in the position on corresponding spring 611 tops for convenient, 611 on spring is arranged at this end cap and gives in the valve 61 formed cavitys, like this, spring 611 can provide certain acting force of the spring when moving up for valve 61, make effect push rod 22 all the time with the bottom surface closed contact of giving valve 61; On the other hand, adapt for valve 61 and valve seat 62, refer to the valve 61 and the shape and size of valve seat 62 and work in coordination, thereby, can be located on the valve seat 62 when moving downward for valve 61, at this moment, just be in to row chamber 104 for valve 61 and lead to the position of the 3rd gas circuit, lead to the 3rd gas circuit in row chamber 104 and cut off for valve 61.
The limiting valve that is used for the high-speed train braking system that present embodiment provides in use, is connected first valve port 201 with air bellow on the train bogie truck, the 3rd valve port 203 is connected with the upstream wind regime, and second valve port 202 is connected with brake cylinder.Its working process is as follows: when train is in relieved state, the 3rd valve port 203 places do not have the wind regime input, pressure gas in the air bellow enters in the chamber 102 of weighing via first gas circuit by first valve port 201, and act on the lamina membranacea piston 1 of weighing, the lamina membranacea piston 1 of weighing is moved down together with the push rod 121 of weighing, corresponding end on the lever 3 is pressed down, then the other end of lever 3 is upturned, make and move up with the effect push rod 22 that is pressed in this end, like this, the top of effect push rod 22 will and move up to valve 61 jack-up thereupon, so that the 3rd gas circuit is opened, make to row chamber 104 to be connected with the 3rd valve port 203 by the 3rd gas circuit.When train braking, braking wind regime from the upstream enters the chamber 104 to row through the 3rd valve port 203, after giving the gap between valve 61 and the valve seat 62, warp is given the gas circuit L43 between row chamber 104 and the acting chamber 103 again, enter into acting chamber 103, enter the brake cylinder of train again by second valve port 202, simultaneously, the braking wind regime also acts on the effect lamina membranacea piston 2, when the pressure of braking wind regime reaches a certain amount of, impetus lamina membranacea piston 2 is moved down together with effect push rod 22, at this moment, also move down for valve 61, after being located on the valve seat 62 for valve 61 thereupon, the 3rd gas circuit is closed, and the pressure of braking wind regime that is input to the brake cylinder of train no longer increases.In addition, in the present embodiment, can also piston 4 be placed suitable position by regulating first springing 41, and make the lamina membranacea piston 1 of weighing be in suitable position, minimum brake-pressure when simulating empty wagons with this, so that under adapt air spring pressure deficiency or other failure condition, still can realize the actv. braking.
From the above, the limiting valve that is used for the high-speed train braking system that present embodiment provides, can be input to the pressure of the braking wind regime of brake cylinder according to the load-carrying pressure signal adjustment of air bellow, and, simple in structure, be quick on the draw, volume is little, is convenient to install and maintenance, can also adopt plate dress form of flanges and the integrated installation of other brake component, satisfy the requirement of high speed train limiting valve.
In an embodiment of the present invention, as shown in Figure 2, first springing 41 comprises that a center has upper spring seat to bar 412, is connected first spring 411 between described upper spring seat and the piston 4, and first spiro rod regulating device that is used to regulate first spring, 411 length that is arranged in valve body 10.Particularly, first spiro rod regulating device can comprise to be regulated blind nut 431 and is arranged in the adjusting screw(rod) 432 of regulating blind nut 431 centers, regulating blind nut 431 is screwed on the valve body 10, the bottom of adjusting screw(rod) 432 is pressed on described upper spring seat surface, like this by regulating adjusting screw(rod) 432, just can drive described upper spring seat moves down, first spring 411 is compressed, when after bar 412 touches the end face of piston 4, then drive piston 4 and move down, thereby realization is to the adjustment of the position of the lamina membranacea piston 1 of weighing.The degree of regulation height of first springing, and easy to operate, the minimum brake-pressure in the time of can further accurately simulating empty wagons reaches better braking effect.
In an embodiment of the present invention, as shown in Figure 2, second springing 5 comprises upper spring seat, lower spring cup, is connected second spring 51 between described upper spring seat and the described lower spring cup, and second spiro rod regulating device that is used to regulate second spring, 51 length that is arranged in valve body 10.Particularly, second spiro rod regulating device comprises the adjusting blind nut 431 that is screwed onto on the valve body 10 and is arranged in the adjusting screw(rod) 432 of regulating blind nut 431 centers, the bottom of adjusting screw(rod) 432 is replaced on the lower surface of described lower spring cup, can adjust the position of described upper spring seat and described lower spring cup and the amount of compression of second spring 51 by adjusting screw(rod) 432, thereby further cooperate the better minimum braking force during the simulation empty wagons of first springing 41.
In the above-described embodiments, second spiro rod regulating device is provided with and is used for to make things convenient for processing and manufacturing, also helping the maintenance of valve body with adjusting the gas port 433 that chamber 101 is connected with atmosphere.
In an embodiment of the present invention, as shown in Figure 2, the lever adjusting device that also comprises the level attitude that is used for adjustment (adjusting) lever fulcrum 31, particularly, balance pivot 31 is a roller, be connected on the flat board by the pin that is arranged in described roller center, the bottom of this flat board and lever adjusting screw(rod) 32 are fixed together, by the level attitude of adjusting balance pivot 31 that moves of lever adjusting screw(rod) 32 along continuous straight runs.Like this, can adjust the arm of force a of lever 3 and the ratio of arm of force b, thereby realize to realize different braking effects the adjustment of the maximum pressure value of the braking wind regime of the brake cylinder that outputs to train by the position of adjusting balance pivot 31.
In an embodiment of the present invention, as shown in Figure 2, what effect push rod 22 comprised top is fixedly set in the bar cover of one and the bar core of bottom with effect lamina membranacea piston 2, described bar core is fastened in the cavity at described bar cover middle part, such split design, can make things convenient for processing and manufacturing and installation, further improve practicality, reduced cost.
In an embodiment of the present invention, as shown in Figure 2, piston 4 sides at 102 tops, chamber of weighing are provided with the seal ring 401 of K tee section along circumferentially being provided with groove in the described groove.When in the chamber 102 of weighing gas being arranged, can expand towards periphery because of aerification in the formed K shape of the K tee section groove of seal ring 401, reinforcement reduces the loss by the gas of air bellow input to the sealing effectiveness in the chamber 102 of weighing, and improves the work sensitieness of the limiting valve of present embodiment.
In an embodiment of the present invention, as shown in Figure 2, adjust to be provided with in the chamber 101 and be used for the circumferentially bars cover 122 of weighing of location of push rod 121 of weighing, wherein, the bar of weighing cover 122 and weigh and take free-running fit between the push rod 121.Circumferentially locate by the 122 pairs of push rods of weighing of bar cover of weighing, when further improving locating effect, also convenient assembly manipulation more helps daily cleaning handling labor.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a limiting valve that is used for the high-speed train braking system is characterized in that, comprising: a valve body is positioned at the adjustment chamber of described valve inner, the chamber of weighing, acting chamber and the row of giving chamber; Wherein, described chamber and the described acting chamber of weighing is set up in parallel in the top in described adjustment chamber, the described row of giving chamber is arranged at the top of described acting chamber, the described row of giving chamber is connected with described acting chamber, described adjustment chamber is connected with atmosphere, the described chamber of weighing is connected with first valve port by first gas circuit, and described acting chamber is connected with second valve port by second gas circuit, and the described row of giving chamber is connected with the 3rd valve port by the 3rd gas circuit;
Be provided with lever and the balance pivot between the bottom surface in described lever and described adjustment chamber in the described adjustment chamber, described weighing is provided with the lamina membranacea piston of weighing between chamber and the described adjustment chamber, the described lamina membranacea piston center fixation of weighing is provided with the push rod of weighing, be provided with effect lamina membranacea piston between described acting chamber and the described adjustment chamber, described effect lamina membranacea piston center fixation is provided with the effect push rod, and described bottom of weighing push rod and described effect push rod is pressed on the two ends of described lever respectively;
The top in the described chamber of weighing is a piston, fixedly install on the end face of described piston to be useful on first springing of regulating described piston position, and described first springing is connected with atmosphere; The top of the described push rod of weighing is replaced on the bottom surface of described piston; The described top of giving the row chamber is one to give valve, be provided with the spring that is in compressive state in the described end face of giving valve and the cavity between the described valve body, the described position of giving the below of valve and leading to described the 3rd gas circuit in the described row of giving chamber is provided with and the described valve seat that adapts to valve, the top of described effect push rod is passed described valve seat and is replaced described and give on the bottom surface of valve, and leaves between described effect push rod and the described valve seat and be used to brake the gap that wind regime passes through; Described lever is pressed on the end face of second springing with the lower surface of the corresponding end of described effect push rod.
2. the limiting valve that is used for the high-speed train braking system according to claim 1, it is characterized in that, described first springing comprises that a center has upper spring seat to bar, is connected first spring between described upper spring seat and the described piston, and first spiro rod regulating device that is used to regulate the described first spring length that is arranged in described valve body.
3. the limiting valve that is used for the high-speed train braking system according to claim 1, it is characterized in that, described second springing comprises upper spring seat, lower spring cup, is connected second spring between described upper spring seat and the described lower spring cup, and second spiro rod regulating device that is used to regulate the described second spring length that is arranged in described valve body.
4. the limiting valve that is used for the high-speed train braking system according to claim 3 is characterized in that, described second spiro rod regulating device is provided with and is used for gas port that described adjustment chamber is connected with atmosphere.
5. the limiting valve that is used for the high-speed train braking system according to claim 1 is characterized in that, also comprises the lever adjusting device of the level attitude that is used to regulate described balance pivot.
6. the limiting valve that is used for the high-speed train braking system according to claim 1 and 2, it is characterized in that, what described effect push rod comprised top is fixedly set in the bar cover of one and the bar core of bottom with described effect lamina membranacea piston, and described bar core is fastened in the cavity in the middle part of the described bar cover.
7. according to claim 1 or the 3 or 5 described limiting valves that are used for the high-speed train braking system, it is characterized in that the piston side of the described top of chamber of weighing is provided with the seal ring of K tee section along circumferentially being provided with groove in the described groove.
8. according to claim 1 or the 3 or 5 described limiting valves that are used for the high-speed train braking system, it is characterized in that, be provided with the bar cover of weighing that is used for the described circumferential location of push rod of weighing in the described adjustment chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100977412A CN102180160A (en) | 2011-04-19 | 2011-04-19 | Pressure-limiting valve for brake system of rapid train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100977412A CN102180160A (en) | 2011-04-19 | 2011-04-19 | Pressure-limiting valve for brake system of rapid train |
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| Publication Number | Publication Date |
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| CN102180160A true CN102180160A (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100977412A Pending CN102180160A (en) | 2011-04-19 | 2011-04-19 | Pressure-limiting valve for brake system of rapid train |
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Cited By (8)
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| CN103043075A (en) * | 2012-12-24 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Empty and load valve for high-speed motor train units and urban rail transit vehicles |
| CN106274866A (en) * | 2016-08-29 | 2017-01-04 | 中车青岛四方机车车辆股份有限公司 | The pressure acquisition device of rail vehicle and brake control and method |
| CN107200000A (en) * | 2017-05-17 | 2017-09-26 | 中国神华能源股份有限公司 | Pressure limiting valve, train braking system and train |
| CN108725414A (en) * | 2018-05-24 | 2018-11-02 | 安徽江淮汽车集团股份有限公司 | A kind of braking pressure limiting valve |
| CN111448113A (en) * | 2017-12-15 | 2020-07-24 | 法维莱运输亚眠公司 | Brake system for railway vehicles |
| RU211815U1 (en) * | 2022-02-17 | 2022-06-23 | Акционерное общество "Ритм" Тверское производство тормозной аппаратуры (АО "Ритм" ТПТА) | PRESSURE RELIEF VALVE |
| CN115214579A (en) * | 2022-07-15 | 2022-10-21 | 眉山中车制动科技股份有限公司 | Railway vehicle braking pressure limiting valve |
| CN115431939A (en) * | 2022-09-30 | 2022-12-06 | 中车制动系统有限公司 | Empty and heavy vehicle valve and adjusting method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043075A (en) * | 2012-12-24 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Empty and load valve for high-speed motor train units and urban rail transit vehicles |
| CN106274866A (en) * | 2016-08-29 | 2017-01-04 | 中车青岛四方机车车辆股份有限公司 | The pressure acquisition device of rail vehicle and brake control and method |
| CN106274866B (en) * | 2016-08-29 | 2019-03-05 | 中车青岛四方机车车辆股份有限公司 | The pressure acquisition device and brake control and method of rail vehicle |
| CN107200000A (en) * | 2017-05-17 | 2017-09-26 | 中国神华能源股份有限公司 | Pressure limiting valve, train braking system and train |
| CN107200000B (en) * | 2017-05-17 | 2019-04-26 | 中国神华能源股份有限公司 | Pressure limiting valve, train braking system and train |
| US11565729B2 (en) | 2017-12-15 | 2023-01-31 | Faiveley Transport Amiens | Braking system for a railway vehicle |
| CN111448113A (en) * | 2017-12-15 | 2020-07-24 | 法维莱运输亚眠公司 | Brake system for railway vehicles |
| CN108725414A (en) * | 2018-05-24 | 2018-11-02 | 安徽江淮汽车集团股份有限公司 | A kind of braking pressure limiting valve |
| RU211815U1 (en) * | 2022-02-17 | 2022-06-23 | Акционерное общество "Ритм" Тверское производство тормозной аппаратуры (АО "Ритм" ТПТА) | PRESSURE RELIEF VALVE |
| CN115214579A (en) * | 2022-07-15 | 2022-10-21 | 眉山中车制动科技股份有限公司 | Railway vehicle braking pressure limiting 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 |
| CN115431939A (en) * | 2022-09-30 | 2022-12-06 | 中车制动系统有限公司 | Empty and heavy vehicle valve and adjusting method thereof |
| CN115431939B (en) * | 2022-09-30 | 2024-04-19 | 中车制动系统有限公司 | Air-weight vehicle valve and adjusting method thereof |
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Application publication date: 20110914 |