CN102511238A - Small-sized full-hydraulic self-propelled windrower - Google Patents
Small-sized full-hydraulic self-propelled windrower Download PDFInfo
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- CN102511238A CN102511238A CN2011104367340A CN201110436734A CN102511238A CN 102511238 A CN102511238 A CN 102511238A CN 2011104367340 A CN2011104367340 A CN 2011104367340A CN 201110436734 A CN201110436734 A CN 201110436734A CN 102511238 A CN102511238 A CN 102511238A
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Abstract
The invention discloses a small-sized full-hydraulic self-propelled windrower. Presently, small-sized windrowers are basically fully-chemically operated and complex in mechanical structure. The mall-sized full-hydraulic self-propelled windrower is in a walking structure, drive of a cutter and conveying of crops are completed by only one hydraulic motor, lifting of a header is controlled through only one hydraulic cylinder, the windrower is supported by a front universal guide wheel and two rear drive wheels, the three wheels are in three-point symmetrical distribution, the two drive wheels are respectively driven by a hydraulic motor, and the windrower is powered by one single-cylinder internal combustion engine which drives an oil pump to power a hydraulic cylinder. Lifting and cutting actions of the header can be achieved conveniently under control of electromagnetic valves, fast advance and slow advance are supplied, and operations of turning left, turning right, backing and stopping can be performed easily. The mechanical structure of the small-sized full-hydraulic self-propelled windrower is simplified, and the small-sized full-hydraulic self-propelled windrower is simple and safe in operation, high in reliability and low in labor intensity.
Description
Technical field
The invention belongs to agricultural machinery technological field, be specifically related to a kind of small-sized all-hydraulic self-propelled swather.
Background technology
The Small machine for harvesting and drying grain in sun volume is little, and is in light weight, is fit to little field block operations and uses.General Small machine for harvesting and drying grain in sun belongs to repacking on basis, hand tractor chassis and next small-scale agricultural machinery.Present Small machine for harvesting and drying grain in sun belongs to fully mechanical basically and controls the frame for movement relative complex.
Summary of the invention
The present invention is directed to the deficiency of prior art, a kind of small-sized all-hydraulic self-propelled swather is provided.
Small-sized all-hydraulic self-propelled swather comprises nearside divider, drive pulley, driven pulley, belt conveyor, CD-ROM drive motor, shaft coupling, ceding of Taiwan skeleton, crank mechanism, taiwan cut off and landing hydraulic control system, sleeve, guide rail, oil pump, oil pump drive unit, fuel tank, Hydraulic Station, engine, control panel, handrail, vehicle frame, universal guide wheel and drive wheel assemblies.
Nearside divider is installed on the ceding of Taiwan skeleton; CD-ROM drive motor drives drive pulley and crank through shaft coupling, and drive pulley drives driven pulley through belt conveyor, and crank drives cutter and does linear reciprocating motion; Crop is cut off, it is transported to the ceding of Taiwan left side by belt conveyor; Ceding of Taiwan skeleton is connected with an end of elevating ram; The other end of elevating ram is installed on the vehicle frame; Ceding of Taiwan skeleton end is provided with sleeve, establishes two upright guide rails on the vehicle frame, and the end of ceding of Taiwan skeleton is installed on the guide rail through sleeve; Under the effect of elevating ram, ceding of Taiwan skeleton is moved up and down along guide rail; Vehicle frame is supported by a universal guide wheel and two driving wheels, is bikini and arranges that engine is loaded on right side, vehicle frame rear end, drives oil pump through the oil pump drive unit; Wheel drive motor hydraulic control system is contained on the vehicle frame, makes Hydraulic Station, places left side, vehicle frame rear portion; Fuel tank places the centre position at vehicle frame rear portion, and handrail is two steel cylindrical tube, is installed in the vehicle frame both sides respectively, and control panel is arranged between two handrails.
Crank mechanism comprises knife bar, handle of a knife, crank, driving pulley axle, Roller Shaft, roller and finger beam, and the drive pulley axle links through flat key and crank; Roller links through Roller Shaft and crank; Driving pulley axle and Roller Shaft center line apart from the stroke that equals cutter on the value; Wherein handle of a knife is riveted on the knife bar as a part; The active length of chute equals the twice of knife stroke; Width is more bigger than roller diameter, and handle of a knife and knife bar are contained on the finger beam, can slide along finger beam.
Drive wheel assemblies comprises wheel drive motor, rubbercushioned sleeve bearing coupling, driving wheel, usher to seat bearing, interior rolling bearing units, support, axletree, driving-disc outward; The wheel drive motor is installed on the vehicle frame through support; The output shaft of wheel drive motor connects with flat key with rubbercushioned sleeve bearing coupling; The output shaft of wheel drive motor drives axletree and driving-disc through rubbercushioned sleeve bearing coupling, thereby drives the driving wheel rotation; The axletree two ends are fixed on the vehicle frame through the bearing of usheing to seat outward, interior rolling bearing units.
Wheel drive motor hydraulic control system comprise stop to move magnetic valve, the flow speed control valve of moveing backward, turn to magnetic valve, choke valve, turn to overflow valve, braking safety valve, advance-astern maneuvering valve, flow divider, big flow flow speed control valve, low discharge flow speed control valve, gear shift control valve and wheel drive motor; The gear shift control valve is the 2/2-way magnetic valve; The inlet of gear shift control valve connects working connection, and the outlet of gear shift control valve connects big flow flow speed control valve; The low discharge flow speed control valve is attempted by between the outlet of gear shift control valve inlet and big flow flow speed control valve; Advance-astern maneuvering valve is the 3-position 4-way solenoid directional control valve; The a interface of 3-position 4-way solenoid directional control valve meets the output interface a of flow divider; The b interface of 3-position 4-way solenoid directional control valve is connected with an end of the input that turns to overflow valve, an end that turns to magnetic valve and choke valve; The c interface of 3-position 4-way solenoid directional control valve is connected the d interface connected tank of 3-position 4-way solenoid directional control valve with an end of braking safety valve, wheel drive motor with the end that moves magnetic valve that stops; Turn to the end of the other end order of magnetic valve, turn to the other end of flow speed control valve to be connected with the other end that moves magnetic valve that stops with the other end of wheel drive motor to flow speed control valve.Wherein flow divider output interface a and delivery outlet b connect the left and right wheels oil circuit respectively, and the left and right wheels oil circuit is identical.
The taiwan cut off and landing hydraulic control system comprises taiwan cut off and landing oil cylinder, taiwan cut off and landing control valve and taiwan cut off and landing speed control valve; Taiwan cut off and landing speed control valve input is connected on the hydraulic system working connection; The a interface of taiwan cut off and landing speed control valve output termination taiwan cut off and landing control valve; The b interface of taiwan cut off and landing control valve is connected with an end of taiwan cut off and landing oil cylinder, and the c interface of taiwan cut off and landing control valve is connected with the other end of taiwan cut off and landing oil cylinder, the d interface connected tank of taiwan cut off and landing control valve.
Beneficial effect of the present invention: the present invention adopts all-hydraulic manipulation to drive and control the action of advancing, turn, move backward, stop of cutting, crop conveying, taiwan cut off and landing and the vehicle of swather.It is simple to have frame for movement, simple, convenient, and machine run steadily, reliable operation, impact be little, and labor intensity of operating staff is little, can adapt to the piece operation of little field, small and exquisite advantage flexibly.Through the adjustment of relevant hydraulic control valve, the working speed of flexibly changing ceding of Taiwan motor, thus change cutting speed and transporting velocity; Combine through flow control valve and engine oil gate control, make the machine forwarding speed flexibility and changeability, can realize very low travel speed.
Description of drawings
Fig. 1 is an end view of the present invention;
Fig. 2 is a vertical view of the present invention;
Fig. 3 is the crank mechanism sketch map;
Fig. 4 is the wheel drive structural representation;
Fig. 5 is a swather drive system single-wheel hydraulic schematic diagram;
Fig. 6 is taiwan cut off and landing hydraulic control figure.
Embodiment
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
As depicted in figs. 1 and 2, small-sized all-hydraulic self-propelled swather comprises nearside divider 1, drive pulley 2, driven pulley 3, belt conveyor 4, CD-ROM drive motor 5, shaft coupling 6, ceding of Taiwan skeleton 7, crank mechanism, taiwan cut off and landing hydraulic control system, sleeve 15, guide rail 16, oil pump 17, oil pump drive unit 18, fuel tank 19, Hydraulic Station 20, engine 21, control panel 22, handrail 23, vehicle frame 24, universal guide wheel 25 and drive wheel assemblies 26.
Nearside divider 1 is installed on the ceding of Taiwan skeleton 7; CD-ROM drive motor 5 drives drive pulley 2 and crank 9 through shaft coupling 6, and drive pulley 2 drives driven pulley 3 through belt conveyor 4, and crank 9 drives cutter 8 and does linear reciprocating motion; Crop is cut off, it is transported to the ceding of Taiwan left side by belt conveyor 4; Ceding of Taiwan skeleton 7 is connected with an end of elevating ram 14; The other end of elevating ram 14 is installed on the vehicle frame 24; Ceding of Taiwan skeleton 7 ends are provided with sleeve 15, establish two upright guide rails 16 on the vehicle frame, and the end of ceding of Taiwan skeleton 7 is installed on the guide rail 16 through sleeve; Under the effect of elevating ram 14, ceding of Taiwan skeleton is moved up and down along guide rail; Vehicle frame is supported by a universal guide wheel 25 and two driving wheels 43, is bikini and arranges that engine 21 is loaded on right side, vehicle frame 24 rear end, drives oil pump 17 through oil pump drive unit 18; Wheel drive motor hydraulic control system is contained on the vehicle frame 24, makes Hydraulic Station 20, places left side, vehicle frame 24 rear portions; Fuel tank 23 places the centre position at vehicle frame 24 rear portions, and handrail 23 is two steel cylindrical tube, is installed in the vehicle frame both sides respectively, and control panel 22 is arranged between two handrails.
During work, CD-ROM drive motor 5 drives the axle of driving pulleys 2, and drives cutter 8 through crank 9 crop is cut off, and simultaneously, belt conveyor rotates counterclockwise, and the crop that the ceding of Taiwan is cut off is delivered on the left of the ceding of Taiwan.
As shown in Figure 3, crank mechanism comprises knife bar 49 and handle of a knife 50, crank 9, driving pulley axle 10, Roller Shaft 11, roller 12, and drive pulley axle 10 links through flat key and crank 9; Roller 12 links through Roller Shaft 11 and crank 9; Driving pulley axle 10 and Roller Shaft 11 center lines apart from the stroke that equals cutter 8 on the value, crank 9 whenever circles, cutter 8 reciprocal two strokes can guarantee the operate as normal of cutter.Wherein handle of a knife 50 is riveted on the knife bar 49 as a part, and the active length of chute equals the twice of cutter 8 strokes, and width is more bigger than roller diameter, does not interfere with stuck during with the motion of assurance roller.Handle of a knife 50 is contained on the finger beam 13 with knife bar 49, can slide along finger beam 13.
As shown in Figure 4; Drive wheel assemblies 26 comprises wheel drive motor 41, rubbercushioned sleeve bearing coupling 42, driving wheel 43, usher to seat bearing 44, interior rolling bearing units 45, support 46, axletree 47, driving-disc 48 outward; Wheel drive motor 41 is installed on the vehicle frame 24 through support 46; The output shaft of wheel drive motor 41 connects with rubbercushioned sleeve bearing coupling 42 usefulness flat keys; The output shaft of wheel drive motor 41 drives axletree 47 and driving-disc 48 through rubbercushioned sleeve bearing coupling 42, thereby drives driving wheel 43 rotations; Axletree 47 two ends are fixed on the vehicle frame 24 through the bearing 44 of usheing to seat outward, interior rolling bearing units 45.
As shown in Figure 5; Wheel drive motor hydraulic control system comprise stop to move magnetic valve 27, reversing flow speed control valve 28, turn to magnetic valve 29, choke valve 30, turn to overflow valve 31, braking safety valve 32, advance-astern maneuvering valve 33, flow divider 34, big flow flow speed control valve 35, low discharge flow speed control valve 36, gear shift control valve 37 and wheel drive motor 41; Gear shift control valve 37 is the 2/2-way magnetic valve; The inlet of gear shift control valve 37 connects working connection, and the outlet of gear shift control valve 37 connects big flow flow speed control valve 35; Low discharge flow speed control valve 36 is attempted by between the outlet of gear shift control valve 37 inlets and big flow flow speed control valve 35; Advance-astern maneuvering valve 33 is the 3-position 4-way solenoid directional control valve; The a interface of 3-position 4-way solenoid directional control valve meets the output interface a of flow divider 34; The b interface of 3-position 4-way solenoid directional control valve is connected with an end of the input that turns to overflow valve 31, an end that turns to magnetic valve 29 and choke valve 30; The c interface of 3-position 4-way solenoid directional control valve is connected the d interface connected tank 19 of 3-position 4-way solenoid directional control valve with an end of braking safety valve 32, wheel drive motor 41 with the end that moves magnetic valve 27 that stops; Turn to the end of the other end order of magnetic valve 29, turn to the other end of flow speed control valve 29 to be connected with the other end that moves magnetic valve 27 that stops with the other end of wheel drive motor 41 to flow speed control valve 28.Wherein flow divider 34 output interface a and delivery outlet b connect the left and right wheels oil circuit respectively, and the left and right wheels oil circuit is identical.
During the energising of electromagnetism iron, gear shift control valve 37 is in position, a left side, and hydraulic oil flows to flow divider 34 through low discharge flow speed control valve 36, and the wheel drive motor obtains low discharge, is in low cruise; Otherwise hydraulic oil flows to flow divider 34 through big flow flow speed control valve 35, and wheel drive motor 41 obtains big flow, is in quick operation.
The effect of flow divider 34 is to keep the both sides wheel to obtain same traffic, keeps synchronously.When left and right electromagnet all cut off the power supply, wheel drive motor 41 can not get hydraulic oil, is in dead ship condition; When energising of left electromagnet and the outage of right electromagnetism iron, swather is in forward travel state, and its output fluid directly is sent to and turns to magnetic valve 29, the oil return of wheel drive motor 41 through advancing-astern maneuvering valve 33 gets back to fuel tank 19; When outage of left electromagnet and the energising of right electromagnetism iron, spool is in right position, the 41 right side oil-feeds of wheel drive motor, pass on left advance-astern maneuvering valve 33 oil returns are to fuel tank 19, swather is in the reversing state.
Turn to magnetic valve 29 to be the 2/2-way magnetic valve, when the electromagnetism iron cut off the power supply, choke valve 30 was inoperative, and swather is in the straight ahead state; When the electromagnetism iron was switched on, hydraulic oil flow was through choke valve 30, and flow reduces, and vehicle wheel rotational speed also reduces, and the magnetic valve 29 that turns in the opposite side wheel oil circuit is in inverse state at this moment, can make the both sides vehicle wheel rotational speed different, thereby realizes turning to.
Unidirectional flow speed control valve 28 is an one-way flow control valve, and when hydraulic oil when oil circuit gets into the wheel drive motor from the left side, wheel is in forward travel state, and unidirectional flow speed control valve 28 does not play throttling action; When hydraulic oil when oil circuit gets into the wheel drive motor from the right side, wheel is in the reversing state, and the check valve in the unidirectional flow speed control valve 28 is in cut-off state, and flow speed control valve wherein reduces the fluid flow of the wheel drive motor of flowing through, and reduces back-up speed.
As shown in Figure 6; The taiwan cut off and landing hydraulic control system comprises taiwan cut off and landing oil cylinder 38, taiwan cut off and landing control valve 39 and taiwan cut off and landing speed control valve 40; Taiwan cut off and landing speed control valve 40 inputs are connected on the hydraulic system working connection; The a interface of taiwan cut off and landing speed control valve 40 output termination taiwan cut off and landing control valves 39; The b interface of taiwan cut off and landing control valve 39 is connected with an end of taiwan cut off and landing oil cylinder 38, and the c interface of taiwan cut off and landing control valve is connected with the other end of taiwan cut off and landing oil cylinder 38, the d interface connected tank 19 of taiwan cut off and landing control valve 39.
Taiwan cut off and landing speed control valve 40 is a choke valve, is used for regulating the hydraulic fluid flow rate that gets into the taiwan cut off and landing oil cylinder, thus the speed that the speed that control taiwan cut off and landing oil cylinder rises and the ceding of Taiwan are risen.The taiwan cut off and landing control valve is the 3-position 4-way solenoid directional control valve, and when the electromagnetism iron of both sides all cut off the power supply, taiwan cut off and landing oil cylinder oil inlet and oil return road was in off state, and this moment, oil cylinder stayed cool, and the ceding of Taiwan highly remains unchanged; When taiwan cut off and landing control valve right side electromagnetism iron was switched on, fluid got into the taiwan cut off and landing right cavity of cylinder through the taiwan cut off and landing control valve, and chamber, a taiwan cut off and landing oil cylinder left side is through lift controil valve left side chamber oil return, and ceding of Taiwan this moment is in propradation under the promotion of oil cylinder piston; When the electromagnetism iron energising of taiwan cut off and landing control valve left side, taiwan cut off and landing oil cylinder two chambeies are by UNICOM, and fluid is got back to fuel tank through the taiwan cut off and landing control valve, and descend together with the piston of taiwan cut off and landing oil cylinder this moment under ceding of Taiwan deadweight effect, and the ceding of Taiwan highly reduces.
Claims (1)
1. small-sized all-hydraulic self-propelled swather; Comprise nearside divider, drive pulley, driven pulley, belt conveyor, CD-ROM drive motor, shaft coupling, ceding of Taiwan skeleton, crank mechanism, taiwan cut off and landing hydraulic control system, sleeve, guide rail, oil pump, oil pump drive unit, fuel tank, Hydraulic Station, engine, control panel, handrail, vehicle frame, universal guide wheel and drive wheel assemblies; It is characterized in that: nearside divider is installed on the ceding of Taiwan skeleton; CD-ROM drive motor drives drive pulley and crank through shaft coupling; Drive pulley drives driven pulley through belt conveyor; Crank drives cutter and does linear reciprocating motion, and crop is cut off, and by belt conveyor it is transported to the ceding of Taiwan left side; Ceding of Taiwan skeleton is connected with an end of elevating ram; The other end of elevating ram is installed on the vehicle frame; Ceding of Taiwan skeleton end is provided with sleeve, establishes two upright guide rails on the vehicle frame, and the end of ceding of Taiwan skeleton is installed on the guide rail through sleeve; Under the effect of elevating ram, ceding of Taiwan skeleton is moved up and down along guide rail; Vehicle frame is supported by a universal guide wheel and two driving wheels, is bikini and arranges that engine is loaded on right side, vehicle frame rear end, drives oil pump through the oil pump drive unit; Wheel drive motor hydraulic control system is contained on the vehicle frame, makes Hydraulic Station, places left side, vehicle frame rear portion; Fuel tank places the centre position at vehicle frame rear portion, and handrail is two steel cylindrical tube, is installed in the vehicle frame both sides respectively, and control panel is arranged between two handrails;
Crank mechanism comprises knife bar and handle of a knife, crank, driving pulley axle, Roller Shaft, roller and finger beam, and the drive pulley axle links through flat key and crank; Roller links through Roller Shaft and crank; Driving pulley axle and Roller Shaft center line apart from the stroke that equals cutter on the value; Wherein handle of a knife is riveted on the knife bar as a part; The active length of chute equals the twice of knife stroke; Width is more bigger than roller diameter, and handle of a knife and knife bar are contained on the finger beam, can slide along finger beam;
Drive wheel assemblies comprises wheel drive motor, rubbercushioned sleeve bearing coupling, driving wheel, usher to seat bearing, interior rolling bearing units, support, axletree, driving-disc outward; The wheel drive motor is installed on the vehicle frame through support; The output shaft of wheel drive motor connects with flat key with rubbercushioned sleeve bearing coupling; The output shaft of wheel drive motor drives axletree and driving-disc through rubbercushioned sleeve bearing coupling, thereby drives the driving wheel rotation; The axletree two ends are fixed on the vehicle frame through the bearing of usheing to seat outward, interior rolling bearing units;
Wheel drive motor hydraulic control system comprise stop to move magnetic valve, the flow speed control valve of moveing backward, turn to magnetic valve, choke valve, turn to overflow valve, braking safety valve, advance-astern maneuvering valve, flow divider, big flow flow speed control valve, low discharge flow speed control valve, gear shift control valve and wheel drive motor; The gear shift control valve is the 2/2-way magnetic valve; The inlet of gear shift control valve connects working connection, and the outlet of gear shift control valve connects big flow flow speed control valve; The low discharge flow speed control valve is attempted by between the outlet of gear shift control valve inlet and big flow flow speed control valve; Advance-astern maneuvering valve is the 3-position 4-way solenoid directional control valve; The a interface of 3-position 4-way solenoid directional control valve meets the output interface a of flow divider; The b interface of 3-position 4-way solenoid directional control valve is connected with an end of the input that turns to overflow valve, an end that turns to magnetic valve and choke valve; The c interface of 3-position 4-way solenoid directional control valve is connected the d interface connected tank of 3-position 4-way solenoid directional control valve with an end of braking safety valve, wheel drive motor with the end that moves magnetic valve that stops; Turn to the end of the other end order of magnetic valve to flow speed control valve; Turn to the other end of flow speed control valve to be connected with the other end that moves magnetic valve that stops with the other end of wheel drive motor; Wherein flow divider output interface a and delivery outlet b connect the left and right wheels oil circuit respectively, and the left and right wheels oil circuit is identical;
The taiwan cut off and landing hydraulic control system comprises taiwan cut off and landing oil cylinder, taiwan cut off and landing control valve and taiwan cut off and landing speed control valve; Taiwan cut off and landing speed control valve input is connected on the hydraulic system working connection; The a interface of taiwan cut off and landing speed control valve output termination taiwan cut off and landing control valve; The b interface of taiwan cut off and landing control valve is connected with an end of taiwan cut off and landing oil cylinder, and the c interface of taiwan cut off and landing control valve is connected with the other end of taiwan cut off and landing oil cylinder, the d interface connected tank of taiwan cut off and landing control valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104367340A CN102511238B (en) | 2011-12-23 | 2011-12-23 | Small-sized full-hydraulic self-propelled windrower |
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| CN2011104367340A CN102511238B (en) | 2011-12-23 | 2011-12-23 | Small-sized full-hydraulic self-propelled windrower |
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| CN102511238A true CN102511238A (en) | 2012-06-27 |
| CN102511238B CN102511238B (en) | 2013-11-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103229629A (en) * | 2013-04-28 | 2013-08-07 | 吉林大学 | Corn harvesting machine cylindrical slide with vertical lifting function |
| CN108391648A (en) * | 2018-05-02 | 2018-08-14 | 河北康稼园植保科技有限公司 | A kind of machine pick cotton special efficient spraying machine |
| CN108547810A (en) * | 2018-07-19 | 2018-09-18 | 常州常发农业装备工程技术研究有限公司 | A kind of hydraulic control system of energy-efficient grain combine |
| CN108930679A (en) * | 2017-05-27 | 2018-12-04 | 江苏沃得农业机械有限公司 | A kind of synchronous valve turned to for controlling harvester with taiwan cut off and landing |
| USD863367S1 (en) | 2015-07-08 | 2019-10-15 | The Royal Institution For The Advancement Of Learning/Mcgill University | Steering wheel adapter for agricultural vehicle vision guidance system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10104827B2 (en) | 2015-07-08 | 2018-10-23 | The Royal Institution For The Advancement Of Learning/Mcgill University | Guidance system and steering control device for an agricultural vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103229629A (en) * | 2013-04-28 | 2013-08-07 | 吉林大学 | Corn harvesting machine cylindrical slide with vertical lifting function |
| USD863367S1 (en) | 2015-07-08 | 2019-10-15 | The Royal Institution For The Advancement Of Learning/Mcgill University | Steering wheel adapter for agricultural vehicle vision guidance system |
| CN108930679A (en) * | 2017-05-27 | 2018-12-04 | 江苏沃得农业机械有限公司 | A kind of synchronous valve turned to for controlling harvester with taiwan cut off and landing |
| CN108391648A (en) * | 2018-05-02 | 2018-08-14 | 河北康稼园植保科技有限公司 | A kind of machine pick cotton special efficient spraying machine |
| CN108547810A (en) * | 2018-07-19 | 2018-09-18 | 常州常发农业装备工程技术研究有限公司 | A kind of hydraulic control system of energy-efficient grain combine |
| CN108547810B (en) * | 2018-07-19 | 2024-03-01 | 常州常发农业装备工程技术研究有限公司 | Hydraulic control system of energy-saving grain combine harvester |
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| Publication number | Publication date |
|---|---|
| CN102511238B (en) | 2013-11-13 |
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