CN2656240Y - Towing trolley vehicle and semitrailer brake system - Google Patents
Towing trolley vehicle and semitrailer brake system Download PDFInfo
- Publication number
- CN2656240Y CN2656240Y CN 03269364 CN03269364U CN2656240Y CN 2656240 Y CN2656240 Y CN 2656240Y CN 03269364 CN03269364 CN 03269364 CN 03269364 U CN03269364 U CN 03269364U CN 2656240 Y CN2656240 Y CN 2656240Y
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- Prior art keywords
- trailer
- brake
- valve
- chamber
- braking
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- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The utility model discloses a brake system for a towing vehicle and a semi-trailer. The utility model comprise a four return circuit protecting distributing valve (1) which is communicated with a gas storing cylinder (2) of the towing vehicle and a gas storing cylinder (9) of the trailer through inflating pipelines, and a manual brake valve (6) and a gas brake joint (7) are arranged on each inflating pipeline. The utility model is characterized in that a three chamber foot brake valve (3) which is respectively connected with a front axle brake chamber (4), a rear axle spring brake chamber (5) and a trailer emergency relay valve (8) is arranged on each inflating pipeline. A trailer inflating pipeline (11) is arranged on the rear part of the manual brake valve (6), and a trailer spring brake chamber (10) and the trailer emergency relay valve (8) are arranged on the trailer inflating pipeline (11). The utility model is a brake system which has the advantages of simple structure, low cost, difficult fault occurrence and reliable use.
Description
(1) technical field:
The utility model relates to tractor truck and superimposed trailer technical field, is tractor truck and superimposed trailer brake system specifically.
(2) background technology:
Brake system is the guarantee of vehicle safety travel, the braking ability of automobile is directly connected to personal safety and property safety, tractor truck commonly used and superimposed trailer brake system enter tractor truck air tank and trailer air tank from the pressurized air that Air compressor comes respectively through four loop protection distributing valves, by handling two-chamber foot brake valve, transmit speed-slackening signal to propons brake repair room and back axle brake application by spring chamber, realize the braking of tractor truck, the two-way speed-slackening signal is delivered to trailer braking valve simultaneously, produce the trailer braking protection valve signal, by the trailer emergency relay valve, be input to trailer brake application by spring chamber, realize the braking of trailer, by handling hand brake valve, can realize the braking during standstill of tractor and trailer, wherein four loop protection distributing valves make the propons brake circuit, the back axle brake circuit, the trailer braking protection valve loop is separate, after losing efficacy in arbitrary loop, other loop still can keep certain safe pressure, guarantees traffic safety; Two-chamber foot brake valve guarantees that tractor truck propons, back axle brake circuit are separate; Back axle brake application by spring chamber and trailer brake application by spring chamber are except realizing the service brake that with the propons brake repair room its spring cavity also plays parking-brake action; The effect of hand brake valve is to spring cavity input air brake off, and air-out is realized braking during standstill; The effect of trailer braking valve is to accept propons, back axle and parking brake signals, produces the trailer braking protection valve signal, and as long as the input of wherein arbitrary signal all can produce the trailer braking protection valve signal; The effect of trailer emergency relay valve is to accept the trailer braking protection valve signal that trailer braking valve produces in the driving to implement normal compression air brake, implements the emergency braking of trailer when the loading line et out of order of trailer; But there is following problem: a in this system, often the trailer braking protection valve hysteresis phenomenon takes place, though adopt leading function trailer braking valve, leading emergency relay valve more, but the trailer braking protection valve hysteresis phenomenon is difficult to solve, and trailer bump tractor truck phenomenon appears in braking often, even trailer whipping phenomenon occurs; B, the spring cavity work of uncontrollable trailer brake application by spring chamber in operator's compartment, though can realize the braking during standstill of trailer by hand brake valve, trailer braking valve, and this moment, the tractor truck braking during standstill was that the exhaust of back axle brake application by spring chamber realizes, the trailer braking during standstill but is gas filed pattern, generally between trailer air tank and trailer brake application by spring chamber, add a switch, realize the spring braking during standstill of dying of trailer, but this needs the chaufeur operation of getting off; C, system are complicated, and hand brake valve, the easy et out of order of trailer braking valve influence the performance of total system.
(3) summary of the invention:
The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, and improved tractor truck of a kind of pipeline system and superimposed trailer brake system are provided, mainly solved the trailer braking protection valve hysteresis phenomenon, the spring cavity work of uncontrollable trailer brake application by spring chamber and the problem of system complex in operator's compartment.
In order to achieve the above object; the utility model is achieved in that tractor truck and superimposed trailer brake system; it comprises four loop protection distributing valves 1; four loop protection distributing valves 1 communicate with tractor truck air tank 2 and trailer air tank 9 by loading line; on loading line, establish hand brake valve 6 and gas braking joint 7; its special character is to establish three chamber foot brake activation valve 3 on loading line; respectively with propons brake repair room 4; back axle brake application by spring chamber 5; trailer emergency relay valve 8 connects; portion at hand brake valve 6 establishes trailer loading line 11, establishes trailer brake application by spring chamber 10 and trailer emergency relay valve 8 on trailer loading line 11.
Tractor truck of the present utility model and superimposed trailer brake system, its described three chamber foot brake activation valve 3 is controlled the service brake of propons brake repair room 4, back axle brake application by spring chamber 5 and trailer brake application by spring chamber 10 respectively; Also control the braking during standstill of trailer brake application by spring chamber 10 when hand brake valve 6 is controlled back axle brake application by spring chambers 5 braking during standstills, hand brake valve 6 is 9 inflations of trailer air tank by trailer emergency relay valve 8 also simultaneously.
Compared with the prior art tractor truck described in the utility model and superimposed trailer brake system have following good effect: 1, two-chamber foot brake valve is used the three chamber foot brake activation valve instead, control the braking of propons, back axle, trailer axle respectively, and guarantee that each brake circuit is separate, thereby solved the trailer braking protection valve hysteresis phenomenon; 2, trailer brake application by spring chamber is received on the loading line before the trailer emergency relay valve, in operator's compartment, can control the spring cavity work of trailer brake application by spring chamber by hand brake valve; 3, safety during emergency situation, when trailer loading line et out of order, when the trailer emergency relay valve worked, the spring cavity of back axle brake application by spring chamber and trailer brake application by spring chamber also produced brake action because of air pressure descends, and tractor and trailer is emergency braking simultaneously; The more important thing is when trailer braking protection valve pipeline et out of order, the decline of trailer braking protection valve line pressure causes the loading line pressure decay of hand brake valve, emergency braking effect in the time of can producing trailer loading line et out of order equally, existing systems then do not possess this function; 4, system is simple, and cost is low, is difficult for et out of order, uses reliable.
(4) description of drawings:
Fig. 1---structural representation of the present utility model.
(5) specific embodiment:
In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and describe the utility model tractor truck and superimposed trailer brake system in detail.
Embodiment 1; referring to Fig. 1; be divided into three the tunnel from the next pressurized air of Air compressor through four loop protection distributing valves 1 and enter tractor truck air tank 2 respectively; tractor truck air tank 2 is communicated with trailer air tank 9 by loading line; three chamber foot brake activation valve 3 is installed on loading line; respectively with propons brake repair room 4; back axle brake application by spring chamber 5; trailer emergency relay valve 8 connects; hand brake valve 6 and gas braking joint 7 are installed on loading line; at the rear portion of hand brake valve 6 trailer loading line 11 is set, trailer brake application by spring chamber 10 and trailer emergency relay valve 8 are installed on trailer loading line 11.
Tractor truck described in the utility model and superimposed trailer brake system, during work, the pressurized air of coming from Air compressor enters tractor truck air tank and trailer air tank respectively through four loop protection distributing valves, by handling the three chamber foot brake activation valve, transmit speed-slackening signal to propons brake repair room, back axle brake application by spring chamber and trailer emergency relay valve, the trailer emergency relay valve is input to signal trailer brake application by spring chamber again, thereby realizes the braking of tractor truck and trailer; Handle hand brake valve, can realize the braking during standstill of tractor and trailer, back axle brake application by spring chamber and trailer brake application by spring chamber are except realizing the service brake with the propons brake repair room, its spring cavity also plays parking-brake action, hand brake valve can be to spring cavity input air brake off, and air-out is realized braking during standstill.
Claims (1)
1; tractor truck and superimposed trailer brake system; it comprises four loop protection distributing valves (1); four loop protection distributing valves (1) communicate with tractor truck air tank (2) and trailer air tank (9) by loading line; on loading line, establish hand brake valve (6) and gas braking joint (7); it is characterized in that on loading line, establishing three chamber foot brake activation valve (3); respectively with propons brake repair room (4); back axle brake application by spring chamber (5); trailer emergency relay valve (8) connects; establish trailer loading line (11) at the rear portion of hand brake valve (6), on trailer loading line (11), establish trailer brake application by spring chamber (10) and trailer emergency relay valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269364 CN2656240Y (en) | 2003-08-06 | 2003-08-06 | Towing trolley vehicle and semitrailer brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269364 CN2656240Y (en) | 2003-08-06 | 2003-08-06 | Towing trolley vehicle and semitrailer brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2656240Y true CN2656240Y (en) | 2004-11-17 |
Family
ID=34330221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03269364 Expired - Fee Related CN2656240Y (en) | 2003-08-06 | 2003-08-06 | Towing trolley vehicle and semitrailer brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2656240Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745184A (en) * | 2012-07-25 | 2012-10-24 | 第一拖拉机股份有限公司 | Trailer ahead braking system for tractor |
| CN104340198B (en) * | 2014-09-22 | 2017-01-11 | 中联重科股份有限公司 | Vehicle air brake system and vehicle |
| CN110546730A (en) * | 2017-04-26 | 2019-12-06 | 黑拉有限责任两合公司 | Method, device, computer program product and computer readable medium for fault detection in a switch assembly |
| CN114940211A (en) * | 2022-06-15 | 2022-08-26 | 东风柳州汽车有限公司 | Tractor braking system |
-
2003
- 2003-08-06 CN CN 03269364 patent/CN2656240Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745184A (en) * | 2012-07-25 | 2012-10-24 | 第一拖拉机股份有限公司 | Trailer ahead braking system for tractor |
| CN104340198B (en) * | 2014-09-22 | 2017-01-11 | 中联重科股份有限公司 | Vehicle air brake system and vehicle |
| CN110546730A (en) * | 2017-04-26 | 2019-12-06 | 黑拉有限责任两合公司 | Method, device, computer program product and computer readable medium for fault detection in a switch assembly |
| CN114940211A (en) * | 2022-06-15 | 2022-08-26 | 东风柳州汽车有限公司 | Tractor braking system |
| CN114940211B (en) * | 2022-06-15 | 2023-09-05 | 东风柳州汽车有限公司 | tractor braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |