JPH0732165Y2 - Mounting device for operating unit of traveling work machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an operation part mounting device for a traveling work machine such as a frost damage prevention device towed by a towing vehicle, and particularly to position adjustment and storability of the operation part. The present invention relates to an improved operation portion mounting device.

[Conventional technology]

For traveling work machines such as frost damage prevention machines and pest control machines towed by a towing vehicle, the operating section of the traveling work machine is operated so that the operator driving the towing vehicle can simultaneously operate various on-board equipment of the traveling work machine. Must be located near the seat. Further, when the traveling work machine is separated from the towing vehicle and stored, it is preferable that the operation section is brought closer to the traveling work machine to reduce the storage space.

In the conventional operation unit attachment device for a traveling work machine, (a) the operation unit is attached to the traveling work machine so that the amount of protrusion to the front can be adjusted (eg, Japanese Patent Publication No. 58-8904), (b). The operation part is detachable from the traveling work machine side, and is supported by the top link of the three-point link of the towing vehicle in the use position, and is pulled to the traveling work machine and connected in the storage position. It has become (Japanese Patent Application No. 61-301389
Specification and drawings).

[Problems to be solved by the device]

In the operating device of (a), the operating portion is adapted to adjust the amount of forward projection from the arm fixed to the front part of the traveling work machine, and also when the traveling work machine is connected to the towing vehicle. , The distance between the traveling work machine and the driver's seat of the towing vehicle is large, and in order to bring the operating unit sufficiently close to the driver's seat of the towing vehicle, the arm fixed to the front part of the traveling work machine and the arm The mounting member, which is movably supported on the front end portion and has the operation portion mounted thereon, is increased in size.

In the operating device of (b), the operating unit must have a structure that can be passed between the top link of the three-point link and the traveling work machine, which complicates the structure.

The purpose of this invention is to allow the operating part to be set sufficiently close to the driver's seat of the towing vehicle without increasing the size, and to simplify the structure to achieve switching between the use position and the storage position. An object is to provide an operating unit attachment device for a work machine.

[Means for Solving the Problems]

The invention will be described using the reference numerals of the drawings corresponding to the embodiments.

The operating part mounting device of the traveling working machine (10) of the present invention has the following components (a) to (d).

(A) A work device (16, 18,
20) A tow member (22) protruding forward from the center of the front part of a traveling work machine (10) including (20) (b) A hitch (26) (c) provided at the front end of the tow member (22) Lower part (52,54) and upper part (54,56) which are connected to each other to form a "V" shape.
The lower part (52, 54) is provided with a traction member (2
The upper part (54, 56) is pivotally supported by a fixing member (24) arranged near the front end of 2) so that it can swing back and forth, and the upper part (54, 56) is an operation for the working device (16, 18, 20) at the front end. Operation part mounting member (30) to which the part (28) is mounted (d) For use in which the upper parts (54, 56) of the operation part mounting member (30) project substantially horizontally toward the towing vehicle (32) A fixing means (80, 82, 86) for fixing the operation portion mounting member (30) to the fixing member (24) so that the operation portion mounting member (30) can be switched between the swinging position and the storage swinging position retracted toward the traveling work machine (10). [Operation] When the traveling work machine (10) is connected to the tow vehicle (32) to perform work by the traveling work machine (10), the operation portion mounting member (3
0) is fixed to the fixing member (24) at the swing position for use by the fixing means (80, 82, 86). As a result, the upper portion (54, 56) of the operating portion attachment member (30) is substantially horizontal.
2) Sufficiently overhangs, and the operation part (28) is
The position is extremely easy to operate from the driver's seat (38) in 2).

When the traveling work machine (10) is separated from the towing vehicle (32) and the operating section (28) is stored, the operating section mounting member (30) is fixed to the storing swinging position (80, 82, 86). ) Fixing member (2
It will be fixed to 4). As a result, the operating portion mounting member (30)
The upper parts (54, 56) of the same are located, together with the operating section (28), in a position sufficiently retracted into the traveling work machine (10).

The amount of protrusion of the traction member (22) from the traveling work machine (10) to the front is set to a minimum length such that the towing vehicle (32) and the traveling work machine (10) do not interfere with each other during a curve. The operation portion mounting member (30) has the lower end portion of the lower portion (52, 54) connected to the front end portion of the pulling member (22), and thus the operation portion (28).
Holds the relative position with respect to the towing vehicle (32) in the use swing position even if the amount of protrusion of the towing member (22) increases.

〔Example〕

 The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 8 is a schematic overall view in which a traveling work machine including an operating device according to the present invention is connected to a towing vehicle. The frost damage prevention machine 10 as a traveling work machine has a frame 14 supported by the tire 12, and the frame 14 has a blower 16 and an expandable and contractible bellows-like member disposed on the suction port side of the blower 16. The duct hose 18 and the telescopic boom 20 that is connected to the tip end and the intermediate part of the duct hose 18 to suspend and expand the duct hose 18 and to be rotatable at the base end,
Installed. The tow tube 22 is attached to the frame 14 so as to project forward from the frame 14, the hitch 26 is connected to the tip of the tow tube 22, and the operating portion 28 is connected to the tip of the tow tube 22 via the support 30. is doing. The tractor 32 as a towing vehicle has a front wheel 34 and a rear wheel 36, and a driver's seat 38 into which a worker gets in as a driver is provided. A pair of lower links 40 are attached to the rear of the tractor 32 so as to project rearward, and the swing drawbar 42 is coupled to the rear end of the lower links 40 and is detachably coupled to the hitch 26.

1 and 2 are a detailed side view and a plan view of a range including an operating device. Swing drawbar 42 in FIG.
Extends in the width direction of the tractor 32, is rotatably supported at the rear ends of the lower links 40, 40 at both ends, and has pin insertion holes 43 at appropriate intervals in the longitudinal direction. In FIGS. 1 and 2, the outer tube 44 is fixed to the front part of the frame 14 and projects forward. The traction pipe 22 is fitted to the inner periphery of the outer pipe 44 so as to be relatively movable in the axial direction, and a plurality of insertion holes 45 are formed in the traction pipe 22 and the outer pipe 44 at appropriate intervals in the longitudinal direction. After the amount of protrusion of the traction pipe 22 from the outer pipe 44 is appropriately adjusted, the bolt 46 is inserted into the insertion hole 45 of the outer pipe 44 and the traction pipe 22, and the nut 48 is screwed to the tip portion of the bolt 46, As a result, the relative position between the two is fixed. Also, the pin insertion hole 43 on the swing drawbar 42 is selected, the insertion hole at the front end of the hitch 26 is aligned with the selected pin insertion hole 43, the pin 50 is passed, and the hitch 26 can be rotated around the pin 50. Connected to the swing drawbar 42. The support 30 is a lower support tube 5 in which adjacent members are fitted to each other so that the amount of fitting can be adjusted.
2, consisting of an intermediate support pipe 54 and an upper support pipe 56, these 3
Of the individual members, the lower part (5
2, 54) and the upper portion (54, 56), the intermediate support tube 54 has a side shape of a "V" shape. Lower support tube 52,
A plurality of bolt insertion hole holes 58 are formed at appropriate intervals in the fitting portions of the intermediate support pipe 54 and the upper support pipe 56, and the bolts 60 are inserted into the selected bolt insertion holes 58 in each fitting portion. After that, the nut 62 is screwed into the tip portion to fix the fitting amount of the fitting portions of the lower support tube 52, the intermediate support tube 54, and the upper support tube 56. The operation unit 28 is attached to an upper support pipe 56 that horizontally extends forward, and is equipped with a hydraulic and water pressure adjusting lever 64 of the frost damage prevention machine 10 and a switching cock 66.

3 and 4 show the traction pipe 22, the hitch 26 and the lower support pipe.
FIG. 5 is a detailed side view and rear view of a joint portion with 52. The hitch bracket 68 has a circular hitch fitting portion 70 and a towing pipe fitting portion 72 at the top and bottom, and the hitch fitting portion 70 and the towing pipe fitting portion 72.
The front end portion of the traction pipe 22 and the rear end cylindrical portion of the hitch 26 are fitted to the inner circumferences of the respective. The rear end cylindrical portion of the hitch 26 is fitted into the hitch fitting portion 70 via a nut 71, and then fixed to the hitch fitting portion 70. Mounting brackets 24, 24 are applied to both side surfaces of the hitch bracket 68, and the bolt 74 includes a mounting bracket 24 as a fixing member, a front end portion of the traction pipe 22, and a traction pipe fitting portion.
After being inserted into 72, a nut 76 is screwed at the tip to fix the fitting 24 and the rear end of the hitch 26 to the tip of the traction tube 22. Two fixing bolts 80 are formed in each mounting member 24 so as to be on the same arc centered on the axis of the fulcrum bolt 78, one of the insertion holes 81 or 82 and the lower support pipe 52.
The support member 30 is inserted through the insertion hole to fix the swing angle of the support 30. The collar 84 is fitted to the fulcrum bolt 78 and the fixing bolt 80,
The size of each gap between the mounting brackets 24, 24 and the lower support pipe 52 is appropriately maintained. With the fixing bolt 80 removed, the lower support pipe 52 is rotatable around the axis of the fulcrum bolt 78. When the operating portion 28 is in the use position, the fixing bolt 80 is inserted into the front insertion hole 81 to project the support 30 forward, and when the operating portion 28 is in the retracted position, the fixing bolt 80 is in the retracted position. The support body 30 is brought close to the main body of the frost damage prevention device 10 by inserting 80 into the insertion hole 82 on the rear side.

FIG. 5 shows a modification of the mounting bracket 24. Mounting bracket of Fig. 5
24, the insertion hole 82 is omitted and the guide groove 68 is replaced by the fulcrum bolt.
It is formed in an arc shape centering on the axis of 78 and the fixing bolt 80
Is inserted into the insertion hole of the lower support tube 52 and also inserted into the guide groove 86. When the fixing bolt 80 is loosened, the supporting body 30 swings around the axis of the fulcrum bolt 78 while the fixing bolt 80 is guided by the guide groove 86. In the operating position of the operating portion 28, the fixing bolt 80 is located at the front end of the guide groove 86, and in the retracted position of the operating portion 28, the fixing bolt 80 is located at the rear end of the guide groove 86.

The operation of the embodiment will be described.

FIG. 6 shows the positional relationship between the frost damage prevention machine 10 and the tractor 32 when the tractor 32 curves. When the tractor 32 curves, the frost damage protector 10 rotates around the pin 50.
When the amount of forward projection of the tow pipe 22 from the outer pipe 44 is short, the front end of the left or right side portion of the frost damage prevention device 10 collides with the rear wheel 36 and the like, and prevents the tractor 32 and the frost damage prevention device 10 from traveling. . Therefore,
The forward projection amount of the towing pipe 22 from the main body of the frost damage prevention device 10 is preferably the minimum amount that can avoid the interference between the frost damage prevention device 10 and the tractor 32 during a curve.

FIG. 7 shows changes in the height and the like of the operating portion 28 at the use position, and the storage position and the use position of the operating portion 28. Outer tube
The withdrawal amount of the tow pipe 22 from 44 to the front is adjusted so that the tow pipe is
22 front protrusion amount, frost damage prevention device 10 and tractor at the time of curve
Amount that can avoid interference with 32. The height of the upper support pipe 56, that is, the operating portion 28 is changed by changing the fitting amount of the fitting portion between the lower support pipe 52 and the intermediate support pipe 54. By changing the amount of fitting of the fitting portion between the intermediate support pipe 54 and the upper support pipe 56, the forward extension position of the upper support pipe 56, that is, the operating portion 28 changes. By adjusting the height of the operating portion 28 and the forward projecting position, the operating portion 28 is adjusted to a position where an operator in the driver's seat 38 of the tractor 32 can easily operate. Since the support body 30 is coupled to the mounting metal fitting 24 attached to the front end portion of the traction tube 22, once the height of the operation portion 28 and the forward projecting position are adjusted, the support body 30 is then removed from the outer tube 44. Even if the amount of forward extension of the tow pipe 22 changes, the operating portion 28 in the driver's seat 38
The position of does not change. When the operating portion 28 is in the retracted position, the fixing bolt 80 is removed (in FIG. 5, the fixing bolt 80 is loosened), and the support 30 is rotated around the axis of the fulcrum bolt 78 to operate. The portion 28 is brought to a position close to the main body of the frost damage prevention device 10, and the fixing bolt 80 is tightened again to fix the support 30 at the rotating position.

In the embodiment, the frost damage prevention machine 10 is shown as a traveling work machine, but the traveling work machine to which the present invention is applied is a frost damage prevention machine.
It is not limited to 10 and may be other towed work machines such as a pest control machine.

[Advantages of the Invention] The operation portion mounting member having a "V" shape in side view is supported by the lower end portion of the lower portion by the front end portion of the towing member and swings the upper portion toward the towing vehicle side and the traveling work machine side. By doing so, the operating portion mounting member can be switched between the swinging position for use and the swinging position for storing. Therefore, when the operating portion is supported on the front part of the traveling work machine so as to be movable in the front-rear direction. In comparison, with less movement, that is, without increasing the size of the switching structure,
In the swing position for use, the operating portion can be brought sufficiently close to the driver's seat of the towing vehicle, and in the swing position for storage, the operating portion mounting member can be sufficiently retracted into the traveling work machine.

In the swinging position for use, the operating portion is not separated from the traveling work machine side and attached to the towing vehicle side, and both the swinging position for use and the swinging position for storage are connected to the pulling member on the traveling work machine side. Since they are connected via the mounting member, the structure for the position switching function is simplified.

In the embodiment in which the forward protrusion amount of the towing member from the traveling work implement is adjustable in order to avoid the interference between the towing vehicle and the traveling work implement at the time of a curve, the forward protrusion amount of the towing member is increased or decreased. In the swinging position for use, the operating portion can hold a position appropriately approached without moving away from the towing vehicle.

[Brief description of drawings]

The drawings relate to an embodiment of the present invention, and FIGS. 1 and 2 are detailed side and plan views of a range including an operating device, and FIGS. 3 and 4 show a traction pipe and a hitch and a lower support pipe. FIG. 5 is a detailed side view and rear view of the coupling portion, FIG. 5 is a view showing a modified example of the mounting bracket, FIG. 6 is a view showing a positional relationship between the frost damage preventer and the tractor when the tractor is curved, and FIG. FIG. 8 is a view showing a change in height of the operating portion in the use position and a storage position and a use position of the operating portion. FIG. 8 is a schematic view showing a traveling work machine equipped with the operating device according to the present invention connected to a towing vehicle. It is a general view. 10 …… Frost damage prevention machine (traveling work machine), 16 …… Blower (working device), 18 …… Duct hose (working device), 20 …… Telescopic boom (working device), 22 …… Traction pipe (traction member) ,twenty four…
… Mounting bracket (fixing member), 26 …… Hitch, 28 …… Operating part, 30 …… Supporting body (operating part mounting member), 32 …… Tractor (towing vehicle), 38 …… Driver's seat, 52 …… Down Side support pipe (lower part), 54 ... Intermediate support pipe (lower part, upper part), 56 ...
... Upper support tube (upper part), 80 ... Fixing bolt (fixing means), 82 ... Insertion hole (fixing means), 86 ... Guide groove (fixing means).

Claims (2)

[Scope of utility model registration request] (A) A towing member (22) projecting forward from the center of the front part of a traveling working machine (10) that is towable by a towing vehicle (32) and is equipped with working devices (16, 18, 20). (B) a hitch (26) provided at the front end portion of the pulling member (22), (c) lower parts (i.e., a hitch (26)) connected to each other so as to form a "F" shape in side view ( 52,54) and upper part (54,56)
The lower part (52, 54) is pivotally supported at its lower end so as to be able to swing back and forth to a fixing member (24) disposed near the front end of the pulling member (22), and at the same time, the upper part ( 54,56) is the working device (16,18,20) at the front end
Operation part attachment member (30) to which an operation part (28) for operation is attached, and (d) the upper part (54,5, 5) of the operation part attachment member (30).
6) is a swinging position for use, which extends substantially horizontally toward the towing vehicle (32), and a swinging position for storage retracted toward the traveling work machine (10). (3
Fixing means (80, 82, 8) for fixing (0) to the fixing member (24)
6), The operation unit mounting device for a traveling work machine, which has: 2. The hitch (26) is rotatably connected to the towing vehicle (32) side around a vertical line, and the towing member (22) protrudes forward from the traveling work machine (10). The operating part mounting device for a traveling work machine according to claim 1, wherein the operating model mounting device is adjustable.