CN2587729Y - Relay valve for vehicle - Google Patents
Relay valve for vehicle Download PDFInfo
- Publication number
- CN2587729Y CN2587729Y CN 01267875 CN01267875U CN2587729Y CN 2587729 Y CN2587729 Y CN 2587729Y CN 01267875 CN01267875 CN 01267875 CN 01267875 U CN01267875 U CN 01267875U CN 2587729 Y CN2587729 Y CN 2587729Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- relay piston
- relay
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a relay valve for a vehicle, which is designed for solving the problem that the existing synchronous emergency relay valve has a relative long braking off time. The utility model is provided with an upper casing body, a valve body, and a lower valve cover, wherein, the upper casing body is covered on the valve body, and a hollow cavity is formed; the interior of the hollow cavity is provided with a relay piston of which the middle is provided with two coaxial layers of sidewalls; the interior of the hollow cavity which the relay piston is arranged in is fixedly provided with a columnar valve core which extends into a center hole on an upper board surface of the valve body; the lower part of the valve core is a tubular valve. A hollow cavity which is formed between the inside wall of the relay piston and the upper board surface of the valve body is communicated with a quick release valve on the side wall of the valve body. A hollow cavity which is formed between the inside wall and outer wall of the relay piston and the upper board surface of the valve body is provided with a one-way valve which is communicated with the atmosphere; a braking interface which is arranged on the valve body is communicated with the hollow cavity through another one-way valve. The utility model has the advantages of sensitive braking and braking off and can be applied to the braking of trailer and semi-trailers.
Description
Technical field:
The utility model relates to a kind of emergency relay valve, relates to a kind of being used on trailer and the superimposed trailer more specifically, the servo brake valve of control brake and releasing braking.
Background technology:
Relay valve for vehicle is by dual-chamber brake control brake and removes the servo brake valve of braking; It is furnished with air tank separately, the emergency braking function when having the infrabar value of the braking of limiting and pipeline fracture.
The servo brake valve that is used on trailer and the superimposed trailer commonly used now has emergency relay valve and two kinds of synchronous emergency relay valve.Because the shortcoming that urgent servo brake valve exists brake to lag behind.Making trailer clash into main car phenomenon takes place.Emergency relay valve is improved in the brake terms of hysteresis synchronously, but has long shortcoming of brake off time.
Emergency relay valve reaches in China and has obtained widespread use all over the world synchronously, and is all using China various places, Fig. 1-Fig. 4 is the constructional drawing of synchronous emergency relay valve, below in conjunction with accompanying drawing (description of drawings is seen below) to the structure of synchronous emergency relay valve, make to be used as and briefly introduce.
(1) braking of emergency relay valve synchronously
During brake, give the inflation of 40 chambeies by dual-chamber brake through pilot piping incoming interface 29, relay piston 3 is moved downward by 40 chamber gaseous tensions, with 4 times push pipe shapes of relay piston 3 bonded assembly cylindrical spools valve 50 (be that the centre hole that cylindrical spool 4 is blocked Tube-like valve 50 moves downward, 45 chambeies are communicated with 41 chambeies), make the pressure gas in 45 chambeies, 44 chambeies and the air tank (interface 32 logical air tanks) go into 41 chambeies, 43 chambeies, push away rapid release valve epithelium 17, close rapid release valve 19,, brake to brake repair room through brake interface 31 by brake repair room control.At this moment the gas in 46 chambeies enters atmosphere by the air extractor vent 28 on the 46 chamber walls.
(2) shortcoming of synchronous emergency relay valve brake off process and existence is when braking is removed, 40 chamber gases are discharged to dual-chamber brake through pilot piping from interface 29, make that pressure reduces in 40 chambeies, so, relay piston 3 is upward movement under the elastic force effect of 41 chamber gaseous tensions and spring 24, cylindrical spool 4 is separated with Tube-like valve 50, close the passage in 45 chambeies and 41 chambeies simultaneously, 41 chambeies, gas in 43 chambeies and the brake repair room is from the centre hole of Tube-like valve 50, discharge through exhausr port 15, at this moment 41 chamber air pressure sharply descend, but because pilot piping is longer, 40 chambeies still have residual air to produce back pressure at short notice, and 41 chambeies of the area on relay piston 3 are more less than 40 chambeies, relay piston 3 upward movements are slowed down, or stop halfway, move to reversing sense when perhaps being subjected to 40 back lining pressure pressures big.Braking for the second time all can appear under the both of these case, because the cavity that one- way cock 16 and 42 chambeies are main cars uses for gas filed passage of air tank and infrabar brake, when brake, the air pressure of 45 chambeies, 44 chambeies and air tank is all descended to some extent, at this moment one-way cock 16 is opened bigger, the air pressure in 42 chambeies is also descended simultaneously, at this moment under the effect of balance spring 26, can promote emergency piston 2 upward movement slightly.Tube-like valve 50 is also with emergency piston 2 upward movements; If relay piston 3 can withstand Tube-like valve 50 at Halfway Stopping and its bonded assembly cylindrical spool 4 of upward movement, 45 chambeies are communicated with 41 chambeies, to the brake repair room inflation, secondary braking appears again.Though can shift relay piston 3 onto top dead point during secondary braking, make cylindrical spool 4 break away from Tube-like valves 50, make the gas of 41 chambeies, 43 chambeies and brake repair room from the centre hole of Tube-like valve 50, discharge and brake off through exhausr port 15.But spun out the time of brake off.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned defective, when a kind of brake is provided braking sensitive, brake off is Relay valve for vehicle efficiently.
For achieving the above object, the utility model Relay valve for vehicle adopts following technical scheme: this Relay valve for vehicle comprises upper shell, valve body and bottom flange, has interface on the sidewall of upper shell; Upper shell is buckled in and forms a cavity on the upper face of valve body, in this cavity, be provided with relay piston, be provided with seal ring between the lateral wall of relay piston and the madial wall of upper shell, it is coaxial and have the relay piston madial wall in gap with the relay piston lateral wall also to be shaped on lateral wall with relay piston in the cavity of relay piston, and the upper face of the madial wall of relay piston, lateral wall and valve body surrounds a cavity; Be shaped on the annular wall that in the relay piston cavity, stretches on the upper face of valve body, be shaped on circular groove on the medial surface of annular wall, seal ring is housed in the circular groove, the madial wall of relay piston parallels setting with annular wall on the valve body upper face, forms a cavity between the madial wall of relay piston and valve body upper face; Have centre hole on the upper face of valve body, at relay piston cavity internal fixation a cylindrical spool is arranged, cylindrical spool stretches in the centre hole of valve body upper face, and has the gap between the centre hole of cylindrical spool and valve body upper face; In the valve cavity of valve body lower portion, cylindrical spool below, spacing is arranged be provided with Tube-like valve with cylindrical spool; The sidewall of valve body is provided with rapid release valve, and the cavity that forms between relay piston madial wall and the valve body upper face communicates with rapid release valve; Have brake interface on valve body, brake interface communicates with the passage of rapid release valve; On the chamber wall of the cavity that forms between madial wall, lateral wall and the valve body upper face of relay piston, be shaped on the logical atmosphere of check valve; The cavity that forms between madial wall, lateral wall and the valve body upper face of brake interface by check valve and relay piston is connected; The radius of the face that the madial wall of described relay piston is relative with the annular wall of valve body upper face in the first half greater than the latter half, and the first half and the latter half even thickness of the upper face annular wall opposite face of the madial wall of relay piston and valve body, when relay piston was positioned at topmost, there was the gap in the seal ring of adorning on the latter half of relay piston madial wall and the valve body upper face annular wall medial surface; When relay piston moves downward, when the seal ring of adorning on the annular wall medial surface on the first half of the madial wall of relay piston and the valve body upper face is positioned at same horizontal surface, the first half of relay piston madial wall seals mutually with the sealing circle, and when relay piston is positioned at topmost, when the seal ring of adorning on the annular wall medial surface on the lower part of the madial wall of relay piston and the valve body upper face is positioned at same horizontal surface, the latter half of relay piston madial wall at this level point to the length of the first half length less than described cylindrical spool and Tube-like valve spacing.
Description of drawings:
Fig. 1 is the upward view of synchronous emergency relay valve
Fig. 2 is the A-A cutaway view of synchronous emergency relay valve shown in Figure 1
Fig. 3 is the B-B cutaway view of synchronous emergency relay valve shown in Figure 1
Fig. 4 is a synchronous emergency relay valve D-D cutaway view shown in Figure 1
Fig. 5 is the upward view of the utility model Relay valve for vehicle
Fig. 6 is the A-A cutaway view of Relay valve for vehicle shown in Figure 5
Fig. 7 is the B-B cutaway view of Relay valve for vehicle shown in Figure 5
Fig. 8 is the C-C cutaway view of Relay valve for vehicle shown in Figure 5
Fig. 9 is the D-D cutaway view of Relay valve for vehicle shown in Figure 5
The specific embodiment:
As shown in Figure 6, this Relay valve for vehicle comprises upper shell 1, valve body 6 and bottom flange 18, has interface 29 on the sidewall of upper shell 1; Upper shell 1 is buckled in and forms a cavity on the upper face 55 of valve body 6, in this cavity, be provided with relay piston 3, be provided with seal ring 7 between the lateral wall 56 of relay piston 3 and the madial wall of upper shell 1, it is coaxial also to be shaped on the lateral wall 56 with relay piston 3 in the cavity of relay piston 3, and there is the madial wall 51 in gap with relay piston lateral wall 56, the length of the madial wall 51 of relay piston 3 is greater than its lateral wall 56, the upper face 55 of the madial wall 51 of relay piston 3 and lateral wall 56 and valve body 6 surrounds a cavity 46, be shaped on the annular wall 57 that in relay piston 3 cavitys, stretches on the upper face 55 of valve body 6, be shaped on circular groove on the medial surface of annular wall 57, seal ring 8 is housed in the circular groove, the madial wall 51 of relay piston 3 parallels setting with annular wall 57 on valve body 6 upper faces 55, forms a cavity 41 between the madial wall 51 of relay piston 3 and valve body 6 upper faces 55; Have centre hole on the upper face 55 of valve body 6, at the cavity internal fixation of relay piston 3 cylindrical spool 4 is arranged, cylindrical spool 4 stretches in the centre hole of valve body 6 upper faces 55, and has the gap between the centre hole of cylindrical spool 4 and valve body 6 upper faces 55; In the valve cavity of valve body 6 bottoms, cylindrical spool 4 below, spacing is arranged be provided with Tube-like valve 50 with cylindrical spool 4.
As Fig. 5, Fig. 7, Fig. 8, shown in Figure 9, the sidewall of valve body 6 is provided with rapid release valve 19, and the cavity 41 that forms between the madial wall 51 of relay piston 3 and valve body 6 upper faces 55 communicates with rapid release valve 19.Have brake interface 31 on valve body 6, brake interface 31 communicates with the passage of rapid release valve 19; On the chamber wall of the cavity 46 that forms between the upper face 55 of the madial wall of the madial wall 51 of relay piston 3, lateral wall 56, upper shell 1 and valve body 6, be shaped on check valve 21 logical atmosphere; Brake interface 31 is connected by the cavity 46 that forms between the upper face 55 of madial wall 51, lateral wall 56 and the valve body 6 of check valve 22 and relay piston 3.
And for example shown in Figure 6, the radius of the face that the annular wall 57 of the madial wall 51 of described relay piston 3 and valve body 6 upper faces 55 is relative in the first half 61 greater than the latter half 71, and the madial wall 51 of relay piston 3 and the first half 61 and the latter half 71 even thickness of upper face 55 annular wall 57 opposite faces of valve body 6, when relay piston 3 is positioned at topmost, the latter half of relay piston 3 madial walls 51 71 and valve body 6 upper faces " there is the gap in the seal ring 8 adorned on annular wall 57 medial surfaces; When relay piston 3 moves downward, when the seal ring of adorning on annular wall 57 medial surfaces on the first half 61 of the madial wall 51 of relay piston 3 and valve body 6 upper faces 55 8 is positioned at same horizontal surface, the first half 61 of relay piston 3 madial walls 51 seals mutually with sealing circle 8, and when relay piston 3 is positioned at topmost, when the seal ring of adorning on annular wall 57 medial surfaces on the latter half 71 of the madial wall 51 of relay piston 3 and valve body 6 upper faces 55 8 is positioned at same horizontal surface, the latter half 71 of relay piston 3 madial walls 51 at this level point to the length of the first half 61 length less than described cylindrical spool 4 and Tube-like valve 50 spacings.
Below an explanation is done in the braking of the utility model Relay valve for vehicle and the process of brake off:
(1) braking of the utility model Relay valve for vehicle
When main car glancing impact, interface 29 inflations that dual-chamber brake is given automobile-used brake activation valve through pilot piping are gone into 40 chambeies promotion relay piston 3 and are moved downward.Because of at this moment relay piston 3 madial walls 51 do not contact with seal ring 8,41,46 chambeies are communicated with, its gap director 10 no friction drags, after relay piston 3 moves downward 10 length, relay piston 3 madial walls 51 produce cliding friction with seal ring 8 contacts and sealing, and 41 chambeies are sealed mutually with 46 chambeies.At this moment will contact with Tube-like valve 50 with relay piston 3 bonded assembly cylindrical spools 4, continue to finish miles of relative movement (distance between cylindrical spool 4 and the Tube-like valve 50) 11 (11＞10), cylindrical spool 4 downward ejector sleeve shape valves 50, connect 41 chambeies and 45 chambeies, make the gas in the air tank cross 44 chambeies, 45 chambeies, 41 chambeies, 43 chambeies through interface 32, push away rapid release valve epithelium 17, close rapid release valve 19, gas brakes to brake repair room through brake interface 31.Simultaneously, the gas in 46 chambeies moves downward with relay piston 3, opens one-way cock 22, enters interface 31 to the brake repair room brake.Because 41 chambeies are more less than 40 chambeies to the gas area of thrust surface of relay piston 3, relay piston 3 continues to move downward, and 41 chamber gas pressure intensities occur and is higher than 40 chambeies, and just the braking pressure of trailer is greater than the braking pressure of main car, be that Relay valve for vehicle brake is rapider, this point when brake also clearly.
(2) braking of the utility model Relay valve for vehicle is removed
During brake off, 40 chamber gas backstreamings are discharged from dual-chamber brake, this moment, relay piston 3 was subjected to 41 chamber gaseous tensions and action of the spring upward movement (at this moment the check valve 21 in 46 chambeies is opened and replenished atmosphere to 46 chambeies), when cylindrical spool 4 leaves Tube-like valve 50,45 chambeies and 41 chamber relative closures, the madial wall 51 of following seal ring 8 and relay piston 3 disengages friction drag and reduces, 41 chamber gases flow into 46 chambeies from 10 long gap locations, check valve 21 in 46 chambeies is closed, at this moment check valve 22 two sides between 46 chambeies and the brake interface 31 are stressed quite, 46 chamber gases also produce relay piston 3 and upward pressure, because 41, the area sum of 46 chambeies on relay piston 3 approximates the elastic force that 40 chambeies also have spring 24, and the piston upward speed is increased.Though A chamber pilot piping is long, exhaust is slow slightly, and the A chamber also has a small amount of residual air to produce back pressure in the short time, is that the pressure in B, the F chamber is big after all, still can be pushed into top dead point to relay piston 3.Pressure gas in B, H chamber and the brake repair room is from the centre hole of Tube-like valve 50, through exhausr port 15 discharges simultaneously, and rapid release valve epithelium 17 is also washed open by air-flow simultaneously, and the gas in the brake repair room is discharged from rapid release valve 19, rapidly brake off.
Though after the brake of the utility model Relay valve for vehicle, the air pressure in air tank air pressure and C, G, E chamber also decreases, balance spring 26 can promote emergency piston 2 upward movement slightly, and at this moment relay piston 3 has been pushed into top dead point, so can not produce secondary braking.
In the utility model Relay valve for vehicle and the prior art synchronously emergency relay valve have two places different: 1. the utility model is established check valve 21 logical atmosphere in the F chamber, check valve 22 logical brake interfaces 31; And emergency relay valve F chamber only communicates with aperture 28 with atmosphere synchronously.2. Relay valve for vehicle seal ring 8 and relay piston 3 sealing contact when brake has the long gap of h during brake off, and B, F chamber are communicated.And synchronous emergency relay valve: seal ring 8 and relay piston 3 are sealing contact all the time, and B, F chamber are not communicated; The utility model Relay valve for vehicle for ease of understanding, has kept the mark of Relay valve for vehicle same structure part among synchronous emergency relay valve and Fig. 5-Fig. 9 with emergency relay valve is identical synchronously in Fig. 1-Fig. 4 on other structure.
Claims (1)
1, a kind of Relay valve for vehicle comprises upper shell (1), valve body (6) and bottom flange (18), has interface (29) on the sidewall of upper shell (1); Upper shell (1) is buckled in the upper face (55) of valve body (6) and goes up cavity of formation, in this cavity, be provided with relay piston (3), be provided with seal ring (7) between the lateral wall (56) of relay piston (3) and the madial wall of upper shell (1), it is coaxial also to be shaped on the lateral wall (56) with relay piston (3) in the cavity of relay piston (3), and there is the madial wall (51) in gap with relay piston lateral wall (56), the upper face (55) of the madial wall (51) of relay piston (3) and lateral wall (56) and valve body (6) surrounds a cavity (46), be shaped on the annular wall (57) that in relay piston (3) cavity, stretches on the upper face (55) of valve body (6), be shaped on circular groove on the medial surface of annular wall (57), seal ring (8) is housed in the circular groove, the madial wall (51) of relay piston (3) parallels setting with annular wall (57) on valve body (6) upper face (55), forms a cavity (41) between the madial wall (51) of relay piston (3) and valve body (6) upper face (55); On the upper face (55) of valve body (6), have centre hole, cavity internal fixation at relay piston (3) has a cylindrical spool (4), cylindrical spool (4) stretches in the centre hole of valve body (6) upper face (55), and has the gap between the centre hole of cylindrical spool (4) and valve body (6) upper face (55); In the valve cavity of valve body (6) bottom, the below of cylindrical spool (4) spacing is arranged is provided with Tube-like valve (50) with cylindrical spool (4); The sidewall of valve body (6) is provided with rapid release valve (19), and the cavity (41) that forms between relay piston (3) madial wall (51) and valve body (6) upper face (55) communicates with rapid release valve (19); Have brake interface (31) on valve body (6), brake interface (31) communicates with the passage of rapid release valve (19); It is characterized in that: the chamber wall of the cavity (46) that forms between the upper face (55) of madial wall (51), lateral wall (56) and the valve body (6) of relay piston (3) is shaped on check valve (21); Brake interface (31) is connected by check valve (22) and described cavity (46); The radius of the face that the madial wall (51) of described relay piston (3) is relative with the annular wall (57) of valve body (6) upper face (55) in the first half (61) greater than the latter half (71), and the first half (61) and the latter half (71) even thickness of upper face (55) annular wall (57) opposite face of the madial wall (51) of relay piston (3) and valve body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267875 CN2587729Y (en) | 2001-10-23 | 2001-10-23 | Relay valve for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01267875 CN2587729Y (en) | 2001-10-23 | 2001-10-23 | Relay valve for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2587729Y true CN2587729Y (en) | 2003-11-26 |
Family
ID=33674171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01267875 Expired - Fee Related CN2587729Y (en) | 2001-10-23 | 2001-10-23 | Relay valve for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2587729Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417651A (en) * | 2007-10-23 | 2009-04-29 | 纽约气闸公司 | Stabilized brake control valve |
| CN101927762A (en) * | 2010-09-27 | 2010-12-29 | 屠乐贤 | Three-axle relay valve |
| CN102060010A (en) * | 2010-12-22 | 2011-05-18 | 芜湖盛力制动有限责任公司 | Relay valve of heavy truck brake system |
| CN1799911B (en) * | 2004-12-27 | 2011-08-10 | 纽约气力制动公司 | Relay configuration for an electro-pneumatic train |
| CN101439714B (en) * | 2007-11-19 | 2012-07-04 | 陈仲明 | Synchronous fast exhaust emergency relay valve |
-
2001
- 2001-10-23 CN CN 01267875 patent/CN2587729Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799911B (en) * | 2004-12-27 | 2011-08-10 | 纽约气力制动公司 | Relay configuration for an electro-pneumatic train |
| CN101417651A (en) * | 2007-10-23 | 2009-04-29 | 纽约气闸公司 | Stabilized brake control valve |
| CN101439714B (en) * | 2007-11-19 | 2012-07-04 | 陈仲明 | Synchronous fast exhaust emergency relay valve |
| CN101927762A (en) * | 2010-09-27 | 2010-12-29 | 屠乐贤 | Three-axle relay valve |
| CN102060010A (en) * | 2010-12-22 | 2011-05-18 | 芜湖盛力制动有限责任公司 | Relay valve of heavy truck brake system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02274605A (en) | Elastic body device | |
| CN102182909B (en) | High-pressure gas storage bottle | |
| CN2587729Y (en) | Relay valve for vehicle | |
| CN100439172C (en) | Double pipe electrically-controlled trailer brake valve | |
| CN1699097A (en) | Electrically controlled trailer brake valve | |
| CN206346271U (en) | Post fire hydrant | |
| CN209381979U (en) | A kind of auxiliary brake valve | |
| CN2818263Y (en) | Electrically-controlled double-pipeline brake valve of trailer | |
| CN203868199U (en) | Dual-diaphragm brake air chamber with auxiliary parking device | |
| CN2709772Y (en) | Protection device for preventing overfilling of liquified petroleum gas cylinder | |
| CN200942765Y (en) | Automobile emergency braking device and differential relay valve thereof | |
| CN202024073U (en) | Gas bottle for high-pressure gas storage | |
| CN85108757A (en) | Brake control valve | |
| CA2109379C (en) | High pressure valve for railway car brake control valve device | |
| CN2858342Y (en) | Air-charging and air-discharging system of tyre | |
| CN2823072Y (en) | Quick discharging valve for automobile braking air cahmber | |
| CN2633682Y (en) | Normally open booster electromagnetic valve for automobile anti-blocking brake system | |
| CN201721442U (en) | Relay valve | |
| CN2516372Y (en) | Automatic pressure control apparatus for anti-explosion of vehicle tyre | |
| CN211314923U (en) | Braking device for multi-axle vehicle | |
| CN2035003U (en) | Automatic hydraulic booster pump | |
| CN211055116U (en) | Relay valve with advanced braking structure | |
| CN2745817Y (en) | Quick releasing valve of automobile brake air chamber | |
| CN217502666U (en) | Three-way valve and brake-by-wire system | |
| CN2860904Y (en) | Tyre decompression alarm device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |