CN2617982Y - Two front and one rear electric and hydraulic speed control valve - Google Patents
Two front and one rear electric and hydraulic speed control valve Download PDFInfo
- Publication number
- CN2617982Y CN2617982Y CN 03231226 CN03231226U CN2617982Y CN 2617982 Y CN2617982 Y CN 2617982Y CN 03231226 CN03231226 CN 03231226 CN 03231226 U CN03231226 U CN 03231226U CN 2617982 Y CN2617982 Y CN 2617982Y
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- CN
- China
- Prior art keywords
- valve
- utility
- model
- shift
- control 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a hydraulic transmission field, in particular to an electro-hydraulic control variable speed control valve for the power shifting of engineering machinery. The utility model comprises a valve and a main pressure valve, wherein, an electromagnetic reversing valve and a pressure control valve are positioned on the valve; the valve is connected with an oil transportation plate and a clapboard in turn; the electromagnetic reversing valve is integrated on the valve; a press-adjusting spring of the main pressure valve is a one-way compressed structure, which can prolong the fatigue life of the spring. The utility model has the advantages of the convenient operation of the shift, the comfortable control, the stability of the shift without the impact and the good quality of the shift. The utility model can be directly used in present ZL40 and ZL50 loader gearbox and has good promotion value.
Description
Technical field:
The utility model relates to the hydraulic transmission field, especially the power gear shifting electrichydraulic control speed change control valve of engineering machinery.
Background technique:
In the prior art, the engineer machinery operation operating mode is more abominable, the manipulation situation of travelling complexity, and gearshift is frequent.With the loader is example, and at present domestic shift control system that should machinery usefulness mostly adopts two last back machine liquid shift controls, and it comprises valve body, main pressure valve, distribution valve rod, brake valve rod etc.Each work cycle speed change control valve need be shifted gears 4-5 time, works continuously and per hour need shift gears nearly thousand times.Because the interior not design of its speed change valve is steadily in conjunction with control unit, gearshift moment clutch is in conjunction with rough, and shift impact power is big, makes transmission system produce bigger dynamic load, has quickened the damage of part; Generally at 6N.m, steering force is about 30N with the operating torque of liquid gearshift on opportunity, and frequent gearshift makes the operator very easily produce fatigue, thereby influences the Security of operation.
Summary of the invention:
The purpose of this utility model is to carry out oil circuit by the solenoid directional control valve in this control valve valve body to switch, and utilizes pressure controlled valve to control the steady combination of handling pressure, improves the working life of equipment.
The utility model comprises valve body, main pressure valve, and it is characterized in that has plug-in type electromagnetism selector valve, pressure controlled valve on this valve body, and oil transportation plate and dividing plate also are being linked in sequence on the valve body.
This solenoid directional control valve is integrated to be plugged on the valve body, and the pressure adjusting spring in this main pressure valve is unidirectional compressed structure, can prolong the fatigue life of spring.
Owing to adopted technique scheme, make to the utlity model has following advantage: 1, shift control is light, and handling comfort is good; 2, gearshift does not steadily have impact, and shift quality is good, and service life of equipment is long; 3, can in existing ZL40, zl50 loader gearbox, directly use, have suitable promotional value.
Description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model profile side view;
Fig. 3 is the utility model systematic schematic diagram.
Embodiment:
As shown in Figure 1, the utility model is applicable to the shift control system in the hydraulic construction machine, and it comprises valve body 1, main pressure valve 2 and pressure controlled valve 3, the solenoid directional control valve 4 of three integrated plug-in mountings is as shown in Figure 2 at a side of valve body 1 also be linked in sequence oil transportation plate 5 and dividing plate 6.After engine start, the oil of variable speed pump arrives filler opening through filter cleaner, back bifurcation oil circuit, and one moves right and arrives the torque-converters mouth by opening in the main pressure valve overflow spool, towards torque-converters; Another arrives the cavity volume that links to each other with the clutch fluid cylinder pressure by a throttling pore.Owing in the valve body 1 pressure controlled valve 3 is housed, along with the mesopore on the pressure controlled valve 37 constantly is switched on and closes, system pressure is slowly raise, guaranteed that gearshift moment clutch oil cylinder pressure steadily rises, realize gentle start and flexible gearshift.Pressure adjusting spring 8 one sides in the main pressure valve 2 contact with overflow spool 9 shoulders, and opposite side contacts with the sidewall of body cavity, are unidirectional compressed structure, have changed the bi-directional compression state of original spring, and the setting of system's final pressure is by pressure adjusting spring 8 decisions.Solenoid directional control valve 4 in the utility model is directly controlled the gear clutch operating, and the requirement of main frame two Planetary Power Shift Gearbox after last to the speed change control valve satisfied in the switching of three solenoid directional control valve control oil channel of its integrated plug-in mounting.Solenoid directional control valve is handled integral switch by electric appliance circuits with the electricity on the main frame and is connected, when the operator pulls (or rotation) Joystick in a certain gear, integral switch while corresponding solenoid directional control valve in control valve sends electrical signal makes it to be in the energising position, this moment, hydraulic system made it to engage to certain retaining clutch pressure oil output of correspondence, finished shift control.System works principle of the present utility model is seen accompanying drawing 3, R among the figure
1Be the retaining that falls back, F
1Be the retaining that advances, F
2Be two retainings that advance, P is a filler opening, P
ZWBe the torque-converters mouth.The utility model structure can be complementary with existing ZL40, zl50 loader gearbox.The utility model has saved the gas control element of the skidding assembly that is used for machine hydraulic control system in addition, has alleviated the line arrangement of complete machine, greatly reduces cost of production.
Claims (3)
1, a kind of novel two last back electrichydraulic control speed change control valves, comprise valve body (1), main pressure valve (2), it is characterized in that plug-in type electromagnetism selector valve (4), pressure controlled valve (3) are arranged on this valve body (1), oil transportation plate (5) and dividing plate (6) also are being linked in sequence on the valve body.
2, electrichydraulic control speed change control valve as claimed in claim 1 is characterized in that this solenoid directional control valve (4) is integrated to be inserted on the valve body (1).
3, electrichydraulic control speed change control valve as claimed in claim 1 is characterized in that pressure adjusting spring (8) one sides in this main pressure valve (2) contact with overflow spool (9) shoulder, and opposite side contacts with the sidewall of body cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231226 CN2617982Y (en) | 2003-05-13 | 2003-05-13 | Two front and one rear electric and hydraulic speed control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231226 CN2617982Y (en) | 2003-05-13 | 2003-05-13 | Two front and one rear electric and hydraulic speed control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2617982Y true CN2617982Y (en) | 2004-05-26 |
Family
ID=34248031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03231226 Expired - Lifetime CN2617982Y (en) | 2003-05-13 | 2003-05-13 | Two front and one rear electric and hydraulic speed control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2617982Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390372A (en) * | 2011-11-07 | 2012-03-28 | 中国煤炭科工集团太原研究院 | Hydraulic control power cutting device of down-hole trackless rubber-tyred car |
| CN102767617A (en) * | 2012-07-18 | 2012-11-07 | 四川大学 | Hydraulic gear-shifting pressure control valve |
| CN103322186A (en) * | 2013-06-26 | 2013-09-25 | 临海市优力达机械有限公司 | Low-impact speed change control valve for loader |
| CN103925252A (en) * | 2014-03-10 | 2014-07-16 | 杭州前进齿轮箱集团股份有限公司 | Electrically-controlled inching valve |
| CN106321546A (en) * | 2016-10-09 | 2017-01-11 | 合肥协力液压科技有限公司 | Adjustable-flow gearbox electro-hydraulic control valve |
| CN107255158A (en) * | 2017-06-09 | 2017-10-17 | 北京航空航天大学 | A kind of pure electric automobile two-shift automatic speed variator hydraulic valve plate |
| CN107859737A (en) * | 2017-09-29 | 2018-03-30 | 山东临工工程机械有限公司 | A kind of automatically controlled gear shift system of feedforward control |
-
2003
- 2003-05-13 CN CN 03231226 patent/CN2617982Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390372A (en) * | 2011-11-07 | 2012-03-28 | 中国煤炭科工集团太原研究院 | Hydraulic control power cutting device of down-hole trackless rubber-tyred car |
| CN102767617A (en) * | 2012-07-18 | 2012-11-07 | 四川大学 | Hydraulic gear-shifting pressure control valve |
| CN102767617B (en) * | 2012-07-18 | 2015-06-24 | 四川大学 | Hydraulic gear-shifting pressure control valve |
| CN103322186A (en) * | 2013-06-26 | 2013-09-25 | 临海市优力达机械有限公司 | Low-impact speed change control valve for loader |
| CN103322186B (en) * | 2013-06-26 | 2016-10-05 | 临海市优力达机械有限公司 | Loader is with low impact speed change operating valve |
| CN103925252A (en) * | 2014-03-10 | 2014-07-16 | 杭州前进齿轮箱集团股份有限公司 | Electrically-controlled inching valve |
| CN103925252B (en) * | 2014-03-10 | 2017-01-18 | 杭州前进齿轮箱集团股份有限公司 | Electrically-controlled inching valve |
| CN106321546A (en) * | 2016-10-09 | 2017-01-11 | 合肥协力液压科技有限公司 | Adjustable-flow gearbox electro-hydraulic control valve |
| CN107255158A (en) * | 2017-06-09 | 2017-10-17 | 北京航空航天大学 | A kind of pure electric automobile two-shift automatic speed variator hydraulic valve plate |
| CN107859737A (en) * | 2017-09-29 | 2018-03-30 | 山东临工工程机械有限公司 | A kind of automatically controlled gear shift system of feedforward control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130513 Granted publication date: 20040526 |