CN205136191U - High horse power tractor lifting mechanism valves - Google Patents
High horse power tractor lifting mechanism valves Download PDFInfo
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- CN205136191U CN205136191U CN201520931441.3U CN201520931441U CN205136191U CN 205136191 U CN205136191 U CN 205136191U CN 201520931441 U CN201520931441 U CN 201520931441U CN 205136191 U CN205136191 U CN 205136191U
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- control valve
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- 230000007423 decrease Effects 0.000 claims abstract description 34
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 99
- 239000012530 fluid Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides a high horse power tractor lifting mechanism valves, promote control valve, proportion decline control valve, check valve, relief valve, pressure compensator, oil -out A, oil inlet P and oil return opening T including valve body and the proportion of setting on the valve body, relief valve and proportion promotion control valve set gradually the front at the valve body, check valve and proportion decline control valve set gradually the left surface at the valve body, the inside oil duct that is equipped with each valve member oil circuit of intercommunication of valve body, pressure compensator sets up at the valve body back. Oil inlet P, oil -out A all are provided with pressure sensor, oil -out A is connected with the hydro -cylinder, and the hydro -cylinder position is equipped with displacement sensor, and compact structure has realized automated control, has improved work efficiency, has reduced manufacturing cost.
Description
Technical field
The utility model relates to field of agricultural machinery, particularly relates to a kind of big-powered tractor lifter valve group.
Background technique
In life, tractor be carry out ploughing, harrow, the major mechanical of the farmland operation such as plough, generally by motor, transmission, walk, turn to, the system such as hydraulic suspension, Power output, electrical instrumentation, riding manipulation and traction or device form.The tractor of domestic production manufacture mostly belongs to mechanical manipulation and lifter can be promoted or decline, and this manipulation precision is low, complex structure is also unfavorable for maintenance.Along with the development of society, the performance requirement of tractor to suspension system is more and more higher, as publication number: CN204616309 discloses a kind of tractor lifting mechanism, comprise lifter casing, hydraulic jack, lift arm, one end of described lifter casing is fixedly connected on the chassis of tractor, one end of described lift arm is movably connected on the other end of lifter casing, the vertical below being fixedly connected on lift arm of described hydraulic jack, piston rod is connected with in described hydraulic jack, the free end of described piston rod is flexibly connected with the other end of lift arm, described lifter casing is connected with fuel supply line, the other end of described fuel supply line is connected with gear pump, hydraulic oil to be delivered to by oil inlet pipe and to suppress distributor by described gear pump, described distributor of suppressing is connected with hydraulic jack with decline oil pipe respectively by rising oil pipe, the limit stoper for limiting expanded reach is provided with in the joint of described lift arm and lifter casing, suppressing distributor and rising oil pipe, the joint of decline oil pipe and oil inlet pipe is provided with safety valve, described hydraulic jack and lifter casing are connected with and rush down oil pipe, described lift arm is provided with feedback means, described feedback means is for detecting the induced pressure of lift arm, and when the induced pressure value detected exceeds preset security value, send signal to controller, described controller opens rushes down oil pipe, carries out rushing down oil.What tractor chassis was rational in infrastructure is arranged in after tractor by hydraulic jack, gear pump is changed into CBN316 to increase the lifting force of this tractor lifting mechanism by CBN314, this structure improves the improving performance of tractor to a certain extent, but structure is comparatively complicated, not easy-maintaining, cost is high and automaticity is not high, and the accuracy of control action and the reliability of work all have much room for improvement.Due to expanding economy and scientific and technological progress, domestic tractor has been proposed the tractor of high-power, therefore the requirement for the performance of the lifting gear of tractor is higher, need to develop one to need to develop a kind of automaticity high for this reason, reliable performance, handiness and cheap electric hydraulic control device, and electro-hydraulic suspension control valve assembly is phase main member, as publication number: CN102979774A discloses a kind of control valve block special for tractor hydraulic suspension, comprise valve body and be inserted into the solenoid-operated proportional lifting control valve in described valve body, solenoid-operated proportional decline control valve, one-way valve and safety valve, the profile of described valve body is rectangular shape, solenoid-operated proportional described in the left surface plug-in mounting of described valve body promotes control valve, the left surface of described valve body is provided with oil outlet, solenoid-operated proportional decline control valve described in the front plug-in mounting of described valve body, one-way valve and safety valve, the right flank of described valve body is provided with filler opening and return opening, described valve inner is provided with the oil duct being communicated with each valve member oil circuit described, described solenoid-operated proportional promotes control valve, solenoid-operated proportional decline control valve, one-way valve, safety valve and described oil duct form control valve block special for tractor hydraulic suspension, described valve body is aluminum casting and is square body shape, the shortcoming of this structure is: lack pressure compensator, under working state, Reliability comparotive is low, secondly automaticity is low, inconvenient operation, efficiency is not high yet.
Model utility content
For overcome exist in prior art lack pressure compensator and automatic control system, the problems such as complicated operation, the utility model provides a kind of big-powered tractor lifter valve group.
Technical solution adopted in the utility model is: a kind of big-powered tractor lifter valve group, comprise valve body and be arranged on the ratio lifting control valve on valve body, ratio decline control valve, one-way valve, safety valve, oil outlet A, oil inlet P and oil return inlet T, it is characterized in that: described safety valve and ratio promote the front that control valve is successively set on valve body, described one-way valve and ratio decline control valve are successively set on the left surface of valve body, described oil outlet A is arranged on the upper left side, front of valve body, described oil inlet P is arranged on the lower right above of valve body, described oil return inlet T is arranged on the upper left side above of valve body, described valve inner is provided with the oil duct being communicated with each oil circuit.
On this basis, the oil circuit entrance that described ratio promotes control valve is connected with oil inlet P, the oil circuit outlet that described ratio promotes control valve is connected with the oil circuit entrance of one-way valve, the oil circuit outlet of described one-way valve is connected with oil outlet A, the oil circuit outlet of described ratio decline control valve is connected with oil outlet A, the oil circuit entrance of described ratio decline control valve is connected with oil return inlet T, and described safety valve is connected between described oil return inlet T and oil outlet A.
On this basis, described valve body also includes pressure compensator, and described pressure compensator is arranged on the valve body back side.
On this basis, described pressure compensator is connected with the entrance of one-way valve, and described pressure compensator is connected with oil return inlet T, and described pressure compensator is connected with oil inlet P.
On this basis, the spring force of described pressure compensator is 16.5bar.
On this basis, described oil inlet P, oil outlet A are provided with pressure transducer, and described oil outlet A is connected with oil cylinder, and oil cylinder position is provided with displacement transducer.
On this basis, described valve body also includes controller, and described controller is arranged separately, and described controller is connected with displacement transducer with pressure transducer.
On this basis, described valve body is rectangular shape.
On this basis, described one-way valve is plug-in one-way valve.
On this basis, described valve group maximum service pressure is 250bar.
Compared with prior art, the beneficial effects of the utility model are:
1, safety valve and ratio promote the front that control valve is successively set on valve body, one-way valve and ratio decline control valve are successively set on the left surface of valve body, the position of each valve more tallies with the actual situation, more reasonable, can more conveniently use, the connecting passage of each oil circuit of valve inner and valve is more unobstructed, reacts sensitiveer, accelerates control rate.
2, the back side of valve body is provided with pressure compensator, can ensure when hydraulic pressure changes, and the flow of output keeps within the specific limits, valve group normally can be worked, both added safety coefficient, extend again the working life of valve group.
3, ratio promotes control valve, ratio decline control valve, one-way valve and safety valve and all uses plug-in type, simple and light, compact, is convenient to assembling and maintenance, also more attractive in appearance and practical.Fundamentally make the major control of lifter structure-integrated, thus improve the reliability of the control system of lifter and the flexibility of control.
4, oil inlet P, oil outlet A are provided with pressure transducer, oil outlet A is connected with oil cylinder, oil cylinder position is provided with displacement transducer, pressure transducer is all connected with controller with displacement transducer, use automatic control system, oil inlet P, the pressure of oil outlet A and the change in displacement of lifter oil cylinder can be monitored at any time and feed back to controller, the Automated condtrol of realizable force position sensing, improve efficiency, reduce cost of production.
Accompanying drawing explanation
Fig. 1 is the plan view of big-powered tractor lifter valve group;
Fig. 2 is the plan view of big-powered tractor lifter valve group;
Fig. 3 is the left view of big-powered tractor lifter valve group;
Fig. 4 is the hydraulic schematic diagram of big-powered tractor lifter valve group;
Fig. 5 is the automatic control system schematic diagram of big-powered tractor lifter valve group;
Fig. 6 is the automatic control system Block Diagram of big-powered tractor lifter valve group.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
A kind of big-powered tractor lifter valve group, comprise valve body 1 and be arranged on the ratio lifting control valve 2 on valve body 1, ratio decline control valve 3, one-way valve 4, safety valve 5, oil outlet A6, oil inlet P 7 and oil return inlet T 8, valve body 1 is rectangular shape, safety valve 5 and ratio promote the front that control valve 2 is successively set on valve body 1, one-way valve 4 and ratio decline control valve 3 are successively set on the left surface of valve body 1, ratio promotes control valve 2, ratio decline control valve 3, one-way valve 4, safety valve 5 all uses plug-in type, simple and light, compact, be convenient to assembling and maintenance, also more attractive in appearance and practical.Valve body 1 inside is provided with the oil duct being communicated with each oil circuit, and valve group maximum service pressure is 250bar.Safety valve 5 is spring, plays safety protection effect, and when system pressure exceedes specified value, safety valve 5 is opened, and is discharged by a part of liquid in system, make system pressure be no more than permitted value, thus guarantee system does not have an accident because of overpressure.
Oil outlet A6 is arranged on the upper left side, front of valve body 1, oil inlet P 7 is arranged on the lower right above of valve body 1, oil return inlet T 8 is arranged on the upper left side above of valve body 1, the oil circuit entrance that ratio promotes control valve 2 is connected with oil inlet P 7, the oil circuit outlet that ratio promotes control valve 2 is connected with the oil circuit entrance of one-way valve 4, the oil circuit outlet of one-way valve 4 is connected with oil outlet A6, the oil circuit outlet of ratio decline control valve 3 is connected with oil outlet A6, the oil circuit entrance of ratio decline control valve 3 is connected with oil return inlet T 8, and safety valve 5 is connected between described oil return inlet T 8 and oil outlet A6.
Valve body 1 also includes pressure compensator 9, and described pressure compensator 9 is arranged on valve body 1 back side.Pressure compensator 9 is connected with the entrance of one-way valve 4, pressure compensator 9 is connected with oil return inlet T 8, pressure compensator 9 is connected with oil inlet P 7, the entrance that pressure compensator 9 promotes control valve 2 with ratio is connected, pressure compensator 9 is connected with the entrance of ratio decline control valve 3, and pressure compensator 9 is connected with safety valve 5.The spring force of pressure compensator 9 is 16.5bar.The back side of valve body 1 is provided with pressure compensator 9, and when can ensure that hydraulic pressure changes, the flow of output keeps within the specific limits, valve group normally can be worked, both added safety coefficient, extend again the working life of valve group.
Oil inlet P 7, oil outlet A6 are provided with pressure transducer 10, and oil outlet A6 is connected with oil cylinder, and oil cylinder position is provided with displacement transducer 11.System also includes controller 12, and controller 12 is arranged separately, and pressure transducer 10 is all connected with controller 12 with displacement transducer 11.Use automatic control system, oil inlet P 7, the pressure of oil outlet A6 and the change in displacement of lifter oil cylinder can be monitored at any time changed by A/D converter and feed back to controller 12, controller 12 is changed by D/A, carry out the aperture of control valve, and then pilot pressure and speed, realize Automated condtrol, improve efficiency, reduce cost of production.
When controller 12 does not export control signal, ratio promotes control valve 2 and ratio decline control valve 3 is all in off state, oil hydraulic pump is next oily enters valve block through hydraulic fluid port, promote control valve 2 through ratio again and directly flow back to fuel tank off-load, one-way valve 4 inlet pressure is cut off lower than outlet pressure, ratio decline control valve 3 is turned off, thus oil return inlet T 8 connect hydraulic pressure inner fluid and sealed, lifter highly keeps motionless at certain.
When controller 12 to ratio promote control valve 2 export control signal time, and when not outputing signal to ratio decline control valve 3, then the path that ratio promotes the oil circuit that control valve 2 is connected with oil hydraulic cylinder is opened, and the oil circuit that ratio decline control valve 3 connects is turned off.Oil hydraulic pump comes oilyly to be promoted by oil inlet P 7, ratio that control valve 2 exports, one-way valve 4 flows to oil hydraulic cylinder, gets a promotion.The aperture that ratio promotes control valve 2 strengthens along with the increase of the electric current in coil, and pressure compensator 9 can give pressure compensation when hydraulic pressure changes, make flow remain in certain scope, thus rises to different heights.
When controller 12 exports control signal to ratio decline control valve 3, and when not promoting control valve 2 control signal to ratio, the path of oil circuit that then ratio decline control valve 3 is connected with oil hydraulic cylinder is opened, and the oil circuit that ratio lifting control valve 2 is connected with oil hydraulic cylinder is turned off, oil hydraulic pump is next oily flows back to fuel tank through oil inlet P 7, ratio decline control valve 3 is opened with the oil circuit be connected simultaneously, and the fluid in oil hydraulic cylinder flows back in fuel tank through oil return inlet T 8 and ratio decline control valve 3, is declined.The aperture of ratio decline control valve 3 strengthens along with the increase of the electric current in coil, and pressure compensator 9 can give pressure compensation when hydraulic pressure changes, make flow remain in certain scope, thus drops to different heights.
When controller 12 outputs signal to ratio decline control valve 3 and ratio lifting control valve 2 simultaneously, the oil circuit connected is opened simultaneously, oil hydraulic pump comes the fluid in oily, oil hydraulic cylinder and the fluid in fuel tank can free flow, and the height of the farm implements hung can change according to the change of soil property.
Above-mentioned explanation illustrate and describes preferred embodiment of the present utility model, as previously mentioned, be to be understood that the utility model is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in model utility contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from spirit and scope of the present utility model, then all should in the protection domain of the utility model claims.
Claims (10)
1. a big-powered tractor lifter valve group, comprise valve body (1) and be arranged on ratio lifting control valve (2) on valve body (1), ratio decline control valve (3), one-way valve (4), safety valve (5), oil outlet A (6), oil inlet P (7) and oil return inlet T (8), it is characterized in that: described safety valve (5) and ratio promote the front that control valve (2) is successively set on valve body (1), described one-way valve (4) and ratio decline control valve (3) are successively set on the left surface of valve body (1), described oil outlet A (6) is arranged on the upper left side, front of valve body (1), described oil inlet P (7) is arranged on the lower right above of valve body (1), described oil return inlet T (8) is arranged on the upper left side above of valve body (1), described valve body (1) inside is provided with the oil duct being communicated with each oil circuit.
2. big-powered tractor lifter valve group according to claim 1, it is characterized in that: the oil circuit entrance that described ratio promotes control valve (2) is connected with oil inlet P (7), the oil circuit outlet that described ratio promotes control valve (2) is connected with the oil circuit entrance of one-way valve (4), the oil circuit outlet of described one-way valve (4) is connected with oil outlet A (6), the oil circuit outlet of described ratio decline control valve (3) is connected with oil outlet A (6), the oil circuit entrance of described ratio decline control valve (3) is connected with oil return inlet T (8), described safety valve (5) is connected between described oil return inlet T (8) and oil outlet A (6).
3. big-powered tractor lifter valve group according to claim 1, it is characterized in that: described valve body (1) also includes pressure compensator (9), described pressure compensator (9) is arranged on valve body (1) back side.
4. big-powered tractor lifter valve group according to claim 3, it is characterized in that: described pressure compensator (9) is connected with the entrance of one-way valve (4), described pressure compensator (9) is connected with oil return inlet T (8), and described pressure compensator (9) is connected with oil inlet P (7).
5. big-powered tractor lifter valve group according to claim 4, is characterized in that: the spring force of described pressure compensator (9) is 16.5bar.
6. big-powered tractor lifter valve group according to claim 1, it is characterized in that: described oil inlet P (7), oil outlet A (6) are provided with pressure transducer (10), described oil outlet A (6) is connected with oil cylinder, and oil cylinder position is provided with displacement transducer (11).
7. big-powered tractor lifter valve group according to claim 6, it is characterized in that: described valve body (1) also includes controller (12), described controller (12) is arranged separately, and described controller (12) is connected with displacement transducer (11) with pressure transducer (10).
8. big-powered tractor lifter valve group according to claim 1, is characterized in that: described valve body (1) is rectangular shape.
9. big-powered tractor lifter valve group according to claim 1, is characterized in that: described one-way valve (4) is plug-in one-way valve.
10. big-powered tractor lifter valve group according to claim 1, is characterized in that: described valve group maximum service pressure is 250bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520931441.3U CN205136191U (en) | 2015-11-20 | 2015-11-20 | High horse power tractor lifting mechanism valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520931441.3U CN205136191U (en) | 2015-11-20 | 2015-11-20 | High horse power tractor lifting mechanism valves |
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| Publication Number | Publication Date |
|---|---|
| CN205136191U true CN205136191U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520931441.3U Active CN205136191U (en) | 2015-11-20 | 2015-11-20 | High horse power tractor lifting mechanism valves |
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| CN (1) | CN205136191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298967A (en) * | 2015-11-20 | 2016-02-03 | 湖州生力液压有限公司 | Lifter valve block for high-horsepower tractor |
-
2015
- 2015-11-20 CN CN201520931441.3U patent/CN205136191U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298967A (en) * | 2015-11-20 | 2016-02-03 | 湖州生力液压有限公司 | Lifter valve block for high-horsepower tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Hulian New Energy Industry Technology Service Co.,Ltd. Assignor: HUZHOU SHENGLI HYDRAULIC Co.,Ltd. Contract record no.: X2023330000890 Denomination of utility model: A high horsepower tractor lift valve group Granted publication date: 20160406 License type: Common License Record date: 20231208 |