JP2011019442A - Walking-type agricultural implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a walking-type agricultural implement facilitating the cleaning operation of a tilling tine, and enabling the cleaning operation securing the safety to be carried out. <P>SOLUTION: The walking-type agricultural implement is constituted as follows. A neutral state is set to the axle of a wheel in a speed-changing transmission part as the operation position of an operation lever, and a mud-removing position 17b for setting the transmission state of reverse rotation reverse to the transmission state of tilling rotation to the tilling shaft of the tilling tine is formed. As a result, grass and mud stuck while coiling around the shaft in the tilling rotation direction can be removed easily by the reverse rotation. Further, because the manual operation is not required, the cleaning operation of the tilling tine is simplified and the cleaning operation securing the safety is enabled. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a walk-type farm work machine such as a management machine, and more particularly, an operation lever for setting and changing a transmission state of a transmission device interposed between an engine and an axle of a drive wheel and a drive shaft of a tilling blade. The present invention relates to a walking type agricultural working machine.

  2. Description of the Related Art Conventionally, some walking-type agricultural machines such as management machines include a power transmission device that can switch a transmission path to be output to an axle and a tilling shaft. This shifts a shift gear, which is slidable in the axial direction on the transmission shaft, by operating an operation lever connected by a shift arm, a shift rod, etc. The transmission path can be switched to a path that drives only the axle, a path that drives the axle and tilling shaft, a path that drives only the tilling axis, and a neutral state where neither the axle nor the tilling shaft is driven. (See Patent Document 1).

JP 2006-81519 A

  By the way, when a plowing farming machine drives a tilling shaft to rotate a tilling blade (rotary) and performs a tilling operation, grass and mud are often stuck around the tilling blade. The manual cleaning of the grass and mud stuck to the tillage blade is time consuming and not only gives fatigue to the worker but also lacks consideration for safety. there were.

  Therefore, an object of the present invention is to provide a walking type farm working machine that can simplify the cleaning operation of the tilling blade and can perform the cleaning operation ensuring safety.

The present invention according to claim 1 (see, for example, FIGS. 1 to 7), between the engine (13) and the axle (15) of the drive wheel (11) and the drive shaft (31) of the tillage blade (32, 132). An operation lever (17) for setting and changing the transmission state of the transmission device (40) interposed in the vehicle, and based on the operation position of the operation lever (17), the rotational transmission state of the drive wheel (11) relative to the axle (15) In the walking type agricultural machine (1, 100) that can set the neutral state and can set the transmission state of the tillage rotation with respect to the drive shaft (31) of the tillage blade (32, 132),
As the operation position of the operation lever (17), the transmission device (40) is set to the neutral state with respect to the axle (15) of the drive wheel (11), and the tillage blades (32, 132) are driven. The shaft (31) is provided with mud dropping positions (17b, 17d, 17f) for setting the transmission state of the reverse rotation and the transmission state of the tillage rotation,
It exists in the walk type farm work machine (1,100) characterized by this.

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, this is for convenience for making an understanding of invention easy, and has no influence on the structure of a claim. It is not a thing.

  According to the first aspect of the present invention, as the operation position of the operation lever, the transmission device is set in a neutral state with respect to the axle of the drive wheel, and the transmission state of tillage rotation with respect to the drive shaft of the tillage blade is reversed. Since the mud dropping position for setting the transmission state of rotation is provided, grass and mud stuck while winding in the tillage rotation direction can be easily dropped by reverse rotation. Moreover, since it is possible to eliminate the need to perform manual work, the cleaning work of the tilling blade can be simplified and the cleaning work can be ensured with safety.

The side view which shows the walk type farm work machine which concerns on 1st Embodiment. The top view of the lever guide explaining a normal rotation tillage position and a reverse mud dropping position. It is a development view showing the inside of the mission case, (a) is during normal tillage, (b) is during reverse mud dropping. The top view of the lever guide explaining a reverse rotation tillage position and a normal rotation mud dropping position. A development view showing the inside of the mission case, (a) during reverse tillage and (b) during forward rotation mud dropping. The side view which shows the walking type agricultural working machine which concerns on 2nd Embodiment. The top view of the lever guide which concerns on 2nd Embodiment.

<First Embodiment>
A first embodiment according to the present invention will be described below with reference to FIGS. 1 to 5 along the drawings.

  As shown in FIG. 1, the walking type farm working machine 1 is configured integrally with a traveling unit 10 and a tilling unit 30 with the tilling unit 30 disposed on the rear side. The traveling unit 10 has a pair of traveling wheels (driving wheels) 11 on an axle 15 extending in the left-right direction, and an engine 13 and a speed change transmission described later on an airframe 12 supported by the traveling wheels 11. (Transmission device) 40 (see FIG. 3) is disposed, and a fuel tank 14 is supported on the engine 13. A muffler (not shown) that performs decompression / noise reduction during exhaust in the engine 13 is disposed on the side of the engine 13 and the fuel tank 14, and the muffler is covered with a muffler cover 25.

  Further, from the rear of the machine body 12, an operation lever 17 for performing a speed change operation on the transmission transmission section 40 (setting and changing the transmission state of the transmission transmission section 40) and a handle frame 18 for operating the traveling direction of the machine body 12 are provided on the rear side. It is arrange | positioned so that it may extend. Further, a shift guide panel 23 formed with a guide groove 21 (see FIGS. 2 and 4) for guiding the operation path of the operation lever 17 is disposed in the lower rear portion of the fuel tank 14. It is configured to cover.

  The handle frame 18 includes an inclined portion 18a extending obliquely upward and rearward from the rear portion of the machine body 12, a horizontal portion 18b which is bent from the middle of the inclined portion 18a and is in a horizontal state substantially parallel to the field, and the horizontal portion 18b. And a handle 18c formed at the rearmost end. The handle 18c is formed in a long shape extending in the left-right width direction in the rear view so that the operator can hold it with one or both hands.

  In addition, a clutch handle 29 supported so as to be able to come into contact with and separate from the handle 18c is disposed at a transition portion from the inclined portion 18a to the horizontal portion 18b. The clutch handle 29 rotates from a horizontal position overlapping the handle 18c (a position where the clutch is engaged) to a position rising at an angle of about 60 ° with respect to the handle 18c (a position where the clutch is disconnected). Is obtained (indicated by an arrow X in FIG. 1).

  An operation panel 16 provided with a differential lock lever 24 that is operated in the front-rear direction of the machine body 12 is attached to the upper right side of the handle frame 18. The operation panel 16 is provided with a stop button 28 of the engine 13, a throttle lever 27, and the like. The differential lock lever 24 is operated when a differential device (not shown) is switched between an operating state and an inactive state so that when one of the traveling wheels 11 slips in a place where the driving force is difficult to be transmitted, The traveling wheels 11 and 11 are directly connected (that is, the differential drive by the left and right traveling wheels 11 and 11 is locked) so that the driving force is transmitted well to the field. The stop button 28 functions to forcibly stop the engine 13 unconditionally when pressed down regardless of whether the clutch handle 29 is connected or disconnected. The rotation speed of the engine 13 is adjusted in the throttle lever 27 by a wire (not shown) connected to the throttle lever 27, and the traveling speed of the walking farm machine 1 is adjusted.

  On the other hand, the cultivating unit 30 includes a cultivating shaft (driving shaft) 31 extending in the left-right direction from the speed change transmission unit 40, a cultivating claw (cultivating blade) 32 that is fixed to the cultivating shaft 31 and cultivates the field, A tilling cover 33 that covers the upper portion of the tilling claw 32 and a rear cover 34 that is attached to the rear of the tilling cover 33 are provided. A large number of tilling claws 32 are mounted around the tilling shaft 31 and have a symmetrical shape in the front-rear direction when viewed from the side. When the tilling shaft 31 is rotated forward (ω1 direction) or reversely rotated (ω2 direction). Is also available. The tilling shaft 31 and the tilling claws 32 are rotationally driven by the output of the engine 13 that is transmitted through a transmission gear transmission 40, which will be described in detail later.

Here, the above-described shift guide panel 23 will be described in more detail. As shown in FIGS. 2 and 4, the transmission guide panel 23 has an operation surface (upper surface) having a continuous guide groove 21 that branches in the vertical and horizontal directions to guide the operation lever 17. ) 23a. In the guide groove 21, the position “R” of the operation lever 17 is “reverse position (reverse rotation of the axle 15)”, and the position “F ₁ ” is “forward position (forward rotation of the axle 15)”. Yes, position “N” is “neutral position (neutral state of axle 15)”, and position “F ₂ ” is “high speed forward position (high speed forward rotation of axle 15)”. Each position of the operation lever 17 with respect to the lateral direction is an effective position even if the operation lever 17 is moved up and down based on the position of the shifter shaft (not shown). Further, in the guide groove 21, the lower row in the figure is a row in which the tilling shaft 31 rotates forward (rotation in the ω1 direction in FIG. 1), and the upper row in the figure is the tilling shaft 31. Is a row rotating in the reverse direction (rotating in the direction ω2 in FIG. 1).

Therefore, the position “17a” of the operation lever 17 shown in FIG. 2 is “forward rotation (forward rotation) position during forward rotation (F ₁ )” (forward rotation tillage) and “forward forward rotation tillage position”. The position “17c” of the operating lever 17 shown is “reverse rotation position of forward travel (F ₁ )” and “forward reverse rotation tillage position (during reverse rotation tillage)”. The position “17b” of the operation lever 17 shown in FIG. 2 is the “reverse rotation position of neutral (N)” and the “reversed rotation mud dropping position”, and the position “17d” of the operation lever 17 shown in FIG. "Is a reverse rotation plowing position of neutral (N)" and is a "move removal position of normal rotation".

  Next, the corresponding state of each position of the operation lever 17 will be described while the shift transmission unit 40 will be described in detail with reference to FIGS. 3 and 5. 3A is a view showing the state of the operation lever 17 at the position “17a”, and FIG. 3B is a view showing the state of the operation lever 17 at the position “17b”. FIG. 5A is a diagram illustrating a state of the operation lever 17 at a position “17c”, and FIG. 5B is a diagram illustrating a state of the operation lever 17 at a position “17d”.

  As shown in FIG. 3 (a), the speed change transmission unit 40 interposed between the engine 13 and the axle 15 of the traveling wheel 11 and the tilling shaft 31 of the tilling claw 32 has a transmission case 45, and the transmission A support hole 45a for slidably supporting a shifter shaft (not shown) is provided in the upper portion of the case 45 in the figure. Further, the transmission case 45 rotatably supports the first shaft 41, the second shaft 42, and the third shaft 43. These first to third shafts 41, 42, and 43 are shown in an expanded manner in FIGS. 3 and 5, but are actually in a positional relationship that forms a substantially triangular apex in a side view, and will be described in detail later. In addition, the gears 51 and 61 on the first shaft 41 can mesh with the gears 53 and 62 on the second shaft 42 and can also mesh with the gears 55 and 64 on the third shaft 43.

  The transmission transmission unit 40 includes, on these first to third shafts 41, 42, 43, an axle transmission system 50 that drives the axle 15 of the drive wheel 11 to change speed, and a tilling shaft that drives the tillage shaft 31 of the tillage claw 32 at different speeds. And a transmission system 60. The first shaft 41 is connected to the output shaft of the engine 13 via a belt and a pulley (not shown), and on the first shaft 41, the gears 51 and 52 of the axle transmission system 50 and the tillage shaft transmission are provided. A gear 61 of the system 60 is provided. Of these, the gear 52 is rotatably supported by the first shaft 41 and is positioned with respect to the axial direction. The gear 51 and the gear 61 are engaged with the first shaft 41 in the rotational direction. And is slidable in the axial direction. That is, the gear 51 is driven to move in the axial direction via a shifter shaft (not shown) in conjunction with the left-right direction (see FIG. 2) of the operation lever 17, and the gear 61 is moved in the vertical direction ( It is driven to move in the axial direction via a shifter shaft (not shown) in conjunction with (see FIG. 2). The gear 52 is configured so that the tooth surface 52a is always meshed with a tooth surface 53b of a gear 53 described later and the gear 51 can be meshed with the internal tooth 52b.

  On the second shaft 42, gears 53 and 56 of the axle transmission system 50, gears 62 and 63 of the tillage shaft transmission system 60, and a sprocket 67 are disposed. The gears 53 and 56 are integrally fixed to the second shaft 42, and the gears 62 and 63 and the sprocket 67 are integrally formed and are rotatably supported with respect to the second shaft 42. And it is positioned in the axial direction.

  The tooth surface 53a of the gear 53 can mesh with the tooth surface 51a of the gear 51 that can move in the axial direction. Further, the tooth surface 53b of the gear 53 is always meshed with the tooth surface 52a of the gear 52 and is always meshed with a tooth surface 54a of the gear 54 described later. Furthermore, the tooth surface 56a of the gear 56 is always meshed with a tooth surface 57a of the gear 57 described later. On the other hand, the tooth surface 62a of the gear 62 can mesh with the tooth surface 61a of the gear 61 that can move in the axial direction. Further, the tooth surface 63a of the gear 63 is always meshed with a tooth surface 65a of the gear 65 described later. A chain 58 is engaged with the sprocket 67, and the chain 58 is interlocked with the tilling shaft 31 via a differential mechanism (not shown).

  On the third shaft 43, gears 54, 55, 57 of the axle transmission system 50 and sprocket 58 and gears 64, 65 of the tillage shaft transmission system 60 are disposed. The gear 55 is integrally fixed to the gear 54, and the gears 54 and 55 are rotatably supported with respect to the third shaft 43 and are positioned in the axial direction. Further, the gear 57 is integrally fixed to the third shaft 43, and the sprocket 58 is also fixed to the third shaft 43 integrally. On the other hand, the gear 64 is integrally fixed to the gear 65, and the gears 64 and 65 are rotatably supported with respect to the third shaft 43 and are positioned in the axial direction.

  The tooth surface 55a of the gear 55 can mesh with the tooth surface 51a of the gear 51 that can move in the axial direction. Further, the tooth surface 54 a of the gear 54 is always meshed with the tooth surface 53 b of the gear 53. Furthermore, the tooth surface 57a of the gear 57 is always meshed with the tooth surface 56a of the gear 56. A chain 59 is engaged with the sprocket 58, and the chain 59 is engaged with a sprocket 71 of the differential mechanism 70 and is interlocked with the left and right axles 15 via the differential mechanism 70. On the other hand, the tooth surface 64a of the gear 64 can mesh with the tooth surface 61a of the gear 61 that can move in the axial direction. Further, the tooth surface 65a of the gear 65 is always meshed with the tooth surface 63a of the gear 63.

  The speed change transmission unit 40 configured as described above is in the axle transmission system 50 when the operation lever 17 is set to the position “R” (see FIGS. 2 and 4), and the gear 51 and the gear 55 are connected to each other. The reverse rotation is once input to the gear 53 through the gear 54, and the second shaft 42, the gear 56, the gear 57, the third shaft 43, the sprocket 58, the chain 59, the sprocket 71, and the differential mechanism 70 are sequentially connected thereafter. Thus, the reverse rotation is transmitted to the axle 15. Thereby, the walking type agricultural working machine 1 travels backward.

When the operation lever 17 is between a position “R” and a position “F ₁ ” described later, that is, a position where the operation lever 17 can be operated in the vertical direction (see FIGS. 2 and 4), the gear 51 is It is located between the axial direction of the gear 55 and the gear 53, that is, does not mesh with either gear, and the subsequent second shaft 42, gear 56, gear 57, third shaft 43, sprocket 58, chain 59, sprocket No rotation is transmitted to 71, the differential mechanism 70, and the axle 15, and a neutral state is established. As a result, the walking farm machine 1 stops traveling.

Further, when the operation lever 17 is set to the position “F ₁ ” (see FIGS. 2 and 4), as shown in FIGS. 3 (a) and 5 (a), the axle transmission system 50 has a gear. 51 and the gear 53 mesh with each other, and forward rotation is input to the gear 53, and then the second shaft 42, the gear 56, the gear 57, the third shaft 43, the sprocket 58, the chain 59, the sprocket 71, and the differential mechanism 70 in that order. The forward rotation is transmitted to the axle 15 via. Thereby, the walking type farm working machine 1 travels forward.

  When the operation lever 17 is set to the position “N” (see FIGS. 2 and 4), the gear 51 is connected between the gear 53 and the gear 52 as shown in FIGS. 3 (b) and 5 (b). Since it is located between the axial directions, that is, it does not mesh with any gear, and especially the transmission relationship with the gear 53 is cut, the subsequent second shaft 42, gear 56, gear 57, third shaft 43, sprocket 58, the chain 59, the sprocket 71, the differential mechanism 70, and the axle 15 are not transmitted with rotation, and are in a neutral state. As a result, the walking farm machine 1 stops traveling.

Further, when the operation lever 17 is set to the position “F ₂ ” (see FIGS. 2 and 4), for example, as shown in FIG. 3A, in the axle transmission system 50, the gear 51 is connected to the gear 52. The forward rotation that is meshed with the internal teeth 52b and accelerated is input to the gear 53, and the second shaft 42, gear 56, gear 57, third shaft 43, sprocket 58, chain 59, sprocket 71, Through the mechanism 70, the accelerated forward rotation is transmitted to the axle 15. Thereby, the walking type farm working machine 1 travels at a high speed.

  On the other hand, when the operation lever 17 is in the lower row as shown in the positions “17a” and “17d” (see FIGS. 2 and 4), for example, as shown in FIGS. 3 (a) and 5 (b). Thus, in the tillage shaft transmission system 60, the gear 61 meshes with the tooth surface 64a of the gear 64, the gear 65 to which the gear 64 is fixed rotates reversely, and the tooth surface 65a of the gear 65 is engaged with the tooth surface 63a. Forward rotation is transmitted to the gear 63 meshing with the gear 63, and forward rotation is transmitted to the tilling shaft 31 from the sprocket 67 fixed integrally with the gear 63 via the chain 68. Thereby, the walking type farm working machine 1 performs tilling with the tilling claws 32 rotated forward.

  When the operation lever 17 is arranged in the middle row in the vertical direction (see FIGS. 2 and 4), the gear 61 is between the gear 64 and the gear 62 in the axial direction, and rotates counter to the gear 63. To be in position. That is, the gear 61 does not mesh with any gear, and particularly the transmission relationship with the gears 62 and 63 is cut, so that the rotation is not transmitted from the sprocket 67 and the chain 68 to the tilling shaft 31, and so-called neutral state is established. Become. As a result, the walking farm machine 1 stops the rotation of the tilling claws 32.

  Then, when the operation lever 17 is placed in an upper row such as the position “17b” and the position “17c” (see FIGS. 2 and 4), for example, as shown in FIGS. 3B and 5A. Thus, in the tillage shaft transmission system 60, the gear 61 meshes with the tooth surface 62a of the gear 52, the reverse rotation is transmitted to the gear 62 and the gear 63, and is fixed integrally with the gears 62 and 63. The reverse rotation is transmitted from the existing sprocket 67 to the tilling shaft 31 through the chain 68. Thereby, the walking type farm working machine 1 performs tilling with the tilling claws 32 rotated in the reverse direction.

  As described above, the walking agricultural work machine 1 sets the rotational transmission state of the traveling wheel 11 relative to the axle 15 (that is, the forward rotation or reverse rotation of the axle 15) and the neutral state based on the operation position of the operation lever 17. In addition, the transmission state of the tillage rotation of the tillage claw 32 with respect to the tillage shaft 31 (that is, forward rotation or reverse rotation of the tillage shaft 31) can be set.

  Therefore, for example, when the operator operates the operation lever 17 to the position “17a” shown in FIG. 2, the walking type farm work machine 1 travels forward and the forward rotation tillage with the tillage claw 32 rotated forward is rotated. Do. In this state, if grass or mud sticks to the tilling claw 32, for example, the operator operates the operation lever 17 as indicated by the arrow A, and operates to the “mud dropping position” which is the position “17b”. Then, the axle 15 of the walking type farm working machine 1 is in a neutral state, and the tilling claw 32 is rotated in the reverse direction. That is, the walking-type farm work machine 1 can be rotated in the reverse rotation that is the reverse of the direction in which the tilling claw 32 is rotated on the spot, and is attached to the cultivation claw 32 while being wound in the rotation (forward) rotation direction. It can be easily removed by reversing grass and mud. Further, since it is possible to eliminate the need for manual work, the cleaning work of the tilling claws 32 can be simplified and the cleaning work can be ensured for safety.

  On the other hand, for example, when the operator operates the operation lever 17 to the position “17c” shown in FIG. 4, the walking-type farm work machine 1 travels forward, and the reverse rotation tillage is performed by rotating the tillage claw 32 in the reverse direction. Do. In this state, if grass or mud sticks to the tilling claw 32, for example, the operator operates the operation lever 17 as indicated by an arrow B, and operates the “mud dropping position” which is the position “17d”. Then, the axle 15 of the walking farm machine 1 is in a neutral state, and the tilling claw 32 is rotated forward. That is, the walking-type farm work machine 1 can be rotated in the forward rotation that is the reverse of the direction in which the tilling claw 32 is rotated on the spot, and is stuck to the cultivation claw 32 while being wound in the rotation (reverse) rotation direction. It can be easily removed by reversing the grass and mud. Further, since it is possible to eliminate the need for manual work, the cleaning work of the tilling claws 32 can be simplified and the cleaning work can be ensured for safety.

  The relationship between the operating position of the operating lever 17 and the transmission state of the transmission gear transmission 40 described above is in accordance with the shifter shaft and gear arrangement in the present embodiment, and is not limited to this. By changing the design of the gear arrangement, for example, it is possible to change to the “mud drop position” where the tilling claw 32 rotates in the reverse direction from the position “17a” to the position “17d”, or for example, from the position “17c” to the position “17b”. It can also be considered that the “mud dropping position” is such that the claw 32 rotates in reverse.

<Second Embodiment>
Next, a second embodiment obtained by partially changing the first embodiment will be described with reference to FIGS. In addition, in description of the walk-type farm work machine 100 which concerns on this 2nd Embodiment, the same code | symbol is attached | subjected to the part similar to the walk-type farm work machine 1 which concerns on the said 1st Embodiment, and the description is given. Omitted.

  The walking farm machine 100 according to the second embodiment is configured to be smaller and less expensive than the walking farm machine 1 according to the first embodiment, and in particular, the traveling unit 10. On the other hand, the tillage part 30 is arranged on the front side. Further, a tilling rotary (cultivating blade) 132 is attached to the tilling shaft 31 instead of the tilling claws 32. A gauge ring 135 for adjusting the tilling depth is disposed in front of the tilling rotary 132, and the height of the gauge ring 135, that is, the tilling depth can be adjusted stepwise by the lever 136. Has been.

  As shown in FIG. 7, the shift guide panel 123 in the walking agricultural machine 100 has an operation surface 123 a having a guide groove 121 for operating and guiding the operation lever 17. In the guide groove 121, the position “R” of the operation lever 17 is “reverse position (reverse rotation of the axle 15)”, and the position “start” is a “neutral position (neutral of the axle 15) at which the engine 13 can be started. State) ”, the position“ F ”is“ forward position (forward rotation of the axle 15) ”, and the position“ plow ”is“ forward rotation position of the tillage shaft 31 in forward travel (during forward rotation tillage) ”. (The ω1 direction in FIG. 6), and the position “in-situ tillage” is “the forward rotation position of the tillage shaft 31 in neutral (N)”.

  Note that the position “N (movement)” is a “neutral position (neutral state of the axle 15)”, but is in the gear train in the transmission section 40 and closer to the axle 15 than the position “start”. This is the position where the meshing of the gear is released, that is, the dragging of the gear train in the speed change transmission unit 40 is reduced, the left and right traveling wheels 11 and 11 are lightened, and the movement of the walking agricultural machine 100 is lightened. Easy to position.

  The guide groove 121 of the speed change guide panel 123 is provided with a position “reverse” on the left side of the position “N (moving)” in the drawing, and the position “reverse” is “neutral (N)”. Is the reverse rotation position of the tillage shaft 31 (in the ω2 direction in FIG. 6).

  Therefore, for example, when the operator operates the operation lever 17 at the position “17e” shown in FIG. 7 and performs forward forward tillage with the walking type farm working machine 100, grass and mud are stuck on the tilling rotary 132. Then, for example, the operator operates the operation lever 17 as indicated by an arrow C, and operates to the position “reverse (muddy soil dropping position)” which is the position “17f”. Then, the axle 15 of the walking type agricultural working machine 100 is in a neutral state, and the tilling rotary 132 is rotated in the reverse direction. In other words, the walking type farm working machine 100 can be rotated in the reverse direction that is the reverse of the direction in which the rotary rotary 132 is rotated on the spot, and is attached to the rotary rotary 132 while being wound in the rotational (forward) rotation direction. It can be easily removed by reversing grass and mud. Moreover, since it is possible to eliminate the need for manual work, the cleaning work of the tilling rotary 132 can be simplified and the cleaning work can be ensured with safety.

  In addition, the structure of the speed change transmission part 40 of the walk type farm work machine 100 which concerns on this 2nd Embodiment can change a design variously, The speed change of the walk type farm work machine 1 which concerns on the said 1st Embodiment. Since a simple configuration of the transmission unit 40 is sufficient, a description thereof is omitted.

  In the first and second embodiments described above, the “muddy soil removal position” where the axle 15 is in the neutral state and the tillage shaft 31 is reverse to the tillage rotation is the operation position of the operation lever 17. It may be provided at such a position, and is not limited to the embodiment described above.

1 Walking-type farm work machine 11 Drive wheel (running wheel)
13 Engine 15 Axle 17 Operation lever 17b Mud drop position 17d Mud drop position 17f Mud drop position (position "reverse")
31 Drive shaft (cultivation shaft)
32 Cultivation blade (cultivation claw)
40 Transmission device (transmission transmission)
100 walking type farm working machine 132 tillage blade (cultivation rotary)

Claims (1)

An operating lever for setting and changing the transmission state of a transmission device interposed between the engine and the axle of the driving wheel and the driving shaft of the tillage blade, and based on the operating position of the operating lever, the rotational transmission state of the driving wheel with respect to the axle And in the walking type agricultural working machine that can set the neutral state, and can set the transmission state of the rotation of the tillage with respect to the drive shaft of the tillage blade,
As the operation position of the operation lever, the neutral state is set in the transmission device with respect to the axle of the drive wheel, and the transmission state of the tillage rotation with respect to the drive shaft of the tillage blade is a reverse rotation transmission state. Set a mud drop position to set
A walking type agricultural machine characterized by that.

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