JPH0430702A - Walking vegetable transplanter - Google Patents

Abstract

PURPOSE:To widen the rear wheel tread, to improve the stability to lateral inclination and to facilitate a sharp turn by using three wheels consisting of one front wheel and two rear wheels and making at least the front wheel to be drivable. CONSTITUTION:The walking-type vegetable-transplantation machine 1 is provided with one front wheel 15 at the lateral center of the front part of the machine body and two rear wheels 20 at both right and left sides at the rear part of the machine body. Among the above three wheels, at least the front wheel is made to be drivable. Since the machine body is supported by three wheels positioned at the apexes of an isosceles triangle, the machine body can be stabilized to facilitate the steering. The machine body can be gyrated around the front wheel acting as a driving wheel by swinging the rear part of the machine body to right or left direction while floating the rear wheels from the ground. Since the front wheel is driven, there is no problem of pushing the sheet-pressing soil with the front wheel in the running on a field covered with mulching sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a walking vegetable transplanter for transplanting seedlings of cabbage, Chinese cabbage, radish, etc., to a field.

[Conventional technology] A conventional two-row vegetable transplanter has a pair of left and right front wheels, which are drive wheels, located slightly forward of the center of the machine.
It was common to have a rear wheel that straddled the ridges of the row, and rear wheels that supported the rear of the fuselage on either the left or right sides or on one side.

[Problems to be Solved by the Invention] However, the above-mentioned conventional walking-type vegetable transplanter has a problem in that the tread of the front wheels is wide, so turning performance is poor, and large areas of piles are likely to be left behind in the corners of the field. Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration.

That is, the walking vegetable transplanter according to the present invention includes one front wheel provided at the left and right center portions of the front part of the machine body, and a pair of rear wheels provided at both left and right sides of the rear part of the machine body. It is characterized by driving at least the front wheels.

[Function] An isosceles triangle shape in which the planting work is carried out by running the front wheel along the groove in the center of the two ridges where the transplant is to be performed, and the pair of left and right rear wheels running along both sides of the two ridges. The aircraft is supported by three wheels placed at the apex of the aircraft, making it stable and easy to maneuver. By swinging the rear of the aircraft left and right while raising the rear wheels above the field, the aircraft turns around the front wheel, which is the driving wheel.Since there is only one front wheel, it is possible to turn in a small radius. . In addition, since the front wheels are driven, there is no risk of pushing the soil for holding down the sheet with the front wheels when driving through a field where the mulch sheet is spread.

[Example] The embodiments shown in the drawings will be described below.

FIGS. 1 and 2 show one embodiment of the present invention, and this walking vegetable transplanter 1 is equipped with an engine 2 and a front mission case 3 at the front of the machine body, and the left and right rear parts of the front mission case. A planting part transmission case 5 is provided extending rearward from the planting part transmission case 5, and a planting part transmission case 7 is provided at the rear end of the vertical vibro. A fixed cylinder 10 and a rotating cylinder 11 are separately protruded from both left and right side surfaces of the front transmission case 3. A rear wheel transmission case 12 extending rearward is attached to the fixed cylinder 1O, and a rear wheel transmission case 12 extending rearward is attached to the rotating cylinder 11. A front wheel chain case 13 is attached facing downward. A front wheel 15 located at the left-right center of the machine body is pivotally supported at the lower end of the front wheel chain case 13. In addition, the rear wheel transmission case 12
The rear end portion is connected to the planting portion transmission case 5 and a horizontal pipe 17 installed horizontally below the rear end of the vertical vibro. A rear wheel chain case 19.19 is attached rearward and downward to rotating tubes 18, 18 provided at both ends of the horizontal pipe 17, and a rear wheel 20.20 is pivotally supported at the lower end of the rear wheel chain case. There is.

From the planting section mission case 7 to the transplanting device transmission case 22
is provided to protrude rearward, and a pair of transplant devices 23, 23 are provided on both left and right sides of the rear portion.

Further, an operation box support rod 25 that protrudes rearward and upward is fixed to the upper surface of the transplant device transmission case 22, and an operation box 26 is provided at the upper end of the operation box support rod 25. The operation box 26 includes a control handle 27 and various operation levers 2.
8(a-c) are attached, 29 in Figure 0 is a camshaft protruding from the planting part mission case 7, and this camshaft 29 intermittently drives a hole digging device and a soil covering device (not shown). Cams 29a and 29b are attached. Note that the tip of the camshaft 29 is rotatably supported by a bearing member 30, 30 that is integrally provided with the planting section transmission case 5 and the vertical vibro.

Furthermore, a seedling stand 31 is supported by a support frame 32 and rails 33 so as to be slidable in the left-right direction on the toe portion of the body, the seedling stand 31 being slightly inclined so that the front portion is upwardly positioned. This seedling mounting stand 31 is partitioned into two seedling mounting sections 31a, 31a, and each seedling mounting section is provided with a seedling feeding belt 36 stretched between a pair of rollers 34, 35. Further, a receiving plate 39 in which a seedling takeout port 38, 38 corresponding to each seedling tray 31a, 31a is formed is provided adjacent to the rear end of the seedling tray 31 and fixed to the machine frame side.

The lateral movement mechanism of the seedling table 31 includes a horizontal lead cam shaft 41 having clockwise and counterclockwise lead grooves formed on its outer circumferential surface, and a lead fixed to the bottom surface of the seedling table 31 and engaged with the lead grooves. A member 42 is provided. When the lead cam shaft 41 is rotated in a predetermined direction by being driven from the planting section mission case 7 via the transmission means in the seedling platform drive case 43, the seedling platform 31 reciprocates in the left and right direction, and the seedling platform 31a
.

The seedlings in the last row on 31a are sequentially supplied to the seedling outlet 38.38. When the seedling platform 31 moves to the end of the left and right stroke, the seedling feeding belts 36, 36 rotate by a predetermined amount in a predetermined direction and transfer the seedlings backward by one row.

The transplant device 23 includes a first rotating case 51. which is rotatable relative to the transplant device transmission case 22. A second rotation case 52 rotatable with respect to the first rotation case, and a transplant case 53 rotatable with respect to the second rotation case, the transplant case 53
A pair of transplant claws 55° 55 and a seedling pusher 56 are provided. The position of the transplant claw 55.55 of each transplant device corresponds to the position of the seedling extraction port 38.38. By rotating the first rotation case 51 and the second rotation case 52 at a predetermined rotation ratio, the transplanted nail 55.55 is maintained in a constant posture and moves up and down in a closed loop while drawing a predetermined trajectory. At the upper part, the transplanting claws 55° 55 clamp the seedlings supplied to the seedling take-out port 38, and at the lower part of the trajectory, the seedlings are transplanted to the field. Immediately after transplantation, the seedling pusher 56 protrudes to prevent the seedling from being lifted up by the transplanting claws 55 and 55.

Note that the rear portion of the transplant device 23.23 is connected to the bearing member 30.
．． It is covered with a cover 58 that is supported by cover support plates 57, 57 attached to 30.

The planting depth is adjusted by raising and lowering the front wheels 15 and rear wheels 20° 20 relative to the aircraft body.As this planting depth adjustment mechanism, a hydraulic cylinder 60 is provided with its base side pivoted to a vertical vibro. The tip of the piston rod 60a is connected to a swing arm 61 projecting from the rotating cylinder 11. Further, another swing arm 63 protruding from the rotary cylinder 11 and a swing arm 64 protruding from the rotary cylinder 18 are connected by a connecting rod 65. When the piston rod 60a of the hydraulic cylinder 60 is protruded, the front wheel chain case 13 and the rear wheel chain case 19.19 rotate upward, and the front wheel 15 and rear wheel 20.20 provided at their tips move toward the fuselage. On the other hand, it moves upward. the result,
As the aircraft descends, the planting depth becomes deeper. Conversely, when the piston rod 60a is moved backward, the planting depth becomes shallower.

When working in the field, as shown in Figure 3, the front wheel 1 is placed in the groove 101b in the center of the ridge Zoo 100 where the transplant will be carried out.
5 into the grooves Iota and 101c on both sides of the ridge, and the rear wheels 20 and 2.
0 on the seedling platform 31 onto the ridge surface using the transplanting devices 23 and 23. The front wheels 15 and rear wheels 20.20, which are placed at the vertices of an isosceles triangle in plan view, support the aircraft, resulting in good front-rear balance, and the wide tread of the rear wheels 20.20 allows it to withstand horizontal inclines. It's stable. Fig. 3 shows the ridges covered with the mulch sheet, and the mulch sheet 103. ...
The grooves are covered with ±104 weights.

Currently, it is common to form ridges in units of two rows like this, and trenches 101a and 101c in the figure are filled with soil twice, and trench 1otb is filled only once. The grooves 101a and 101c are shallower than the grooves 101b.The vegetable transplanter of the present invention has a pair of rear wheels 20°20
Since both pass through the grooves 101a and 101C filled with soil twice, there is almost no lateral inclination.

Also, when the remaining amount of seedlings is low, the front wheels 15 tend to float relatively easily, but since the front wheels 15 are driving wheels,
The front wheel 15 does not spin and push the weight soil 104.

When turning, pull up the handle 27 and turn the rear wheel 20.20.
It is sufficient to raise the machine from the field and swing the rear part of the machine to the left and right. At this time, since the machine runs with only one front wheel 15, it is easy to turn and it is possible to turn in a small radius.

In the first embodiment described above, both the front wheel 15 and the rear wheels 20, 20 are used as driving wheels, but as in Example 1' shown in FIGS. 4 and 5, only the front wheel 15 is used as a driving wheel.

The rear wheels 20" and 20" are shown in the field scene-E as the aircraft advances.
Note that this vegetable transplanter 1' does not require a rear wheel transmission case, and instead of a rear wheel chain case, the rear wheels 20" and 20' are simply supported. Wheel support rods 19'', 19' are provided.

Moreover, FIGS. 6 and 7 show a further different embodiment, and this walking vegetable transplanter 70 has transmission pipes 71.
A transmission case 72.72 is provided at the tip of the transmission case 71, a frame pipe 73.73 extending rearward is fixed to the transmission case, and the center and rear end portions of this frame pipe are connected by horizontal pipes 75 and 76. .

A support pipe 77 whose left and right ends are connected to frame pipes 73.73 is provided near the rear of the horizontal pipe 75, and a pair of left and right planting portion me 2 John cases 7.7 are slid onto the support pipes, respectively. It is attached so that it can move freely. A transplanting device transmission case 22 is provided rearwardly protruding from each planting section mission case 7, and a transplanting device 2 is provided on one side of the rear side.
3 is provided one set at a time. Further, a bearing member 30.30 that supports the camshaft 29.29 is slidably attached to the support pipe 77, and a cover support plate 57.57 fixed to this bearing member 30.30 and the transplant device transmission case 22
．． 22 supports a cover 58.58 which covers the rear of the implantation device 23. This vegetable transplanter 70 is 1
A pair of left and right seedling stands 31.31 are provided for each row, and each seedling stand 31.31 is supported by a support frame 32.32 fixed to the transplanting device transmission case 22.22 and a rail 33 provided on the front transmission case L. It is supported so that it can slide in the left and right direction. The entire transplanting unit consisting of the transplanting device 32, seedling stand 31, etc. is individually moved in the left and right direction along the support pipe 77 using row spacing adjustment levers 78, 78 to adjust the spacing between the rows. . In addition, seedling stand 31
．． In order to prevent the 31 from interfering with each other, even if one transplanting device M32 is stopped, both seedling stands 31 and 31
Both are configured to continue the lateral movement.

Power is transmitted from the front transmission case 3 to the planting part transmission case 7.7 via a transmission pipe 71.71, a transmission mechanism in a transmission case 72.72, and a transmission shaft 80.80. The transmission shaft 80 is telescopic and connects to the shaft 72 on the transmission case side via a universal joint 81°81.
a and the planting part is connected to the shaft 7a on the transmission case side.

The front wheel 15 is located at the left-right center of the fuselage, and is pivotally supported by the rear end of a front wheel chain case 13 attached to the left side surface of the front transmission case 3 so as to be rotatable rearward and downward.

In addition, the rear wheels 20.20 are located on the left and right sides of the rear of the aircraft,
It is pivotally supported by the rear end portions of rear wheel support rods 83 and 83 attached to the rotating tubes 18 and 18 of the horizontal pipe 75 so as to face rearward and downward.

Hydraulic cylinder 6 for adjusting planting depth on the side of engine 2
0 is pivotally mounted, and the tip of the piston rod 60a is connected to a swing arm 84 protruding from the front wheel chain case 13, and the front wheel chain case 13 and the left and right rear wheel support rods 83, 83 are connected to a connecting rod 85. etc. are connected to operate in conjunction with each other. When the piston rod 60a of the hydraulic cylinder 60 is extended, the front wheel chain case 13 and the rear wheel support rods 83, 83 are rotated in the direction F, increasing the planting depth, and when the piston rod 60a is retreated, the front wheel chain case 13 and the rear wheel support rod 83. Case 13 and rear wheel support rod 83.8
3 rotates downward and the planting depth becomes shallower.

This vegetable transplanter 70 is configured to move the pair of left and right transplant units individually, so that the row spacing can be adjusted while the suspension remains fixed. Furthermore, since the transplant unit is surrounded by the frame pipes 73, 73 provided on the outside of the body, it is safe because accidents such as coming into contact with moving parts such as the transplant device can be prevented.

[Effects of the Invention] As explained above, the walking vegetable transplanter according to the present invention has three wheels, one front wheel and two rear wheels. Planting is carried out by running the front wheel in the groove of the ridge, and the pair of left and right rear wheels on both sides of the ridge. By turning the aircraft around the center, it became easier to make small radius turns.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of a walking vegetable transplanter according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view of a ridge, and FIGS. 4 and 5 are a side view of an embodiment of a walking vegetable transplanter according to the present invention. A side view and a plan view of the transplanter, and FIGS. 6 and 7 are a side view and an f-plane view of a different walking type vegetable transplanter. 1.1', 70...Walking vegetable transplanter, 3...Front me 7 section case, 7...Planting section transmission case, 12...Rear wheel transmission case, 13...Front wheel chain Case, 15...front wheel, 20.20'...rear wheel,
23... Transplant device, 31... Seedling stand.

Claims (1)

[Claims] (1) It is characterized by having one front wheel installed at the left and right center of the front part of the fuselage, and a pair of rear wheels installed at both left and right sides of the rear part of the fuselage, and driving at least the front wheel of these three wheels. Walking vegetable transplanter.