CN204217492U - Grain header two grades of four wheel drive hydraulic stepless speed change driving axis - Google Patents

Grain header two grades of four wheel drive hydraulic stepless speed change driving axis Download PDF

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Publication number
CN204217492U
CN204217492U CN201420624326.7U CN201420624326U CN204217492U CN 204217492 U CN204217492 U CN 204217492U CN 201420624326 U CN201420624326 U CN 201420624326U CN 204217492 U CN204217492 U CN 204217492U
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Prior art keywords
variable
speed change
grain header
axle
wheel drive
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CN201420624326.7U
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钱亮
罗振华
费海强
王军伟
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QINGDAO CREATION LASER EQUIPMENT CO Ltd
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QINGDAO CREATION LASER EQUIPMENT CO Ltd
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Abstract

The utility model relates to grain header two grades of four wheel drive hydraulic stepless speed change driving axis, back axle motor is variable hydraulic motor, described propons motor is constant displacement hydraulic motor, front axle differential is connected with running brake assembly, propons jackshaft is connected with mechanical speed change box assembly, the gearbox of mechanical speed change box assembly is provided with engaging sleeve, be connected with gearshift joystick, the conversion that engaging sleeve realizes gear is handled by gearshift joystick, hydraulic variable displacement pump is provided with variable controller, moves by the variable swing arm of variable pump the Variable Control realizing hydraulic variable displacement pump.Failure rate is low, simple to operate, volume is little, quality is light, and energy consumption is low, and this kind of mechanical four-wheel drive axle assembly can adapt to the operation of the serious landform of ponding and the stronger driving force of other needs.

Description

Grain header two grades of four wheel drive hydraulic stepless speed change driving axis
Technical field
The utility model patent relates to large-scale self-propelled grain cbmbine harvester driving axis technical field and hydrostatic technical field.
Background technology
In recent years, the large-scale self-propelled four wheel drive grain combine market demand was vigorous.This type of large-scale self-propelled grain cbmbine harvester supporting 1000 traditional series mechanical formula front driving axles and the mechanical rear-guard steeraxle of Power output is provided by front driving axle always.This mechanical type four-wheel drive axle assembly exists that fault rate is high, complicated operation, volume are large, quality weight, the high deficiency of energy consumption, and this kind of mechanical four-wheel drive axle assembly can not adapt to the operation of the serious landform of ponding and the stronger driving force of other needs, a kind of two grades of novel four wheel drive hydraulic stepless speed change driving axis of market in urgent need.
Summary of the invention
The utility model patent content mainly invents a kind of large-scale self-propelled grain cbmbine harvester two grades of four wheel drive hydraulic stepless speed change driving axis be made up of hydrostatic pressure system, propons mechanical drive system, rear-axle steering and mechanical drive system etc.
This device is based upon hydrostatic technology, electromechanical integration technology etc. and in recent years achievement in research basis was invented.
The utility model design grain header two grades of four wheel drive hydraulic stepless speed change driving axis, comprise the hydrostatic pressure system be connected with engine, propons mechanical drivetrain is unified rear-axle steering and mechanical drive system, hydrostatic pressure system comprises hydraulic variable displacement pump, propons fixed displacement motor and back axle variable displacement motor, fuel tank, oil is loose, propons is connected the power shaft of mechanical drive system respectively with the motor of back axle, pass through shaft coupling, jackshaft and differential mechanism, power is driven to front and back wheel respectively, described back axle variable displacement motor is automatically controlled variable hydraulic motor, described propons fixed displacement motor is constant displacement hydraulic motor, front axle differential is connected with running brake assembly, propons jackshaft is connected with mechanical speed change box assembly, the gearbox of mechanical speed change box assembly is provided with engaging sleeve, be connected with gearshift joystick, the conversion that engaging sleeve realizes gear is handled by gearshift joystick, hydraulic variable displacement pump is provided with variable controller, the Variable Control realizing hydraulic variable displacement pump is moved by the variable swing arm of variable pump.
Described gear is set to harvesting shelves and transition shelves two gears, is vacant shelves, moves locked after the transition shelves gear of described gearshift joystick in the middle of two gears.
Variable controller and gearshift control integrated being arranged on of executor and shift gears in joystick.
Described integrated be after being connected flexible axle by the variable swing arm of variable pump respectively with the gear level that mechanical gear box is arranged, integrated being arranged on realizes in gearshift joystick, by the mobile output of control variables pump simultaneously and the movement of gearbox engaging sleeve of gearshift joystick.
The flexible axle that the described gear level arranged with variable swing arm and the mechanical gear box of variable pump is connected respectively, forms 90 degree of angles.
Described back axle variable hydraulic motor is also connected with 4 wheel driven switch, exports in order to control rear axle power.
Described 4 wheel driven switch is also connected with anti-skid controller, and propons and back axle are respectively arranged with velocity sensor, and velocity sensor is connected with back axle variable hydraulic motor through anti-skid controller.
Described anti-skid controller, for receiving and compare the speed sensor signal that front-rear axle is arranged, and by controlling back axle variable hydraulic motor discharge capacity, realizes tire outside diameter linear velocity before and after grain header identical.
Also comprise the electronic control module be connected with running brake assembly and hydrostatic pressure system.
Variable hydraulic motor is connected with back axle power shaft by shaft coupling, through deceleration after by power transmission to bridge differential mechanism, differential output shaft and universal joint connection for transmission, rear wheel for harvester is driven to rotate through planetary reduction gear again, rear-axle steering oil cylinder and steering tie rod and bogie connection of rotating, realize grain header and turn to.
Adopt the grain header failure rate is low of the four wheel drive hydraulic stepless speed change driving axis of the utility model design, simple to operate, volume is little, quality is light, energy consumption is low, and this kind of mechanical four-wheel drive axle assembly can adapt to the operation of the serious landform of ponding and the stronger driving force of other needs.
Accompanying drawing explanation
Fig. 1 two grades of four wheel drive hydraulic stepless speed change driving axis transmission principle figure;
Fig. 2 four wheel drive hydraulic bridge assembly hydrostatic pressure system schematic diagram;
Fig. 3 hydraulic pump Variable Control and gearbox shifting control executor schematic diagram;
The gear of Fig. 4 driving axis and infinitely variable speeds control principle drawing;
In figure, 1-controls control crank, 2-ball pivot seat 3, gearbox shifting flexible axle, 4-variable pump variable flexible axle, 5-hub reduction gear output shaft, 6-differential side, 7-engaging sleeve, 8-power shaft, 9-back axle power shaft, 10-back axle jackshaft, 11-differential output shaft, 12-running brake assembly, 13-front axle differential assembly, 14-parking brake, 15-constant displacement hydraulic motor, 16-hydraulic variable displacement pump, the automatically controlled variable hydraulic motor of 17-, 18-rear axle differential, 19-universal joint, 20-rear-axle steering oil cylinder, 21-rear-axle steering pull bar, 22-propons velocity sensor, 23-back axle velocity sensor, 24-4 wheel driven switch, 25-electronic control module, the vacant shelves of 26-, 27-transition shelves, 28-gathers in shelves, 29-advance infinitely variable speeds district, 30-retreats infinitely variable speeds district, 31-anti-skid controller, 32-propons jackshaft.
Embodiment
The utility model patent refers to Fig. 1 primarily of hydraulic variable displacement pump 16() provide power to input, drive hydraulic pressure fixed displacement motor 15 speed-changing rotation, carry out the transition shelves of front axle assy by the gearshift engaging sleeve 7 of mechanical gear box and harvesting shelves two gears are selected, thus front driving axle assembly drives grain header to realize advancing, retreat and turn to and the action such as infinitely variable speeds.When grain header needs rear-driven steering bridge and propons parallel drive, automatically controlled variable hydraulic motor 17 is in maximum output displacement condition, and automatically controlled variable hydraulic motor 17 drives rear wheel for harvester to rotate by rear-guard steeraxle.When grain header does not need four wheel drive, can cut off rear bridge driven system, rear axle electronically controlled variable hydraulic motor 17 is in zero-displacement condition, does servo-actuated rotation.Supporting this kind of four wheel drive hydraulic stepless speed change driving axis of self-propelled large-scale grain combine can complete various walking operation.
The utility model patent is achieved through the following technical solutions (with reference to hydraulic ransaxle transmission principle Fig. 1):
High pressure liquid force feed, by the motor driven hydraulic variable displacement pump 16 of large-scale corn mowing machine, is delivered to constant displacement hydraulic motor 15 and automatically controlled variable hydraulic motor 17 through fluid pressure line by hydraulic-driven axle assembly.Constant displacement hydraulic motor 15 is connected with mechanical speed change box assembly power shaft 8 by shaft coupling.Mechanical gearbox can realize the conversion of harvesting two gears such as shelves, transition shelves by Artificial Control engaging sleeve 7 of shifting gears, and realizes mechanical speed change.Then Power output through propons jackshaft 32, front axle differential assembly 13 and running brake assembly 12, differential side 6, reach hub reduction gear and drive output shaft 6, drive grain header front-drive, propons is also provided with parking brake 14.When engaging sleeve 7 is in room, front driving axle assembly does not have Power output.When rear axle electronically controlled variable hydraulic motor 17 is automatically controlled be incorporated to system time, automatically controlled variable hydraulic motor 17 exports as maximum pump discharge, automatically controlled variable hydraulic motor 17 is connected with back axle power shaft 9 by shaft coupling, through double reduction to rear axle differential 18, then drive to universal joint 19 by differential output shaft 11, drive rear wheel for harvester to rotate finally by planetary reduction gear.When 20 action of rear-axle steering oil cylinder, back axle tire, by steering tie rod 21 connection of rotating, realizes grain header and turns to.By changing discharge capacity and the hydraulic oil outbound course of variable delivery hydraulic variable pump 16, infinitely variable speeds and the reverse driving of two driving axis can be realized.When back axle tyre slip, anti-skid controller 31 is by comparing the signal of propons velocity sensor 22 and rear bridge sensor, change rear axle electronically controlled automatically controlled variable hydraulic motor 17 discharge capacity, before and after ensureing grain header, tire outside diameter linear velocity is identical, realizes grain header four wheel drive.
Form hydrostatic pressure system by hydraulic variable displacement pump 16 and propons constant displacement hydraulic motor 15, automatically controlled variable hydraulic motor 17, fuel tank, oil are loose etc., its hydraulic principle as shown in Figure 2.Be fixed in grain header frame by loose to hydraulic pump, fuel tank, oil etc., hydraulic pump power shaft and engine output shaft are connected with belt and belt pulley, by Engine driven Hydraulic Pump High Rotation Speed, and output High-energy liquid force feed.
To be fixed on the front axle beam of large-scale corn mowing machine after the assemblings such as hydraulic pressure fixed displacement motor 15, mechanical gear box and hub reduction gear, constant displacement hydraulic motor 15 be connected by pressure duct with the hydraulic variable displacement pump 16 on grain header.
Be connected with large-scale corn mowing machine frame with rear axle assy assembling is rear by automatically controlled variable hydraulic motor 17, it is in parallel that rear axle electronically controlled variable displacement motor 17 and hydraulic variable displacement pump 16 pass through pressure duct, and hydrostatic pressure system schematic diagram refers to Fig. 2.
The shift control apparatus of driving axis, hydraulic variable displacement pump 16 regulation device, hydrostatic pressure system and water brake mutual-locking electric-controlled device and 4 wheel driven switch 24 and anti-slip control device are set in driving cab of harvester.
As shown in Figure 3, hydraulic pump variable controller and gearbox shifting are controlled executor (sharing) ball pivot seat 2 to be fixed in driver's cabin, and built-in control control crank 1(dual-purpose hydraulic variable displacement pump 16 controls and gearbox shifting controls) can rotate in ball pivot seat 2.The swing arm of hydraulic variable displacement pump 16 variable is connected with control control crank 1 one-tenth 90 degree with flexible axle 4 by flexible axle 3 with gearbox shifting bar.
Control control crank is placed on the vacant district shown in Fig. 4, pilots engine, hydraulic variable displacement pump 16 High Rotation Speed.Select drive axle gear according to job requirements, refer to Fig. 4.
When controlling control crank 1 to when left side is mobile shown in Fig. 4, front driving axle is chosen as harvesting shelves, now, change the position of joystick, traveling and the infinitely variable speeds in former and later two directions of grain header can be realized, when controlling control crank 1 and being in blank state, grain header stop motion.
When controlling control crank 1 to when right side is mobile shown in Fig. 4, front driving axle is chosen as transition shelves, and now, grain header can only forwards move.Change the position of joystick, grain header realizes infinitely variable speeds.When controlling control crank 1 and being in blank state, grain header stop motion.For the sake of security, grain header, when transition shelves are walked, moves locked after joystick, forbids that grain header retreats and travels.
In order to ensure safety during service brake, hydraulic driving brake system and hydrostatic pressure system carry out electric controlled interlocking.Embodiment refers to Fig. 1.
When hydraulic brake system works, the pressure signal that system produces feeds back to electronic control module, after electronic control module identification pressure signal simultaneously, convert the signal of telecommunication to, the electromagnetic valve work of hydraulic control variable pump 16, changes the output discharge capacity of hydraulic variable displacement pump 16, ensures that service brake safely, effectively.
When propons driving force is not enough, 4 wheel driven switch 24 can be opened back axle is driven simultaneously.Embodiment refers to Fig. 1.
4 wheel driven switch 24 is opened, and by anti-skid controller 31, control rear axle electronically controlled automatically controlled variable hydraulic motor 17 discharge capacity to maximum, rear-guard steeraxle produces Power output, and drive back axle tyre rotation, grain header realizes four wheel drive.
During in order to prevent road surface muddy, before and after grain header, tire linear velocity is inconsistent, and back axle tire produces and skids, and the utility model patent is provided with anti-skid controller 31.Embodiment refers to Fig. 1.
When back axle tyre slip, anti-skid controller 31 receives propons velocity sensor 22 and propons velocity sensor 23 signal, compare and judge now whether back axle tire skids, now can control the discharge capacity of rear axle electronically controlled variable hydraulic motor 17, ensure that the linear velocity of back axle tire outside diameter is identical with the linear velocity of front axle tyre external diameter, realize grain header four wheel drive.

Claims (10)

1. grain header two grades of four wheel drive hydraulic stepless speed change driving axis, comprise the hydrostatic pressure system be connected with engine, propons mechanical drivetrain is unified rear-axle steering and mechanical drive system, hydrostatic pressure system comprises hydraulic variable displacement pump, propons fixed displacement motor and back axle variable displacement motor, fuel tank, oil is loose, propons is connected the power shaft of mechanical drive system respectively with the motor of back axle, pass through shaft coupling, jackshaft and differential mechanism, power is driven to front and back wheel respectively, it is characterized in that: described back axle variable displacement motor is automatically controlled variable hydraulic motor, described propons fixed displacement motor is constant displacement hydraulic motor, front axle differential is connected with running brake assembly, propons jackshaft is connected with mechanical speed change box assembly, the gearbox of mechanical speed change box assembly is provided with engaging sleeve, be connected with gearshift joystick, the conversion that engaging sleeve realizes gear is handled by gearshift joystick, hydraulic variable displacement pump is provided with variable controller, the Variable Control realizing hydraulic variable displacement pump is moved by the variable swing arm of variable pump.
2. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 1, it is characterized in that: described gear is set to harvesting shelves and transition shelves two gears, be vacant shelves in the middle of two gears, move locked after the transition shelves gear of described gearshift joystick.
3. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 1, is characterized in that: variable controller and gearshift control integrated being arranged on of executor and shift gears in joystick.
4. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 3, it is characterized in that: described integrated be after being connected flexible axle by the variable swing arm of variable pump respectively with the gear level that mechanical gear box is arranged, integrated being arranged on realizes in gearshift joystick, by the mobile output of control variables pump simultaneously and the movement of gearbox engaging sleeve of gearshift joystick.
5. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 4, is characterized in that: the flexible axle that the described gear level arranged with variable swing arm and the mechanical gear box of variable pump is connected respectively, form 90 degree of angles.
6. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 1, is characterized in that: described back axle variable hydraulic motor is also connected with 4 wheel driven switch, export in order to control rear axle power.
7. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 6, it is characterized in that: described 4 wheel driven switch is also connected with anti-skid controller, propons and back axle are respectively arranged with velocity sensor, and velocity sensor is connected with back axle variable hydraulic motor through anti-skid controller.
8. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 7, it is characterized in that: described anti-skid controller, for receiving and compare the speed sensor signal that front-rear axle is arranged, and by controlling back axle variable hydraulic motor discharge capacity, realize tire outside diameter linear velocity before and after grain header identical.
9. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 1, is characterized in that: also comprise the electronic control module be connected with running brake assembly and hydrostatic pressure system.
10. grain header two grades of four wheel drive hydraulic stepless speed change driving axis as claimed in claim 1, it is characterized in that: variable hydraulic motor is connected with back axle power shaft by shaft coupling, through deceleration after by power transmission to bridge differential mechanism, differential output shaft and universal joint connection for transmission, rear wheel for harvester is driven to rotate through planetary reduction gear again, rear-axle steering oil cylinder and steering tie rod and bogie connection of rotating, realize grain header and turn to.
CN201420624326.7U 2014-10-27 2014-10-27 Grain header two grades of four wheel drive hydraulic stepless speed change driving axis Active CN204217492U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104686083A (en) * 2014-10-27 2015-06-10 青岛科瑞特激光设备有限公司 Two-gear four-wheel hydraulic stepless variable drive axle assembly for harvester
CN105235508A (en) * 2015-11-09 2016-01-13 青岛科瑞特激光设备有限公司 Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104686083A (en) * 2014-10-27 2015-06-10 青岛科瑞特激光设备有限公司 Two-gear four-wheel hydraulic stepless variable drive axle assembly for harvester
CN105235508A (en) * 2015-11-09 2016-01-13 青岛科瑞特激光设备有限公司 Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester

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