CN205357128U - Differential formula track combine test vehicle electro -hydraulic control system - Google Patents
Differential formula track combine test vehicle electro -hydraulic control system Download PDFInfo
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- CN205357128U CN205357128U CN201520822453.2U CN201520822453U CN205357128U CN 205357128 U CN205357128 U CN 205357128U CN 201520822453 U CN201520822453 U CN 201520822453U CN 205357128 U CN205357128 U CN 205357128U
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- electromagnetic valve
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- skid steer
- differential
- turn
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Abstract
The utility model provides a differential formula track combine test vehicle electro -hydraulic control system, including turning to mode switch key, turning to guide travel switch module, turning to direct -acting electromagnetic valve module, gear pump, oil tank, back pressure valve, turn to mode switch key, turn to guide travel switch module, turn to direct -acting electromagnetic valve module, gear pump and oil tank series connection in proper order, gear pump and back pressure valve are parallelly connected, and the gear pump is established ties with the oil tank because this electro -hydraulic control system realize that unilateral braking turns to, free radius turns to with differential pirouette to, this control system simple structure, convenient operation, what the ability was fine uses in the control of differential formula track combine performance test car steering mechanism.
Description
Technical field
This utility model relates to steering control system field, particularly relates to a kind of differential speed type crawler-type combine harvester instruction carriage electrohydraulic control system.
Background technology
Oryza sativa L. is as one of main cereal crops of China, and its harvesting approach is mostly adopt track combine；And improving constantly along with Oryza sativa L. per mu yield, and the raising that harvesting efficiency is required by user, big feed quantity united reaper is increasingly becoming the market mainstream；
Big feed quantity track combine overall mass is increasing at present, crawler belt is wider, ground contact length is also bigger, thus stick the rice field operation of weight in soil property, when the steering mode adopting tradition one side brake turns to, the soil harmony that brake side crawler belt brings is long-pending can make steering drag sharply increase, and steering capability is greatly reduced, result even in engine misses when turning to, turn to and become more difficult.There is the steering mechanism of pivot stud function to reduce the heap soil or fertilizer over and around the roots of soil in steering procedure and amass, reduce steering drag, steering capability is greatly improved, make the rice field walking that large-tonnage big feed quantity track combine sticks weight in soil property more flexible, compare existing single turning to hydraulic system realization, easily realized by the mode of operation of " steering yoke+switch " that one side brake turns to, free radius turns to and turns to pattern with differential pivot stud three kinds, convenient and reliable operation, it is possible to the various steering situations in the results process of reply field；The working strength simultaneously making tractor driver's farm work is substantially reduced, and improves work efficiency.
Utility model content
The purpose of this utility model is for the problem controlling complicated operation of the above-mentioned steering mechanism with pivot stud function, and this steering mechanism is controlled by a set of electrohydraulic control system of designed, designed.This utility model electrohydraulic control system can solve the present situation of the complicated operation of the steering mechanism of pivot stud function, and equipment cost is low simultaneously, and convenient and reliable operation, operation intensity is low, is beneficial to tractor driver's long working in field.
For realizing above target, the technical solution adopted in the utility model is: a kind of differential speed type crawler-type combine harvester instruction carriage electrohydraulic control system, including turning to mode selector switch, turn to guide's travel switch module, turning to direct driving type electromagnetic valve module, gear pump, fuel tank, counterbalance valve；
Turn to mode selector switch, turn to guide's travel switch module, turn to direct driving type electromagnetic valve module, gear pump and fuel tank to be sequentially connected in series；Gear pump and counterbalance valve are in parallel, and gear pump and fuel tank are connected；
Mode selector switch is turned to have " 1 gear ", " 2 gear ", " 3 gear " 3 shelves, " 1 gear " controls braking in a turn switch SB1 and is used for realizing skid steer, and " 2 gear " is used for realizing that free radius turns to, " 3 gear " controls to turn to differential control switch SB2 for realizing differential pivot stud；Braking in a turn switchs SB1, and switch SB2 is being connected in parallel of interlocking with turning to differential control；
Turn to left skid steer guide's travel switch, right skid steer guide's travel switch, left differential steering guide's travel switch and right differential steering guide's travel switch that guide's travel switch module includes being connected in parallel；
Braking in a turn switch SB1 is connected in series with left skid steer guide's travel switch in parallel, right skid steer guide's travel switch；Differential control switch SB2 is turned to be connected in series with left differential steering guide's travel switch in parallel and right differential steering guide's travel switch；
Turn to left skid steer direct-acting electromagnetic valve, right skid steer direct-acting electromagnetic valve and differential steering direct-acting electromagnetic valve that direct driving type electromagnetic valve module includes being connected in parallel, and be single automatically controlled two-position three way normally closed solenoid valve；The hydraulic fluid port P of left skid steer direct-acting electromagnetic valve, right skid steer direct-acting electromagnetic valve and differential steering direct-acting electromagnetic valve connects the oil-out of gear pump each through oil pipe, gear pump oiler is connected with the oil-out of fuel tank by oil pipe, hydraulic fluid port O each through oil pipe connect fuel tank oil return opening, each hydraulic fluid port A by oil pipe respectively with left steering hydraulic frictional piece-type brake, right turn hydraulic frictional piece-type brake, differential steering hydraulic frictional piece-type brake oil-in be connected；
Left skid steer guide's travel switch and left skid steer direct-acting electromagnetic valve are connected in series, right skid steer guide's travel switch and right skid steer direct-acting electromagnetic valve are connected in series, and left differential steering guide's travel switch in parallel and right differential steering guide's travel switch are connected in series with differential steering direct-acting electromagnetic valve.
Further, turning to direct driving type electromagnetic valve module also to include the feather valve in parallel with left skid steer direct-acting electromagnetic valve, right skid steer direct-acting electromagnetic valve and differential steering direct-acting electromagnetic valve, feather valve is single automatically controlled two-position three way normally closed solenoid valve；Feather valve hydraulic fluid port P connects the oil-out of gear pump by oil pipe, and gear pump oiler is connected with the oil-out of fuel tank by oil pipe, and hydraulic fluid port O and A connects the oil return opening of fuel tank each through oil pipe.
Further, left skid steer direct-acting electromagnetic valve, include solenoid KA1 including relay YV1, relay YV1, right skid steer direct-acting electromagnetic valve includes relay YV2, and relay YV2 includes solenoid KA2；Left skid steer direct-acting electromagnetic valve, right skid steer direct-acting electromagnetic valve form interlocking by solenoid KA1 and solenoid KA2.
Further, left skid steer direct-acting electromagnetic valve, right skid steer direct-acting electromagnetic valve and differential steering direct-acting electromagnetic valve are connected with left steering hydraulic frictional piece-type brake, right turn hydraulic frictional piece-type brake, differential steering hydraulic frictional piece-type brake respectively.
The beneficial effects of the utility model are, proposing a kind of differential speed type crawler-type combine harvester walking performance instruction carriage being equipped with electrohydraulic control system, this Control system architecture is simple, convenient and reliable operation, equipment cost is low, can solve the present situation of the complicated operation of the steering mechanism of pivot stud function.
1. this electrohydraulic control system single realize one side brake by hydraulic system compared to existing and turns to and compare, easily realized by the mode of operation of " steering yoke+switch " that one side brake turns to, free radius turns to and turns to pattern with differential pivot stud three kinds, convenient and reliable operation, it is possible to the various steering situations in the results process of reply field；The working strength simultaneously making tractor driver's farm work is substantially reduced, and improves work efficiency.
2. turn in mode selector switch and turn to brake switch SB1 and turn to differential control switch SB2 interlocking, such that it is able to prevent the steering direction mistake that maloperation causes, it is achieved accurately control.
3. left skid steer direct-acting electromagnetic valve, right skid steer direct-acting electromagnetic valve form interlocking by solenoid KA1 and solenoid KA2, thus preventing the maloperation of left and right braking.
4. in order to avoid running into ground condition complexity the oil circuit pressure caused cannot be turned to smoothly excessive, feather valve causes that oil circuit breaks, thus ensureing electrohydraulic control system trouble free service.
5. counterbalance valve, it is prevented that occur occurring in oil circuit insufficient pressure, it is ensured that there are enough operating pressures in loop, it is ensured that electrohydraulic control system normal operation.
Accompanying drawing explanation
Fig. 1 is control cabinl pulpit structural representation.
Tu2Shi pivot stud mechanism installation diagram.
Fig. 3 is circuit control system schematic diagram.
Fig. 4 is hydraulic control system schematic diagram.
11-differential shaft；1111-left hand side half shaft gear；1112-right axle gear；1121-left side power output gear；1122-right side power output gear；1131-left side power input gear；1132-right side power input gear；13-differential braking axle；131-differential steering hydraulic frictional piece-type brake；132-differential braking gear；14-steering controlling shaft；Shift fork on the left of 1431-；Shift fork on the right side of 1432-；Braking in a turn gear on the left of 1441-；1442-right hand steering spragging gear；1451-left steering hydraulic frictional piece-type brake；1452-right turn hydraulic frictional piece-type brake；2-turns to mode selector switch；3-turns to guide's travel switch module；311-direction control lever；312-stroke baffle；The left skid steer guide's travel switch of 301-；The right skid steer guide's travel switch of 302-；The left differential steering guide's travel switch of 303-；The right differential steering guide's travel switch of 304-；4-turns to direct driving type electromagnetic valve module；The left skid steer direct-acting electromagnetic valve of 401-；The right skid steer direct-acting electromagnetic valve of 402-；403-differential steering direct-acting electromagnetic valve；404-feather valve；5-gear pump；6-fuel tank；7-counterbalance valve.
Detailed description of the invention
According to Fig. 1 to Fig. 4, electrohydraulic control system embodiment is described specific as follows:
A kind of differential speed type crawler-type combine harvester instruction carriage electrohydraulic control system, it is characterised in that include turning to mode selector switch 2, turn to guide's travel switch module 3, turn to direct driving type electromagnetic valve module 4, gear pump 5, fuel tank 6, counterbalance valve 7；Described turn to mode selector switch 2, turn to guide's travel switch module 3, turn to direct driving type electromagnetic valve module 4, gear pump 5 and fuel tank 6 to be sequentially connected in series；Gear pump 5 and counterbalance valve 7 are in parallel, and gear pump 5 and fuel tank 6 are connected；
Turn to mode selector switch 2 total " 1 gear ", " 2 gear ", " 3 gear " 3 shelves, " 1 gear " controls braking in a turn switch SB1 and is used for realizing skid steer, and " 2 gear " is neutral, " 3 gear " controls to turn to differential control switch SB2 for realizing differential pivot stud；Braking in a turn switchs SB1, and switch SB2 is being connected in parallel of interlocking with turning to differential control；
Turn to left skid steer guide's travel switch 301, right skid steer guide's travel switch 302, left differential steering guide's travel switch 303 and right differential steering guide's travel switch 304 that guide's travel switch module 3 includes being connected in parallel；
Braking in a turn switch SB1 is connected in series with left skid steer guide's travel switch 301 in parallel, right skid steer guide's travel switch 302；Differential control switch SB2 is turned to be connected in series with left differential steering guide's travel switch 303 in parallel and right differential steering guide's travel switch 304；
Turn to left skid steer direct-acting electromagnetic valve 401, right skid steer direct-acting electromagnetic valve 402 and differential steering direct-acting electromagnetic valve 403 that direct driving type electromagnetic valve module 4 includes being connected in parallel, and be single automatically controlled two-position three way normally closed solenoid valve；The hydraulic fluid port P of left skid steer direct-acting electromagnetic valve 401, right skid steer direct-acting electromagnetic valve 402 and differential steering direct-acting electromagnetic valve 403 connects the oil-out of gear pump 5 each through oil pipe, gear pump 5 oiler is connected with the oil-out of fuel tank 6 by oil pipe, hydraulic fluid port O each through oil pipe connect fuel tank oil return opening, each hydraulic fluid port A by oil pipe respectively with left steering hydraulic frictional piece-type brake 1451, right turn hydraulic frictional piece-type brake 1452, differential steering hydraulic frictional piece-type brake 131 oil-in be connected；
The whole Electro-hydraulic Control System Design layout of this electrohydraulic control system is simple, facilitates tractor driver that the operation of the steering mechanism of locomotive is controlled, and operation intensity is low, is beneficial to tractor driver's long working in field.
Turning to direct driving type electromagnetic valve module 4 also to include the feather valve 404 in parallel with left skid steer direct-acting electromagnetic valve 401, right skid steer direct-acting electromagnetic valve 402 and differential steering direct-acting electromagnetic valve 403, feather valve 404 is single automatically controlled two-position three way normally closed solenoid valve；Feather valve 404 hydraulic fluid port P connects the oil-out of gear pump 5 by oil pipe, and gear pump 5 oiler is connected with the oil-out of fuel tank 6 by oil pipe, and hydraulic fluid port O and A connects the oil return opening of fuel tank 6 each through oil pipe.
Feather valve in parallel cannot can turn to the oil circuit pressure caused excessive smoothly in order to avoid running into ground condition complexity and cause that oil circuit breaks, thus ensureing electrohydraulic control system trouble free service.
Left skid steer direct-acting electromagnetic valve 401, right skid steer direct-acting electromagnetic valve 402 form interlocking by solenoid KA1 and solenoid KA2.Left skid steer direct-acting electromagnetic valve 401 includes relay YV1, relay YV1 and includes solenoid KA1, and right skid steer direct-acting electromagnetic valve 402 includes relay YV2, and relay YV2 includes solenoid KA2；Left skid steer direct-acting electromagnetic valve 401, right skid steer direct-acting electromagnetic valve 402 form interlocking by solenoid KA1 and solenoid KA2, and this interlocking structure is prevented from the maloperation of left and right skid steer, so that it is guaranteed that operation is correct.
Embodiment of the present utility model detailed above, described embodiment is shown in the drawings, is illustrative of by the example being described with reference to the drawings, it is intended to explain the present invention, it is impossible to be considered as restriction of the present utility model.
Claims (3)
1. a differential speed type crawler-type combine harvester instruction carriage electrohydraulic control system, it is characterized in that, including turning to mode selector switch (2), turn to guide's travel switch module (3), turning to direct driving type electromagnetic valve module (4), gear pump (5), fuel tank (6), counterbalance valve (7)；Described turn to mode selector switch (2), turn to guide's travel switch module (3), turn to direct driving type electromagnetic valve module (4), gear pump (5) to be sequentially connected in series；Gear pump (5) and counterbalance valve (7) are in parallel, and gear pump (5) and fuel tank (6) are connected；
Described mode selector switch (2) is turned to have " 1 gear ", " 2 gear ", " 3 gear " 3 shelves, " 1 gear " is connected braking in a turn switch SB1 and is used for realizing skid steer, " 2 gear " is used for realizing free radius for neutral and turns to, realizing " 3 gear " connection turns to differential control switch SB2 for realizing differential pivot stud, switchs SB1 by braking in a turn and turns to differential control switch SB2 formation interlock circuit；
Described guide's of turning to travel switch module (3) includes left skid steer guide's travel switch (301) being connected in parallel, right skid steer guide's travel switch (302), left differential steering guide's travel switch (303) and right differential steering guide's travel switch (304)；
Described braking in a turn switch SB1 is connected in series with left skid steer guide's travel switch (301) in parallel, right skid steer guide's travel switch (302)；Differential control switch SB2 is turned to be connected in series with left differential steering guide's travel switch (303) in parallel and right differential steering guide's travel switch (304)；
Described turn to direct driving type electromagnetic valve module (4) to include left skid steer direct-acting electromagnetic valve (401), right skid steer direct-acting electromagnetic valve (402) and the differential steering direct-acting electromagnetic valve (403) being connected in parallel, and be single automatically controlled two-position three way normally closed solenoid valve；Left skid steer direct-acting electromagnetic valve (401), the hydraulic fluid port P of right skid steer direct-acting electromagnetic valve (402) and differential steering direct-acting electromagnetic valve (403) connects the oil-out of gear pump (5) each through oil pipe, gear pump (5) oiler is connected with the oil-out of fuel tank (6) by oil pipe, hydraulic fluid port O connects the oil return opening of fuel tank each through oil pipe, each hydraulic fluid port A by oil pipe respectively with left steering hydraulic frictional piece-type brake (1451), right turn hydraulic frictional piece-type brake (1452), the oil-in of differential steering hydraulic frictional piece-type brake (131) connects.
2. a kind of differential speed type crawler-type combine harvester instruction carriage electrohydraulic control system according to claim 1, it is characterized in that, described turning to direct driving type electromagnetic valve module (4) also to include the feather valve (404) in parallel with left skid steer direct-acting electromagnetic valve (401), right skid steer direct-acting electromagnetic valve (402) and differential steering direct-acting electromagnetic valve (403), feather valve (404) is single automatically controlled two-position three way normally closed solenoid valve；Feather valve (404) hydraulic fluid port P connects the oil-out of gear pump (5) by oil pipe, gear pump (5) oiler is connected with the oil-out of fuel tank (6) by oil pipe, and hydraulic fluid port O and A connects the oil return opening of fuel tank (6) each through oil pipe.
3. a kind of differential speed type crawler-type combine harvester instruction carriage electrohydraulic control system according to claim 1, it is characterized in that, described left skid steer direct-acting electromagnetic valve (401), right skid steer direct-acting electromagnetic valve (402) form interlocking by solenoid KA1 and solenoid KA2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520822453.2U CN205357128U (en) | 2015-10-22 | 2015-10-22 | Differential formula track combine test vehicle electro -hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520822453.2U CN205357128U (en) | 2015-10-22 | 2015-10-22 | Differential formula track combine test vehicle electro -hydraulic control system |
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| Publication Number | Publication Date |
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| CN205357128U true CN205357128U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520822453.2U Withdrawn - After Issue CN205357128U (en) | 2015-10-22 | 2015-10-22 | Differential formula track combine test vehicle electro -hydraulic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105340468A (en) * | 2015-10-22 | 2016-02-24 | 江苏大学 | Electro-hydraulic control system for differential type tracked combine harvester test vehicle and control method thereof |
-
2015
- 2015-10-22 CN CN201520822453.2U patent/CN205357128U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105340468A (en) * | 2015-10-22 | 2016-02-24 | 江苏大学 | Electro-hydraulic control system for differential type tracked combine harvester test vehicle and control method thereof |
| CN105340468B (en) * | 2015-10-22 | 2017-04-05 | 江苏大学 | A kind of differential speed type crawler-type combine harvester instruction carriage electrohydraulic control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160706 Effective date of abandoning: 20170405 |