CN204736841U - Parking braking system - Google Patents

Parking braking system Download PDF

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Publication number
CN204736841U
CN204736841U CN201520331990.7U CN201520331990U CN204736841U CN 204736841 U CN204736841 U CN 204736841U CN 201520331990 U CN201520331990 U CN 201520331990U CN 204736841 U CN204736841 U CN 204736841U
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CN
China
Prior art keywords
air
valve
brake
relay valve
brake cylinder
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Active
Application number
CN201520331990.7U
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Chinese (zh)
Inventor
刘杰
石大开
关春智
梁进楚
李津鹏
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Special Vehicle Technology Center of Hubei Aerospace Technology Research Institute
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Special Vehicle Technology Center of Hubei Aerospace Technology Research Institute
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Priority to CN201520331990.7U priority Critical patent/CN204736841U/en
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Publication of CN204736841U publication Critical patent/CN204736841U/en
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Abstract

The utility model relates to the field of automotive technology, a parking braking system is disclosed, including gas receiver and brake chamber, parking braking system still includes: the hand brake valve, the air inlet of hand brake valve with the gas receiver is connected, the relay valve, the air inlet of relay valve with the gas receiver is connected, the gas outlet of relay valve with brake chamber connects, the relay valve still includes a drill way, the drill way with the gas outlet of hand brake valve is connected to communicate with each other with the atmosphere, the voltage limiting valve, the voltage limiting valve set up in the relay valve the gas outlet with between the brake chamber. The utility model provides a parking braking system has solved the too high harm that causes brake chamber of atmospheric pressure in the parking return circuit among the prior art to and need realize the problem of braking through increasing braking distance and gas receiver volume.

Description

A kind of emergency brake system
Technical field
The utility model relates to automobile technical field, particularly a kind of emergency brake system.
Background technology
Compression air brake has that lock torque is large, pedal stroke is shorter, handle the advantages such as light, is widely used in the brake system of heavy duty truck and automobile.
The brake system of current employing, the principle of compression air brake is the power driven air compressor work with driving engine, then compressed-air actuated pressure is changed into the mechanical thrust of brake shoe expander, makes car side brake produce lock torque.
Present inventor is in the process realizing the embodiment of the present application technical scheme, at least find to there is following technical matters in prior art: what require along with performance figure such as car brakeing distance, load-carryings improves constantly, brake system pressure also improves gradually, in order to meet the pressure demand of brake system, existing emergency brake system needs increase emergency brake distance or air receiver volume to adapt to higher brake system pressure, meanwhile, anticyclonic pressure also can cause damage to compressed air brake cylinder.
Utility model content
The purpose of this utility model is to provide a kind of emergency brake system, solves the too high infringement caused compressed air brake cylinder of air pressure in parking loop in prior art, and needs the problem being realized braking by increase stopping distance and air receiver volume.
For achieving the above object, the utility model provides a kind of emergency brake system, comprises air receiver and compressed air brake cylinder, described Air compressor by engine drive, produce pressurized air, described emergency brake system also comprises: hand brake valve, and the admission port of described hand brake valve is connected with described air receiver; Relay valve, the admission port of described relay valve is connected with described air receiver, and the air extractor duct of described relay valve is connected with described compressed air brake cylinder, and described relay valve also comprises an aperture, and described aperture is connected with the air extractor duct of described hand brake valve, and communicates with air; Limiting valve, described limiting valve is arranged between the described air extractor duct of described relay valve and described compressed air brake cylinder; Wherein, described air receiver provides described pressurized air to described hand brake valve and described relay valve, after described relay valve output squeezing air, described limiting valve reduces described compressed-air actuated air pressure, enter described compressed air brake cylinder, after described compressed air brake cylinder receives described pressurized air, remove braking during standstill power; When described hand brake valve disconnects, pressurized air by the described aperture of described relay valve, and is disposed in air through the air extractor duct of described hand brake valve, thus realizes braking during standstill.
Further, described emergency brake system also comprises an Air compressor, described Air compressor by engine drive, produce pressurized air, and to be stored in described air receiver.
Further, described compressed air brake cylinder comprises spring and push rod, and described spring is fixedly connected with described push rod, and by the compressed-air actuated flow direction of described compressed air brake cylinder, the action of described push rod is promoted, with the power of the braking force and brake off that form parking under the effect of described spring.
Compared with prior art, the emergency brake system that the utility model provides has the following advantages and beneficial effect:
1, relay valve is set between hand brake valve and compressed air brake cylinder, can shortens and inflate distance by air receiver to compressed air brake cylinder, and by relay valve, the pressurized air in compressed air brake cylinder is discharged in air, be convenient to realize braking.
2, limiting valve is set between the relay valve air extractor duct and compressed air brake cylinder of emergency brake system, the pressure of the gas in brake system parking loop can be reduced, avoid the brake air chamber potential safety hazard that anticyclonic pressure brings, and the air pressure entering compressed air brake cylinder does not increase, evacuation time does not extend, and effectively realizes braking when not needing to increase emergency brake distance and air receiver volume.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present application, below the accompanying drawing that uses required in describing embodiment and Reference numeral are briefly described, apparently, accompanying drawing in the following describes is only the embodiment of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The principle schematic of the emergency brake system that Fig. 1 provides for the utility model embodiment;
Description of reference numerals:
1. Air compressor 2. air receiver 3. hand brake valve 4. relay valve 5. limiting valve 6. compressed air brake cylinder
Detailed description of the invention
The embodiment of the present application, by providing a kind of emergency brake system, solves the too high infringement caused compressed air brake cylinder of air pressure in parking loop in prior art, and needs increase stopping distance and air receiver volume to realize the problem of braking.
The technical scheme of the embodiment of the present application is for solving the problems of the technologies described above, and general thought is as follows:
A kind of emergency brake system, comprise air receiver and compressed air brake cylinder, described emergency brake system also comprises: hand brake valve, and the admission port of described hand brake valve is connected with described air receiver; Relay valve, the admission port of described relay valve is connected with described air receiver, and the air extractor duct of described relay valve is connected with described compressed air brake cylinder, and described relay valve also comprises an aperture, and described aperture is connected with the air extractor duct of described hand brake valve, and communicates with air; Limiting valve, described limiting valve is arranged between the described air extractor duct of described relay valve and described compressed air brake cylinder.
In order to understand the technical scheme of the application better, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail, the specific features being to be understood that in the utility model embodiment and embodiment is the detailed description to technical scheme, instead of the restriction to technical scheme, when not conflicting, the technical characteristic in the embodiment of the present application and embodiment can combine mutually.
The utility model embodiment provides a kind of emergency brake system, and comprise air receiver 2 and compressed air brake cylinder 6, described emergency brake system also comprises:
Hand brake valve 3, the admission port of described hand brake valve 3 is connected with described air receiver 2;
Relay valve 4, the admission port of described relay valve 4 is connected with described air receiver 2, and the air extractor duct of described relay valve 4 is connected with described compressed air brake cylinder 6, and described relay valve 4 also comprises an aperture, and described aperture is connected with the air extractor duct of described hand brake valve 3, and communicates with air;
Limiting valve 5, between the described air extractor duct that described limiting valve 5 is arranged at described relay valve 4 and described compressed air brake cylinder 6;
Wherein, described air receiver 2 provides described pressurized air to described hand brake valve 3 and described relay valve 4, after described relay valve 4 output squeezing air, described limiting valve 5 reduces described compressed-air actuated air pressure, enter described compressed air brake cylinder 6, after described compressed air brake cylinder 6 receives described pressurized air, remove braking during standstill power; When described hand brake valve 3 disconnects, pressurized air through the described aperture of described relay valve 4, and to be disposed in air by the air extractor duct of described hand brake valve 3 thus to realize braking during standstill.
Wherein, described relay valve 4 shortens described pressurized air from described air receiver 2 to the distance of described compressed air brake cylinder 6 after obtaining the pressurized air from described hand brake valve 3 and described air receiver 2.
Wherein, described limiting valve 5 enters described compressed air brake cylinder 6 after reducing described compressed-air actuated air pressure again, converts air pressure to power after described compressed air brake cylinder 6 receives described pressurized air, removes braking during standstill power; Pressurized air in described compressed air brake cylinder 6 through described relay valve 4, then drains in air by the air extractor duct of described hand brake valve 3, forms the braking force of parking thus realizes braking during standstill.
Further, described emergency brake system also comprises Air compressor 1, described Air compressor 1 by engine drive, produce pressurized air, and to be stored in described air receiver 2.
Further, described compressed air brake cylinder 6 comprises spring and push rod, described spring is fixedly connected with described push rod, and by the compressed-air actuated flow direction in described compressed air brake cylinder 6, the action of described push rod is promoted under the effect of described spring, with the power of the braking force and brake off that form parking, specifically, air pressure is converted to power after described compressed air brake cylinder 6 receives described pressurized air, described spring moves to left, and promote described push rod and to move to left return, thus remove braking during standstill power, when the pressurized air in described compressed air brake cylinder 6 is disposed in air through described relay valve 4, air pressure forms the braking force of parking, described spring moves to right, and promote described push rod and move to right, thus realize braking during standstill.
In specific implementation process, the process that the parking system that the application provides realizes braking is as follows.
Described Air compressor 1 is by engine drive, produce pressurized air, be stored in described air receiver 2, air receiver 2 is as storage air feed body source, there is provided pressurized air to the admission port of hand brake valve 3 and relay valve 4, limiting valve 5 is arranged between the air extractor duct of relay valve 4 and compressed air brake cylinder 6; When opening hand brake valve 3, pressurized air leads to compressed air brake cylinder 6 through hand brake valve 3, led in the process of compressed air brake cylinder 6 by hand brake valve 3 in pressurized air, through the effect of limiting valve 5, reduce described compressed-air actuated air pressure, now, enter described compressed air brake cylinder 6 again, described compressed air brake cylinder 6 converts described compressed-air actuated air pressure to power, and then promotes described spring and move to left, and drive described push rod to move to left return, thus remove the braking force of parking.
When disconnection hand brake valve 3, the pressurized air in compressed air brake cylinder 6 and brake circuit through the aperture of relay valve 4, and drains in air by the air extractor duct of hand brake valve 3, and spring moves to right, and drives described push rod to move to right, thus realizes braking during standstill.
Compared with prior art, the emergency brake system that the utility model provides has the following advantages and beneficial effect:
1, relay valve is set between hand brake valve and compressed air brake cylinder, can shortens and inflate distance by air receiver to compressed air brake cylinder, and by relay valve, the pressurized air in compressed air brake cylinder is discharged in air, be convenient to realize braking.
2, limiting valve is set between the relay valve air extractor duct and compressed air brake cylinder of emergency brake system, the pressure of the gas in brake system parking loop can be reduced, avoid the brake air chamber potential safety hazard that anticyclonic pressure brings, and the air pressure entering compressed air brake cylinder does not increase, evacuation time does not extend, and effectively realizes braking when not needing to increase emergency brake distance and air receiver volume.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.

Claims (3)

1. an emergency brake system, comprises air receiver and compressed air brake cylinder, it is characterized in that, described emergency brake system comprises:
Hand brake valve, the admission port of described hand brake valve is connected with described air receiver;
Relay valve, the admission port of described relay valve is connected with described air receiver, and the air extractor duct of described relay valve is connected with described compressed air brake cylinder, and described relay valve also comprises an aperture, and described aperture is connected with the air extractor duct of described hand brake valve, and communicates with air;
Limiting valve, described limiting valve is arranged between the described air extractor duct of described relay valve and described compressed air brake cylinder;
Wherein, described air receiver provides pressurized air to described hand brake valve and described relay valve, after described relay valve output squeezing air, described limiting valve reduces described compressed-air actuated air pressure, enter described compressed air brake cylinder, after described compressed air brake cylinder receives described pressurized air, remove braking during standstill power; When described hand brake valve disconnects, pressurized air by the described aperture of described relay valve, and is disposed in air through the air extractor duct of described hand brake valve, thus realizes braking during standstill.
2. emergency brake system according to claim 1, is characterized in that, described emergency brake system also comprises an Air compressor, described Air compressor by engine drive, produce pressurized air, and to be stored in described air receiver.
3. emergency brake system according to claim 1, it is characterized in that, described compressed air brake cylinder comprises spring and push rod, described spring is fixedly connected with described push rod, and by the compressed-air actuated flow direction of described compressed air brake cylinder, the action of described push rod is promoted, with the power of the braking force and brake off that form parking under the effect of described spring.
CN201520331990.7U 2015-05-21 2015-05-21 Parking braking system Active CN204736841U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520331990.7U CN204736841U (en) 2015-05-21 2015-05-21 Parking braking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520331990.7U CN204736841U (en) 2015-05-21 2015-05-21 Parking braking system

Publications (1)

Publication Number Publication Date
CN204736841U true CN204736841U (en) 2015-11-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520331990.7U Active CN204736841U (en) 2015-05-21 2015-05-21 Parking braking system

Country Status (1)

Country Link
CN (1) CN204736841U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107914689A (en) * 2017-11-08 2018-04-17 湖北航天技术研究院特种车辆技术中心 A kind of parking braking system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107914689A (en) * 2017-11-08 2018-04-17 湖北航天技术研究院特种车辆技术中心 A kind of parking braking system

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