WO2009110281A1 - 走行式農作業機 - Google Patents
走行式農作業機 Download PDFInfo
- Publication number
- WO2009110281A1 WO2009110281A1 PCT/JP2009/051983 JP2009051983W WO2009110281A1 WO 2009110281 A1 WO2009110281 A1 WO 2009110281A1 JP 2009051983 W JP2009051983 W JP 2009051983W WO 2009110281 A1 WO2009110281 A1 WO 2009110281A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- traveling
- speed
- cam
- speed change
- engine
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 18
- 235000009566 rice Nutrition 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 240000007594 Oryza sativa Species 0.000 claims 1
- 230000000994 depressogenic effect Effects 0.000 abstract description 18
- 241000209094 Oryza Species 0.000 abstract description 17
- 239000000446 fuel Substances 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000881 depressing effect Effects 0.000 description 8
- 230000002706 hydrostatic effect Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/003—Transplanting machines for aquatic plants; for planting underwater, e.g. rice
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/006—Other parts or details or planting machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18181—Propulsion control with common controlling member for different functions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/02—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by hand, foot, or like operator controlled initiation means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/04—Ratio selector apparatus
- F16H59/06—Ratio selector apparatus the ratio being infinitely variable
-
- 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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/437—Pump capacity control by mechanical control means, e.g. by levers or pedals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/101—Infinitely variable gearings
- B60W10/103—Infinitely variable gearings of fluid type
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/04—Ratio selector apparatus
- F16H59/06—Ratio selector apparatus the ratio being infinitely variable
- F16H2059/065—Inching pedals for setting the ratio of an hydrostatic transmission
-
- 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
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
Definitions
- the present invention relates to a traveling farm work machine such as a riding rice transplanter or a riding tractor.
- the riding-type rice transplanter has a structure in which a seedling planting device is attached to the rear of the traveling machine equipped with an engine.
- the tractor has a configuration in which a working device such as a tillage device is attached to the rear of the traveling machine body on which the engine is mounted.
- the traveling speed is generally changeable.
- the traveling speed change mode in a traveling agricultural machine is roughly divided into a stepped method that is switched by a manual lever and a stepless method that is adjusted by the amount of depression of a foot pedal provided on the floor of the traveling machine body. .
- Patent Document 1 discloses an example of a transmission mechanism of a riding type rice transplanter having a foot-type shift pedal on a floor.
- a traveling speed change mission is mounted on a traveling machine body, and the traveling speed is adjusted by operating a shift lever provided in the traveling speed change mission.
- the shift lever of the traveling transmission mission and the foot-operated transmission pedal provided in the driving operation unit are mechanically linked by a rod or the like, and when the shift pedal is depressed, the transmission mission is in an accelerated state, When the depressing of the shift pedal is operated, the shift mission is decelerated.
- Patent Document 1 the shift pedal and the accelerator lever of the engine are connected by a wire, and the engine speed increases in proportion to the amount of depression of the shift pedal.
- the vehicle speed of the traveling machine body is increased, the power required for traveling and seedling planting work is increased. Therefore, when the configuration of Patent Document 1 is adopted, appropriate power corresponding to the vehicle speed can be ensured and the operability of the farm work machine can be improved.
- Patent Document 1 when the engine speed when the vehicle is stopped is set to a low speed such as an idle speed for quietness and fuel saving, a predetermined power can be obtained even when the shift pedal is depressed. It is difficult to accelerate, and if it is set so as to be accelerated suddenly, smooth running cannot be performed and the operability is remarkably deteriorated.
- the engine speed must be set to a certain level in a traveling stop state where the shift pedal is not depressed. Since the engine speed cannot be lowered to a low speed such as an idle speed, silence cannot be ensured and fuel saving cannot be achieved.
- the present invention aims to improve such a current situation.
- the inventors of the present application have completed the present invention by paying attention to the cam means, but the present invention includes several variations.
- the first invention is a high-level concept, and an engine capable of changing the number of revolutions by means of a revolution number changing means to a traveling machine body having traveling wheels, and a traveling speed change transmission for transmitting the power of the engine by shifting to the traveling wheels.
- a shift operation unit that is operated by a person to control the travel shift mission, the shift operation unit and the engine speed changing unit are the same as those of the shift operation unit.
- the cam means that moves by operation is interlocked so that the engine speed increases when the speed change operation means is operated at an increased speed, and the engine speed decreases when the speed change operation means is operated at a lower speed.
- the cam means has a cam that rotates in conjunction with a speed change operation of the speed change operation means, and the rotation speed changing means is in accordance with the rotation of the cam. Adjusted.
- the cam is a peripheral surface cam or an end surface cam having a cam surface on an outer peripheral surface or an end surface thereof, and the movable member of the rotation speed changing means is in contact with the cam surface.
- the fourth aspect of the invention is dependent on the second aspect of the invention as in the case of the third aspect of the invention.
- the cam has an arcuate cam groove extending around the rotation axis.
- the cam groove is formed in a state where the distance from the rotation axis gradually changes from one end to the other end, so that the cam groove rotates with one inner surface located on the rotation axis side.
- An inner surface of the other side away from the axis of movement, and the rotational speed changing means is operated at an increased speed on one inner surface of the inner surfaces, and the rotation is performed on the other inner surface.
- the number changing means is actuated for deceleration.
- the rice transplanter has a considerably different traveling speed (working speed) depending on the size of the field and the skill of the operator. Therefore, it can be said that the present invention is suitable for the riding type rice transplanter. Therefore, the fifth invention is applied to a riding type rice transplanter. That is, in a fifth invention according to any one of the first to fourth inventions, the traveling machine body is provided with a steering portion having a seat, a steering handle, and a foot-operated transmission pedal as an example of the shift operation means, and A seedling planting device is attached to the rear part of the traveling machine body so that the height can be adjusted.
- the cam profile is devised by controlling the engine so that the engine is rapidly accelerated at the beginning of movement when the speed change operation means is moved to the speed increasing side, and then smoothly changes after reaching a certain number of revolutions. This can be easily achieved.
- the vehicle speed can be smoothly changed in a state where necessary power is obtained during traveling (work) while the idling rotational speed is set to be low for quietness and fuel saving in the traveling stop state.
- cam structures can be used as the cam means, the structure can be simplified, reduced in size, and reduced in weight by adopting the peripheral cam or end face cam as the third invention and the long groove cam as the fourth invention. There are advantages you can do.
- FIG. 5 is an enlarged sectional view taken along line VV in FIG. 4.
- FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG. 4.
- FIG. 7 is a side view taken along the line VII-VII in FIG. 6. It is a principal part enlarged view of FIG. It is a figure which shows another form of a cam means.
- reference numeral 1 denotes a passenger type rice transplanter.
- This riding type rice transplanter 1 is composed of a traveling machine body 2 and a conventionally known multi-row planting seedling planting device 3 that is mounted on the rear part so as to be movable up and down.
- the traveling machine body 2 includes a pair of left and right front wheels 5.
- a vehicle body frame 4 supported by a pair of left and right rear wheels 6 is provided.
- An engine 7 having an accelerator lever 7a as rotation changing means is mounted on the vehicle body frame 4 of the traveling machine body 2, and power is appropriately shifted from the engine 7 and transmitted to the wheels 5,6.
- the traveling speed change transmission 8 is mounted, whereby the traveling machine body 2 travels forward in the direction of arrow A by four-wheel drive.
- the accelerator lever 7a is always urged to the idle rotation posture by the return spring means 7b provided on the accelerator lever 7a, and is manually operated remotely from the driving operation unit 9 described later.
- a driving operation unit 9 including a steering handle 10 and a seat 11 is provided on the upper surface of the vehicle body frame 4 in the traveling machine body 2, and the right side of the steering handle 10 on the floor surface of the driving operation unit 9 is provided.
- the part is provided with a forward stepping-type shift pedal 12 as a shift operation means and a forward stepping-type brake pedal 13 which are also arranged side by side. These pedals 12 and 13 are rotatably connected to the vehicle body frame 4.
- the traveling transmission mission 8 is provided with an HST (hydrostatic) continuously variable transmission mechanism 14, and the HST continuously variable transmission mechanism 14 is powered by the engine 7.
- a variable hydraulic pump 15 to be driven and a hydraulic motor 16 driven by the hydraulic pressure from the hydraulic pump 15 are provided.
- the continuously variable transmission mechanism 14 continuously changes the traveling speed of the traveling machine body 2 by changing the inclination angle of the swash plate 15a in the hydraulic pump 15 with the transmission lever 17.
- the lever 17 is connected to spring means for urging the speed change lever 17 in the deceleration direction.
- the travel transmission mission 8 is provided with a clutch mechanism 18 for turning on / off (interrupting) power transmission to the wheels 5 and 6, and A brake mechanism 19 for braking the wheels 5 and 6 is provided.
- the traveling transmission mission 8 is provided with a rotary operation shaft 20 for the brake mechanism 19, and the clutch mechanism 18 is connected to one operating member 21 fixed to the operation shaft 20 by a wire or the like. ing.
- the brake mechanism 19 is ON and the clutch mechanism 18 is OFF.
- the brake mechanism 19 is OFF and the clutch mechanism 18 is ON.
- the one actuating member 21 or the operation shaft 20 is provided with spring means (not shown) for urging the actuating member 21 to rotate in the direction of the arrow B.
- a detecting means 24 for detecting a stepping operation and a stepping release operation (details will be described later) of the speed change pedal 12 is provided, while at the left end of the speed change operating shaft 22, a sector gear 25 is provided. Is fixed.
- an arm 26 is fixed to the speed change operation shaft 22, and a front end of a speed change rod rod 27 extending rearward is pivotally attached to the tip of the arm 26. Further, a long groove hole 27a having an appropriate length L is formed at the rear end of the speed change rod rod 27. The long groove hole 27a is provided at the front end of the speed change lever 17 in the continuously variable transmission mechanism 14 of the traveling speed change transmission 8. The pin 17a is slidably fitted and engaged.
- the continuously variable transmission mechanism 14 is in a state where almost no power is transmitted when the speed change rod shaft 27 does not rotate and the speed change rod rod 27 does not move rearward. 6 from the point when the rearward movement of the speed change rod rod 27 exceeds the length L of the long slot 27a by rotating counterclockwise as indicated by the arrow C in FIG. While the traveling speed is increased steplessly in proportion, the shift operation shaft 22 rotates in the clockwise direction indicated by the arrow D in FIGS. 5 and 6 and the shift rod rod 27 moves forward. The traveling speed is reduced steplessly in proportion to
- the fan gear 25 meshes with a pinion 29 that is rotationally driven by an electric actuator (for example, an electric motor) 28. Accordingly, when the sector gear 25 is rotated forward and backward by the electric actuator 28, the speed change operation shaft 22 rotates forward and backward in the counterclockwise direction indicated by the arrow C and the clockwise direction indicated by the arrow D.
- an electric actuator for example, an electric motor
- a shift pedal shaft 30 parallel to the shift operation shaft 22 is rotatably supported at the right end portion of the shift operation shaft 22 (the shift operation shaft 22 is attached to the vehicle body frame 4).
- the shift pedal shaft 30 is interlocked with the shift pedal 12 via an interlocking mechanism 31, and when the shift pedal 12 is stepped down so as to fall from a standing posture against spring means (not shown) ( When the pedal is depressed), the shift pedal shaft 30 rotates counterclockwise as indicated by an arrow E. On the contrary, when the depression release operation of returning the shift pedal 12 from the depressed position to the original position by the spring means is performed, the shift pedal shaft 30 rotates in the counterclockwise direction indicated by the arrow F.
- the detection means 24 at the right end of the speed change operation shaft 22 includes a box 24a fixed to the speed change operation shaft 22, a rotor 24b rotatably provided on the box 24a, and a radially outward direction from the rotor 24b.
- a protruding bifurcated arm 24c and a pair of switches 24d and 24e provided on both sides of the bifurcated arm 24c in the box 24a are provided.
- the bifurcated arm 24c is engaged with the tip of an arm 32 projecting from the speed change pedal shaft 30. For this reason, the bifurcated arm 24c and the rotor 24b are moved by an arrow in the stepping operation on the speed change pedal 12. It rotates in the counterclockwise direction indicated by E ′.
- one switch 24d is switched from OFF to ON.
- the bifurcated arm 24c and the rotor 24b rotate clockwise as indicated by the arrow F ', and the other switch 24e is turned off. Switch to ON.
- reference numeral 33 denotes a controller.
- This controller uses the signals from both switches 24d and 24e of the detecting means 24 as input signals, changes the input signals as appropriate, and outputs them to the electric actuator 28.
- switches 24d and 24e When one switch 24d is turned from OFF to ON, the sector gear 25 is driven by the electric actuator 28 and the speed change operation shaft 22 is rotated in the direction of arrow C, so that solid lines in FIGS. As indicated by an arrow G, the transmission rod rod 27 moves rearward.
- the other switch 24e of both the switches 24d, 24e is turned from OFF to ON, the speed change rod rod 27 moves forward as indicated by a dotted arrow H in FIGS.
- a receiving piece 21a is integrally provided on one operating member 21 for both the clutch mechanism 18 and the brake mechanism 19, and the speed change rod rod 27 is slidable on the receiving piece 21a. It penetrates.
- a stopper piece 27b that contacts the receiving piece 21a is provided at the rear end of the speed change rod rod 27. For this reason, when the speed change rod 22 does not rotate and the speed change rod rod 27 does not move backward, that is, when the speed change pedal 12 is not depressed, the one actuating member 21 has the stopper piece.
- the brake mechanism 19 is turned on and the clutch mechanism 18 is turned off.
- the speed change rod rod 27 moves rearward, the one actuating member 21 rotates against the spring means as shown by a two-dot chain line in FIG. The brake mechanism 19 is turned off and the clutch mechanism 18 is turned on.
- the brake pedal 13 provided side by side with the shift pedal 12 is rotatably connected to the vehicle body frame 4 to a brake shaft 34, and the brake shaft 34 rotates when the brake pedal 13 is depressed.
- An arm 35 is fixed to the brake shaft 34, and a brake rod rod 36 extending rearward is connected to the tip of the arm 35.
- a locking piece 21b provided on the one actuating member 21 is slidably penetrated, and a stopper 36a is provided at the rear end of the brake rod rod 35. Therefore, in a state where the brake pedal 13 is not depressed, the one actuating member 21 can freely operate from a stopped state (position indicated by a solid line in FIG.
- the speed change operation shaft 22 and the accelerator lever 7a of the engine 7 increase the rotational speed of the engine 7 when the speed change operation shaft 22 rotates in the direction indicated by the arrow C, and the speed change operation shaft 22 moves to the arrow D.
- the engine 7 is interlocked so as to decelerate the rotational speed without rotating in the direction indicated by. This point will be described next.
- An accelerator interlocking shaft 38 extending in parallel with the speed change operation shaft 22 is rotatably attached to the body frame 4, and a cam 37 is fixed to the speed change operation shaft 22.
- the outer peripheral surface of the cam 37 is a cam surface 37a in which the radius from the center of rotation sequentially decreases in the direction indicated by the arrow C.
- a roller 39 a is provided at the tip of the first arm 39 protruding from the accelerator interlocking shaft 38, and this roller 39 a is in contact with the cam surface 37 a of the cam 37.
- the second arm 40 protruding from the accelerator interlocking shaft 38 and the accelerator lever 7a of the engine 7 are connected by a wire 41 or the like.
- the shift operation shaft 22 does not rotate, and the shift rod rod 27 does not move rearward, so that the shift lever 17 of the HST type continuously variable transmission mechanism 14 does not rotate.
- the one actuating member 21 is in a stopped state indicated by a solid line in each figure, and the power transmission is cut off when the brake mechanism 19 is ON and the clutch mechanism 18 is OFF. Therefore, the traveling machine body 2 does not travel.
- the shift pedal shaft 30 first rotates in the direction of arrow E. Based on this rotation, the bifurcated arm 24c and the rotor 24b in the detecting means 24 are moved in the direction of arrow E '. By rotating in the direction, one of the switches 24d and 24e in the detecting means 24 is switched from OFF to ON. Then, the electric actuator 28 is driven by the instruction of the controller 33 to rotate the speed change operating shaft 22 in the direction of arrow C, whereby the speed change rod rod 27 moves rearward as indicated by the solid line arrow G. Begin.
- the rearward movement of the speed change rod rod 27 is continued by continuing the depression operation of the speed change pedal 12, and when the rearward movement exceeds the length L of the long groove hole 27a, the speed change lever 17 is Since the HST type continuously variable transmission mechanism 14 is actuated for power transmission, the traveling machine body 2 starts traveling.
- the traveling speed of the traveling machine body 2 is proportional to the rearward movement amount of the speed change rod rod 27 (that is, the operation amount of depressing the speed change pedal 12).
- the shift pedal shaft 30 stops rotating while the rotation of the arrow C of the shift operation shaft 22 by the electric actuator 28 continues.
- the switch 24d is turned from ON to OFF, the rotation of the speed change operation shaft 22 in the direction of the arrow C by the electric actuator 28 is stopped by the instruction of the controller 33, and accordingly, the speed change rod rod 27 Backward movement stops at that position. Accordingly, the traveling machine body 2 is maintained at a traveling speed corresponding to the depressed position of the shift pedal 12.
- the shift pedal shaft 30 stops rotating while the shift operation shaft 22 rotates in the direction of arrow D by the electric actuator 28, so the other switch 24e in the detection means 24
- the electric actuator 28 is stopped by the instruction of the controller 33, and the rotation of the speed change operation shaft 22 in the direction of the arrow D is stopped. Movement stops at that position. As a result, the traveling speed is maintained in a decelerated state.
- the shift lever 17 When the shift pedal 12 has returned to the original position, the shift lever 17 returns to the original state, and the HST continuously variable transmission mechanism 14 is in a state of hardly transmitting power.
- the one actuating member 21 enters a stop state in which the brake mechanism 19 is turned on and the clutch mechanism 18 is turned off. For this reason, the traveling of the traveling machine body 2 stops.
- starting and acceleration by depressing the shift pedal 12 are performed by activating the traveling shift transmission 8 with the actuator 28 via the controller 33, while depressing the shift pedal 12.
- the deceleration and stop are also performed by operating the travel shift transmission 8 to decelerate with the actuator 28, and the detecting means 24 and the actuator 28 are interposed between the shift pedal 12 and the travel shift transmission 8. Therefore, sudden acceleration or sudden start when the shift pedal 12 is depressed and sudden deceleration or sudden stop when the shift pedal is released can be avoided.
- the travel shift transmission 8 is shifted by the actuator 28, the stepping operation force on the shift pedal 12 can be reduced, and the load when the shift lever 17 of the travel shift transmission 8 is shifted. It is also possible to avoid the impact being transmitted to the speed change pedal 12 as a so-called kickback.
- the unit shift operation amount in the shift pedal 12 is Since the relationship between the rotational speed of the engine 7 and the unit shift amount is a linear proportional relationship, if the engine rotational speed at the time of traveling stop is set low, the engine rotational speed at the time of traveling becomes lower than a predetermined value and vice versa. In addition, when the engine speed during traveling is set to a predetermined value, the engine speed when traveling is stopped increases.
- the operation of the accelerator lever 7a is performed by the rotation of the cam 37, whereby the relationship between the unit shift operation amount of the shift pedal and the unit shift amount of the engine speed is represented by the cam.
- the cam surface 37a at 37 an arbitrary relationship such as a non-linear proportional relationship can be obtained. Accordingly, the engine 7 is kept at a low rotation speed such as the lowest idle rotation in the travel stop state in which the shift pedal 12 is not depressed, and the desired speed is obtained by depressing the shift pedal 12. Can be raised to rotation.
- FIG. 9 shows another embodiment.
- the cam means forms a cam groove 37 ′ instead of forming a cam surface on the outer periphery.
- the cam groove 37 ′ when the cam groove 37 ′ is provided in the sector gear 25 so as to extend in the circumferential direction, the cam groove 37 ′ is provided with a radius R 1 from the start end (one end) 37 a ′ to the rotation center of the sector gear 25. Is tilted in the direction of rotation of the sector gear 25 in the direction of arrow C so as to be larger than the radius R2 from the terminal end (the other end) 37b 'to the rotation center of the sector gear 25. That is, the cam groove 37 ′ is inclined so as to approach the center of rotation as it goes in the direction opposite to the speed-up rotation direction (D direction) (C direction) of the sector gear 2.
- a roller 39 a provided at the tip of the first arm 39 protruding from the accelerator interlocking shaft 38 is slidably fitted, and further, a second fixed to the accelerator interlocking shaft 38.
- the arm 40 and the accelerator lever 7a of the engine 7 are connected by a wire 41 or the like.
- the proportional relationship between the unit shift operation amount of the shift pedal 12 and the unit shift amount of the rotation speed of the engine 7 is set to a different proportional relationship between the start / run state and the deceleration / stop state. Can do.
- the rotational speed of the engine 7 can be arbitrarily changed by manually rotating the accelerator lever 7a. .
- the present invention can be suitably applied to a traveling farm work machine such as a riding type rice transplanter to improve its usefulness, and thus has industrial applicability.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Sciences (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Transplanting Machines (AREA)
- Control Of Transmission Device (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
2 走行機体
3 苗植え装置
4 車体フレーム
5 前輪
6 後輪
7 エンジン
7a アクセルレバー(回転変更手段)
8 走行変速ミッション
9 運転操作部
12 変速ペダル(変速操作手段)
13 ブレーキペダル
14 走行変速ミッションの中核を成すHST式無段変速機構
17 変速レバー
18 クラッチ機構
19 ブレーキ機構
21 作動部材
22 変速操作軸
24 検出手段
25 変速用扇形歯車
27 変速ロッド杆
28 アクチエータ
33 コントローラ
37 カム
37a カム面
37′ カム溝
37c′、37d′ カム溝の内側面
Claims (5)
- 走行車輪を有する走行機体に、回転数変更手段によって回転数を変更できるエンジンと、前記エンジンの動力を前記走行車輪に変速して伝える走行変速ミッションと、人が操作して前記走行変速ミッションを制御する変速操作手段とが設けられている、
という走行式農作業機であって、
前記変速操作手段とエンジンの回転数変更手段とは、前記変速操作手段の操作で動くカム手段により、変速操作手段を増速に操作するとエンジン回転数が高くなり、変速操作手段を減速に操作するとエンジン回転数が低くなるように連動している、
走行式農作業機。 - 前記カム手段は、前記変速操作手段の変速操作に連動して回転するカムを有しており、前記カムの回転に応じて前記回転数変更手段が調節される、
請求項1に記載した走行式農作業機。 - 前記カムはその外周面又は端面にカム面を有する周面カム又は端面カムであり、前記回転数変更手段の可動部材が前記カム面に当接している、
請求項2に記載した走行式農作業機。 - 前記カムには、回動軸心回りに延びる円弧状のカム溝が、回動軸心からの距離が一端から他端に向けて徐々に変化する状態で形成されており、このため前記カム溝は、回動軸心の側に位置した一方の内側面と回動軸心から離れた他方の内側面とを有しており、前記両内側面のうち一方の内側面にて前記回転数変更手段が増速に作動させられ、他方の内側面にて前記回転数変更手段が減速に作動させられる、
請求項2に記載した走行式農作業機。 - 前記走行機体は、座席と操縦ハンドルと前記変速操作手段の一例としての足踏み式変速ペダルとを有する操縦部が設けられており、かつ、前記走行機体の後部には苗植え装置が高さ調節可能に取り付けられている、
請求項1~4のうちのいずれかに記載した走行式農作業機としての乗用型田植機。
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Cited By (2)
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WO2011034167A1 (ja) * | 2009-09-17 | 2011-03-24 | ヤンマー株式会社 | 乗用型作業機 |
JP2011063137A (ja) * | 2009-09-17 | 2011-03-31 | Yanmar Co Ltd | 乗用型農作業機 |
Families Citing this family (7)
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CN105626278A (zh) * | 2014-10-28 | 2016-06-01 | 广西大学 | 高速乘坐式插秧机多目标控制、反馈式的hmt变速操作系统 |
KR102282516B1 (ko) * | 2014-12-09 | 2021-07-28 | 주식회사 대동 | 작업차의 주행 조작 장치 |
CN107580576B (zh) * | 2015-04-03 | 2020-02-07 | 凯斯纽荷兰(中国)管理有限公司 | 用于cvt拖拉机的高操纵灵活性控制 |
US9848535B2 (en) * | 2016-02-04 | 2017-12-26 | Bcs S.P.A. | High-security and low-noise agricultural machine |
KR102359185B1 (ko) * | 2017-09-22 | 2022-02-08 | 주식회사 대동 | 작업차의 주행 조작 장치 |
KR101956598B1 (ko) * | 2018-02-05 | 2019-06-24 | 동양물산기업 주식회사 | 전동제어에 의한 제동장치를 구비하는 농기계 |
KR102123801B1 (ko) * | 2019-11-18 | 2020-06-22 | 동양물산기업 주식회사 | 농기계용 전동제어유닛 |
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JP2007069763A (ja) * | 2005-09-07 | 2007-03-22 | Yanmar Co Ltd | 作業車両 |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2011034167A1 (ja) * | 2009-09-17 | 2011-03-24 | ヤンマー株式会社 | 乗用型作業機 |
JP2011063137A (ja) * | 2009-09-17 | 2011-03-31 | Yanmar Co Ltd | 乗用型農作業機 |
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KR101705028B1 (ko) * | 2009-09-17 | 2017-02-09 | 얀마 가부시키가이샤 | 승용형 작업기 |
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CN101959733A (zh) | 2011-01-26 |
JP2009209850A (ja) | 2009-09-17 |
CN103318179A (zh) | 2013-09-25 |
KR101542440B1 (ko) | 2015-08-06 |
KR20100125250A (ko) | 2010-11-30 |
JP5041539B2 (ja) | 2012-10-03 |
CN103318179B (zh) | 2016-08-24 |
CN101959733B (zh) | 2014-05-14 |
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