CN211116892U - Hydraulic control system of rice harvester - Google Patents
Hydraulic control system of rice harvester Download PDFInfo
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- CN211116892U CN211116892U CN201922124777.XU CN201922124777U CN211116892U CN 211116892 U CN211116892 U CN 211116892U CN 201922124777 U CN201922124777 U CN 201922124777U CN 211116892 U CN211116892 U CN 211116892U
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Abstract
The utility model discloses a hydraulic control system of a rice harvester, the oil outlet of an oil pump is respectively communicated with the oil inlets of a steady flow valve group and a steering electromagnetic valve group, the working oil port of the steering electromagnetic valve group and one working oil port of the steady flow valve group are both communicated with the oil inlet of a steering oil cylinder, the oil outlet of the steering electromagnetic valve group and the other working oil port of the steady flow valve group are both communicated with one end of an oil return pipe, the oil inlets and the oil outlets of a header mechanical valve group, a reel pulling electromagnetic valve group and a grain unloading barrel electromagnetic valve group are sequentially connected on the oil return pipe, and one end of the oil return pipe, which is far away from the steady flow valve group, is communicated with the inside of the oil groove, the steering oil cylinder is communicated with the steering electromagnetic valve group, the working oil ports of the header mechanical valve group, the reel pulling electromagnetic valve group and the grain unloading cylinder electromagnetic valve group are respectively communicated with the oil inlet of one hydraulic lock, and the working oil port of each hydraulic lock is respectively communicated with the oil nozzles of the corresponding header oil cylinder, the reel pulling oil cylinder and the grain unloading cylinder oil cylinder. The integration is good, and the cost performance is higher.
Description
Technical Field
The utility model belongs to agricultural machine field especially relates to a rice harvester hydraulic control system.
Background
At present, with the development of agricultural mechanization, the rice combine harvester is widely applied. As an important hydraulic control part of the whole rice machine, the convenience, flexibility, compositeness, reliability and the like of the control directly influence the performance of the whole machine. The existing hydraulic system of the rice machine is mainly operated by a mechanical valve, can not realize compound action, has lower performance, reliability and ergonomic level and needs to be improved.
The existing rice harvester has two common hydraulic control systems, one of which adopts a single pump system, the header oil cylinder and the steering oil cylinder share one composite handle but can not realize composite action, wherein the steering system controls the steering oil cylinder to realize steering by a mechanical valve, the steering stability is poor, the reel oil cylinder and the grain unloading cylinder respectively use one handle, when the header oil cylinder and the reel oil cylinder descend, the header oil cylinder and the reel oil cylinder descend by opening a hydraulic control one-way valve (one-way hydraulic lock) and descending by self weight, and after the hydraulic control one-way valve is opened by pumped oil, all flow overflows through a safety valve; the other type is that a double-pump system is adopted, the cutting table oil cylinder and the steering oil cylinder share one composite handle to realize composite action, wherein the steering system controls the steering oil cylinder to realize steering through an electromagnetic valve and a mechanical stay wire control valve rod, the stability is slightly improved compared with pure mechanical control, and the reel oil cylinder and the grain unloading cylinder respectively use one handle. The two hydraulic operating systems described above have the drawback that: the single pump system can not realize the composite action of steering and other working devices (a cutting table oil cylinder, a reel oil cylinder and an grain unloading cylinder), namely, the cutting table, the reel and the grain unloading cylinder can not lift when the steering is performed; the double-pump system can realize compound action, but has complex structure and poor cost performance, and the whole hydraulic control systems have poor steering stability and serious turning shaking.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a by the single pump fuel feeding, and can realize turning to the compound action of arbitrary manipulation all the way in action and the header goes up and down, reel goes up and down, unloads a grain section of thick bamboo and goes up and down, each valves is integrated together simultaneously, and integrated nature is good, and the price/performance ratio is higher.
In order to achieve the above purpose, the technical solution of the present invention is as follows: the utility model provides a rice harvester hydraulic control system, includes oil groove, oil pump, stationary flow valves, turns to electromagnetism valves, header machinery valves, pulls out standing grain wheel electromagnetism valves, unloads grain section of thick bamboo electromagnetism valves, turns to the hydro-cylinder, header hydro-cylinder, pulls out standing grain wheel hydro-cylinder and unloads grain section of thick bamboo hydro-cylinder, the oil inlet of oil pump with intercommunication in the oil groove, the oil-out of oil pump respectively with the stationary flow valves with turn to the oil inlet intercommunication of electromagnetism valves, the stationary flow valves has two working fluid ports, turn to a working fluid port of electromagnetism valves and a working fluid port of stationary flow valves and all with the oil inlet intercommunication of turning to the hydro-cylinder, turn to another working fluid port of electromagnetism valves's oil-out and stationary flow valves of electromagnetism valves and return oil pipe's one end intercommunication, header machinery valves, pull out standing grain wheel electromagnetism valves and unload the oil inlet and the oil, The oil inlets of the reel electromagnetic valve group and the grain unloading barrel electromagnetic valve group are respectively communicated with the oil outlet of the steering electromagnetic valve group through a check valve, the check valve is used for avoiding the backflow of hydraulic oil at the oil inlets of the header mechanical valve group, the reel electromagnetic valve group and the grain unloading barrel electromagnetic valve group, the oil return pipe is far away from one end of the steady flow valve group and is communicated with the inside of the oil tank, the oil outlet of the steering oil cylinder is communicated with the oil return port of the steering electromagnetic valve group, the working oil ports of the header mechanical valve group, the reel electromagnetic valve group and the grain unloading barrel electromagnetic valve group are respectively communicated with the oil inlet of a hydraulic lock, the working oil port of each hydraulic lock is respectively communicated with the oil nozzles corresponding to the header oil cylinder, the reel oil cylinder and the grain unloading barrel oil cylinder, and the oil outlet of each hydraulic lock is respectively communicated with the oil nozzles corresponding to the header mechanical valve group and the reel electromagnetic, The oil return ports of the grain unloading barrel electromagnetic valve group are communicated, and the oil discharge ports of the header mechanical valve group, the grain pulling wheel electromagnetic valve group and the grain unloading barrel electromagnetic valve group are respectively communicated with the interior of the oil groove.
The beneficial effects of the above technical scheme are that: the steering oil cylinder and the header oil cylinder, the reel oil cylinder and the grain unloading cylinder can be operated in a combined way by supplying oil through a single pump, stable oil pressure is preferentially supplied to the steering oil cylinder through a steady flow valve group, and then the rest oil pressure is shunted to any one of a header mechanical valve group, a reel electromagnetic valve group and a grain unloading cylinder electromagnetic valve group; in addition, the flow stabilizing valve bank, the steering electromagnetic valve bank, the header mechanical valve bank, the reel electromagnetic valve bank and the grain unloading cylinder electromagnetic valve bank are integrated together, so that the integration is good, and the cost performance is high.
In the technical scheme, the oil inlet of the steady flow valve group is also provided with a first overflow valve, and the overflow port of the first overflow valve is communicated with the inside of the oil groove.
The beneficial effects of the above technical scheme are that: therefore, the phenomenon of oil leakage caused by overlarge oil pressure at the oil inlet of the flow stabilizing valve group can be avoided.
In the technical scheme, a second overflow valve is further arranged on a working oil port communicated with the oil inlet of the steering oil cylinder, and an overflow port of the second overflow valve is communicated with the inside of the oil groove.
The beneficial effects of the above technical scheme are that: so can avoid stationary flow valves and the stability that the oil pressure of the working oil mouth department of steering cylinder oil inlet intercommunication is too high and influence the automobile body and turn to, can avoid appearing the phenomenon of oil leak because of the oil pressure is too high simultaneously.
The technical scheme includes that the steering oil cylinder is provided with two shuttle valves, two oil outlets of the shuttle valves are respectively communicated with two oil inlets of the steering oil cylinder, the oil inlets of the shuttle valves are communicated with working oil ports corresponding to the steady flow valve bank, the steering electromagnetic valve bank is provided with two working oil ports which can be switched on, the two working oil ports of the steering electromagnetic valve bank are respectively communicated with the two oil inlets of the steering oil cylinder, and the oil outlets of the steering oil cylinders are communicated with oil return ports of the steering electromagnetic valve bank.
The beneficial effects of the above technical scheme are that: when the steady flow valve group supplies oil to the steering electromagnetic valve group on two sides of the steering oil cylinders, one steering oil cylinder can obtain oil, the other steering oil cylinder can not obtain oil, or the two steering oil cylinders can not obtain oil.
In the technical scheme, the two reel pulling oil cylinders are arranged, and oil nozzles of the two reel pulling oil cylinders are communicated with working oil ports corresponding to the hydraulic locks.
The beneficial effects of the above technical scheme are that: so that the two reel cylinders synchronously run.
The technical scheme is that the oil pump device further comprises a filter, an oil inlet of the filter is communicated with an oil outlet of the oil pump, and an oil outlet of the filter is communicated with oil inlets of the steady flow valve bank and the steering electromagnetic valve bank respectively.
The beneficial effects of the above technical scheme are that: the hydraulic oil pumped by the oil pump can be filtered, so that the whole hydraulic system can be protected, the service life of the hydraulic system is prolonged, and the service life of the hydraulic oil is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic control system of a rice harvester according to an embodiment of the present invention.
In the figure: the device comprises an oil tank 1, an oil pump 2, a flow stabilizing valve group 3, a steering electromagnetic valve group 4, a header mechanical valve group 5, a reel electromagnetic valve group 6, a reel electromagnetic valve group 7, a reel electromagnetic valve group 8, a steering oil cylinder 9, a header oil cylinder 10, a reel oil cylinder 11, a reel oil cylinder 12, an oil return pipe 13, a hydraulic lock 14, a check valve 15, a first overflow valve 16, a second overflow valve 16, a shuttle valve 17 and a filter 18.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, this embodiment provides a hydraulic control system for a rice harvester, which includes an oil groove 1, an oil pump 2, a steady flow valve group 3, a steering electromagnetic valve group 4, a header mechanical valve group 5, a reel electromagnetic valve group 6, a grain unloading barrel electromagnetic valve group 7, a steering oil cylinder 8, a header oil cylinder 9, a reel oil cylinder 10 and a grain unloading barrel oil cylinder 11, wherein an oil inlet of the oil pump 2 is communicated with the oil groove 1, an oil outlet of the oil pump 2 is respectively communicated with oil inlets of the steady flow valve group 3 and the steering electromagnetic valve group 4, the steady flow valve group 3 has two working oil ports, the working oil port of the steering electromagnetic valve group 4 and one working oil port of the steady flow valve group 3 are both communicated with the oil inlet of the steering oil cylinder 8, the oil outlet of the steering electromagnetic valve group 4 and the other working oil port of the steady flow valve group 3 are both communicated with one end of, The oil inlets and the oil outlets of the reel pulling electromagnetic valve group 6 and the grain unloading cylinder electromagnetic valve group 7 are sequentially connected in series, the oil inlets of the header mechanical valve group 5, the reel pulling electromagnetic valve group 6 and the grain unloading cylinder electromagnetic valve group 7 are communicated with the oil outlet of the steering electromagnetic valve group 4 through a check valve 14 respectively, the check valve 14 is used for avoiding corresponding to the hydraulic oil backflow at the oil inlets of the header mechanical valve group 5, the reel pulling electromagnetic valve group 6 and the grain unloading cylinder electromagnetic valve group 7, one end of the oil return pipe 12, which is far away from the steady flow valve group 3, is communicated with the oil groove 1, the oil outlet of the steering oil cylinder 8 is communicated with the oil return port of the steering electromagnetic valve group 4, the working oil ports of the header mechanical valve group 5, the reel pulling electromagnetic valve group 6 and the grain unloading cylinder electromagnetic valve group 7 are communicated with the oil inlet of a hydraulic lock 13 respectively, and the working oil port of each hydraulic lock 13 is communicated with the, The oil outlets of the grain pulling wheel oil cylinder 10 and the grain discharging barrel oil cylinder 11 are communicated with each other, and are respectively communicated with the oil return ports of the header mechanical valve group 5, the grain pulling wheel electromagnetic valve group 6 and the grain discharging barrel electromagnetic valve group 7, and the oil discharge ports of the header mechanical valve group 5, the grain pulling wheel electromagnetic valve group 6 and the grain discharging barrel electromagnetic valve group 7 are respectively communicated with the oil grooves. The steering oil cylinder and the header oil cylinder, the reel oil cylinder and the grain unloading cylinder can be operated in a combined way by supplying oil through a single pump, stable oil pressure is preferentially supplied to the steering oil cylinder through a steady flow valve group, and then the rest oil pressure is shunted to any one of a header mechanical valve group, a reel electromagnetic valve group and a grain unloading cylinder electromagnetic valve group; in addition, the flow stabilizing valve bank, the steering electromagnetic valve bank, the header mechanical valve bank, the reel electromagnetic valve bank and the grain unloading cylinder electromagnetic valve bank are integrated together, so that the integration is good, and the cost performance is high.
The oil inlets of the header mechanical valve group 5, the standing grain pulling wheel electromagnetic valve group 6 and the grain unloading barrel electromagnetic valve group 7 are respectively communicated with the oil outlets of the steering electromagnetic valve group 4 through the check valves, so that the parallel connection of oil passages of the header mechanical valve group 5, the standing grain pulling wheel electromagnetic valve group 6 and the grain unloading barrel electromagnetic valve group 7 is realized, the header mechanical valve group 5, the standing grain pulling wheel electromagnetic valve group 6 and the grain unloading barrel electromagnetic valve group 7 can synchronously work, and the operation performance of the whole machine is improved.
Wherein, the sequential installation sequence of the header mechanical valve group 5, the reel electromagnetic valve group 6 and the grain unloading cylinder electromagnetic valve group 7 on the oil return pipe can be changed at will.
In the technical scheme, a second overflow valve 16 is further arranged on a working oil port communicated with the oil inlet of the steering oil cylinder 8 through the flow stabilizing valve group 3, and an overflow port of the second overflow valve 16 is communicated with the inside of the oil groove 1. So can avoid stationary flow valves and the stability that the oil pressure of the working oil mouth department of steering cylinder oil inlet intercommunication is too high and influence the automobile body and turn to, can avoid appearing the phenomenon of oil leak because of the oil pressure is too high simultaneously.
Still include a shuttle valve 17 among the above-mentioned technical scheme, just steering cylinder 8 is equipped with two, two oil-outs of shuttle valve 17 respectively with two steering cylinder 8's oil inlet intercommunication, just shuttle valve 17's oil inlet with the working oil mouth that stationary flow valves 3 corresponds communicates, steering solenoid valve group 4 has two working oil mouths that can choose to switch on, just two working oil mouths of steering solenoid valve group 4 respectively with two steering cylinder 8's oil inlet intercommunication, two steering cylinder 8's oil-out all with steering solenoid valve group 4's oil return opening intercommunication. The two steering oil cylinders are sequentially supplied with oil through the flow stabilizing valve group and the steering electromagnetic valve group, so that one steering oil cylinder can obtain oil, the other steering oil cylinder can not obtain oil, or the two steering oil cylinders can not obtain oil.
In the technical scheme, the two reel pulling oil cylinders 10 are arranged, and oil ports of the two reel pulling oil cylinders 10 are communicated with working oil ports corresponding to the hydraulic locks 13, so that the two reel pulling oil cylinders synchronously run.
The technical scheme includes that the hydraulic system further comprises a filter 18, an oil inlet of the filter 18 is communicated with an oil outlet of the oil pump 2, and an oil outlet of the filter 18 is communicated with oil inlets of the steady flow valve group 3 and the steering electromagnetic valve group 4 respectively, so that hydraulic oil pumped out by the oil pump can be filtered, the whole hydraulic system can be protected, the service life of the hydraulic system is prolonged, and the service life of the hydraulic oil is prolonged.
The principle of the utility model is that: the oil pump 1 provides power sources for a steering oil cylinder, a cutting table oil cylinder, a reel oil cylinder and a grain unloading cylinder;
when the end b1 of the steering electromagnetic valve group 4 is electrified, the whole vehicle turns right, and when the end a1 is electrified, the whole vehicle turns left;
when the control lever is in a neutral position, the corresponding hydraulic lock 13 maintains pressure of the header oil cylinder, so that the header can be stopped at any position in a working stroke;
the b3 end of the reel electromagnetic valve group 6 is electrified, the reel is lifted, and the reel with the electrified end a3 descends; when the reel electromagnetic valve group 6 is not powered on, the corresponding hydraulic lock 13 maintains pressure of the reel oil cylinder, so that the reel can be stopped at any position in the working stroke;
the b4 end of the grain discharging barrel electromagnetic valve group 7 is electrified, the grain discharging barrel is lifted, and the a4 end is electrified and the grain discharging barrel is descended. When the electromagnetic valve group of the grain unloading barrel is not powered on, the corresponding hydraulic lock 13 maintains pressure of the oil cylinder of the grain unloading barrel, so that the grain unloading barrel can be stopped at any position in the working stroke.
When the whole vehicle control system synchronously controls any one of the steering electromagnetic valve group 4 and the header mechanical valve group 5, the reel electromagnetic valve group 6 and the grain unloading barrel electromagnetic valve group 7, the stable flow can be firstly provided for the steering valve group by the stable flow valve group 2, and other flows are shunted to the header mechanical valve group 5, the reel electromagnetic valve group 6 and the grain unloading barrel electromagnetic valve group 7, so that the composite action of the steering electromagnetic valve group 4 and the header mechanical valve group 5, the reel electromagnetic valve group 6 and the grain unloading barrel electromagnetic valve group 7 is more stable, and the convenience of users is greatly improved.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a rice harvester hydraulic control system, its characterized in that, including oil groove (1), oil pump (2), stationary flow valves (3), turn to solenoid valve group (4), header machinery valves (5), pull out standing grain wheel solenoid valve group (6), unload grain section of thick bamboo solenoid valve group (7), steering cylinder (8), header hydro-cylinder (9), pull out standing grain wheel hydro-cylinder (10) and unload grain section of thick bamboo hydro-cylinder (11), the oil inlet of oil pump (2) with intercommunication in oil groove (1), the oil-out of oil pump (2) respectively with the oil inlet intercommunication of stationary flow valves (3) and turn to solenoid valve group (4), stationary flow valves (3) have two working fluid ports, the working fluid port of turning to solenoid valve group (4) and a working fluid port of stationary flow valves (3) all with the oil inlet intercommunication of steering cylinder (8), turn to another working fluid port of oil port and stationary flow valves (3) of solenoid valve group (4) and return oil pipe (12) The one end intercommunication, the oil inlet and the oil-out of header machinery valves (5), pull out standing grain wheel solenoid valve group (6) and unload a grain section of thick bamboo solenoid valve group (7) establish ties in proper order, just the oil inlet of header machinery valves (5), pull out standing grain wheel solenoid valve group (6), unload a grain section of thick bamboo solenoid valve group (7) still respectively through a check valve (14) with turn to the oil-out intercommunication of solenoid valve group (4), check valve (14) are used for avoiding corresponding the hydraulic oil backward flow of header machinery valves (5), pull out standing grain wheel solenoid valve group (6), unload a grain section of thick bamboo solenoid valve group (7) oil inlet department, scavenge pipe (12) are kept away from the one end of stationary flow valves (3) with intercommunication in oil groove (1), turn to the oil-out of hydro-cylinder (8) with turn to the oil return connection of solenoid valve group (4), header machinery valves (5), The hydraulic oil port of pulling standing grain wheel electromagnetism valves (6) and unloading a grain section of thick bamboo electromagnetism valves (7) communicates with the oil inlet of a hydraulic pressure lock (13), every respectively the working oil port of hydraulic pressure lock (13) respectively with correspond header hydro-cylinder (9), pull standing grain wheel hydro-cylinder (10) and unload the glib talker intercommunication of a grain section of thick bamboo hydro-cylinder (11), and every the oil-out of hydraulic pressure lock (13) respectively with correspond header machinery valves (5), pull standing grain wheel electromagnetism valves (6), unload the oil return opening intercommunication of a grain section of thick bamboo electromagnetism valves (7), header machinery valves (5), pull standing grain wheel electromagnetism valves (6), unload the oil discharge opening of a grain section of thick bamboo electromagnetism valves (7) respectively with communicate in the oil groove.
2. The hydraulic control system of the rice harvester according to claim 1, characterized in that a first overflow valve (15) is further arranged at an oil inlet of the steady flow valve block (3), and an overflow port of the first overflow valve (15) is communicated with the inside of the oil groove (1).
3. The hydraulic control system of the rice harvester according to claim 1, wherein a second overflow valve (16) is further arranged on a working oil port of the steady flow valve set (3) communicated with the oil inlet of the steering cylinder (8), and an overflow port of the second overflow valve (16) is communicated with the inside of the oil tank (1).
4. The hydraulic control system for the rice harvester according to claim 3, further comprising two shuttle valves (17), wherein the number of the steering cylinders (8) is two, two oil outlets of the shuttle valves (17) are respectively communicated with oil inlets of the two steering cylinders (8), an oil inlet of the shuttle valve (17) is communicated with a working oil port corresponding to the steady-flow valve bank (3), the steering solenoid valve bank (4) is provided with two working oil ports capable of being selectively communicated, the two working oil ports of the steering solenoid valve bank (4) are respectively communicated with oil inlets of the two steering cylinders (8), and oil outlets of the two steering cylinders (8) are both communicated with an oil return port of the steering solenoid valve bank (4).
5. The hydraulic control system of the rice harvester according to claim 1, wherein two reel cylinders (10) are provided, and oil ports of the two reel cylinders (10) are communicated with working oil ports of the corresponding hydraulic locks (13).
6. The hydraulic control system of the rice harvester according to claim 1, further comprising a filter (18), wherein an oil inlet of the filter (18) is communicated with an oil outlet of the oil pump (2), and an oil outlet of the filter (18) is respectively communicated with oil inlets of the steady flow valve group (3) and the steering solenoid valve group (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922124777.XU CN211116892U (en) | 2019-12-02 | 2019-12-02 | Hydraulic control system of rice harvester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922124777.XU CN211116892U (en) | 2019-12-02 | 2019-12-02 | Hydraulic control system of rice harvester |
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| Publication Number | Publication Date |
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| CN211116892U true CN211116892U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922124777.XU Active CN211116892U (en) | 2019-12-02 | 2019-12-02 | Hydraulic control system of rice harvester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066443A (en) * | 2023-02-23 | 2023-05-05 | 湖州生力液压有限公司 | Energy-saving four-way integrated control valve |
-
2019
- 2019-12-02 CN CN201922124777.XU patent/CN211116892U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066443A (en) * | 2023-02-23 | 2023-05-05 | 湖州生力液压有限公司 | Energy-saving four-way integrated control valve |
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Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai leiwo Heavy Industry Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: LOVOL HEAVY INDUSTRY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai Lovol Intelligent Agricultural Technology Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Weichai leiwo Heavy Industry Co.,Ltd. |