CN105202176A - Gearshift mechanism of harvesting machine, gearshift control system and harvesting machine with gearshift mechanism - Google Patents
Gearshift mechanism of harvesting machine, gearshift control system and harvesting machine with gearshift mechanism Download PDFInfo
- Publication number
- CN105202176A CN105202176A CN201510676748.8A CN201510676748A CN105202176A CN 105202176 A CN105202176 A CN 105202176A CN 201510676748 A CN201510676748 A CN 201510676748A CN 105202176 A CN105202176 A CN 105202176A
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- China
- Prior art keywords
- controller
- electric pushrod
- gearshift mechanism
- gearshift
- shift
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2306/00—Shifting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a gearshift mechanism of a harvesting machine, a gearshift control system and a harvesting machine with the gearshift mechanism. The gearshift mechanism is provided with a shift lever (2), a driving component and a connecting rod (3), wherein the nearby part of the middle part of the shift lever (2) is rotatablely sheathed on the shaft of a machine body; the driving component is controlled by a controller; the end of the driving component is hinged with a first end of the shift lever (2); a first end of the connecting rod (3) is hinged with a second end of the shift lever (2); and a second end of the connecting rod (3) is connected with a transmission case gearshift point of the machine body. The driving component drives one end of the shift lever (2), so that the shift lever (2) rotates around the shaft, the other end of the shift lever (2) drives the connecting rod (3) to move, and the connecting rod (3) is connected with the transmission case gearshift point, thereby changing the position of the transmission case gearshift point and achieving the goal of gearshift. The motion of the driving component is controlled to implement gearshift, and the driving component is automatically controlled by the controller, so that the gearshift is convenient, reliable and intelligent, thereby lowering the driving fatigue.
Description
Technical field
The invention belongs to agricultural machinery technological field, particularly relate to the gearshift mechanism of harvest machinery and shift control thereof and there is its harvest machinery.
Background technique
Hydraulically powered harvest machinery is adopted to have noise low, can the advantage such as electrodeless variable-speed, be more and more subject to liking of user.Gear changing mode for the gearbox of this vehicle still adopts traditional bracing wire or mechanical structure to control.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem: be oil hydraulic motor due to what provide power to gearbox, the power of motor is provided by oil hydraulic pump, when gear shift, pump will be first allowed to be in meta (namely cutting off motor power), then could gear shift manually.Gear shift is loaded down with trivial details, operation inconvenience.
Summary of the invention
It is convenient, reliable, intelligent that technical problem to be solved by this invention is to provide a kind of gear shift, reduces the gearshift mechanism of harvest machinery of driving fatigue and shift control thereof and have its harvest machinery.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of gearshift mechanism of harvest machinery, has:
Driving lever, described driving lever is sleeved on the axle on body rotationally;
Driver part, the first end of described driver part end and driving lever is hinged; Described driver part is controlled by controller;
Connecting rod, the first end of described connecting rod and the second end of described driving lever hinged, the second end of described connecting rod is connected with the gearbox gear-shift point of described body.
Described driver part comprises push rod, and the first end of described push rod end and described driving lever is hinged.
Described driving lever comprises sleeve pipe, and described sleeve pipe is rotatably sleeved on the axle on body; Described sleeve pipe two ends are respectively provided with a wiper arm, one of them wiper arm and described push rod hinged, the first end of another wiper arm and described connecting rod is hinged.
Described sleeve pipe is tubular, and described wiper arm is strip, the vertical described sleeve pipe of described wiper arm.
The length of two described wiper arms is respectively m and n, and described m and n value can carry out accommodation according to gear shift Driving force.
Angle between two described wiper arms is h, and the length of described sleeve pipe is k, adjusts described h and k value and can avoid interfering with housing construction.
Described push rod is electric pushrod.
The stroke of described electric pushrod has X1, X2 and X3 tri-from small to large, distinguishes the low grade of corresponding gearbox, neutral and top grade.
A shift control for the gearshift mechanism of above-mentioned harvest machinery, has:
Brake valve, described brake valve controls the opening and closing of the pump providing power for the motor be connected with gearbox;
Controller, described controller receives shift signal, and controls the motion of described electric pushrod and described brake valve according to described shift signal; Described controller also detects the length feedback signal of described electric pushrod.
Controlling method is as follows:
1) controller receives shift signal;
2) described controller controls described brake valve according to described shift signal and closes pump, cuts off gearbox dynamic;
3) described pump cuts out rear described controller output signal to described electric pushrod, causes it to move to assigned position;
4) described controller detects the length feedback signal of described electric pushrod, after the length of described electric pushrod reaches requirement, described controller controls described electric pushrod stop motion, cancels to the signal of described brake valve simultaneously, normally provides power to gearbox.
It is s second that electric pushrod 1 moves to high-grade actuation time from low grade, then the time lag pressed the button for twice is greater than s second, otherwise controller does not perform the order of second time button.
A kind of harvest machinery, the shift control of the gearshift mechanism of above-mentioned harvest machinery.
A technological scheme tool in technique scheme has the following advantages or beneficial effect, at mechanical gear box shift point, cancel the structures such as original conventional gear shifting handle and shift bracing wire, use the power source that electric pushrod is actuator instead, shift command is accepted with controller, gear shift is convenient, reliable, intelligent, reduces driving fatigue.
Accompanying drawing explanation
Fig. 1 is the gearshift mechanism of harvest machinery that provides in the embodiment of the present invention and the structural representation of shift control thereof;
Fig. 2 is the structural representation of the driving lever of Fig. 1;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the structural representation of the gearshift mechanism of Fig. 1;
Fig. 5 is the partial enlarged drawing of Fig. 4;
Fig. 6 is the gear schematic diagram of speed changer;
Fig. 7 is the structural representation of the electric pushrod of Fig. 1;
Fig. 8 is gear schematic diagram;
Mark in above-mentioned figure is: 1, electric pushrod, and 2, driving lever, 21, sleeve pipe, 22, wiper arm, 3, connecting rod.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
See Fig. 1, a kind of gearshift mechanism of harvest machinery, has:
Driving lever 2, driver part and connecting rod 3, driving lever 2 near middle is sleeved on the axle on body rotationally; The first end of driver part end and driving lever 2 is hinged; The first end of connecting rod 3 and the second end of driving lever 2 hinged, the second end of connecting rod 3 is connected with the gearbox gear-shift point of body.Driver part is controlled by controller, promotes driving lever 2 one end, driving lever 2 is swayed by driver part, and driving lever 2 the other end drives connecting rod 3 to move, and connecting rod 3 is connected with gearbox gear-shift point, thus changes gearbox gear-shift point position, realizes gear shift object.Realize gear shift by the motion controlling driver part, driver part adopts controller automatically to control, and gear shift is convenient, reliable, intelligent, reduces driving fatigue.
Driver part comprises push rod, and the first end of push rod end and driving lever 2 is hinged.Also other types driver part in prior art can be adopted.
As shown in Figures 2 and 3, driving lever 2 comprises sleeve pipe 21, and sleeve pipe 21 is rotatably sleeved on the axle on body; Sleeve pipe 21 two ends are respectively provided with a wiper arm 22, and one of them wiper arm 22 is hinged with push rod, and another wiper arm 22 is hinged with the first end of connecting rod 3.
Sleeve pipe 21 is tubular, and wiper arm 22 is strip, wiper arm 22 vertical pipes 21.As shown in Figures 2 and 3, by adjusting length m and the n of two wiper arms 22, gear shift Driving force can be increased.The angle h of two wiper arms 22 and sleeve pipe 21 length k suitably according to the adjustment of vehicle installation requirements, can avoid and other constructive interferences.
Push rod is electric pushrod 1.Also can adopt other types push rod, as pneumatic or hydraulic push rod, also adopt Electric control simultaneously.
Electric pushrod 1 can stretch out or regain, and can send flexible length signals out.The Driving force, collapsing length etc. of this electric pushrod 1 need Lectotype and calculation as required.Driving lever 2 is a power transmission and sense of rotation regulating mechanism.Connecting rod 3 is the mechanism connecting driving lever 2 and gearbox gear-shift point, similar axial driving universal joint structure.
As shown in Figure 6 and Figure 7, electric pushrod 1 has three strokes, distinguishes the low grade of corresponding gearbox, neutral and top grade.As shown in Figure 6, this model push rod stroke is X3-X1mm to electric pushrod 1.First demarcate at neutral position, when system is in neutral gear, the B place namely in Fig. 7, now stroke is X2.When push rod position is at C place, now stroke is X3, and now gearbox is high gear.When push rod position is at A place, now stroke is X1, and now gearbox is low gear.
Connecting rod 3 is universal connection rod, and the rotation that can adapt to wiper arm 22 changes angle.
Gearshift mechanism course of action: as shown in Figure 5, the A place of electric pushrod 1 is fixing, and the Placement that B, C are 2 is the same, is hinged.Stretching of electric pushrod 1, drives B point to move up and down, and by driving lever 2, drives C point to move left and right.The shift point of gearbox is triggered through universal connection rod.
Embodiment two
The present embodiment is the further improvement made on the basis of embodiment one, and the part identical with embodiment one with reference to embodiment one, can not repeat them here.
Power inputs
As shown in Figure 1, this system gearbox used is two grades of conventional gearboxes, and driving mode is hydraulic driving, and left side is a pump one motor driving mode.A brake pump, this brake pump is a solenoid valve, and switch is controlled by controller.This valve under normal conditions (closed condition) pump normally exports, drive motor work.During the work of this valve, block the output of pump, motor runs out of steam.
Actuator
As shown in Figure 4, electric pushrod 1 can stretch out or regain, and can send flexible length signals out.The Driving force, collapsing length etc. of this electric pushrod 1 need Lectotype and calculation as required.Driving lever 2 is a power transmission and sense of rotation regulating mechanism.Connecting rod 3 is the mechanism connecting driving lever 2 and gearbox gear-shift point, similar axial driving universal joint structure.
Control system
A shift control for the gearshift mechanism of above-mentioned harvest machinery, has:
Brake valve, brake valve controls the opening and closing of the pump providing power for the motor be connected with gearbox;
Controller, controller receives shift signal, and controls motion and the brake valve of electric pushrod 1 according to shift signal; Controller also detects the length feedback signal of electric pushrod 1.
Controlling method is as follows:
1) send shift signal, controller receives shift signal;
2) controller controls brake valve according to shift signal and closes pump, cuts off gearbox dynamic;
3) pump cuts out rear controller output signal to electric pushrod 1, causes it to move to assigned position;
4) controller detects the length feedback signal of electric pushrod 1, and after the length of electric pushrod 1 reaches requirement, controller controls electric pushrod 1 stop motion, cancels to the signal of brake valve simultaneously, normally provides power to gearbox.
Harvest machinery is not when starting, if controller receives shift signal, then controller does not export the motion and braking valve events that control electric pushrod.
The stroke of electric pushrod 1 has X1, X2 and X3 tri-from small to large, respectively corresponding gearbox low grade, neutral and top grade.Demarcate at neutral position, when system is in neutral gear, the B place namely in Fig. 7, now stroke is X2.When push rod position is at C place, now stroke is X3, and now gearbox is high gear.When push rod position is at A place, now stroke is X1, and now gearbox is low gear.Electric pushrod 1 from A position to the actuation time of C position be s second, then the time lag pressed the button for twice is greater than s second.Otherwise controller does not perform the order of second time button.
Receive shift signal, the current collapsing length of electric pushrod 1 and other signal of system etc. by controller, output signal after Logic judgment, be used for controlling the controls such as whether brake valve whether action, electric pushrod 1 be flexible, collapsing length.
Concrete gearshift procedure:
Fig. 8 represents gear schematic diagram, can be selector switch or other forms, is placed on handle or the first-class position being easy to operate of operation panel.1 represents bottom gear, and 2 represent top gear, and N represents neutral gear.
1, neutral position is to 1 gear shift process:
After vehicle launch, press 1 grade (bottom gear), controller outputs signal to brake valve on the one hand, cuts off gearbox dynamic, outputs signal to electric pushrod 1 on the other hand, allows it shrink.This Time Controller detects the length feedback signal that electric pushrod 1 sends, when length push rod being detected is X1.Controller sends instruction, allows electric pushrod 1 quit work, cancels to the signal of brake valve simultaneously, normally provide power to gearbox.Complete gear position operation;
2, neutral gear is to 2 gear shift processes:
After vehicle launch, press 2 grades (high gear), controller outputs signal to brake valve on the one hand, cuts off gearbox dynamic, outputs signal to electric pushrod 1 on the other hand, allows it stretch out.This Time Controller detects the length feedback signal that electric pushrod 1 sends, when length push rod being detected is X3.Controller sends instruction, allows electric pushrod 1 quit work, cancels to the signal of brake valve simultaneously, normally provide power to gearbox.Complete gear position operation;
3,1 grade to 2 gear shift processes (2 grades to 1 gear shift process):
When gear is in 1 gear, if press gear 2 button.Controller outputs signal to brake valve on the one hand, cuts off gearbox dynamic, outputs signal to electric pushrod 1 on the other hand, allows it stretch out.This Time Controller detects the length feedback signal that electric pushrod 1 sends, when length push rod being detected is X3.Controller sends instruction, allows electric pushrod 1 quit work, cancels to the signal of brake valve simultaneously, normally provide power to gearbox.Complete gear position operation 2 grades to 1 grade in like manner;
4,1 grade or 2 grades is arrived neutral gear gearshift procedure:
When gear is in 1 gear, if press gear N button (neutral gear).Controller outputs signal to brake valve on the one hand, cuts off gearbox dynamic, outputs signal to electric pushrod 1 on the other hand, allows it stretch out.This Time Controller detects the length feedback signal that electric pushrod 1 sends, when length push rod being detected is X2.Controller sends instruction, allows electric pushrod 1 quit work, cancels to the signal of brake valve simultaneously, normally provide power to gearbox.Complete gear position operation (2 grades to N shelves in like manner).
At mechanical gear box shift point, cancel the structures such as original conventional gear shifting handle and shift bracing wire, use the power source that electric pushrod 1 is actuator instead, accept shift command with controller, and according to system current state, judge whether to perform shift command.If current system conditions can perform shift command, then by sending instruction to electric pushrod 1, to reach the effect of gear shift.If current system conditions is not suitable for performing shift command, controller does not then perform this instruction, and what remind driver to send is false command.
After cancelling original mechanical gear shift, gear changing mode is electrical signal input mode, can be put on Joystick, also can be put on operation panel.Make gear shift more laborsaving, intelligent, easy to operate.Simultaneously owing to instead of traditional mechanical operating mechanism, be more conducive to cab section layout.
The application of controller, makes this system have more intellectuality, solves misoperation problem, protective system.Electric pushrod 1 is as gear shift power, more laborsaving, more convenient.
Embodiment three
A kind of harvest machinery, has the shift control of the gearshift mechanism of above-mentioned harvest machinery.Concrete structure can refer to embodiment one and embodiment two, does not repeat them here.The shift control of the gearshift mechanism of the harvest machinery in above-described embodiment is comprised, so it has all advantages of the shift control of the gearshift mechanism of above-mentioned harvest machinery due to harvest machinery of the present invention.
A technological scheme tool in technique scheme has the following advantages or beneficial effect, at mechanical gear box shift point, cancel the structures such as original conventional gear shifting handle and shift bracing wire, use the power source that electric pushrod 1 is actuator instead, shift command is accepted with controller, gear shift is convenient, reliable, intelligent, reduces driving fatigue.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technological scheme is carried out; or design of the present invention and technological scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (10)
1. a gearshift mechanism for harvest machinery, is characterized in that, has:
Driving lever (2), described driving lever (2) is sleeved on the axle on body rotationally;
Driver part, the first end of described driver part end and driving lever (2) is hinged; Described driver part is controlled by controller;
Connecting rod (3), the first end of described connecting rod (3) and the second end of described driving lever (2) hinged, the second end of described connecting rod (3) is connected with the gearbox gear-shift point of described body.
2. the gearshift mechanism of harvest machinery as claimed in claim 1, it is characterized in that, described driver part comprises push rod, and the first end of described push rod end and described driving lever (2) is hinged.
3. the gearshift mechanism of harvest machinery as claimed in claim 2, it is characterized in that, described driving lever (2) comprises sleeve pipe (21), and described sleeve pipe (21) is rotatably sleeved on the axle on described body; Described sleeve pipe (21) two ends are respectively provided with a wiper arm (22), and one of them wiper arm (22) is hinged with described push rod, and another wiper arm (22) is hinged with the first end of described connecting rod (3).
4. the gearshift mechanism of harvest machinery as claimed in claim 3, it is characterized in that, described sleeve pipe (21) is tubular, and described wiper arm (22) is strip, the vertical described sleeve pipe (21) of described wiper arm (22).
5. the gearshift mechanism of harvest machinery as claimed in claim 4, it is characterized in that, the length of two described wiper arms (22) is respectively m and n, and described m and n value can carry out accommodation according to gear shift Driving force.
6. the gearshift mechanism of harvest machinery as claimed in claim 4, it is characterized in that, the angle between two described wiper arms (22) is h, and the length of described sleeve pipe (21) is k, adjusts described h and k value and can avoid interfering with housing construction.
7. there is a shift control for the gearshift mechanism of the harvest machinery described in claim 7 or 8, it is characterized in that, have:
Brake valve, described brake valve controls the opening and closing of the pump providing power for the motor be connected with gearbox;
Controller, described controller receives shift signal, and controls the motion of described electric pushrod (1) and described brake valve according to described shift signal; Described controller also detects the length feedback signal of described electric pushrod (1).
8. the shift control of the gearshift mechanism of harvest machinery as claimed in claim 9, it is characterized in that, controlling method is as follows:
1) controller receives shift signal;
2) described controller controls described brake valve according to described shift signal and closes described pump, cuts off described gearbox dynamic;
3) described pump cuts out rear described controller output signal to described electric pushrod (1), causes it to move to assigned position;
4) described controller detects the length feedback signal of described electric pushrod (1), after the length of described electric pushrod (1) reaches requirement, described controller controls described electric pushrod (1) stop motion, cancel to the signal of described brake valve simultaneously, normally provide power to described gearbox.
9. the shift control of the gearshift mechanism of harvest machinery as claimed in claim 10, it is characterized in that, it is s second that electric pushrod (1) moves to high-grade actuation time from low grade, then the adjacent time lag pressed the button for twice is greater than s second, otherwise controller does not perform the order of second time button.
10. a harvest machinery, is characterized in that, have as arbitrary in claim 9-12 as described in the shift control of gearshift mechanism of harvest machinery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510676748.8A CN105202176A (en) | 2015-10-15 | 2015-10-15 | Gearshift mechanism of harvesting machine, gearshift control system and harvesting machine with gearshift mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510676748.8A CN105202176A (en) | 2015-10-15 | 2015-10-15 | Gearshift mechanism of harvesting machine, gearshift control system and harvesting machine with gearshift mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN105202176A true CN105202176A (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510676748.8A Pending CN105202176A (en) | 2015-10-15 | 2015-10-15 | Gearshift mechanism of harvesting machine, gearshift control system and harvesting machine with gearshift mechanism |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484655A (en) * | 1980-07-01 | 1984-11-27 | Sheppard Sr Darrel J | Gearless hydraulic transmission and vehicle drive system |
| CN2854218Y (en) * | 2005-12-12 | 2007-01-03 | 田书常 | Dynamic hydraulic driving device of loader |
| DE102007003956A1 (en) * | 2006-02-27 | 2007-11-08 | John Deere Forestry Oy | Hydrostatic transmission control, for a cross country agricultural/forestry machine, limits motor speed on slow driving to ensure maximum wheel traction |
| CN201373092Y (en) * | 2009-02-26 | 2009-12-30 | 图尔荪江·莫依丁 | Electric speed variator |
| CN202656864U (en) * | 2012-05-04 | 2013-01-09 | 杨飞 | Hydraulic driven vehicle |
| CN104141643A (en) * | 2013-05-10 | 2014-11-12 | 林德液压两合公司 | Drive system provided with hydrostatic drive mechanism for driving transmission |
| CN104691321A (en) * | 2014-09-24 | 2015-06-10 | 青岛科瑞特激光设备有限公司 | Two-gear hydraulic driving bridge assembly for large grain combine harvester |
| CN205118218U (en) * | 2015-10-15 | 2016-03-30 | 中联重机股份有限公司 | Harvest machinery's shifter and gear shift control system and have its harvest machinery thereof |
-
2015
- 2015-10-15 CN CN201510676748.8A patent/CN105202176A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4484655A (en) * | 1980-07-01 | 1984-11-27 | Sheppard Sr Darrel J | Gearless hydraulic transmission and vehicle drive system |
| CN2854218Y (en) * | 2005-12-12 | 2007-01-03 | 田书常 | Dynamic hydraulic driving device of loader |
| DE102007003956A1 (en) * | 2006-02-27 | 2007-11-08 | John Deere Forestry Oy | Hydrostatic transmission control, for a cross country agricultural/forestry machine, limits motor speed on slow driving to ensure maximum wheel traction |
| CN201373092Y (en) * | 2009-02-26 | 2009-12-30 | 图尔荪江·莫依丁 | Electric speed variator |
| CN202656864U (en) * | 2012-05-04 | 2013-01-09 | 杨飞 | Hydraulic driven vehicle |
| CN104141643A (en) * | 2013-05-10 | 2014-11-12 | 林德液压两合公司 | Drive system provided with hydrostatic drive mechanism for driving transmission |
| CN104691321A (en) * | 2014-09-24 | 2015-06-10 | 青岛科瑞特激光设备有限公司 | Two-gear hydraulic driving bridge assembly for large grain combine harvester |
| CN205118218U (en) * | 2015-10-15 | 2016-03-30 | 中联重机股份有限公司 | Harvest machinery's shifter and gear shift control system and have its harvest machinery thereof |
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Application publication date: 20151230 |