JPH0141666Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a handle rotation device for a mobile agricultural machine that has a handle rod that can turn freely in the front and rear directions of the machine body and can also rotate vertically and horizontally. be.

BACKGROUND ART Conventionally, some mobile agricultural machines have a handle rod that is rotated vertically or horizontally and fixed at an arbitrary position depending on the working conditions and type of work. Such mobile agricultural machinery has a handle vertical movement locking device that locks the handle rod at any position by rotating it in the vertical direction, and a handle horizontal rotation locking device that locks the handle rod at any position by rotating the handle rod in the horizontal direction. It is common to have two operating levers for intermittently operating the locking state of these locking devices.

Problems that the invention aims to solve: A clutch lever, an accelerator lever, etc. are attached to the handlebar, and it is difficult to install two operation levers for locking and disconnecting the locking device due to the installation space, and the number of parts increases. This is also leading to an increase in costs. Furthermore, when working in an orchard or the like, when there are many protruding parts such as various levers, branches or the like tend to get caught on the levers or the wires connected to the levers, which becomes an obstacle to the work. Furthermore, the presence of a large number of operating levers poses a risk of erroneous operation.

This idea was developed in view of these points, and it is possible to perform intermittent operation of the locking device that locks the vertical and horizontal rotation of the handle rod without providing a new operating lever. The object of the present invention is to obtain a handle rotation device for a mobile agricultural machine that can be operated using a clutch lever.

Means for Solving the Problem Two shafts 7 and 8 are provided close to each other in parallel to the body 6 of a mobile agricultural machine, and a plurality of rotating bodies 11 are connected to a pair of left and right side clutch levers 10 and 10'. 13 is fitted rotatably around the axis of one shaft 7, and a plurality of side clutch switching rotating bodies 1 are connected to a pair of left and right side clutches.
5, 16, and 18 are fitted so as to be rotatable about the axis of the other shaft 8, and are further connected to a handle vertical movement locking device 33 that rotates and locks the handle rod 1 in an arbitrary position in the vertical direction. The rotating body 22 for rotating the handle and the rotating body 20 for rotating the handle connected to the handle lateral rotation locking device 28 that rotates and locks the handle bar 1 to any position in the left and right direction are connected to the shaft 8 of the other shaft. The shafts 7 and 8 are fitted so as to be rotatable around the center, and one of the shafts 7 and 8 is provided so as to be slidable in the axial direction and fixed at any position.
Side clutch switching rotating bodies 15, 16, 18, handle rotation rotating bodies 20, 22, and rotating body 1
1 and 13 are selectively connected.

Function Side clutch switching rotating body 15, 16, 18
By switching the connection state between the handle bar 1 and the rotating bodies 20 and 22, even when the handlebar 1 is turned in the front-back direction of the machine body 6, the side clutch lever 10 on the left side of the machine body, the side clutch on the left side of the machine body, and the side clutch on the right side of the machine body are always connected. The clutch lever 10' and the side clutch on the right side of the fuselage are connected to prevent erroneous operation of the side clutch, and the rotating body 11,
13 and the rotating bodies 20 and 22 for rotating the handle, the handle vertically rotating lock device 33 and the handle's left and right rotating lock can be locked by operating the side clutch levers 10 and 10' without providing a new operating lever. The device 28 is kept in the locked state and the handle bar 1 is rotated to any position in the vertical and horizontal directions.

Embodiment An embodiment of this invention will be described based on the drawings. A handle rod 1 of a mobile agricultural machine is composed of a main handle portion 2 and a pipe handle portion 3, and the handle rod 1 can freely turn the handle in the front-rear direction of the machine body 6 using a boss portion 5 provided at the upper part of the transmission case 4 as a fulcrum. It is provided. In addition, handle rod 1
As will be described later, the pipe handle section 3 is provided so as to be rotatable in the left and right directions about the boss section 5 as a fulcrum, and to be fixed at any position, and the pipe handle section 3 is pivotable in the up and down direction about the connection section to the main handle section 2 as a fulcrum, as will be explained later. It is provided so that it can be moved freely and fixed at any position.

The main handle portion 2, which is a part of the body 6, is provided with two shafts 7 and 8 adjacent to each other and parallel to each other. One shaft 7 has a rotating body 11 connected to a left side clutch lever 10 via a wire 9, and a rotating body 13 connected to a right side clutch lever 10' via a wire 12.
are fitted to be rotatable around the axis of the shaft 7. First, a cylindrical body 14 is fitted into the other shaft 8 so as to be rotatable around its axis, and two side clutch switching rotating bodies 15 and 16 are fixed to the cylindrical body 14. The moving body 15 is connected to a right side clutch (not shown) via a wire 17. Further, a side clutch switching rotating body 18 is located between the side clutch switching rotating bodies 15 and 16 and is rotatably fitted to the outer periphery of the cylindrical body 14. It is connected to a left side clutch (not shown) via a wire 19. Next, a rotating body 20 for rotating the handle is rotatably fitted to the outer periphery of one end of the cylindrical body 14, and one end of a wire 21 is connected to this rotating body 20 for rotating the handle. Furthermore, a rotating body 22 for rotating the handle is rotatably fitted to the outer periphery of the other end of the cylinder 14, and one end of a wire 23 is connected to this rotating body 22 for rotating the handle. A gear portion 24 is formed in a part of the rotating bodies 11, 13, and the side clutch switching rotating bodies 15, 16, 18
A gear portion 25 that meshes with the gear portion 24 is also formed on the rotating bodies 20 and 22 for rotating the handle.

A bolt 26 is held in a portion of the main handle portion 2 close to the boss portion 5 so as to be rotatable about the axis thereof, and is urged in the direction of arrow a shown in FIG. 2 by the urging force of a spring 27. A lock pin 28 is provided as a locking device for rotating the steering wheel left and right. Said mission case 4
An index plate 29 is fixed to the upper part of the index plate 29, and a plurality of pin holes 30, into which the lock pins 28 engage, are arranged in the left-right direction. In addition, lock pin 2
The other end of the wire 21 is connected to the wire 8.

A cylindrical body 3 is located approximately at the center of the main handle portion 2.
1 is fixed, and a spring 3 is installed inside this cylindrical body 31.
A lock pin 33, which is a locking device for vertically moving the handle and is biased in the direction of arrow b by the biasing force 2, is slidably housed. Note that the other end of the wire 23 is connected to the lock pin 33. Further, a cylindrical body 35 having chrysanthemum seat portions 34 fixedly connected to both ends thereof is attached to the main handle portion 2 so as to be rotatable around a horizontal axis. An index 36 is fixed to this cylindrical body 35, and a plurality of pin holes 37 in which the front lock pin 33 engages are arranged in the index 36 in the vertical direction. Further, the chrysanthemum seat portion 34 has a chrysanthemum seat portion 38 formed at the tip of the pipe handle portion 3.
are engaged, and the chrysanthemum seat portions 34, 38 and the cylindrical body 3
It is tightened and fixed by a bolt 39 passing through 5 and a tightening screw 40.

Next, the shaft 7 is connected to the rotating bodies 11 and 1.
A switching lever 41 for sliding the shaft 7 is rotatably connected to one end of the shaft 7 about a support shaft 42 as a fulcrum. A guide 47 is formed in four guide grooves 43, 44, 45, and 46 at the other end of the shaft 7 and is fixed to the outer peripheral surface of the main handle portion 2.
A ball 48 that selectively engages with guide grooves 43, 44, 45, and 46 is housed in the ball 48 while being biased by a spring 49.

In such a configuration, FIGS. 1 and 2 show a state in which the handle bar 1 is rotated to an arbitrary position in the left and right direction. Gear part 2 of rotating body 13
4 and the gear part 25 of the rotating body 20 for rotating the handle are meshed with each other. When the side clutch lever 10' is squeezed, the rotating body 13 rotates around the axis of the shaft 7 in the direction of arrow c, and the engagement of the gear parts 24 and 25 causes the rotating body 20 for rotating the handle to rotate around the axis of the shaft 8. rotate in the direction of arrow d. As a result of this rotation, the wire 21 is pulled, and the lock pin 28 is rotated in the direction of arrow a' around the axis of the bolt 26 and removed from the pin hole 30. As a result, the handle rod 1 can freely rotate in the left and right directions around the axis of the boss portion 5. When the handle bar 1 is rotated to any position in the left and right direction and the hand is released from the side clutch lever 10', the lock pin 28 rotates in the direction of arrow a and engages with the opposing pin hole 30. Rotation in the direction is fixed.

Next, from the state shown in FIG.
By this operation, the shaft 7 is slid in the direction of arrow e, and the ball 48 is engaged with the guide groove 44. At this time, the rotating body 11 and the side clutch switching rotating body 18 and the rotating body 13 and the side clutch switching rotating body 16 are connected by meshing of the gear parts 24 and 25. This state is a normal working state in which the handlebar 1 is turned toward the rear of the fuselage 6 as shown in Fig. 3. When the left side clutch lever 10 is squeezed, the left side clutch is released and the right side clutch is released. When the side clutch lever 10' is squeezed, the right side clutch is disengaged, allowing the aircraft 6 to rotate smoothly.

Next, the shaft 7 is further slid in the direction of arrow e, and the ball 48 is engaged with the guide groove 45. At this time, the rotating body 11 and the side clutch switching rotating body 15 and the rotating body 13 and the side clutch switching rotating body 18 are connected by meshing of the gear parts 24 and 25. In this state, work is performed by turning the handle rod 1 toward the front of the machine body 6, and when the left side clutch lever 10 is squeezed, the left side clutch of the machine body 6 is released as seen from the operator, and the right side clutch lever is released. When grip 10' is squeezed, the side clutch on the right side of the machine body 6 from the operator's perspective disengages. Therefore, even when the handle is turned toward the front of the fuselage 6, there is no risk of erroneous operation of the side clutch, and moreover, the side clutch can be easily switched in response to the handle turn by sliding the shaft 7.

Next, the shaft 7 is further slid in the direction of arrow e, and the ball 48 is engaged with the guide groove 46. At this time, the rotating body 11 and the rotating body 22 for rotating the handle are connected by meshing of the gear parts 24 and 25. This state indicates a state in which the pipe handle portion 3 is rotated to an arbitrary position in the vertical direction. When the side clutch lever 10 is squeezed, the rotating body 11 and the rotating body 22 for rotating the handle rotate, and the wire 23 is rotated. pull. As the wire 23 is pulled, the lock pin 33 is pulled in the direction of arrow b' and is removed from the pin hole 37. By this,
The pipe handle portion 3 is vertically rotatable about the axis of the cylindrical body 35 together with the cylindrical body 35 and the index 36. Rotate the pipe handle part 3 to any position in the vertical direction, and press the side clutch lever 10.
When the hand is released, the lock pin 33 slides in the direction of arrow a and engages with the opposing pin hole 37, thereby fixing the vertical rotation of the pipe handle portion 3.

In this embodiment, only the pipe handle part 3 is moved up and down to move the handle rod 1 up and down, but a handle up and down movement locking device is provided near the attachment part of the main handle part 2 to the mission case. The main handle part 2 and the pipe handle part 3 may be moved up and down integrally.

Effects of the invention This invention slides the shaft to which the rotating body is attached or the shaft to which the side clutch switching rotating body is attached as described above in the axial direction, and the connection between these rotating bodies and the clutch switching rotating body is made. The side clutch can be switched by the simple operation of switching the connection state, and therefore, even when the handlebar is turned in the longitudinal direction of the aircraft, erroneous operation of the side clutch can be reliably prevented. Furthermore, by sliding the shaft, the rotating body for rotating the handle, which is provided coaxially with the rotating body for switching the side clutch, can be selectively connected to the rotating body, and by operating the side clutch lever, the rotating body can be selectively connected. The handle rod can be rotated in the vertical and horizontal directions by intermittent locking of the handle vertically rotating lock device and the handle horizontally rotating lock device connected to the rotating body for rotating the handle, and therefore, It is no longer necessary to provide a new operating lever for intermittent locking of the handle vertical movement lock device and the handle left/right rotation lock device, which reduces the number of parts and costs, making it easy to use when working in orchards, etc. It is possible to prevent levers from getting caught on branches, which has been a problem, and it is possible to prevent erroneous operation of levers that occurs due to the large number of levers.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a horizontal cross-sectional view showing the main part enlarged, FIG. 2 is a vertical cross-sectional side view showing the main part enlarged, and FIG. 3 is a side view of the whole. 1... Handle rod, 6... Airframe, 7, 8... Shaft, 10, 10'... Side clutch lever,
11, 13... Rotating body, 15, 16, 18... Rotating body for side clutch switching, 20, 22... Rotating body for rotating the handle, 28... Lock pin (handle left/right rotation lock device), 33... Lock pin (Handle vertical movement locking device).

Claims (1)

[Scope of utility model registration request] In a mobile agricultural machine having a side clutch mechanism and a handle rod that can freely turn the handle in the longitudinal direction of the machine body and freely rotate in any vertical and horizontal directions, two shafts are provided in parallel to the machine body in close proximity to each other. A plurality of rotating bodies connected to a pair of side clutch levers are fitted so as to be rotatable about the axis of one of the shafts, and a plurality of rotating bodies for switching side clutches are connected to a pair of left and right side clutches. A handle rotating body connected to the handle vertically moving lock device and a handle rotating body connected to the handle left and right rotating lock device are fitted together so as to be rotatable about the axis of the other shaft. , one of the shafts is provided to be slidable in the axial direction and fixed at any position;
A handle rotation device for a mobile agricultural machine, characterized in that the side clutch switching rotation body and the handle rotation rotation body are selectively connected to the rotation body.