JPH05111311A - Riding vegetable transplanter - Google Patents

Abstract

PURPOSE:To accurately control the planting depth of seedling by supporting a traction vehicle with a pair of supporting wheels and making the wheels to pass on a trodden track of the rear wheels of a riding-type traveling vehicle. CONSTITUTION:A traction vehicle 5 is supported by a pair of supporting wheels 23,23 placed at the position same as the wheels 26,26 of a riding-type traveling vehicle 2 by front view and pulled with the riding-type traveling vehicle. A working step 28 is attached to the traction vehicle, the height of the field surface is detected by a pitching sensor 60 of a transplantation machine 6 and the height of the transplantation machine is controlled according to the detected height of the field.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding vegetable transplanting machine in which a planting portion is towed by a riding vehicle body and used.

[0002]

2. Description of the Related Art A plurality of transplanters equipped with a seedling table on which seedlings are placed and a planting device for planting the seedlings on the seedling table are towed by a passenger traveling vehicle to simultaneously plant seedlings on a plurality of rows. There is a passenger vegetable transplanter. This kind of riding vegetable transplanting machine has a work step between the riding car body and each transplanting machine, so that the operator gets on this work step and supplies seedlings to the seedling mounting table of each transplanting machine appropriately. It has become.

[0003]

In a wide field where the above-mentioned riding vegetable transplanter is used, it is common to plant seedlings as they are in a flat field that has only been cultivated.
In this case, the height of the transplanting machine fluctuates due to the vertical movement of the riding vehicle due to the unevenness of the field, and the planting depth is not constant. There was a problem that.

[0004]

In order to solve the above problems, the present invention has the following constitution. That is, the riding vegetable transplanting machine according to the present invention is a riding vegetable transplanting machine in which a plurality of transplanting machines equipped with a seedling mounting table for mounting seedlings and a planting device for planting seedlings on the seedling mounting table in a field are towed by a riding traveling vehicle body. A towing vehicle that is towed by the support traveling wheel disposed at the same position as the wheels of the riding traveling vehicle in front view behind the riding traveling vehicle and is towed by the riding traveling vehicle. A sensor for detecting the height of a field scene provided on the transplanter, in addition to attaching a work step for a worker who supplies seedlings to the transplanter's seedling stand to attach the transplanter up and down to the tow truck. It is characterized in that the transplanting machine is appropriately moved up and down based on the detection result of.

[0005]

Since the pair of support wheels for supporting the towing truck pass through the traces of being stamped by the wheels of the passenger traveling vehicle body, there is little shaking or vibration of the towing truck. Since the work steps are attached to the tow truck, the seedling supply worker can stably perform the work. Further, since the raising / lowering control of the transplanter is performed with this towing trolley as a reference, the planting depth is constant without being influenced by the unevenness of the field scene.

[0006]

1 and 2 show a riding vegetable transplanting machine for lettuce. This riding vegetable transplanting machine 1 has a 3P link device 3 provided at a rear portion of a four-wheel tractor (passenger running vehicle body) 2 and a tow truck. 5 is attached, and further, five sets of transplanters 6, ... Are attached to the tow truck by a parallel link device 7.

The 3P link device 3 includes a pair of left and right lower links 11 and a top link 12 whose length is adjustable.
And a tip portion of a drive arm 15 driven by a hydraulic cylinder (not shown) and an intermediate portion of the lower links 11 and 11 are connected by lift rods 16 and 16, and the drive arm 15 is rotated. Then, the tow truck 5 is moved up and down by swinging the lower links 11, 11 up and down. Further, when the length of the top link 12 is adjusted, the attachment angle of the tow truck 5 can be changed.

The tow truck 5 is a front frame 21 connected to the rear ends of the lower links 11, 11 and the top link 12, and a support frame for the parallel link device 6, in front of and behind the horizontally mounted bogie frame 20. Rear frames 22 are vertically projected, and a pair of support wheels 23 are supported on both left and right sides of the bogie frame 20. The whole towing truck 5 is 3P
A pair of support wheels 23 in a state of being half-hung by the link device 3,
23 supported on the field scene. Support wheels 23, 23
Are arranged at the same positions as the front wheels 25, 25 and the rear wheels 26, 26 of the tractor 2 in a front view, and pass through the trails of the rear wheels 26, 26. A work step 28 is provided on the upper part of the trolley frame 20, and a seat 29 for a seedling replenishment worker is installed on the work step 28. Further, to the brackets 31 and 31 that project obliquely upward from the left and right ends of the trolley frame 20, the preliminary seedling mounts 32 and 32 having a plurality of shelves 31 on which the seedling boxes are mounted are attached. The bracket 31 is rotatably provided, and the brackets 31 and 31 face outward during the work, and the preliminary seedling stand 32 and 3 are placed.
The interval of 2 is expanded, and the brackets 31 and 31 are directed inward at the time of storage so that the interval between the preliminary seedling mounts 31 and 31 is narrowed. Further, a planting section mission case 36, which is transmitted from the tractor 2 via the transmission shaft 35, is provided in the front frame 21, and the planting section mission case 40 serves a transmission case 40 described later.
A transplanter transmission shaft 37 that is transmitted to the vehicle is disposed below the carriage frame 20.

The transmission cases 40 are shared by the five sets of transplanters 6, ... The transmission cases are used as a common frame and are integrally assembled with their front and rear positions aligned. Each transplanting machine 6 comprises a seedling mounting table 41 on which seedlings are mounted and a planting device 42 for planting the seedlings on the seedling mounting table in a field. Seedling stand 4
No. 1 is provided so that the front part is inclined so that it is reciprocated left and right, and the seedling take-out port 44 provided at the rear part.
Seedlings are sequentially supplied to. When the seedlings for one horizontal row have been supplied, the seedling feeding belt 45 is activated to transfer the seedlings on the table backward by one row. For lettuce, the angle α of the seedling stand 41
It is good to set it to about 25 degrees. The planting device 42 has a planting rod 46 that moves up and down along a predetermined endless track, and the seedlings supplied to the seedling take-out port 44 by a pair of transplanting claws 47 attached to the planting rod. It is designed to be sandwiched between plants and planted in the field. Soil after transplanting is a compression wheel 4
It is suppressed at 8,48.

The parallel link device 7 comprises the rear frame 22 and a pair of upper links 50, 5 rotatably attached to the rear frame.
The transmission case 40 of the transplanter is attached to the rolling shaft 53 which is composed of 0 and lower links 51, 51, and a connecting frame 52 connected to the rear ends of the upper and lower links, and which projects rearward from the connecting frame 52. A piston rod of a pitching cylinder 54 pivotally attached to the horizontal frame 20 on the base side is connected to a horizontal shaft 55 extending across a pair of upper links 50, 50. By expanding and contracting the pitching cylinder 54, five sets of transplants are transplanted. The entire planting section consisting of the machines 7, ...
Further, a piston rod of a rolling cylinder 57 provided substantially horizontally on the connecting frame 42 is connected to a connecting piece 58 fixed to the transmission case 40.
By expanding and contracting 7, the entire planting part is rolling shaft 5
Rotate 3 times.

On the lower side of the transmission case 40, three sled-shaped sensors 60, 61, 61 sliding on the field scene are provided. The central sensor 60 is a pitching sensor for detecting the height of the field scene, and the pitching cylinder 54 expands and contracts based on the detection result to maintain a constant planting depth of seedlings. In addition, the sensors 6 on both the left and right sides
Reference numerals 1 and 61 denote rolling detection sensors for detecting the left and right inclination of the field scene. Based on the detection result, the rolling cylinder 57 expands and contracts so that the planting depth of the seedlings in each row is always the same. To

When starting the work, each transplanter 6,
The seedlings are placed on the seedling mounts 41 of ..., and the seedlings are stacked on the shelves 31 of the spare seedling mounts 32. Then, the seedling replenishment worker gets into the work step 28 and starts the tractor 2 while transmitting power to the planting section. If the planting of seedlings progresses and the remaining amount of seedlings on the seedling mounting table 41, ...
32 seedlings are supplied on the seedling mounting table 41, ... at any time. The support wheels 23, 23 of the tow truck 5 are rear wheels 26, 26 of the tractor 2.
The tow truck 5 does not move up and down so much because it goes through the rut. Therefore, the seedling replenishing worker on the work step 28 can easily perform the work. Further, since the raising / lowering control and the rolling control of the transplanters 6, ... Are performed on the basis of the towing carriage 5 with little vertical fluctuation, these controls are accurately performed.

The riding vegetable transplanter shown in FIGS. 3 and 4 is for transplanting seedlings such as broccoli. The configuration in which the tow truck 5'is attached to the 3P link device 3 provided at the rear part of the tractor 2 is the same as in the first embodiment, but in this passenger vegetable transplanter 1 ', four sets of transplanters 6' ,. Each is set independently,
The transplanters 6 ', ... Are separately mounted on the tow truck 5'by parallel link devices 7' ,. Further, the support frames 22 ', ... Of the parallel link devices 7', ... Are slidably attached to the rails 70 provided on the tow truck 5 ', and the parallel link devices 7' ,. By shifting the mounting positions, the intervals between the transplanters 6 ', ... Can be changed, and the spacing between the transplants can be adjusted.

The transplanters 6'each have a transmission case 40 individually.
′ Is provided, and the seedling placing table 41, the planting device 42, which are the same as those in the previous embodiment,
Suppression wheels 48, 48 are provided. In the case of a transplanter for broccoli, the angle β of the seedling mounting table 41 is preferably set to about 15 degrees. In addition, a sled-like pitching detection sensor 60 'for detecting the height of a field scene is provided for each transplanter 6'.

The parallel link device 7'includes the support frame 22 '.
And a pair of upper links 50 ', 50' and lower links 51 ', 51' rotatably attached to the support frame, and a connecting frame 52 'connected to the rear ends of the upper and lower links. The transmission case 40 'of the transplanter is integrally provided on the connection frame 52'. The piston rod of a pitching cylinder 54 'pivotally attached to the support frame 22' at its base side is connected to a horizontal shaft 55 'extending across a pair of upper links 50', 50 ', and the pitching cylinder 54' is expanded and contracted. As a result, the transplanter 6 ′ moves up and down.

Based on the detection results of the pitching detection sensors 60 ', ..., The transplanting machines 6' ,. In the case of this passenger vegetable transplanter 1 ', too, the tow truck 5'
Since the supporting wheels 23, 23 of the vehicle pass through the tracks of the rear wheels 26, 26 of the tractor 2 and the vertical movement of the towing vehicle 5'is small, the pitching control is performed with high accuracy. Also, work step 2
It is also the same as in the previous embodiment that the seedling replenishing worker on No. 8 can perform the work safely and easily.

[0017]

As described above, in the riding vegetable transplanting machine according to the present invention, the transplanting machine is attached to the tow truck that is pulled by the riding traveling vehicle so that the transplanting machine can be moved up and down. The configuration is such that the transplanter is appropriately moved up and down based on the detection result of the sensor for detecting, and a pair of support wheels for supporting the tow vehicle passes through the traces of being stamped by the rear wheels of the riding vehicle. As a result, there is less shaking and vibration of the towing trolley, and it is now possible to accurately control the raising and lowering of the transplanter. In addition, since the work steps for replenishing seedlings are provided on the tow truck with less shaking and vibration, the worker can now perform seedling replenishing work safely and easily.

[Brief description of drawings]

FIG. 1 is an overall side view of a riding vegetable transplanting machine that is an embodiment of the present invention.

2 is a plan view of the riding vegetable transplanter shown in FIG. 1. FIG.

FIG. 3 is an overall side view of a riding vegetable transplanting machine according to another embodiment of the present invention.

FIG. 4 is a plan view of the riding vegetable transplanting machine shown in FIG.

[Explanation of symbols]

 1,1 'Passenger vegetable transplanter 2 Tractor (passenger vehicle body) 5,5' Tow truck 6,6 'Transplanter 7,7' Parallel link device 23 Support wheel 25 Front wheel 26 Rear wheel 28 Working step 41 Seedling platform 42 Planting device 60,60 'Pitching sensor 61 Rolling sensor

Claims (1)

[Claims] 1. A riding vegetable transplanter in which a plurality of transplanters equipped with a seedling platform for placing seedlings and a planting device for planting the seedlings on the seedling platform in a field are towed by a riding vehicle. Behind the traveling vehicle body, a tow truck supported by support wheels arranged at the same position as the wheels of the passenger traveling vehicle in front view and towed by the passenger traveling vehicle body is provided, and a seedling table for each transplanter is placed on the towing vehicle. In addition to mounting work steps for workers to replenish seedlings, the transplanter is attached to the tow truck so that it can be moved up and down, and transplanting is performed based on the detection result of a sensor for detecting the height of a field scene provided in the transplanter. A riding vegetable transplanting machine characterized in that the machine is appropriately moved up and down.