CN202125591U - Combined type pilot control shift valve - Google Patents
Combined type pilot control shift valve Download PDFInfo
- Publication number
- CN202125591U CN202125591U CN2011202266938U CN201120226693U CN202125591U CN 202125591 U CN202125591 U CN 202125591U CN 2011202266938 U CN2011202266938 U CN 2011202266938U CN 201120226693 U CN201120226693 U CN 201120226693U CN 202125591 U CN202125591 U CN 202125591U
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- China
- Prior art keywords
- valve
- piece
- control
- valve block
- combined type
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- 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
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- Control Of Transmission Device (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model discloses a combined type pilot control shift valve which comprises a flow control valve, a pilot control pressure control valve, a pilot control electromagnetic valve and a hydraulic directional control valve. The shift valve also comprises a first valve block and a second valve block, the first valve block is communicated with the second valve block through a fuel circuit, and a detachable connection is arranged between the first valve block and the second valve block. The pilot control pressure control valve and the flow control valve are connected with the first valve block. The pilot control electromagnetic valve and the hydraulic directional control valve are connected with the second valve block. The second valve block is provided with a fuel supply port, a fuel return port and a plurality of control ports communicated with clutches of different gears. The utility model has preferable generality, can conveniently change module combinations, easily adjust structural parameters, and can be widely applied to the electro-hydraulic shift control of multispeed power shift gearbox used in construction machinery, load-carrying vehicles etc.
Description
Technical field
The utility model relates to a kind of combined type shift valve that is used for gearbox shifting control.
Background technique
At present; The electro-hydraulic control valve that is applicable to gearbox shifting at home be model specification or product quantity all seldom, existing products is seen from the market, has two large problems: the one, what adopt at the junction plane of the interlayer of split blade type structure and valve and gearbox is the visual complicated oil duct in surface; Spacing between the oil duct is about 5 millimeters; Hot environment lower seal difficulty, the time oil leakage phenomenon is arranged, even can influence the foundation of pressure; The 2nd, often with the valve centralized arrangement of direction, pressure, flow control in a plate valve, in order to adapt to the characteristic of different machines, difficulty relatively just when requiring to change structural parameter.
The model utility content
The technical problem that the utility model will solve provide a kind of have good versatility and easily regulation structure combinations of parameters formula guide control shift valve.
In order to solve the problems of the technologies described above; The utility model adopts following technological scheme: a kind of combined type guide controls shift valve; Comprise flow control valve, pilot pressure control valve, pilot solenoid valve and hydraulicchange-over valve; Also comprise the first valve piece and the second valve piece, removably connect between the said first valve piece and the second valve piece and be connected that said pressure controlled valve is connected with the first valve piece with flow control valve through oil circuit; Said pilot solenoid valve is connected with the second valve piece with hydraulicchange-over valve, and the second valve piece is provided with oil-feed port, leads to the return opening of gearbox and a plurality of control ports of leading to each grade clutch.
The utility model is combined into the combination valve group with pressure controlled valve, flow control valve through the first valve piece, the combination time of clutch and pressure transition characteristic when being used to realize gearbox shifting; Pilot solenoid valve and hydraulicchange-over valve are combined into the selector valve group through the second valve piece, are used to realize the gearshift order of each gear clutch of gearbox.The utility model has the advantages that: one, the combination valve group has versatility; Its structural principle is suitable for the control of the gear shifting characteristic of any dynamic power shift gear box; If gearshift time history or pressure transition characteristic need to change, structural parameter such as replacing spring are easy to, and easy to adjust.Two, the number of the pilot solenoid valve of selector valve group and hydraulicchange-over valve is easy to arrange according to the number of gearbox clutch.
Preferably, said flow control valve, pilot pressure control valve, hydraulicchange-over valve are the plug-in type Connecting format that adapts to the high-temperature operation condition.
Preferably, the quantity of said flow control valve, pilot pressure control valve, pilot solenoid valve and hydraulicchange-over valve is by the quantity and the control logic decision of clutch in the gearbox.
Preferably, the junction plane between the said first valve piece and the second valve piece is provided with " O " shape seal ring.
Preferably, the return opening place of the said second valve piece is provided with " O " shape seal ring.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
Fig. 1 is the plan view that the utility model combined type guide controls shift valve.
Fig. 2 is the plan view that the utility model combined type guide controls shift valve.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of combined type guide of the utility model controls shift valve and comprises flow control valve 11; Pilot pressure control valve 3,4,6,7, pilot solenoid valve 8 and hydraulicchange-over valve 5 also comprise the first valve piece 1 and the second valve piece 2; Removably connect between the first valve piece 1 and the second valve piece 2 and be connected through oil circuit; Pilot pressure control valve 3,4,6,7 is connected with the first valve piece 1 with flow control valve 11, and pilot solenoid valve 8 is connected with the second valve piece 2 with hydraulicchange-over valve 5, and the second valve piece 2 is provided with oil-feed port, leads to the return opening of gearbox and a plurality of control ports 14 of leading to each grade clutch.
The first valve piece 1 and the second valve piece 2 stack and are linked together by four screws 10; Be connected through oil circuit between the first valve piece 1 and the second valve piece 2; Pilot pressure control valve 3,4,6,7 is arranged in the first valve piece 1, and flow control valve 11 is arranged on the inside of the first valve piece 1, and structure is very compact.Pilot solenoid valve 8 is arranged in the second valve piece 2 with hydraulicchange-over valve 5; Pilot solenoid valve 8 is fixed on the second valve piece 2 by screw 9; 5 of hydraulicchange-over valves are through being threaded on the second valve piece 2 on its body; The quantity of pilot solenoid valve 8 and hydraulicchange-over valve 5 is by the quantity and the control logic decision of clutch in the gearbox, and flow control valve 11, pilot pressure control valve 3,4,6,7 and hydraulicchange-over valve 5 all adopt the plug-in type Connecting format that adapts to the high-temperature operation condition.
The junction plane A of the first valve piece 1 and the second valve piece 2 is provided with O-ring seals 12, under screw 10 fastening, can guarantee that junction plane A place leakage of oil can not take place.The second valve piece 2 can be fixed on the gearbox through a plurality of screws 13, and the junction plane B of the second valve piece 2 and gearbox is provided with the return opening in the gear box, and the return opening place also is provided with O-ring seals 15.
Two other side C of the second valve piece 2, D are provided with oil-feed port and a plurality of control ports 14 that can be connected with each grade clutch.
Pilot pressure control valve 3,4,6,7 and flow control valve 11 in the first valve piece 1 are combined into the combination valve group, the combination time of clutch and pressure transition characteristic in the time of can realizing gearbox shifting; Pilot solenoid valve 8 in the second valve piece 2 is combined into the selector valve group with hydraulicchange-over valve 5, can realize the gearshift order of each gear clutch of gearbox.Two valve groups are superimposed together, and are rational in infrastructure, reliable performance.
The combined type guide of the utility model controls the electric liquid gear shift control that shift valve can be widely used in used multi-speed gear boxes such as engineering machinery, lorry, petroleum machinery.
Claims (4)
1. a combined type guide controls shift valve; Comprise flow control valve, pilot pressure control valve, pilot solenoid valve and hydraulicchange-over valve; It is characterized in that: also comprise the first valve piece and the second valve piece; Removably connect between the said first valve piece and the second valve piece and be connected through oil circuit; Said pilot pressure control valve is connected with the first valve piece with flow control valve, and said pilot solenoid valve is connected with the second valve piece with hydraulicchange-over valve, and the second valve piece is provided with oil-feed port, leads to the return opening of gearbox and a plurality of control ports of leading to each grade clutch.
2. combined type guide according to claim 1 controls shift valve, it is characterized in that: said flow control valve, pilot pressure control valve, hydraulicchange-over valve are the plug-in type Connecting format that adapts to the high-temperature operation condition.
3. combined type guide according to claim 1 controls shift valve, it is characterized in that: the junction plane between the said first valve piece and the second valve piece is provided with " O " shape seal ring.
4. combined type guide according to claim 1 controls shift valve, it is characterized in that: the return opening place of the said second valve piece is provided with " O " shape seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202266938U CN202125591U (en) | 2011-06-29 | 2011-06-29 | Combined type pilot control shift valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202266938U CN202125591U (en) | 2011-06-29 | 2011-06-29 | Combined type pilot control shift valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202125591U true CN202125591U (en) | 2012-01-25 |
Family
ID=45488659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202266938U Expired - Fee Related CN202125591U (en) | 2011-06-29 | 2011-06-29 | Combined type pilot control shift valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202125591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829178A (en) * | 2012-09-06 | 2012-12-19 | 三一重工股份有限公司 | Transmission system shifting control method of hydraulic motor |
-
2011
- 2011-06-29 CN CN2011202266938U patent/CN202125591U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829178A (en) * | 2012-09-06 | 2012-12-19 | 三一重工股份有限公司 | Transmission system shifting control method of hydraulic motor |
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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: 20120125 Termination date: 20200629 |