CN2694720Y - Rotary valve type hydraulic distributor - Google Patents
Rotary valve type hydraulic distributor Download PDFInfo
- Publication number
- CN2694720Y CN2694720Y CN 200420021371 CN200420021371U CN2694720Y CN 2694720 Y CN2694720 Y CN 2694720Y CN 200420021371 CN200420021371 CN 200420021371 CN 200420021371 U CN200420021371 U CN 200420021371U CN 2694720 Y CN2694720 Y CN 2694720Y
- Authority
- CN
- China
- Prior art keywords
- valve
- rotary spool
- rotary
- valve body
- force
- 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
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- Taps Or Cocks (AREA)
Abstract
The utility model discloses a rotary valve type hydraulic distributor, which comprises a valve body(3), a rotary spool(10), a valve cover(4), an operating handle(2) and a safety valve(1). The rotary spool(10) is arranged in the valve body(3), the rotary spool(10) extends out of the valve cover(4) and is fixed to the operating handle(2), and an oil supply hole(6), an oil return hole(13), a strong lifting oil hole(11) and a strong descending oil hole(8) are provided at the same sectional plane of the valve body(3). An arc-shaped oil return slot(7), a strong lifting oil hole(12) and a strong descending oil hole(9) are provided on the rotary spool(10) with the same sectional plane with the valve body(3). An oil return hole(14) is provided on the other sectional plane of the rotary spool(10). The inlet of the safety valve(1) is connected to the oil supply hole(6), and the outlet of the safety valve(1) is communicated with the oil return hole(13). After adopting the above structures, the rotary valve type hydraulic distributor has the characteristics of simple and reasonable structure, convenient operation, reliable operation, good leak resistance, comprehensive function, strong versatility and convenient transposition of back wheels, etc.
Description
Technical field
The utility model relates to a kind of pressure distributor, particularly a kind ofly is used for that the hydraulic suspension farm machinery rise by force on the tractor, falls by force, the rotary valve pressure distributor of neutral control.
Background technology
At present, the pressure distributor that is used for the lifting of tractor hydraulic suspension farm machinery on the market generally adopts slide-valve structure, can only control strong liter of farm machinery and neutral function, and the decline function relies on farm machinery deadweight realization; Its weak point: when being the depth design of farm machinery arable land, fix, can not artificially control; The 2nd, axial motion during slide-valve structure work, sealing ring damages easily, produces leakage of oil, and operating oil pressure is difficult to guarantee, even causes normally lifting; The 3rd, function does not fall by force in slide-valve structure, and decrease speed is slow.
Summary of the invention
In order to overcome the above-mentioned defective that existing side valve type pressure distributor exists, the utility model provides a kind of simple in structure, easy to operate, reliable operation, leak resistance is good, function is complete rotary valve pressure distributor.The technical scheme that its technical problem that solves the utility model adopts comprises valve body, rotary spool, valve gap, control crank and safety valve, valve gap is fixed on valve body, described rotary spool is arranged in the valve body, rotary spool stretches out valve gap and fixes with control crank, is provided with fuel feed hole, spill port on the same section of valve body, rises oilhole and fall oilhole by force by force; With the rotary spool of the same section of valve body be provided with the arc oil-recovery tank, by force rise oilhole, oilhole falls by force, on another section of rotary spool, be provided with spill port, the import of safety valve links to each other with fuel feed hole, its outlet communicates with spill port.
In order to prevent the rotary spool leakage of oil, on the rotary spool periphery that valve gap cooperates, be provided with sealing ring at least.
For the ease of handling the location, the valve gap that cooperates with the rotary spool end face is provided with retainer spring and steel ball, and rotary spool is provided with the location depression that cooperates with steel ball.
In order to prevent to turn to system out of control, and be fixed with anglec of rotation alignment pin on the valve gap that the rotary spool end face cooperates, rotary spool is provided with the anglec of rotation detent that cooperates with alignment pin.
After adopting said structure because rise by force, fall by force, neutral function directly cooperates realization with oilhole on the valve body by the oilhole on the rotary spool when the different angles, therefore, it is very reliable to work, and simple in structure, easy to operate; Because rotary spool and sealing ring are rotatably assorted, and can only rotate to an angle, therefore, ring wear is little, and leak resistance is good; This distributor remains unchanged with former installation dimension, so highly versatile; The utility model can also be convenient to the trailing wheel transposing by falling function by force with trailing wheel jack-up; Characteristics such as have simple and reasonable, easy to operate, reliable operation, leak resistance is good, function is complete, highly versatile, trailing wheel transposing are convenient.
Description of drawings
Fig. 1 is the utility model front view.
Fig. 2 is the utility model vertical view.
Fig. 3 is the A-A cutaway view of Fig. 1 when rising the operating position by force.
Fig. 4 is the A-A cutaway view of Fig. 1 when neutral operating position.
Fig. 5 is the A-A cutaway view of Fig. 1 when falling the operating position by force.
Fig. 6 is the B-B cutaway view of Fig. 2.
Embodiment
Fig. 1, Fig. 2, Fig. 3 and shown in Figure 6, be the specific embodiments of the utility model rotary valve pressure distributor when rising the operating position by force, it comprises valve body 3, rotary spool 10, valve gap 4, control crank 2 and safety valve 1, valve gap 4 is fixed on valve body 3, rotary spool 10 is arranged in the valve body 3, rotary spool 10 stretches out valve gap 4 and fixing with control crank 2, is provided with fuel feed hole 6, spill port 13 on the same section of valve body 3, rises oilhole 11 and fall oilhole 8 by force by force; With the rotary spool 10 of valve body 3 same sections be provided with arc oil-recovery tank 7, by force rise oilhole 12, oilhole 9 falls by force, on another section of rotary spool 10, be provided with spill port 14, the import of safety valve 1 links to each other with fuel feed hole 6, its outlet communicates with spill port 13.On rotary spool 10 peripheries that valve gap 4 cooperates, be provided with sealing ring 17 at least.The valve gap 4 that cooperates with rotary spool 10 end faces is provided with retainer spring 16 and steel ball 15, and rotary spool 10 is provided with the location depression that cooperates with steel ball 15.Be fixed with anglec of rotation alignment pin 18 on the valve gap 4 that rotary spool 10 end faces cooperate, rotary spool 10 is provided with the anglec of rotation detent that cooperates with alignment pin 18.The processing technology hole of valve body 3 is by stifled 5 shutoff of oil.
Fig. 3 is the structural representation when rising the operating position by force, at this moment, arc oil-recovery tank 7 on fuel feed hole 6 on the valve body 3 and the rotary spool 10, rise oilhole 12 by force and communicate, strong on the rotary spool 10 rise oilhole 12 again with valve body 3 on the strong oilhole 11 that rises, the oilhole 8 that falls by force on the valve body 3 is connected with spill port 13 on the valve body 3 by the spill port on the rotary spool 10 14.When hydraulic pump works, hydraulic oil by fuel feed hole 6, arc oil-recovery tank 7, by force rise oilhole 12, rise the operating cylinder that oilhole 11 is transported to hydraulic oil farm machinery by force, the promotion farm machinery rise, and the operating cylinder oil return of farm machinery is got back to oil storage cylinder by falling oilhole 8, spill port 14 and spill port 13 by force; After rising put in place, the back pressure of fuel feed hole 6 raise, and hydraulic oil is got back to spill port 13 by safety valve 1 pressure release, and hydraulic oil is got back to oil storage cylinder again, thereby realized the strong purpose that rises.
Fig. 4 is the structural representation when neutral operating position, and at this moment, the fuel feed hole 6 on the valve body 3 is connected with spill port 13 on the valve body 3 by the arc oil-recovery tank 7 on the rotary spool 10; When hydraulic pump works, hydraulic oil is got back to oil storage cylinder by fuel feed hole 6, arc oil-recovery tank 7, spill port 13, this moment link to each other with the operating cylinder of farm machinery strong rise oilhole 12 and fall oilhole 8 by force be in sealed condition, farm machinery keep original position, so farm machinery can be suspended on working range any position together.
Fig. 5 is the structural representation when falling the operating position by force, at this moment, fuel feed hole 6 on the valve body 3 communicates with the oilhole 8 that falls by force on the valve body 3 by the oilhole 9 that falls by force on the rotary spool 10, and strong on the valve body 3 rises oilhole 11 and be connected with spill port 13 on the valve body 3 by the arc oil-recovery tank 7 on the rotary spool 10; When hydraulic pump works, hydraulic oil is by fuel feed hole 6, fall oilhole 9 and fall the operating cylinder that oilhole 8 is transported to hydraulic oil farm machinery by force by force, the promotion farm machinery descend, the operating cylinder oil return of farm machinery is got back to oil storage cylinder by strong oilhole 11, arc oil-recovery tank 7 and the spill port 13 of rising, after decline put in place, the back pressure of fuel feed hole 6 raise, and hydraulic oil is got back to spill port 13 by safety valve 1 pressure release, hydraulic oil is got back to oil storage cylinder again, thereby realizes the purpose of decline.
Claims (4)
1, a kind of rotary valve pressure distributor, comprise valve body (3), rotary spool (10), valve gap (4), control crank (2) and safety valve (1), valve gap (4) is fixed on valve body (3), it is characterized in that: described rotary spool (10) is arranged in the valve body (3), rotary spool (10) stretches out valve gap (4) and fixing with control crank (2), is provided with fuel feed hole (6), spill port (13) on the same section of valve body (3), rises oilhole (11) and fall oilhole (8) by force by force; With the rotary spool (10) of the same section of valve body (3) be provided with arc oil-recovery tank (7), by force rise oilhole (12), oilhole (9) falls by force, on another section of rotary spool (10), be provided with spill port (14), the import of safety valve (1) links to each other with fuel feed hole (6), and its outlet communicates with spill port (13).
2, rotary valve pressure distributor according to claim 1 is characterized in that: be provided with sealing ring (17) at least on rotary spool (10) periphery that valve gap (4) cooperates.
3, rotary valve pressure distributor according to claim 1 and 2, it is characterized in that: the valve gap (4) that cooperates with rotary spool (10) end face is provided with retainer spring (16) and steel ball (15), and rotary spool (10) is provided with the location depression that cooperates with steel ball (15).
4, rotary valve pressure distributor according to claim 3, it is characterized in that: be fixed with anglec of rotation alignment pin (18) on the valve gap (4) that rotary spool (10) end face cooperates, rotary spool (10) is provided with the anglec of rotation detent that cooperates with alignment pin (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021371 CN2694720Y (en) | 2004-03-30 | 2004-03-30 | Rotary valve type hydraulic distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021371 CN2694720Y (en) | 2004-03-30 | 2004-03-30 | Rotary valve type hydraulic distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2694720Y true CN2694720Y (en) | 2005-04-27 |
Family
ID=34769938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420021371 Expired - Fee Related CN2694720Y (en) | 2004-03-30 | 2004-03-30 | Rotary valve type hydraulic distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2694720Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103109611A (en) * | 2011-11-17 | 2013-05-22 | 常州联发凯迪机械有限公司 | Distributor control mechanism for tractor |
-
2004
- 2004-03-30 CN CN 200420021371 patent/CN2694720Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103109611A (en) * | 2011-11-17 | 2013-05-22 | 常州联发凯迪机械有限公司 | Distributor control mechanism for tractor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050427 Termination date: 20100330 |