CN2767264Y - Load proportion sensing valve - Google Patents
Load proportion sensing valve Download PDFInfo
- Publication number
- CN2767264Y CN2767264Y CN 200420112998 CN200420112998U CN2767264Y CN 2767264 Y CN2767264 Y CN 2767264Y CN 200420112998 CN200420112998 CN 200420112998 CN 200420112998 U CN200420112998 U CN 200420112998U CN 2767264 Y CN2767264 Y CN 2767264Y
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- Hydraulic Control Valves For Brake Systems (AREA)
Abstract
The utility model relates to a load-sensing proportional valve, which is used in an automobile brake system. The present automobile brake system has the problems that front and back wheels can not brake synchronously, a vehicle can cause slide and side slip, the effect of braking is unstable, etc. The load-sensing proportional valve of the utility model is a differential diameter type proportioning valve, the load fluctuation of a front and a rear shafts is responded by a load-sensing spring (14) and a conical spring (13), and oil pressure is assigned to a front and a rear wheel cylinders by the load-sensing proportional valve according to a given ratio, so that the front and the rear wheels can produce different brake pressure, the probability of locking the back wheel is reduced and the purpose of ideal braking is achieved. Compared with the prior art, the utility model has the advantages of simple structure, low cost, reliable performance and convenient maintenance.
Description
Technical field
The utility model relates to a kind of load sensing valve, is used for the brake system of automobile.
Background technology
The brake system of automobile is a very important component part of automobile, and crucial effects is played in the normal safety traffic that guarantees vehicle.There is following problem in existing brake system of car: automobile front and back wheel brake is asynchronous, four-wheel braking power unreasonable distribution, cause wheel to send out to embrace, slippage, car body is amesiality, whipping, braking not steadily, braking effect is poor.Now some luxury cars are for addressing the above problem, employing ABS electronics anti-skid brake system, but ABS system architecture complexity, manufacturing cost height, maintenance difficult and be difficult to popularize.
Summary of the invention
The utility model proposes a kind of load sensing valve in order to solve the shortcoming that exists in the present brake system of car.The effect of this apportioning valve mainly is according to the front and back change of axle weight, and brake wheel cylinder before and after according to given ratio oil pressure being assigned to makes front and back wheel produce different braking pressure, to reduce the probability of rear lock, increases the safety factor in the vehicle traveling process.The given load sensing valve of the utility model is a difference footpath apportioning valve, as shown in Figure 1, there is a support plate (8) lower end of valve body (1), support plate connects with the same lever of a bearing pin (7) (9), lever is also successively with the piston lower end, and cone-shaped spring (13), sense are carried spring (14) and be connected, and valve body has two input hydraulic fluid ports (2), (5), an output oil port (4), valve body top have a handle (11) to link to each other with cone-shaped spring top by a bolt (12).At the valve body two ends erecting bed hole (6), (10) are arranged respectively, be used to be installed in vehicle chassis.Principle of work of the present utility model is: load sensing valve is fixed on the vehicle chassis, sense is carried the spring other end and is installed on the vehicle rear axle, variation along with loading state of vehicle, vehicle chassis and axletree relative position change, sense is carried spring length and is also changed thereupon, therefore, cause the power of cone-shaped spring and act on the piston power also correspondingly personal comments carry the variation of spring force and change, thereby set up the corresponding relation of piston load and vehicle load variation.When the hydraulic pressure from master brake cylinder is entered in the valve body by input port, output to brake wheel cylinder via valve port between piston and the valve and output oil port, when this moment, the application force of hydraulic action on piston was less than the load force of piston, piston is subjected to the effect valve port of load to be in opening, hydraulic pressure from master cylinder is directly passed to wheel cylinder, this moment, load sensing valve was in off working state, increase along with the input pressure, when the spring of surpass setting Dao And as hydraulic action Da gives tight power, piston moves down, when input is pressed and output is pressed when being increased to certain value, valve port between piston and valve is closed, piston is in state of equilibrium, when if input hydraulic pressure continues to increase, the hydraulic action that acts on the piston input end increases, when greater than the application force on the mouth piston, state of equilibrium is broken, piston moves up, valve port is opened, and the input end transmission of pressure is given mouth, and at this moment input hydraulic pressure is along with rising, piston returns to the position of balance again, when input hydraulic pressure is stabilized in a value, when output hydraulic pressure also is stabilized in a certain value simultaneously, exports hydraulic pressure and also be stabilized in a certain analog value simultaneously.Because difference footpath relation, there is a decompression coefficient in output hydraulic pressure, the braking force that is trailing wheel is less than front-wheel (it is directly to be passed by master cylinder to come that the braking of front-wheel is pressed), realized being pressed onto the front and back wheel cylinder in the automatic matching fluid of setting of ratio, make front and back wheel produce different brake-pressures, to reduce the probability of rear lock, reach desirable braking purpose, improve reliability and the safety of automobile in braking procedure.The relative prior art of the utility model has simple in structure, and low cost of manufacture, dependable performance are keeped in repair characteristics such as easy.
Description of drawings
Accompanying drawing 1 is a semi-sictional view work scheme drawing of the present utility model, and accompanying drawing 2 is accompanying drawing 1 partial enlarged view.(1) is valve body among the figure, and (2), (5) are the input hydraulic fluid port, and (3) are piston, (4) be output oil port, (6), (10) are the erecting bed hole, and (7) are bearing pin, (8) be support plate, (9) are lever, and (11) prop up handle for valve body, (12) be bolt, (13) are cone-shaped spring, and (14) carry spring for sense, (15) be back axle, (16) are O type circle, and (17) are valve port, (18) be the valve body inner spring, (19) are seal ring.
The specific embodiment
Accompanying drawing 1 is for using the load sensing valve at the Feitian BJ1022V3JA3-2 of Beijing Automobile Workshop, it is LH3.2 * 32 * 24.5 that spring is carried in sense, cone-shaped spring is LH3 * 29 * 7, load sensing valve is installed on the car chassis, sense is carried under the spring and is terminated on the automobile axle, two inputs of load sensing valve hydraulic fluid port links to each other with the automobile master cylinder, and output oil port links to each other with the trailing wheel brake cylinder.
Claims (1)
1. load sensing valve that is used for brake system of car, by valve body, input hydraulic fluid port, output oil port, piston, seal ring are formed, it is characterized in that: valve body lower end has a support plate (8), connecting a lever (9) lever with bearing pin (7) on the support plate is connected with piston lower end, cone-shaped spring (a 13) sense year spring (14) successively, valve body has two input hydraulic fluid ports (2), (5), an output oil port (4), a handle (11) is arranged at valve body top, link to each other with cone-shaped spring top by a bolt (12), respectively there are an erecting bed hole (6), (10) in the valve body two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420112998 CN2767264Y (en) | 2004-11-05 | 2004-11-05 | Load proportion sensing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420112998 CN2767264Y (en) | 2004-11-05 | 2004-11-05 | Load proportion sensing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2767264Y true CN2767264Y (en) | 2006-03-29 |
Family
ID=36681122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420112998 Expired - Fee Related CN2767264Y (en) | 2004-11-05 | 2004-11-05 | Load proportion sensing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2767264Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452383A (en) * | 2010-11-03 | 2012-05-16 | 中国第一汽车集团公司 | Load sensing valve system of vehicle with independent suspension |
| CN105257903A (en) * | 2015-10-15 | 2016-01-20 | 安徽江淮汽车股份有限公司 | Load-sensing proportioning valve capable of displaying pressure |
| CN105346530A (en) * | 2015-10-26 | 2016-02-24 | 江苏理工学院 | Braking force nonlinear distribution load sensing valve of front brake and rear brake of vehicle |
-
2004
- 2004-11-05 CN CN 200420112998 patent/CN2767264Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452383A (en) * | 2010-11-03 | 2012-05-16 | 中国第一汽车集团公司 | Load sensing valve system of vehicle with independent suspension |
| CN105257903A (en) * | 2015-10-15 | 2016-01-20 | 安徽江淮汽车股份有限公司 | Load-sensing proportioning valve capable of displaying pressure |
| CN105346530A (en) * | 2015-10-26 | 2016-02-24 | 江苏理工学院 | Braking force nonlinear distribution load sensing valve of front brake and rear brake of vehicle |
| WO2017071484A1 (en) * | 2015-10-26 | 2017-05-04 | 江苏理工学院 | Load-sensing valve for non-linear distribution of braking forces of front and rear brakes of vehicle |
| CN105346530B (en) * | 2015-10-26 | 2018-09-28 | 江苏理工学院 | A kind of automobile-used forward and backward non-linear distribution load sensing valve of brake braking force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060329 Termination date: 20121105 |