KR101590434B1 - Riding-type rice transplanter - Google Patents

Riding-type rice transplanter Download PDF

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Publication number
KR101590434B1
KR101590434B1 KR1020107018255A KR20107018255A KR101590434B1 KR 101590434 B1 KR101590434 B1 KR 101590434B1 KR 1020107018255 A KR1020107018255 A KR 1020107018255A KR 20107018255 A KR20107018255 A KR 20107018255A KR 101590434 B1 KR101590434 B1 KR 101590434B1
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Prior art keywords
pedal
speed change
brake
speed
turned
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KR1020107018255A
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Korean (ko)
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KR20100124722A (en
Inventor
마코토 이노우에
타카시 나카지마
케이시 키누타
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얀마 가부시키가이샤
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    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Transportation (AREA)
  • Transplanting Machines (AREA)
  • Braking Elements And Transmission Devices (AREA)

Abstract

The pasture stage includes a traveling vehicle 2 having traveling wheels 5 and 6 driven by an engine 7, a submersible device 3 mounted on a rear portion of the traveling vehicle 2, traveling wheels 5 and 6, And a speed change pedal 12 provided on the driving operation portion 9 of the traveling vehicle. The passenger-type engraving machine also includes an actuator 28 for shifting the traveling change mission, and a detection means 24 for detecting the depressing operation and the depressing operation of the transmission pedal 12. When the detecting means 24 detects the depression operation of the speed change pedal 12, the actuator 28 operates the speed change transmission 8 (14) as the speed increase speed. When the detecting means detects the depression release operation of the speed change pedal 12, And the shift mission [8 (14)] is operated with deceleration.

Figure R1020107018255

Description

{RIDING-TYPE RICE TRANSPLANTER}

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a passenger type weaving machine comprising a submersible device mounted on a rear portion or a front portion of a traveling vehicle. More specifically, the present invention relates to a passenger-type rapier pedal that is performed by a shift pedal of a type in which a change of a traveling speed is stepped on.

In the case of an automobile such as a passenger car or a truck, the change of the vehicle speed is generally performed by adjusting the fuel injection amount. However, since the engine of the pasturing period not only runs but also drives the seedling plant, , So that the vehicle speed is changed by controlling the traveling change mission.

As an example thereof, Patent Document 1 discloses mechanically linking a shift lever in a transmission shift mission and a shift pedal in a footrest step provided on a drive control section by a rod or the like. In this patent document, when the shift pedal is depressed, the speed change mission is in an accelerated state. When the stepping on the speed change pedal is released (when the speed change pedal is moved back), the speed change mission is in the deceleration state.

Japanese Patent Application Laid-Open No. 2003-220933

As shown in Patent Document 1, when the vehicle speed is changed by the step-variable shifting pedal, both hands are free, so that the steering operation and the operation of various levers are easy compared with the case where the vehicle speed is controlled by the manual lever.

However, in Patent Document 1, since the speed change pedal is mechanically connected to the speed change lever of the travel speed change mission by a rod or the like, the movement of the speed change pedal is immediately transmitted to the speed change mission and the traveling gas is suddenly accelerated or rapidly accelerated Or a problem that the running vehicle suddenly decelerates or suddenly stops by depressing the shift pedal. In other words, it has been feared that the responsiveness of the response of the movement of the traveling change mission to the movement of the transmission pedal is excessively sensitive.

When the traveling gas is suddenly accelerated or rapidly accelerated, the front portion of the traveling gas is lifted and the rear submersible unit is lowered, resulting in a problem that the depth of the seedling to the packaging surface is excessively deeper than a predetermined value. If it is suddenly or suddenly stopped, the traveling vehicle will be off to the side, and it will become easy to steer.

Further, as in Patent Document 1, in the configuration in which the movement of the speed change pedal is transmitted to the running speed change mission by the load, the resistance of the shift lever in the travel speed change mission acts as a resistance against the movement of the speed change pedal, There is a problem that the shift operation operability and the driving operation feeling are lowered by the problem that the shift lever is operated or the so-called kickback phenomenon in which the shock or the load is transmitted to the speed change pedal.

An object of the present invention is to solve the problem of these shifts in the passenger type rapper.

The present invention has a multi-faceted expansion. A first aspect of the present invention is a structure of the most advanced concept, and has a traveling vehicle on which an engine is mounted and a submersible device mounted on the rear portion of the traveling vehicle so as to be adjustable in height, And a step-variable shifting pedal for changing the speed of travel is provided in the traveling speed change mission, wherein the traveling speed change mission is provided with a traveling wheel, a transmission for transmitting the power of the engine to the traveling road wheel, Control is performed by a power type actuator that operates in response to the movement of the pedal.

According to a second aspect of the present invention, in the first aspect of the invention, there is provided a detecting means for detecting a stepping motion and a returning motion of the speed change pedal as electric signals, and the detecting means and the actuator are configured such that, The actuator accelerates the traveling speed change mission, and if the detecting means detects the return movement of the speed change pedal, the actuator interlocks with the driving speed change mission so as to decelerate.

According to a third aspect of the present invention, in the second aspect of the present invention, the detecting means can detect the amount of movement per unit time of the speed change pedal, while the actuator can control the traveling change mission so as to adjust the vehicle speed change per unit time, Between the means and the actuator, a controller capable of adjusting the relationship between the amount of movement of the speed change pedal per unit time and the rate of change of the vehicle speed is interposed.

According to the fourth invention, in the first to third inventions, an electric motor is employed as the actuator.

A fifth invention is a sub-concept of the first to fourth inventions, and is characterized in that, in addition to the first to fourth inventions, a brake mechanism for imparting a resistance to the rotation of the running wheels and an output of the running shift mission are connected to the running wheels And an operating member for switching the brake mechanism and the clutch mechanism simultaneously, wherein the operating member is in a running stop state in which the clutch mechanism is turned off by turning the brake mechanism ON, The brake mechanism can be turned OFF and the clutch mechanism can be turned ON to switch to the running state. In the fifth aspect of the present invention, in a state in which the operating member and the speed change pedal are not stepped on the speed change pedal, the operating member is in a stopped state, and in a state in which the operating member is in a running state, have.

According to a sixth aspect of the present invention according to the fifth aspect of the present invention, in the fifth aspect of the present invention, when the brake pedal is stepped on, the brake pedal and the operating member are provided with a brake pedal Interrupts the relationship and interlocks it so that it is in a stop state.

(Effects of the Invention)

In the first invention, since the movement of the speed change pedal is transmitted to the travel speed change mission through the power type actuator, it is possible to prevent the travel speed change mission from responding sensitively to the movement of the speed change pedal. Therefore, it is possible to prevent a sudden acceleration or a rapid acceleration due to depression of the speed change pedal, and as a result, it is possible to prevent the traveling gas from being tilted forward and prevent the seedling from being deeply implanted. In addition, since the sudden stop or the rapid deceleration of the shift pedal can be prevented by the return movement of the transmission pedal, it is possible to prevent or significantly reduce the traveling of the traveling gas to the side.

In addition, since the load and the impact at the time of shifting operation of the shift lever in the shift transmission mission are not transmitted to the speed change pedal as a so-called kickback, the shifting operability and the driving feeling can be greatly improved.

Although the movement of the transmission pedal can be transmitted to the actuator by a mechanical mechanism, the use of the electrical detection means as in the second invention is advantageous in terms of design since the interlocking member is unnecessary.

According to the third aspect of the invention, for example, it is possible to reduce the speed increase rate at the initial stage of the pedal depression operation (at the time of oscillation) or decrease the deceleration rate (decrease) at the end of the depression release operation of the speed change pedal It is possible to smoothly change the speed of the traveling vehicle so that the traveling vehicle can be stably driven. As a result, it is possible to prevent an effect of being deeply implanted, You can encourage.

As the actuator, various types such as a hydraulic motor and an electromagnetic solenoid can be used. However, if an electric motor (preferably a stepping motor) is employed as in the fourth invention, a simple structure and a complicated control are possible. Therefore, the fourth invention is a form suitable for the present invention.

According to the fifth aspect of the present invention, when the operator releases his / her foot from the speed change pedal, the clutch mechanism is turned OFF to stop the transmission of power to the traveling wheels and the brake mechanism is turned ON to stop the rotation of the traveling wheels. So that the operability of the rice plant can be improved.

In the planting work, it may be necessary to make a sudden stoppage in packaging because of safety. According to the sixth aspect of the present invention, when the brake pedal is depressed, the running vehicle suddenly stops in priority to the operation of the speed change pedal, so that the operability can be further improved.

Fig. 1 is a side view of a passenger-type rearing machine to which the present invention is applied.
2 is a plan view of Fig.
3 is a schematic diagram of a traveling shift mission;
4 is a plan view showing the travel control device.
5 is an enlarged cross-sectional view taken along the line VV in Fig.
6 is an enlarged cross-sectional view taken along the line VI-VI of FIG.
Fig. 7 is an enlarged view of the main part of Fig.
8 is a diagram showing the relationship between the shift amount of the speed change pedal and the change rate of the running speed.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2, reference numeral 1 denotes a passenger type weaving machine. This passive type sewing machine 1 comprises a traveling base 2 and a conventionally known multidisciplinary planting unit 3 mounted on the rear portion of the traveling base 2, Includes a body frame 4 supported by a pair of left and right rear wheels 6 in the same manner as a pair of left and right front wheels 5.

The engine 7 is mounted on the vehicle body frame 4 of the traveling vehicle 2 and the transmission 7 shifts the power appropriately to transmit the power to the front and rear wheels 5, The mission 8 is mounted so that the traveling base 2 advances in the direction of arrow A with four-wheel drive.

A driving operation portion 9 having a steering wheel 10 and a seat 11 is provided on the upper surface of the vehicle body frame 4 of the running vehicle 2, A shift pedal (accelerator pedal) 12 that is stepped on in the forward direction and a brake pedal 13 that is stepped on in the forward direction are arranged side by side on the right side portion of the steering wheel 10 on the floor surface Is installed. These pedals 12 and 13 are rotatably mounted on the vehicle body frame 4. [

As shown in Fig. 3, the traveling speed change mission 8 is provided with a continuously variable transmission mechanism 14 of HST (hydrostatic) type. The HST type continuously variable transmission mechanism 14 includes a variable hydraulic pump 15 driven by the engine 7 and a hydraulic motor 16 driven by the hydraulic pressure from the hydraulic pump 15 And the running speed of the traveling vehicle 2 is continuously changed by changing the inclination angle of the swash plate 15a of the hydraulic pump 15 to the shift lever 17. [ Although not shown, a spring means for biasing the shift lever 17 in the deceleration direction is connected to the shift lever 17.

3, the transmission mechanism 8 is provided with a clutch mechanism 18 for ON / OFF (connection / disconnection) of power transmission to the respective wheels 5, 6, And a brake mechanism 19 for braking the wheels 5 and 6 are provided.

The operating shift member 8 is provided with a rotary operating shaft 20 for the brake mechanism 19. One operating member 21 fixed to the operating shaft 20 is provided with the clutch mechanism 18 are connected by a wire or the like. Thus, when the one operating member 21 is in the position indicated by the solid line in Figs. 4 and 7, the brake mechanism 19 is in the ON state and the clutch mechanism 18 is in the OFF state, When the two-dot chain line is turned by turning in the rearward direction indicated by the arrow B in Fig. 7, the brake mechanism 19 is OFF and the clutch mechanism 18 is ON. A spring means (not shown) for biasing the operation member 21 to rotate in the direction of the arrow B is provided on the single operation member 21 or the operation shaft 20. [

A shift operating shaft 22 extending in the transverse direction (left-right direction when viewed from the front of the traveling base 2) is rotatably supported on the front portion of the vehicle body frame 4 by a bearing 23 A detection means 24 for detecting a depressing operation and a depressing operation of the speed change pedal 12 (to be described in detail later) is provided on the right end of the speed change operation shaft 22, And a sector gear 25 is fixed to the left end of the arm 22.

An arm 26 is fixed to the shift operating shaft 22 and a front end of a shift rod lever 27 extending rearward is pivotally mounted on the front end of the arm 26. [ A long groove hole 27a having an appropriate length L is formed at the rear end of the shift rod lever 27. The continuously variable transmission mechanism 14 of the traveling speed change mission 8 , The pin 17a provided at the tip of the shift lever 17 is slidably fitted and engaged.

Thus, the continuously-variable transmission mechanism 14 is in a state in which it transmits little power when the shift operating shaft 22 does not rotate and the shift rod lever 27 does not move rearward. However, 22 is rotated in the counterclockwise direction indicated by an arrow C in FIGS. 5 and 6 so that the shift rod lever 27 moves backward and its movement exceeds the length L of the long groove hole 27a The running speed is increased steplessly in proportion to the rearward movement of the shift rod lever 27 from the point of time. On the other hand, when the shift operating shaft 22 rotates in the clockwise direction indicated by the arrow D in Figs. 5 and 6 and the shift rod lever 27 moves forward, the stepless change-speed mechanism 14 is changed to deceleration, Is decelerated steplessly.

A pinion 29, which is rotationally driven by an electric actuator (for example, an electric motor) 28, is engaged with the sector gear 25. Therefore, by rotating the sector gear 25 in the forward and reverse directions with the electric actuator 28, the shift operating shaft 22 rotates in the counterclockwise direction indicated by the arrow C and in the clockwise direction indicated by the arrow D.

A transmission pedal shaft 30 extending in parallel with the shift operation shaft 22 is rotatably supported at a right end portion of the transmission operating shaft 22. The transmission pedal shaft 30 is rotatably supported by a body frame 4). The transmission pedal shaft 30 interlocks with the speed change pedal 12 via the interlocking mechanism 31. The speed change pedal 12 is urged by a spring means (Depressed), the transmission pedal shaft 30 rotates in the clockwise direction indicated by arrow E. On the contrary, when the stepping-off operation for returning the transmission pedal 12 from the depressed position to the original standing posture by the spring means is performed, the transmission pedal shaft 30 rotates in the counterclockwise direction indicated by the arrow F.

The detection means 24 disposed at the right end of the shift operation shaft 22 is composed of a box 24a fixed to the shift operation shaft 22 and a rotor 24 Shaped arm 24c protruding radially outward from the rotor 24b and a pair of switches 24a and 24b provided on both sides of the bifurcated arm 24c in the box 24a, 24d, and 24e. The bifurcated arm 24c is engaged with the distal end of the arm 32 projecting from the transmission pedal shaft 30 so that the bifurcated arm 24c and the rotor 24b are engaged with the transmission pedal 12 ) In the counterclockwise direction indicated by the arrow E '. Then, one switch 24d is switched from OFF to ON. Conversely, when the shift pedal 12 is depressed from the depressed state, the bifurcated arm 24c and the rotor 24b rotate in the clockwise direction as indicated by the arrow F ', and the other switch 24e Is switched from OFF to ON.

A controller 33 is shown at 33 in Fig. The controller 33 uses the signals of both the switches 24d and 24e of the detecting means 24 as input signals and appropriately changes the input signals to output an instruction to the electric actuator 28 When the switch 24d of either of the two switches 24d and 24e is turned from OFF to ON, the electric actuator 28 is driven so that the shift operating shaft 22 is rotated in the direction of the arrow C The shift rod lever 27 is moved rearward as indicated by a solid line arrow G in Figs. Conversely, when the other switch 24e of the both switches 24d and 24e is turned from OFF to ON, as shown by a dotted line arrow H in Figs. 4, 6 and 7, the shift rod lever 27 is moved forward .

7, receiving members 21a are provided integrally with one operating member 21 for both the clutch mechanism 18 and the brake mechanism 19, and the receiving members 21a are provided with the above- The shift rod lever 27 is slidably penetrated. A stopper piece 27b is provided at the rear end of the transmission rod lever 27 to contact the receiving piece 21a. Therefore, when the shift operating shaft 22 does not rotate and the shift rod lever 27 does not move rearward (that is, when the shift pedal 12 is not operated in the pressed state) One operating member 21 is held in a stopped state in which the brake mechanism 19 is turned on by the stopper piece 27b and the clutch mechanism 18 is turned off. When the shift rod lever 27 is moved backward, the one operating member 21 is rotated against the spring means to the rear of the arrow B as shown by the two-dot chain line in Fig. 7, and the brake mechanism 19 are OFF and the clutch mechanism 18 is ON.

The brake pedal 13 provided to the speed change pedal 12 is connected to a brake shaft 34 rotatably supported on the vehicle body frame 4 so that when the brake pedal 13 is depressed, (34) rotates. An arm 35 is fixed to the brake shaft 34 and a brake load lever 36 extending rearward is connected to the front end of the arm 35. The brake load lever 36, And a stopper 36a is provided at the rear end of the brake load lever 36. The stopper 36a is provided at the rear end of the brake rod lever 36 so as to be slidable with respect to the locking piece 21b provided on the one operating member 21. [ 7) from the stop state (the position indicated by the solid line in Fig. 7) of the one operating member 21 in a state in which the brake pedal 13 is not depressed When the brake pedal 13 is depressed against the spring when the one operating member 21 is in the running state, regardless of the shift rod lever 27, The one operating member 21 can be forcibly stopped. In other words, it is possible to forcibly stop the operation of the transmission pedal 12 in priority.

In the above configuration, when the shift pedal 12 is not stepped on, the shift operation shaft 22 does not rotate and the shift rod lever 27 does not move backward. Therefore, The shift lever 17 of the HST type continuously variable transmission mechanism 14 does not rotate.

When the shift pedal 12 is not depressed, the one operating member 21 is at a stop position shown by the solid line in FIG. 7, for example, and the brake mechanism 19 is ON and the clutch mechanism 18 Is OFF, the traveling vehicle 2 does not travel.

Subsequently, when the shift pedal 12 is depressed, the transmission pedal shaft 30 rotates in the direction of arrow E in Fig. 5, and based on this rotation, the two-forked shape of the detection means 24 The arm 24c and the rotor 24b are rotated in the direction of the arrow E 'so that one of the switches 24d and 24e of the detecting means 24 is switched from OFF to ON, The electric actuator 28 rotates the shift operating shaft 22 in the direction of the arrow C by the instruction of the controller 33. [ Thus, the shift rod lever 27 starts to move backward as indicated by the solid line arrow G in Fig. 6, for example.

The amount of initial movement of the shift rod lever 27 to the rear side becomes the length L of the long groove hole 27a at the rear end thereof so that the stopper 27b is engaged with the receiving piece The one operating member 21 is rotated in the traveling state indicated by the chain double-dashed line so that the brake mechanism 19 is OFF and the clutch mechanism 18 is ON, .

The rearward movement of the shift rod lever 27 is continued by continuation of the depressing operation of the speed change pedal 12 and at the stage where the backward movement exceeds the length L of the long groove hole 27a, The lever 17 is pivoted rearward, and the HST type continuously variable transmitting mechanism 14 operates in the power transmitting state. As a result, the traveling vehicle 2 starts traveling. The traveling speed of the traveling vehicle 2 is made proportional to the amount by which the shifting rod lever 27 is further moved backward (that is, the stepping amount of the transmission pedal 12).

When the pressing operation of the transmission pedal 12 is stopped, the controller 33 continues the rotation of the transmission actuator shaft 22 in the direction of arrow C by the electric actuator 28, One of the switches 24d is turned from ON to OFF and the rotation of the electric actuator 28 in the direction of the arrow C of the shift operating shaft 22 is stopped by the instruction of the controller 33, The rearward movement of the shift rod lever 27 is stopped at that position. Therefore, the traveling speed of the traveling vehicle 2 is maintained at a speed corresponding to the pressing position of the transmission pedal 12.

When the foot pedal 12 is released and the pedal is released from the state in which the speed change pedal 12 is depressed by the spring means to the original standing posture, And the bifurcated arm 24c and the rotor 24b of the detection means 24 rotate in the direction of the arrow F 'based on the rotation. The other switch 24e of both the switches 24d and 24e of the detecting means 24 is switched from OFF to ON so that the electric actuator 28 is controlled by the controller 33 And is driven to rotate the shift operating shaft 22 in the direction of arrow D. As a result, the shift rod lever 27 moves forward as indicated by the dotted arrow H in the figure.

The transmission lever 17 is rotated backward by the forward movement of the speed change load lever 27 so that the HST type stepless transmission mechanism 14 is operated in the deceleration state and therefore the traveling speed of the traveling vehicle 2 is reduced do.

The rotation of the arm 32 is stopped in a state in which the transmission operating shaft 22 is rotated in the direction of the arrow D by the electric actuator 28 so that when the depression operation of the transmission pedal 12 is stopped halfway, The electric actuator 28 is stopped by the instruction of the controller 33 to stop the shift operation shaft 22 in the direction of arrow D The rotation stops. As a result, the forward movement of the shift rod lever 27 is stopped at that position, and the traveling speed is maintained in a decelerated state.

When the speed change pedal 12 is completely returned to its original standing posture by the spring means, the shift lever 17 also returns to its original state, and the HST type continuously variable transmitting mechanism 14 is in a state of substantially not transmitting power The one operating member 21 is brought into a stopped state in which the brake mechanism 19 is ON and the clutch mechanism 18 is OFF so that the travel of the traveling vehicle 2 is stopped.

The oscillation and acceleration of the step-on operation of the speed-change pedal 12 are transmitted to the actuator 28 via the detecting means 24 and the controller 33 for detecting the stepping on the speed-change pedal 12, 8 and the speed change stopping mission 8 is performed by the actuator 28 via the deceleration and stopping degree detecting means 24 and the controller 33 by depressing the speed change pedal 12, Since the detecting means 24 and the actuator 28 are present between the speed change pedal 12 and the speed change transmission 8, the speed change of the speed change pedal 12 due to the depression of the speed change pedal 12 Rapid deceleration or sudden stop due to rapid acceleration or sudden acceleration or rapid return of the transmission pedal 12 can be avoided.

In addition, since the shift transmission 8 is shifted by the actuator 28, the pressing force of the transmission pedal 12 can be reduced, and when the transmission pedal 12 is operated, The load and impact of the shift lever 17 of the shift lever 8 can be prevented from being transmitted to the transmission pedal 12 as a so-called kickback.

In the present embodiment, as shown in Fig. 8, the controller 33 has a function of changing the unit shift amount of the running speed with respect to the unit operation amount of the speed change pedal 12. 8 shows the relationship between the manipulated variable S of the speed change pedal 12 and the shift amount W of the running speed, and the relationship is expressed by a first-order straight line X indicated by a solid line or by a two-dot chain line Or a downwardly convex quadratic curve Y as shown in Fig.

In the relationship of the primary line X shown by the solid line in Fig. 8, the unit shift amount? W of the running speed with respect to the unit operation amount? S of the speed change pedal 12 is set to be linearly proportional over the entire area , The downwardly convex quadratic curve Y indicated by the chain double-dashed line, the unit shift amount of the running speed with respect to the unit operation amount S of the speed change pedal 12 is smaller than the relation of X over the entire region, Is set to be the smallest and gradually increases in the initial stage of the depression operation of the transmission pedal 12.

The amount of stepping displacement of the transmission pedal 12 can be calculated by measuring the time when one of the switches 24d of the detecting means 24 is turned on. The return displacement amount of the transmission pedal 12 can be calculated by measuring the time when the other switch 24e of the detecting means 24 is turned ON. The detection means 24 may have a sensor function for directly detecting the displacement amount (displacement angle) of the transmission pedal 12. X and Y may be realized by a cam.

The increase rate of the running speed becomes slow at the initial stage of the depression operation of the speed change pedal 12 (at the time of oscillation), and at the end of the depression release operation of the speed change pedal 12 The deceleration rate of the running speed can be made gentle so that the effect of prevention of deeply being implanted at the time of the oscillation and the effect of avoiding the deviation from the side at the time of stop can be further promoted.

When setting the relationship between the manipulated variable S and the speed change amount W of the traveling speed of the speed change pedal 12 by the controller 33, the first straight line X or the downwardly convex quadratic curve Y), the inclination of the primary straight line X can be changed, the shape of the downwardly convex quadratic curve Y can be changed, or the upward curved quadratic curve can be obtained, (At the time of the oscillation) and the step-release operation (at the time of the stop) of the operation lever 12 by using the first and second curves.

In the present embodiment, the drive rotation speed of the engine 7 is automatically changed in accordance with the shift operation of the traveling change mission 8, which is illustrated in Fig.

6, a cam groove 37 extending in the circumferential direction is formed in the sector gear 25. The cam groove 37 is formed such that its leading end 37a is in contact with the sector gear 25 (The other end) 37b is located at a portion of the small radius R2 from the shift operating shaft 22, and the other end 37b is located at a portion of the large radius R1 from the shift operating shaft 22, Therefore, the cam groove 37 is inclined so as to gradually approach the center of rotation of the sector gear 25 in the direction of rotation of the sector gear 25 in the direction of the arrow C (i.e., the rotational direction for increasing the running speed).

The front end of the first arm 39 protruding from the transverse shaft 38 rotatably supported on the body frame 4 is slidably engaged with the cam groove 37 while the transverse shaft 38 is fixed The second arm 40 and the accelerator lever 7a of the engine 7 are connected by a wire 41 or the like.

In this configuration, when the sector gear 25 rotates in the direction of the arrow C (direction in which the speed of the running speed is increased), the accelerator lever 7a in the cam groove 37 is brought into contact with the return spring means 7b The rotation speed of the engine 7 is automatically increased in proportion to the increase of the running speed from the idle rotation.

On the other hand, when the sector gear 25 rotates in the direction of the arrow D (the direction of decelerating the traveling speed), the accelerator lever 7a is guided by its return spring means 7b by the guiding action of the cam groove 37 The rotation speed of the engine 7 is automatically reduced in proportion to the deceleration of the running speed, and the idle rotation is performed when the running is completely stopped.

Needless to say, the rotational speed of the engine 7 can be arbitrarily changed by manually turning the accelerator lever 7a.

≪ Industrial Availability >

The present invention can be applied to a passenger-type reverberation machine to improve the usability thereof, and thus has industrial applicability.

1: Passenger type rice planting 2:
3: Submersible device 4: Body frame
5: front wheels (traveling wheels) 6: rear wheels (traveling wheels)
7: Engine 8: Driving shift mission
9: Driving operation part 12: Shift pedal
13: Brake pedal
14: HST type stepless speed change mechanism as the backbone of the transmission shift mission
17: shift lever 18: clutch mechanism
19: Brake mechanism 21: Operation member
22: shift operation shaft 24: detection means (sensor)
25: sector gear for transmission 27: shift rod lever
28: actuator (electric motor) 33: controller

Claims (8)

A traveling vehicle on which an engine is mounted, and a submersible device mounted on a rear portion or a front portion of the traveling vehicle so as to be adjustable in height,
A drive control section having a seat, a running wheel, a running speed change mission for transmitting the power of the engine to the running wheel, and a step-up type pedal for changing a running speed, As a rice plant,
And a controller for driving the actuator in the direction of the speed increasing / decreasing speed when the detecting means is ON, wherein the control means comprises:
When the speed change pedal is held at an arbitrary position in the acceleration and deceleration operating region, driving of the actuator in the increasing and decreasing direction is continued so that the detecting means is turned off and the controller stops the actuator. Wherein the first and second passageways are connected to each other. The method according to claim 1,
The detecting means and the actuator are configured such that when the detecting means detects the stepping motion of the speed change pedal, the actuator increases the traveling speed change mission, and when the detecting means detects the returning motion of the speed change pedal, Wherein the first and second passages are connected to each other. 3. The method of claim 2,
Wherein the detecting means is capable of detecting a shift amount per unit time of the speed change pedal while the actuator is capable of controlling the shift change mission so as to adjust a vehicle speed change per unit time, Wherein a controller capable of adjusting a relationship between a shift amount of the speed change pedal and a rate of change of a vehicle speed is interposed. 4. The method according to any one of claims 1 to 3,
Wherein the actuator is an electric motor. 4. The method according to any one of claims 1 to 3,
A brake mechanism for imparting a resistance to the rotation of the running wheels and a clutch mechanism for connecting / disconnecting the output of the running transmission to / from the running wheels,
The brake mechanism is turned on and the clutch mechanism is turned off while the speed change pedal is operated to the neutral state and the brake mechanism is turned off and the clutch mechanism is turned on when the speed change pedal is operated to the speed increase side, Wherein the transmission pedal, the brake mechanism, and the clutch mechanism are interconnected and linked. 5. The method of claim 4,
A brake mechanism for imparting a resistance to the rotation of the running wheels and a clutch mechanism for connecting / disconnecting the output of the running transmission to / from the running wheels,
The brake mechanism is turned on and the clutch mechanism is turned off while the speed change pedal is operated to the neutral state and the brake mechanism is turned off and the clutch mechanism is turned on when the speed change pedal is operated to the speed increase side, Wherein the transmission pedal, the brake mechanism, and the clutch mechanism are interconnected and linked. 6. The method of claim 5,
Further comprising a brake pedal for switching between a stop state in which the brake mechanism is turned ON and the clutch mechanism is OFF and a traveling state in which the brake mechanism is OFF and the clutch mechanism is ON,
Wherein the brake mechanism and the clutch mechanism are interlockingly connected to the brake pedal such that the brake pedal is in a stopped state in preference to the transmission pedal by a stop operation of the brake pedal. The method according to claim 6,
Further comprising a brake pedal for switching between a stop state in which the brake mechanism is turned ON and the clutch mechanism is OFF and a traveling state in which the brake mechanism is OFF and the clutch mechanism is ON,
Wherein the brake mechanism and the clutch mechanism are interlockingly connected to the brake pedal such that the brake pedal is in a stopped state in preference to the transmission pedal by a stop operation of the brake pedal.
KR1020107018255A 2008-03-05 2009-02-05 Riding-type rice transplanter KR101590434B1 (en)

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JP5497268B2 (en) 2014-05-21
CN104110492A (en) 2014-10-22
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KR20160015401A (en) 2016-02-12
CN104604398A (en) 2015-05-13

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