CN1847066B - Composite shuttle-valve oil cylinder and the brake executing mechanism therewith for automatic control vehicle reducing system - Google Patents
Composite shuttle-valve oil cylinder and the brake executing mechanism therewith for automatic control vehicle reducing system Download PDFInfo
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- CN1847066B CN1847066B CN2005100566797A CN200510056679A CN1847066B CN 1847066 B CN1847066 B CN 1847066B CN 2005100566797 A CN2005100566797 A CN 2005100566797A CN 200510056679 A CN200510056679 A CN 200510056679A CN 1847066 B CN1847066 B CN 1847066B
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Abstract
One kind of composite shuttle valve oil cylinder consists of a shuttle valve and a rubber diaphragm oil cylinder. One kind of executing mechanism for automatically controlled vehicle reducing system consists of one composite shuttle valve oil cylinder, one hydraulic energy accumulating unit and one vehicle braking system. The composite shuttle valve oil cylinder serves as the connecting part between the automatically controlled vehicle reducing system and the vehicle braking system.
Description
Affiliated field
The present invention is the automatic control vehicle deceleration system brake actuator of a kind of shuttle valve composite oil cylinder and composition thereof, relates to automobile hydraulic service braking system automatic control braking technique field.
Background technology
Development, progress along with automotive technology, automatic control technology more and more is applied to automobile, automatic control deceleration actuating unit that important content is an automobile on the automobile automatic control technology, as the automatic deceleration mechanism in the preventing collision technology of automobile, available technology adopting purpose made service brake parts (as special-purpose master brake cylinder) are realized, these special parts are reserved with the special purpose interface that automatic control is slowed down, and are incompatible with common service braking system.And for the automobile that adopts common service braking system, under the prerequisite that does not change existing running braking system part, how the automatic control deceleration system suitably is connected with existing service braking system, utilizing the brake actuator spare of existing running brake system (part) as the automatic control deceleration system, is a problem that has research and development to be worth.
Technical scheme in the existing public technology adopts motor or electromagnet to drag cable wire, spur the method for running brake pedal again by cable wire, realize being connected of autonomous cruise speed system and running brake system, this method exists that method is original, reaction is slow, reliability is low and to the defectives such as service brake generation interference of chaufeur.Related to a kind of triple valve (essence is the pressure selector valve) in the patent of invention open source literature of China Patent No. ZL00101579.6, this triple valve series connection inserts in the running brake line, have the advantages that reaction is fast, connection is succinct, but this triple valve is ganged up the hydraulic tubing of running brake system and autonomous cruise speed system, two system's hydraulic mediums mix, and performance has certain checking and balance, influence.The Chinese invention patent application of publication number CN1215005A discloses a kind of stop mechanism parallel with the running brake system, this mechanism is by external hydraulic ram, directly the propelling vehicle brake pedal produces braking force, exists external oil cylinder that difficulty and the defective of disturbing driver's service brake are installed.The Chinese invention patent application of publication number CN1473730A then discloses a kind of braking mechanism that is connected in the self-propelled vehicle brake circuit, this mechanism is made up of multi-parts such as electric-controlled hydraulic directional control valve, check valve, Hydraulic Pumps, similar automobile ABS hydraulic efficiency governing loop exists complex structure, accuracy of manufacture requirement height, with high costs and mechanism's volume big, the defective of difficulty is installed.
Summary of the invention
The objective of the invention is to propose the automatic control vehicle deceleration system brake actuator of a kind of shuttle valve composite oil cylinder and composition thereof.This shuttle valve composite oil cylinder is composited by diaphragm of rubber oil cylinder and shuttle valve (being also referred to as the pressure selector valve), the diaphragm of rubber oil cylinder is isolated running hydraulic braking system and automatic control deceleration hydraulic efficiency pressure system fully, and utilize the oil cylinder volume-variation to transmit hydraulic coupling, shuttle valve is then born when the automatic control deceleration system is worked reliable by automobile brake master cylinder and service brake hydraulic tubing passage, and be communicated with automatic control deceleration hydraulic efficiency pressure system and running hydraulic braking system passage simultaneously, make automatic control deceleration hydraulic efficiency pressure system produce braking force by propelling vehicle service brake wheel cylinder, realize the function of automatic control braking deceleration.This shuttle valve composite oil cylinder series connection inserts in the hydraulic tubing of automobile brake master cylinder following (connection brake cylinder), does not interfere or influence the performance of running brake system, and the conversion of two hydraulic efficiency pressure systems is smoothly smooth and easy during driver's service brake.
Automatic control vehicle deceleration system brake actuator is made up of shuttle valve composite oil cylinder, energy-storage hydraulic unit and running brake system (remainder except that master brake cylinder), and wherein the shuttle valve composite oil cylinder is the attaching parts and the working medium isolating device of automatic control vehicle deceleration system and running brake system; The hydraulic energy-accumulating unit is that the braking force of automatic control vehicle deceleration system produces, output device; Running brake system (remainder except that master brake cylinder) is the final braking deceleration actuating unit of automatic control vehicle deceleration system.
Technical solution of the present invention compared with prior art has following beneficial effect: the one, have suitability widely, and for the existing automobile that adopts the hydraulic pressure service braking system,, all have suitability completely no matter whether have the ABS function; The 2nd, the shuttle valve composite oil cylinder adopts steel ball sealing and diaphragm of rubber isolation structure, and the reliable nothing wearing and tearing of sealing have excellent safety energy and long life; The 3rd, volume is little in light weight, is convenient to install; The 4th, with low cost, be beneficial to large-scale promotion and use.
Description of drawings
Fig. 1 is the topology view of shuttle valve composite oil cylinder.
Fig. 2 is the partial view of shuttle valve lower port drain pan.
Fig. 3 is an automatic control vehicle deceleration system brake actuator schematic diagram.
Fig. 4 is the automatic control vehicle deceleration system brake actuator schematic diagram that utilizes the automobile power steering hydraulic oil flow.
The specific embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is elaborated.Fig. 1 is the topology view of shuttle valve composite oil cylinder, form by five parts such as barrier film oil cylinder housing 1, shuttle valve valve body 2, diaphragm of rubber 3, steel ball 4 and diaphragm of rubber embedding iron 5, wherein the right figure of Fig. 1 is initial or driver's service brake state, state when Fig. 1 left side figure is the automatic control deceleration, and principle of work and process are:
Shown in the right figure of Fig. 1, under the running braking mode, the combined action of steel ball 4 gravitates and running brake fluid pressure, be positioned at the shuttle valve lower port, the artificial design of this lower port leaves the low discharge oil groove, as shown in Figure 2, this oil groove is beneficial to hydraulic medium to the mobile filling of barrier film oil cylinder, guarantee to be full of braking liquid in the barrier film oil cylinder, and make barrier film reply initial position, brake fluid pressure makes barrier film be close to the oil cylinder housing, the embedded iron of barrier film stops barrier film to flow in the hole, because the braking liquid of retaining in the incompressibility of liquid, barrier film oil cylinder does not produce any influence to the running brake system, running braking mode of operation is normal.
Shown in the left figure of Fig. 1, when the automatic control vehicle deceleration system is worked, its hydraulic oil flow enters separator bottom by oil cylinder lower housing portion interface, promote the diaphragm of rubber upward movement, the motion of barrier film causes oil cylinder inside brake liquid to flow fast, its shuttle valve lower port place fast oil stream pushes steel ball moment to the shuttle valve upper port, master brake cylinder inside brake liquid beyond the upper port is in atmospheric pressure state, steel ball seals the shuttle valve upper port because of the external and internal pressure difference, connecting line by automobile brake master cylinder and brake cylinder, along with the continuation of barrier film is moved, line pressure will continue to rise, and produce braking force until the propelling vehicle brake cylinder.In whole automatic control deceleration system on period, all keep certain pressure in brake piping and the barrier film oil cylinder, steel ball will keep sealing shuttle valve upper port state, after the automatic control deceleration system quits work, hydraulic pressure disappears in the pipeline, and the steel ball by gravity is got back to the lower end sealing surface, because the lower end sealing surface is reserved with oil duct, can guarantee that barrier film oil cylinder volume is returned to initial condition, for next time automatic control brake snub provides the volume guarantee.
When running braking and automatic control deceleration system are worked simultaneously, or automatic control deceleration system when work driver exercises service brake again, two systems are with synergy, or select the system of elevated pressures to serve as braking work usefulness, or by the job procedure of computer controller (ECU) control two systems of automatic control deceleration system according to the difference of pressure of two systems.
Fig. 3 is an automatic control vehicle deceleration system brake actuator schematic diagram, and automatic control vehicle deceleration system brake actuator is made up of hydraulic energy-accumulating unit 6, running brake system (except that master brake cylinder) 7 and shuttle valve composite oil cylinder 8 three parts, and principle of work is:
The hydraulic energy-accumulating unit is made up of two-position three way electromagnetic hydraulic pressure directional control valve 13, energy storage 14, check valve 15, pressure relay 16, hydraulic pump motor 17, Hydraulic Pump 18, petrol storage tank 19, hydraulic pump motor 17 must turn round under the electric situation, the drive Hydraulic Pump rotates, hydraulic oil is pressed into the energy storage accumulation of energy, after pressure reaches setting value, pressure relay disconnects the hydraulic pump motor circuit, and the hydraulic energy-accumulating unit is in packing state.But when pressure reduced, pressure relay was closed again, and the hydraulic pump motor running makes pressure reach setting value once more, guaranteed that accumulation of energy pressure stands ready.
When the automatic control deceleration system is worked, computer controlled processing unit (ECU) the output servo-control signal of automatic control deceleration system, electromagnetic hydraulic pressure directional control valve 13 gets electric commutation, the moment output of energy storage internal pressure oil, promote the motion of barrier film oil cylinder inner septum by the road, diaphragm movement causes the oil cylinder volume-variation, and hydraulic coupling to the brake cylinder transmission, is realized the function that automatic control is slowed down.When the automatic control deceleration system quits work, electromagnetic hydraulic pressure directional control valve return, barrier film oil cylinder internal pressure oil flows back to petrol storage tank through hydraulic directio control cock refluxing opening, and the barrier film oil cylinder returns back to initial position.
The remainder of running brake system except that master brake cylinder, it is the final braking deceleration performer of automatic control deceleration system, because the automatic control deceleration system is to insert the master brake cylinder of running brake line with the lower part by the series connection of shuttle valve composite oil cylinder, therefore, no matter whether the running brake system has the ABS anti-locking brake function, the access and the function that all do not influence the automatic control deceleration system realize.
The shuttle valve composite oil cylinder is made up of the identical left and right sides two parts of function, to adapt to the configuration mode of running brake line.Wherein left barrier film oil cylinder 9, left shuttle valve 10 are formed left shuttle valve composite oil cylinder, and right barrier film oil cylinder 11, right shuttle valve 12 are formed right shuttle valve composite oil cylinder.
Fig. 4 is the automatic control vehicle deceleration system brake actuator schematic diagram that utilizes the automobile power steering hydraulic oil flow.Hydraulic pump motor, Hydraulic Pump and petrol storage tank, pressure relay have been cancelled in hydraulic energy-accumulating unit 6 ' among the figure; increase by pass valve 20; the automobile power steering system hydraulic oil check valve 15 of flowing through is pressed into energy storage 14 accumulation of energys; by pass valve 20 is energy storage pressure regulating element and protecting component, makes the oily stream that is higher than setting pressure flow back to power steering hydraulic efficiency pressure system 21.
Modern automobile disposes the hydraulic power steering function mostly, power steering hydraulic pressure oil stream drives hydraulic oil pump (gear type pump or blade-type pump) by automotive engine and produces, hydraulic coupling is about 10Mpa, satisfy the requirement of brake fluid pressure pressure, therefore, dispose the automobile of power steering function, can utilize the power steering hydraulic efficiency pressure system to provide hydraulic oil flow to the hydraulic energy-accumulating unit, save hydraulic pump motor, Hydraulic Pump and petrol storage tank three big parts in the hydraulic energy-accumulating unit, promptly reduced cost, alleviate weight, more improved the reliability of system.
Claims (4)
1. shuttle valve composite oil cylinder, it is characterized by: this shuttle valve composite oil cylinder is composited by shuttle valve and diaphragm of rubber oil cylinder, shuttle valve is packing element with the steel ball, and the low discharge oil duct is reserved at sealing position, shuttle valve lower end, utilizes the pressure reduction principle to control ending of different hydraulic channels or connection; The diaphragm of rubber oil cylinder is isolated the working medium of different hydraulic efficiency pressure systems, and utilizes the oil cylinder volume-variation to transmit hydraulic coupling.
2. automatic control vehicle deceleration system brake actuator, it is characterized by: this mechanism forms by shuttle valve composite oil cylinder, hydraulic energy-accumulating unit and running brake system are local, and wherein the shuttle valve composite oil cylinder is the attaching parts and the working medium isolating device of automatic control vehicle deceleration system and running brake system; The hydraulic energy-accumulating unit is that the braking force of automatic control vehicle deceleration system produces, output device; Described running brake system part is the running brake system of the remainder except that master brake cylinder, and described running brake system part is the final braking deceleration performer of automatic control vehicle deceleration system; This shuttle valve composite oil cylinder is composited by shuttle valve and diaphragm of rubber oil cylinder, and shuttle valve is packing element with the steel ball, and the low discharge oil duct is reserved at sealing position, shuttle valve lower end, utilizes the pressure reduction principle to control ending of different hydraulic channels or connection; The diaphragm of rubber oil cylinder is isolated the working medium of different hydraulic efficiency pressure systems, and utilizes the oil cylinder volume-variation to transmit hydraulic coupling.
3. automatic control vehicle deceleration system brake actuator according to claim 2, it is characterized by: the hydraulic energy-accumulating unit is the hydraulic energy-accumulating unit assembly that is totally independent of automobile, the hydraulic energy-accumulating unit assembly that is independent of automobile by Hydraulic Pump, be used to drive hydraulic pump motor, check valve, hydraulic accumulator, pressure relay, petrol storage tank, the electromagnetic hydraulic pressure directional control valve that Hydraulic Pump rotates and form
Wherein switching direction makes optionally the pressure oil in the energy storage to be outputed to the barrier film oil cylinder of shuttle valve composite oil cylinder by the electromagnetic hydraulic pressure directional control valve or makes the in-oil cylinder pressure oil of barrier film of shuttle valve composite oil cylinder flow back to petrol storage tank by the electromagnetic hydraulic pressure directional control valve electromagnetic hydraulic pressure directional control valve (13) by the computer controlled processing unit control of automatic control vehicle deceleration system.
4. automatic control vehicle deceleration system brake actuator according to claim 2, it is characterized by: the hydraulic energy-accumulating unit is the hydraulic energy-accumulating unit that utilizes the automobile power steering hydraulic oil flow, and it is made up of electromagnetic hydraulic pressure directional control valve, check valve, hydraulic accumulator and by pass valve;
Wherein the hydraulic oil flow of automobile power steering hydraulic efficiency pressure system is pressed into the energy storage accumulation of energy through check valve, and by pass valve is energy storage pressure regulating element and protecting component, is used to make the hydraulic oil flow that is higher than setting pressure to flow back to the automobile power steering hydraulic efficiency pressure system; And,
Wherein switching direction makes optionally the pressure oil in the energy storage to be outputed to the barrier film oil cylinder of shuttle valve composite oil cylinder by the electromagnetic hydraulic pressure directional control valve or makes the in-oil cylinder pressure oil of barrier film of shuttle valve composite oil cylinder flow back to the automobile power steering hydraulic efficiency pressure system by the electromagnetic hydraulic pressure directional control valve electromagnetic hydraulic pressure directional control valve (13) by the computer controlled processing unit control of automatic control vehicle deceleration system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100566797A CN1847066B (en) | 2005-04-15 | 2005-04-15 | Composite shuttle-valve oil cylinder and the brake executing mechanism therewith for automatic control vehicle reducing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2005100566797A CN1847066B (en) | 2005-04-15 | 2005-04-15 | Composite shuttle-valve oil cylinder and the brake executing mechanism therewith for automatic control vehicle reducing system |
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| CN1847066A CN1847066A (en) | 2006-10-18 |
| CN1847066B true CN1847066B (en) | 2010-09-08 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830216A (en) * | 2010-03-18 | 2010-09-15 | 三一重机有限公司 | Control device for hydraulic brake of mining dumper |
| KR101767880B1 (en) * | 2011-04-19 | 2017-08-16 | 현대모비스 주식회사 | Brake device of vehicle |
| KR101854105B1 (en) * | 2011-05-12 | 2018-05-04 | 현대모비스 주식회사 | Brake device of vehicle |
| CN103287414A (en) * | 2013-06-10 | 2013-09-11 | 浙江先安汽车制动系统有限公司 | Careless accelerator stamping error correcting system fast executing emergency braking through steering system oil pump |
| CN104192112A (en) * | 2014-08-08 | 2014-12-10 | 北京理工大学 | Unmanned vehicle brake system for achieving double-loop brake |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1032688A (en) * | 1965-02-25 | 1966-06-15 | Ford Motor Co | Motor vehicle hydraulic brake systems |
| FR2279593A1 (en) * | 1974-07-23 | 1976-02-20 | Knorr Bremse Gmbh | Control valve for train pneumatic brakes - with membrane braced on low wear coated plastics gasket ring |
| CN1215005A (en) * | 1997-10-21 | 1999-04-28 | 张凯文 | Linkage brake system |
| CN1270895A (en) * | 2000-01-28 | 2000-10-25 | 傅建中 | Automatic emergency brake system for high-speed running automobile with burst tyre |
| DE10224804A1 (en) * | 2002-06-05 | 2004-01-08 | Wabco Gmbh & Co. Ohg | Valve esp. brake valve for brake unit of EBS system has membrane with peripheral sealing bead engaging over valve housing for pressure-proof seal of valve housing and appliance housing |
| CN1473730A (en) * | 2003-03-20 | 2004-02-11 | 上海交通大学 | Active device for preventing automobile wear end collision |
| CN2789089Y (en) * | 2005-04-05 | 2006-06-21 | 彭彦钧 | Hydraulic isolated oil cylinder and automatic braking system for tyre breaking of vehicle |
-
2005
- 2005-04-15 CN CN2005100566797A patent/CN1847066B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1032688A (en) * | 1965-02-25 | 1966-06-15 | Ford Motor Co | Motor vehicle hydraulic brake systems |
| FR2279593A1 (en) * | 1974-07-23 | 1976-02-20 | Knorr Bremse Gmbh | Control valve for train pneumatic brakes - with membrane braced on low wear coated plastics gasket ring |
| CN1215005A (en) * | 1997-10-21 | 1999-04-28 | 张凯文 | Linkage brake system |
| CN1270895A (en) * | 2000-01-28 | 2000-10-25 | 傅建中 | Automatic emergency brake system for high-speed running automobile with burst tyre |
| DE10224804A1 (en) * | 2002-06-05 | 2004-01-08 | Wabco Gmbh & Co. Ohg | Valve esp. brake valve for brake unit of EBS system has membrane with peripheral sealing bead engaging over valve housing for pressure-proof seal of valve housing and appliance housing |
| CN1473730A (en) * | 2003-03-20 | 2004-02-11 | 上海交通大学 | Active device for preventing automobile wear end collision |
| CN2789089Y (en) * | 2005-04-05 | 2006-06-21 | 彭彦钧 | Hydraulic isolated oil cylinder and automatic braking system for tyre breaking of vehicle |
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| CN1847066A (en) | 2006-10-18 |
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Effective date of registration: 20071026 Address after: No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant after: Zhejiang Geely Holding Group Co., Ltd. Address before: Xiqing road Diecai district the Guangxi Zhuang Autonomous Region Guilin No. 8 Building 5 2-1-2 Applicant before: Fu Jianzhong |
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