CN201152297Y - Engineering machinery speed-changer electrohydraulic gear shifting control valve - Google Patents
Engineering machinery speed-changer electrohydraulic gear shifting control valve Download PDFInfo
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- CN201152297Y CN201152297Y CNU2007200994864U CN200720099486U CN201152297Y CN 201152297 Y CN201152297 Y CN 201152297Y CN U2007200994864 U CNU2007200994864 U CN U2007200994864U CN 200720099486 U CN200720099486 U CN 200720099486U CN 201152297 Y CN201152297 Y CN 201152297Y
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Abstract
The utility model relates to an electro-hydraulic shift control valve for construction machinery transmissions and is characterized in that five two-position and four-way change valves are arranged in a valve block, the facade of the valve block is provided with an oil inlet P and an oil-returning inlet O, and the oil inlet P and the oil-returning inlet O are connected with the each two-position and four-way change valve; the side face of the valve block is provided with five electro-magnetic valves for controlling the two-position and four-way change valves; the internal column face of the valve hole of each two-position and four-way change valve is provided with a ring-shaped oil inlet P, an oil-returning inlet O, an oil outlet, and a middle oil mouth B; the external column face of the change valve core is provided with three through grooves for controlling the oil outlet; one end of the change valve core is provided with a central hole, an offsetting spring and a guide rod are arranged in the central hole; the side face of a valve plate is provided with six oil mouths connected with the two-position and four-way change valves, the oil inlet and the oil-returning inlet of the valve block are provided with a pressure-adjusting valve and an accumulator. And thus, the valve can make use of the six oil outlets to control the different separating-and-reuniting states of the hydraulic clutches to achieve the shifting process of the transmission so that the labor intensity of the drivers is relieved considerably; otherwise, the electro-hydraulic shift control valve has the advantage that the operation is convenient and simple, and the use efficiency of the oil can be improved.
Description
Technical field
The utility model relates to a kind of HYDRAULIC CONTROL SYSTEM valve that is used for, especially a kind of engineering machinery speed changer electric liquid shift control valve.
Background technique
The a large amount of engineering machinery of producing and using of China and the shift of transmission of loader mostly are manual shift at present, and it mainly is made up of pressure regulator valve, shut off valve, shift valve, valve body etc.Pressure regulator valve comprises spool, pressure spring, energy-storaging spring, accumulation of energy plunger, throttle orifice, one-way valve etc.; Shut off valve comprises cut-out valve rod, spring etc.Each valve is assemblied in the valve body, and the gear changing mode of this control valve is the hand-hydraulic gear shift, and gear is few, and complex structure is handled inconvenience, can not adapt to many gears speed changer.
Summary of the invention
A kind of manipulation is simple, labour-saving engineering machinery speed changer electric liquid shift control valve for the technical problem that exists in the solution known technology provides for the utility model.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of engineering machinery speed changer electric liquid shift control valve, comprise the valve piece, be arranged on five interior two-position four way change valves of valve piece, be arranged on the filler opening and the return opening that are communicated with each two-position four way change valve oil circuit in valve piece front and be installed in valve piece side is controlled each two-position four way change valve commutation respectively by oil circuit five solenoid valves compositions, described filler opening and return opening place at the valve piece is equipped with pressure regulator valve and accumulator thereof, at the valve piece back side valve plate is installed, the valve plate side is shaped on six hydraulic fluid ports that are communicated with the output oil port of each two-position four way change valve respectively.
The utility model can also adopt following technological scheme:
Described two-position four way change valve is made of valve opening and changeover valve core, the valve opening inner cylindrical surface is shaped on filler opening, return opening, output oil port and the meta hydraulic fluid port of annular, the external cylindrical surface correspondence of changeover valve core is shaped on the communicating groove of three control output oil ports, one end of changeover valve core is shaped on center hole, return spring is installed in the center hole, and the outer end of return spring is equipped with guide rod.
Described pressure regulator valve and accumulator thereof are to be equipped with valve opening in vivo, and the adjusting pressuring valve core of band circular groove is installed in the valve opening, and adjusting pressuring valve core one end is equipped with pressure adjusting spring, energy storage piston and energy-storaging spring.
Advantage and the good effect that the utlity model has are:
Because one group of gear by six hydraulic coupling control transmissions is installed in speed changer, control the different clutch states of each hydraulic coupling by six output oil ports of this valve, realize the gear shift of speed changer, alleviated driver's labor intensity greatly; The utility model also has advantage easy and simple to handle, as to improve the fluid utilization efficiency in addition.
Description of drawings
Fig. 1 is a plan view of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the oil circuit figure of valve piece;
Fig. 4 is the oil circuit figure of valve plate;
Fig. 5 hydraulic diagram of the present utility model.
Among the figure: 1, valve piece; 2, valve plate; 3, valve gap; 4, solenoid valve; 5, wire terminal; 6, adjusting pressuring valve core; 7, pressure adjusting spring; 8, energy-storaging spring; 9, energy storage piston; 10, changeover valve core; 11, return spring; 12, guide rod.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, Fig. 2, Fig. 3, be provided with five two-position four way change valves in valve piece 1, be provided with oil inlet P and the return opening O that is communicated with each two-position four way change valve oil circuit in valve piece front, filler opening connects oil pump, and return opening connects fuel tank.Be separately installed with five solenoid valves 4 and the wire terminal 5 thereof of controlling each two-position four way change valve commutation by oil circuit in valve piece side, valve piece side also is equipped with the valve gap 3 of solenoid valve.Described two-position four way change valve is made of valve opening and changeover valve core 10, the valve opening inner cylindrical surface is shaped on oil inlet P, return opening O, output oil port (K2, K1, KR, K4, KV, K3) and the meta hydraulic fluid port B of annular, the external cylindrical surface correspondence of changeover valve core is shaped on the communicating groove of three control output oil ports, one end of changeover valve core is shaped on center hole, return spring 11 is installed in the center hole, and the outer end of return spring is equipped with guide rod 12.During the changeover valve core meta, B, P mouth communicate, and K2, K1, KR, K4, KV, K3 communicate with the O mouth of each selector valve respectively, and the pressure oil of clutch flows back to fuel tank; When solenoid valve was worked, the spool of selector valve moved under the pressure oil effect, and this moment, the P mouth communicated with output oil port, entered the clutch pressure oil-in, clutch combination under the pressure oil effect, gear shift success.At the valve piece back side valve plate 2 is installed.As shown in Figure 4, the valve plate side is shaped on six hydraulic fluid ports that are communicated with the output oil port (K2, K1, KR, K4, KV, K3) of each two-position four way change valve respectively, and each hydraulic fluid port can be respectively communicates with the pressure hydraulic fluid port of each grade clutch of speed changer.Filler opening and return opening place at the valve piece are equipped with pressure regulator valve and accumulator thereof, described pressure regulator valve and accumulator thereof are to be equipped with valve opening in vivo, the adjusting pressuring valve core 6 of band circular groove is installed in the valve opening, and adjusting pressuring valve core one end is equipped with pressure adjusting spring 7, energy storage piston 9 and energy-storaging spring 8.Like this, the gear of six hydraulic coupling control transmissions in the engineering machinery speed changer is controlled the different clutch states of each hydraulic coupling by six output oil ports of the present utility model, realizes the gear shift of speed changer, has alleviated driver's labor intensity greatly; The utility model also has advantage easy and simple to handle, as to improve the fluid utilization efficiency in addition.
The gear shift working principle:
As shown in Figure 5.
The fourth gear of advancing position: solenoid valve MV, M1 connect, KV, the oil-feed of K1 mouth, and forward gear clutch and one grade of clutch combination are in one grade of state; Solenoid valve MV, M2 connect, KV, the oil-feed of K2 mouth, and forward gear clutch and the combination of second gear clutch are in the second gear state; Solenoid valve MV connects, KV, the oil-feed of K3 mouth, and forward gear clutch and the combination of third gear clutch are in the third gear state; Solenoid valve M4 connects, K3, the oil-feed of K4 mouth, and forward gear clutch and the combination of fourth gear clutch are in the fourth gear state.
Three gears fall back: solenoid valve MR, M1 connect, KR, the oil-feed of K1 mouth, and backward gear clutch and one grade of clutch combination are in one grade of state; Solenoid valve MR, M2 connect, KR, the oil-feed of K2 mouth, and backward gear clutch and the combination of second gear clutch are in the second gear state; Solenoid valve MR connects, KR, the oil-feed of K3 mouth, and backward gear clutch and the combination of third gear clutch are in the third gear state.
Claims (3)
1. engineering machinery speed changer electric liquid shift control valve, comprise the valve piece, be arranged on five two-position four way change valves in the valve piece, be arranged on the filler opening and the return opening that are communicated with each two-position four way change valve oil circuit in valve piece front, and be installed in valve piece side and form by five solenoid valves that oil circuit is controlled the commutation of each two-position four way change valve respectively, it is characterized in that: described filler opening and return opening place at the valve piece is equipped with pressure regulator valve and accumulator thereof, at the valve piece back side valve plate is installed, the valve plate side is shaped on six hydraulic fluid ports that are communicated with the output oil port of each two-position four way change valve respectively.
2. engineering machinery speed changer electric liquid shift control valve according to claim 1, it is characterized in that: described two-position four way change valve is made of valve opening and changeover valve core, the valve opening inner cylindrical surface is shaped on filler opening, return opening, output oil port and the meta hydraulic fluid port of annular, the external cylindrical surface correspondence of changeover valve core is shaped on the communicating groove of three control output oil ports, one end of changeover valve core is shaped on center hole, return spring is installed in the center hole, and the outer end of return spring is equipped with guide rod.
3. engineering machinery speed changer electric liquid shift control valve according to claim 1, it is characterized in that: described pressure regulator valve and accumulator thereof are to be equipped with valve opening in vivo, the adjusting pressuring valve core of band circular groove is installed in the valve opening, and adjusting pressuring valve core one end is equipped with pressure adjusting spring, energy storage piston and energy-storaging spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200994864U CN201152297Y (en) | 2007-12-28 | 2007-12-28 | Engineering machinery speed-changer electrohydraulic gear shifting control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200994864U CN201152297Y (en) | 2007-12-28 | 2007-12-28 | Engineering machinery speed-changer electrohydraulic gear shifting control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201152297Y true CN201152297Y (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200994864U Expired - Fee Related CN201152297Y (en) | 2007-12-28 | 2007-12-28 | Engineering machinery speed-changer electrohydraulic gear shifting control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201152297Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214158A (en) * | 2014-08-28 | 2014-12-17 | 中国北车集团大连机车研究所有限公司 | Solenoid control valve assembly for hydraulic transmission gear box |
| CN105090148A (en) * | 2014-05-23 | 2015-11-25 | 斗山英维高株式会社 | Pilot signal block assembly for construction machinery and control valve assembly having the same |
| CN106438540A (en) * | 2016-10-09 | 2017-02-22 | 合肥协力液压科技有限公司 | Electromagnetic speed reduction manual control valve |
| CN106499687A (en) * | 2016-10-09 | 2017-03-15 | 合肥协力液压科技有限公司 | A kind of fluid drive electric hydraulic control valve |
| 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 |
| CN110296212A (en) * | 2019-05-16 | 2019-10-01 | 杭州前进齿轮箱集团股份有限公司 | A kind of electrohydraulic control system of achievable multi gear position pavement construction machinery flexible shifting |
| CN112524111A (en) * | 2019-08-05 | 2021-03-19 | 浙江横浦科技有限公司 | Energy storage type bidirectional pressure regulating valve |
| CN112793417A (en) * | 2021-03-27 | 2021-05-14 | 福建鲲榕科技集团有限公司 | Emergency rescue car load hydraulic power transmission system |
-
2007
- 2007-12-28 CN CNU2007200994864U patent/CN201152297Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090148A (en) * | 2014-05-23 | 2015-11-25 | 斗山英维高株式会社 | Pilot signal block assembly for construction machinery and control valve assembly having the same |
| CN104214158A (en) * | 2014-08-28 | 2014-12-17 | 中国北车集团大连机车研究所有限公司 | Solenoid control valve assembly for hydraulic transmission gear box |
| CN104214158B (en) * | 2014-08-28 | 2017-03-22 | 中国北车集团大连机车研究所有限公司 | Solenoid control valve assembly for hydraulic transmission gear box |
| CN106438540A (en) * | 2016-10-09 | 2017-02-22 | 合肥协力液压科技有限公司 | Electromagnetic speed reduction manual control valve |
| CN106499687A (en) * | 2016-10-09 | 2017-03-15 | 合肥协力液压科技有限公司 | A kind of fluid drive electric hydraulic control valve |
| 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 |
| CN110296212A (en) * | 2019-05-16 | 2019-10-01 | 杭州前进齿轮箱集团股份有限公司 | A kind of electrohydraulic control system of achievable multi gear position pavement construction machinery flexible shifting |
| CN112524111A (en) * | 2019-08-05 | 2021-03-19 | 浙江横浦科技有限公司 | Energy storage type bidirectional pressure regulating valve |
| CN112793417A (en) * | 2021-03-27 | 2021-05-14 | 福建鲲榕科技集团有限公司 | Emergency rescue car load hydraulic power transmission system |
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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 |
Granted publication date: 20081119 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |