JPH10178811A - Planting depth adjustment device for transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve problems that machine body weight is increased and arrangement performance is deteriorated since the entire machine body constituted of heavy objects such as an engine, a traveling speed change device, a handle and a planting part, etc., is elevated and lowered by a linking mechanism utilizing a hydraulic device in a conventional transplanter. SOLUTION: One end of a front spindle 27 is fixed to a main machine for which the engine and a speed change device for traveling are arranged at the upper part of a driving wheel 12 traveling on a ridge groove, a traveling wheel is supported on the other end side of the front spindle 27, a supporting frame 31 is projected to the rear part of the main machine and a planting frame is supported to the front spindle 27 and the supporting frame 31 through a planting depth adjustment mechanism. The planting part 20 composed of a transplanting opening machine 21 and a seedling supply mechanism is held to the planting frame, the front part and rear part of the planting frame are freely vertically adjustably supported and a tail wheel positioned at the rear part of the main machine is freely vertically position adjustably attached to the supporting frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting depth adjusting device for a transplanter for planting seedlings such as vegetables and tobacco in a ridge.

[0002]

2. Description of the Related Art Conventionally, when seedlings such as vegetables and tobacco are mechanically planted on ridges by a self-propelled transplanter, the seedlings sequentially supplied from a seedling supply device are moved up and down while the machine is running. While holding the implant opener moving up and down, the implant opener was lowered toward the ridge surface to form the implant hole, and the nail portion of the implant opener was opened and held inside when ascending The seedlings are dropped into the transplant holes, and the roots of the seedlings are then crushed by a crushing device that runs backward. Then, depending on the height of the ridge on which the seedlings are planted, and the type or condition of the seedlings to be planted, the depth of planting on the ridges, that is, the depth of the transplant hole formed by the transplant aperturer (see FIG. 6). H2)
In order to change and adjust the distance (H1 in FIG. 6) between the lower end of the claw portion and the ridge groove on which the traveling wheel travels at the position where the transplantation opener is lowered most, it is arranged on the left and right sides of the transplanter body and the vehicle body. By operating the link mechanism that connects and supports the traveling wheels that have been moved up and down to move the entire body up and down in parallel, the depth of planting of seedlings by the transplantation opener, that is, the adjustment of the depth of the transplantation opener hole is adjusted. I was going.

[0003]

However, in a conventional transplanter which is configured to move the entire body in parallel by an up-and-down operation of a link mechanism interposed between the traveling wheel and the traveling wheel, the engine, the traveling The entire body composed of heavy objects such as the transmission, the handle, and the planting section must be moved up and down by the link mechanism. For this reason, the link mechanism is driven by using a hydraulic device, which further increases the weight of the body, which hinders the weight reduction and compactness of the body required for improving the handling performance. It has become.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, the drive wheels 12 traveling in the ridges
One end of a front support shaft 27 is fixed to the machine 13 in which the engine 2 and the traveling transmission 5 are arranged above the vehicle, and the traveling wheel 40 is supported on the other end of the front support shaft 27. The supporting frame 31 is projected further rearward, and the planting frame is supported by the front support shaft 27 and the supporting frame 31 via a planting depth adjusting mechanism. Holding the front and rear portions of the planting frame so as to be adjustable up and down.
9 is attached so that the vertical position can be adjusted.

[0005]

Next, an embodiment of the transplanter of the present invention will be described. 1 is an overall plan view of the transplanter, FIG. 2 is a left side view of the same in the advancing direction, FIG. 3 is a right side view of the same in the advancing direction, FIG. 4 is a front view of the same, and FIG. FIG. 6 is a side view of the planted portion equipped with the device, FIG. 6 is a side view of the planted portion, FIG. 7 is a side view of the planted portion of the plant raised, FIG. FIG. 3 is an exploded perspective view of the planting depth adjusting device.

First, the overall configuration of the transplanter of the present invention will be described with reference to FIGS. 1, 2, 3 and 4. An engine 2 is mounted and fixed to a front portion of the body frame 1, and a fuel tank 3 and a muffler 4 are attached to an upper portion of the engine 2. Mission case 5 behind the engine 2
A rear portion of the body frame 1 is attached to the transmission case 5 and protrudes forward, and a bumper 6 is provided at a front end thereof. A belt cover 8 having a transmission belt for transmitting power from the output shaft 7 of the engine 2 to the input shaft of the transmission case 5 is provided.

An upper portion of a chain case 10 in which a transmission chain is mounted is mounted on the other side surface of the transmission case 5, and an axle 11 projects in one direction from the lower portion of the chain case 10. The axle 11 has driving wheels 12
The drive wheel 12 and the engine 2 and the transmission case 5 are arranged in substantially the same range in the vertical direction when viewed from the front, so that the one-wheel management machine 13
Is configured.

A change lever 14 is provided on the upper part of the transmission case 5 to change the speed of the transmission rotation from the engine 2 to the drive wheels 12, and a base of a handle 15 is mounted on the upper part of the transmission case 5. . The handle 15 is provided with a tension clutch lever 16 for operating the tension roller of the power transmission belt of the belt cover 8 to intermittently transmit power from the engine 2 to the transmission case 5 by the power transmission belt, and an engine accelerator adjustment lever 17. Further, an auxiliary handle 18 is provided so that an intermediate portion of the bifurcated handle 15 is connected in an arch shape so that an operator can grasp the implant 15 during the transplantation operation.

At the rear of the body frame 1 (FIGS. 4 and 5), a front support shaft 27 is provided horizontally.
A traveling wheel 40 is supported on the other end side of the vehicle so as to be slidably fixed in the left-right direction. The traveling wheel 40 is driven by the power of the engine 2 via a transmission shaft 41, a swing transmission case 42, and a transmission mechanism in a transmission case 43. Driven. And running wheels 4
By moving the adjustment handle 44 of the expansion / contraction adjustment means 66, the movement of the body 0 is adjusted in the vertical direction, thereby enabling horizontal correction of the aircraft on a slope or the like. The tread can be changed by attaching and detaching the extension support shaft to and from the front support shaft 27.

A transplant portion 20 is provided on the side of the one-wheel management machine (the machine) 13 and above the ridge 19 located between the drive wheel 12 and the traveling wheel 40. As shown in FIG. 5, a front support frame 71 is fixed to the left and right substantially centers of the front support shaft 27 so as to adjust the horizontal slide position, and the front support frame 71 and a support fixed to the rear end of the transmission case 5. At the rear end of the frame 31, a planting frame on which the transplanting part 20 is disposed is supported via a planting depth adjusting mechanism of the present invention described later. That is, the transplant unit 2
The planting frame that supports 0 is a front frame 23,
A rear frame 24 and a pair of left and right support frames 25 and 26 for connecting the front frame 23 and the rear frame 24 in the front and rear directions. Is supported.

The transplanting section 20 is provided with a transplant opening device 21 and a seedling supply device 22. The seedling supply device 22 includes a rotating plate 34 driven by the power of the engine 2 through a transmission mechanism, Seedling cup 3 attached to the outer periphery of the rotating plate 34
5, a ring-shaped guide plate 36 in which a portion corresponding to a seedling drop position 61 for dropping seedlings is missing, and a shutter 37 that opens and closes the bottom of the seedling cup 35 by coming into contact with and separating from the inner surface of the guide plate 36. It is composed of

The implant opening device 21 includes a support frame 25.
A plurality of rotating plates are supported over a rotating plate 38 pivotally supported by the support frame 26 and a rotating plate 39 pivotally supported by the support frame 26.
The rotation plates 38 and 39 have their rotation axes decentered in the front-rear direction. The rotating plate 39 is driven and rotated by the power of the engine 2 via a transmission mechanism, and is rotated.
1 goes up and down.

A pair of left and right pressure-reducing wheels 45 and 46 are attached to the rear portions of the support frames 25 and 26 so as to be vertically rotatable, and are supported by a rod 47 having an upper end connected to the rear frame 24. Urged downward.

The support frame 31 includes a drive wheel 12
A tail wheel 49 located at the rear of the vehicle is attached. That is,
An outer cylinder 62a of the support pipe 62 is fixed to the support frame 31, and a tail wheel 49 is attached to a lower end of the inner cylinder 62b.
The upper end of 2b is screwed on the screw shaft of the adjustment handle 50, and by rotating the adjustment handle 50, the tail wheel 49 is raised and lowered, so that the tail wheel 49 can be adjusted up and down. The tail wheel 49 is swingable in the left-right direction, and the position of the stopper 52 is adjusted by tightening the fixed handle 51 so that the swing range of the tail wheel 49 can be set. A guide wheel 53 is mounted in front of the tail wheel 49, and the guide wheel 5
3 rolls along the side of the ridge 19.

Above the one-wheel management machine 13 and the transplanting section 20, there are provided seedling holders 54 and 55 for placing and storing the seedlings to be supplied to the seedling cup 35, respectively. The table 55 is rotatable toward the outside of the machine during the transplantation operation. Further, a locking portion 58 of a rope knob 57 of a recoil starter 56 of the engine 2 is provided on the seedling holder 54 above the one-wheel management machine 13.

Next, the planting depth adjusting mechanism of the present invention will be described in detail. As shown in FIG. 5 and FIG.
7, a support plate 28 protrudes forward from a front support frame 71, and a circular arc-shaped long hole 28a is opened in the support plate 28 in the vertical direction. As shown in FIG. Slots 28a at three locations in the top and bottom
Locking portions 28b, 28c, 28d having a diameter larger than that of the locking portions 28b, 28c, 28d are provided. However, four or more locations can be provided. On the other hand, a mounting plate 29 is protruded upward and rearward from a substantially right and left center of the front frame 23, and a screw hole 29 a is opened at a rear end of the mounting plate 29. The screw hole 29a and the screw portion 30a at the tip of the tightening handle 30 can be screwed together.
28c and 28d, and a handle 30 at the left end.
c is provided.

In this manner, the tightening handle 30 is inserted into one of the locking portions 28b, 28c, 28d and tightened into the screw hole 29a so that it can be supported and fixed on the machine side. The fixing position can be changed by loosening and sliding the screw portion 30a along the elongated hole 28a.

An end of a rear support shaft 70 that supports the rear frame 24 so as to be slidably fixed in the left-right direction is pivotally supported by a mounting plate 73, and a front end of the mounting plate 73 is connected to a rear end of the support frame 31. The mounting plate 73 is pivotally supported and has a screw hole opened at the rear end. On the other hand, a support plate 3 formed in a fan shape
2 is fixedly provided at a front portion of the support plate 32, and a rear portion of the support plate 32 is formed along the outer periphery in accordance with the shape of the long hole 28a.
a is opened and locking portions 32b, 32c, 32d are provided in the same manner as the locking portions 28b, 28c, 28d, and the tightening handle 33 is also configured in the same manner as the tightening handle 30. 33 can be fixed by tightening into a screw hole of the mounting plate 73.

In such a configuration, the front and rear tightening handles 30 and 33 are loosened and simultaneously slid in the long holes 28a and 32a, as shown in FIG.
When fixed at the position 32b, the transplant portion 20 is lifted, the height H1 of the transplant aperture 21 in FIG. 6 is increased, and the implantation depth H2 is reduced. Further, the front and rear tightening handles 30 and 33 are loosened and simultaneously slid in the elongated holes 28a and 32a, as shown in FIG.
When fixed at the position of 2d, the implanted portion 20 is lowered, the height H1 of the implant opener 21 is reduced, and the implantation depth H2 can be increased. A tail wheel 49 is mounted on the support frame 31 as shown in FIG.
Is raised and lowered, and the rear part of the planting section 20 is raised and lowered, so that the planting depth can be finely adjusted.

[0020]

As described above, the present invention has the following advantages. That is, it is easy to move the transplanting section up and down by manual operation without moving the transplanting section up and down manually without raising and lowering only the planting section without raising and lowering the entire body of the transplanting machine. The depth of planting can now be adjusted. And since it does not require a hydraulic device and has a simple configuration, the entire transplanter can be reduced in weight and size, and
The manufacturing cost can be reduced.

Further, in addition to adjusting the vertical position of the planting portion with respect to the machine prior to the start of the planting operation, the planter is mounted on the support frame while the planting operation is continued by running the transplanting machine. By making fine adjustments up and down with the tail wheel,
In a manner similar to the case where the entire body is vertically adjusted using a conventional hydraulic device, fine adjustment of the planting depth according to the progress of work can be performed simultaneously.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a transplanter.

FIG. 2 is a left side view in the traveling direction.

FIG. 3 is a right side view in the traveling direction.

FIG. 4 is a front view of the same.

FIG. 5 is a side view, partly in cross-section, with the airframe tilt adjusting device of the present invention in an extended position.

FIG. 6 is a side view in the same reduced position.

FIG. 7 is a side view showing a state where the planting section is raised.

FIG. 8 is a side view showing a state where the planting portion is lowered.

FIG. 9 is an exploded perspective view of the planting depth adjusting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 2 Engine 5 Transmission case 12 Drive wheel 13 This machine 21 Transplant opening machine 22 Seedling supply mechanism 20 Planting part 27 Wheel spindle 31 Support frame 40 Running wheel 49 Tail

Claims (2)

[Claims] 1. An end of a front support shaft is fixedly mounted on a machine in which an engine and a transmission for traveling are arranged above a drive wheel running on a ridge, and a running wheel is mounted on the other end side of the front support shaft. The support frame projects from the main frame, and the front support shaft and the support frame support the planting frame via a planting depth adjusting mechanism. The planting frame is mounted on the planting frame. A planting depth adjusting device for a transplanting machine, comprising a planting portion comprising: a front portion and a rear portion of the planting frame that are vertically adjustable. 2. The implanting depth adjusting device for an implanting machine according to claim 1, wherein a tail wheel located at the rear of the machine is attached to the support frame so as to be vertically adjustable.