CN204567641U - A kind of self-locking type hydraulic control stop mechanism - Google Patents
A kind of self-locking type hydraulic control stop mechanism Download PDFInfo
- Publication number
- CN204567641U CN204567641U CN201520183379.4U CN201520183379U CN204567641U CN 204567641 U CN204567641 U CN 204567641U CN 201520183379 U CN201520183379 U CN 201520183379U CN 204567641 U CN204567641 U CN 204567641U
- Authority
- CN
- China
- Prior art keywords
- valve
- fluid port
- hydraulic fluid
- self
- communicated
- 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.)
- Active
Links
Landscapes
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model provides a kind of technical scheme of self-locking type hydraulic control stop mechanism, orienting sleeve is provided with between valve body and valve rod described in the program, described orienting sleeve is fixed in valve body, it is free-running fit between described orienting sleeve and valve rod, be provided with between orienting sleeve and valve rod and valve rod, orienting sleeve with the use of self-locking body, one end of this self-locking body is provided with lining, the other end of this self-locking body is by circlip axial location, described valve body is provided with hydraulic fluid port A and hydraulic fluid port B, described hydraulic fluid port A is communicated with oil suction chamber, described hydraulic fluid port B is communicated with self-locking chamber, described hydraulic fluid port A is also connected with hydraulic braking oil circuit with hydraulic fluid port B.Adopt this hydraulic efficiency pressure system in conjunction with bulldozer steering brake hydraulic booster structure, utilize locking phenomenon to add parking safety factor, after normal cycling start, locking phenomenon is removed, and handles add safety measures to car load.Because this hydraulic efficiency pressure system hydraulic power source and servomechanism have good commonality, maintenance cost is low.
Description
Technical field
The utility model relates to a kind of stop mechanism, especially a kind of self-locking type hydraulic control stop mechanism.
Background technology
In engineering machinery field, especially earthmoving vehicles, market competition is growing more intense.Chaufeur affects the purchase intention of client to a certain extent on the requirement of braking in a turn operation comfort.
Bulldozer machinery formula is handled exists the relatively large phenomenon of actuating force, the car locking of conventional belt stop mechanism parking simultaneously function is ratchet-type, automatic car locking function cannot be realized, especially bulldozer is when driving engine is flame-out suddenly in operation process on the slope, if bulldozer can not well self-locking, the fault that comes down may be there is, threaten chaufeur life security.The shortcoming and harm that there is not self-locking in prior art please be described.This is the weak point existing for prior art.
Summary of the invention
Technical problem to be solved in the utility model, be exactly for the deficiency existing for prior art, and a kind of technical scheme of self-locking type hydraulic control stop mechanism is provided, adopt this hydraulic efficiency pressure system in conjunction with bulldozer steering brake hydraulic booster structure, locking phenomenon is utilized to add parking safety factor, after normal cycling start, locking phenomenon is removed, and handles add safety measures to car load.Because this hydraulic efficiency pressure system hydraulic power source and servomechanism have good commonality, maintenance cost is low.
This programme is achieved by the following technical measures: a kind of self-locking type hydraulic control stop mechanism, comprise valve body and be positioned at valve body and be provided with valve rod and brake piston, one end of described valve rod is fixedly connected with brake piston, the other end of valve rod is fixedly connected with spring perch, be positioned on the valve rod outside valve body and be arranged with retarding spring, orienting sleeve is provided with between described valve body and valve rod, described orienting sleeve is fixed in valve body, it is free-running fit between described orienting sleeve and valve rod, be provided with between orienting sleeve and valve rod and valve rod, orienting sleeve with the use of self-locking body, one end of this self-locking body is provided with lining, the other end of this self-locking body is by circlip axial location, described valve body is provided with hydraulic fluid port A and hydraulic fluid port B, described hydraulic fluid port A is communicated with oil suction chamber, described hydraulic fluid port B is communicated with self-locking chamber, described hydraulic fluid port A is also connected with hydraulic braking oil circuit with hydraulic fluid port B.
Further improvement of the utility model also has, described hydraulic braking oil circuit comprises pressure source hydraulic fluid port P, pressure retaining valve, pilot operated directional control valve, braking in a turn valve, foot brake valves, first shuttle valve and the second shuttle valve, described pressure source hydraulic fluid port P is communicated with the A mouth of pilot operated directional control valve through pressure retaining valve, the B mouth of described pilot operated directional control valve is communicated with fuel tank, the O mouth of described pilot operated directional control valve is communicated with the A mouth of the second shuttle valve, the O mouth of described second shuttle valve is communicated with the hydraulic fluid port B of valve body, the B mouth of described second shuttle valve is communicated with the O mouth of the first shuttle valve, the A mouth of described first shuttle valve is communicated with the O mouth of braking in a turn valve, the B mouth of described braking in a turn valve is communicated with fuel tank, the B mouth of described first shuttle valve is communicated with the O mouth of foot brake valves, the B mouth of described foot brake valves is communicated with fuel tank, inflow pipeline is communicated with between described pressure source hydraulic fluid port P and the hydraulic fluid port A of valve body, A mouth and the pilot operated directional control valve of the node M on described inflow pipeline and braking in a turn valve are communicated with, the node N of described inflow pipeline is communicated with the A mouth of foot brake valves.
Further improvement of the utility model also have, described orienting sleeve with between valve body for interference fit is connected.
Further improvement of the utility model also has, and is provided with circlip between described brake piston and valve rod.
Further improvement of the utility model also has, and being free-running fit between described lining and valve rod, is free-running fit between described lining and orienting sleeve.
Further improvement of the utility model also has, and what described self-locking body adopted is voussoir.
Further improvement of the utility model also has, and being free-running fit between described voussoir and valve rod, is free-running fit between described voussoir and orienting sleeve.
The utility model technical characterstic and good effect are:
(1) the utility model achieves the function of parking self-locking by self-locking body, adds the safety factor of parking rear vehicle on the one hand, on the other hand, also improves the competitive power in market;
(2) the utility model brakes bulldozer for belt, utilize former power steering hydraulic power source, can realize, compared with the utility model is braked with original tape formula after increasing the original paper such as hydraulic control handle and hydraulic control brake activation valve, braking in a turn operating effort can be alleviated, improve the operation comfort of chaufeur;
(3) the utility model is on conventional types brake boost basis, changes minority parts and can realize this function, be easy to change, be convenient to maintenance.
As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model detailed description of the invention.
In figure, 1 is pressure retaining valve, and 2 is pilot operated directional control valve, and 3 is braking in a turn valve, 4 is the first shuttle valve, and 5 is the second shuttle valve, and 6 is foot brake valves, and 7 is fuel tank, 8 is circlip, and 9 is spring perch, and 10 is retarding spring, and 11 is valve rod, 12 is orienting sleeve, and 13 is valve body, and 14 is lining, and 15 is voussoir, 16 is circlip, and 17 is circlip, and 18 is brake piston, and 19 is oil suction chamber, 20 is self-locking chamber, and 21 is inflow pipeline, and 22 is pressure source hydraulic fluid port P.
Detailed description of the invention
For the technical characterstic of this programme can be clearly demonstrated, below by a detailed description of the invention, and in conjunction with its accompanying drawing, this programme is set forth.
A kind of self-locking type hydraulic control stop mechanism, comprise valve body 13 and be positioned at valve body 13 and be provided with valve rod 11 and brake piston 18, one end of described valve rod 11 is fixedly connected with brake piston 10, the other end of valve rod 11 is fixedly connected with spring perch 9, be positioned on the valve rod 11 outside valve body 13 and be arranged with retarding spring 10, orienting sleeve 12 is provided with between described valve body 13 and valve rod 11, described orienting sleeve 12 is fixed in valve body 13, be free-running fit between described orienting sleeve 12 and valve rod 11, be provided with between orienting sleeve 12 and valve rod 11 and valve rod 11, orienting sleeve 12 with the use of self-locking body, one end of this self-locking body is provided with lining 14, the other end of this self-locking body is by circlip 16 axial location, described valve body 13 is provided with hydraulic fluid port A and hydraulic fluid port B, described hydraulic fluid port A is communicated with oil suction chamber 19, described hydraulic fluid port B is communicated with self-locking chamber 20, described hydraulic fluid port A is also connected with hydraulic braking oil circuit with hydraulic fluid port B.
Described hydraulic braking oil circuit comprises pressure source hydraulic fluid port P22, pressure retaining valve 1, pilot operated directional control valve 2, braking in a turn valve 3, foot brake valves 6, first shuttle valve 4 and the second shuttle valve 5.Described pressure source hydraulic fluid port P22 is communicated with the A mouth of pilot operated directional control valve 2 through pressure retaining valve 1, the B mouth of described pilot operated directional control valve 2 is communicated with fuel tank 7, the O mouth of described pilot operated directional control valve 2 is communicated with the A mouth of the second shuttle valve 5, the described O mouth of the second shuttle valve 5 is communicated with the hydraulic fluid port A of valve body 13, the B mouth of described second shuttle valve 5 is communicated with the O mouth of the first shuttle valve 4, the described A mouth of the first shuttle valve 4 is communicated with the O mouth of braking in a turn valve 3, the B mouth of described braking in a turn valve 3 is communicated with fuel tank 7, the described B mouth of the first shuttle valve 4 is communicated with the O mouth of foot brake valves 6, the B mouth of described foot brake valves 6 is communicated with fuel tank 7, inflow pipeline 21 is communicated with between described pressure source hydraulic fluid port P22 and the hydraulic fluid port B of valve body 13, A mouth and pilot operated directional control valve 2 oil circuit control of the node M on described inflow pipeline 21 and braking in a turn valve 3 are communicated with, the node N of described inflow pipeline 21 is communicated with the A mouth of foot brake valves 6.
Described orienting sleeve 12 with between valve body 13 for interference fit is connected.Circlip 17 is provided with between described brake piston 18 and valve rod 11.Being free-running fit between described lining 14 and valve rod 11, is free-running fit between described lining 14 and orienting sleeve 12.Being free-running fit between described voussoir 14 and valve rod 11, is free-running fit between described voussoir 14 and orienting sleeve 12.
Principle of work of the present utility model is:
(1) vehicle normally runs: pressure source hydraulic fluid port P22 makes pilot operated directional control valve 2 be switched to left position by the oil sources of node M as the control presssure of pilot operated directional control valve 2, controls self-locking chamber 20 fluid and lets out oil sump tank 7.Self-locking chamber 20 fluid can let out oil sump tank 7 by three kinds of paths:
One: the hydraulic fluid port A of self-locking chamber 20 fluid on valve body 13 enters the hydraulic fluid port O of the second shuttle valve 5, the hydraulic fluid port O of the first shuttle valve 4 is flowed into through the hydraulic fluid port B of the second shuttle valve 5, flow into the hydraulic fluid port O of foot brake valves 6 through the hydraulic fluid port B of the first shuttle valve 4, flow into fuel tank 7 through the hydraulic fluid port B of foot brake valves 6;
Two: the hydraulic fluid port A of self-locking chamber 20 fluid on valve body 13 enters the hydraulic fluid port O of the second shuttle valve 5, the hydraulic fluid port O of the first shuttle valve 4 is flowed into through the hydraulic fluid port B of the second shuttle valve 5, flow into the hydraulic fluid port O of braking in a turn valve 3 through the hydraulic fluid port A of the first shuttle valve 4, flow into fuel tank 7 through the hydraulic fluid port B of braking in a turn valve 3;
Three: the hydraulic fluid port A of self-locking chamber 20 fluid on valve body 13 enters the hydraulic fluid port O of the second shuttle valve 5, flow into the hydraulic fluid port O of pilot operated directional control valve 2 through the hydraulic fluid port A of the second shuttle valve 5, flow into fuel tank 7 through the hydraulic fluid port B of pilot operated directional control valve 2;
Meanwhile, pressure source fluid flows into the hydraulic fluid port B of valve body 13 through inflow pipeline 21, and enters orienting sleeve 12, and lining 14 promotes voussoir 14 and moves right, self-locking releasing.
(2) car brakeing: when foot brake valves 6 action, pressure source fluid P flow to node N through inflow pipeline 21, and flow into foot brake valves 6 through the hydraulic fluid port B of foot brake valves 6, the hydraulic fluid port B of the first shuttle valve 4 is flowed into through the hydraulic fluid port O of foot brake valves 6, flow into the hydraulic fluid port B of the second shuttle valve 5 through the hydraulic fluid port O of the first shuttle valve 4, through the hydraulic fluid port A that the hydraulic fluid port O of the second shuttle valve 5 flows into valve body 13, flow into the self-locking chamber 20 of valve body 13, piston is moved right and realizes braking, and make voussoir 14 realize the self-locking of valve rod 11 to left movement; When 3 action of braking in a turn valve, pressure source fluid P flow to node M through inflow pipeline 21, and enter braking in a turn valve 3 through the hydraulic fluid port A of braking in a turn valve 3, the hydraulic fluid port A of shuttle valve is flowed into through the hydraulic fluid port O of braking in a turn valve 3, the hydraulic fluid port B of the second shuttle valve 5 is flowed into through the hydraulic fluid port O of the first shuttle valve 4, flow into the hydraulic fluid port A of valve body 13 through the hydraulic fluid port O of the second shuttle valve 5, realize braking and self-locking.
(3) after vehicle parking, pressure source fluid does not reoffer fluid, now, the control presssure of pilot operated directional control valve 2 disappears, distress resolves on the left of orienting sleeve 12, pilot operated directional control valve 2 reset oil passage be placed in right side, pressure retaining valve 1 is by discharging energy storage pressure as voussoir 14 operating pressure source, first hydraulic oil enter right position through the hydraulic fluid port A of pilot operated directional control valve 2, the hydraulic fluid port A of the second shuttle valve 5 is flowed into through the hydraulic fluid port O of pilot operated directional control valve 2, flow into the hydraulic fluid port A of valve body 13 through the hydraulic fluid port O of the second shuttle valve 5, achieve the self-locking after parking and braking.
By reference to the accompanying drawings the detailed description of the invention of utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (7)
1. a self-locking type hydraulic control stop mechanism, comprise valve body and be positioned at valve body and be provided with valve rod and brake piston, one end of described valve rod is fixedly connected with brake piston, the other end of valve rod is fixedly connected with spring perch, be positioned on the valve rod outside valve body and be arranged with retarding spring, it is characterized in that: between described valve body and valve rod, be provided with orienting sleeve, described orienting sleeve is fixed in valve body, it is free-running fit between described orienting sleeve and valve rod, be provided with between orienting sleeve and valve rod and valve rod, orienting sleeve with the use of self-locking body, one end of this self-locking body is provided with lining, the other end of this self-locking body is by circlip axial location, described valve body is provided with hydraulic fluid port A and hydraulic fluid port B, described hydraulic fluid port A is communicated with oil suction chamber, described hydraulic fluid port B is communicated with self-locking chamber, described hydraulic fluid port A is also connected with hydraulic braking oil circuit with hydraulic fluid port B.
2. self-locking type hydraulic control stop mechanism according to claim 1, it is characterized in that: described hydraulic braking oil circuit comprises pressure source hydraulic fluid port P, pressure retaining valve, pilot operated directional control valve, braking in a turn valve, foot brake valves, first shuttle valve and the second shuttle valve, described pressure source hydraulic fluid port P is communicated with the A mouth of pilot operated directional control valve through pressure retaining valve, the B mouth of described pilot operated directional control valve is communicated with fuel tank, the O mouth of described pilot operated directional control valve is communicated with the A mouth of the second shuttle valve, the O mouth of described second shuttle valve is communicated with the hydraulic fluid port B of valve body, the B mouth of described second shuttle valve is communicated with the O mouth of the first shuttle valve, the A mouth of described first shuttle valve is communicated with the O mouth of braking in a turn valve, the B mouth of described braking in a turn valve is communicated with fuel tank, the B mouth of described first shuttle valve is communicated with the O mouth of foot brake valves, the B mouth of described foot brake valves is communicated with fuel tank, inflow pipeline is communicated with between described pressure source hydraulic fluid port P and the hydraulic fluid port A of valve body, A mouth and the pilot operated directional control valve of the node M on described inflow pipeline and braking in a turn valve are communicated with, the node N of described inflow pipeline is communicated with the A mouth of foot brake valves.
3. self-locking type hydraulic control stop mechanism according to claim 1 and 2, is characterized in that: described orienting sleeve with between valve body for interference fit is connected.
4. self-locking type hydraulic control stop mechanism according to claim 1 and 2, is characterized in that: be provided with circlip between described brake piston and valve rod.
5. self-locking type hydraulic control stop mechanism according to claim 1 and 2, is characterized in that: being free-running fit between described lining and valve rod, is free-running fit between described lining and orienting sleeve.
6. self-locking type hydraulic control stop mechanism according to claim 1 and 2, is characterized in that: what described self-locking body adopted is voussoir.
7. self-locking type hydraulic control stop mechanism according to claim 6, is characterized in that: being free-running fit between described voussoir and valve rod, is free-running fit between described voussoir and orienting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183379.4U CN204567641U (en) | 2015-03-30 | 2015-03-30 | A kind of self-locking type hydraulic control stop mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183379.4U CN204567641U (en) | 2015-03-30 | 2015-03-30 | A kind of self-locking type hydraulic control stop mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204567641U true CN204567641U (en) | 2015-08-19 |
Family
ID=53860319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520183379.4U Active CN204567641U (en) | 2015-03-30 | 2015-03-30 | A kind of self-locking type hydraulic control stop mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204567641U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681493A (en) * | 2018-12-29 | 2019-04-26 | 湖北航天技术研究院总体设计所 | Leveling control loop and control method based on hydraulic control self-lock |
| CN116605198A (en) * | 2023-04-03 | 2023-08-18 | 江苏久祥汽车电器集团有限公司 | Vehicle braking system |
-
2015
- 2015-03-30 CN CN201520183379.4U patent/CN204567641U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681493A (en) * | 2018-12-29 | 2019-04-26 | 湖北航天技术研究院总体设计所 | Leveling control loop and control method based on hydraulic control self-lock |
| CN116605198A (en) * | 2023-04-03 | 2023-08-18 | 江苏久祥汽车电器集团有限公司 | Vehicle braking system |
| CN116605198B (en) * | 2023-04-03 | 2023-12-12 | 江苏久祥汽车电器集团有限公司 | Vehicle braking system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108082158B (en) | Vehicle gear selection and parking brake combined control system | |
| CN103702874A (en) | Control device for brake system of vehicle, brake system for vehicle and method for operating brake system of vehicle | |
| CN201712591U (en) | Braking system for electric forklift truck | |
| CN108979869B (en) | Vehicle with a steering wheel | |
| CN204567641U (en) | A kind of self-locking type hydraulic control stop mechanism | |
| CN102717788A (en) | Braking device of heavy-duty mining dump truck | |
| CN201553138U (en) | Loading machine walking hydraulic braking system mechanism | |
| CN106627541B (en) | Active hydraulic braking system of automobile | |
| CN202463578U (en) | Hydraumatic-power-assisted tractor clutch controlling mechanism | |
| CN201240373Y (en) | Parking brake hydraulic system for forklift | |
| CN204567751U (en) | The integrated hydraulic system that a kind of Underground Mine truck operation turns to and brakes | |
| CN203832474U (en) | Steering and braking hydraulic system | |
| CN204323314U (en) | Bidirectional driving flame proof rubber tyre vehicle brake protecting system | |
| CN204003685U (en) | A kind of braking in a turn hydraulic system and engineering machinery | |
| CN106678321B (en) | High-power hydraulic torque converter assembly and control method thereof | |
| CN107813809B (en) | Hydraulic system for reducing service braking stroke of mining dump truck and braking method | |
| CN204099575U (en) | The proportional hydraulic control system of fork truck hydraulic transmission gearbox | |
| CN103010196A (en) | Pilot central valve position control type integrated master pump | |
| CN204083197U (en) | Fork truck hydraulic transmission gearbox proportional hydraulic control system | |
| CN202847679U (en) | Carry-scraper hydraulic stopping brake system | |
| CN212073998U (en) | Wet type parking braking system for wheel loader | |
| CN201677744U (en) | Motor vehicle hydraulic pressure speed slow-down device | |
| CN203819222U (en) | Hydraulic control turn braking valve for bulldozer | |
| CN103195840B (en) | Automatic clutch system | |
| CN201089453Y (en) | Brake operating device for big power wheeled tractor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |