JP2592988Y2 - Mounting device for the boom device of the boom sprayer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for a boom device of a boom sprayer for spraying a spray liquid on a field, and more particularly to a mounting device for efficiently attaching and detaching a boom device of a boom sprayer. is there.

[0002]

2. Description of the Related Art Japanese Utility Model Laid-Open Publication No. 63-157274 discloses a boom sprayer which is separated into a sprayer body including a chemical tank and the like and a boom device including a boom and the like. Discloses a mounting device for mounting on a boom receiving frame on the traveling body side.

[0003]

[Problem to be solved by the present invention]
In the mounting device disclosed in Japanese Patent No. 74, it is necessary to lift the boom device section manually and perform the attaching / detaching operation, which requires a large amount of labor. In addition, the boom receiving frame is hooked on the boom device portion and abuts on the boom device portion in a vertical plane to support the boom device portion. When the vehicle is removed from the frame and the vehicle is used, the weight of the vehicle increases, and when the boom receiving frame is attached to the front of the vehicle, the driver's seat of the vehicle is used. The visibility from is deteriorated.

Japanese Utility Model Application No. 3-50650 also discloses a mounting device for a boom device of a boom sprayer. In this mounting device, a hitch member mounted on a traveling body is moved up and down to raise the boom of the boom device. The mounting and dismounting work can be streamlined by allowing it to be freely inserted and removed from below into the mating part of the table, but when the hitch member is attached to the front part of the traveling body, the visibility and the weight burden of the traveling body are reduced. −157274
It has the same problems as the mounting device of the publication.

It is an object of the present invention to provide a mounting device for a boom device of a boom sprayer, while ensuring the efficiency of the attaching and detaching operation of the boom device, deteriorating the visibility of the traveling body and removing the weight when the boom device is removed. It is to be able to avoid the increase.

[0006]

The present invention will be described with reference to the drawings corresponding to the embodiments. The mounting device of the boom device section (26) of the boom sprayer (22) of the present invention has the following components (a) to (e). (A) a cradle (20) attached to the front of a self-propelled traveling body (10) and protruding forward; and (b) a cradle (20) capable of being crawlable on the cradle (20). Mast (36) standing up from part (40) and receiver (40)
(C) a boom mounting body (56) supported on the cradle (20) and supported vertically movably along the mast (36); and (d) boom mounting. A lifting cylinder (78) interposed between the body (56) and the mast (36); and (e) integrally attached to the boom mounting body (56),
A stand (62) for erecting the boom mounting portion (26) on the ground (16).
The expansion and contraction of 8) makes the boom mounting section (26) detachable from the receiving table (20), and also allows the boom (30) to move up and down during mounting.

[0007]

In the operation for mounting the boom device (26) on the traveling body (10), the boom device (26) is first erected on the ground (16) via the stand (62). The traveling body (10) is advanced toward the boom device section (26),
The cradle (20) is placed on the mounting portion (4) of the boom device (26).
0) Move to the lower side. By operating the lifting / lowering cylinder (78), the mounting portion (40) is lowered relatively to the boom mounting body (56), and is mounted on the cradle (20) and joined. Further, when the elevating cylinder (78) is operated, the stand (62) rises from the ground (16), and the weight of the boom device (26) is reduced to the cradle (2).
0), and is supported by the traveling body (10), and the boom device section (26) is mounted on the traveling body (10) via the cradle (20).

The boom device section (2) from the traveling body (10)
The detachment operation of 6) is performed in the reverse order. First, the lifting cylinder (78) is operated to lower the boom attachment (56), and the stand (56) attached to the boom attachment (56) is moved. 62) is attached to the ground (16), and the boom device section (26) is connected to the ground (16) via the stand (62).
To stand up. Further, the lifting / lowering cylinder (78) is operated to raise the receiver (40) from the pedestal (20) and separate it from the pedestal (20). Finally, the traveling body (10) is retracted from the boom device (26) and separated from the boom device (26).

In the spraying operation of the spray liquid, the boom (3
When adjusting the height of 0), use the lifting cylinder (78)
Is operated to increase or decrease the relative height of the boom mounting body (56) with respect to the mounting portion (40). The height of the boom (30) from the ground (16) is adjusted as a result of the relative height with respect to the cradle (20) being increased or decreased.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 6 is a side view of the agricultural tractor 10 on which the boom sprayer 22 is mounted. The agricultural tractor 10
A front wheel 12 and a rear wheel 14 are provided, and by driving them, the ground 16 can be freely driven. The frame 18 and the cradle 20 are attached to the rear part and the front part of the agricultural tractor 10 so as to protrude rearward and forward of the agricultural tractor 10, respectively. The boom sprayer 22 includes a sprayer body 24 mounted on the frame 18 at the rear of the agricultural tractor 10 and a cradle 2 at the front of the agricultural tractor 10.
0 and a boom device section 26 which is detachably attached to the boom device section 26. The sprayer main body 24 is equipped with a chemical tank 28 for storing a chemical, a pump (not shown) for pumping the chemical in the chemical tank 28 toward the boom device 26, and the like.
The boom device 26 is equipped with a boom 30 and the like. The boom 30 is horizontally extended to the side of the agricultural tractor 10 during the spraying operation of the chemical solution, and a nozzle pipe (not shown) is provided.
Is suspended from the boom 30 and equipped with a plurality of nozzles (not shown) at regular intervals in the longitudinal direction of the boom 30.

FIG. 5 is an enlarged side view of the cradle 20. The cradle 20 has a locking pin 32 protruding upward on the agricultural tractor 10 side (right side in FIG. 5), and has a left-right horizontal direction on the left and right sides on the tip side (left side in FIG. 5). And is attached to the front of the agricultural tractor 10 so as to project horizontally forward of the agricultural tractor 10.

FIGS. 2 and 3 are a side view and a front view of the boom device 26 (as viewed from the front of the agricultural tractor 10). The pair of masts 36 are arranged side by side on the left and right, and extend in the vertical direction. The plurality of crossbars 38 are arranged at appropriate intervals in the vertical direction, are fixed to the mast 36 at both ends, and connect the masts 36. The horizontal member 40 projects from the lower end of the mast 36 at a right angle, and the inclined member 42
Have masts 3 at both ends so as to form a substantially right-angled isosceles triangle with the mast 36 and the horizontal member 40.
6 and the front end of the horizontal member 40.
Such right-angled isosceles triangles are formed on the left and right sides of the boom device 26, respectively. The collar 44 is fixed to the distal end of the horizontal member 40, and has a pin hole 46 into which the locking pin 32 of FIG. 5 is inserted from below. The guide plates 48 and 50
Each is fixed to the middle part and the base end of the horizontal member 40,
It hangs down from the horizontal member 40. The guide plate 50 has a pin hole 52 penetrating in the left-right horizontal direction. Lifting frame 5
Reference numeral 4 denotes a vertically long rectangular shape lacking a lower side, and is connected to a horizontally long rectangular boom mounting frame 56 at a lower end portion. The guided portions 58 are respectively disposed on the left and right sides of the boom mounting frame 56, are fixed to the boom mounting frame 56 via upper and lower stays 60, and have a mast 36 having a groove-like cross-sectional profile (the plan view in FIG. 4). (See FIG. 3) from the outside in the left-right direction while being guided in the up-down direction. The pair of stands 62 is vertically movably inserted into cylindrical guides 64 on the left and right sides of the boom mounting frame 56, and the amount of downward projection from the cylindrical guide 64 is freely adjustable. The boom device 26 is fixed to the frame 56 and supported on the ground 16 in an upright state.

FIG. 4 is a plan view showing a state where the boom device section 26 is mounted on the cradle 20. 3 and 4,
The boom 30 includes a proximal portion 6 that is swingably coupled to each other.
8 and a distal portion 70. Expansion cylinder 7
2 includes a proximal portion 68 and a distal portion 7 at both ends.
0 so that the distal end portion 70 can be expanded and contracted with respect to the proximal end portion 68 by expansion and contraction. The swing joint 74 connects the base end of the base end portion 68 to the boom mounting frame 5 so that the base end portion 68 swings right and left in the horizontal plane.
6 to the center. The direction switching cylinder 76 is turned around the left end of the boom mounting frame 56 at both ends (the left-right direction of the agricultural tractor 10 is the left-right direction of the boom device 26) and a predetermined link end of the swing joint 74. It is movably connected, and the base end portion 68 is swung to the left and right around the swing connection portion 74 by expansion and contraction. Lifting cylinder 78
Are rotatably connected to a cross bar 38 below the mast 36 at upper and lower ends, and to a pair of stays 80 projecting from the upper end of the lifting frame 54 to the inside of the mast 36. The 54 and the boom mounting frame 56 are moved up and down with respect to the horizontal member 40.

FIG. 1 is a side view showing a state where the boom device section 26 is mounted on the cradle 20. The horizontal member 40 is placed on the upper surface of the cradle 20, and the locking pin 32 of the cradle 20 is
The collar 44 is fitted into the pin hole 46 of the collar 44 from below, and a bolt 82 from the upper side of the collar 44 is screwed in, and fixed to the collar 44. Further, the locking pin 84 is inserted and locked into the pin hole 52 of the guide plate 50 and the pin hole 34 (FIG. 5) of the receiving base 20. The horizontal member 40 is firmly fixed to the cradle 20 by bolts 82 and locking pins 84.

The operation of the embodiment will be described. In the mounting operation of the boom device section 26 to the agricultural tractor 10, FIG.
As shown in FIG. 3, the stand 6 of the boom device 26 is positioned so that the horizontal member 40 is at a position slightly higher than the cradle 20.
2 is projected downward, the lower end of the boom device 26 is attached to the ground 16, and the boom device 26 is supported on the ground 16 in an upright state. Next, the agricultural tractor 10 is advanced so that the cradle 20 is located below the horizontal member 40 of the boom device section 26. At this stage, the hydraulic devices of the boom device 26, such as the lifting cylinder 78, are connected to the hydraulic pump on the agricultural tractor side and are made operable. Next, the elevating cylinder 78 is extended to lower the horizontal member 40 relative to the stand 62. Horizontal member 4 to cradle 20
At the time of the descent of 0, the guide plates 48 and 50 of the left and right horizontal members 40 guide the left and right sides of the cradle 20 so that the center line in the left and right direction of the boom device unit 26 moves in the left and right direction of the cradle 20 Make it coincide with the center line. While the horizontal member 40 is placed on the cradle 20, the bolt 82 is screwed into the locking pin 32 in the pin hole 46 of the collar 44, and the locking pin 84 is connected to the pin hole 52 of the guide plate 50 and The boom device 26 is fixed to the cradle 20 by inserting the cradle 20 and the horizontal member 40 into each other by passing through the pin hole 34 of the horizontal member 40. Further, when the lifting cylinder 78 is extended, the lower end of the stand 62 rises from the ground 16 and the horizontal member 4
0 is placed on the cradle 20, and the weight of the boom device 26 is supported by the agricultural tractor 10 via the cradle 20.

Boom device 2 from agricultural tractor 10
6 is performed in the reverse order. First, the lifting cylinder 78 is reduced, the lifting frame 54 is lowered, and the lower end of the stand 62 attached to the lifting frame 54 is attached to the ground 16. And the boom device 2 via the stand 62
6 stands on the ground 16. Bolt 82 and locking pin 8
After removing 4, the lifting cylinder 78 is further reduced, and the horizontal member 40 is raised from the pedestal 20 and separated from the pedestal 20. Finally, the agricultural tractor 10 is retracted from the boom device 26 and separated from the boom device 26.

When adjusting the height of the boom 30 in the spraying operation of the chemical solution, the elevating cylinder 78 is expanded and contracted to
The relative height of the lifting frame 54 with respect to the horizontal member 40 is increased or decreased. The height of the boom 30 from the ground 16 is adjusted as a result of the relative height with respect to the cradle 20 being increased or decreased.

In the embodiment shown, the sprayer main body 24 of the boom sprayer 22 is mounted on the agricultural tractor 10, but the mounting device of the present invention comprises the agricultural tractor 10 and the sprayer main body 24 of the boom sprayer 22. However, the sprayer body 24
It is needless to say that the present invention is also applicable to a self-propelled traveling body.

[0019]

According to the present invention, since the traveling body is only equipped with the cradle that projects substantially horizontally forward, the boom device is removed from the traveling body and the traveling body is used. Thus, the visibility of the traveling body from the driver's seat is improved, and the weight burden on the traveling body is greatly reduced.

According to this invention, the boom device can be erected on the ground via the stand attached to the boom mount, and is placed on the cradle when the boom device is mounted on the traveling body. Since the mounting portion and the boom mounting body to be engaged are relatively movable up and down by the elevating cylinder, the mounting portion is placed on the receiving table when attaching and detaching the boom device, and Separation is facilitated, and the efficiency of the attaching / detaching operation can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a state in which a boom device is mounted on a cradle.

FIG. 2 is a side view of a boom device.

FIG. 3 is a front view of a boom device.

FIG. 4 is a plan view showing a state in which the boom device is mounted on a cradle.

FIG. 5 is an enlarged side view of the cradle.

FIG. 6 is a side view of an agricultural tractor equipped with a boom sprayer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Agricultural tractor (traveling body) 16 Ground 20 Receiving stand 22 Boom sprayer 26 Boom device part 30 Boom 36 Mast 40 Horizontal member (Placement part) 56 Boom mounting frame (Boom mounting body) 62 Stand 78 Elevating cylinder

Claims (1)

(57) [Scope of request for utility model registration] 1. A receiving stand (20) attached to a front portion of a self-propelled traveling body (10) and protruding forward, and (b) a mounting engagement with the receiving stand (20). A boom mounting part (26), which is made up of a mounting part (40) that can be used and a mast (36) standing upright from the mounting part (40) and supported by the cradle (20); A boom mounting body (56) supported vertically movable along a mast (36); (d) the boom mounting body (56) and the mast (36)
And (e) a stand (e) integrally attached to the boom attachment body (56), which erects the boom attachment portion (26) on the ground (16). 62) a boom sprayer that allows the boom mounting portion (26) to be attached to and detached from the cradle (20) by expansion and contraction of the lifting cylinder (78), and also allows the boom (30) to be vertically movable when mounted. A mounting device for the boom device section.