CN204506879U - A kind of negative proportional control rides reducing valve - Google Patents
A kind of negative proportional control rides reducing valve Download PDFInfo
- Publication number
- CN204506879U CN204506879U CN201520143343.3U CN201520143343U CN204506879U CN 204506879 U CN204506879 U CN 204506879U CN 201520143343 U CN201520143343 U CN 201520143343U CN 204506879 U CN204506879 U CN 204506879U
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- China
- Prior art keywords
- piston rod
- spool
- valve body
- proportional control
- connected entrance
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- 241000269799 Perca fluviatilis Species 0.000 claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052802 copper Inorganic materials 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 20
- 238000013016 damping Methods 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000003042 antagnostic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
Abstract
A kind of negative proportional control rides reducing valve, comprise valve body, spool, the first retracing spring, piston rod and pedal assembly, pedal assembly is installed on valve body, piston rod is sheathed in valve body, first retracing spring to be installed in spring perch and to be sheathed on piston rod, and spool is installed on spring perch, and spool and valve body ensure the motion of spool by free-running fit, the end thereof contacts that spring perch and piston rod are positioned at body cavity coordinates, and the other end of piston rod is connected with the pedal of pedal assembly; Along the sense of motion of spool, valve body offers the first connected entrance and the second connected entrance that coordinate with spool, when move under influence to the second connected entrance position of spool at piston rod, spring perch, the first connected entrance and the second connected entrance are in connected state.The utility model has the advantages such as simple and compact for structure, with low cost, control is convenient.
Description
Technical field
The utility model is mainly concerned with automotive braking control apparatus field, refers in particular to a kind of negative proportional control being applicable to vehicle braking control and rides reducing valve.
Background technology
Brake system is the important component part of vehicle, usually will use various hydraulic valve assembly to complete the process of control for brake in brake system, guarantees to need pressure negative control depressurized system as being used for.For the brake system of industrial wheeled equipment, to be discharged into 0 be brake process to brake-pressure by the highest, pressure from 0 to the highest be remove brake process, in order to steady brake, must control element be increased.
Proportional pressure-reducing valve is belong to common component in construction machinery hydraulic system, but it belongs to direct proportion control cock; That is, under the effect of external force, the pressure of reducing valve can along with the lengthening of movement travel, delivery port pressure can from 0 in proportion relation progressively rise, in brake system, the reducing valve of this function has no idea to reach control effects.
Utility model content
The technical problems to be solved in the utility model is just: the technical matters existed for prior art, the utility model provide a kind of simple and compact for structure, with low cost, control negative proportional control easily and ride reducing valve.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of negative proportional control rides reducing valve, comprise valve body, spool, the first retracing spring, piston rod and pedal assembly, described pedal assembly is installed on valve body, described piston rod is sheathed in valve body, described first retracing spring to be installed in spring perch and to be sheathed on piston rod, described spool is installed on spring perch, described spool and valve body ensure the motion of spool by free-running fit, the end thereof contacts that described spring perch and piston rod are positioned at body cavity coordinates, and the other end of described piston rod is connected with the pedal of pedal assembly; Along the sense of motion of described spool, described valve body offers the first connected entrance and the second connected entrance that coordinate with spool, when move under influence to the second connected entrance position of described spool at piston rod, spring perch, described first connected entrance and the second connected entrance are in connected state.
As further improvement of the utility model: the top end of described valve body is provided with copper sheathing, described piston rod is sheathed in copper sheathing, and described copper sheathing is spacing to spring perch.
As further improvement of the utility model: the fitting surface of described piston rod and copper sheathing is provided with first seal ring of more than a group.
As further improvement of the utility model: the fitting surface of described copper sheathing and body cavity is provided with second seal ring of more than a group.
As further improvement of the utility model: one end that described piston rod coordinates with pedal is provided with dust protecting cap.
As further improvement of the utility model: described spool is provided with spring chair, between described spring chair and copper sheathing, be provided with the second retracing spring.
As further improvement of the utility model: described first connected entrance place increases a damping unit, for ensureing the top pressure of pumping hole.
As further improvement of the utility model: described spool there is a damping hole, by damping hole with the work stoping pedal assembly to be subject to quick external force.
Compared with prior art, the utility model has the advantage of: negative proportional control of the present utility model rides reducing valve, simple and compact for structure, with low cost, control convenience, under being subject to external force situation at pedal assembly, can progressively promote piston rod down to move, now also promote spool and down move.In this process, when move under influence to the second connected entrance position of spool at piston rod, spring perch, the first connected entrance and the second connected entrance are in connected state, so just greatly can improve the reliability of footbrake operation.
Accompanying drawing explanation
Fig. 1 is hydraulic principle schematic diagram of the present utility model.
Fig. 2 is structural principle schematic diagram of the present utility model.
Marginal data:
1, valve body; 2, spool; 3, the first retracing spring; 4, piston rod; 5, pedal assembly; 6, pedal; 7, spring perch; 8, the first seal ring; 9, copper sheathing; 10, the second seal ring; 11, dust protecting cap; 12, the first connected entrance; 13, the second connected entrance; 14, spring chair; 15, the second retracing spring; 16, damping unit.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the utility model is described in further details.
As depicted in figs. 1 and 2, negative proportional control of the present utility model rides reducing valve, comprise valve body 1, spool 2, first retracing spring 3, piston rod 4 and pedal assembly 5, pedal assembly 5 is installed on valve body 1, piston rod 4 is sheathed in valve body 1, first retracing spring 3 to be installed in spring perch 7 and to be sheathed on piston rod 4, spool 2 is installed on spring perch 7, spool 2 and valve body 1 ensure the motion of spool 2 by free-running fit, the end thereof contacts that spring perch 7 and piston rod 4 are positioned at valve body 1 inner chamber coordinates, and the other end of piston rod 4 is connected with the pedal 6 of pedal assembly 5.Along the sense of motion of spool 2, valve body 1 offers the first connected entrance 12 and the second connected entrance 13 coordinated with spool 2, when move under influence to the second connected entrance 13 position of spool 2 at piston rod 4, spring perch 7, the first connected entrance 12 and the second connected entrance 13 are in connected state.
In the present embodiment, the top end of valve body 1 is provided with copper sheathing 9, and piston rod 4 is sheathed in copper sheathing 9, and copper sheathing 9 is used for carrying out spacing to spring perch 7.
In the present embodiment, piston rod 4 fitting surface with copper sheathing 9 is provided with first seal ring 8 of more than a group, ensures piston rod 4 place no matter static or mode of operation does not have fluid seepage.
In the present embodiment, copper sheathing 9 fitting surface with valve body 1 inner chamber is provided with second seal ring 10 of more than a group, ensures copper sheathing 9 place no matter static or mode of operation does not have fluid seepage.
In the present embodiment, the one end coordinated with pedal 6 at piston rod 4 is provided with dust protecting cap 11, is used for ensureing that piston rod 4 does not have dust and foreign material enter in the state of working long hours, and ensures that piston rod 4 is clean, to improve product service life.
In the present embodiment, spool 2 is provided with spring chair 14, between spring chair 14 and copper sheathing 9, is provided with the second retracing spring 15.
Further, the utility model increases a damping unit 16 at the first connected entrance 12 place, for ensureing the top pressure of pumping hole, and can not affect the work of other operating mechanisms, carrying out restricted passage bear the total flow that proportional control rides reducing valve by damping and pressure.Such as: within being generally 3L/Min, the pressure shown after damping and between reducing valve is operation pressure, and in this pressure process of down being moved by spool 2, can progressively from the highest toward 0 decline, form a negative ratio control mode, thus reach negative proportional control effect of easing stress.
Further, the utility model has a damping hole on spool 2, pedal assembly 5 can be stoped to be subject to the work of quick external force by damping hole, in the situation of external force excessive velocities, the antagonistic force that pedal assembly 5 is subject to spool 2 is very large, and under only having the uniform state of external force, it is design force value normally that pedal assembly 5 is subject to spool 2 antagonistic force, avoid switching impulse, get buffering effect.
Principle of work: at pedal assembly 5 not by external force situation, the first connected entrance 12 (P mouth) of this valve and the second connected entrance 13(T mouth) be obstructed state, the pressure in system is the setting pressure of by pass valve.
Under being subject to external force situation at pedal assembly 5, can progressively promoting piston rod 4 and down move, now also promote spool 2 and down move.In this process, when move under influence to the second connected entrance 13 position of spool 2 at piston rod 4, spring perch 7, the first connected entrance 12 and the second connected entrance 13 are in connected state.
After completing, spool 2 is resetted rapidly for 5 times at the assembly that releases the pedal by the first retracing spring 3, second retracing spring 15.
Below be only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, not departing from the some improvements and modifications under the utility model principle prerequisite, protection domain of the present utility model should be considered as.
Claims (8)
1. a negative proportional control rides reducing valve, it is characterized in that, comprise valve body (1), spool (2), first retracing spring (3), piston rod (4) and pedal assembly (5), described pedal assembly (5) is installed on valve body (1), described piston rod (4) is sheathed in valve body (1), described first retracing spring (3) to be installed in spring perch (7) and to be sheathed on piston rod (4), described spool (2) is installed on spring perch (7), described spool (2) and valve body (1) ensure the motion of spool (2) by free-running fit, the end thereof contacts that described spring perch (7) is positioned at valve body (1) inner chamber with piston rod (4) coordinates, the other end of described piston rod (4) is connected with the pedal (6) of pedal assembly (5), along the sense of motion of described spool (2), described valve body (1) offers the first connected entrance (12) and the second connected entrance (13) that coordinate with spool (2), when described spool (2) is when move under influence to the second connected entrance (13) position of piston rod (4), spring perch (7), described first connected entrance (12) and the second connected entrance (13) are in connected state.
2. negative proportional control according to claim 1 rides reducing valve, it is characterized in that, the top end of described valve body (1) is provided with copper sheathing (9), and described piston rod (4) is sheathed in copper sheathing (9), and described copper sheathing (9) is spacing to spring perch (7).
3. negative proportional control according to claim 1 rides reducing valve, it is characterized in that, described piston rod (4) is provided with first seal ring (8) of more than a group with the fitting surface of copper sheathing (9).
4. negative proportional control according to claim 2 rides reducing valve, it is characterized in that, described copper sheathing (9) is provided with second seal ring (10) of more than a group with the fitting surface of valve body (1) inner chamber.
5. negative proportional control according to claim 1 rides reducing valve, it is characterized in that, one end that described piston rod (4) coordinates with pedal (6) is provided with dust protecting cap (11).
6. negative proportional control according to claim 2 rides reducing valve, it is characterized in that, described spool (2) is provided with spring chair (14), is provided with the second retracing spring (15) between described spring chair (14) and copper sheathing (9).
7. ride reducing valve according to the negative proportional control in claim 1 ~ 6 described in any one, it is characterized in that, described first connected entrance (12) place increases a damping unit (16), for ensureing the top pressure of pumping hole.
8. ride reducing valve according to the negative proportional control in claim 1 ~ 6 described in any one, it is characterized in that, described spool (2) has a damping hole, by damping hole with the work stoping pedal assembly (5) to be subject to quick external force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520143343.3U CN204506879U (en) | 2015-03-13 | 2015-03-13 | A kind of negative proportional control rides reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520143343.3U CN204506879U (en) | 2015-03-13 | 2015-03-13 | A kind of negative proportional control rides reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204506879U true CN204506879U (en) | 2015-07-29 |
Family
ID=53704876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520143343.3U Expired - Fee Related CN204506879U (en) | 2015-03-13 | 2015-03-13 | A kind of negative proportional control rides reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204506879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926837A (en) * | 2017-04-06 | 2017-07-07 | 许昌学院 | A kind of double spool brake valve |
| CN106976450A (en) * | 2017-04-06 | 2017-07-25 | 许昌学院 | A kind of brake valve |
-
2015
- 2015-03-13 CN CN201520143343.3U patent/CN204506879U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926837A (en) * | 2017-04-06 | 2017-07-07 | 许昌学院 | A kind of double spool brake valve |
| CN106976450A (en) * | 2017-04-06 | 2017-07-25 | 许昌学院 | A kind of brake valve |
| CN106926837B (en) * | 2017-04-06 | 2019-03-29 | 许昌学院 | A kind of double spool brake valve |
| CN106976450B (en) * | 2017-04-06 | 2019-03-29 | 许昌学院 | A kind of brake valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 |