CN203559443U - Land leveler parking hydraulic automatic brake system - Google Patents
Land leveler parking hydraulic automatic brake system Download PDFInfo
- Publication number
- CN203559443U CN203559443U CN201320577480.9U CN201320577480U CN203559443U CN 203559443 U CN203559443 U CN 203559443U CN 201320577480 U CN201320577480 U CN 201320577480U CN 203559443 U CN203559443 U CN 203559443U
- Authority
- CN
- China
- Prior art keywords
- valve
- electromagnetic reversing
- way electromagnetic
- oil cylinder
- way
- 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.)
- Expired - Fee Related
Links
Landscapes
- Braking Systems And Boosters (AREA)
Abstract
The utility model provides a land leveler parking hydraulic automatic brake system. The system comprises a two-position four-way electromagnetic reversing valve, a one-way valve, a two-position three-way electromagnetic reversing valve, a pressure sensor, an energy accumulator and a brake hydraulic oil cylinder. The inlet P of the two-position four-way electromagnetic reversing valve is connected with a power source, and the outlet A of the two-position four-way electromagnetic reversing valve is connected with the inlet A of the one-way valve, the T port of the two-position four-way electromagnetic reversing valve is connected back to the hydraulic oil cylinder, and the outlet B of the two-position four-way electromagnetic reversing valve is blocked for no usage. The outlet B of the one-way valve is connected with the energy accumulator and the P port of the two-position three-way electromagnetic reversing valve. The A port of the two-position three-way electromagnetic reversing valve is connected with the brake hydraulic oil cylinder, and the T port of the two-position three-way electromagnetic reversing valve is connected back to the hydraulic oil cylinder. The pressure sensor is connected to a pipeline between a pressure oil source and the one-way valve. The brake hydraulic oil cylinder controls a brake hub in connection with the land leveler. The system has the advantages and beneficial effects that the system can allow the brake hub to be in a tensioning state during a parking period of the land leveler, i.e., the land leveler remains braking in a parking period, so that maneuverability and safety of the land leveler are improved.
Description
Technical field
The utility model belongs to hydraulic brake system technical field, specifically relates to a kind of land leveller parking hydraulic pressure automatic breaking system.
Background technology
Land leveller be the places such as highway, railway, dykes and dams and farmland smooth and ditching, scrape the visual plant of the work such as slope, bulldozer snow removing.
In existing technology, the parking brake function of land leveller be by operating personnel by parking brake hand brake pull-up, by frame for movement transmission, make brake hub tensioning, realize the stopping brake of land leveller.But in practical operation, sometimes because operative employee's error cause parking brake not pull-up or pull-up less than the application position of specifying, and make land leveller when stopping, not brake or brake not exclusively, bury potential safety hazard, when serious, cause a serious accident.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of land leveller parking hydraulic pressure automatic breaking system, can avoid the error of artificial braking, guarantees that being perfectly safe of braking is reliable.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
Land leveller parking hydraulic pressure automatic breaking system, comprise two four-way electromagnetic reversing valves, one way valve, two-bit triplet solenoid operated directional valve, pressure sensor, accumulator and brake fluid pressure oil cylinder, described two four-way electromagnetic reversing valve import P and power source join, outlet A meets check valve inlet A, T mouth takes back hydraulic oil container, and outlet B blocks need not; The outlet B of one way valve and accumulator and two-bit triplet solenoid operated directional valve P mouth join; Two-bit triplet solenoid operated directional valve A mouth is access to brake fluid pressure oil cylinder, and T mouth takes back hydraulic oil container; Pressure sensor is connected on the pipeline between pressure oil-source and one way valve; The brake hub of described brake fluid pressure oil cylinder control connection land leveller.
Described accumulator inlet ductwork is provided with pressure measuring tie-in.
Advantage and the good effect that the utlity model has are:
By one way valve and accumulator, obtain stable power source, by the liquid that rushes of two four-way electromagnetic reversing valves and pressure sensor control accumulator, by stretching out of two-bit triplet solenoid operated directional valve control brake fluid pressure oil cylinder, the tensioning of the automatic retraction control land leveller brake hub by brake fluid pressure oil cylinder, thus realize the parking Braking mode to land leveller;
Native system makes land leveller at parking period, can make brake hub all the time in tensioning state, and land leveller parking period is braked all the time, has improved operability and the safety of land leveller;
And simple in structure, easy to make, cost of manufacture is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure:
1, two four-way electromagnetic reversing valves 2, pressure sensor 3, one way valve
4, pressure measuring tie-in 5, accumulator 6, brake fluid pressure oil cylinder
7, two-bit triplet solenoid operated directional valve
The specific embodiment
A preferred embodiment of the present utility model is as follows:
As shown in Figure 1: a kind of land leveller parking hydraulic pressure automatic breaking system, comprises two four-way electromagnetic reversing valves 1, one way valve 3, two-bit triplet solenoid operated directional valve 7, pressure sensor 2, accumulator 5 and brake fluid pressure oil cylinder 6; Described two four-way electromagnetic reversing valves, 1 import P and power source join, and outlet A meets one way valve 3 import A, and T mouth takes back hydraulic oil container, and outlet B blocks need not; The P mouth of the outlet B of one way valve 3 and accumulator 5 and two-bit triplet solenoid operated directional valve 7 joins, and described accumulator 5 inlet ductwork are provided with pressure measuring tie-in; The A mouth of two-bit triplet solenoid operated directional valve 7 connects brake fluid pressure oil cylinder 6, and T mouth takes back hydraulic oil container; Pressure sensor 2 is connected on the pipeline between pressure oil-source and one way valve 3; Described brake fluid pressure oil cylinder 6 adopts mechanical system to be fixed on land leveller vehicle frame, and the brake hub of control connection land leveller.
The course of work of this example:
A. power source rushes liquid by two four-way electromagnetic reversing valves 1 and one way valve 3 to accumulator 5, when accumulator 5 is interior, rushes hydraulic coupling and reaches setting value during P1, and pressure sensor 2 sends electric signal, electromagnet YV1 dead electricity, two four-way electromagnetic reversing valves 1 commutate, system unloaded, and accumulator 5 completes and rushes liquid;
When b. land leveller stops, the electromagnet YV2 of two-bit triplet solenoid operated directional valve 7 is in power failure state, the large chamber of brake fluid pressure oil cylinder 6 is connected by two-bit triplet solenoid operated directional valve 7 and fuel tank, the piston of brake fluid pressure oil cylinder 6() due to the spring action automatic retraction in loculus, by frame for movement, make the brake hub tensioning of land leveller, realize the parking Braking mode of land leveller;
When c. land leveller is walked, the electromagnet YV2 of two-bit triplet solenoid operated directional valve 7 is in obtaining electricity condition, two-bit triplet solenoid operated directional valve 7 commutates, hydraulic oil liquid enters the large chamber of brake fluid pressure oil cylinder 6 from accumulator 5 through two-bit triplet solenoid operated directional valve 7, brake fluid pressure oil cylinder 6 piston rods are stretched out, by frame for movement, brake hub is unclamped, land leveller is realized and normally being travelled;
D. when accumulator internal pressure is lower than setting value during P2, pressure sensor 2 sends electric signal, and YV1 obtains electric, and two four-way electromagnetic reversing valves 1 commutate, repetitive operation a.
E. land leveller at work, the b that performs an action during parking, the c that performs an action while travelling, the pressure feeding back according to service condition, perform an action a or d, enter circulation.
Malfunction:
When power source lost efficacy or car load during because of some reason halt system fuel feeding; one way valve 3 is closed; the 7 electromagnet YV2 power-off of two-bit triplet solenoid operated directional valve; brake fluid pressure oil cylinder 6 is automatic retraction under contained spring effect; by frame for movement, make the brake hub tensioning of land leveller; realize the parking Braking mode of land leveller, thus protection car load safety.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (2)
1. a land leveller parking hydraulic pressure automatic breaking system, it is characterized in that: comprise two four-way electromagnetic reversing valves, one way valve, two-bit triplet solenoid operated directional valve, pressure sensor, accumulator and brake fluid pressure oil cylinder, described two four-way electromagnetic reversing valve import P and power source join, outlet A meets check valve inlet A, T mouth takes back hydraulic oil container, and outlet B blocks need not; The outlet B of one way valve and accumulator and two-bit triplet solenoid operated directional valve P mouth join; Two-bit triplet solenoid operated directional valve A mouth is access to brake fluid pressure oil cylinder, and T mouth takes back hydraulic oil container; Pressure sensor is connected on the pipeline between pressure oil-source and one way valve; The brake hub of described brake fluid pressure oil cylinder control connection land leveller.
2. land leveller parking hydraulic pressure automatic breaking system according to claim 1, is characterized in that: described accumulator inlet ductwork is provided with pressure measuring tie-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577480.9U CN203559443U (en) | 2013-09-16 | 2013-09-16 | Land leveler parking hydraulic automatic brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577480.9U CN203559443U (en) | 2013-09-16 | 2013-09-16 | Land leveler parking hydraulic automatic brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203559443U true CN203559443U (en) | 2014-04-23 |
Family
ID=50509174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320577480.9U Expired - Fee Related CN203559443U (en) | 2013-09-16 | 2013-09-16 | Land leveler parking hydraulic automatic brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203559443U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397240A (en) * | 2015-10-10 | 2016-03-16 | 济南职业学院 | Manufacturing system for fire prevention cabinet |
| CN106704277A (en) * | 2016-12-31 | 2017-05-24 | 杭州富凌科技有限公司 | Pneumatic target resetting and falling control system |
| CN107021437A (en) * | 2017-05-16 | 2017-08-08 | 安徽合力股份有限公司 | Forklift hydraulic system with brake release hydraulic pressure subsystem |
-
2013
- 2013-09-16 CN CN201320577480.9U patent/CN203559443U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397240A (en) * | 2015-10-10 | 2016-03-16 | 济南职业学院 | Manufacturing system for fire prevention cabinet |
| CN105397240B (en) * | 2015-10-10 | 2017-08-29 | 济南职业学院 | A kind of manufacturing system of fire hydrant cabinet |
| CN106704277A (en) * | 2016-12-31 | 2017-05-24 | 杭州富凌科技有限公司 | Pneumatic target resetting and falling control system |
| CN106704277B (en) * | 2016-12-31 | 2018-08-03 | 杭州富凌科技有限公司 | Pneumatic type back starting target system |
| CN107021437A (en) * | 2017-05-16 | 2017-08-08 | 安徽合力股份有限公司 | Forklift hydraulic system with brake release hydraulic pressure subsystem |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203698256U (en) | Special-purpose vehicle braking system | |
| CN106143456A (en) | The brakes of large-tonnage storage battery forktruck | |
| CN102602385B (en) | Parking braking system and engineering machinery | |
| CN103590374B (en) | A kind of hydraulic pressure support dam | |
| CN203559443U (en) | Land leveler parking hydraulic automatic brake system | |
| CN201841911U (en) | Floating hydraulic mechanism for axle | |
| CN105386478A (en) | Excavator and movable arm potential energy recycling system thereof | |
| CN203272290U (en) | Travel controlled braking type reversing loop | |
| CN108488277B (en) | Hydraulic system of mining braking shuttle car | |
| CN109027063B (en) | Variable-pressure yaw brake hydraulic system of wind generating set and control method thereof | |
| CN204726414U (en) | High-speed switch valve passive type tramway train hydraulic brake system | |
| CN206144865U (en) | Hydraulic pressure anti -running device is with two pressurize hydraulic system | |
| CN203766744U (en) | Travel braking device of integral manned and unmanned vehicle | |
| CN202756700U (en) | Anti-blocking check valve | |
| CN204821597U (en) | Take drawing to one side from coupling submerged motor pump of auto -lock brake equipment | |
| CN104019070A (en) | Pressure-maintaining hydraulic system with multistage braking function | |
| CN107178530A (en) | Garbage compression box power unit | |
| CN202911728U (en) | Safe hydraulic brake system for parking brake | |
| CN110541856B (en) | Unmanned automatic control's fork truck braking hydraulic system | |
| CN203567706U (en) | Hydraulic braking control system | |
| CN204895439U (en) | Underground scraper braking system with starter protect function | |
| CN204956455U (en) | Automatic hydraulic braking system of vehicle | |
| CN209925479U (en) | Pressure maintaining loop structure for normally closed hydraulic brake | |
| CN205989737U (en) | Scraper parking brake hydraulic system | |
| CN203526790U (en) | Projection point welding machine comprising safe emergency stop device |
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: 20140423 Termination date: 20140916 |
|
| EXPY | Termination of patent right or utility model |