CN102529937B - Parking brake valve for front axle - Google Patents

Parking brake valve for front axle Download PDF

Info

Publication number
CN102529937B
CN102529937B CN201210054919XA CN201210054919A CN102529937B CN 102529937 B CN102529937 B CN 102529937B CN 201210054919X A CN201210054919X A CN 201210054919XA CN 201210054919 A CN201210054919 A CN 201210054919A CN 102529937 B CN102529937 B CN 102529937B
Authority
CN
China
Prior art keywords
valve
hollow
port
spring
air inlet
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.)
Active
Application number
CN201210054919XA
Other languages
Chinese (zh)
Other versions
CN102529937A (en
Inventor
柯寿乾
柯友敏
杨刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN KESDA VEHICLE BRAKE SYSTEM (GROUP) CO Ltd
Original Assignee
SICHUAN KESDA VEHICLE BRAKE SYSTEM (GROUP) CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SICHUAN KESDA VEHICLE BRAKE SYSTEM (GROUP) CO Ltd filed Critical SICHUAN KESDA VEHICLE BRAKE SYSTEM (GROUP) CO Ltd
Priority to CN201210054919XA priority Critical patent/CN102529937B/en
Publication of CN102529937A publication Critical patent/CN102529937A/en
Application granted granted Critical
Publication of CN102529937B publication Critical patent/CN102529937B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention relates to a parking brake valve for a front axle, which is applied to parking brake of a large-sized vehicle. The valve comprises a valve body and is characterized in that an air inlet, an exhaust port, a first output port, a second output port and a controlled air inlet are formed on the valve body; the valve body has a valve body inner cavity; a hollow fixed embedded part, a hollow piston, a piston spring, an air inlet valve, an air inlet valve spring, a hollow pusher, an exhaust valve and an exhaust valve spring arearranged in the valve body inner cavity; a hollow pusher inward protruding part and a hollow pusher outward protruding part are arranged at the other end of the hollow pusher; the exhaust valve has an exhaust valve lower-end depressing part; the hollow piston has a hollow piston pushing end and a hollow piston controlled end; the air inlet is communicated with the first and the second output ports through the valve ports of the air inlet valve; the first and the second output ports are communicated with the exhaust port through the valve port of the exhaust valve; and the controlled air inlet is communicated with the valve body inner cavity at the hollow piston controlled end.

Description

Parking brake valve for front axle
Technical field
The parking brake valve for front axle that uses while the present invention relates to a kind of full-sized car braking during standstill.
Background technology
(being usually said air-cut-off break) that existing full-sized car braking during standstill is normally realized by energy storage spring brake chamber and hand control valve (HCV); Because energy-storage spring braking air chamber structure is complicated, volume is larger, so this structure is only applicable in full-sized car, back axle.And automobile front axle is in order to control the needs of motor turning, the air chamber that adopts is obviously less than normal with respect to middle back axle air chamber volume, energy stroage spring can't be installed carry out braking during standstill, namely existing full-sized car propons can only carry out service brake, can't utilize the atmospheric air chamber that energy stroage spring can be installed to carry out braking during standstill.In the braking during standstill of ramp, the braking force due to back axle braking during standstill in only relying on is not enough and accidents caused usually.
Technical personnel has been done a large amount of effort aspect braking during standstill, make every effort to strengthen the safety performance of automobile parking braking.For example Chinese utility model patent discloses a kind of electromagnetic braking valve for vehicle No. ZL94209042.X, and this electromagnetic braking valve for vehicle belongs to the brake valve of car class.By upper and lower casing, valve, and the spring plug screw form, the stiff piston that has mandrel to connect in chamber, control gas circuit with magnet coil, the core iron startup mandrel of bottom and make automobile brake, some braking, semi-brake, simple in structure, easy to manufacture, easy for installation, lightweight, long service life, price be low, operate steadily, without impacting, servo-actuated property is good, work is sensitive reliable, hand braking system be can replace, medium-sized, heavy motor vehicle, trailer, superimposed trailer emergency brake system are widely used in.But this brake activation valve also only can be assisted and be controlled back axle braking in the full-sized car with energy stroage spring, still fails to solve the braking during standstill problem of full-sized car propons without energy stroage spring.
In addition, powering-off state, in case occur, the as easy as rolling off a log safety misadventure that causes in the automotive operation way in the i.e. braking of electromagnetic braking valve for vehicle outage.Therefore, there is defect in existing braking valve for vehicle aspect safety performance, and lacks the propons holding brake device.
In order to strengthen vehicle safety performance, be badly in need of providing a kind of utilization to have pressure gas pipeline mature technology now, do not changing under the front axle steering system prerequisite, increase the parking brake valve for front axle of car load braking during standstill power.
Summary of the invention
The purpose of this invention is to provide the existing pressure gas pipeline mature technology of a kind of utilization, do not changing under the front axle steering system prerequisite, increase the parking brake valve for front axle of car load braking during standstill power.
Basic conception of the present invention is: automobile parking braking is normally realized by energy storage spring brake chamber and hand control valve (HCV) at present, i.e. usually said air-cut-off break.Existing large-scale, medium-sized, heavy motor vehicle generally adopts pressure gas to control automobile brake, and the pressure gas deposit in gas tank,, even the loss of power accident occurs, also can utilize the pressure gas of deposit to continue to control brake system of car, and safety is ensured.Because this structure is only applicable in automobile, back axle, usually accidents caused because braking force is not enough in the braking during standstill of ramp., in order to strengthen vehicle safety performance, must find a kind of more advanced way to increase car load braking during standstill power.The application just is to provide a kind of parking brake valve for front axle, thereby increases car load braking during standstill power.And parking brake valve for front axle is mainly to make automobile allow automobile front axle also produce braking in the Parking process by hand control valve (HCV), thereby increases automobile parking braking power, strengthens vehicle safety.Its structure and principle of work are that this valve has admission port, delivery port, exhausr port and controls gas port; Vehicle is when braking during standstill, and gas, by the air inlet open air intake valve, enters the propons compressed air brake cylinder by brake piping, thereby makes propons enter braking mode after delivery port; Vehicle is when driving states, control gas and enter the piston lower end through controlling gas port, make the piston upward movement, close rapidly air intake valve, cut off the passage of admission port and delivery port, at this moment, drain tap is opened, and makes the pressurized air in the propons brake repair room, by pipeline and drain tap, enter atmosphere through exhausr port, thereby make the propons brake off.
specifically, parking brake valve for front axle of the present invention has valve body, it is characterized in that offering admission port on described valve body, exhausr port, the first delivery port, the second delivery port and control admission port, described valve body has body cavity, be provided with fixedly inserts of hollow in described body cavity, hollow piston, piston spring, air inlet valve, inlet valve spring, the hollow yoke frame, blow off valve and exhaust valve spring, described air inlet valve activity is nested with in blow off valve, the valve port of described air inlet valve extends from blow off valve, and with admission port, adapt, described hollow yoke frame one end is nested with in air inlet valve, the described hollow yoke frame other end has hollow yoke frame inwardly protruding section and hollow yoke frame outwardly convex section, described inlet valve spring one end contacts with air inlet valve, the described inlet valve spring other end contacts with hollow yoke frame inwardly protruding section, described blow off valve has blow off valve lower end recess, described hollow yoke frame outwardly convex section is positioned at blow off valve lower end recess, the valve port of described blow off valve and hollow fixedly inserts one end adapt, described exhaust valve spring one end contacts with body cavity, the described exhaust valve spring other end contacts with blow off valve, described hollow piston has hollow piston pushing end and hollow piston controlled end, described hollow piston pushing end pass hollow fixedly inserts contact with the hollow yoke frame, described piston spring one end and hollow fixedly inserts contact, the described piston spring other end contacts with the hollow piston controlled end, described admission port is connected with the first delivery port and the second delivery port by the valve port of air inlet valve, described the first delivery port and the second delivery port are connected with exhausr port by the valve port of blow off valve, described control admission port is connected with the body cavity of hollow piston controlled end.
While using parking brake valve for front axle of the present invention, just can first the valve body of parking brake valve for front axle of the present invention be connected with extraneous gas circuit pipeline, namely allow admission port be connected with extraneous admission line, allow the first delivery port be connected delivery port and be connected with extraneous left and right propons brake system pipeline respectively, allow and control admission port and be connected with extraneous control gas pipe line.
When needs parking brake valve for front axle braking during standstill of the present invention, first allow the air pressure of controlling admission port eliminate, and then hollow piston is under the jacking force of piston spring, allow the hollow piston pushing end be in to blow off valve away from state.At this moment, the valve port of blow off valve and hollow is inserts one end in contact fixedly, the passage between sealing exhausr port and the first delivery port, the second delivery port.At this moment, allow admission port enter pressurized air, overcome the jacking force of inlet valve spring under compressed-air actuated strength, allow air inlet valve along exhaust valve spindle to moving down, and open the valve port of air inlet valve.The pressurized air that enters from admission port outputs to extraneous left and right propons brake system from the first delivery port and the second delivery port respectively through the valve port of air inlet valve, and braking during standstill is carried out in brake to propons.
When needs parking brake valve for front axle of the present invention is removed braking during standstill, while allowing vehicle enter driving states, first allow the control admission port enter pressurized air and act on the hollow piston controlled end, hollow piston is under compressed-air actuated promotion, and the jacking force that overcomes piston spring allows the hollow piston pushing end contact with the hollow yoke frame.At this moment, under the promotion of hollow piston, the hollow yoke frame promotes inlet valve spring, allows inlet valve spring pushing tow air inlet valve move to the admission port direction,, until allow the valve port of air inlet valve seal admission port, cut off the passage between admission port and the first delivery port, the second delivery port.Hollow piston continues simultaneously the compression piston spring and continues simultaneously to promote inlet valve spring by the hollow yoke frame and move up, until hollow yoke frame outwardly convex section and blow off valve lower end recess carry out pushing tow, and then start to overcome the jacking force of exhaust valve spring, the valve port direction of blow off valve to air inlet valve promoted.Here, when hollow yoke frame outwardly convex section continues the pushing tow blow off valve, also allow valve port and the hollow of blow off valve fixedly disengage (valve port of blow off valve is opened) in the contact site of inserts one end, namely open the passage between the first delivery port and the second delivery port and exhausr port, allow pressurized air in the propons brake system of extraneous left and right respectively through the first delivery port, the second delivery port, pass through again the valve port of blow off valve, enter atmosphere by exhausr port finally, thereby remove propons brake braking during standstill.
Parking brake valve for front axle of the present invention is under the prerequisite of not changing existing full-sized car propons pneumatic braking system, utilize pressure gas to control the propons brake system and realize parking braking function, a kind of new technology path is provided, represented the new development tendency of full-sized car parking brake valve for front axle, lay a good foundation for the development of full-sized car propons emergency brake system, strengthened the reliability of automobile brake.Allow chaufeur carry out braking during standstill to automobile front axle in to the rear axle in vehicle braking during standstill by hand control valve (HCV), realized car load complete set braking during standstill, strengthened safety performance and the unfailing performance of automobile.
Compared with the aforementioned existing similar products, parking brake valve for front axle utilization of the present invention has pressure gas pipeline mature technology now, is not changing under the front axle steering system prerequisite, increases braking force, has strengthened safety.
Content of the present invention is further described with the following Examples, but content of the present invention is not limited only to content related in embodiment.
Description of drawings
Fig. 1 is the structural representation that in embodiment, parking brake valve for front axle carries out vehicle Parking state.
Fig. 2 is the structural representation that in embodiment, parking brake valve for front axle carries out vehicle driving states.
The specific embodiment
embodiment 1: as shown in Fig. 1~2, parking brake valve for front axle described in the present embodiment has valve body 1, it is characterized in that offering admission port 2 on described valve body 1, exhausr port 3, the first delivery port 4, the second delivery port 5 and control admission port 6, described valve body 1 has body cavity 7, be provided with fixedly inserts 8 of hollow in described body cavity 7, hollow piston 9, piston spring 10, air inlet valve 11, inlet valve spring 12, hollow yoke frame 13, blow off valve 14 and exhaust valve spring 15, described air inlet valve 11 activities are nested with in blow off valve 14, the valve port 16 of described air inlet valve extends from blow off valve 14, and with admission port 2, adapt, described hollow yoke frame 13 1 ends are nested with in air inlet valve 11, described hollow yoke frame 13 other ends have hollow yoke frame inwardly protruding section 17 and hollow yoke frame outwardly convex section 18, described inlet valve spring 12 1 ends contact with air inlet valve 11, described inlet valve spring 12 other ends contact with hollow yoke frame inwardly protruding section 17, described blow off valve 14 has blow off valve lower end recess 19, described hollow yoke frame outwardly convex section 18 is positioned at blow off valve lower end recess 19, the valve port 20 of described blow off valve and hollow fixedly inserts 8 one ends adapt, described exhaust valve spring 15 1 ends contact with body cavity 7, described exhaust valve spring 15 other ends contact with blow off valve 14, described hollow piston 9 has hollow piston pushing end 21 and hollow piston controlled end 22, described hollow piston pushing end 21 pass hollow fixedly inserts 8 contact with hollow yoke frame 13, described piston spring 10 1 ends and hollow fixedly inserts 8 contact, described piston spring 10 other ends contact with hollow piston controlled end 22, described admission port 2 is connected with the first delivery port 4 and the second delivery port 5 by the valve port 16 of air inlet valve, described the first delivery port 4 and the second delivery port 5 are connected with exhausr port 3 by the valve port 20 of blow off valve, described control admission port 6 is connected with the body cavity of hollow piston controlled end 22.

Claims (1)

1. parking brake valve for front axle, has valve body, it is characterized in that offering admission port on described valve body, exhausr port, the first delivery port, the second delivery port and control admission port, described valve body has body cavity, be provided with fixedly inserts of hollow in described body cavity, hollow piston, piston spring, air inlet valve, inlet valve spring, the hollow yoke frame, blow off valve and exhaust valve spring, described air inlet valve activity is nested with in blow off valve, the valve port of described air inlet valve extends from blow off valve, and with admission port, adapt, described hollow yoke frame one end is nested with in air inlet valve, the described hollow yoke frame other end has hollow yoke frame inwardly protruding section and hollow yoke frame outwardly convex section, described inlet valve spring one end contacts with air inlet valve, the described inlet valve spring other end contacts with hollow yoke frame inwardly protruding section, described blow off valve has blow off valve lower end recess, described hollow yoke frame outwardly convex section is positioned at blow off valve lower end recess, the valve port of described blow off valve and hollow fixedly inserts one end adapt, described exhaust valve spring one end contacts with body cavity, the described exhaust valve spring other end contacts with blow off valve, described hollow piston has hollow piston pushing end and hollow piston controlled end, described hollow piston pushing end pass hollow fixedly inserts contact with the hollow yoke frame, described piston spring one end and hollow fixedly inserts contact, the described piston spring other end contacts with the hollow piston controlled end, described admission port is connected with the first delivery port and the second delivery port by the valve port of air inlet valve, described the first delivery port and the second delivery port are connected with exhausr port by the valve port of blow off valve, described control admission port is connected with the body cavity of hollow piston controlled end.
CN201210054919XA 2012-03-05 2012-03-05 Parking brake valve for front axle Active CN102529937B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210054919XA CN102529937B (en) 2012-03-05 2012-03-05 Parking brake valve for front axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210054919XA CN102529937B (en) 2012-03-05 2012-03-05 Parking brake valve for front axle

Publications (2)

Publication Number Publication Date
CN102529937A CN102529937A (en) 2012-07-04
CN102529937B true CN102529937B (en) 2013-11-13

Family

ID=46338326

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210054919XA Active CN102529937B (en) 2012-03-05 2012-03-05 Parking brake valve for front axle

Country Status (1)

Country Link
CN (1) CN102529937B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105151033B (en) * 2015-10-08 2018-10-02 威伯科汽车控制系统(中国)有限公司 The detection method of preceding bridge parking foot brake valves, braking system and parking braking function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245961A1 (en) * 1982-12-11 1984-06-14 Bosch Gmbh Robert Brake valve for dual circuit pneumatic brake systems, particularly for vehicles
CN2516410Y (en) * 2001-12-06 2002-10-16 李彦波 Double-cavity booster relay valve and its brake pipe system
CN201086709Y (en) * 2007-09-07 2008-07-16 山东明水汽车配件厂 Advancing relay valve
CN102062234A (en) * 2010-12-22 2011-05-18 芜湖盛力制动有限责任公司 Matching valve of heavy truck braking system
CN202439683U (en) * 2012-03-05 2012-09-19 四川柯世达汽车制动系统集团有限公司 Front axle parking brake valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245961A1 (en) * 1982-12-11 1984-06-14 Bosch Gmbh Robert Brake valve for dual circuit pneumatic brake systems, particularly for vehicles
CN2516410Y (en) * 2001-12-06 2002-10-16 李彦波 Double-cavity booster relay valve and its brake pipe system
CN201086709Y (en) * 2007-09-07 2008-07-16 山东明水汽车配件厂 Advancing relay valve
CN102062234A (en) * 2010-12-22 2011-05-18 芜湖盛力制动有限责任公司 Matching valve of heavy truck braking system
CN202439683U (en) * 2012-03-05 2012-09-19 四川柯世达汽车制动系统集团有限公司 Front axle parking brake valve

Also Published As

Publication number Publication date
CN102529937A (en) 2012-07-04

Similar Documents

Publication Publication Date Title
CN201970990U (en) Master brake valve with electric-control and gas-control double-loop signals
CN101508288B (en) Air-pressure electric-control auxiliary brake device
CN101580059A (en) Electronic control pneumatic brake system
CN202439683U (en) Front axle parking brake valve
CN102529937B (en) Parking brake valve for front axle
CN102562852B (en) Clutch slave cylinder for hybrid electric vehicles
CN105151033A (en) Front-axle parking foot brake valve, brake system and detection method of parking brake functions
CN201816583U (en) Integrated valve with double relay valves
CN201516803U (en) Improved clutch operating system for automobile
CN201961307U (en) Relay valve of heavy truck brake system
CN201646701U (en) Articulated type tractor
CN201989784U (en) Differential relay valve of heavy-duty truck brake system
CN203485908U (en) Braking main valve of air inflation brake
CN203005403U (en) Pneumatic control type assistant braking device for truck
CN200942765Y (en) Automobile emergency braking arrangement and differential type relay valve thereof
CN201261462Y (en) Duplex relay valve
CN202091411U (en) Energy-storage piston type spring braking suction and exhaust structure device in air chamber
CN202011391U (en) Multi-axle adjustable quick-release synchronous emergency relay valve
CN202243432U (en) Electric auxiliary braking system of electric automobile
CN202987118U (en) A novel blow-out brake system
CN205168480U (en) Commercial vehicle hill start auxiliary system air -operated controller solenoid valve
CN201494414U (en) Pneumatic type car washing device
CN201816577U (en) Gas cap oil type brake system for tractor
CN201264611Y (en) Automatic parking braking device for locomotive
CN202545644U (en) Clutch slave cylinder for hybrid electric vehicle

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model