CN201304985Y - Brake system for trailer - Google Patents
Brake system for trailer Download PDFInfo
- Publication number
- CN201304985Y CN201304985Y CNU2008201924666U CN200820192466U CN201304985Y CN 201304985 Y CN201304985 Y CN 201304985Y CN U2008201924666 U CNU2008201924666 U CN U2008201924666U CN 200820192466 U CN200820192466 U CN 200820192466U CN 201304985 Y CN201304985 Y CN 201304985Y
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- China
- Prior art keywords
- hydraulic
- actuating cylinder
- trailer
- brake system
- hydraulic actuating
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Abstract
The utility model relates to the technical field of automobile brake systems and in particular relates to a brake system for a trailer. Aiming at solving the problem that in the prior art, when the traction apparatus has no air pressure source or hydraulic pressure source or when the air pressure source and hydraulic pressure source do not have sufficient power, the brake device driven by air pressure and hydraulic pressure can not meet the function requirements, the utility model provides a brake system for a trailer, which comprises a hydraulic part and a mechanical part. The hydraulic part comprises an electric oil pump, a check valve, a pressure relay, an electromagnetic reversing valve, a hydraulic cylinder and an oil storage tank. The mechanical part comprises a camshaft installed on the wheels of the trailer, a spring swing arm, a hydraulic cylinder swing arm and a brake spring, which are mounted on the camshaft. With the brake system, no matter the tractor has an air pressure source or hydraulic pressure source or not, the trailer can be in normal use and can be more convenient and flexible to use. The brake system can absolutely replace the old brake system of the trailer.
Description
Technical field
The utility model relates to the brake system of car technical field, is specifically related to a kind of trailer brake system.
Background technology
Traditional trailer brake system, take two kinds of type of drive mostly: air pressure drives, hydraulic-driven.
The most commonly used is the air pressure type of drive: provide source of the gas by tractor truck, the air receiver that is installed on the trailer is put on the air, promote compressed air brake cylinder by the pressurized air in the air receiver, implement braking thereby promote drg.This brake mode has significant disadvantage: need tractor truck that pneumatic supply is arranged, if there is not the vehicle of air compression plant can't use this brake equipment; It is enough big that the power of air compressor is wanted, because the source of the gas of tractor truck need drive more compressed air brake cylinder, if the under power of compressor can cause air pressure deficiency regular in the air receiver, makes the compressed air brake cylinder power output reduce and brake failure.
Hydraulic driving mode is to provide hydraulic power source by tractor truck, by the hydraulic-driven brake cylinder, promotes drg and implements braking.This hydraulic braking mode is very strict to the requirement of hydraulic power source, implements glancing impact simultaneously when trailer and tractor truck, and hydraulic power source need promote more brake cylinder, and this just needs hydraulic power source to have bigger horsepower output.If hydraulic power source horsepower output deficiency can cause the brake cylinder power output to reduce and brake failure.
When draw gear did not have the underproof of pneumatic supply, hydraulic power source or pneumatic supply, hydraulic power source, traditional air pressure drove, the hydraulic drive type brake equipment can not satisfy its functional requirement.
Summary of the invention
For solve exist in the prior art when draw gear does not have the underproof of pneumatic supply, hydraulic power source or pneumatic supply, hydraulic power source, the defective that air pressure drives, the hydraulic drive type brake equipment can not satisfy its functional requirement, the utility model provides a kind of trailer brake system, makes trailer brake system fundamentally break away from dependence to pneumatic supply, hydraulic power source.
In order to achieve the above object, the technical solution adopted in the utility model is: a kind of trailer brake system, comprise hydraulic part and mechanics, its special character is: described hydraulic efficiency pressure system comprises electric oil pump, check valve, pressure relay, solenoid directional control valve, hydraulic actuating cylinder and petrol storage tank; The input end of described electric oil pump links to each other by pipeline with petrol storage tank, and check valve, pressure relay and solenoid directional control valve are successively set on the pipeline between electric oil pump mouth and the hydraulic actuating cylinder, and the input interface of hydraulic actuating cylinder is connected with petrol storage tank; Described mechanics comprises the camshaft that is installed on the wheel, is installed in spring swing arm and hydraulic actuating cylinder swing arm and retarding spring on the camshaft; One end of described hydraulic actuating cylinder is connected with hydraulic actuating cylinder swing arm pin, and the other end and vehicle bridge are hinged; Described retarding spring one end is connected with the spring swing arm, and the other end is connected with vehicle bridge by the spring pull bar.
Above-mentioned check valve mouth is provided with energy storage.
Be provided with by pass valve and hand change over valve between the return opening of above-mentioned check valve mouth and petrol storage tank.
Compared with prior art, the beneficial effect of technical solutions of the utility model generation is as follows:
Use trailer of the present utility model, no matter whether tractor truck has pneumatic supply or hydraulic power source, can use normally, and it is more flexible to make trailer use, can replace traditional trailer brake system fully, achievements conversion of the present utility model has suitable wide prospect.
Description of drawings
Fig. 1 is the utility model hydraulic part schematic diagram;
Fig. 2 is the utility model mechanics erection plan;
Fig. 3 is the utility model circuit diagram.
The 1-electric oil pump, 2-check valve, 3-energy storage, 4-pressure relay, 5-Elactro magnetic commutator, 6-petrol storage tank, the 7-by pass valve, 8-hand change over valve, 9-hydraulic actuating cylinder, the swing arm of 10-spring, the swing arm of 11-hydraulic actuating cylinder, the 12-camshaft, 13-retarding spring, 14-spring pull bar, 15-vehicle bridge, 16-wheel
The specific embodiment
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is done detailed description.
The utility model provides a kind of trailer brake system, comprises hydraulic part and mechanics.
Referring to Fig. 1, described hydraulic efficiency pressure system comprises electric oil pump 1, check valve 2, pressure relay 4, solenoid directional control valve 5, hydraulic actuating cylinder 9 and petrol storage tank 6; The input end of described electric oil pump 1 and petrol storage tank 6 link to each other by pipeline, and check valve 2, pressure relay 4 and solenoid directional control valve 5 are successively set on the pipeline between electric oil pump 1 mouth and the hydraulic actuating cylinder 9, and the input interface of hydraulic actuating cylinder 9 is connected with petrol storage tank 6; Described check valve 2 mouths are provided with energy storage 3; Be provided with by pass valve 7 and hand change over valve 8 between the return opening of described check valve 2 mouths and petrol storage tank 6.
Since each Hydraulic Elements more or less have an internal leakage, cause the pressure of hydraulic actuating cylinder 9 to reduce, be transformed into conducting state whenever pressure is reduced to pressure relay 4, electric oil pump 1 can work once, guarantee that the pressure of hydraulic actuating cylinder 9 is unlikely too low; Install behind the energy storage 3, can slow down the speed that pressure reduces because leak in the hydraulic actuating cylinder greatly, avoid the frequent starting of electric oil pump 1.If in the pipeline by pass valve 7 is not installed, when damaging appears in certain Hydraulic Elements, damage as pressure relay 4, can not be transformed into by state, the pressure in the hydraulic tubing might increase to very big, can damage electric oil pump 8 elements such as grade; After by pass valve 7 had been installed, pressure occurred unusually when high in the pipeline, can rush down pressure by by pass valve 7, made fluid pressure in the pipeline unlikely too high and damage element.When the needs manually operated remains on braking mode with trailer, hand change over valve 8 opened get final product.
Referring to Fig. 2, described mechanics comprises the camshaft 12 that is installed on the wheel 16, is installed in spring swing arm 10 and hydraulic actuating cylinder swing arm 11 and retarding spring 13 on the camshaft 12; One end of described hydraulic actuating cylinder 9 is connected with hydraulic actuating cylinder swing arm 11 pins, and the other end and vehicle bridge 15 are hinged; Described retarding spring 13 1 ends are connected with spring swing arm 10, and the other end is connected with vehicle bridge 15 by spring pull bar 14; Wheel 16 is fixed on the vehicle bridge 15, and the braking of wheel 16 and brake off are by camshaft 12 controls.
When the liquid in the hydraulic actuating cylinder 9 did not have pressure, effect lower compression to the camshaft 12 that hydraulic actuating cylinder 9 is upheld pulling force at retarding spring 13 turned to wheel 16 and is braking mode; When the pressure input was arranged in the hydraulic actuating cylinder 9, hydraulic actuating cylinder 9 overcame the extension pulling force of retarding spring 13, made hydraulic actuating cylinder 9 elongations, drove with hydraulic actuating cylinder swing arm 11 bonded assembly camshafts 12 and turned to wheel 16 brake offs.
Referring to Fig. 3, the power supply of tractor truck links to each other with electric oil pump 1, and electric energy is converted into the hydraulic pressure energy, promotes hydraulic actuating cylinder 9 and carries out trailer braking protection valve; Tractor truck brake signal lamp links to each other with solenoid directional control valve 5, and the electric signal in the tractor truck brake signal lamp is controlled the braking and the brake off of trailer by solenoid directional control valve 5.
When tractor truck did not start, the power supply of tractor truck did not have output voltage, and this moment, electric oil pump 1 was not worked, and did not all have pressure in each Hydraulic Elements, hydraulic actuating cylinder 9 no-output power, and camshaft 12 remains on wheel 16 braking modes under retarding spring 13 tension.
After tractor truck started, the tractor truck power supply began output voltage, because pressure is zero in the pipeline that pressure relay 4 is installed, pressure relay 4 is positioned at conducting state, makes electric oil pump 1 start working; The hydraulic oil of electric oil pump 1 output, flow in the hydraulic actuating cylinder 9 by solenoid directional control valve 5 by check valve 2, makes hydraulic actuating cylinder 9 elongations, makes wheel 16 brake offs.Behind wheel 16 brake offs, hydraulic actuating cylinder 9 can't continue elongation, and electric oil pump 1 works on, and after oil pressure continues to increase to certain pressure in the pipeline at check valve 2 places, triggers pressure relay 4 and is transformed into off condition, and electric oil pump 1 quits work.Because the delivery port of electric oil pump 1 is equipped with check valve 2, so the high pressure oil in the hydraulic actuating cylinder 9 can't be back in the petrol storage tank 6 by electric oil pump 1, hydraulic actuating cylinder 9 is keeping high pressure always, and wheel 16 remains on the brake off state.
After the chaufeur of tractor truck is stepped on brake, the brake signal lamp of tractor truck is bright, brake signal is switched in the solenoid directional control valve 5, the A mouth and the T mouth of check valve 5 are connected, the input interface of hydraulic actuating cylinder 9 directly is switched in the petrol storage tank 6, and the pressure in the hydraulic actuating cylinder 9 disappears, and hydraulic actuating cylinder 9 shortens under retarding spring 13 tension, camshaft 12 turns to wheel 16 braking modes, has finished trailer along with tractor truck is braked together.
The above only is preferred embodiment of the present utility model, and not in order to restriction the utility model, common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacement all should be included in the protection domain of the present utility model.
Claims (3)
1, a kind of trailer brake system comprises hydraulic part and mechanics, it is characterized in that: described hydraulic efficiency pressure system comprises electric oil pump, check valve, pressure relay, solenoid directional control valve, hydraulic actuating cylinder and petrol storage tank; The input end of described electric oil pump links to each other by pipeline with petrol storage tank, and check valve, pressure relay and solenoid directional control valve are successively set on the pipeline between electric oil pump mouth and the hydraulic actuating cylinder, and the input interface of hydraulic actuating cylinder is connected with petrol storage tank; Described mechanics comprises the camshaft that is installed on the wheel, is installed in spring swing arm and hydraulic actuating cylinder swing arm and retarding spring on the camshaft; One end of described hydraulic actuating cylinder is connected with hydraulic actuating cylinder swing arm pin, and the other end and vehicle bridge are hinged; Described retarding spring one end is connected with the spring swing arm, and the other end is connected with vehicle bridge by the spring pull bar.
2, a kind of trailer brake system according to claim 1, it is characterized in that: described check valve mouth is provided with energy storage.
3, a kind of trailer brake system according to claim 1 is characterized in that: be provided with by pass valve and hand change over valve between the return opening of described check valve mouth and petrol storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201924666U CN201304985Y (en) | 2008-11-17 | 2008-11-17 | Brake system for trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201924666U CN201304985Y (en) | 2008-11-17 | 2008-11-17 | Brake system for trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201304985Y true CN201304985Y (en) | 2009-09-09 |
Family
ID=41097447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201924666U Expired - Fee Related CN201304985Y (en) | 2008-11-17 | 2008-11-17 | Brake system for trailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201304985Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438780A (en) * | 2016-10-25 | 2017-02-22 | 广东技术师范学院 | Hydraulic emergency braking system |
| CN108501907A (en) * | 2018-05-08 | 2018-09-07 | 南京理工大学 | A kind of active trailer brake system |
| CN112477912A (en) * | 2020-11-26 | 2021-03-12 | 湘潭市恒欣实业有限公司 | Passive braking system of railway vehicle |
-
2008
- 2008-11-17 CN CNU2008201924666U patent/CN201304985Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438780A (en) * | 2016-10-25 | 2017-02-22 | 广东技术师范学院 | Hydraulic emergency braking system |
| CN108501907A (en) * | 2018-05-08 | 2018-09-07 | 南京理工大学 | A kind of active trailer brake system |
| CN112477912A (en) * | 2020-11-26 | 2021-03-12 | 湘潭市恒欣实业有限公司 | Passive braking system of railway vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20141117 |
|
| EXPY | Termination of patent right or utility model |