CN203537892U - Traveling stepless speed change device of corn combined harvester - Google Patents
Traveling stepless speed change device of corn combined harvester Download PDFInfo
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- CN203537892U CN203537892U CN201320630230.7U CN201320630230U CN203537892U CN 203537892 U CN203537892 U CN 203537892U CN 201320630230 U CN201320630230 U CN 201320630230U CN 203537892 U CN203537892 U CN 203537892U
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- speed change
- motor
- variable pump
- gearbox
- stepless speed
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- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 17
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 17
- 235000005822 corn Nutrition 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 230000007935 neutral effect Effects 0.000 claims description 13
- 230000011218 segmentation Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 238000003306 harvesting Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract 1
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of speed change mechanical equipment, in particular to a traveling stepless speed change device of a corn combined harvester. An engine is connected with a multiaxial speed increase box; the output end of the speed increase box is connected with an axial plunger variable pump; the variable pump is connected with and drives a motor; the motor drives an input shaft of a mechanical speed change box; multiple stages of speed change gear positions, a differential device, a tail end transmission device and a brake are arranged on the mechanical speed change box; the flow of the variable pump is controlled through a handle with a friction sheet and a steel ball; the handle on the variable pump is operated to control clockwise rotation and anticlockwise rotation of the motor, control the motor to stop rotating and control the rotating speeds of the clockwise rotation and anticlockwise rotation of the motor. The traveling stepless speed change device of the corn combined harvester has the advantages of convenience in speed change operation and large speed adjustment range and can meet a requirement on corn harvesting work and combine static hydraulic transmission with the mechanical speed change box.
Description
Technical field
The utility model relates to the technical field of agricultural machinery, especially relates to corn combine walking stepless speed change device.
Background technology
The plant equipment of variable-ratio has application very widely in agricultural, gardening.Lawn machine of using as grain combine, gardens etc.The manual many grades of mechanical gear boxes that traditional speed change gear is more complicated at present.During this gearbox speed change, need clutch separation, cut off engine input gearbox power, could realize gearshift.Cause so the temporary transient interruption of engine power stream, reduce operating efficiency; Manual many grades of mechanical gear boxes are for meeting agriculture requirement, a lot of gears have been designed, the speed of travel that each gear is corresponding different, adjacent two grades of speeds of travel are poor less, and during gearshift, vehicle to run is just more steady, will make like this gearbox-gear many, gearbox size is larger, gear too much makes to handle complicated, and manufacturing cost is high, operates this gearbox working strength large; For this class agricultural machinery speed of travel of combine and feeding speed, there is strict proportionate relationship, crop cropper feeding speed for different plot, different cultivars, different geographical is different, so require the speed of travel to change continuously within the scope of agriculture requirement, and speed can also finely tune, the results quality that guarantee is good like this and high operating efficiency.Because each gear speed of manual many grades of mechanical gear boxes is discontinuous, this gearbox cannot obtain high results quality and operating efficiency for harvest machinery.Therefore, the domestic mode that adopts mechanical stepless transmission (similar with the CVT speed change of automobile) to combine with mechanical gear box at large-scale combine.This gear shift mode volume is larger, and high to part quality requirement, especially shift cam is easy to wear, and the driving-belt life-span is shorter, and reliability is not high; Slewing range is less, and speed regulation capacity is limited.External large-scale combined harvester extensively adopts the volume speed-modulating loop being comprised of axial variable plunger pump, quantitative axial piston motor and other Hydraulic Elements, in conjunction with two grades of gearboxes of machinery, can realize continuous, the stepless speed change in each gear section.Because hydraulicefficiency is reaching 75%～80% under scientific and technological level at present, after being combined with mechanical gear box, fixed displacement motor torque can be entered to an amplification, with small displacement motor, can drive larger load.Because mechanical gear box gear is few, transmission efficiency is high, simple in structure, after the speed of travel segmentation of agriculture requirement, while hanging up a certain gear of mechanical gear box during farm work, substantially need not handle gear lever, only need manipulated variable pump discharge joystick just can realize the continuous change in gear section.Advance, slow astern bar operation.This hydrostatic segmentation infinitely variable transmission abroad big-and-middle-sized combined harvester application is very extensive.The variable pump that external employing discharge capacity is large, pressure is higher, with another output direct connection of engine crankshaft.Even if engine speed is high, can not guarantee that variable pump absorbs abundant power yet.This connecting mode is simple, compact.But because the variable pump discharge capacity of selecting is large, pressure is high, and manufacturing cost is very high.If select discharge capacity less, during the not high variable pump of pressure, because high-power engine rotating speed is between 2200rpm/min～2300rpm/min, during with variable pump direct connection, cannot reach variable pump rated speed, the power that offers motor when variable pump absorbed power is not enough is just little, and traction power during walking is less, can not guarantee that tractive force normally brings into play.For this reason, design a three axle gearboxes, make another output direct connection of power shaft and engine crankshaft, output shaft end connects with variable pump, and output speed reaches 3000rpm/min, identical with variable pump rated speed.When variable pump rotating speed is high, output flow is large, even pump absorbed power is also larger during pump pressure low (21Mpa).Increase after a set of gearbox, resulting cost is also lower than adopting the variable pump cost of large discharge capacity, high pressure.This connecting mode is not changed engine structure, and cost increases limited, and transmission efficiency is high, good reliability.Because variable pump, motor do not integrate, can be connected with gearbox with gearbox respectively, transmission fluid pressure energy after connecting by oil pipe, flexible when complete machine is arranged.The universal product of pump, the optional production in enormous quantities of motor.Cost is low, easy to maintenance.The manufacturing cost that can reduce to greatest extent hydrostatic transmissions, improves its market competitiveness.Hydrostatic transmissions is combined with mechanical gear box and can be obtained good speed adjusting performance and higher transmission efficiency, and makes simple to operate.
Summary of the invention
The deficiency existing for above-mentioned manual many grades of mechanical gear boxes, the purpose of this utility model is to be to provide a kind of variable speed operation convenient, speed adjustable range is wide, can meet harvest corn operation, the corn combine walking stepless speed change device that hydrostatic transmissions is combined with mechanical gear box.
For realizing above-mentioned object, the utility model provides following technical scheme: a kind of corn combine walking stepless speed change device, and engine is connected with multiaxis gearbox, and gearbox output connects with shaft orientation plunger variable pump; Variable pump connects and has driven hydraulic motor, hydraulic motor connects with mechanical gear box power shaft, mechanical gear box is provided with the handle control variables pump discharge of variable pump with friction plate and steel ball described in multi-change speed gear, differential gear, end transmission device and brake, the forward by the handle controllable motor on performance variable pump, reverses, stops operating and the rotating speed of rotating.
The utility model is further set to: described motor driven gearbox makes variable pump reach rated speed, and variable pump is connected by oil pipe with fixed displacement motor.When on variable pump, flow joystick rotates forward from neutral position, the driving shaft (output shaft) of putting into gear on rear transmission gear box rotates forward, and now grain header is forward gear; When on variable pump, flow joystick rotates backward from neutral position, now grain header is the gear that falls back.On variable pump, flow joystick is when neutral position, and motor drive shaft does not rotate, and now grain header can not be walked.
The utility model is further set to: described gearbox is diaxon or three axles or four axle construction, adopts spur gear wheel or Helical gear Transmission between axle and axle, and adopts the mode of splashing or pressure mode to lubricate.Described gearbox power shaft two ends are spline or cylinder shaft extension.Described variable pump shaft extension connects with gearbox output shaft internal spline.
The utility model is further set to: described mechanical gear box has three or four kind of speed change gear.
The utility model is further set to: described mechanical gear box is to use by pushing-pulling flexible shaft or pull bar to carry out gear shift operation.
By adopting technique scheme, the technique effect that the utility model reaches is:
1, easy to use: while advancing, after mechanical gear box gear articulates, grain header speed of travel scope is determined, then variable pump flow-control handle is rotated forward by neutral position, grain header is forward travel state, and driving pump flow-control handle deflection angle is larger forward, and the speed of travel is faster; During by the neutral position of pump discharge joystick push-and-pull, grain header is for stopping walking states; Pump discharge joystick is rotated backward from neutral position, and grain header is the state of falling back; And the more throwback speed of deflection angle of driving pump flow-control handle is faster backward.For safety, during design pump discharge joystick backward deflection angle to strictly control.Do not allow the excessive velocities that falls back, to avoid danger.
2,, during grain header farm work, when reaching rated engine speed, engine locks hand throttle.Now, if in the time of need to switching mechanical gearbox-gear, variable pump flow-control handle can be threaded to low discharge position and can not interrupt power shifting; Under the slow-speed of revolution, switching machine tool gearbox gear is very convenient.This is the not available functions of manual many grades of mechanical gear boxes.
3, by multiaxis gearbox, variable pump, fixed displacement motor and mechanical gear box, formed hydrostatic transmission, made combine walking performance obtain good lifting, speed-regulating range width, simple to operate.
Accompanying drawing explanation
Fig. 1 is operation principle schematic diagram of the present utility model.
Specific embodiment
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail below.
As shown in Figure 1, for the disclosed a kind of corn combine walking stepless speed change device of the utility model, comprise engine 10 and gearbox 50, described engine 10 drives the elementary axle of gearbox 20, the output shaft of gearbox 20 drives variable pump 30 work, variable pump 30 CD-ROM drive motors 40 rotate, and motor 40 drives gearboxes 50 to rotate, and the forward by handle 301 controllable motor 40 on performance variable pump 30, reverse, stop operating and the rotating speed of rotating.
In the present embodiment, variable pump 30 has and just turns to output and counter steer output to communicate with motor 40 respectively.Described handle 301 is rotated backward and is controlled motor 40 reversions by neutral position, and starts to accelerate from zero velocity; Handle 301 is positioned at neutral position control motor 40 and stops operating; Handle 301 is rotated forward and is controlled motor 40 forwards by neutral position, and starts to accelerate from zero velocity, forms segmentation infinitely variable speeds.That is: in the time of need to advancing, only handle 301 need be rotated forward, can move ahead, before adjusting during line speed, the output liquid amount size that just turns to output that only needs control variables pump 30 is the rotating speed of controllable motor 40 and turns to clockwisely, and then controls the rotating speed of gearbox 50; While stopping, only need control lever 301 is neutral, variable pump 30 is output liquid amount no longer; While falling back, the output liquid amount size that only needs the counter steer input of control variables pump 30 is the rotating speed of controllable motor 40 and turns to reverse, and then controls the rotating speed of gearbox 50.Described motor 40 is hydraulic motor, can be also electro-motor.
In the present embodiment, the specified output speed of described engine 10 is 2300 revs/min, and the specified output speed of gearbox 20 is 3000 revs/min.Described gearbox 50 has following four kinds of speed change gears: one grade: 0-4km/h; Second gear: 0-7km/h; Third gear: 0-10km/h; Fourth gear: 0-20km/h.Described gearbox 50 drives gearbox 50 gearshifts by flexible axle or pull bar.Equally, described gearbox 50 also can be set up three kinds of speed change gears between 0-20km/h.
Above-described embodiment is only preferred embodiment of the present utility model, not limits according to this protection domain of the present utility model, therefore: all equivalences of doing according to structure of the present utility model, shape, principle change, within all should being covered by protection domain of the present utility model.
Claims (7)
1. corn combine walking stepless speed change device, engine is connected with multiaxis gearbox, it is characterized in that: described gearbox output connects with shaft orientation plunger variable pump, variable pump connects and CD-ROM drive motor, motor-driven machine tool gearbox power shaft, mechanical gear box is provided with multi-change speed gear, differential gear, end transmission device and brake, the handle control variables pump discharge of described variable pump with friction plate and steel ball, the forward by the handle controllable motor on performance variable pump, reverses, stops operating and the rotating speed of rotating.
2. corn combine walking stepless speed change device according to claim 1, is characterized in that: described motor is hydraulic motor.
3. corn combine according to claim 1 walking stepless speed change device, it is characterized in that: described gearbox is diaxon or three axles or four axle construction, between axle and axle, adopt spur gear wheel or Helical gear Transmission, and adopt the mode of splashing or pressure mode to lubricate.
4. corn combine walking stepless speed change device according to claim 3, is characterized in that: described gearbox power shaft two ends are spline or cylinder shaft extension, and described variable pump shaft extension connects with gearbox output shaft internal spline.
5. corn combine walking stepless speed change device according to claim 1, is characterized in that: described mechanical gear box has three kinds or four kinds of speed change gears.
6. according to the corn combine walking stepless speed change device described in claim 1-5 any one, it is characterized in that: described control lever is rotated backward and controlled motor and reverse by neutral position, and starts to accelerate from zero velocity; Control lever is positioned at neutral position control motor and stops operating; Control lever is rotated forward and is controlled motor forward by neutral position, and starts to accelerate from zero velocity, forms segmentation infinitely variable speeds.
7. according to the corn combine walking stepless speed change device described in claim 1-5 any one, it is characterized in that: described gearbox drives gearbox shifting by pushing-pulling flexible shaft or pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630230.7U CN203537892U (en) | 2013-10-12 | 2013-10-12 | Traveling stepless speed change device of corn combined harvester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630230.7U CN203537892U (en) | 2013-10-12 | 2013-10-12 | Traveling stepless speed change device of corn combined harvester |
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| CN203537892U true CN203537892U (en) | 2014-04-16 |
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| CN201320630230.7U Expired - Lifetime CN203537892U (en) | 2013-10-12 | 2013-10-12 | Traveling stepless speed change device of corn combined harvester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196706A (en) * | 2014-07-31 | 2014-12-10 | 安徽佳乐建设机械有限公司 | Variable pump control device for driving of off-road traveling chassis |
| CN105917841A (en) * | 2016-06-13 | 2016-09-07 | 常州格力博有限公司 | Mower |
| WO2020140486A1 (en) * | 2019-01-04 | 2020-07-09 | 丰疆智能科技股份有限公司 | Rice transplanter, and automatic shifting device and control method therefor |
| CN113099835A (en) * | 2021-05-19 | 2021-07-13 | 山东巨明机械有限公司 | Non-row self-propelled corn harvester |
-
2013
- 2013-10-12 CN CN201320630230.7U patent/CN203537892U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196706A (en) * | 2014-07-31 | 2014-12-10 | 安徽佳乐建设机械有限公司 | Variable pump control device for driving of off-road traveling chassis |
| CN105917841A (en) * | 2016-06-13 | 2016-09-07 | 常州格力博有限公司 | Mower |
| CN105917841B (en) * | 2016-06-13 | 2018-07-20 | 常州格力博有限公司 | Grass trimmer |
| WO2020140486A1 (en) * | 2019-01-04 | 2020-07-09 | 丰疆智能科技股份有限公司 | Rice transplanter, and automatic shifting device and control method therefor |
| CN113099835A (en) * | 2021-05-19 | 2021-07-13 | 山东巨明机械有限公司 | Non-row self-propelled corn harvester |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |