JPH0429722Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a mulch sheet for an elevated work vehicle that continuously shapes ridges for planting tobacco seedlings, etc. and covers the shaped ridges with a mulch sheet. The present invention relates to a coating device.

BACKGROUND TECHNOLOGY Conventionally, in an elevated work vehicle with a four-wheeled body that continuously shapes ridges using a ridge-making machine and covers the shaped ridges with a multi-sheet, a ridge-making machine consisting of a rotor and a ridge-forming machine is used. An arm is provided at the rear of the ridge and is rotatable in the vertical direction, and a treading wheel that treads on the end of the mulch sheet covering the ridges and a covering disk that covers the treaded area by the treading wheel are attached to this arm. ing.

When shaping ridges and covering the shaped ridges with a mulch sheet using such an elevated work machine,
When the elevated work equipment reaches the edge of the field, the operator gets out of the driver's seat, rotates the arm upwards, moves the tread wheel and soil covering disk off the ground, and then turns the elevated work equipment. ing. After the rotation, the worker gets out of the driver's seat again, rotates the arm downward, and
Work resumed after the treadling wheels and soil cover disks were brought into contact with the ground.

Problems that the invention aims to solve: Every time the elevated work machine is moved around at the edge of the field, the worker gets off the elevated work machine and moves the arm up and down, causing the treading wheels and soil covering disc to separate from the ground and the ground. Grounding is being carried out. For this reason, it is extremely time-consuming, reduces work efficiency, and places a heavy burden on the operator.

Means for Solving the Problems A sub-tower that can be moved vertically and fixed at any position is provided on an elevated work vehicle with a four-wheeled vehicle body, and a ridge-raising work machine is connected to the lower end of the sub-tower. An arm that can rotate vertically around the axis of a support shaft is installed at the rear of the ridge-making machine, and this arm is equipped with a treading wheel that presses the mulch sheet covering the shaped ridges and a soil covering disk that covers the mulch sheet with soil. and install. The sub-tower is connected to a wire that rotates the arm in a direction in which the treading wheel and the soil-covering disk are separated from the ground as the sub-tower rises, and in a direction in which the tread-pressing wheel and the soil-covering disk are in contact with the ground as the sub-tower descends. Connect between the arms.

Function: When moving an elevated work machine around the edge of a field, when the sub-tower is raised to move the ridge-raising work machine away from the ground, the arm is rotated via the wire, and the treading wheel and soil covering are rotated accordingly. The disk separates from the ground. On the other hand, after the rotation, when the sub-tower is lowered to bring the ridge-making machine into contact with the ground, the arm is rotated via the wire, and the treading wheel and the soil-covering disk are brought into contact with the ground.

Embodiment A first embodiment of this invention will be described based on FIGS. 1 to 3. First, a transmission case 3 is fixed to the rear end of a chassis 2 of a four-wheeled elevated work vehicle 1 that travels on the ground, and an engine 4 is mounted on the upper part of the transmission case 3. An axle 5 extending in the left-right direction is provided at the lower end of the transmission case 3, and at both ends of the axle 5, upper ends of a pair of left and right transmission cases 6 are rotatable about the axis of the axle 5. connected. A rotating shaft 7 connected to the axle 5 through a sprocket and a chain (not shown) is provided at the lower end of the transmission case 6, and a rear wheel 8 is connected to the rotating shaft 7.

A main tower 9 extending upward is fixed to the front end of the chassis 2, and a step 10 extending forward is fixed to the lower end of the main tower 9. A panel cover 11 and a seat 12 are attached to the step 10, and a brake pedal 13 and a clutch pedal (not shown) are also arranged. Said panel cover 1
1 has a handle 14 and an accelerator lever 1 on the top surface.
5. A hydraulic lever 16 is disposed, and a front wheel steering device 19 is provided below the step 10 to steer the front wheels 18 in any direction via the front wheel steering device 17 as the handle 14 is rotated. is provided.

Next, a pair of upper and lower stays 20 are fixed to the main tower 9, and these stays 20
A sub-tower 22 parallel to the main tower 9 is held via a pair of front and rear rolling rollers 21 so as to be slidable in the vertical direction. A rearwardly extending frame 23 is fixed to the lower end of the sub-tower 22, and a tilling shaft 2 provided at the lower end of the rotary transmission case 24 is attached to this frame 23.
A ridge forming machine 29 is connected to the ridge forming machine 29, which is composed of a pair of left and right ridge shapers 28 connected to a rotor 26 connected to a rotor 26 and a T-shaped bar 27. The rotary transmission case 24 is fixed to the front end of the frame 23, and the T-bar 27 is inserted and fixed to a hitch 30 attached to the rear end of the frame 23 so as to be vertically adjustable. An arm 31 extending rearward is connected to the upper part of the T-shaped bar 27.
A multi-sheet support section 33 that supports the multi-sheet 32 is provided at the rear end of the arm 31.

Next, a subframe 34 is connected between the upper end of the main tower 9 and the rear part of the chassis 2, and a mounting stay 35 fixed to the subframe 34 has an upper end of a telescopic hydraulic cylinder 36. are connected. This hydraulic cylinder 36 is arranged substantially parallel to the main tower 9, and the lower end of the hydraulic cylinder 36 is connected to a mounting stay 37 fixed to the upper end of the rotary transmission case 24.

Next, a pair of left and right arms 38 are connected to the rotating shaft 7, which is a supporting shaft, and are rotatable in the vertical direction about the axis of the rotating shaft 7 and extend behind the rear wheel 8. Connected to 38 are a treading wheel 39 that treads both ends of the mulch sheet 32 pulled out from the mulch film support 33 and covering the ridges, and a soil covering disk 40 that covers the treaded portion of the mulch sheet 32 by the treading wheel 39. ing. In addition, the multi-sheet film 3 pulled out from the multi-film support section 33 is placed in the mission case 3.
A guide roll 41 is attached to guide 2.

Here, the inner wire 42 and the outer wire 43
A wire 44 having a double structure is provided. One end of the outer wire 43 is held by a holder 45 fixed to the chassis 2, and the other end of the outer wire 43 is held by a holder 46 fixed to the stay 20. Further, one end of the inner wire 42 is connected to the arm 3 provided at a predetermined distance from the rotating shaft 7.
The other end of the inner wire 42 is connected to a connecting portion 48 provided on the side surface of the sub-tower 22. The connecting portion 48 is located above the holder 46.

In such a configuration, when the elevated work vehicle 1 moves forward (in the direction of arrow a), the output shaft of the transmission case 3 and the rotary transmission case 24
propeller shaft 4 connected between the input shaft of
Power from the engine 4 is transmitted to the rotary transmission case 24 and the tilling shaft 25 via the rotor 9, and the rotor 26 rotates in the direction of arrow b. As a result of this rotation, the soil on the ground surface is tilled and accumulated on the rotary transmission case 24 side, and the ridges are shaped by the ridge shaper 28 located behind the rotor 26. At this time, the hydraulic cylinder 36 is extended and the sub-tower 22 is moving downward, and the sub-tower 22 is moving downward.
2, the distance between the holder 46 and the connecting portion 48 becomes smaller, and the tension on the wire 44 is eliminated. Therefore, the arm 38 rotates downward around the axis of the rotating shaft 7 due to the weight of the treading wheel 39, etc., and the treading wheel 39
9 and the soil covering disk 40 are maintained in a grounded state,
The mulch sheet 32 covering the ridges is treaded and the treaded area is covered with soil, and the work of covering the mulch sheet 32 is completed.

On the other hand, the hydraulic pump 50 is rotated by the power from the engine 4, and the hydraulic cylinder 36 is expanded and contracted by switching the hydraulic lever 16. As the hydraulic cylinder 36 expands and contracts, the ridge-making machine 29 vertically moves integrally with the frame 23 and sub-tower 22. Here, when interrupting the ridge-raising work or when rotating the elevated work machine 1 at the edge of the field, the hydraulic cylinder 36 is retracted to raise the sub-tower 22 and the ridge-raising work machine 29 is raised from the ground. alienate At this time, as the sub-tower 22 rises, the distance between the holder 46 and the connecting portion 48 increases, creating tension in the wire 44, and this tension causes the arm 38 to rotate upward around the axis of the rotating shaft 7. . As a result, the treading wheel 39 and the soil covering disk 4
0 is separated from the ground, the worker can move around without getting off the seat 12 and lifting the arm 38, improving work efficiency and reducing the worker's effort.

After the rotation, when the sub-tower 22 is lowered to restart the ridge-raising work and the ridge-raising work machine 29 is brought into contact with the ground, the arm 38 rotates downward due to the release of tension on the wire 44 as the sub-tower 22 descends, and the tread pressure is The ring 39 and the soil covering disk 40 are grounded.

Next, a second embodiment of this invention will be explained based on FIG. 4. In addition, the same parts as those explained in FIGS. 1 to 3 are indicated by the same reference numerals.
Explanation will also be omitted. A spring 51 is stretched between the arm 38 and the transmission case 6, and this spring 51 biases the arm 38 in the direction of upward rotation (in the direction of arrow c). Connecting portion 4 connecting one end of the inner wire 42 and the arm 38
7 is provided on the opposite side of the spring 51 with the rotating shaft 7 interposed therebetween, and is connected to a connecting portion 48 at the other end of the inner wire 42.
is provided below the holder 46. Here, during the ridge-raising work in which the sub-tower 22 is moved downward and the ridge-raising work machine 29 is grounded, the distance between the holder 46 and the connecting part 48 becomes large, and tension acts on the wire 44, causing the arm 38 rotates in the direction of arrow c', and the treading wheel 39 and soil covering disk 40 are in contact with the ground. When the sub-tower 22 is raised to rotate at the edge of the field, the distance between the holder 46 and the connecting portion 48 is narrowed, and the tension on the wire 44 is released. As a result, the arm 38 is connected to the spring 5.
The treading wheel 39 and the soil covering disk 40 are rotated in the direction of the arrow c by the biasing force 1, and the treading wheel 39 and the soil covering disk 40 are separated from the ground.

Effects of the invention Since this invention is configured as described above, when the sub-tower is raised in order to move the ridge-making machine away from the ground when moving around at the edge of the field, the treadling wheel and soil covering disk are moved to the ground. Therefore, the worker does not have to get out of the driver's seat and raise and lower the treadle wheels, etc. every time he or she makes a turn, which improves work efficiency and reduces the burden on the worker. Furthermore, since the raising and lowering of the sub-tower and the vertical movement of the treadle wheels etc. are linked via wires, the structure can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the first embodiment of this invention, Fig. 2 is a side view showing the state in which the treadling wheels etc. are raised as the ridge-raising machine rises, and Fig. 3 is a side view showing the wires on the sub-tower side. FIG. 4 is a rear view showing the connected state of the end portions in an enlarged manner, and FIG. 4 is a side view showing a second embodiment of the invention. 1... Elevated work vehicle, 7... Rotating shaft (support shaft),
22...Sub tower, 29...Ridge work machine, 32
...Multi-seat, 33...Multi-seat support section, 38...Arm, 39...Treading wheel, 40...
Soil covering disk, 44...wire.

Claims (1)

[Scope of utility model registration request] An elevated work vehicle with a four-wheeled vehicle body is provided with a sub-tower that is vertically movable and can be fixed at any position, and a multi-seat support section that supports multi-seats, and a ridge-raising work machine is connected to the lower end of the sub-tower, and a support shaft is provided. An arm capable of vertical rotation around an axis is provided at the rear of the ridge-raising work machine, and a treading wheel that presses the mulch sheet covering the ridges and a soil covering disk that covers the mulch sheet are attached to the arm. , the arm is rotated in a direction in which the treading wheel and the soil covering disk are separated from the ground as the sub-tower rises, and the arm is rotated in a direction in which the treading wheel and the soil covering disk are in contact with the ground as the sub-tower descends; A multi-sheet covering device for an elevated work vehicle, characterized in that a rotating wire is connected between the sub-tower and the arm.