KR100722485B1 - Power transmission structure for small tillers - Google Patents

Power transmission structure for small tillers Download PDF

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Publication number
KR100722485B1
KR100722485B1 KR20037001686A KR20037001686A KR100722485B1 KR 100722485 B1 KR100722485 B1 KR 100722485B1 KR 20037001686 A KR20037001686 A KR 20037001686A KR 20037001686 A KR20037001686 A KR 20037001686A KR 100722485 B1 KR100722485 B1 KR 100722485B1
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KR
South Korea
Prior art keywords
shaft
mission case
tillage
drive shaft
gear
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Application number
KR20037001686A
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Korean (ko)
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KR20030023737A (en
Inventor
히로미츠 하야다
Original Assignee
얀마-노키 가부시키가이샤
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Priority to JP2000241733A priority Critical patent/JP2002052945A/en
Priority to JPJP-P-2000-00241733 priority
Application filed by 얀마-노키 가부시키가이샤 filed Critical 얀마-노키 가부시키가이샤
Priority to PCT/JP2000/008979 priority patent/WO2002011519A1/en
Publication of KR20030023737A publication Critical patent/KR20030023737A/en
Application granted granted Critical
Publication of KR100722485B1 publication Critical patent/KR100722485B1/en

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/082Transmissions; Gearings; Power distribution
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/02Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on horizontal shaft transverse to direction of travel
    • A01B33/027Operator supported tools, e.g. using a harness for supporting the tool or power unit

Abstract

A power transmission structure capable of attempting miniaturization and weight reduction of small tillers. A small tiller comprising a transmission case bent substantially in a doglegged shape as seen in a side view and interlocked with a prime mover, a traveling section disposed in the front of the transmission case, and a tilling section disposed in the rear of the transmission case, wherein the drive shaft of the transmission case is interlocked with the output shaft of the prime mover through a speed change mechanism, and an axle for driving the traveling section and a tilling shaft for driving the tilling section are individually interlocked with the drive shaft of the transmission case, so that the power from the prime mover is transmitted from a single drive shaft of the transmission case to the traveling section and tilling section.

Description

    Power Transmission Structure for Small Cultivators {POWER TRANSMISSION STRUCTURE FOR SMALL TILLERS}             

The present invention relates to a power transmission structure of a small cultivator.

Conventional compact cultivator interlocks the mission case bent in a rough shape when viewed from the side of the prime mover, and attaches the axle extending in the left and right width directions to the front end of the mission case so as to be rotatable, and to the left and right ends of the axle. While the wheels are attached to form a running part, the tilling shafts extending in the left and right width directions are rotatably attached to the rear end of the mission case, and the plurality of tilling tanks extending in the semi-radial direction to the outer peripheral portion of the tilling shafts. The tilling work unit was configured by attaching.

In addition, the conventional compact tiller is equipped with a driving drive shaft for driving the driving unit and a drive shaft for tillage work for driving the tilling work unit in the mission case. In addition, the conventional compact cultivator is connected to the output shaft of the prime mover through a transmission mechanism in which the driving shaft for driving and the driving shaft for tillage work are arranged on the upper part of the mission case.

In addition, the mission case is composed of a case structure of the traveling side extending from the bend to an inclination form of the front and rear high, and a case structure of the tilling work side extending from the bend to an inclination of the front height. In addition, the angle between the traveling part side case structure and the tilling work side case structure was bent to an acute angle below the right angle.

However, since the conventional compact tiller is provided with a driving drive shaft for driving the driving unit and a driving shaft for tillage work for driving the tilling work unit, the output shaft of the prime mover is interlocked to each drive shaft through a transmission mechanism. In addition, the power transmission structure from the output shaft of the prime mover to each drive shaft is complicated, there is a disadvantage that can not perform the assembly work or maintenance smoothly.

In addition, since the conventional small cultivator arranges the transmission mechanism on the upper part of the mission case, it is difficult to reduce the height of the small cultivator by reducing the vehicle body height.

In addition, since the conventional compact tiller is formed by bending the mission case in an acute state, the center position of the compact tiller is high, which makes it difficult to stably run in a paddy field.

Therefore, the present invention interlocks the input shaft of the mission case bent in a rough shape when viewed from the side of the prime mover, arranges the driving part on the front part of the mission case, and tills the rear part of the mission case. In the compact cultivator formed by arranging a work part, an axle and a tiller for driving the driving part to the drive shaft of the mission case are connected to an input shaft connected to the output shaft of the prime mover by a transmission mechanism. A tillage work side virtually configured to connect the tillage shafts for driving the work unit, respectively, and transmit the power of the prime mover from one drive shaft of the mission case to the travel part and the tillage work portion, and connect the axis of the drive shaft and the axis of the tillage shaft. The input shaft and the transmission mechanism are located near the center line and at a position ahead of the shaft center of the drive shaft. He said.

In addition, the present invention is a mission case that is curved in the shape of approximately 보면 when viewed from the side of the angle of at least a right angle to the case structure of the running part side extending in the form of inclination of the front and rear from the bend and the tilling work side of the case structure extending in the form of the inclination of the front and rear from the bend. It was made by refraction while maintaining.

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1 is a left side view showing a compact cultivator according to the present invention.

2 is a plan view showing the compact tiller;

Figure 3 is a cross-sectional plan view showing the inside of the mission case.

Figure 4 is a left side view showing the inside of the mission case.

5 is a plan sectional view showing a transmission mechanism.

6 is a plan sectional view showing a running part.

7 is a plan sectional view showing the tilling working part;

The compact cultivator according to the present invention is connected to the prime mover by connecting the mission case bent in a rough shape in a side view, arranging the driving part in the front part of the mission case, and at the rear part of the mission case. Expose the tillage work unit.

In addition, the small cultivator according to the present invention interlocks the drive shaft of the mission case to the output shaft of the prime mover through a transmission mechanism, and interlocks the axle for driving the driving unit to the drive shaft of the mission case and the tilling shaft for driving the tilling work unit. .

And the power of the prime mover is transmitted to the drive shaft of the mission case, and then directly transmitted from one drive shaft of the mission case to the axle of the running portion and the tilling shaft of the tillage work portion.

Therefore, the compact cultivator according to the present invention can simplify the structure for power transmission, can improve the assembly workability and maintenance of the mission case, it is possible to miniaturize the small cultivator itself as well as the mission case.

In addition, the compact cultivator according to the present invention arranges the drive shaft in the bent portion of the mission case, and the transmission mechanism in the front position of the drive shaft.

Accordingly, the compact cultivator according to the present invention can lower the height of the mission case, and can lower the height of the compact cultivator itself, thereby miniaturizing the compact cultivator itself, and at the same time, lowering the center position, thereby driving safety. Can be improved.

In addition, the compact cultivator according to the present invention is bent by maintaining the angle or more angles at the right angle of the running unit side case structure extending from the bent portion in the form of inclination of the front and rear high and the tilling work side side structure extending from the bend in the form of inclination of the front and rear low. Configure it.

Therefore, the compact cultivator according to the present invention can lower the height of the mission case, and can lower the height of the compact cultivator itself, thereby minimizing the light weight of the compact cultivator itself, and at the same time, lowering the center position, so that the driving stability is reduced. Can be improved.

A specific embodiment of the present invention will be described as follows.

As shown in FIGS. 1 and 2, the compact cultivator 1 according to the present invention, at the same time, arranges the prime mover 3 at the front position of the mission case 2 which is formed to be bent in a rough shape, While the traveling part 4 is arranged in the front lower part of the mission case 2, the tilling work part 5 is provided in the rear lower part of the mission case 2, and also the mission case is provided. The operation part 6 is arrange | positioned at the upper position of (2).

As shown in Figs. 1 and 2, the prime mover unit 3 attaches the prime mover mounting base 7 to the lower side of the front side of the mission case 2, and the prime mover 8 is mounted on the prime mover mounting base 7 as shown in Figs. The fuel tank 9 is attached to the upper part of the prime mover 8. 10 in the figure is a bumper which also serves as the front weight.

As shown in FIGS. 1 and 2, the running part 4 pivotally attaches the axle 11 extending in the left and right width directions to the front lower side of the mission case 2, and the left and right ends of the axle 11 are rotated. The wheels 12 are attached to each side. The detailed structure of the traveling part 4 will be described later.

As shown in FIGS. 1 and 2, the tillage work part 5 pivotally attaches the tillage shaft 13 extending in the left and right width directions to the rear lower portion of the mission case 2, and the tillage shaft 13 is rotated. The tillage cover 14 interlockingly connected to the tillage tank 14 extending in the semi-radial direction, and covering the upper direction of the rotational track 15 of the tillage tank 14 in the middle part of the mission case 2. ), Attaching the center of gravity adjustment bar 17 to the rear end of the tillage cover 16 so as to be elevated, and at the rear end of the tillage cover 16 Install the prevention cover 18 vertically. 19 is a support bracket for supporting the adjustment bar 17. The detailed structure of the tillage work part 5 will be described later.

As shown in FIGS. 1 and 2, the operation part 6 attaches the handle 20 having a substantially 양 shape in an inclined shape to the front and rear heights when viewed from the plane of the middle part of the mission case 2, and the upper end part of the handle 20. The deadman clutch lever 21 is disposed at the same time, and the shift lever 22 is disposed in the form of an inclined front and rear height in front of the handle 20.

The shift lever 22 attaches a substantially L-shaped shift arm 23 to the proximal end, and rotates back and forth in a state in which the distal end of the shift arm 23 extends in the left and right width directions in the middle of the mission case 2. Attached to the right end of the shift lever supporting shaft 24 so as to be rotatable, and to allow shift operation along the guide groove 26 formed in the guide plate 25 attached to the upper part of the mission case 2. do.

As shown in FIGS. 1 and 4, the mission case 2 is a tilling portion extending from the bend portion 27 in the form of an inclination of the front and rear heights and in the form of an inclination of the front and the bottom from the bent portion 27 and the bent portion 27. It consists of the work part case structure 29, and the running part case structure 28 and the tillage work part side case structure 29 are bent in the shape of an approximate angle when it is bent and maintained at an angle of approximately right angle or more.

The mission case 2 is rotatably attached to the front upper portion of the curved portion 27 in a state in which the input shaft 30 extending in the left and right width directions is protruded in the left direction of the mission case 2. 30 is interlocked with the output shaft (not shown) of the prime mover 8 via the electric belt 33 in the belt cover 31. 4, 32 is an electric pulley attached to the left end of the input shaft 30, 33 is an electric belt for interlocking connection between the output shaft of the prime mover 8 and the input shaft 30 of the mission case (2).

The mission case 2 rotatably attaches the drive shaft 34 extending in the left and right width directions to the bend portion 27, and the drive shaft 34 has an input shaft 30 linked to an output shaft of the prime mover 8. Interlocking through the sphere (35).

The transmission mechanism 35 is a bend portion 27 of the mission case 2, and is accommodated and disposed at the front position of the drive shaft 34, and is configured as follows.

That is, the transmission mechanism 35 has a low speed forward mode for advancing the gas at a low speed on the front side upper portion of the bend portion 27 of the mission case 2 as shown in FIGS. 5) Left and right shifting tillage shifter 36 for switching to the tillage operation mode for driving the vehicle, and high speed forward mode for advancing the aircraft at high speed and forward and backward shifter 37 for switching to the low speed reverse mode for reversing the aircraft at low speed. It is attached so as to be movable left and right in a state extending in the width direction, and engaging grooves 38 and 39 are formed at the right ends of the shifters 36 and 37, respectively, and the engaging grooves 38 and 39 are formed. ), One side of the front and rear pairs of coupling parts 40 and 41 formed by pressing the outer periphery of the shifting arm 23 at the proximal end of the shifting lever 22 is coupled to either side. In the drawings, 42 and 43 are detent balls formed on the outer peripheral portions of both shifters 36 and 37, and 44 and 45 are detent balls engaged with the dedents 42 and 43.

Then, when the shifting mechanism 35 operates the shift lever 22 upward along the guide groove 26, the engaging portion 40 of the front side of the shifting arm 23 of the shifting lever 22 travels. When coupled to the locking groove portion 38 of the tillage shifter 36, the shift lever 22 is operated in the right direction along the guide grooves 26, whereby the traveling tiller shifter 36 moves in the right direction. In addition, when the shift lever 22 is operated downward along the guide groove 26, the engaging portion 41 of the shift arm 23 rear side of the shift lever 22 moves the engaging groove portion 39 of the shift 37 forward and backward. When the shift lever 22 is operated in the left and right width directions along the guide grooves 26, the forward and backward shifts 37 are moved in the left and right width directions.

On the other hand, the transmission mechanism 35 is splined to the intermediate part of the input shaft 30 so that the electric gear 46 can slide in the left-right width direction.

The traveling tillage shift 36 attaches the connecting hook 47 downwardly to the middle part, inserts the leading end of the connecting hook 47 into the interlocking groove 48 formed in the outer peripheral part of the electric gear 46, The electric gear 46 moves along the input shaft 30 in association with the traveling tiller shifter 36, and the forward and reverse shift gear 49 is rotatably inserted in the middle portion of the forward and backward shifter 37, The front and rear switching gear 49 and the electric gear 46 are engaged.

In addition, the transmission mechanism 35 is rotatably attached to the transmission shaft 50 extending in the left and right width direction at the front side lower portion of the bent portion 27 of the mission case 2, and the small portion in the middle of the transmission shaft 50. While forming the diameter driving motor gear 51, the low speed gear 52 is attached to the right end of the transmission shaft 50, and further has the same diameter as the low speed gear 52 on the right end of the transmission shaft 50. The large diameter cultivation electric gear 53 is fitted to be rotatable.

The low speed gear 52 and the large diameter tillage electric gear 53 can be meshed with the electric gear 46 splined to the input shaft 30.

In addition, the transmission mechanism 35 attaches the large-diameter traveling transmission gear 54 to the middle portion of the drive shaft 34 and pivotally mounts the tilling drive gear 55 to the right side of the drive shaft 34. The small diameter tillage electric gear 56 is attached to the right end of the tillage drive gear 55, and the driving drive gear 57 is attached to the left end of the drive shaft 34.

The large-diameter traveling electric gear 54 is engaged with the small-diameter traveling electric gear 51 formed on the transmission shaft 50, and the forward and rearward shifting gear 49 is inserted into the forward and backward shift 37 so as to be movable. And the small diameter tillage electric gear 56 is engaged with the large diameter tillage electric gear 53 attached to the shifting shaft 50, and the driving drive gear 57 is provided with The interlocking connection to the axle 11 through the driving electric chain 58, and the tillage drive gear 55 is interlocked to the tilling shaft 13 of the tillage working part 5 through the tilling electric chain 59. do.

The shifting mechanism 35 is configured as described above and shifted as follows by the shifting operation of the shifting lever 22.

That is, when the transmission mechanism 35 is in a neutral state in which the shift lever 22 is in an upright position, the input shaft 30 interlocked with the prime mover 8 is idle, and the traveling part 4 and the tilling work part 5 are rotated. Is stopped.                 

In addition, the transmission mechanism 35 enters the low speed forward mode once the shift lever 22 is moved upward along the guide groove 26 and then moved to the right side. In this low speed forward mode, the traveling till shifter 36 The electric gear 46 moves to the right along the input shaft 30 so that the electric gear 46 and the low speed gear 52 are engaged with each other, and the power of the prime mover 8 is transmitted through the input shaft 30. It is transmitted to the low-speed gear 52 from the gear 46, and is transmitted to the small-diameter driving motor gear 51 from the low-speed gear 52 through the transmission shaft 50, and the small-diameter driving motor gear 51 ) Is transmitted from the large diameter driving motor gear 54 to the driving drive gear 57 through the drive shaft 34, and for traveling from the driving drive gear 57. It is transmitted to the axle 11 of the traveling part 4 through the electric chain 58, the axle ( 11) It rotates at low speed, and the gas moves forward at low speed. In this low speed forward mode, the electric gear 46 and the large diameter tillage electric gear 53 do not mesh, and thus the tilling work part 5 stops.

In addition, the transmission mechanism 35 is in the tillage operation mode by moving the shift lever 22 to the right along the guide groove 26. In this tillage operation mode, the electric gear 46 is accompanied by the traveling tiller shifter 36. Moving to the right along the input shaft 30, the electric gear 46 and the low speed gear 52 and the large-diameter cultivated electric gear 53 is engaged, the power of the prime mover 8 is the input shaft 30 Is transmitted from the electric gear 46 to the low speed gear 52 and the large diameter tillage electric gear 53, and the power transmitted to the low speed gear 52 is similar to the low speed forward mode described above. Shift shaft 50, small diameter driving gear 51, large diameter driving gear 54, drive shaft 34, driving gear 57, driving transmission chain 58, axle 11 The axle 11 of the traveling part 4 rotates at a low speed so that the gas is advanced at a low speed, and is transmitted to the large diameter tillage electric gear 53. The supplied power is transmitted from the large-diameter tillage electric gear 53 to the small-diameter tillage electric gear 56, and is transmitted from the small-diameter tillage electric gear 56 to the tillage drive gear 55, wherein the tillage drive gear ( 55 is transmitted to the tillage shaft 13 of the tillage work part 5 through the tilling electric chain 59, and the tillage axis 13 of the tillage work part 5 rotates to perform tillage work.

In addition, the transmission mechanism 35 becomes a high speed forward mode by moving the shift lever 22 downward along the guide groove 26 and then to the left, and in this high speed forward mode, the forward and backward shifter 37 The forward and backward switching gear 49 moves to the left side, and the forward and backward switching gear 49 and the large diameter driving electric gear 54 are directly engaged (that is, without deceleration by the low speed gear 52). The power of the prime mover 8 is transmitted from the electric gear 46 to the forward and backward switching gear 49 through the input shaft 30, and the large diameter traveling electric gear 54 from the forward and backward switching gear 49. Is transmitted to the driving gear 57 through the drive shaft 34 from the large diameter driving gear gear 54, and travels from the driving gear gear 57 through the driving transmission chain 58. To the axle 11 of the section 4, the axle 11 of the traveling section 4 rotates at a high speed, The body advances at high speed. In this high speed forward mode, the electric gear 46 and the large diameter tillage electric gear 53 are not engaged with each other, and thus the tillage work part 5 is stopped.

On the other hand, the transmission mechanism 35 becomes a low speed reverse mode once the shift lever 22 is moved downward along the guide groove 26 and then moved to the right side. In such a low speed reverse mode, the shift lever 22 37), the forward and backward switching gear 49 is moved to the right, and the forward and backward switching gear 49 and the low speed gear 52 are engaged with each other, so that the power of the prime mover 8 is transmitted through the input shaft 30. It is transmitted from the electric gear 46 to the forward and backward switching gear 49, and decelerated and transmitted from the forward and backward switching gear 49 to the low speed gear 52 (i.e., from the electric gear 46 to the low speed gear 52). The furnace transmits power in a state inverted from the low-speed forward / backward mode), and is transmitted from the low speed gear 52 to the small diameter driving motor gear 51 through the transmission shaft 50, and the small diameter driving motor gear ( 51 to the large-diameter driving motor gear 54, and from the large-diameter driving motor gear 54 The driving shaft 34 is transmitted to the driving drive gear 57, and the driving driving gear 57 is transferred to the axle 11 of the driving unit 4 through the driving electric chain 58. The axle 11 of 4) rotates at low speed and the gas reverses at low speed. In such a low speed reverse mode, the electric gear 46 and the large diameter tillage electric gear 53 are not engaged with each other, and thus the tillage work part 5 is stopped.

As described above, the compact cultivator 1 according to the present embodiment connects the drive shaft 34 of the mission case 2 to the output shaft of the prime mover 8 through the transmission mechanism 35, and the mission case. Since the axle 12 for driving the traveling part 4 and the tilling shaft 13 for driving the tillage work part 5 are respectively interlocked with the drive shaft 34 of (2), the prime mover 8 Power is transmitted to the drive shaft 34 of the mission case 2, and then from one drive shaft 34 to the axle 11 of the traveling section 4 and the tilling shaft 13 of the tillage work section 5. By being directly transmitted, the structure for power transmission is simplified, thereby improving the assembly workability and maintenance of the mission case 2, and at the same time, not only the mission case 2 but also the small cultivator 1 Small size and light weight can be achieved.

In particular, the small cultivator 1 according to the present embodiment arranges the drive shaft 34 in the bend portion 27 of the mission case 2, and also the transmission mechanism 35 in the front position of the drive shaft 34. As a result, the height of the mission case 2 can be lowered, and the height of the body of the compact tiller 1 can be lowered, so that the compacter weight of the compact tiller 1 can be reduced and the center position is lowered. Stability can be improved.

In addition, the compact cultivator 1 according to the present exemplary embodiment has an inclination shape of the front and rear low sides from the traveling part side case structure 28 and the bend portion 27 in which the mission case 2 extends from the bend portion 27 to the front and rear high slopes. The cultivation side side structure 29 of the tilling work side which is extended to the main body is configured to be bent and maintained at an angle of at least a right angle, and as shown in FIG. Since the angle A becomes a right angle or a right angle or more between the tilling work side virtual center line L2 connecting L1) and the axis of the drive shaft 34 and the axis of the tillage shaft 13, the mission case Since the height of (2) can be lowered and the height of the body of the small cultivator 1 can be lowered, the compact and lighter of the compact cultivator 1 can be reduced in size, and the center position is lowered, thereby improving driving stability. have.

In particular, the small cultivator 1 according to the present embodiment is located near the tilling work side virtual center line L2 connecting the shaft center of the drive shaft 34 and the shaft center of the tillage shaft 13, and is further forward than the shaft center of the drive shaft 34. Since the transmission mechanism 35 is disposed at the position, the transmission mechanism 35 can be miniaturized, thereby lowering the height of the mission case 2 and lowering the height of the compact tiller 1. Therefore, it is possible to reduce the weight of the compact cultivator 1 and at the same time to reduce the center position, it is possible to improve the running stability.

As shown in Figs. 3, 4 and 6, the traveling part 4 arranges the axle 11 at the lower end of the traveling part side case structure 28 of the mission case 2, and the axle 11 has a mission. It consists of a pair of left and right left and right axles 60 and 61 which are rotatably supported by the left and right lower ends of the running body side case structure 28 of the case 2, between the left and right axles 60 and 61. Integrate differential gear mechanism 62.

The differential gear mechanism 62 is rotatably mounted on the left axle 60 with the driven driven gear 63 wound around the traveling transmission chain 58, and a pair of front and rear on the right side of the driven driven gear 63. The bearing bodies 64 and 64 are attached, and the support shaft 65 is rotatably provided between the bearing bodies 64 and 64, and the said support shaft 65 is rotated. A pair of pinion gears (bevel gears) 66 and 67, and a pair of left and right side gears (bevel gears) 68 at the proximal ends of the left and right axles 60 and 61, respectively. (69) are attached to each other, and the side gears 68, 69 and the pinion gears 66, 67 are engaged. 70 is a guide link inscribed to the outer circumferential surface of the axis itself 64, 64,

Here, the driven driven gear 63 is rotatably supported by the boss portion 71 of the side gear 68 attached to the proximal end of the left axle 60. As a result, the driving driven gear 63 can firmly support the load of the driving transmission chain 58 by the boss portion 71 of the side gear 68, and prevent backlash or slip of the driven driven gear 63. It is possible to prevent and ensure smooth running.

The differential gear mechanism 62 has a differential stop mechanism 72, which is spaced apart from the lock claw 73 in the circumferential direction on the inner circumference of the driven driven gear 63. At the same time, the splice fitting of the differential stop actuator 74 coupled to the lock claw 73 to the middle part of the left axle 60 so as to be movable in the horizontal direction, and the differential stop actuator ( Attaching the distal end of the operation arm 75 to the outer circumference of the 74, attaching the proximal end of the operation arm 75 to the middle part of the operation bar 76 attached to the mission case 2 so as to be movable left and right. The operation lever 77 is attached to the tip of the operation lever 76. In the figure, 78 is a bias spring.

The tillage work part 5 is the tillage tank forward rotation mechanism 79 and the tillage tank 14 which reversely drive the tillage tank 14 by forward rotation as shown in FIG. 3, FIG. 4, and FIG. The counter reverse rotation mechanism 80 is provided, and the tillage tank 14 of the left and right outer parts is rotated forward by the tillage tank forward rotation mechanism 79, while the tillage tank 14 of the center part is the tillage tank reverse rotation mechanism. Reverse rotation by 80 allows for efficient tillage of the rice fields.

The tillage tank forward rotation mechanism 79 rotatably supports the tillage shaft 13 extending in the left and right width directions at the lower end portion of the case structure 29 of the tillage work part side of the mission case 2, and the tillage shaft 13 At the same time, the forward-rotating tillage driven gear 81 wound around the tilling transmission chain 59 is attached to the center of the tilling, and the claw support cylinders 82 having cylindrical shapes are provided at the left and right ends of the tilling shaft 13. (83) is attached, and the cultivation tank 14 dedicated for rotation is detachably attached to the outer peripheral parts of the said claw support cylinders 82 and 83 in a radial direction. In the figure, 84 is a bracket, 85 is a fixing bolt nut.

The tillage tank reverse rotation mechanism 80 maintains a constant interval along the tillage axis 13 with the reverse rotation shaft 86 extending in the left and right width directions to the lower end of the case structure 29 of the tillage work part side of the mission case 2. It is rotatably supported, and the reverse rotation tillage driven gear 87 which wound the tilling electric chain 59 was attached to the said reverse rotation shaft 86, and left and right both ends of the said reverse rotation tillage driven gear 87 left and right. A pair of intermediate drive gears 88 and 89 are attached, and a pair of reverse claw axes 90 and 91 are pivotably pivoted on the tilling axis 13. The intermediate rotating gears 92 and 93 are attached to the inner peripheral parts of the reverse rotating blade shafts 90 and 91, respectively, and the intermediate driven gears 92 and 93 and the intermediate driving gear ( 88, 89, and splines so that the cylindrical claw support cylinders 94 and 95 can be moved in the left and right width directions, respectively, on the outer circumferential portions of the reverse rotating blade shafts 90 and 91, respectively. Fitting, said closure supporting tube (94), and removably attached to the plowing action 14 of the reverse rotation only in the outer peripheral portion (95) in the radial direction. In the figure, 96 is a bracket, 97 is a fixing bolt and nut, and 98 is a tension roller.

Here, the claw support cylinders 94 and 95 are splined with the reverse rotation blade shafts 90 and 91 at the vertically downward position of the tilling tank 14. That is, the spline grooves 99 formed on the outer circumferential portions of the reverse rotation blade shafts 90 and 91 are extended to the vertically downward position of the tilling tank 14. This can prevent the backlash or slip of the reverse rotation blade shaft 90, 91, it is possible to perform a smooth tillage operation by the tillage tank (14).

In addition, as the spline grooves 99 of the reverse rotating blade shafts 90 and 91 are connected to the vertically downward position of the tillage tank 14, the claw support cylinders 94 and 95 also move outwardly. In this case, the rotary tilling tank 14 is also disposed at an outward position of the gas, and the tank at the tip of the rotary tilling tank 14 is offset in the inner direction of the gas so that the tilling operation is performed well. Do it.

The present invention according to claim 1 is connected to an input shaft connected to the output shaft of the prime mover, the drive shaft disposed in the bent portion of the mission case through the transmission mechanism, and the axle and tilling for driving the driving unit in the drive shaft of the mission case The tillage shaft for driving the work unit is connected to each other, and the power of the prime mover is configured to transmit the driving force and the tillage work part from one drive shaft of the mission case, and the tillage work connecting the shaft center of the drive shaft and the shaft axis of the tillage shaft. Since the input shaft and the transmission mechanism are arranged in the vicinity of the side virtual center line and further ahead of the shaft center of the drive shaft, the power of the prime mover is transmitted to the drive shaft of the mission case, and then from one drive shaft of the mission case, Directly transmitted to the tillage shaft of the tillage work unit, the structure for power transmission is simple. Screen and, at the same time can improve the assembling operability and maintainability (maintenance) of the transmission case, the transmission case but also it is possible to reduce the size and weight of the small tiller.

In addition, since the drive shaft is disposed in the bent portion of the mission case, and the transmission mechanism is disposed at the front position of the drive shaft, the height of the mission case can be lowered and the height of the body of the small cultivator can be lowered. It is possible to reduce the weight and at the same time lower the center position, thereby improving driving stability.

In addition, the present invention according to claim 2 is a right angle or more of the traveling part side case structure extending the mission case in the inclined form of the front and rear heights from the bent portion and the tilling work side case structure extending in the inclined form of the front and rear heights from the bent portion. It is possible to reduce the height of the mission case and to reduce the height of the body of the small tiller, thereby miniaturizing the compact tiller and lowering the center position. It can improve the stability.

Claims (3)

  1. When viewed from the side of the prime mover, the input shaft of the mission case bent in a rough shape is interlocked, and the traveling part is disposed on the front part of the mission case, and the tilling work part is disposed on the rear part of the mission case. In the compact tiller,
     To the input shaft connected to the output shaft of the prime mover, the drive shaft disposed in the bent portion of the mission case is interlocked through the transmission mechanism, and the axle for driving the driving unit to the drive shaft of the mission case and the tilling shaft for driving the tilling work unit, respectively. And transfers the power of the prime mover from one drive shaft of the mission case to the traveling part and the tilling work part,
    A power transmission structure for a small tiller, wherein an input shaft and a transmission mechanism are disposed in the vicinity of the virtual center line of the tilling work side connecting the shaft center of the drive shaft and the shaft center of the tillage shaft, and at a position ahead of the shaft center of the drive shaft.
  2. [Claim 3] The side view of claim 1 further comprises: a mission case bent in a へ shape from the side, a traveling part side casing extending from the bend to an inclination of the front and rear heights, and a tilling work side casing structure extending from the bend to an inclination of the front and rear heights. Power transmission structure of a small cultivator, characterized in that it is configured to bend while maintaining an angle above the right angle.
  3. delete
KR20037001686A 2000-08-09 2000-12-18 Power transmission structure for small tillers KR100722485B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000241733A JP2002052945A (en) 2000-08-09 2000-08-09 Power transmission structure for compact tiller
JPJP-P-2000-00241733 2000-08-09
PCT/JP2000/008979 WO2002011519A1 (en) 2000-08-09 2000-12-18 Power transmission structure for small tillers

Publications (2)

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KR20030023737A KR20030023737A (en) 2003-03-19
KR100722485B1 true KR100722485B1 (en) 2007-05-29

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KR20037001686A KR100722485B1 (en) 2000-08-09 2000-12-18 Power transmission structure for small tillers

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JP (1) JP2002052945A (en)
KR (1) KR100722485B1 (en)
CN (1) CN1259813C (en)
WO (1) WO2002011519A1 (en)

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Publication number Priority date Publication date Assignee Title
JP2004224138A (en) * 2003-01-21 2004-08-12 Honda Motor Co Ltd Transmission for working machine
JP5038342B2 (en) * 2009-02-18 2012-10-03 株式会社クボタ working machine
CN103814635A (en) * 2009-12-23 2014-05-28 隆鑫通用动力股份有限公司 Mounting structure of tilling cutter of mini tiller
CN102720804B (en) * 2012-06-19 2014-09-24 陈相贤 Forward plowing/backward rolling independent-drive variable-speed steel plate gearbox assembly for micro-farming machine
CN103283322B (en) * 2013-05-02 2015-08-26 浙江亚特电器有限公司 A kind of rotovator
CN105052263A (en) * 2015-09-09 2015-11-18 陈爱明 Ditcher
CN105922865B (en) * 2016-05-20 2018-07-10 山东润沣农业机械有限公司 A kind of multifunctional agricultural working truck
CN106717159B (en) * 2016-12-30 2018-12-28 重庆市永川区望城机械厂 Multifunctional small tiller

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JPH08317701A (en) * 1995-05-24 1996-12-03 Yanmar Agricult Equip Co Ltd Farm working machine

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US2491892A (en) * 1944-11-29 1949-12-20 Walter E Claus Rotary soil tiller
JPS6393627A (en) * 1986-10-06 1988-04-23 Honda Motor Co Ltd Cultivator
JPH07309145A (en) * 1994-05-17 1995-11-28 Honda Motor Co Ltd Transmission disposing structure in working vehicle

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH08317701A (en) * 1995-05-24 1996-12-03 Yanmar Agricult Equip Co Ltd Farm working machine

Non-Patent Citations (1)

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Title
일본공개신용신안공보 특개평08-317701호

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CN1259813C (en) 2006-06-21
JP2002052945A (en) 2002-02-19
CN1454049A (en) 2003-11-05
WO2002011519A1 (en) 2002-02-14
KR20030023737A (en) 2003-03-19

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