JP5466540B2 - Management machine - Google Patents

Description

  The present invention relates to a management machine, and more particularly, to an arrangement of a clutch operation means and a handle height adjustment operation means.

  Conventionally, a pair of left and right handles has been provided, and an operator handles a main clutch that can transmit or shut off engine power to each part, and a clutch (rotary clutch) that can be transmitted to or cut off from a tilling device (work machine) There is known a management machine that can be turned on and off by a clutch lever without releasing the hand.

  For example, in the management machine described in Patent Document 1, main clutch operation means (clutch lever) for performing on / off operation of the main clutch is disposed within a range where a finger of a hand holding the grip of one of the left and right handles can reach. Clutch operating means (rotary clutch lever) for performing on / off operation of the rotary clutch is arranged within a range where a finger of a hand holding the grip of the other handle can reach.

Japanese Patent Laid-Open No. 10-71871

  When the operator changes the management machine from the moving state to the working state or from the working state to the moving state, the operator performs on / off operation of the rotary clutch by the clutch operating means and adjusts the height of the handle to the handle height. Adjust by means. However, in the management machine described in Patent Document 1, the handle height adjusting operation means for adjusting the height of the handle is not arranged near the grips of the left and right handles. Therefore, when changing the state of the management machine as described above, the operator can operate the rotary clutch lever while grasping the grip of the handle, but cannot operate the handle height adjusting operation means. There wasn't. In other words, the operator had to take his hand off the handle whenever the state of the management machine was changed. Therefore, there is a problem that the posture of the management machine becomes unstable and the stability of the work cannot be secured, and there is a problem that the operation means is troublesome and the workability is poor.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a management machine that can quickly change the working state and improve workability while ensuring the stability of the work.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In claim 1, a handle that protrudes from the body and has left and right grips at its projecting ends, a handle adjustment lever that can adjust the height of the handle relative to the body, and power from the drive source to the tillage device And a rotary clutch lever for operating a clutch that can be transmitted or disengaged, wherein the handle adjustment lever and the rotary clutch lever are close to each other, and one of the left and right grips is The handle adjustment lever extends in the front-rear direction, is pivotally supported so as to be swingable in the left-right direction, and is disposed inside the left and right grips. The rotary clutch lever extends in the front-rear direction and is pivotally supported so as to be swingable in the up-down direction. The handle adjustment lever is pivoted in the horizontal direction, the rotary clutch lever is pivoted in the vertical direction, and they are orthogonal to each other with different operation directions. It is configured to be operated in the direction .

According to a second aspect of the present invention, in the management machine according to the first aspect, the handle adjustment lever is biased toward a handle fixing operation position separated from one grip after the handle height is adjusted, and is held at the fixed operation position. The rotary clutch lever is configured such that a part operated by a finger is positioned below the grip, and a clutch disengagement operating position where the part operated by the finger is positioned above the grip. It can be held .

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect, the clutch operating means and the handle height adjusting operating means can be operated while the handle is gripped. Therefore, it is possible to improve the workability by quickly changing the work state while ensuring the work stability.

Further , it is possible to smoothly operate the clutch operating means and the handle height adjusting operating means that are frequently operated. Therefore, workability can be changed quickly to improve workability.

  Further, the clutch operating means and the handle height adjusting operating means can be clearly distinguished and operated. Accordingly, it is possible to prevent erroneous operation of each operation means and improve workability.

  Further, even if the clutch operating means and the handle height adjusting operating means are confused and cannot be operated. Accordingly, it is possible to prevent erroneous operation of each operation means and improve workability.

According to the second aspect of the present invention, even if the clutch operating means and the handle height adjusting operating means come into contact with each other when the handle is operated, the operation is not performed unless an external force of a certain level or more is applied. Accordingly, it is possible to prevent erroneous operation of each operation means and improve workability.

The left view which showed the whole structure of the management machine which concerns on one Embodiment of this invention. The top view which showed the whole structure of the management machine which concerns on one Embodiment of this invention. The perspective view which showed the structure of the clutch operation means and handle | steering-wheel height adjustment operation means which concern on one Embodiment of this invention. The fragmentary top sectional view showing the composition of the clutch operation means and handle height adjustment operation means concerning one embodiment of the present invention. The left view which showed the structure of the clutch operation means and handle | steering-wheel height adjustment operation means which concern on one Embodiment of this invention.

  First, the overall configuration of the management machine 1 according to an embodiment of the present invention will be described using FIGS. 1 to 2. In the following, the front, rear, left, right, up and down directions are defined with the arrow A direction as the front direction.

  The management machine 1 is a walking type management machine, and can perform farming work such as tillage work and middle-plowing weeding with various work devices attached to the machine body. The management machine 1 of this embodiment is equipped with a rotary tiller 40 that is an example of a working device.

  As shown in FIGS. 1 and 2, the management machine 1 includes an engine frame 11, an engine 12, a transmission mechanism 14, a transmission, wheels 30 and 30, a rotary tiller 40, an operation member 50, and the like.

  An engine 12 that is a drive source of the management machine 1 is mounted on the front portion of the engine frame 11. The transmission is disposed behind the engine 12. A transmission mechanism 14 is provided between the engine 12 and the transmission. The power of the engine 12 is transmitted from the output shaft to the input shaft 21 of the transmission through the transmission mechanism 14 including pulleys 14a and 14b, a belt 14c, a main clutch 14d, and the like.

  In the transmission, power is transmitted from the input shaft 21 to the pair of left and right wheels 30 and 30 via the transmission mechanism in the transmission case 20, the traveling output shaft, and the axle 31. The power is transmitted from the input shaft 21 to the tilling shaft 44 of the rotary tiller 40 via the transmission mechanism in the chain case 46 disposed behind the transmission case 20, the rotary clutch 47, and the tilling side output shaft. The The rotary clutch 47 transmits or interrupts the power from the engine 12 to the rotary tiller 40. The rotary clutch 47 enables power transmission when in the on state, and transmits power when in the off state. It is a thing to cut off.

  The left and right wheels 30 and 30 are respectively fixed to the left or right end portion of the axle 31 and arranged on the side of the lower portion of the mission case 20. The left and right wheels 30 and 30 are rotated by receiving power from the engine 12. The rotary tiller 40 is disposed behind the left and right wheels 30. The rotary tiller 40 includes a tilling side output shaft, a tilling shaft 44, a tilling cover 45, and the like. A plurality of tilling claws 42, 42... Are planted on the outer peripheral surface of the tilling shaft 44. The plurality of tilling claws 42, 42,... The rotary tiller 40 receives power from the engine 12 to rotate the tilling claws 42, 42...

  The operation member 50 includes a handle 52 and various operation tools. The operation member 50 protrudes rearward and upward from the machine body (mission case 20) of the management machine 1 and is disposed above the rotary tiller 40.

  The handle 52 includes a left handle 52L and a right handle 52R. A base 52a of the handle 52 is provided on the mission case 20 so as to be horizontally rotatable, and protrudes rearward and upward. A left handle 52L and a right handle 52R are attached to the upper end of the base 52a via a handle height adjusting mechanism 54.

  The left handle 52L protrudes from the base 52a to the upper left rear, and the right handle 52R protrudes from the base 52a to the upper right rear. The left handle 52L and the right handle 52R extend obliquely in the front-rear direction in a substantially overlapping state in the side view of the operation member 50, and the left and right widths between each other in the plan view of the operation member 50 increase toward the rear. Placed in. That is, the left handle 52L and the right handle 52R are arranged so as to form a Y shape in the plan view of the operation member 50 together with the base 52a. The protruding ends of the left handle 52L and the right handle 52R are arranged on the rear upper side of the rotary tiller 40 so as to face each other with a predetermined interval in the left-right direction.

  The protruding ends of the left handle 52L and the right handle 52R are provided with a left grip 53L and a right grip 53R, respectively, which are parts gripped by an operator when operating the management machine 1. The handle 52 is configured so that the direction in which the handle 52 extends from the machine body can be changed back and forth by horizontally rotating the base 52a. Further, the handle 52 is configured such that the height of the handle 52 can be adjusted by operating the handle height adjusting mechanism 54 using the handle adjusting lever 57.

  In the vicinity of the left grip 53L, a main clutch lever 55a and a parking brake lever 55b are disposed as main clutch operating means. The main clutch lever 55a is used to turn on and off the main clutch 14d. The main clutch lever 55a is supported on the front upper side of the left grip 53L so as to be swingable in the vertical direction (vertical direction). At this time, the main clutch lever 55a is disposed at a position where it can be operated by the finger of the left hand of the operator who holds the left grip 53L. That is, the main clutch lever 55a is configured so that the operator can operate the left hand without releasing the left grip 53L.

  The main clutch lever 55a is connected to the main clutch 14d via a main clutch operation wire so that the main clutch 14d can be turned on and off. The main clutch 14d is energized so as to be in a disengaged state in which power transmission from the engine 12 is interrupted by a spring which is an energizing member (not shown). At this time, the main clutch lever 55a is urged to swing away from the left grip 53L by the force of the spring transmitted through the main clutch operation wire, and when the main clutch lever 55a is not operated, It is held at the cutting operation position in which 14d is cut. When the main clutch lever 55a is swung in the direction approaching the left grip 53L by the finger of the hand gripping the left grip 53L and operated to the entry operation position, the main clutch 14d transmits power from the engine 12 to the transmission case 20. It is comprised so that it may switch to the input state which is a state which can be transmitted to the input shaft 21 of this.

  A base plate 56 is disposed in the vicinity of the right grip 53R. The base plate 56 is disposed in front of the right grip 53R and is fixed to the handle 52R by welding. The base plate 56 is provided with a handle adjustment lever 57 as a handle height adjustment operation means for adjusting the height of the handle 52, a rotary clutch lever 58 as a clutch operation means for turning on and off the rotary clutch 47, and an emergency stop button 59. Is done. The positions of the main clutch lever 55a, the parking brake lever 55b, and the base plate 56 are not limited to this, and may be arranged on any one of the left and right handles 52L and 52R.

  With such a configuration, the operator appropriately holds the levers and the like in the vicinity of the grips 53L and 53R while holding the left and right grips 53L and 53R of the handle 52 protruding rearward and upward from the base 52a of the handle 52 through the base 52a. The farm scene can be cultivated by the cultivating claws 42, 42 of the rotary cultivating device 40 while the vehicle is driven by the wheels 30, 30.

  Next, with reference to FIGS. 3 to 5, a handle adjustment lever 57 that is a handle height adjustment operation means that can adjust the height (vertical position) of the handle 52 (left and right grips 53L and 53R) relative to the machine body, and a clutch The configuration of the rotary clutch lever 58 that is the operating means will be specifically described. In this embodiment, the handle height adjusting operation means and the clutch operating means are constituted by swing levers, but there is no particular limitation, and the height of the handle 52 can be adjusted. Any device capable of operating 47 can be used.

  As shown in FIG. 3, the handle adjustment lever 57 and the rotary clutch lever 58 are disposed in the vicinity of the right grip 53R of the right handle 52R. The handle adjustment lever 57 and the rotary clutch lever 58 are supported by a base plate 56 that is fixed to the right handle 52R by welding.

  The base plate 56 is a member formed by bending a plate-like member. The base plate 56 has a right side portion and a continuous upper side portion and a front side portion that are bent at a substantially right angle with respect to the right side portion. The base plate 56 is disposed near the front of the right grip 53R on the inner side of the right handle 52R, that is, on the left side, and is fixed to the right handle 52R by welding at the right front portion of the upper portion. At this time, the base plate 56 is disposed such that the right side portion is substantially vertical downward and substantially parallel to the axial direction of the right grip 53R.

As shown in FIG. 4, a fulcrum shaft 56 a of the handle adjustment lever 57 projects vertically downward from the base plate 56 on the upper portion of the base plate 56. Further, a latching pin 56b is provided vertically downward with respect to the base plate 56, and a contact pin 56c is provided vertically with respect to the base plate 56 so as to protrude downward. . The latch pin 56b is disposed on the right front side of the fulcrum shaft 56a, and the contact pin 56c is disposed on the left front side of the fulcrum shaft 56a. Further, an emergency stop button 59 is disposed on the upper side of the base plate 56 so as to be located on the left side of the contact pin 56c.

  As shown in FIG. 5, a fulcrum shaft 56 d of the rotary clutch lever 58 is provided on the right side portion of the base plate 56 so as to protrude in the left direction perpendicular to the base plate 56. Further, on the right side, a contact pin 56e is erected perpendicularly to the base plate 56 in the left direction, and a contact pin 56f is erected perpendicularly to the base plate 56 in the left direction. . The contact pin 56e is disposed above the fulcrum shaft 56d, and the contact pin 56f is disposed below and behind the fulcrum shaft 56d.

  A hooking groove 56 g is formed in the front side portion of the base plate 56. A clutch operation wire 47a for connecting the rotary clutch lever 58 and the rotary clutch 47 is hooked to the hook groove 56g in a state of extending in the front-rear direction.

  As shown in FIG. 4, the handle adjustment lever 57 is for adjusting the height of the handle 52 relative to the airframe. The handle adjusting lever 57 is a member formed by providing a cylindrical member at both ends of a substantially L-shaped plate member. The handle adjustment lever 57 extends in the front-rear direction, and is disposed on the left side of the right grip 53R near the left side of the right handle 52R. The handle adjustment lever 57 includes an arm portion 57a made of a substantially L-shaped plate member, a shaft support portion 57b made of a cylindrical member, and a grip portion 57c made of a cylindrical member. The arm portion 57a is arranged so that the long side is positioned on the left side of the short side with the plate surface substantially directed in the vertical direction. The shaft support portion 57b is provided at the end on the short side of the arm portion 57a so that the axial center direction is perpendicular to the plate surface of the arm portion 57a. The grip portion 57c is for a finger of a hand holding the right grip 53R to be hooked, and is provided at the long side end of the arm portion 57a so as to extend along the right grip 53R.

  The handle adjustment lever 57 is supported by the base plate 56 so as to be swingable in the left-right direction (horizontal direction) by inserting the fulcrum shaft 56a of the base plate 56 into the shaft support portion 57b (in the direction of white arrows in FIGS. 3 and 4). At this time, the handle adjustment lever 57 is disposed with respect to the base plate 56 such that the long side portion of the arm portion 57a is located on the left side of the shaft support portion 57b and the grip portion 57c faces the right grip 53R. . As a result, when the handle adjustment lever 57 swings counterclockwise around the fulcrum shaft 56a as viewed from above, the handle adjustment lever 57 approaches the right grip 53R. On the other hand, when the handle adjustment lever 57 swings clockwise around the fulcrum shaft 56a when viewed from above, the handle adjustment lever 57 is separated from the right grip 53R and is attached to the contact pin 56c of the base plate 56 at the short side portion of the arm portion 57a. Abut. When the handle adjustment lever 57 comes into contact with the contact pin 56c, the grip portion 57c is disposed at a position where the finger of the right hand holding the right grip 53R can reach. In this way, the handle adjustment lever 57 is configured such that the operator can operate it while holding the right grip 53R with the right hand without releasing the right hand from the right grip 53R.

  A left-handed (counterclockwise) torsion spring 60, which is an urging member, is disposed on the shaft support portion 57b with its coil center aligned with the axis of the shaft support portion 57b. One side latching portion of the torsion spring 60 is latched to the short side portion of the arm portion 57 a, and the other side latching portion of the torsion spring 60 is latched to the latching pin 56 b of the base plate 56. The handle adjustment lever 57 is urged by the torsion spring 60 so as to swing clockwise about the fulcrum shaft 56a when viewed from above, and the short side portion of the arm portion 57a contacts the contact pin 56c of the base plate 56. It is held at the contacted position (position separated from the right grip 53R). That is, the handle adjusting lever 57 is in contact with the contact pin 56c when not operated by the operator.

  The handle adjustment lever 57 is connected to the handle height adjustment mechanism 54 connected to the handle height adjustment mechanism 54 at the short side portion of the arm portion 57 a and connected to the handle height adjustment mechanism 54. The handle adjustment lever 57 is configured to be able to operate the handle height adjustment mechanism 54 via the handle adjustment wire 54a. When the handle adjustment lever 57 is swung to the operation position close to the right grip 53R via the right grip 53R, the handle adjustment wire 54a is pulled, and the lock pin 54b is provided on the base 52a of the handle 52 (not shown). Pull out from the fixing hole. Thereby, the fixation of the left handle 52L and the right handle 52R to the base portion 52a is released. After adjusting the height of the left handle 52L and the right handle 52R relative to the airframe, when the finger operated from the handle adjustment lever 57 is released, the handle adjustment lever 57 is moved away from the right grip 53R by the biasing force of the torsion spring 60. It is swung to a position (handle fixing operation position). Thereby, the handle height adjusting mechanism 54 fits the lock pin 54b into the fixing hole, and fixes the left handle 52L and the right handle 52R to the base 52a. That is, the handle adjustment lever 57 is held at a handle fixing operation position (an operation position spaced apart from the right grip 53R) where the handle 52 is fixed by the urging force of the torsion spring 60. Therefore, when the handle adjustment lever 57 is not operated, The height of the handle 52 is fixed.

  As shown in FIG. 5, the rotary clutch lever 58 operates to turn on and off the rotary clutch 47. The rotary clutch lever 58 is a member formed by fixing a cylindrical member to one end of a rod-shaped member. The rotary clutch lever 58 extends in the front-rear direction, is disposed on the left side of the right handle 52R near the left side of the right grip 53R, and is disposed between the right grip 53R and the handle adjustment lever 57 in plan view. Is done.

  The rotary clutch lever 58 includes an arm portion 58a made of a rod-like member, a shaft support portion 58b made of a cylindrical member, a grip portion 58c made of a cylindrical member, and a wire connecting portion 58d made of a rod-like member. The arm portion 58a is arranged to extend in the front-rear direction. The shaft support portion 58b is fixed to one end (front side) of the arm portion 58a so that the axial direction of the shaft support portion 58b is perpendicular to the axial direction of the arm portion 58a. The grip portion 58c is a portion on which a finger of a hand holding the right grip 53R is hung, and is provided at the other end portion of the arm portion 58a. The wire connecting portion 58d is disposed so as to extend in the vertical direction, and is fixed to the vicinity of the shaft support portion 58b of the arm portion 58a at one end (upper side).

  The rotary clutch lever 58 is supported so as to be able to swing in the vertical direction (vertical direction) with the fulcrum shaft 56d of the base plate 56 inserted into the shaft support portion 58b (the black arrow direction in FIGS. 3 and 5). That is, the rotary clutch lever 58 is configured to be operable in a direction orthogonal to the left-right direction, which is the operation direction of the handle adjustment lever 57. At this time, the rotary clutch lever 58 is arranged with respect to the base plate 56 such that the grip portion 58c faces the right grip 53R and the other side (lower side) end of the wire connecting portion 58d is positioned below the fulcrum shaft 56d. Is done. At the same time, the rotary clutch lever 58 is disposed with respect to the base plate 56 so that the arm portion 58a is positioned between the contact pin 56e and the contact pin 56f of the base plate 56.

  Thus, when the rotary clutch lever 58 swings counterclockwise about the fulcrum shaft 56d of the base plate 56 as viewed from the left, the rotary clutch lever 58 comes into contact with the contact pin 56e at the arm portion 58a. On the other hand, when the rotary clutch lever 58 swings in the clockwise direction, the arm portion 58a contacts the contact pin 56f. When the rotary clutch lever 58 abuts against the abutment pins 56e and 56f, the grip portion 58c is disposed at a position where the finger of the right hand that grasps the right grip 53R can reach. Thus, the rotary clutch lever 58 is configured such that the operator can operate the right hand 53 while holding the right grip 53R without releasing the right hand from the right grip 53R.

  The rotary clutch lever 58 is connected to the clutch operation wire 47 a at the other end of the wire connecting portion 58 d and is connected to the rotary clutch 47. The rotary clutch lever 58 is configured such that the rotary clutch 47 can be turned on and off via a clutch operation wire 47a. The rotary clutch lever 58 is biased by a tension applied to the clutch operation wire 47a by a spring, which is a biasing member provided in the rotary clutch 47, as a biasing force.

  When the other end of the wire connecting portion 58d to which the clutch operation wire 47a is connected is located above the fulcrum shaft 56d, the rotary clutch lever 58 is viewed from the left side by the tension applied to the clutch operation wire 47a. It is urged counterclockwise about the fulcrum shaft 56d, and held at a position where it abuts against the abutment pin 56e (a position away from the right grip 53R). When the other side end of the wire connecting portion 58d is below the fulcrum shaft 56d, the rotary clutch lever 58 rotates clockwise around the fulcrum shaft 56d of the base plate 56 as viewed from the left by the tension applied to the clutch operating wire 47a. It is biased in the direction and is held at a position where it abuts against the abutment pin 56f (a position close to the right grip 53R).

  When the rotary clutch lever 58 is swung to a turning operation position where the grip portion 58c is located below the right grip 53R or a cutting operation position located above the right grip 53R, the rotary clutch lever 58 is operated according to the operation position. The rotary clutch 47 is configured to switch to an on state in which power from the engine 12 is transmitted to the rotary tiller 40 or a cut off state in which the power is interrupted. That is, the rotary clutch lever 58 is held at the on-off operation position where the rotary clutch 47 is in the on-state or at the off-operation position where it is in the off state by the tension applied to the clutch operation wire 47a.

  In such a configuration, when changing the working state of the management machine 1, the operator moves the management machine 1 to the field while holding the grips 53L and 53R of the left and right handles 52L and 52R with both hands. When starting the tilling work, first, the finger is released from the main clutch lever 55a being operated while the left grip 53L of the left handle 52L is held with the left hand. The main clutch lever 55a swings to the disengagement position by the spring force of the main clutch 14d and is held at that position (see FIG. 2). Thereby, the main clutch 14d is changed from the engaged state to the disengaged state, and the movement of the management machine 1 is stopped.

  After the movement of the management machine 1 stops, the operator holds the handle adjustment lever 57 held at the handle fixing operation position with the finger of the right hand holding the right grip 53R of the right handle 52R as shown in FIG. A swing operation is performed through the grip portion 57c to an operation position close to the right grip 53R. Thus, the operator can release the fixation of the left handle 52L and the right handle 52R to the base 52a of the handle 52 by the handle height adjusting mechanism 54 while holding the right grip 53R. Then, after the operator adjusts the height of the handle 52 relative to the machine body to a desired position, the operator releases his / her finger from the handle adjustment lever 57 being operated. The handle adjusting lever 57 is swung to the handle fixing operation position by the urging force of the torsion spring 60 and is held at that position. As a result, the left handle 52L and the right handle 52R are fixed to the base 52a and maintained at the adjusted height.

  Next, the operator swings the main clutch lever 55a held at the cutting position to a position close to the right grip 53R with the finger of the left hand holding the left grip 53L (see FIG. 2). Thus, the operator can put the main clutch 14d in the engaged state while holding the left grip 53L. Thereby, the power from the engine 12 is transmitted to the input shaft 21 of the mission case 20.

Then, as shown in FIG. 5, the rotary clutch lever 58 held at the cutting position is moved from the cutting operation position where the rotary clutch lever 58 held at the cutting position comes into contact with the contact pin 56e by the right hand finger holding the right grip 53R of the right handle 52R. A swinging operation is performed downward via the grip portion 58c to an entry operation position where it abuts on the contact pin 56f. Thus, the operator can put the rotary clutch 47 into the engaged state while holding the right grip 53R. Thus, power from the engine 12 is transmitted to the rotary tiller 40, rotary tiller 40 Ru driven. The rotary clutch lever 58 is held at the entering operation position. In this state, even if the handle adjustment lever 57 is swung to a position close to the right grip 53R, the rotary clutch lever 58 interferes because it is positioned below the handle adjustment lever 57 as shown in FIG. There is no.

  When stopping the rotary rotary tiller 40 that is being driven, the finger of the hand holding the right grip 53R swings the rotary clutch lever 58 held at the entering operation position upward from the entering operation position to the cutting operation position. Operation. In this way, the operator can turn off the rotary clutch 47 while holding the right grip 53R. As a result, the power transmitted from the engine 12 to the rotary tiller 40 is cut off, and the rotary tiller 40 stops. The rotary clutch lever 58 is held at the cut position. Even if the handle adjustment lever 57 is swung to a position close to the right grip 53R in this state, the handle adjustment lever 57 is formed in a substantially L shape as shown in FIG. 58 is positioned inside the L-shape, and the handle adjustment lever 57 does not interfere with the rotary clutch lever 58.

  As described above, the management machine 1 according to the present embodiment protrudes from the transmission that is the machine body, the handle 52 having the grips 53L and 53R at the protruding end, and the handle height that can adjust the height of the handle 52 relative to the transmission. Clutch operation for operating a rotary clutch 47, which is a clutch capable of transmitting or interrupting power from a handle adjusting lever 57, which is a height adjusting operation means, and a rotary tiller 40, which is a tilling device, to a power source. The handle 1 and the rotary clutch lever 58 are arranged at positions where fingers of a hand that grips the grip 53R can reach.

  With this configuration, it is possible to operate the handle adjustment lever 57 and the rotary clutch lever 58 while gripping the right grip 53R of the right handle 52R. Therefore, it is possible to adjust the height of the handle 52 relative to the engine frame 11 and to switch the on / off state of the rotary clutch 47 in a state where the handle 52 is held with both hands and the engine frame 11 is maintained in a stable posture. Become. Therefore, it is possible to improve the workability by quickly changing the work state while ensuring the work stability.

  Further, the handle adjustment lever 57 and the rotary clutch lever 58 are juxtaposed at positions where the fingers of the same hand that grips the right grip 53R reach close to each other.

  With this configuration, it is possible to smoothly operate the handle adjustment lever 57 and the rotary clutch lever 58 that are frequently operated continuously. Therefore, workability can be changed quickly to improve workability.

  The handle adjustment lever 57 is operated in a direction different from the operation direction of the rotary clutch lever 58. Specifically, the operation direction of the handle adjustment lever 57 is the left-right direction, the operation direction of the rotary clutch lever 58 is the up-down direction, and the two operation directions are different directions.

  With this configuration, the handle adjustment lever 57 and the rotary clutch lever 58 can be clearly distinguished and operated. Therefore, even if the handle adjustment lever 57 and the rotary clutch lever 58 are arranged adjacent to each other on the handle 52, the handle adjustment lever 57 and the rotary clutch lever 58 are not confused and operated. Therefore, erroneous operation of each operation lever can be prevented and workability can be improved.

  The handle adjustment lever 57 is operated in a direction orthogonal to the operation direction of the rotary clutch lever 58.

  With this configuration, even if the handle adjustment lever 57 and the rotary clutch lever 58 are mixed and operated, they cannot be operated. It is possible to improve the workability by preventing erroneous operation of each operation lever.

  The handle adjustment lever 57 is urged toward the handle fixing operation position where the handle 52 is fixed and can be held at the handle fixing operation position. The rotary clutch lever 58 puts the rotary clutch 47 into the engaged state. It is comprised so that holding | maintenance is possible by the entering position and the cutting position made into a cutting state.

  With this configuration, even if the handle adjustment lever 57 and the rotary clutch lever 58 are contacted when the handle 52 is operated, the handle 52 is not operated unless a certain external force is applied. Therefore, erroneous operation of each operation lever can be prevented and workability can be improved.

1 Control Machine 40 Rotary Tillage Device 47 Rotary Clutch 52 Handle 57 Handle Adjusting Lever 58 Rotary Clutch Lever

Claims (2)

A handle that protrudes from the airframe and has left and right grips at its projecting ends, a handle adjustment lever that can adjust the height of the handle relative to the airframe, and can transmit or cut power from the drive source to the tillage device A management machine having a rotary clutch lever for operating a simple clutch,
The handle adjustment lever and the rotary clutch lever are juxtaposed to each other in a position where the fingers of the same hand that grips one of the left and right grips can reach,
The handle adjustment lever extends in the front-rear direction, is pivotally supported so as to be swingable in the left-right direction, and is disposed inside the left and right grips,
The rotary clutch lever extends in the front-rear direction and is pivotally supported so as to be swingable in the up-down direction. The rotary clutch lever is disposed inside the left and right grips and between the grip and the handle adjustment lever in a plan view. ,
The handle adjustment lever is operated to swing in the horizontal direction, the rotary clutch lever is operated to swing in the vertical direction, and both are operated in directions orthogonal to each other. Management machine to do. 2. The management machine according to claim 1, wherein the handle adjustment lever is configured to be biased toward a handle fixing operation position separated from one grip after the handle height is adjusted, and to be held at the fixing operation position. The rotary clutch lever is configured to be able to hold the clutch-operated operation position where the finger-operated part is located below the grip and the clutch-disengaged operation position where the finger-operated part is located above the grip. Management machine characterized by.

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