CN201573640U - Braking control valve for composite braking of motor vehicles - Google Patents
Braking control valve for composite braking of motor vehicles Download PDFInfo
- Publication number
- CN201573640U CN201573640U CN2009202402846U CN200920240284U CN201573640U CN 201573640 U CN201573640 U CN 201573640U CN 2009202402846 U CN2009202402846 U CN 2009202402846U CN 200920240284 U CN200920240284 U CN 200920240284U CN 201573640 U CN201573640 U CN 201573640U
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- Prior art keywords
- control valve
- braking
- oil
- cylinder
- hydraulic
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Abstract
The utility model discloses a braking control valve for composite braking of motor vehicles, which is formed by compounding a hydraulic control valve and a pneumatic control valve, wherein the valve core of the hydraulic control valve is connected with the valve core of the pneumatic control valve and controls the turning-on and off of a gas circuit of the pneumatic control valve, and a sealing mechanism is arranged between two valve bodies. The hydraulic control valve is provided with an oil inlet and a gas vent, and the oil inlet is connected with an oil way of a motor vehicle by a pipeline. The pneumatic control valve is provided with a gas inlet and a gas outlet, and the gas outlet is connected with an air pressure braking device of the motor vehicle. The braking control valve controls the turning-on and off of the gas circuit by a hydraulic oil way, realizing the matching control of oil gas before and back the motor vehicle, and achieving the purpose of composite braking. The braking control valve has the advantages of simple control mode, good control effect, simple and compact structure and low manufacturing cost.
Description
Technical field
The utility model relates to the brake control valve that a kind of motor vehicle brake is used, and the brake control valve of the motor vehicle of oil pressure and air pressure composite brakig is adopted in bridge braking in particularly a kind of front and back.
Background technology
Present domestic light card automobile, single cylinder low speed load-carrying vehicle, multi-cylinder low speed load-carrying vehicle, trac., three wheeled motor vehicle, battery-driven car, the composite brakig mode of a kind of later-model preceding oil back gas has appearred in the braking of power actuated vehicles such as motor bike, adopt its propons of power actuated vehicle of this kind brake mode to adopt hydraulic braking, back axle adopts compression air brake, this kind composite brakig form has overcome pure compression air brake complex structure and has been easy to limited, the little defective of pure hydraulic braking braking force, it is big to draw the compression air brake braking force, be difficult for limited advantage on the steady structure of hydraulic braking, make power actuated vehicle that the failure-free deceleration and stopping performance be arranged, and reduce the cost of car load.Brake control valve is the key device of the coupling control of oil back gas before realizing in brake system, does not also have valve and this system support of this function at present.
The utility model content
The purpose of this utility model is exactly at the control cock that does not have this function in the prior art, and the brake control valve that provides a kind of power actuated vehicle composite brakig to use, this brake control valve control is effective, has well solved the problem of front and back oil gas coupling control in the composite brakig.
The utility model is achieved by the following technical solution: the brake control valve that a kind of power actuated vehicle composite brakig is used, it is composited by fluid control valve and pneumatic control valve, wherein the spool of fluid control valve and the spool of pneumatic control valve are connected and control the on/off of the gas circuit of pneumatic control valve, be provided with sealing mechanism between two valve bodies, fluid control valve is provided with oil inlet and relief port, its oil inlet is connected with the oil circuit of self-propelled vehicle by pipeline, pneumatic control valve is provided with admission port and air extractor duct, and its air extractor duct is connected with the air braking systems of self-propelled vehicle by pipeline.
The utility model is that the spool that the action by the spool of fluid control valve drives the pneumatic control valve that is attached thereto moves simultaneously, motion by the pneumatic control valve spool is switched on or switched off the gas circuit of pneumatic control valve, reach when propons oil is stopped by the action of oil circuit control gas circuit, the purpose of realization back axle compression air brake.
Fluid control valve in the utility model and pneumatic control valve can adopt the form of hydraulic ram and cylinder respectively, the piston rod of hydraulic ram is connected with the piston of cylinder, and pull back spring is established at the rear portion of cylinder piston, and this kind version is simple, compact, be easy to processing, cost is low.Hydraulic oil promotes the cylinder piston motion by the piston of hydraulic actuating cylinder, the motion of cylinder piston makes admission port and air extractor duct realize being switched on or switched off, thereby realization compression air brake, pull back spring is used for after hydraulic oil does not have pressure, cylinder piston and oil cylinder piston are pushed back to initial condition, finish one stroke.
The utility model is by the break-make of hydraulic circuit control gas circuit, and the coupling of oil gas is controlled before and after realizing, its mode is simple, control effective, can reach the purpose that realizes the back axle compression air brake when propons oil is stopped, and the utility model is simple in structure, compact, tooling cost is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic diagram of motor vehicle braking systems in the specific embodiment.
Among the figure, 1, cylinder, 2, pull back spring, 3, air extractor duct, 4, piston, 5, piston rod, 6, admission port, 7, sealing mechanism, 8, hydraulic ram, 9, piston, 10, relief port, 11, oil inlet, 12, hydraulic braking wheel cylinder, 13, master brake cylinder, 14, pedal arm, 15, storage tank, 16, brake control valve, 17, pneumatic element, 18, compressed air brake cylinder, 19, hydraulic brake system, 20, air pressure assisted device device, 21, the air pressure feedway, 22, air braking systems.
The specific embodiment
Embodiment below by indefiniteness also is further described the utility model in conjunction with the accompanying drawings:
As shown in Figure 1, the brake control valve that a kind of power actuated vehicle composite brakig is used, it is composited by hydraulic ram 8 and cylinder 1, wherein the piston 9 of hydraulic ram is connected by piston rod 5 with the piston 4 of cylinder, piston 4 rear portions are provided with between 2, two cylinder bodies of pull back spring and realize sealing by sealing mechanism 7.The cylinder body of hydraulic ram 8 is provided with oil inlet 11 and relief port 10, and the cylinder body of cylinder 1 is provided with admission port 6 and air extractor duct 3.
As shown in Figure 2, it is the schematic diagram of motor vehicle braking systems, its propons adopts hydraulic braking, back axle adopts compression air brake, mainly comprise hydraulic brake system 19, air pressure assisted control setup 20, air pressure feedway 21, air braking systems 22 and brake control valve 16, brake control valve 16 adopts the structure shown in the accompanying drawing 1.By accompanying drawing as can be seen, brake control valve 16 is key devices of realizing oil back gas composite brakig before the power actuated vehicle, and propons oil is stopped for it and the back axle gas loop of stopping links together.
By controlled pedal arm 14, hydraulic braking master cylinder 13 work, and by 12 work of pipeline drive hydraulic braking wheel cylinder, hydraulic brake system 19 work realize the propons hydraulic braking; In controlled pedal arm 14, a liquid loop is connected to brake control valve 16, the motion of the piston 4 by fluid control cylinder 1, make the admission port 6 and the air extractor duct 3 of cylinder realize connecting, pressurized air drives air braking systems 22 work by pneumatic elements such as air pipe and various valves, realizes compression air brake.Total system finally realizes hydraulic pressure, air pressure composite brakig, drag before and after having realized.
The utility model is simple in structure, control effective, well solved in the mechanism of qi motor vehicle composite brakig of preceding oil back before and after the problem of oil gas coupling control, the composite brakig form of oil back gas is widely used on power actuated vehicle before making.
Claims (2)
1. brake control valve that the power actuated vehicle composite brakig is used, it is characterized in that: it is composited by fluid control valve and pneumatic control valve, wherein the spool of fluid control valve and the spool of pneumatic control valve are connected and control the on/off of the gas circuit of pneumatic control valve, be provided with sealing mechanism between two valve bodies, fluid control valve is provided with oil inlet and relief port, its oil inlet is connected with the oil circuit of self-propelled vehicle by pipeline, pneumatic control valve is provided with admission port and air extractor duct, and its air extractor duct is connected with the air braking systems of self-propelled vehicle by pipeline.
2. the brake control valve that power actuated vehicle composite brakig according to claim 1 is used, it is characterized in that: described fluid control valve is a hydraulic ram, described pneumatic control valve is a cylinder, and the piston rod of hydraulic ram is connected with the piston of cylinder, and the rear portion of cylinder piston is provided with pull back spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202402846U CN201573640U (en) | 2009-10-30 | 2009-10-30 | Braking control valve for composite braking of motor vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202402846U CN201573640U (en) | 2009-10-30 | 2009-10-30 | Braking control valve for composite braking of motor vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201573640U true CN201573640U (en) | 2010-09-08 |
Family
ID=42693517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202402846U Expired - Fee Related CN201573640U (en) | 2009-10-30 | 2009-10-30 | Braking control valve for composite braking of motor vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201573640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879394A (en) * | 2014-03-28 | 2014-06-25 | 常州科研试制中心有限公司 | Stopping brake system of trailer used under coal mine shaft |
-
2009
- 2009-10-30 CN CN2009202402846U patent/CN201573640U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879394A (en) * | 2014-03-28 | 2014-06-25 | 常州科研试制中心有限公司 | Stopping brake system of trailer used under coal mine shaft |
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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: 20100908 Termination date: 20151030 |
|
| EXPY | Termination of patent right or utility model |