CN203496879U - Double-loop braking system of internal combustion tractor - Google Patents
Double-loop braking system of internal combustion tractor Download PDFInfo
- Publication number
- CN203496879U CN203496879U CN201320626147.2U CN201320626147U CN203496879U CN 203496879 U CN203496879 U CN 203496879U CN 201320626147 U CN201320626147 U CN 201320626147U CN 203496879 U CN203496879 U CN 203496879U
- Authority
- CN
- China
- Prior art keywords
- valve
- brake
- braking system
- air
- emergency relay
- 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 - Lifetime
Links
Images
Abstract
The utility model provides a double-loop braking system of an internal combustion tractor. The double-loop braking system of the internal combustion tractor comprises a hydraulic braking system and a pneumatic braking system. An oil outlet of an oil delivery pump of the hydraulic braking system is connected with an oil inlet of a proportional valve through a liquid injection valve. Two oil outlets of the proportional valve are respectively connected with a hydraulic braking valve. The hydraulic braking valve is respectively connected with a front brake sub pump and a rear brake sub pump which are used for controlling each front wheel and each rear wheel to brake respectively. The pneumatic braking system comprises an air supply pipeline and a control pipeline which are connected with the air inlet end of an emergency relay valve. The air outlet end of the emergency relay valve is connected with the air inlet of an air storage cylinder. The air outlet end of the air storage cylinder is respectively connected with the rear brake sub pump and the emergency relay valve through a pneumatic brake valve. The air outlet end of the emergency relay valve is connected with the front brake sub pump. Thus, when one braking system breaks down, the other braking system can work normally and the heavy load safety of the internal combustion tractor and the stability and the reliability of the braking systems are improved.
Description
Technical field
The utility model relates to a kind of motor vehicle braking system, is specifically related to a kind of split brake system of gas tractor.
Background technology
Along with the sustained and rapid development of China's economy, all kinds of plane transportation logisticses places such as domestic airport, harbour, metallurgy, boats and ships and locomotive manufacture need to be drawn and the requirement of the haulage equipment of ejection goods increases by a wide margin.By reasonable actv. logistics transportation scheme, can greatly improve the operating efficiency of transportation.Gas tractor belongs to Regional Logistics technical field, is the complex product that integrates the technology such as machinery, electronics, hydraulic pressure, meets the engineering truck of traction and ejection operation needs.
What gas tractor was used at present is the power brake system with energy storage, is mainly by master brake cylinder, drg, energy storage, and brake activation valve etc. partly form.When stepping on brake pedal, push rod promotes master brake cylinder piston, braking liquid in master brake cylinder is pressed in brake cylinder by pipeline, thereby promotes wheelcylinder piston motion, brake strap is pressed onto on brake wheel and by wheel braking.But when the gas tractor of this brake system is used in large-scale logistics regions such as harbour and metallurgy, the goods that need to draw due to gas tractor weighs nearly hundred tons, go up a slope or descent run in, this service braking system can not guarantee vehicle safety, rapidly, effectively stop effectively.When its engine off or pipeline system leakage of oil, if driver emergency is dealt with improperly, there are major safety risks especially.
For improving tractor truck heavy-duty safety, particularly higher to brake system stability and the reliability requirement of engineering truck in the road surface situation of more complicated and heavily loaded situation, service brake must be controollable, guarantees that chaufeur both hands on its seat need not just can realize car brakeing by departure direction dish.
Utility model content
The utility model is in order to solve the problems of the technologies described above, a kind of split brake system of gas tractor is provided, effectively the hydraulic brake system of service brake is combined with the Pneumatic braking system of braking during standstill, improve stability and the reliability requirement of tractor truck brake system.
The technical solution of the utility model is: a kind of split brake system of gas tractor, comprise hydraulic brake system and Pneumatic braking system, described hydraulic brake system comprises fuel transfer pump, the oil outlet of described fuel transfer pump is connected with the oil inlet of apportioning valve by prefill valve, two oil outlets of described apportioning valve are connected with hydraulic brake valve respectively, and described hydraulic brake valve is connected respectively with for controlling front brake wheel cylinder, the rear brake wheel cylinder of every front and rear wheel braking; Described Pneumatic braking system comprises supply air line and the pilot piping being connected with the inlet end of emergency relay valve, the outlet side of described emergency relay valve is connected with the inlet end of air receiver, the outlet side of described air receiver is connected with rear brake wheel cylinder, emergency relay valve respectively by air brake valve, and the outlet side of emergency relay valve is connected with front brake wheel cylinder.
Further, between two oil outlets of described apportioning valve and hydraulic brake valve, be connected respectively an energy storage.
Further, between described prefill valve and apportioning valve, be connected with by pass valve.
Further, described apportioning valve exit end is provided with low-pressure alarming device.
In order to protect front brake, between hydraulic brake valve and front brake wheel cylinder, be provided with hysteresis valve.
Further, described supply air line is provided with Air compressor, and the outlet side of described Air compressor is connected with emergency relay valve by oil water separator, pressure-gradient control valve successively.
Further, in order to make trailer that tractor truck draws also can reach braking effectively when the braking during standstill, described pilot piping is provided with the control gas joint being connected with trailer gas circuit.
In the utility model, the hydraulic brake system of tractor truck is two independently brake circuit compositions to the braking of front and rear wheel, and after one of them brake circuit is malfunctioning, second brake circuit normally worked, thereby guaranteed traffic safety.Set scale valve in two brake circuits simultaneously, regulates respectively the pressure of front brake wheel cylinder, rear brake wheel cylinder; And the energy-storage function that utilizes energy storage makes drg wheel cylinder have suitable braking force, make vehicle can reach maximum braking force, the stability that assurance is travelled again, guarantees car load safe reliability.When vehicle is in normal working, driving engine supplements hydraulic oil to accumulator, and when wherein the energy decreases of some accumulators arrives a certain value, warning device can send alerting signal.
The front-wheel of tractor truck (wheel flutter) is selected caliper disk brake, is provided with hysteresis valve in its oil circuit, and the Br mouth of the valve that lags behind when the pressure of hydraulic oil is less than 0.17MPa is not opened; The valve Br eloquence that lags behind when hydraulic fluid pressure reaches 1.7MPa starts to open, and when pressure is greater than 4.7MPa, its Br mouth is opened completely, effectively protects caliper disk brake, and extends its life-span.
In the utility model, the Pneumatic braking system of tractor truck is also to adopt dual circuit design, is divided into supply air line and pilot piping.Tractor truck is in when work, the work of driven by engine Air compressor, pressurized air is carried out air feed by emergency relay valve to air receiver through supply air line through oil water separator and pressure-gradient control valve, simultaneously by air brake valve forward, rear brake wheel cylinder carries out air feed.After air receiver internal gas pressure surpasses 7.84bar, braking during standstill is removed.And when needs are braked, while stepping on brake pedal, in pilot piping, cross gas, and air-flow backs down the valve of emergency relay valve, and at this moment air receiver starts the compressed air brake cylinder air feed to each forward and backward drg wheel cylinder, and vehicle starts brake, enters braking mode.I.e. braking in normal braking is achieved in that, while stepping on brake pedal, pilot piping is supplied gas, and emergency relay valve is controlled air receiver and produced braking force to air brake valve air feed; Work as loosen the brake, emergency relay valve discharges each drg wheel cylinder pressurized air fast, rapidly brake off state.The control gas joint of controlling in gas circuit is connected with the gas circuit of trailer simultaneously, trailer is played to brake action simultaneously.
And when brake system does not have air pressure to lose efficacy; trailer emergency brake system works: when tractor truck is inflated to trailer air receiver by supply air line; emergency relay valve is first sent into pressurized air each drg wheel cylinder under safety arrestment state; when air receiver pressure rises is to 7.84bar; safe condition is removed; each brake cylinder produces braking force under inflated condition, thereby has protected safety and the actual effect of braking.
So the utlity model has hydraulic brake system and Pneumatic braking system double control system, and in conjunction with they advantages separately, thereby guaranteed that second brake system can normally be worked after a brake system lost efficacy.And met the braking safety of port tractor, the compactedness of structure, and can realize again the long-distance centralized control of the trailer braking protection valve of traction, there is good expansion.
The utility model general solution has been determined service braking system in partial failure situation during as front-wheel or trailing wheel pipeline leakage, another road is handled service braking system and still can be braked, when engine off, still can realize multiway braking, thereby met chaufeur, on its seat, both hands need not the braking of departure direction dish with regard to realizing.Improve gas tractor heavy-duty safety simultaneously, and improved stability, the reliability of tractor truck in the brake system of the road surface of more complicated situation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is hydraulic brake system schematic diagram of the present utility model;
Fig. 2 is Pneumatic braking system schematic diagram of the present utility model;
In figure: 1-fuel transfer pump, 2-prefill valve, 3-by pass valve, 4-apportioning valve, 5-energy storage, 6-hydraulic brake valve, 7-hysteresis valve, 8-1 front brake wheel cylinder, 8-2 rear brake wheel cylinder; 9-supply air line, 10-pilot piping, 11-Air compressor, 12-oil water separator, 13-pressure-gradient control valve, 14-emergency relay valve, 15-air receiver, 16-air brake valve, 17-controls gas joint.
The specific embodiment
As shown in Figure 1, hydraulic brake system comprises fuel transfer pump 1, the oil outlet of described fuel transfer pump 1 is connected with the oil inlet of apportioning valve 4 by prefill valve 2, by pass valve 3, two oil outlets of described apportioning valve 4 are connected with hydraulic brake valve 6 by an energy storage 5 respectively, and described hydraulic brake valve 6 is connected respectively with for controlling front brake wheel cylinder 8-1, the rear brake wheel cylinder 8-2 of every front and rear wheel braking.
Further, described apportioning valve 4 exit end are provided with low-pressure alarming device, and when wherein the energy decreases of some accumulators arrives a certain value, warning device can send alerting signal.In order to protect front brake, between hydraulic brake valve 6 and front brake wheel cylinder 8-1, be provided with hysteresis valve 7.
Hydraulic brake system is two independently brake circuit compositions to the braking of front and rear wheel, and after one of them brake circuit is malfunctioning, second brake circuit normally worked, thereby guaranteed traffic safety.
As shown in Figure 2, Pneumatic braking system comprises the supply air line 9 and pilot piping 10 being connected with the inlet end of emergency relay valve 14, the outlet side of described emergency relay valve 14 is connected with the inlet end of air receiver 15, the outlet side of described air receiver 15 is connected with rear brake wheel cylinder 8-2, emergency relay valve 14 respectively by air brake valve 16, and the outlet side of emergency relay valve 14 is connected with front brake wheel cylinder 8-1.
Further, described supply air line 9 is provided with Air compressor 11, and the outlet side of described Air compressor 11 is connected with emergency relay valve 14 by oil water separator 12, pressure-gradient control valve 13 successively; Pilot piping 10 is provided with the control gas joint 17 being connected with trailer gas circuit.
While stepping on brake pedal during normal braking, pilot piping is supplied gas, and emergency relay valve is controlled air receiver and produced braking force to air brake valve air feed; Work as loosen the brake, emergency relay valve discharges each drg wheel cylinder pressurized air fast, rapidly brake off state.The control gas joint of controlling in gas circuit is connected with the gas circuit of trailer simultaneously, trailer is played to brake action simultaneously.And when brake system does not have air pressure to lose efficacy; trailer emergency brake system works; when tractor truck is inflated to trailer air receiver by supply air line; emergency relay valve is first sent into pressurized air each drg wheel cylinder under safety arrestment state; when air receiver pressure rises is to 7.84bar; safe condition is removed, and each brake cylinder produces braking force under inflated condition, thereby has protected safety and the actual effect of braking.
Above embodiment is not limited only to protection domain of the present utility model, all based on basic thought of the present utility model, modify or change all belong to protection domain of the present utility model.
Claims (7)
1. the split brake system of a gas tractor, it is characterized in that: comprise hydraulic brake system and Pneumatic braking system, described hydraulic brake system comprises fuel transfer pump, the oil outlet of described fuel transfer pump is connected with the oil inlet of apportioning valve by prefill valve, two oil outlets of described apportioning valve are connected with hydraulic brake valve respectively, and described hydraulic brake valve is connected respectively with for controlling front brake wheel cylinder, the rear brake wheel cylinder of every front and rear wheel braking; Described Pneumatic braking system comprises supply air line and the pilot piping being connected with the inlet end of emergency relay valve, the outlet side of described emergency relay valve is connected with the inlet end of air receiver, the outlet side of described air receiver is connected with rear brake wheel cylinder, emergency relay valve respectively by air brake valve, and the outlet side of emergency relay valve is connected with front brake wheel cylinder.
2. the split brake system of a kind of gas tractor according to claim 1, is characterized in that: between two oil outlets of described apportioning valve and hydraulic brake valve, be connected respectively an energy storage.
3. the split brake system of a kind of gas tractor according to claim 1, is characterized in that: between described prefill valve and apportioning valve, be connected with by pass valve.
4. the split brake system of a kind of gas tractor according to claim 1, is characterized in that: described apportioning valve exit end is provided with low-pressure alarming device.
5. the split brake system of a kind of gas tractor according to claim 1, is characterized in that: between hydraulic brake valve and front brake wheel cylinder, be provided with hysteresis valve.
6. the split brake system of a kind of gas tractor according to claim 1, is characterized in that: described supply air line is provided with Air compressor, and the outlet side of described Air compressor is connected with emergency relay valve by oil water separator, pressure-gradient control valve successively.
7. the split brake system of a kind of gas tractor according to claim 1, is characterized in that: described pilot piping is provided with the control gas joint being connected with trailer gas circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626147.2U CN203496879U (en) | 2013-10-11 | 2013-10-11 | Double-loop braking system of internal combustion tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626147.2U CN203496879U (en) | 2013-10-11 | 2013-10-11 | Double-loop braking system of internal combustion tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203496879U true CN203496879U (en) | 2014-03-26 |
Family
ID=50327878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320626147.2U Expired - Lifetime CN203496879U (en) | 2013-10-11 | 2013-10-11 | Double-loop braking system of internal combustion tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203496879U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312528A (en) * | 2014-07-30 | 2016-02-10 | 广东兴发铝业（河南）有限公司 | Power-off emergency protection device for aluminum bar casting |
| CN105501247A (en) * | 2016-01-13 | 2016-04-20 | 同济大学 | Braking system for freight train |
| CN106184169A (en) * | 2016-08-10 | 2016-12-07 | 广西柳工机械股份有限公司 | Engineering machinery hydraulic brakes |
| CN107972650A (en) * | 2017-08-04 | 2018-05-01 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic-pneumatic composite braking system for the protection of flame proof rubber tyre vehicle band door |
| CN107650895B (en) * | 2017-08-30 | 2020-02-14 | 中国煤炭科工集团太原研究院有限公司 | Forward and reverse logic double-loop brake control system |
-
2013
- 2013-10-11 CN CN201320626147.2U patent/CN203496879U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312528A (en) * | 2014-07-30 | 2016-02-10 | 广东兴发铝业（河南）有限公司 | Power-off emergency protection device for aluminum bar casting |
| CN105501247A (en) * | 2016-01-13 | 2016-04-20 | 同济大学 | Braking system for freight train |
| CN105501247B (en) * | 2016-01-13 | 2017-11-07 | 同济大学 | A kind of brakes for goods train |
| CN106184169A (en) * | 2016-08-10 | 2016-12-07 | 广西柳工机械股份有限公司 | Engineering machinery hydraulic brakes |
| CN107972650A (en) * | 2017-08-04 | 2018-05-01 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic-pneumatic composite braking system for the protection of flame proof rubber tyre vehicle band door |
| CN107972650B (en) * | 2017-08-04 | 2020-07-03 | 中国煤炭科工集团太原研究院有限公司 | Hydraulic-pneumatic composite braking system with door protection for explosion-proof rubber-tyred vehicle |
| CN107650895B (en) * | 2017-08-30 | 2020-02-14 | 中国煤炭科工集团太原研究院有限公司 | Forward and reverse logic double-loop brake control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203496879U (en) | Double-loop braking system of internal combustion tractor | |
| CN102120447B (en) | Forklift hydraulic system matched with multi-functional wet brakes | |
| CN201745568U (en) | Heavy mineral dump truck brake control system | |
| CN204845912U (en) | Motor bus safe auxiliary system that traveles | |
| CN106080564B (en) | The wet brake system of engineering dump truck double-loop air braking | |
| CN110588617B (en) | Control system for realizing driving and emergency parking braking functions of front wheels and rear wheels of explosion-proof vehicle | |
| CN204020862U (en) | Electric transmission articulated truck brake system | |
| CN103264691B (en) | Brake system of empty container forklift | |
| CN102785652A (en) | Integrated control system of wheel type engineering machine | |
| CN102717788A (en) | Braking device of heavy-duty mining dump truck | |
| CN105501247A (en) | Braking system for freight train | |
| CN202764956U (en) | Wheel type engineering machinery integrated control system | |
| CN104494587A (en) | Brake protection system of two-way driving anti-explosion rubber-tired vehicle | |
| CN209521675U (en) | The efficient braking system of heavy-duty commercial vehicle | |
| CN103386958B (en) | Rear axle braking device, axle braking system and method as well as vehicle | |
| CN204323314U (en) | Bidirectional driving flame proof rubber tyre vehicle brake protecting system | |
| CN101863270A (en) | Hydraulic brake device of dumper for mining | |
| CN103253253B (en) | A kind of split type multi-axial cord hydraulic pressure bogie hydraulic brake system | |
| CN210618109U (en) | Electronic hydraulic parking system | |
| CN208344206U (en) | A kind of high-speed loading machine emergency braking system with trailer | |
| CN203946079U (en) | A kind of superimposed trailer and brake system thereof | |
| CN202574192U (en) | Pneumatic and electric dual-purpose multifunctional brake control device | |
| CN202847676U (en) | All hydraulic brake system of telehandler | |
| CN203819220U (en) | Parking brake system of trailer for underground coal mine | |
| CN2928613Y (en) | Double pipeline gas-liquid brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |