JP3025969U - Agricultural work platform - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an agricultural aerial work vehicle that has a short overall length and can be easily transported. [Structure] A swivel arm 3a is fixed to a rear portion of a workbench 3 by welding or the like, and a horizontal shaft 4 for rotatably supporting the swivel arm 3a in a vertical direction is provided at a tip of a boom 2. With the horizontal shaft 4 as a fulcrum, the boom 2 is configured to project from the tip of the boom 2 or fall into the tip of the boom 2. [Effect] The storage space can be saved, and the transfer can be performed easily.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an agricultural aerial work vehicle used for general fruit tree management work such as pruning, pest control, or harvesting of fruits that grow on tall trees.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as an aerial work vehicle for agriculture, as shown schematically in FIG. The carriage 1 is a vehicle that has wheels or tracks 38 that are driven by a prime mover, and that runs, turns, or stops based on a command from an operation unit (not shown) provided on the workbench 3. The boom 2 swings up and down as the boom cylinder 13 expands and contracts, and the workbench 3 maintains a horizontal posture regardless of the swing of the boom 2.

[0003]

[Problems to be solved by the device]

 In the above-exemplified agricultural work vehicle, the boom 2 must be set to a considerably long length, with the maximum height of the boom 2 approaching the height of fruit trees such as apples (for example, about 3 m). I won't. Further, since the workbench 3 needs to be arranged so as to further project from the tip of the boom 2 so that a wide range of work can be performed with the trolley 1 stopped, the total length of the aerial work vehicle is further improved. become longer.

Therefore, when the agricultural aerial work vehicle is placed on the loading platform of a carrier standardized as a light vehicle, for example, the working platform is largely protruded from the loading platform and the public road is restricted due to legal restrictions. Since it becomes impossible to drive, it is necessary to prepare a large-sized transport vehicle or towing vehicle when transferring the agricultural work vehicle, which requires a large amount of work.

An object of the present invention is to provide an agricultural aerial work vehicle which has a short overall length and can be easily transferred.

[0006]

[Means for Solving the Problems]

 The agricultural aerial work vehicle according to claim 1 is an agricultural aerial work vehicle in which a work platform is supported on the tip of a boom installed on a trolley, and the rear part of the work platform is vertically attached to the tip of the boom. By providing a rotatably supported horizontal shaft, the workbench takes a posture in which it projects from the tip of the boom or falls inward of the boom with the horizontal shaft as a fulcrum.

According to a second aspect of the present invention, there is provided an agricultural aerial work vehicle in which the workbench is pivotally supported on the horizontal shaft via a swing arm extending inward from a rear portion of the boom to the boom. The swing arm is supported by a stopper provided on a side portion of the boom when it takes a posture of projecting from the tip of the boom.

An agricultural aerial work vehicle according to a third aspect of the present invention includes a first fixing tool for fixing the work platform to the boom when the work platform takes a posture in which the work platform projects from the tip of the boom; And a second fixing tool for fixing the work table to the boom when the work table takes a posture of falling toward the inside of the tip of the boom.

In the agricultural aerial work vehicle according to claim 4, the first fixing member includes a gripping piece that can swing up and down with a pin provided at a rear portion of the work table as a fulcrum, and a tip of the gripping piece. The hook includes a hook that is hung above the pin of the gripping piece, and a claw that is fixed to the tip of the boom and that locks the hook.

In the agricultural aerial work vehicle according to claim 5, the second fastener is a cylindrical holder fixed to the work table so as to be upright, and a slide shaft inserted into and retracted from the cylindrical holder. A fastening bolt for fastening the slide shaft to the cylindrical holder, and a locking member for locking the slide shaft fixed to the boom and protruding from the cylindrical holder.

In the agricultural aerial work vehicle according to a sixth aspect, a seat is detachably attached to the upper end of the slide shaft.

[0012]

[Embodiment of device]

 An agricultural aerial work vehicle according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Constituent elements common to the conventional technology are denoted by the same reference numerals to clarify the correspondence with the conventional technology.

As shown in FIG. 1, the agricultural aerial work vehicle according to the embodiment has a work table 3 rotatably supported on the tip of a boom 2 installed on a dolly 1. Specifically, the swivel arm 3a is fixed to the rear portion of the work table 3 by welding or the like, and a horizontal shaft 4 for supporting the swivel arm 3a so as to be rotatable in the vertical direction is provided at the tip of the boom 2. The work table 3 has a posture in which it projects from the tip of the boom 2 as shown in FIG. 2 with the horizontal axis 4 as a fulcrum, or a posture in which the work table 3 falls inward of the tip of the boom 2 as shown in FIG. It is configured to.

As shown in FIGS. 2 and 3, the boom 2 is provided on the carriage 1 by connecting a base end of a hollow undulating rod 6 having a rectangular cross section to one pivot 5 provided on the carriage 1. Further, the base ends of the connecting rods 8 extending through the hollow inside of the undulating rods 6 are connected to the other pivots 7, and the tips of the undulating rods 6 and the connecting rods 8 are connected to the lever pin 9 and the boom top pin, respectively. By connecting to the lifting lever 11 via 10 and supporting the workbench 3 with the lifting lever 11, the workbench 3 maintains a horizontal posture regardless of the vertical swing of the boom 2 during work. It is configured. Stoppers 12a for supporting the revolving arm 3a from below are provided on both side surfaces of the elevator lever 11 when the workbench 3 is in a posture of protruding from the tip of the boom 2. As shown in FIG. 1, the undulating rod 6 has a lower surface connected to a boom cylinder 13 arranged directly below the undulating rod 6 via a cylinder top pin 14.

As shown in FIG. 4, the lever pin 9 is attached near the tip of the undulating rod 6 while penetrating both side surfaces of the undulating rod 6. The lifting lever 11 is rotatably supported by both ends of the lever pin 9 protruding from the hoisting lever 6, and the space between the both sides of the hoisting lever 6 and the hoisting lever 11 is maintained. The spacer 15 is interposed. The horizontal shaft 4 rotatably pivots the swivel arm 3a together with washers 16 and 17 on the outer sides of the lifting levers 11 at both ends of the lever pin 9, and locks these to the lever pin 9. It is configured by binding with a nut 18 and a cap nut 19.

The lifting lever 11 is constructed by welding two lightweight steel sections 11a having an inverted L-shaped cross section and a steel sheet 11b so as to have a plan view gate shape, and melting a pair of mounting pieces 11c inside the steel sheet 11b. The boom top pin 10 is passed through the pair of mounting pieces 11c, and both ends of the boom top pin 10 are fastened with lock nuts 10a. One stopper 12a is fixed to each of the webs of the two light-section steels 11a, and an opening 11d for inserting a tool or the like when tightening or loosening the lock nut 10a is provided. Has been formed. The swivel arm 3a is formed by welding an engaging piece 12b having a substantially semi-circular cutout corresponding to the stopper 12a to a web of lightweight steel having an inverted L-shaped cross section.

The stopper 12a positions the workbench 3 by engaging the engagement piece 12b when the workbench 3 is in a posture of protruding from the tip of the boom 2 as shown in FIG. It is a thing. On the other hand, as shown in FIG. 1, the workbench 3 is provided with handrails 21a and 21b made of steel pipes at the peripheral edge of the bottom floor material 20, respectively, and a thin steel plate is curved on the legs of the handrails 21a and 21b. The kick plates 22a and 22b are welded to each other, and when the stopper 12a is engaged with the engagement piece 12b, the bottom floor material 20 is in a horizontal posture.

As shown in FIG. 2, a tubular holder 23 made of an upright steel pipe is welded to the inside of the handrail 21 a and the kick plate 22 a at the rear of the work table 3, and the seat 24 is seated on the tubular holder 23. Is detachably attached. Specifically, a sleeve 25 having the same diameter as that of the cylindrical holder 23 is fixed to the lower surface of the seat 24, while a slide shaft 26 is fitted into an upper end opening of the cylindrical holder 23, and the slide shaft 26 is By tightening a tightening bolt 27 that is screwed through the side surface of the holder 23 and is screwed, the holder can be tightened at an arbitrary height position.

The seat 24 can be attached to the cylindrical holder 23 by inserting the sleeve 25 into the upper end portion of the slide shaft 26. At this time, the height of the seat 24 can be adjusted by appropriately sliding the slide shaft 26 in the vertical direction. On the contrary, the seat 24 can be easily removed by removing the sleeve 25 from the upper end of the slide shaft 26. Incidentally, instead of the seat 24, for example, a container table may be detachably attached to the slide shaft 26 by the same method.

Further, as shown in FIG. 2, the workbench 3 is detachably fixed to the boom 2 via the first fastener 29 when the workbench 3 takes a posture of projecting from the tip of the boom 2. The first fastener 29 has a gripping piece 31 which can swing up and down with a pin 30 provided on the rear surface of the work table 3 as a fulcrum, and a gripping piece 31 which is hung above the pin 30. It consists of a lowered hook 32 and a hook-shaped pawl 33 fixed to the lifting lever 11 of the boom 2 in a side view. When the hook 32 is hooked on the pawl 33 and the gripping piece 31 is pulled up, A toggle is formed when the tip of the piece 31 crosses the pin 30.

In this state, when the boom cylinder 13 shown in FIG. 1 is extended to raise the undulating rod 6, the lifting lever 11 is pushed by the connecting rod 8 and the lever pin 9 is fulcrumed. 2 relative to the undulating rod 6 in the direction of arrow R in FIG. On the contrary, when the boom cylinder 13 is compressed to flatten the undulating bar 6, the elevating lever 11 is pulled by the connecting rod 8 and the lever pin 9 is used as a fulcrum against the undulating bar 6. Rotate relatively in the direction of arrow L. Therefore, the workbench 3 takes a fixed posture regardless of the boom angle of the boom 2.

Next, when the workbench 3 is tilted inward of the boom 2, the seat 24 is removed from the slide shaft 26, the tightening bolt 27 is loosened, and the slide shaft 26 is removed. The slide shaft 26 is fastened by pushing it into the upper end opening of the cylindrical holder 23 to make it sink and then tightening the tightening bolt 27 again. Subsequently, the grasping piece 31 of the first fixing tool 29 is pushed downward, the hook 32 is disengaged from the claw 33, and then the operator pushes the work table 3 inward of the boom 2. . As a result, as shown in FIG. 3, the workbench 3 rotates about the horizontal axis 4 as a fulcrum, and at the same time, the stopper 12a of the lifting / lowering lever 11 moves the engaging piece 12b of the swivel arm 3a. Separate.

In this state, the workbench 3 is close to the upper surface of the hoisting rod 6 of the boom 2 and is detachably fixed to the boom 2 via the second fastener 34 provided on the upper surface of the boom 2. . The second fastener 34 has a hooking member 35 having a shaft insertion hole 35a opened at a position corresponding to the upper end opening of the tubular holder 23, and is welded to the upper surface of the boom 2 so that the hooking member 35 is Further, a rod-shaped contact piece 36 which stands upright inward of the boom 2 is welded.

To fix the workbench 3 to the boom 2, the tightening bolt 27 is loosened and the slide shaft 26 is projected from the upper end opening of the cylindrical holder 23, so that the slide shaft 26 is moved to the second position. This can be performed by inserting the fixing shaft 34 into the shaft insertion hole 35a, abutting the slide shaft 26 against the contact piece 36 for positioning, and then tightening the tightening bolt 27 again to fasten the slide shaft 26 to the cylindrical holder 23. Conversely, the workbench 3 can be separated from the boom 2 by loosening the tightening bolt 27 and retracting the slide shaft 26 into the upper end opening of the cylindrical holder 23.

It should be noted that the pivot arm 3 a is pivotally supported on both ends of a lever pin 9 which is a pair of turns connecting the tip of the undulating rod 6 to the lifting lever 11, so that the lever pin 9 is supported by the horizontal shaft 4. However, the horizontal shaft 4 may be provided at another place.

[0026]

According to the agricultural aerial work vehicle of claim 1, when performing fruit tree management work, the work platform is tilted inward of the boom to keep the cart stopped. A wide working range can be secured, and the maximum height of the boom can be determined by tilting the workbench inside the tip of the boom when storing it in a warehouse or transporting it on a carrier. The total length of the agricultural aerial work vehicle can be reduced without reducing the overall length of the boom. Therefore, the storage space can be saved and the transfer can be easily performed.

According to the agricultural aerial work vehicle of claim 2, since the workbench is pivotally supported on the horizontal shaft via the swing arm extending from the rear portion to the inward end of the boom, the workbench is supported. When the robot is tilted inward at the tip of the boom, the entire workbench will be located further inside the tip of the boom than the horizontal axis. Moreover, since the stopper that supports the swing arm is provided on the side of the boom, when the workbench is in a position to project from the tip of the boom, there is nothing that projects from the tip of the boom, and the work platform of the agricultural aerial work platform does not. The total length can be shortened to the minimum.

According to the agricultural aerial work vehicle of the third aspect, when the workbench takes a posture in which it projects from the tip of the boom, the workbench can be fixed to the boom by the first fastener, so that fruit tree management work can be performed. It is possible to prevent the work table from swinging when performing, and to ensure the safety of work. In addition, when the workbench is in the posture of falling inside the tip of the boom, the workbench can be fixed to the boom by the second fixing tool, so that the workbench can be stored in a warehouse or placed on a transport vehicle for transfer. In addition, there is an advantage that the workbench can be prevented from being rotated carelessly.

According to the agricultural aerial work vehicle of claim 4, the work platform is set in a posture in which the work platform projects from the tip of the boom, the hook is hooked on the claw, and the gripping piece is pulled upward with the pin serving as the fulcrum. The workbench can be fixed to the boom, and conversely, the workbench can be separated from the boom by simply pulling the gripping piece downwards using the pin as the fulcrum, so the workbench can be fixed to or detached from the boom extremely easily and quickly.

According to the agricultural aerial work vehicle of claim 5, the worktable is in a posture in which the workbench is tilted inward of the tip of the boom, and the slide shaft is projected from the cylindrical holder to be fixed to the boom. The workbench can be fixed to the boom by hooking it on the material, and conversely, the workbench can be separated from the boom by immersing the slide shaft in the cylindrical holder. Easy to separate. Also, when the slide shaft protrudes from the cylindrical holder, the slide shaft can be fastened to the cylindrical holder with the tightening bolts. It will not accidentally come off from the latching member.

According to the agricultural aerial work vehicle of claim 6, by loosening the tightening bolt and appropriately sliding the slide shaft in the vertical direction on the cylindrical holder, the height of the seat mounted on the upper end of the slide shaft is increased. Adjustment can be performed. Further, by fastening the slide shaft to the tubular holder with the fastening bolt, the seat can be fixed at a desired height position. Further, since the seat is attached to the slide shaft which constitutes the above-mentioned second fixing tool, it is not necessary to attach a seat stay or the like separately to the workbench, and the number of parts can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of an agricultural aerial work vehicle according to an embodiment of the present invention.

FIG. 2 is a side view of essential parts when the work platform of the agricultural aerial work platform according to the embodiment of the present invention is in a posture in which it projects from the tip of the boom.

FIG. 3 is a side view of essential parts when the work platform of the agricultural aerial work vehicle according to the embodiment of the present invention is in a posture of falling toward the inside of the tip of the boom.

4 is a sectional view taken along line AA of FIG.

FIG. 5 is a schematic side view of a conventional agricultural work platform.

[Explanation of symbols]

 1 trolley 2 boom 3 workbench 3a swivel arm 4 horizontal axis 12a stopper 23 cylindrical holder 24 seat 26 slide shaft 27 tightening bolt 29 first fastener 31 gripping piece 32 hook 33 claw 34 second fastener 35 latching member

Claims (6)

[Scope of utility model registration request] 1. An agricultural aerial work vehicle in which a work platform is supported on the tip of a boom installed on a trolley, and a horizontal portion that supports the rear part of the work platform on the tip of the boom so as to be vertically rotatable. An agricultural aerial work vehicle characterized in that the workbench is provided with a shaft so as to project from the tip of the boom or to fall inward of the tip of the boom with the horizontal axis as a fulcrum. 2. The workbench is pivotally supported on the horizontal shaft via a swing arm extending from the rear portion thereof toward the inside of the boom tip,
2. The agricultural aerial work vehicle according to claim 1, wherein the swing arm is supported by a stopper provided on a side portion of the boom when the work platform takes a posture of projecting from the tip of the boom. 3. A first fastener for fixing the workbench to the boom when the workbench takes a posture in which the workbench projects from the tip of the boom, and a posture in which the workbench falls inward of the tip of the boom. The aerial work vehicle for agricultural purposes according to claim 1 or 2, further comprising a second fixing tool that fixes the work table to the boom when the work table is taken. 4. A gripping piece, wherein the first fastener is capable of swinging up and down with a pin provided at a rear part of the work table as a fulcrum, and is hung from the pin of the gripping part ahead of the pin. The agricultural aerial work vehicle according to claim 3, comprising a hook and a hook that is fixed to the tip of the boom and hooks the hook. 5. The tubular holder, wherein the second fastener is upright and fixed to the workbench, a slide shaft that is inserted into and retracted from the tubular holder, and the slide shaft is attached to the tubular holder. The agricultural aerial work vehicle according to claim 3 or 4, comprising a tightening bolt to be fastened, and a locking member fixed to the boom and locking a slide shaft protruding from the cylindrical holder. 6. The agricultural aerial work vehicle according to claim 5, wherein a seat is detachably attached to the upper end of the slide shaft.