CN109703543A - Braking valve for vehicle - Google Patents
Braking valve for vehicle Download PDFInfo
- Publication number
- CN109703543A CN109703543A CN201811645027.0A CN201811645027A CN109703543A CN 109703543 A CN109703543 A CN 109703543A CN 201811645027 A CN201811645027 A CN 201811645027A CN 109703543 A CN109703543 A CN 109703543A
- Authority
- CN
- China
- Prior art keywords
- valve body
- vehicle
- piston
- braking
- valve
- 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.)
- Pending
Links
Abstract
The present invention relates to engineering truck parking brakings, belong to engineering truck control valve field.It include valve body, there are push rod, piston, spring and steel ball locking positioning mechanism etc. in valve body, vehicle requires lesser operational torque in normal parking braking and releasing parking braking, control crank should have automatically lock positioning function, and occur in vehicle abnormal, when system oil pressure reduces or is flame-out, braking valve for vehicle being capable of automatic parking brake guarantee driving safety.The present invention has the characteristics that compact-sized, reliable operation, manipulation be convenient, automatic emergency parking braking, improves driver's operating experience, when there are emergency situations can automatic emergency parking braking, it is significantly more efficient to have ensured traffic safety.
Description
Technical field
The invention belongs to engineering truck control valve fields, specially braking valve for vehicle.
Background technique
The normal work of braking valve for vehicle, for parking important in inhibiting, it being capable of gradual braking offer for vehicle
Technical support.The development of this technology suffers from extremely important meaning for automobile manufacture, traffic safety.Parking
Brake valve is used to manipulate the emergency braking and parking braking of the engineering truck with spring braking, and is used to only in parking braking
The common components that lower inspection vehicle stops slope ability are acted on, it is directly related to traffic safety.With the continuous popularization of engineering truck
Using also proposed higher demand in terms of the reliability of parking braking, convenience and automation.Vehicle is in normal parking system
Lesser operational torque is required when dynamic and releasing parking braking, control crank there should be automatically lock positioning function, and in vehicle
Occur abnormal, when system oil pressure reduces or is flame-out, braking valve for vehicle being capable of automatic parking brake guarantee driving safety.
Summary of the invention
It is an object of the invention to: to solve the above-mentioned problems, provide braking valve for vehicle.
The technical solution adopted by the invention is as follows:
One piston is set in the lower part of valve core of the spool valve, passes through intermediate oil duct connection oil return opening, piston land position on the left of piston
It is connected to pressure oil port, a cylindrical compression spring is installed on the left of piston, after vehicle igniting, as system oil pressure increases, oil
Being pressed in piston land portion is to push piston to move downward compressed spring because difference in areas generates thrust to the left, only need at this time smaller
Steering force can control crank be moved to the left valve core of the spool valve, cut-in pressure hydraulic fluid port and actuator port, pressure oil passes through at this time
Braking valve for vehicle enters spring-loaded brake and releases spring braking.The ball lock positioning device being arranged on the left of valve core of the spool valve can be with
Guarantee that spool is effectively fixed in operating position.When normal driving terminates to need parking braking, can lead to after vehicle comes to a complete stop
It crosses operation handle to move right spool, pressure oil port and actuator port are cut off at this time, and actuator port and oil return opening are connected, spring system
For pressure oil in dynamic device by oil return opening oil return box, spring-loaded brake, which provides brake force, makes vehicle normal brake application, after vehicle stall
Piston moves right under spring thrust and resets to original operating state.When exception occurs in system, system oil pressure is reduced or is put out
When fiery, the cylindrical compression spring on the left of piston pushes piston to move right, and overcomes spool frictional force and ball lock positioning device
Resistance so that valve core of the spool valve is automatically reset cut-out pressure hydraulic fluid port and actuator port, actuator port is connected with oil return opening at this time, spring
For pressure oil in brake by oil return opening oil return box, spring-loaded brake, which provides brake force, makes emergency brake of vehicle
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
The braking valve for vehicle has the characteristics that compact-sized, reliable operation, manipulation convenience, automatic emergency parking braking, improves
Driver's operating experience, when there are emergency situations can automatic emergency parking braking, it is significantly more efficient to have ensured traffic safety.
Detailed description of the invention
Fig. 1 is structure schematic diagram of the invention；
Fig. 2 is structure schematic diagram in the present invention；
Fig. 3 is hydraulic schematic diagram in the present invention.
Marked in the figure: 1, valve body；2, spool；3, piston；4, the first spring；5, the first O-ring；6, the second O-ring；7,
One retaining ring；8, the second retaining ring；9, second spring；10, rubber sheath；11, oil sealing；12, third O-ring；13, screw plug；14, steel
Ball；15, gasket；16, plastics plug screw；17, piston bush；18, third retaining ring；19, hole retaining ring.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention；Term " first ", " second ", " third "
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance；In addition, unless otherwise specific regulation and limit
Fixed, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Referring to Fig.1-3, braking valve for vehicle, including valve body 1, are embedded with spool 2 at the inside center of valve body 1, and the one of valve body 1
End is embedded with piston bush 17, and passes through 4 elastic connection of the first spring, the vertical end two sides of valve body 1 between piston bush 17 and spool 2
It symmetrically is embedded with screw plug 13, the vertical end two sides of valve body 1 are provided with steel ball 14, and pass through second between steel ball 14 and screw plug 13
9 elastic connection of spring, the two sides of valve body 1 are embedded with plastics plug screw 16, and one end of spool 2 is connected with piston 3, spool 2
On be socketed with oil sealing 11, the second O-ring 6 is socketed on the appearance wall of piston 3.
Further, is threadedly coupled between valve body 1 and piston bush 17 by third O-ring 12, piston 3 and piston bush 17 it
Between be flexibly connected respectively by the first retaining ring 7 and the first O-ring 5.
Further, it is flexibly connected between piston 3 and valve body 1 by the second retaining ring 8 and the second O-ring 6.
Further, there are two plastics plug screw 16 is arranged altogether, and two plastics plug screws 16 are located at the top two of valve body 1
Side.
Further, one end of valve body 1 is socketed with rubber sheath 10.
Further, oil sealing 11 is fixedly connected by third retaining ring 18 and hole retaining ring 19 with valve body 1.
Further, it is fixedly connected between plastics plug screw 16 and valve body 1 by gasket 15.
Working principle: the present invention is mainly made of component valve body 1, spool 2, piston 3, spring 4, piston bush 17 etc., spring
4 and piston 3 be fixed on valve body 1 by piston bush 17, third O-ring 12 is that valve body 1 and piston bush 17 provide sealing；First O
Shape circle 5, retaining ring 7 and the second O-ring 6, retaining ring 8 are respectively that piston two sides provide sealing；Steel ball 14 and spring 9 are solid by screw plug 13
It is scheduled on valve body, spring 9 is provided on the spool 2 that thrust pushes steel ball 14 to compress, and provides reliable locking positioning function；Rubber shield
Set 10 and oil sealing 11 are that spool 2 provides sealing and dustproof effect, and spool 2 and valve body 1 use precision-fit, and spool 2 can be in valve
Sliding, the connection and cutting of 1 hydraulic fluid port of valve body may be implemented by the sliding of spool 2 in body 1.Gasket 15 and plastics plug screw 16 are used
Temporary dust and the effect for preventing foreign matter from entering valve body 1 before braking valve for vehicle entrucking.When original operating state, pressure oil port without
Pressure, piston 3 compresses spool 2 under the thrust of left side spring 4 at this time, and actuator port is connected to oil return opening, spring-loaded brake at this time
In on-position.When a vehicle is started, as system oil pressure increases, piston 3 oil pressure effect under compressed spring 4, at this time when
When pushing spool 2 to move right by control crank, cut-out pressure hydraulic fluid port and actuator port are connected to actuator port and oil return opening,
For pressure oil in spring-loaded brake by braking valve for vehicle oil return box, spring-loaded brake work provides brake force.It is manipulated when passing through
Handle can push spool 2 to be moved to the left, and be connected to pressure oil port and actuator port, cut off actuator port and oil return opening, pressure oil
Enter spring-loaded brake by braking valve for vehicle, releases parking braking.Vehicle launch, in driving conditions, when system occur it is abnormal,
When system oil pressure reduces or is flame-out, the cylindrical compression spring 4 on the left of piston pushes piston to move right, and spool 2 is overcome to rub
The resistance of power and ball lock positioning device makes spool 2 automatically reset cut-out pressure hydraulic fluid port and actuator port, at this time actuator port
It is connected with oil return opening, for the pressure oil in spring-loaded brake by oil return opening oil return box, spring-loaded brake, which provides brake force, makes vehicle
Emergency braking.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. braking valve for vehicle, including valve body (1), it is characterised in that: spool (2) are embedded at the inside center of the valve body (1),
One end of the valve body (1) is embedded with piston bush (17), and passes through the first spring (4) bullet between piston bush (17) and piston (3)
Property connection, the vertical end two sides of the valve body (1) are symmetrically embedded with screw plug (13), and the vertical end two sides of the valve body (1) are all provided with
It is equipped with steel ball (14), and passes through second spring (9) elastic connection between steel ball (14) and screw plug (13), the two of the valve body (1)
Side is embedded with plastics plug screw (16), and one end of the spool (2) is connected with piston (3), the appearance wall of the piston (3)
On be socketed with the second O-ring (6), be socketed with oil sealing (11) on the spool (2).
2. braking valve for vehicle as described in claim 1, it is characterised in that: pass through between the valve body (1) and piston bush (17)
Third O-ring (12) is threadedly coupled, and passes through the first retaining ring (7) and the first O shape between the piston (3) and piston bush (17) respectively
(5) are enclosed to be flexibly connected,.
3. braking valve for vehicle as described in claim 1, it is characterised in that: pass through second between the piston (3) and valve body (1)
Retaining ring (8) and the second O-ring (6) are flexibly connected.
4. braking valve for vehicle as described in claim 1, it is characterised in that: there are two the plastics plug screw (16) is arranged altogether, and
Two plastics plug screws (16) are located at the top two sides of valve body (1).
5. braking valve for vehicle as described in claim 1, it is characterised in that: one end of the valve body (1) is socketed with rubber sheath
(10).
6. braking valve for vehicle as described in claim 1, it is characterised in that: the oil sealing (11) passes through third retaining ring (18) and hole
It is fixedly connected with retaining ring (19) with valve body (1).
7. braking valve for vehicle as described in claim 1, it is characterised in that: lead between the plastics plug screw (16) and valve body (1)
Gasket (15) is crossed to be fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645027.0A CN109703543A (en) | 2018-12-29 | 2018-12-29 | Braking valve for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645027.0A CN109703543A (en) | 2018-12-29 | 2018-12-29 | Braking valve for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109703543A true CN109703543A (en) | 2019-05-03 |
Family
ID=66259728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811645027.0A Pending CN109703543A (en) | 2018-12-29 | 2018-12-29 | Braking valve for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109703543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277907A (en) * | 2020-11-02 | 2021-01-29 | 安徽江淮汽车集团股份有限公司 | Novel driver's cabin can crouch and cut off gas and stop control device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657046A (en) * | 1985-03-20 | 1987-04-14 | Robert Bosch Gmbh | Brake valve |
| CN202901120U (en) * | 2012-08-31 | 2013-04-24 | 安徽奇祥汽车零部件有限公司 | Double-oil-taking mechanism of brake master cylinder |
| CN203063928U (en) * | 2012-12-10 | 2013-07-17 | 河南航天液压气动技术有限公司 | Hydraulic parking brake valve |
| CN205327050U (en) * | 2016-01-25 | 2016-06-22 | 山东华伟液压科技有限公司 | Full hydraulic brake valve |
| CN205916129U (en) * | 2016-08-01 | 2017-02-01 | 贵阳玛莱特液压电磁科技有限公司 | Wheeled machineshop car hydraulic brake valve |
| CN207374363U (en) * | 2017-11-02 | 2018-05-18 | 宁波国创机车装备有限公司 | A kind of retaining mechanism and the brake valve with the structure |
-
2018
- 2018-12-29 CN CN201811645027.0A patent/CN109703543A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657046A (en) * | 1985-03-20 | 1987-04-14 | Robert Bosch Gmbh | Brake valve |
| CN202901120U (en) * | 2012-08-31 | 2013-04-24 | 安徽奇祥汽车零部件有限公司 | Double-oil-taking mechanism of brake master cylinder |
| CN203063928U (en) * | 2012-12-10 | 2013-07-17 | 河南航天液压气动技术有限公司 | Hydraulic parking brake valve |
| CN205327050U (en) * | 2016-01-25 | 2016-06-22 | 山东华伟液压科技有限公司 | Full hydraulic brake valve |
| CN205916129U (en) * | 2016-08-01 | 2017-02-01 | 贵阳玛莱特液压电磁科技有限公司 | Wheeled machineshop car hydraulic brake valve |
| CN207374363U (en) * | 2017-11-02 | 2018-05-18 | 宁波国创机车装备有限公司 | A kind of retaining mechanism and the brake valve with the structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277907A (en) * | 2020-11-02 | 2021-01-29 | 安徽江淮汽车集团股份有限公司 | Novel driver's cabin can crouch and cut off gas and stop control device |
| CN112277907B (en) * | 2020-11-02 | 2021-07-20 | 安徽江淮汽车集团股份有限公司 | Air-break brake operating device for driver's cab |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2414206B1 (en) | Brake actuator | |
| KR101804337B1 (en) | Actuating device, in particular for a vehicle brake system | |
| KR101950616B1 (en) | Hydraulic safety system, brake system, and operating method | |
| US4024712A (en) | Fluid pressure control device with a fluid failure alarm for a vehicle brake system | |
| EP2920036A2 (en) | Master brake cylinder arrangement with actuation detection for a motor vehicle brake system | |
| JP5648175B2 (en) | Trailer control valve for compressed air braking system | |
| RU2686377C1 (en) | Pressure limitation valve | |
| CN109703543A (en) | Braking valve for vehicle | |
| US10730497B2 (en) | Main brake cylinder arrangement having a position encoder element and a seal arrangement | |
| US4649804A (en) | Mechanical release arrangement for a fluid-pressure-operated braking cylinder | |
| EP2404799B1 (en) | Adhesive attachment of the disc brake push rod plate to the diaphragm | |
| EP0845072A1 (en) | Spring brake actuator release tool | |
| EP2823194B1 (en) | Spring brake actuator comprising a dual threaded release bolt | |
| KR20060133580A (en) | Hydraulic brake equipped with a locking device for a vehicle and related operating method | |
| CN105408185A (en) | Slack adjuster contaminant mitigation device | |
| US5623863A (en) | Dual-thread release bolt for spring brake actuator | |
| US6016656A (en) | Hydraulic control device | |
| CN112105848B (en) | Actuator and control and lubricant supply system for a motor vehicle | |
| GB1572812A (en) | Brake actuators | |
| EP0956226B1 (en) | Supply dump valve for pneumatically-operated vehicle braking systems | |
| US4702529A (en) | Vehicle brake pressure proportioning valve | |
| EP0214765B1 (en) | Improvements relating to brake actuation systems for vehicles | |
| US20120024642A1 (en) | Brake Actuator & Control Valve Assembly | |
| CN103542016B (en) | A kind of normally open clutch actuator and control system and controlling method | |
| EP0257145B1 (en) | Manually operable control valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190503 |