JP5802056B2 - Walking type management machine - Google Patents

Description

  The present invention relates to a walking-type management machine provided with a rotary tiller device behind a mission case, and more particularly to a structure around the handle.

  In general, it is known that a walk-type management machine is used for plowing work, uprighting work, etc. in a farm field. In this walk-type management machine, depending on the position of the rotary plowing device, a rotary plowing device is placed behind the mission case. There are rear rotary type walking type management machines connected to each other and axle type walking type management machines in which a rotary tiller is integrally formed with the axle.

  In the above-mentioned walking type management machine, since an operation handle for an operator to operate the aircraft is formed to protrude upward at the rear, it is required to store this handle in a compact manner at the time of shipment or carrying. Yes.

  Therefore, conventionally, in the above-described axle-type walking type management machine, there has been devised that the handle is stored compactly by rotating the operation handle to the rear of the machine body and folding it (Patent Document 1). And Patent Document 2).

JP 2001-322572 A Japanese Utility Model Publication No. 57-120180

  On the other hand, in the case of a rear rotary type walking type management machine, because the rotary tiller is behind the mission case, the rotary tiller and the operation handle interfere with each other even if the operation handle is rotated and stored. Unlike the axle-type walking type management machine described above, the operation handle cannot be rotated and stored backward, and the operation handle is detached and stored.

  For this reason, there is a risk of losing screws and nuts that are mounting members when the operation handle is removed, and it is necessary to adjust various operating tools attached to the operation handle when attaching the operation handle to the management machine again. It took a lot of assembly work.

  In addition, the size of the management machine when storing the operation handle is strictly limited so that more management machines can be loaded onto trucks and containers at the time of shipment. Even if it is rotated and stored, the long operation handle protrudes from the size limit in the longitudinal direction of the machine body, and eventually it is necessary to remove the operation handle and ship the management machine.

  Therefore, the present invention attaches the operation handle to the protruding portion of the handle frame protruding from the cover that covers the transmission case, and rotates the operation handle downward from the working position so that it can be fixed at the storage position close to the rotary tillage device. It aims at providing the walk type management machine which solved the above-mentioned subject by doing.

Oite wheel supported transmission case to (3) (2), rotary plow device disposed behind the transmission case (2) and (19), the walk-behind tiller provided with a transmission case ( 2) a handle frame (16) extending upward from the rear and an operation handle (17) attached to the handle frame (16), the handle frame (16) being connected to the transmission case. (2) as to protrude from the cover member for covering the rear side (11b) of times of the operation handle to the projecting portion of the handle frame protruding from the cover body (11b) (16) (16a) (17) mounting portion having a kinematic fulcrum (16b) is provided, below the operation handle (17), working position to be used when working with the (P1), from the working position (P1) Rotates towards the Upon fixably provided with accommodation position close to the rotary cultivator (19) (P2), the tip of the operating handle in the working position of said operating handle (17) (P1) (17 ) The side (L) connecting the farm ground contact point of the wheel (3) and the rotary shaft (20) of the rotary tiller (19) and the tip end where the operator grips the operation handle (17) in front view when the operating handle (17) as the drawer line (H) is substantially parallel to the intermediate portion from the (M) is bent downward to configure, and fixed in the storage position of the manipulation handle (17) (P1) Further, the midway part (M), which is the bending point of the operation handle (17), is positioned substantially above the rotary tiller (19), the operation handle (17) is the transmission case (2), and the rotary tiller (19). , and Li Especially setting the position of the cover the mounting portion so as to substantially along the (26) (16b) is characterized.

  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 it has an influence on the structure of a claim. It is not a thing.

According to the first aspect of the present invention , in the walking type management machine including the mission case supported by the wheels and the rotary tiller disposed at the rear of the mission case, from the mission case toward the upper rear part. An extended handle frame; and an operation handle attached to the handle frame. The handle frame projects from a cover body that covers the rear side of the transmission case, and projects from the cover body. An attachment portion having a pivot point of the operation handle is provided on the projecting portion of the handle frame, and the operation handle is rotated at a work position used during work and downward from the work position. In the work position of the operation handle, the handle can be fixed to the storage position close to Operate so that the line connecting the ground contact point of the wheel and the rotary shaft of the rotary cultivator in the side view of the tip end of the crop handle is parallel to the line from which the operator pulls the tip part holding the control handle forward. When the handle is bent downward from the midway, and when the operation handle is fixed in the storage position, the midway part, which is the bending point of the operation handle, is positioned substantially above the rotary tiller, and the operation handle is By setting the position of the mounting portion so as to substantially follow the case, the rotary tiller, and the rear cover, the height position of the management machine in the stored state can be lowered. Further, it is possible to form the overall length of the operation handle, the rotation range can be made a large, in particular housing the operating handle limit is also shortened the length of the tight body front-rear direction, such as during packaging can do. Moreover, when Ru is inclined distal end side of the operating handle to the middle part or al bottom side of the operating handle, the distal end side of the operation handle (17) field ground point and the rotary cultivator wheel (3) in a side view of (19) The line (L) connecting the rotary shaft (20) and the line from which the operator grips the operation handle at the operation position of the operation handle and pulling it forward are substantially parallel , and the operation handle is When fixed in the stowed position, the middle part, which is the bending point of the operating handle, is positioned substantially above the rotary tiller, and the operating handle is substantially along the transmission case, rotary tiller, and rear cover. position by setting the, in the rotary tilling, with posture operator grips the operating handle becomes easy, upon receiving the operation handle mission Case, the rotary cultivator, and substantially along can be shaped to the rear cover, it is possible to shorten the body length. Further, the management machine can be easily put into the storage state only by rotating the operation handle to the storage position.

The perspective view at the time of the operation | work of the walk type management machine which concerns on embodiment of this invention. The side view at the time of work of the walk type management machine concerning the embodiment of the present invention. The top view at the time of the operation | work of the walk type management machine which concerns on embodiment of this invention. The expansion perspective view of the operation handle of the walk type management machine concerning the embodiment of the present invention. The expansion perspective view of the handle frame part of the walk type management machine concerning the embodiment of the present invention. The expansion perspective view of the handle frame part of the walk type management machine concerning the embodiment of the present invention. The perspective view at the time of accommodation of the walk type management machine concerning the embodiment of the present invention. The side view at the time of accommodation of the walk type management machine concerning the embodiment of the present invention. The top view at the time of accommodation of the walk type management machine concerning the embodiment of the present invention. The expansion perspective view of the tilling device at the time of storage of the walk type management machine concerning the embodiment of the present invention. The expansion perspective view of the tilling device at the time of storage of the walk type management machine concerning the embodiment of the present invention. The side view at the time of accommodation of the walk type management machine concerning the embodiment of the present invention.

  Hereinafter, an embodiment of a walking type management machine according to the present invention will be described with reference to FIGS. The direction in the following description is based on the worker who is working with the walking type management machine.

[Configuration of rear rotary type walking management machine]
The configuration of the rear rotary walking type management machine 1 will be described. As shown in FIGS. 1 to 3, the rear rotary walking type management machine 1 mainly includes a main body part 4 of the rear rotary type walking management machine for running on the farm field, and the like for plowing the farm field. It is comprised from the rotary tilling apparatus 19 as a tilling part, and the operation part 18 for operating the rear rotary type walk type | mold management machine 1. FIG. Hereinafter, each component will be described.

First, the main body part 4 of the rear rotary type walking type management machine is supported by a pair of left and right wheels 3 as drive wheels via an axle 5, and is attached to the transmission case 2 and the transmission case 2. The engine 7 is mounted on the frame 6 and is disposed in front of the mission case 2, and a fuel tank (not shown) disposed on the engine 7.
In addition, H shown in FIG. 1 is a shift lever.

  In addition, a tension pulley clutch 9 for connecting and disconnecting power transmission from the engine to the transmission is provided on the left side surface of the main body 4 of the rear rotary walking-type management machine 1 while being covered with a cover. A muffler 10 for discharging exhaust gas from the engine 7 is provided above the tension pulley clutch 9 so as to be covered with a cover.

  The upper side of the engine 7 is covered with a bonnet 11a, and the fuel tank and the transmission case 2 are covered with a body cover 11b which is a cover body from the front side to the rear side. Further, as shown in FIG. 2, the bonnet 11a and the body cover 11b are attached adjacent to the rear rotary walking-type management machine 1, and are formed so as to be integrated into a substantially arc shape when viewed from the side. Yes.

  In addition, a hole for projecting a fuel supply port for supplying fuel to the fuel tank is provided on one end side of the body cover 11b adjacent to the bonnet 11a. A fuel filler cap 12 is detachably attached. A main transmission guide 13 for shifting the rear rotary walking type management machine 1 and the like is formed in the body cover 11b at the rear of the fuel filler opening by cutting out the swing region of the main transmission lever 14. In addition, a rectangular opening 15 is formed behind the main transmission guide 13. A handle frame 16 for attaching an operation handle 17 is formed protruding from the opening 15. Details of the handle frame 16 will be described later.

  Next, the rotary cultivating device 19 as a cultivating part of the rear rotary walking type management machine has a rotor claw 21 pivotally supported on the rotary shaft 20 and a rotary cover 22 covering the top of the rotor claw 21. At the same time, it is connected to the rear of the mission case 2. The rotary tiller 19 is configured to cultivate the field by rotating the rotor claws 21 with the power of the engine 7.

  Further, the rotary cover 22 is provided with a tail sled 23 that regulates the tilling depth of the rotary tiller 19 by sliding on the field so that the vertical position can be changed. Is also provided with a resistance plate 25 for generating running resistance and suppressing the dashing phenomenon of the machine body. Further, a rear cover 26 is attached to the rear end portion of the rotary cover 22, and a tail wheel 27 for movement supported by a support arm 24 is provided on the rear cover 26.

  The operation unit 18 of the rear rotary walking type management machine 1 is configured to have an operation handle 17 formed by being bent into a substantially square shape when viewed from the side. It is rotatably attached to an attachment portion 16b provided on the frame 16.

  An operation handle position changing lever 29 for changing the position of the operation handle is attached to the left side 17L of the operation handle. As shown in FIG. 4, a differential gear lock lever 32 that locks the differential gear is attached to the right side 17 </ b> R of the operation handle in order to improve the turning performance of the rear rotary walking type management machine 1. In front of the differential gear lock lever 32, a deadman clutch 31 is supported on the left and right sides (17R, 17L) of the operation handle in order to securely stop the walking type management machine 1 in the event of an emergency during work. It has been.

  In front of the deadman clutch 31, an attachment plate 33, to which an emergency stop switch 33a for emergency stop of the rear rotary walking type management machine 1 is attached, is attached to the inside of the operation handle 17 formed in a loop shape. A throttle control lever 30 for adjusting the number of revolutions of the engine 7 is attached in front of the attachment plate 33.

[Rotating mechanism and fixing mechanism of operation handle]
Next, a rotation mechanism and a fixing mechanism of the operation handle of the rear rotary walking type management machine 1 according to the present embodiment will be described. As shown in FIGS. 5 and 6, the handle frame 16 is formed to extend from the transmission case 2 toward the rear upper portion, and protrudes from the body cover 11 b that covers the rear side of the transmission case 2. have.

The protruding portion 16a is formed on the body cover 11b and protrudes from the opening 15 to the outside of the cover, and the operating handle 17 is rotatably supported by a shaft (not shown) as a support member. Is formed.
Further, the distal end side of the operation handle 17 is bent downward from the middle part M of the operation handle 17.
The operation handle 17 is attached to the handle frame 16 at a position as stable as possible, that is, as low as possible so as not to obstruct the main transmission lever 14.
For details, as shown in FIG. 2, a line L connecting the ground contact point of the wheel 3 and the rotary shaft 20 of the rotary tiller 19, that is, the state where the tiller is deepest tilled and the operator handles the operation handle 17 As shown in FIG. 8, the operation handle 17 is positioned at a position where the line H where the tip end portion for gripping the handle is pulled out forward is substantially parallel and the attachment point of the operation handle 17 to the handle frame 16 is below the line H. Is set to a position where the bending point of the operation handle 17 is substantially above the rotary tiller 19.
Therefore, the point to be bent downward from the middle part M of the operation handle 17 is necessarily specified.

The handle frame 16 is formed in a substantially U shape in plan view with one surface of the projecting portion 16a being open, and the open surface is disposed so as to face the rear of the machine body on the rotary tiller 19 side. Further, on the inner upper surface of the handle frame 16, a distal end portion of a stopper pin, which is a fixing member for positioning the rotation position (position P1 in the figure) of the operation handle 17 and which will be described later, is fitted. A handle position fixing plate 37 provided with a plurality of holes h1 and h2 for fitting is attached.
Note that the distal end side of the operation handle 17 is bent downward from the middle part M of the operation handle 17, so that in a rotary tillage operation, the substantially farm scene and the distal end side of the operation handle 17 are parallel to each other. Thus, the operator can easily perform the posture of gripping the operation handle 17.

  Further, a part of the handle position fixing plate 37 extends toward the above-described open surface, and an operation handle 17 is provided on a portion corresponding to the upper surface portion of the handle frame 16 (hereinafter simply referred to as an upper surface portion). A plurality of working position adjustment holes h1,... For fixing the operating handle 17 are provided at the working position P1 used at the time of work, and extend toward the open surface. In the extended portion 37a provided, the storage position for rotating downward from the work position P1 and fixing the operation handle 17 to the storage position P2 (position of FIGS. 7 to 12) close to the rotary tillage device. A fixing hole h2 is provided.

  In addition, a restriction pin 39 that is a restriction member is inserted into and removed from the upper corner of the open surface of the handle frame 16 so as to be positioned between the upper surface portion of the handle position fixing plate 37 and the tongue-shaped extending portion 37a. The control pin 39 is freely attached, and the rotation range of the operation handle 17 is restricted by the restriction pin 39 so that the operation handle 17 does not turn to the storage position side during operation.

  Further, below the open surface of the handle frame 16, metal bars having a circular cross section, which is a reinforcing member 41 for increasing the strength of the handle frame 16, are attached to both wall surfaces inside the handle frame 16. In addition, a wire harness 42 connected to an operation tool such as the throttle control lever 30 or the emergency stop switch 33a is wired from the inside through the substantially U-shaped open surface of the handle frame, and each wire harness 42 is The metal rod 41 mounted in the handle frame is wired so as to pass separately on the upper side and the lower side.

  A stopper in which a stopper pin (not shown) as a fixing member for fixing the operation handle 17 is accommodated in the operation handle attachment portion 17a formed to attach the operation handle 17 to the attachment portion 16b of the handle frame 16. A mounting bracket (stopper pin support member) 35 that is a stopper pin mounting member that supports the pin case 36 is mounted.

  Next, the stopper pin fitted into the hole of the handle position fixing plate 37 will be described in detail. The stopper pin for positioning the rotation position of the operation handle 17 is housed in such a manner that the tip of the stopper pin protrudes from the stopper pin case 36. When the operation handle position change lever 29 attached to the left side 17L of the operation handle is gripped, the wire 28 connecting the stopper pin in the stopper pin case 36 and the operation handle position change lever 29 is inserted into the stopper pin case 36. The stopper pin is pulled and the entire stopper pin is stored in the stopper pin case. Further, when the operation handle position changing lever 29 is released, the wire is loosened, and the tip of the stopper pin protrudes from the stopper pin case 36.

  By the way, as shown in FIGS. 5 to 9, the stopper pin case 36 is positioned on the outer peripheral side of the protruding portion 16a of the handle frame 16 so that the left and right operation handles 17L , 17R so as to be sandwiched between them.

  More specifically, a cylindrical stopper pin case (stopper pin) 36 is supported between the left and right operation handles 17L and 17R by a stopper pin support member 35. The stopper pin support member is interposed between the left and right operation handles. A pair of support plates 35a that are installed and fitted with a cylindrical stopper pin case 36 in the middle thereof, and a cover member 35b that covers the space between the pair of support plates 35a from above.

  The pair of support plates 35a support the upper end portion and the lower end portion of the stopper pin case 36, respectively, and the cover member 35b covers the space between the support plates from above so that the operator can adjust the position of the handle. The mechanism is invisible.

  2, the upper surface of the cover member 35b is inclined from the support plate 35a1 on the distal end side of the operation handle 17 toward the support plate 35a2 on the base side (handle frame side) of the operation handle 17. The inclination angle of the upper surface portion is adjusted so as to be substantially flush with the connection surface 16c of the handle frame 16 connected to the cover member 35b when the operation handle 17 is at the working position P1. Yes.

  That is, the cover member 35b has an inclined surface for improving the visibility of the operation panel provided on the rear rotary walking type management machine 1 of the operator who is the operator when the operation handle 17 is set to the work position P1. Are formed in a triangular shape in side view. Further, in order to match the outer peripheral surface of the protrusion 16a of the handle frame 16 with the inclined surface formed on the cover member 35b, inclined surfaces having a triangular shape in plan view are formed on both sides of the cover member 35b in contact with the operation handle 17. Is formed.

  Next, the operation of the handle frame 16 and the operation handle 17 having the operation handle turning mechanism and the fixing mechanism will be described.

  When working on the field, the operator holds the operation handle position changing lever 29 to release the fitting between the stopper pin and the work position adjusting hole h1 of the handle position fixing plate 37, and a plurality of the work position adjusting holes h1 are provided. ..., the working position P1 that is most easily worked is adjusted.

  At this time, the rotation range of the operation handle 17 is divided by the restriction pin 39 into a work position adjustment area where the work position adjustment hole h1 is located and a storage area where a storage position fixing hole h2 described later is located. When the operator adjusts the work position P1 of the operation handle 17, the operator rotates the operation handle 17 in the work position adjustment area instead of the storage area to adjust the work position P1. When the adjustment of the work position P1 is finished, the operation handle 17 is held and the work on the farm field is started.

On the other hand, when the work in the field is finished, the worker loads the management machine 1 on a truck or the like. At this time, in order to store the operation handle 17, the operator pulls out the regulation pin 39 attached to the handle frame 16 and then holds the operation handle position change lever 29 to release the operation handle. After rotating from the working position downward to move to the storage position P2 close to the rotary tiller 19, the operation handle position change lever 29 is released and the stopper pin is fitted into the storage position fixing hole h2. Thus, the position of the operation handle 17 is fixed to the storage position P2.
When the operation handle 17 is set to the storage position P2, the distal end side of the operation handle 17 is bent downward from the midway part M and has a shape substantially along the rear cover 26, so that the overall length of the machine body can be shortened.
In addition, by having devices such as the tail sled 23 and the tail wheel 27 in the rotation trajectory for moving the operation handle 17 from the work position to the storage position, when the operation handle 17 is rotated, these devices are obstructive. It is attached to the rotary tiller 19 so that it does not become.

  As described above, when the operator stores the operation handle 17, as shown in FIGS. 7 to 11, the operation handle 17 is directed downward and rearward from the handle frame mounting portion 16b and covers the rotary tiller 19 so as to cover the rotary tiller 19. Stored close to the device. At that time, devices provided on the rotary cover 22 such as the tail sled 23 and the tail wheel 27 are accommodated in the loop-shaped operation handle 17.

  As described above, in the rear rotary walking type management machine 1 according to the embodiment of the present invention, the steering height position of the operation handle 17 is stored by being rotated to the rotary tiller 19 side. The height position of the management machine 1 can be lowered.

  Further, the handle frame 16 to which the operation handle 17 is attached is extended until it protrudes from the body cover 11b, and the operation handle 17 is attached to the protruding portion 16a protruding from the body cover 11b. In addition, the rotation range can be increased.

  For example, the operation handle 17 can be accommodated by shortening the length in the front-rear direction of the airframe, which is severely restricted during packaging. Furthermore, the rear rotary walking type management machine can be easily put into the storage state only by rotating the operation handle 17 to the storage position P2.

  In addition, the handle frame 16 is formed in a substantially U shape, and the handle position fixing plate 37 is disposed on the inside thereof, thereby preventing the inside of the handle frame 16 from being seen even when the operation handle 17 is stored. The appearance can be improved. Further, since the structure of the handle frame 16 can be simplified, the manufacturing cost can be suppressed.

  Further, since the stopper pin support member 35 is attached to the operation handle attachment portion 17a so as to be close to the outer periphery of the handle frame 16, the handle attached in the handle frame 16 when the operation handle 17 is in the working position. Since the position fixing plate 37 can be made difficult to see, the appearance can be improved. Further, there is no need to provide a folding back for hiding the handle position fixing plate 37 on the operation handle, and the manufacturing cost can be reduced because the handle does not have to have a complicated shape.

  Further, when the operation handle 17 is at the work position P1, the cover member 35b has a triangular shape in a side view having an inclined surface in order to ensure the operator's visibility of the operation panel of the walking type management machine 1 such as the speed change guide 13. Therefore, the operability of the rear rotary walking type management machine 1 can be improved.

  Further, the stopper pin support member 35 is attached to the operation handle attachment portion 17a so as to be close to the handle frame 16 on the outer periphery of the handle frame 16, and the stopper pin support member 35 has substantially the same width and shape as the handle frame 16. Because of the formation, when the handle is moved to the working position P1, a sense of unity with the handle frame is generated, the appearance can be improved, and there is no need to separately attach a cover to the stopper pin support member 35. Can also be suppressed.

  In addition, since the rotation range of the operation handle 17 is restricted by attaching the restriction pin 39 for restricting the rotation range of the operation handle 17 to the handle frame 16, for example, the operator handles the operation handle during work. It is possible to prevent the operation handle 17 from moving from the handle work position P1 to the handle storage position P2 when moving to change the position 17. Thereby, the movement of the operation handle 17 which is not predicted by the operator can be prevented.

  In addition, since the extending portion 37a of the handle position fixing plate is configured to be attached to the handle position fixing plate 37 with a gap at both ends, the welding performed to attach the extending portion 37a may be performed with the minimum necessary amount. Time can be reduced and manufacturing costs can be reduced. Moreover, since the handle frame 16 is opened in a substantially U shape, the wiring of the wire harness 42 can be facilitated.

  Further, by attaching a metal rod 41 for regulating the wire harness 42 below the open surface on the back surface of the handle frame 16, the wire harnesses 42 are prevented from getting entangled with each other, and the operation handle 17 is stored in the storage position P2. It is also possible to prevent the wire harness 42 from being caught between the operation handle 17 and the handle frame 16 when housed in the housing. Thereby, disconnection of the wire harness 42 can be prevented. Furthermore, since the strength of the handle frame 16 can be increased, the restriction member for the wire harness 42 and the reinforcement member for the handle frame 16 can be combined into one, and there is no need to newly provide a member for restricting the wire harness. The manufacturing cost can also be suppressed.

  In addition, the emergency stop switch mounting plate 33 is provided in a substantially L shape inside the operation handle 17 having a loop shape, and the mounting plate 33 also serves as a rotation stopper for the deadman clutch 31. Since it is not necessary to provide a stopper, the manufacturing cost can be reduced, and further, the shape of the mounting plate 33 can be increased because it is not affected by the stop position of the deadman clutch.

  In this embodiment, the pin 39 is attached to the handle frame 16 in order to restrict the rotation range of the operation handle. However, the present invention is not limited to this. For example, a wire, a plate, or the like may be attached. .

  In the present embodiment, the metal rod 41 having a circular cross section is attached to the handle frame 16 in order to restrict the wire harness and reinforce the handle frame. However, the present invention is not limited to this. It is good also as a structure which attaches etc. Moreover, not only metal but the structure which attaches sticks, such as a reinforced plastic and ceramic, may be sufficient.

  In the present embodiment, the stopper pin support member 35 is made of metal, but is not limited thereto. For example, the stopper pin support member 35 may be made of resin or reinforced plastic.

  In the present embodiment, the operation handle attached to the handle frame 16 has a loop shape. However, the present invention is not limited to this, and for example, a configuration in which an operation handle having a substantially Y shape in plan view may be attached.

  In addition, as shown in FIG. 12, even if it uses the handle frame 16 'which concerns on this invention for the rear rotary type walk type | mold management machine 43 which has the rotary tiller 45 from which the shape of the rotor nail | claw 46 differs, it can implement suitably. it can. FIG. 12 shows a state in which the operation handle 17 ′ attached to the handle frame 16 ′ is stored in the storage position.

1 walking type management machine (rear rotary type walking type management machine)
2 Mission case 11b Cover body (body cover)
16 Handle frame 16a Protruding part 26b Mounting part 17 Operation handle 19 Rotary tillage device M Midway part

Claims (1)

In a walking management machine comprising a mission case (2) supported by a wheel (3) , and a rotary tiller (19) arranged behind the mission case (2) ,
A handle frame (16) extending from the transmission case (2) toward the rear upper side;
An operation handle (17) attached to the handle frame (16) ,
The handle frame (16) is formed so as to protrude from a cover body (11b) that covers the rear side of the mission case (2) , and the handle frame (16) protruding from the cover body (11b) ( 16a) is provided with a mounting portion (16b) having a rotation fulcrum of the operation handle (17) ,
Said operating handle (17), and a working position for use when working (P1), pivots downward from the working position (P1), storage position proximate the the rotary plow (19) and (P2) When installing to be fixed to
At the work position (P1) of the operation handle (17) , the distal end side of the operation handle (17) connects the field ground point of the wheel (3) and the rotary shaft (20) of the rotary tiller (19) in a side view. The operation handle (17) is bent downward from the midway part (M) so that the line (L) and the line (H) from which the operator grips the operation handle (17) to the front are substantially parallel to each other. Let me configure
When fixed to the storage position of the manipulation handle (17) (P1), the middle portion is bent point of the operation handle (17) (M) is positioned substantially above the rotary cultivator (19), the operating handle (17) the transmission case (2), b Tari cultivator (19), and a walking-type tiller, characterized in that setting the position of the mounting portion (16b) so as to substantially along the rear cover (26).

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