JP2017216908A - Axle type walking husbandry machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move forward a machine body to continue ridge forming work even when the machine body does not move forward due to insufficient force of moving forward at a time of ridge forming work.SOLUTION: An axle type walking husbandry machine M comprises: a machine body 2 including an engine 9; a steering handle 1 projecting to a rear side from the machine body 2 and operated by a worker; and a tillage rotary shaft 3 supported rotatably on a lower side of the machine body 2 in a right/left direction. The tillage rotary shaft 3 is used also as an axle in the axle type walking husbandry machine. The axle type walking machine further comprises: a ridge forming sheet 4 forming a ridge on a rear side of the tillage rotary shaft 3; and a support mechanism 6 supporting a tail wheel 7 contacting a ground on a rear side of the ridge forming sheet 4. The support mechanism 6 includes a foot placement part 50 for assisting moving forward, the foot placement part enabling a worker to put his/her foot thereon and to impart a force of moving forward to the machine body 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an axle type walking management machine in which a tilling rotary shaft is also used as an axle.

  A machine body having a prime mover, a steering handle that protrudes rearward from the machine body and is operated by an operator, and a tilling rotary shaft that is rotatably supported on the lower side of the machine body in a left-right direction. An axle type walking management machine that is also used as an axle is known. For example, Patent Document 1 describes an axle-type walking management machine that includes a simple ridger (a ridge-forming sheet that can be flexibly deformed) and can form a ridge behind a rotary rotary shaft.

JP 2014-212708 A

  However, since the axle-type walking management machine moves forward by the tilling reaction force of the tilling rotary shaft, if a large load acts on the stand, the advancing force may be insufficient and the aircraft may not move forward. Such a problem is conspicuous in the uphill inclination of the inclined field, and improvement of the field response capability has been desired.

The present invention has been created in order to solve these problems in view of the above circumstances, and the invention of claim 1 includes an airframe having a prime mover and an operator projecting rearward from the airframe. An axle-type walking management machine comprising: a steering handle operated in a horizontal direction; and a tilling rotary shaft that is rotatably supported on the lower side of the fuselage along the left-right direction. Equipped with a ridger that forms ridges behind the rotary shaft and a support mechanism that supports the tail wheel that contacts the ground behind the ridger. It is characterized in that a footrest portion for advancing assist that can be provided is provided.
The invention according to claim 2 is the axle type walking management machine according to claim 1, wherein the tail wheels are arranged side by side at a predetermined interval, and the footrest portion is a left and right tail wheel. It is arranged between them.

According to the first aspect of the present invention, the support mechanism for supporting the tail wheel is provided with the footrest portion for forward assistance that allows the operator to place the foot and apply the forward force to the body. Even if the aircraft does not move forward due to lack of forward force during the standing work, if the operator gives forward assistance force to the aircraft through the footrest, the aircraft can be advanced and the uprighting work can be continued. it can. As a result, it is possible to carry out the upright work in the inclined farm field, and the field response capability can be improved.
According to the invention of claim 2, since the footrest is disposed between the left and right tail wheels, the forward assisting force by the operator can be imparted to the airframe in a well-balanced manner via the left and right tail wheels. .

(A) is a side view of an axle type walking management machine (with no footrest portion attached) according to an embodiment of the present invention, and (B) is a side view of a support mechanism with the footrest portion attached. (A) is a perspective view of an axle type walking management machine (without a footrest part) according to an embodiment of the present invention, and (B) is a perspective view of a support mechanism with a footrest part attached thereto.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, M is an axle type walking management machine, and the axle type walking management machine M includes a machine body 2 having a steering handle 1 extending obliquely rearward and upward, and a lateral direction below the machine body 2. A rotary rotary shaft 3 which is supported along the shaft and is also used as an axle, and a vertically molded sheet 4 (straighter) which is disposed immediately behind the rotary rotary shaft 3 and can be deformed flexibly. An attachment / detachment mechanism 5 that allows the seat 4 to be attached to and detached from the body 2, and a tail wheel 7 that is supported on the body 2 side by the support mechanism 6 and that is disposed on the back side of the saddle-molded sheet 4.

  The airframe 2 includes a horizontal frame 8 that also functions as a fender cover, an engine 9 (motor) fixed on the upper surface side of the horizontal frame 8, and a transmission case (not shown) disposed on the side of the engine 9. A mission case 12 inclined downward toward the front in the center of the left and right width of the fuselage 2, and a pair of left and right parallel side plates 13a extending downward from the lower surface side of the rear end of the horizontal frame 8. And a lower frame 14 extending downward from the lower surface side of the front half of the horizontal frame 8.

  The central portion of the tillage rotary shaft 3 extending in the left-right direction is rotatably supported by a front end portion (lower end portion) projecting downward from the horizontal frame 8 in the mission case 12, and the mission case 12 is interposed via the transmission case. Then, the power input from the engine 9 is shifted and transmitted to the tilling rotary shaft 3. A plurality of tilling claws 17 projecting in the radial direction of the tillage rotary shaft 3 are provided at portions of the tillage rotary shaft 3 that project from the transmission case 12 to the left and right sides. The plurality of tilling claws 17 and the tilling rotary shaft 3 constitute a tilling work unit 16.

  At the rear of the machine body 2, an operation lever 18 located below the handle 1 is projected rearward and obliquely upward. The power transmitted from the transmission case 12 to the tilling rotary shaft 3 is changed by the swinging operation of the operation lever 18.

  The handle 1 includes a handle frame 19 fixed on the upper surface side of the rear end portion of the machine body 2, and a handle main body 21 that is attached and supported on the base end side of the handle frame 19 and extends obliquely rearward and upward. . The handle main body 21 is bifurcated into a left and right C shape toward the protruding side (front end side), and a pair of left and right front ends of the handle main body 21 are bent downward to form a grip 21a.

  A clutch lever 22 is provided on one side of the left and right grips 21a so as to swing away from and close to the grip 21a. When the clutch lever 22 is gripped together with the grip 21a, a clutch mechanism (not shown) is connected. Then, while the tillage rotary shaft 3 is tillage driven (rotation driven), when the hand is released from the clutch lever 22, the clutch lever 22 swings in a direction away from the grip 21a by elastic force, and the clutch mechanism is The cutting rotary shaft 3 is stopped driving.

  The support mechanism 6 includes a support frame 23 that is a rod-like member whose base end side is detachably attached to and supported by the rear end side of the airframe 2, and an outer casing that is rotatable about an axis at the front end side half of the support frame 23. The movable cylinder 24, the mounting frame 26 that has a U-shape projecting radially outward of the movable cylinder 24, and the projecting end side being opened, and the pivot of the movable cylinder 24 about the support frame 23 are restricted. Locking means 27 for locking the movable cylinder 24 to the support frame 23.

  On the outer surface of the movable cylinder 24, a resistance bar 31 is integrally projected. The proximal end, which is the end of the resistance rod 31 on the movable cylinder 24 side, extends in the radial direction of the movable cylinder 24, the midway portion is bent backward with respect to the proximal end portion, and the distal end portion is in the midway portion. On the other hand, the resistor bar 31 is bent slightly forward so that the entire shape of the resistance bar 31 becomes a crank shape.

  The mounting frame 26 is disposed and formed on the opposite side of the resistance rod 31 with the movable cylinder 24 sandwiched between the movable cylinders 24 when viewed in the axial direction. The mounting frame 26 is formed integrally with the movable cylinder 24 and rotates integrally with the movable cylinder. Between the projecting ends of the left and right side portions 26 a of the mounting frame 26, a tail wheel axle 32 in the left and right direction is erected, and the pair of left and right tail wheels 7 are freely rotatable via the tail wheel axle 32. It is supported by the mounting frame 26.

  The left and right tail wheels 7 arranged at a predetermined interval in the left-right direction have a traveling posture in which the movable barrel 24 is grounded at the lowest position by the rotation of the movable cylinder 24 with respect to the support frame 23 and a stored posture stored in the highest position. Can be switched to. When the tail wheel 7 is in the running posture, the mounting frame 26 is turned downward and the resistance rod 31 is switched to the non-working posture. On the other hand, when the tail wheel 7 is retracted, the mounting frame 26 is turned upward and the resistance rod 31 is switched to the action posture facing downward. The resistance rod 31 in the action posture is inserted at the tip end side into the soil to generate running resistance and stabilize the running.

  On the tail wheel 7 side, a regulating member 33 protruding forward is provided. The restricting member 33 is formed in a U-shape with the rear open, and the rear end (base end) of each of the left and right side portions 33a of the restricting member 33 is on the outer surface side of the side portion 26a of the mounting frame 26, respectively. In the contacted state, the side portion 26a is fixed via a plurality of bolts B.

  The locking means 27 is a locking pin extending in the radial direction of the movable cylinder 24, and the locking pin 27 is attached to a construction member 34 that is installed midway between the left and right side portions 26 a of the mounting frame 26. The locking pin 27 is elastically biased toward the advancing side by an elastic member 36 such as a compression spring that is externally mounted on the locking pin 27.

  Then, when the locking pin 27 is advanced and inserted into the movable cylinder 24 and the support frame 23, the rotation of the movable cylinder 24 around the axis with respect to the support frame 23 is restricted, and the movable cylinder 24 and the mounting frame 26 supported thereby. The tail wheel 7 is positioned and locked on the support frame 23 side. On the other hand, in this state, when the locking pin 27 is retracted from the movable cylinder 24 and the support frame 23 against the urging force of the elastic member 36, the locking pin 27 is removed from the movable cylinder 24 and the support frame 23. The movable cylinder 24 can rotate about the axis with respect to the support frame 23.

  In this way, the movable cylinder 24 positioned and locked by the locking pin 27 has at least two rotation positions: a rotation position at which the tail wheel 7 is switched to the traveling position and a rotation position at which the tail wheel 7 is switched to the retracted position. Is set to Incidentally, the retracting side end of the locking pin 27 is bent in an L shape so that the operator can easily advance and retract.

  The eaves-molded sheet 4 is provided in a sheet body 37 made of a synthetic resin or the like that is formed in a rectangular shape that is long in the left-right direction and is elastically deformable, and a central portion in the left-right direction and a central portion in the vertical direction It is composed of a seat frame 38, and is stored by being positioned on the rear side of the rotary rotary shaft 3 to form a ridge by the attaching / detaching mechanism 5 described above, and positioned above and behind the rotary rotary shaft 3. It is supported on the rear end side of the airframe 2 to switch the posture to the retracted posture. Since the attaching / detaching mechanism 5 is not a main part of the present invention, a detailed description thereof is omitted.

  The cocoon forming sheet 4 attached to the rear end side of the machine body 2 in the state switched to the forming posture is close to the back side of the tillage rotary shaft 3 and is steeply inclined upward in the side view. At this time, when the tail wheel 7 is switched to the traveling posture, the front surface of the restricting member 33 faces the central portion in the left-right direction at the lower end of the back surface of the molded sheet 4 in the molding posture.

  In this state, when the operator grips both grips 21a of the handle 1 and causes the rotary rotary shaft 3 to be driven to rotate by the clutch lever 22 while the machine body 2 travels forward, the tiller 7 stabilizes the tilling depth. Thus, the tilling work of the field is performed by the tilling rotary shaft 3 and the straw is formed by the straw forming sheet 4. In the molding of the ridge, the restricting member 33 restricts the central portion in the left-right direction of the lower end portion of the ridge-molded sheet 4 from being deformed rearward, and the left and right portions of the ridge-molded sheet 4 are allowed to deform backward. The slope of the ridge portion is formed by the left and right portions of the ridge forming sheet 4, and the flat valley portion of the ridge is formed by the lower end of the central portion in the left-right direction of the ridge forming sheet 4.

  According to the uprighting work by the axle type walking management machine M that does not have a dedicated axle, the machine body 2 moves forward by the tilling reaction force of the tilling rotary shaft 3, so that if a large load is applied to the straw forming sheet 4, the forward force is increased. There is a risk that the airframe 2 will not move forward due to a shortage. Therefore, the axle type walking management machine M according to the embodiment of the present invention can apply an advancing force to the airframe 2 by an operator when the airframe 2 stops moving forward due to insufficient forward force. A footrest 50 for forward assistance is provided. Hereinafter, the footrest portion 50 will be described in detail.

  The footrest portion 50 includes a footrest plate 51 on which an operator puts his / her foot and pushes it forward, left and right fixing portions 52 extending forward from both left and right ends of the footrest plate 51, and a footrest plate 51. And an abutting portion 53 that extends forward from the upper end portion. The footrest plate 51 is disposed between the left and right tail wheels 7 arranged on the left and right sides at a predetermined interval, and the left and right fixing portions 52 are mounted together with the regulating member 33 via the plurality of bolts B described above. The abutment portion 53 abuts on the upper end portion of the mounting frame 26 from the rear to transmit the forward assist force to the mounting frame 26.

  According to such a footrest portion 50, even if the forward force is insufficient during the upright work and the airframe 2 does not move forward, the operator can apply the forward assist force to the airframe 2 via the footrest portion 50. In this case, it is possible to continue the uprighting work by moving the machine body 2 forward.

  Further, since the footrest portion 50 is disposed between the left and right tail wheels 7 and in the vicinity of the rear of the regulating member 33, the forward assisting force by the operator is imparted to the body 2 through the left and right tail wheels 7 in a well-balanced manner. In addition, the forward assist force can be efficiently transmitted to the restricting member 33 that receives the most load at the time of setting up.

  Further, since the footrest portion 50 connects the left and right side portions 26a of the mounting frame 26, it not only functions as a reinforcing member for the mounting frame 26, but also covers the locking means 27 from the rear, so It is also possible to avoid operating the locking means 27 with the foot.

  Moreover, since the footrest part 50 has a forward leaning posture, the operability at the time of forward assist can be improved as compared with the case of the upright posture or the backward leaning formation. Further, since the footrest portion 50 is formed with a large number of convex portions 51a that extend in the left-right direction and are arranged in parallel in the vertical direction, it is possible to suppress slipping of the foot placed on the footrest portion 50 during forward assist. It can also function as mud drop attached to the sole. In addition, since the convex part 51a of this embodiment is cut and raised, the increase in the number of parts and cost can also be avoided.

  According to the present embodiment configured as described, the machine body 2 having the engine 9, the steering handle 1 that protrudes rearward from the machine body 2 and is operated by the operator, and is rotatable to the lower side of the machine body 2. A tilling rotary shaft 3 that is supported in the left-right direction, and is an axle-type walking management machine M in which the tilling rotary shaft 3 is also used as an axle, and a tack-forming sheet 4 that forms a straw behind the tilling rotary shaft 3 And a support mechanism 6 that supports the tail wheel 7 that comes in contact with the rear side of the saddle-molded sheet 4, and the support mechanism 6 allows the operator to place a foot and apply forward force to the machine body 2. Since the assisting foot rest 50 is provided, even if the forward force is insufficient during the uprighting work and the airframe 2 does not move forward, the worker gives the forward assisting force to the airframe 2 via the footrest 50. If so, the aircraft 2 is moved forward and the uprighting operation is continued. It is possible. As a result, it is possible to carry out the upright work in the inclined farm field, and the field response capability can be improved.

  Further, the tail wheels 7 are arranged on the left and right sides with a predetermined interval, and the footrest portion 50 is disposed between the left and right tail wheels 7, so that the forward assist force by the operator is passed through the left and right tail wheels 7. Can be applied to the airframe 2 in a well-balanced manner.

M Axle-type walking management machine 1 Steering handle 2 Airframe 3 Tillage rotary shaft 4 Shaft forming sheet 6 Support mechanism 7 Tail wheel 9 Engine 26 Mounting frame 50 Foot rest

Claims (2)

A fuselage with a prime mover,
A steering handle that protrudes rearward from the aircraft and is operated by an operator;
A tilling rotary shaft along the left-right direction supported rotatably on the lower side of the fuselage,
An axle type walking management machine in which the rotary rotary shaft is also used as an axle,
A ridger for forming a ridge behind the tillage rotary shaft;
And a support mechanism for supporting the tail wheel to be grounded at the rear of the vertical stand,
An axle type walking management machine characterized in that the support mechanism is provided with a footrest portion for forward assistance that allows an operator to place a foot and apply forward force to the airframe. The tail wheels are arranged side by side with a predetermined interval,
The axle type walking management machine according to claim 1, wherein the footrest is disposed between the left and right tail wheels.

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