CN103963769B - A kind of tractor steeraxle relay valve - Google Patents
A kind of tractor steeraxle relay valve Download PDFInfo
- Publication number
- CN103963769B CN103963769B CN201410193334.5A CN201410193334A CN103963769B CN 103963769 B CN103963769 B CN 103963769B CN 201410193334 A CN201410193334 A CN 201410193334A CN 103963769 B CN103963769 B CN 103963769B
- Authority
- CN
- China
- Prior art keywords
- valve
- main valve
- tractor
- work chamber
- steeraxle
- 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
Abstract
The present invention relates to a kind of tractor steeraxle relay valve, including main valve, the main valve includes upper and lower casing, main valve stem, main valve diaphragm assembly, air valve assembly, on the top of main valve stem, one boosting piston is set, and three work chamber circulated for pressure regulation gas are formed in upper shell, corresponding to this structure, the tractor steeraxle relay valve also includes voltage stabilizing adjusting apparatus and power assisting device.Tractor brakes front steering axle and obtains normal adjustment by installing and using the present invention, makes the braking pressure of output adjustable between 0.10 ~ 0.80 MPa, brakes front steering axle and both produces brake force, rostral can be exchanged again and slides into row effective brake；The braking distance of vehicle is set to shorten more than 10%, and brake force is balanced, slows down fast, improves safety factor of travel, reduces the generation of accident.
Description
Technical field
The present invention relates to automobile brake technical field, and in particular to a kind of tractor steeraxle relay valve.
Background technology
In China, the freight volume of tractor truck accounts for more than the 70% of long-distance transport total amount.In the braking system of tractor truck
In system, because front steering axle and master cylinder distance are near, reaction speed is fast during braking, causes front steering axle to brake in advance, and system
Power is excessive.Front steering axle air pressure reaches 0.25 MPa during zero load braking, and general vehicle front steering axle can just reach and drag death situation
State；During heavy duty braking, because the payload mass for distributing to front steering axle is less than normal, supply gas pressure reaches 0.38 MPa, front steering axle
Will reach and drag death situation state.Even if ABS system is equipped with, because original relay valve brake pressure can not be adjusted, it is impossible to limitation braking
Pressure, output pressure and brake force also can be excessive.Because semitrailer and tractor are not one overall, semitrailer and traction when braking
Appearance of vehicle is also easy to produce oblique angle, and direction out of control causes the major traffic accidents of u-turn sideslip or side dumper.
According to investigations, because the input and output pressure ratio of existing relay valve is 1:1, and can not adjust, it is impossible to depressurize, therefore
In the semitrailer of existing operation, front steering axle braking there is no normal adjustment and use, and only be adjusted when car is examined, after inspection car
Release, brake pipe is blocked, or the degree that brake chamber gap is adjusted to almost not brake, it is difficult to be adjusted to produce
Brake force, can make tractor that the braking effect for breakking away is prevented in u-turn again.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of braking pressure and can be adjusted between 0.10 ~ 0.80 MPa
Tractor steeraxle relay valve.
In order to solve the above technical problems, the technical scheme is that：A kind of tractor steeraxle relay valve, including one
Main valve, the main valve includes lower house, upper shell, main valve stem, main valve diaphragm assembly, air valve assembly；Wherein, on the top of main valve stem
A boosting piston is set with, a passage is provided with positioned at the main valve stem of boosting piston upper position；Main valve diaphragm assembly, main valve
The internal chamber wall of bar, boosting piston and upper shell constitutes three work chamber for the circulation of pressure regulation gas, wherein the 3rd work chamber
It is not communicated with the first work chamber, the second work chamber, the first work chamber is connected with the second work chamber by passage；
The air admission hole being connected with the 3rd work chamber is provided with the top of upper shell；The tractor steeraxle relay valve also include with
Voltage stabilizing adjusting apparatus that first work chamber is connected and the power assisting device being connected with the air admission hole.
Tractor makes front steering axle brake in advance using after tractor steeraxle relay valve of the invention, and braking
The problems such as power is excessive is resolved, and brakes front steering axle and obtains normal adjustment, makes the braking pressure of output 0.10 ~ 0.80 million
It is adjustable between handkerchief, brake front steering axle and both produce brake force, rostral can be exchanged again slides into row effective brake；Make the braking of vehicle
Distance Shortened more than 10%, and brake force is balanced, slows down fast, improves safety factor of travel, reduces the generation of accident.
Brief description of the drawings
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the front view profile of tractor steeraxle relay valve of the present invention.
Fig. 2 is the main valve front view profile of tractor steeraxle relay valve of the present invention.
Fig. 3 is the voltage stabilizing adjusting apparatus front view profile of tractor steeraxle relay valve of the present invention.
Fig. 4 is the power assisting device front view profile of tractor steeraxle relay valve of the present invention.
Mark in accompanying drawing is represented respectively.
1 main valve, 4 lower houses, 5 upper shells, 101 main valve stems, 102 the 3rd operating rooms, 103 air admission holes, 104 sealing rings, 105
Second operating room, 10 diaphragm assemblies, 106 diaphragms, 107 diaphragm catch, 108 locking nuts, 109 return springs, 110 air admission holes,
11 air valve assemblies, 111 main valves, 112 valve springs, 113 valve back-up rings, 114 valve back-up rings, 115 sealing rings, 116 valve cards
Spring, 117 ports, 118 chambers, 119 first work chamber, 120 boosting pistons, 121 passages；
2 voltage stabilizing adjusting apparatus, 5-2 housings, 201 intake and exhaust channels, lid on 202,204 steam vents, 205 adjustment bolts,
206 adjustment springs, 207 packing rings, 208 diaphragm catch, 209 diaphragms, 210 valve rods, 211 technique plugs, 212 valves, 213 valve bullets
Spring, 214 inlet suction ports, 215 dust caps；
3 power assisting devices, 5-3 housings, 301 jump rings, 302 inlet channels, 303 valve springs, 304 intake and exhaust channels, 305 valves
Door, 306 pistons, 307 adjust pads, 308 glands, 309 valve rods, 310 adjustment springs, 311, dust cap, 312 steam vents, 313 are consolidated
Determine bolt.
Specific embodiment
As depicted in figs. 1 and 2, the lower house 4 of the tractor steeraxle relay valve and the bolt of upper shell 5 constitute valve
Chamber, main valve stem 101 is placed in valve pocket；The lower surface of main valve stem 101 is in contact with the air valve assembly 11 for being placed in the bottom of lower house 4；
Air valve assembly 11 includes main valve 111, valve spring 112, valve back-up ring 113 and 114, sealing ring 115, valve jump ring 116；It is main
Valve film assembly 10 is set on main valve stem 101, is fitted between lower house 4 and upper shell 5, and the diaphragm assembly 10 is by diaphragm
106th, upper and lower two panels diaphragm catch 107, locking nut 108 is constituted.Top of the fixed cover of boosting piston 120 loaded on main valve stem 101,
Also can be constructed integrally with main valve stem 101.In order to increase sealing, sealing ring is installed on the inside and outside wall of boosting piston 120
104；The inwall of boosting piston 120, main valve stem 101, diaphragm assembly 10 and upper shell 5, collectively forms three work chamber
（102、105、119）, wherein, the 3rd work chamber 102 and the first work chamber 119, second in the top of boosting piston 120
Work chamber 105 is not communicated with, the passage that the first work chamber 119 and the second work chamber 105 pass through setting on main valve stem 101
121 are connected；The venthole 103 being connected with the 3rd work chamber 102 is provided with the top of upper shell 5.Set on lower house 4
Be equipped with the air admission hole 110 of external gas receiver, and external brake cylinder port 117, the holes is separately positioned on relatively
Both sides, its communicate with cut-off controlled by the open and close of air valve assembly 11.
As shown in figures 1 and 3, the side of the upper shell 5 of main valve 1 is provided with voltage stabilizing adjusting apparatus 2, the voltage stabilizing adjusting apparatus
2 include the housing 5-2 integrally set with upper shell 5, upper lid 202, adjustment bolt 205, adjustment spring 206, diaphragm assembly, valve
Bar 210, valve 212, valve spring 213, intake and exhaust channel 201, inlet suction port 214.Upper lid 202 and housing 5-2 bolts, adjust
Adjustable being spirally connected of whole bolt 205 is arranged on lid 202, and diaphragm assembly is fixed and is fitted between lid 202 and housing 5-2, valve
Bar 210 is movably arranged in housing, and adjustment spring 206 is sleeved on valve rod 210, the upper and lower surface of diaphragm assembly respectively with adjustment
Spring 206 and valve rod 210 are contacted, and valve rod 210 is contacted with valve 212, and valve 212 has spring 213；Wherein diaphragm assembly bag
Include packing ring 207, diaphragm catch 208, diaphragm 209.The external master cylinder of inlet suction port 214, during work, the gas of master cylinder leads to
The intake and exhaust channel 201 that inlet suction port 214 is flowed on housing 5-2 is crossed, the first work chamber 119 of main valve 1 is eventually entered into, to master
Valve rod 101 exerts a force, so as to adjust the atmospheric pressure value of steam vent 117.
As shown in Figure 1 and Figure 4, the power assisting device 3 for being set in the opposite side of the upper shell 5 of main valve 1, including with 5 one-tenth of upper shell
The housing 5-3 being wholely set, inlet channel 302, intake and exhaust channel 304, jump ring 301, valve spring 303, valve 305, piston
306th, adjust pad 307, gland 308, valve rod 309, adjustment spring 310, dust cap 311, steam vent 312, fixing bolt 313.
Wherein inlet channel 302 is communicated with the bottom of piston 306, and when master cylinder is supplied to inlet channel 302, gas atmosphere can be pushed away
Moved in piston 306；Exhaust passage 304 is arranged on the top position of the shoulder of piston 306.When being moved on piston 306, valve 305
Disengaged with piston 306, valve is opened, the gas from inlet channel 302 can flow to exhaust passage by valve 305
The connection of 304, i.e. inlet channel 302 and exhaust passage 304 and cut-off are the open and close by valve 305 to be controlled.
Gas flows to the air admission hole 103 on main valve 1 from exhaust passage 304 by external pipeline, hence into the 3rd work chamber 102,
And then the boosting piston 120 on main valve stem 101 is acted on, finally the air pressure to port 117 is adjusted.Gas is from exhaust
Passage 304 flows to the mode of air admission hole 103, is to realize that the problem can also be in upper shell 4 by external pipeline in embodiment
Upper setting passage, realizes the connection of exhaust passage 304 and air admission hole 103.
The operation principle of voltage stabilizing adjusting apparatus of the present invention：When master cylinder is supplied to air admission hole 214, inlet channel 201
Pressure be less than setting value when, valve rod 210 adjust spring 206 in the presence of move down, valve 212 is opened, now, master cylinder
Gas flow air admission hole 214, flow to passage 201 by valve 212 and the first work chamber 119 for being communicated and the second work
Chamber 105, under the gas pressure of this gas, main valve stem 101 and main valve diaphragm assembly 10 are moved down, and promote the valve of air valve assembly 11
Door 111 is moved down, i.e., air valve assembly 11 is opened, and now the gases at high pressure from gas receiver enter air admission hole 110, flow through valve 111
Port 117 is flowed to, leads to brake cylinder；When the pressure of inlet channel 201 reaches adjustment setting value, valve 212 is closed,
Prevent the gas of inlet suction port 214 from the first work chamber 119 and the second work chamber that continue towards passage 201 and communicated
105, at this moment voltage stabilizing work.When releasing braking, because inlet suction port 214 is without air pressure, valve rod 210 is in levelling spring 206
Moved down under effect, valve 212 is in opening, the gas discharge of above-mentioned chamber, main valve stem 101 and main valve diaphragm assembly
Moved on 10, main valve 111 is closed, 117 gas discharge releases braking.
The operation principle of power assisting device of the present invention is as follows：During brake hard, master cylinder is supplied to power assisting device air admission hole 302
Gas, when pressure meets or exceeds setting value, piston 306 overcomes in the presence of gas and moved on the active force of adjustment spring 310,
Valve 305 is opened, and gas flows to exhaust passage 304 by valve 305, then by being connected to exhaust passage 304 and air admission hole 103
External passage, flow to the work chamber 102 of air admission hole 103 and the 3rd.And now, due to the effect of left side voltage stabilizing adjusting apparatus,
Pressure in first work chamber 119 and the second work chamber 105 is the setting value of voltage stabilizing adjusting apparatus, so, is lived in power-assisted
The upper and lower surface of plug just has a pressure difference.Under the differential pressure action, main valve stem 101 is promoted to move down so that the pressure of steam vent 117
Power increased.When the air pressure that master cylinder gives 302 increases, the pressure of port 117 increases ratio also with increase
It is relevant with the area ratio of diaphragm catch with boosting piston.
It is exemplified below：If left side voltage stabilizing adjusting apparatus adjusted value is 0.2 MPa, power assisting device adjusted value is 0.4 million
Handkerchief, then during brake hard, the pressure difference of the 3rd work chamber 102 and the second work chamber 105 is 0.2 MPa, if boosting piston
Area is 43% with the area ratio of main valve stem diaphragm catch, then when the 3rd work chamber's pressure often increases by 0.1 MPa, port
117 pressure is increased by 0.043 MPa.
In the above-described embodiments, preferred forms of the invention are described, it is obvious that in invention structure of the invention
Under think of, many changes can be still made, such as make diaphragm assembly into rubber piston structure, the voltage stabilizing adjusting apparatus and power-assisted are filled
Putting can exchange into other valve class devices for realizing corresponding function, and all above-mentioned deformations fall within protection scope of the present invention.
Claims (7)
1. a kind of tractor steeraxle relay valve, it includes a main valve（1）, the main valve（1）Including lower house（4）, upper shell
（5）, main valve stem（101）, main valve diaphragm assembly（10）, air valve assembly（11）；It is characterized in that：In main valve stem（101）Top
It is set with a boosting piston（120）, positioned at boosting piston（120）The main valve stem of upper position（101）It is provided with a passage
（121）；The diaphragm assembly（10）, main valve stem（101）, boosting piston（120）With upper shell（5）Constitute for the circulation of pressure regulation gas
The first work chamber（119）, the second work chamber（105）, the 3rd work chamber（102）, wherein the 3rd work chamber（102）
With the first work chamber（119）, the second work chamber（105）It is not communicated with, the first work chamber（119）With the second work chamber
（105）By passage（121）It is connected；In upper shell（5）Top be provided with and the 3rd work chamber（102）What is be connected enters
Stomata（103）；The tractor steeraxle relay valve also includes and first work chamber（119）The voltage stabilizing adjustment being connected
Device（2）And with the air admission hole（103）The power assisting device being connected（3）.
2. tractor steeraxle relay valve according to claim 1, it is characterised in that：The voltage stabilizing adjusting apparatus（2）
Including housing（5-2）, upper lid（202）, adjustment bolt（205）, valve rod（210）, diaphragm assembly, adjustment spring（206）, valve
（212）, valve spring（213）, inlet suction port（214）；Wherein inlet suction port（214）External master cylinder, in housing（5-2）On
It is provided with and main valve（1）The first work chamber（119）The intake and exhaust channel being connected（201）.
3. tractor steeraxle relay valve according to claim 2, it is characterised in that：The voltage stabilizing adjusting apparatus（2）
Housing（5-2）With upper shell（5）It is integral to set.
4. tractor steeraxle relay valve according to claim 1, it is characterised in that：The power assisting device（3）Including
Housing（5-3）, gland（308）, piston（306）, valve rod（309）, adjustment spring（310）, spring（303）；In housing（5-3）On
It is provided with inlet channel（302）And exhaust passage（304）；The inlet channel（302）External master cylinder, the exhaust passage
（304）With the main valve（1）On air admission hole（103）It is connected.
5. tractor steeraxle relay valve according to claim 4, it is characterised in that：The power assisting device（3）Shell
Body（5-3）With upper shell（5）It is integral to set.
6. tractor steeraxle relay valve according to claim 1, it is characterised in that：The boosting piston（120）Can
With main valve stem（101）It is integral to set.
7. tractor steeraxle relay valve according to claim 1, it is characterised in that：In boosting piston（120）It is interior
Outside wall surface is provided with sealing ring（104）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193334.5A CN103963769B (en) | 2014-05-09 | 2014-05-09 | A kind of tractor steeraxle relay valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193334.5A CN103963769B (en) | 2014-05-09 | 2014-05-09 | A kind of tractor steeraxle relay valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103963769A CN103963769A (en) | 2014-08-06 |
| CN103963769B true CN103963769B (en) | 2017-05-31 |
Family
ID=51233906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410193334.5A Expired - Fee Related CN103963769B (en) | 2014-05-09 | 2014-05-09 | A kind of tractor steeraxle relay valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103963769B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944889A (en) * | 2018-08-31 | 2018-12-07 | 山东康健汽车配件科技股份有限公司 | A kind of dedicated relay valve of freight steering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364818A (en) * | 1973-02-13 | 1974-08-29 | Scovill Manufacturing Co | Relay valve assembly |
| CN202806734U (en) * | 2012-10-03 | 2013-03-20 | 胡大勇 | Adjustable type three-bridge simultaneous emergency relay valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3033620A1 (en) * | 1980-09-06 | 1982-04-22 | Robert Bosch Gmbh, 7000 Stuttgart | TRAILER CONTROL VALVE |
| CN2251515Y (en) * | 1996-02-07 | 1997-04-09 | 何国良 | Advance brake valve |
| CN101870289B (en) * | 2010-06-02 | 2011-11-30 | 李彦波 | Flexible brake power-assisted relay valve |
| CN203246460U (en) * | 2013-05-27 | 2013-10-23 | 梁山康健汽车配件有限公司 | Trailer control valve |
| CN203920727U (en) * | 2014-05-09 | 2014-11-05 | 山东康健汽车配件有限公司 | A kind of tractor truck steeraxle relay valve |
-
2014
- 2014-05-09 CN CN201410193334.5A patent/CN103963769B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364818A (en) * | 1973-02-13 | 1974-08-29 | Scovill Manufacturing Co | Relay valve assembly |
| CN202806734U (en) * | 2012-10-03 | 2013-03-20 | 胡大勇 | Adjustable type three-bridge simultaneous emergency relay valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103963769A (en) | 2014-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104309602B (en) | A kind of relay valve with empty and load brake-cylinder pressure adjustment function | |
| CN106882174A (en) | Relay valve and the electronic brake system based on relay valve | |
| CN105966385B (en) | A kind of EBD electronic valves | |
| CN203920727U (en) | A kind of tractor truck steeraxle relay valve | |
| CN206841417U (en) | Relay valve and the electronic brake system based on relay valve | |
| CN204136976U (en) | A kind of relay valve with empty and load brake-cylinder pressure adjustment function | |
| CN103963769B (en) | A kind of tractor steeraxle relay valve | |
| CN105905096A (en) | Gas combination control valve used for hydraulic retarder | |
| CN102336187B (en) | Hand brake valve of rubber-tire vehicle | |
| US4284307A (en) | Hydraulic pressure control valve assembly for automotive hydraulic brake system | |
| CN105946827B (en) | A kind of stepless voltage transformation device, relay valve and ABS combine relay valve | |
| CN106051213B (en) | A kind of rolling stock alleviation adjustment valve | |
| CN205841852U (en) | A kind of rolling stock is with alleviating adjustment valve | |
| CN105946829B (en) | A kind of multifunctional stepless potential device and ABS combine relay valve | |
| CN201687991U (en) | High-frequency proportional solenoid valve | |
| CN102062234B (en) | Matching valve of heavy truck braking system | |
| US3472562A (en) | Fluid pressure brake control valve | |
| CN105946828B (en) | A kind of potential device, automatic pressure-transforming regulation device and ABS combine relay valve | |
| CN201992123U (en) | Matching valve for brake system of heavy truck | |
| CN203805884U (en) | Relay valve for tractor steering axle | |
| CN107939890A (en) | A kind of gas spring piston component sealing structure | |
| CN208947307U (en) | A kind of dedicated relay valve of freight steering | |
| CN205801094U (en) | A kind of EBD electronic valve | |
| CN205769261U (en) | A kind of input air pressure configuration pressure regulation responding device and ABS combine relay valve | |
| CN204020861U (en) | A kind of hydraulic brake booster for vehicle and brake pressure distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20190509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |