CN200942765Y - Automobile emergency braking device and differential relay valve thereof - Google Patents
Automobile emergency braking device and differential relay valve thereof Download PDFInfo
- Publication number
- CN200942765Y CN200942765Y CN 200620096828 CN200620096828U CN200942765Y CN 200942765 Y CN200942765 Y CN 200942765Y CN 200620096828 CN200620096828 CN 200620096828 CN 200620096828 U CN200620096828 U CN 200620096828U CN 200942765 Y CN200942765 Y CN 200942765Y
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- brake
- drain tap
- relay valve
- piston
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- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
An automobile emergency brake device and a differential relay valve thereof comprise an emergency brake air reservoir, the differential relay valve, a manual valve and a spring brake air chamber; the differential relay valve is connected with a travel sensing device on the brake pedal through a circuit; a normally closed pressure switch is arranged at the communication end of the differential relay valve and the service braking rear loop load sensing valve or the relay valve; the differential relay valve has a balance cavity near the hand control valve, an electromagnetic coil fixed on the valve body, an exhaust valve piston with exhaust valve plate below the electromagnetic coil, an exhaust valve spring between the exhaust valve piston and the valve body, an air inlet valve piston with an air inlet valve seat at the exhaust port of the hand control valve connecting end, the air inlet valve seat corresponding to the exhaust valve plate and forming an exhaust valve, and an air inlet valve spring between the air inlet valve piston and the valve body. When the loop fails after the driving brake, the emergency brake can be controlled through the foot brake valve, so that accidents are effectively avoided, and the driving safety is improved.
Description
Technical field
The utility model belongs to the automobile brake technical field, is specifically related to a kind of emergent brake for automobile and differential type relay valve thereof, and this device and differential type relay valve thereof can inspire brake application by spring when lose efficacy in the loop after service brake automatically.
Background technology
At present, known braking during standstill adopts the automobile of brake application by spring, and the maneuvering system of its emergency brake has adopted the differential type relay valve.Existing differential type relay valve as shown in Figure 3, be communicated with end 41 no air pressure with loop load sensing valve or relay valve after the service brake, and the differential type relay valve is communicated with the emergency brake air tank when holding 42 also not have air pressure, move on piston 43 and the piston 44, valve rod 45 moves under the spring force effect, and air intake valve 46 is closed, and drain tap 49 is opened, air extractor duct 47 communicates with exhausr port 48, and the Pneumatic pipe cleaner of brake application by spring air chamber is crossed the differential type relay valve and discharged.
Adopt the emergency brake control system of existing differential type relay valve, when after the service brake during loop gas circuit et out of order, loop load sensing valve or relay valve are communicated with no air pressure after differential type relay valve and the service brake, at this moment have only the air pressure that bleeds off the differential type relay valve by hand control valve (HCV) that the air pressure of brake application by spring air chamber is discharged, and make corresponding wheel produce braking, but, in emergency circumstances, can not guarantee traffic safety often owing to untimely the having an accident of braking because the people has the certain reaction time.
Summary of the invention
In order to solve that chaufeur carries out emergency brake with hand control valve (HCV) 4 again after loop brake failure after the perception and the problem of having incured loss through delay braking time, it is a kind of when break down in the loop after service brake that the utility model provides, emergency brake device that can start automatically and apace and differential type relay valve thereof, effectively avoid the generation of contingency, improve traveling security.
The utility model emergent brake for automobile and differential type relay valve thereof, comprise the emergency brake air tank, the differential type relay valve that is communicated with by loop load sensing valve after gas circuit and emergency brake air tank, the service brake or relay valve, the hand control valve (HCV) of connection between emergency brake air tank and differential type relay valve, and the brake application by spring air chamber that communicates with the differential type relay valve, wherein, the differential type relay valve links to each other with stroke sensing device on the brake pedal by circuit; Loop load sensing valve or relay valve are communicated with end after differential type relay valve and the service brake normally closed pressure switch; The differential type relay valve has counter balance pocket near be communicated with end with hand control valve (HCV), on the counter balance pocket upper body, be fixed with magnet coil, there is the drain tap piston of band drain tap sheet the magnet coil below, the drain tap spring is arranged between drain tap piston and valve body, the air intake valve piston of bringing the air valve gate seat into is arranged in the exhaust ports with the hand control valve (HCV) coupling end, the air inlet valve gate seat is corresponding with the drain tap sheet and form drain tap, and the air intake valve spring is arranged between air intake valve piston and valve body.
Exportable and the linear voltage of brake-pedal travel of stroke sensing device on the brake pedal.
During the normal operation of loop, normally closed pressure switch disconnects after the service brake, the magnet coil access failure, and drain tap is in the closed position under the effect of drain tap spring; When the loop gas circuit breaks down after the service brake, loop load sensing valve or relay valve are communicated with the no air pressure of end after differential type relay valve and the service brake, normally closed pressure switch is still closed, step on brake pedal, magnet coil is connected, the drain tap piston is subjected to the magnet coil the suction-combining force and moves up, the drain tap spring is compressed, move up under the effect of air intake valve piston intake valve spring thereupon, air intake valve is closed air inlet, and drain tap is opened subsequently, and the counter balance pocket internal gas pressure is discharged by exhausr port, the Pneumatic pipe cleaner of brake application by spring air chamber is crossed the differential type relay valve and is discharged, and the spring air chamber produces and the corresponding braking force of pedal stroke the corresponding wheel drg.When magnet coil the suction-combining force, spring pressure and air pressure made the drain tap piston reach balance, drain tap was closed once again, formed the air pressure of keeping balance in the counter balance pocket.Magnet coil voltage difference forms corresponding different air pressure during balance.
In sum, the utility model beneficial effect is as follows:
The differential type relay valve links to each other with stroke sensing device on the brake pedal by circuit, and when lost efficacy in loop after the service brake, with regard to the may command emergency brake, braking is in time effectively avoided the generation of contingency, has improved traveling security by the foot brake valve.
Below by the specific embodiment the utility model is described further.
Description of drawings
Fig. 1 is a differential type relay valve structural representation;
Fig. 2 is the emergency brake device scheme drawing;
Fig. 3 is existing differential type relay valve structural representation.
The specific embodiment
Referring to Fig. 1 and Fig. 2, loop load sensing valve or relay valve 2 are communicated with end 1a after differential type relay valve 1 and the service brake normally closed pressure switch 3; Be communicated with the inner chamber upper body place of holding 1b with hand control valve (HCV) 4 near differential type relay valve 1 and be fixed with magnet coil 5, there is the drain tap piston 6 of band drain tap sheet 7 magnet coil 5 belows, drain tap spring 13 is arranged between drain tap piston 6 and valve body, at exhausr port 9 places the air intake valve piston 10 of bringing air valve gate seat 11 into is arranged with hand control valve (HCV) 4 coupling ends, air inlet valve gate seat 10 and drain tap sheet 6 corresponding and formation drain taps 14 have air intake valve spring 11 between air intake valve piston 12 and valve body.
Referring to Fig. 2, the present embodiment emergent brake for automobile, comprise emergency brake air tank 15, by gas circuit and emergency brake air tank 15, the differential type relay valve 1 that loop load sensing valve or relay valve 2 are communicated with after the service brake, the hand control valve (HCV) 4 of connection between emergency brake air tank 15 and differential type relay valve 1, and the brake application by spring air chamber 16 that communicates with differential type relay valve 1, wherein, differential type relay valve 1 links to each other with stroke sensing device 18 on the brake pedal 17 by circuit, stroke sensing device on the brake pedal 17 18 exportable with the linear voltages of brake pedal 17 strokes.
During the normal operation of loop, normally closed pressure switch 3 disconnects after the service brake, magnet coil 5 access failures, and drain tap 14 is in the closed position under the effect of drain tap spring 13; When the loop gas circuit breaks down after the service brake, loop load sensing valve or relay valve 2 are communicated with end 1a after differential type relay valve 1 and the service brake does not have air pressure, normally closed pressure switch is still closed, step on brake pedal 17, magnet coil 5 is connected, drain tap piston 6 is subjected to the suction-combining force of magnet coil 5 and moves up, drain tap spring 13 is compressed, air intake valve piston 10 under air intake valve spring 11 effect also with on move, air intake valve 8 is closed air inlet, drain tap 14 is opened subsequently, counter balance pocket 20 internal gas pressures are discharged by exhausr port 9, the Pneumatic pipe cleaner of brake application by spring air chamber 16 is crossed differential type relay valve 1 and is discharged, and brake application by spring air chamber 16 produces and the corresponding braking force of brake pedal 17 strokes the corresponding wheel drg.When magnet coil 5 the suction-combining forces, drain tap spring 13 pressure and counter balance pocket 20 internal gas pressures made drain tap piston 6 reach balance, drain tap 14 was closed once again, formed the air pressure of keeping balance in the counter balance pocket 20.Magnet coil 5 voltage differences form corresponding different air pressure in the counter balance pocket 20 during balance.
In sum, the present embodiment beneficial effect is as follows:
Differential type relay valve 1 links to each other with stroke sensing device 18 on the brake pedal 17 by circuit, when lost efficacy in loop after the service brake, with regard to the may command emergency brake, braking in time by the foot brake valve, effectively avoid the generation of contingency, improved traveling security.
Claims (3)
1, a kind of emergent brake for automobile, comprise the emergency brake air tank, the differential type relay valve that is communicated with by loop load sensing valve after gas circuit and emergency brake air tank, the service brake or relay valve, the hand control valve (HCV) of connection between emergency brake air tank and differential type relay valve, and the brake application by spring air chamber that communicates with the differential type relay valve, it is characterized in that: described differential type relay valve links to each other with stroke sensing device on the brake pedal by circuit, and loop load sensing valve or relay valve are communicated with end normally closed pressure switch is arranged after described differential type relay valve and the described service brake; Described differential type relay valve has counter balance pocket near be communicated with end with hand control valve (HCV), on described counter balance pocket upper body, be fixed with magnet coil, there is the drain tap piston of band drain tap sheet described magnet coil below, between described drain tap piston and valve body the drain tap spring is arranged, the air intake valve piston of bringing the air valve gate seat into is arranged in the exhaust ports with described hand control valve (HCV) coupling end, the air inlet valve gate seat is corresponding with the drain tap sheet and form drain tap, and the air intake valve spring is arranged between air intake valve piston and valve body.
2, emergent brake for automobile according to claim 1 is characterized in that: the exportable and linear voltage of brake-pedal travel of the stroke sensing device on the described brake pedal.
3, emergent brake for automobile differential type relay valve is characterized in that: loop load sensing valve or relay valve are communicated with end after described differential type relay valve and the service brake normally closed pressure switch; Described differential type relay valve has counter balance pocket near be communicated with end with hand control valve (HCV), on described counter balance pocket upper body, be fixed with magnet coil, there is the drain tap piston of band drain tap sheet described magnet coil below, between described drain tap piston and valve body the drain tap spring is arranged, the air intake valve piston of bringing the air valve gate seat into is arranged in the exhaust ports with described hand control valve (HCV) coupling end, the air inlet valve gate seat is corresponding with the drain tap sheet and form drain tap, and the air intake valve spring is arranged between air intake valve piston and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620096828 CN200942765Y (en) | 2006-05-21 | 2006-05-21 | Automobile emergency braking device and differential relay valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620096828 CN200942765Y (en) | 2006-05-21 | 2006-05-21 | Automobile emergency braking device and differential relay valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200942765Y true CN200942765Y (en) | 2007-09-05 |
Family
ID=38717392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620096828 Expired - Lifetime CN200942765Y (en) | 2006-05-21 | 2006-05-21 | Automobile emergency braking device and differential relay valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200942765Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390375A (en) * | 2011-08-23 | 2012-03-28 | 中国北方车辆研究所 | Wheeled vehicle emergency braking device |
| CN108025733A (en) * | 2016-07-25 | 2018-05-11 | 韩胜优 | Brake apparatus and method |
| CN109532805A (en) * | 2018-11-26 | 2019-03-29 | 中联重科股份有限公司 | Crane braking system, automatic positioning system and crane |
-
2006
- 2006-05-21 CN CN 200620096828 patent/CN200942765Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390375A (en) * | 2011-08-23 | 2012-03-28 | 中国北方车辆研究所 | Wheeled vehicle emergency braking device |
| CN102390375B (en) * | 2011-08-23 | 2013-12-18 | 中国北方车辆研究所 | Wheeled vehicle emergency braking device |
| CN108025733A (en) * | 2016-07-25 | 2018-05-11 | 韩胜优 | Brake apparatus and method |
| CN109532805A (en) * | 2018-11-26 | 2019-03-29 | 中联重科股份有限公司 | Crane braking system, automatic positioning system and crane |
| CN109532805B (en) * | 2018-11-26 | 2021-02-26 | 中联重科股份有限公司 | Crane braking system, automatic positioning system and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20140429 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140429 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: DONGFENG TRUCKS Co.,Ltd. Patentee after: RENHE AUTOMOTIV Co.,Ltd. SUZHOU Address before: Shiyan City, Hubei province 442001 City Road No. 9 Patentee before: DONGFENG MOTER Co.,Ltd. Patentee before: RENHE AUTOMOTIV Co.,Ltd. SUZHOU |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070905 |
|
| EXPY | Termination of patent right or utility model |