CN202657018U - Parking braking system - Google Patents

Parking braking system Download PDF

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Publication number
CN202657018U
CN202657018U CN 201220200320 CN201220200320U CN202657018U CN 202657018 U CN202657018 U CN 202657018U CN 201220200320 CN201220200320 CN 201220200320 CN 201220200320 U CN201220200320 U CN 201220200320U CN 202657018 U CN202657018 U CN 202657018U
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CN
China
Prior art keywords
air
gas circuit
valve
parking
links
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
Application number
CN 201220200320
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Chinese (zh)
Inventor
杨宁
祁俊荣
薛现振
钟林春
魏东海
陈启迪
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.)
Zhengzhou Yutong Bus Co Ltd
Original Assignee
Zhengzhou Yutong Bus 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 Zhengzhou Yutong Bus Co Ltd filed Critical Zhengzhou Yutong Bus Co Ltd
Priority to CN 201220200320 priority Critical patent/CN202657018U/en
Application granted granted Critical
Publication of CN202657018U publication Critical patent/CN202657018U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a parking braking system which comprises a parking air cylinder and an air controlled reversing valve. The air controlled reversing valve comprises a control port and an air inlet, the braking system further comprises a reserve air cylinder, an air inlet of the reserve air cylinder is connected with an air outlet of the parking air cylinder or an air outlet of an air compressor, an air outlet of the reserve air cylinder is respectively connected with the control port and the air inlet of the air controlled reversing valve, a check valve is arranged on an air inflation circuit, a normal close valve is arranged an air discharge circuit, a first two-way check valve is arranged on the air discharge circuit connected with the control port of the air controlled reversing valve, and a second two-way check valve is arranged on the air discharge circuit connected with the air inlet of the air controlled reversing valve. When the air compressor stops working or a parking air circuit is ultra-low in air pressure, and the parking braking system cannot remove spring parking braking, the normal close valve is opened, high pressure gas in the reserve air cylinder is injected in a rear axle braking chamber to remove the spring parking braking, and the parking braking system brings convenience to trailer supporting and moving.

Description

A kind of emergency brake system
Technical field
The utility model relates to the emergency brake system of automobile.
Background technology
Known passenger vehicle and lorry adopt Pneumatic braking system more, its parking brake loop is mainly by the Parking air receiver, hand control valve (HCV), differential relay valve and back axle compressed air brake cylinder Parking chamber consist of, an air extractor duct of Parking air receiver is communicated with by gas circuit with the hand control valve (HCV) admission port, its another air extractor duct is communicated with the admission port of differential relay valve by gas circuit, the air extractor duct of hand control valve (HCV) is communicated with by gas circuit with the control mouth of differential relay valve, when engine compressor quits work or the braking during standstill gas-circuit gas pressure is crossed when low, energy stroage spring works in the compressed air brake cylinder Parking chamber, promote braking air chamber push rod and act on drg, realize braking during standstill, at this moment, emergency brake system can't be removed brake application by spring, if vehicle damage needs trailer, then needs external gas source, overcoming energy stroage spring power in the Parking chamber, during operating cost and maintenance cost higher.
Summary of the invention
The purpose of this utility model is to provide a kind of emergency brake system, quits work or the Parking gas-circuit gas pressure is crossed when low at air compressor to solve emergency brake system of the prior art, and emergency brake system can't be removed the problem of spring braking during standstill.
In order to address the above problem, a kind of emergency brake system of the present utility model, the Pneumatic reversal valve that comprises the Parking air receiver and be used for when removing Parking Parking air receiver and back axle brake repair room are communicated with, this Pneumatic reversal valve comprises control mouth and admission port, this brake system also comprises air receiver for subsequent use, the admission port of this air receiver for subsequent use links to each other with described Parking air receiver air extractor duct or air compressor air extractor duct by the inflation gas circuit, the air extractor duct of this air receiver for subsequent use links to each other with admission port with the control mouth of described Pneumatic reversal valve respectively by the venting gas circuit, be provided be used to the check valve that prevents gas from described air receiver for subsequent use to described Parking air receiver or air compressor refluxes in described inflation gas circuit, be provided with for quitting work at air compressor or emergency brake system pressure openable normal closed gate can not remove Parking the time in described venting gas circuit, the described venting gas circuit that links to each other with the control mouth of described Pneumatic reversal valve is provided with the first double-way check valve, the first double-way check valve have two respectively with hand control valve (HCV) air extractor duct and the described normal closed gate air extractor duct admission port that links to each other by described venting gas circuit and the air extractor duct that links to each other by described venting gas circuit with described Pneumatic reversal valve control mouthful, the described venting gas circuit that links to each other with the admission port of described Pneumatic reversal valve is provided with the second double-way check valve, the second double-way check valve have two respectively with described Parking air receiver air extractor duct and described normal closed gate air extractor duct by venting the gas circuit admission port that links to each other and the air extractor duct that links to each other with described Pneumatic reversal valve admission port.
Described Pneumatic reversal valve is differential relay valve.
Described venting gas circuit comprises the main gas circuit that is communicated with described air receiver air extractor duct for subsequent use and two branch road gas circuits that are communicated with this main gas circuit, the other end of one of them described branch road gas circuit links to each other with the control mouth of described differential relay valve, the other end of another described branch road gas circuit links to each other with the admission port of described differential relay valve, described normal closed gate is positioned on the main gas circuit, and described the first double-way check valve and described the second double-way check valve lay respectively on the corresponding described branch road gas circuit.
The admission port of described hand control valve (HCV) is provided with the connection gas circuit, and this connects gas circuit and is communicated with described inflation gas circuit between described check valve and described Parking air receiver.
Described normal closed gate is normally closed solenoid valve.
The utility model Parking air receiver is when normal the use, to the unidirectional inflation of air receiver for subsequent use, when needs are removed braking during standstill, but air compressor can not be worked or the Parking gas-circuit gas pressure is excessively low, when can not make the energy stroage spring return with the releasing braking during standstill, open normal closed gate, by the high pressure gas in the air receiver for subsequent use Pneumatic reversal valve is opened, and by this Pneumatic reversal valve high pressure gas are filled with the back axle brake repair room to remove the spring braking during standstill, make things convenient for the trailer holder moving, solved in the prior art, emergency brake system quits work or the Parking gas-circuit gas pressure is crossed when low at air compressor, emergency brake system can't be removed the problem of spring braking during standstill, with in the prior art specially on trailer the adapted external gas source remove the spring Parking and compare, operation is very easy.
Description of drawings
Fig. 1 is the schematic diagram of emergency brake system among the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described in detail:
A kind of embodiment of emergency brake system, as shown in Figure 1, comprise Parking air receiver 2, hand control valve (HCV) 6, back axle brake repair room 9,9 ' and be used for when removing Parking Pneumatic reversal valve that Parking air receiver and back axle brake repair room are communicated with, this Pneumatic reversal valve comprises the control mouth, admission port and air extractor duct, this Pneumatic reversal valve is differential relay valve 8, Parking air receiver 2 comprises an admission port that is communicated with air compressor 1 and two air extractor ducts 11,31, this brake system also comprises air receiver 3 for subsequent use, the admission port 12 of this air receiver 3 for subsequent use links to each other with Parking air receiver air extractor duct 31 by inflation gas circuit 23, be provided be used to the check valves 4 that prevent gas 2 backflows from air receiver 3 for subsequent use to the Parking air receiver in inflation gas circuit 23, the admission port 14 of hand control valve (HCV) 6 is provided with and connects gas circuit 27, this connects gas circuit 27 and is communicated with inflation gas circuit 23 between check valve 4 and Parking air receiver 2, and the present embodiment is located at T-pipe joint 32 connections of inflating on the gas circuit 23 by one; The air gate 13 of this air receiver 3 for subsequent use links to each other with admission port 22 with the control mouth 21 of differential relay valve 8 respectively by the venting gas circuit, the venting gas circuit comprises the main gas circuit 24 that links to each other with the air extractor duct of air receiver 3 for subsequent use and two branch road gas circuits 16 that are communicated with this main gas circuit by T- pipe joint 25,20, the other end of one of them branch road gas circuit 16 links to each other with the control mouth 21 of differential relay valve 8, the other end of another branch road gas circuit 20 links to each other with the admission port of differential relay valve 22, be provided with for quitting work at air compressor or emergency brake system pressure openable normal closed gate 5 can not remove Parking the time in venting gas circuit 24, this normal closed gate 5 is normally closed solenoid valve in the present embodiment, normal closed gate 5 is positioned on the main gas circuit 24, branch road gas circuit 16 is provided with the first double-way check valve 10, this first double-way check valve 10 comprises two admission ports 17,18 and air extractor ducts 19, the air extractor duct 19 of this first double-way check valve 10 links to each other with differential relay valve control mouth 21 by corresponding branch road gas circuit 16, an admission port 17 of this first double-way check valve 10 is connected with T-pipe joint 25 by branch road gas circuit 16, and the air extractor duct 15 of hand control valve (HCV) 6 is communicated with another admission port 18 of the first double-way check valve 10 by air guide gas circuit 26; Branch road gas circuit 20 is provided with the second double-way check valve 7, this second double-way check valve 7 comprises two admission ports 28,29 and air extractor ducts 30, the air extractor duct 30 of this second double-way check valve 7 is communicated with differential relay valve admission port 22 by corresponding branch road gas circuit 20, an admission port 29 of this second double-way check valve 7 is communicated with T-pipe joint 25 by corresponding branch road gas circuit 20, and Parking air receiver 2 another air extractor ducts 11 are communicated with another admission port 28 of the second double-way check valve 7 by the air guide gas circuit; Normal closed gate, the first double-way check valve and the second double-way check valve that arranges on the check valve that arranges on air receiver for subsequent use, air inlet gas circuit, the air inlet gas circuit, venting gas circuit and the venting gas circuit consists of the stand-by system in the parking system.
In the present embodiment, Parking air receiver 2 when normal the use to air receiver 3 unidirectional inflations for subsequent use, when needs are removed braking during standstill, but air compressor can not be worked or the Parking gas-circuit gas pressure is excessively low, when can not make the energy stroage spring return with the releasing braking during standstill, have on the trailer signal circuit of this electromagnetic valve energising is opened normally closed solenoid valve, by the valve open of the high pressure gas in the air receiver 3 for subsequent use with differential relay valve 8, this differential relay valve is filled with back axle brake repair room 9 with high pressure gas, in 9 ' to remove the spring braking during standstill, make things convenient for the trailer holder moving, solved in the prior art, emergency brake system quits work or the Parking gas-circuit gas pressure is crossed when low at air compressor, emergency brake system can't be removed the problem of spring braking during standstill, with in the prior art specially on trailer the adapted external gas source remove the spring Parking and compare, operation is very easy.
In other embodiment of the present utility model, different from above-described embodiment is, the admission port of described air receiver for subsequent use links to each other with the air compressor air extractor duct by the inflation gas circuit, and this inflation gas circuit is provided with the check valve that prevents that gas from refluxing from air compressor to the Parking air receiver; In other embodiment of the present utility model, different from above-described embodiment is, the mechanical normal closed valve of manual unlocking in described normal closed gate can also be for prior art.

Claims (5)

1. emergency brake system, the Pneumatic reversal valve that comprises the Parking air receiver and be used for when removing Parking Parking air receiver and back axle brake repair room are communicated with, this Pneumatic reversal valve comprises control mouth and admission port, it is characterized in that: this brake system also comprises air receiver for subsequent use, the admission port of this air receiver for subsequent use links to each other with described Parking air receiver air extractor duct or air compressor air extractor duct by the inflation gas circuit, the air extractor duct of this air receiver for subsequent use links to each other with admission port with the control mouth of described Pneumatic reversal valve respectively by the venting gas circuit, be provided be used to the check valve that prevents gas from described air receiver for subsequent use to described Parking air receiver or air compressor refluxes in described inflation gas circuit, be provided with for quitting work at air compressor or emergency brake system pressure openable normal closed gate can not remove Parking the time in described venting gas circuit, the described venting gas circuit that links to each other with the control mouth of described Pneumatic reversal valve is provided with the first double-way check valve, the first double-way check valve have two respectively with hand control valve (HCV) air extractor duct and the described normal closed gate air extractor duct admission port that links to each other by described venting gas circuit and the air extractor duct that links to each other by described venting gas circuit with described Pneumatic reversal valve control mouthful, the described venting gas circuit that links to each other with the admission port of described Pneumatic reversal valve is provided with the second double-way check valve, the second double-way check valve have two respectively with described Parking air receiver air extractor duct and described normal closed gate air extractor duct by venting the gas circuit admission port that links to each other and the air extractor duct that links to each other with described Pneumatic reversal valve admission port.
2. a kind of emergency brake system according to claim 1, it is characterized in that: described Pneumatic reversal valve is differential relay valve.
3. a kind of emergency brake system according to claim 2, it is characterized in that: described venting gas circuit comprises the main gas circuit that is communicated with described air receiver air extractor duct for subsequent use and two branch road gas circuits that are communicated with this main gas circuit, the other end of one of them described branch road gas circuit links to each other with the control mouth of described differential relay valve, the other end of another described branch road gas circuit links to each other with the admission port of described differential relay valve, described normal closed gate is positioned on the main gas circuit, and described the first double-way check valve and described the second double-way check valve lay respectively on the corresponding described branch road gas circuit.
4. a kind of emergency brake system according to claim 1, it is characterized in that: the admission port of described hand control valve (HCV) is provided with the connection gas circuit, and this connects gas circuit and is communicated with described inflation gas circuit between described check valve and described Parking air receiver.
5. according to claim 1 and 2 or 3 or 4 described a kind of emergency brake systems, it is characterized in that: described normal closed gate is normally closed solenoid valve.
CN 201220200320 2012-05-07 2012-05-07 Parking braking system Expired - Fee Related CN202657018U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220200320 CN202657018U (en) 2012-05-07 2012-05-07 Parking braking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220200320 CN202657018U (en) 2012-05-07 2012-05-07 Parking braking system

Publications (1)

Publication Number Publication Date
CN202657018U true CN202657018U (en) 2013-01-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220200320 Expired - Fee Related CN202657018U (en) 2012-05-07 2012-05-07 Parking braking system

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CN (1) CN202657018U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072561A (en) * 2013-02-07 2013-05-01 郭玉 Parking braking releasing device for automobile
CN105927511A (en) * 2016-06-29 2016-09-07 广西玉柴机器股份有限公司 Emergency energy system and method for air compressor
CN106043259A (en) * 2016-06-27 2016-10-26 中国重汽集团济南动力有限公司 Independent air source parking braking system and operating method
US10137750B2 (en) 2016-02-25 2018-11-27 Bendix Commercial Vehicle Systems Llc Controller and method for controlling a lift axle and air suspension on a trailer
CN112644443A (en) * 2020-12-30 2021-04-13 一汽解放汽车有限公司 Pneumatic-electric double-control auxiliary parking valve and commercial vehicle braking system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072561A (en) * 2013-02-07 2013-05-01 郭玉 Parking braking releasing device for automobile
US10137750B2 (en) 2016-02-25 2018-11-27 Bendix Commercial Vehicle Systems Llc Controller and method for controlling a lift axle and air suspension on a trailer
CN106043259A (en) * 2016-06-27 2016-10-26 中国重汽集团济南动力有限公司 Independent air source parking braking system and operating method
CN105927511A (en) * 2016-06-29 2016-09-07 广西玉柴机器股份有限公司 Emergency energy system and method for air compressor
CN105927511B (en) * 2016-06-29 2018-06-29 广西玉柴机器股份有限公司 A kind of air compressor Emergency power source system and its Supply Method
CN112644443A (en) * 2020-12-30 2021-04-13 一汽解放汽车有限公司 Pneumatic-electric double-control auxiliary parking valve and commercial vehicle braking system
CN112644443B (en) * 2020-12-30 2021-11-02 一汽解放汽车有限公司 Pneumatic-electric double-control auxiliary parking valve and commercial vehicle braking system

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130109

Termination date: 20190507