JPH11299409A5 - - Google Patents

Description

[0008]
[Means for solving the problem]
In order to achieve this object, the invention described in claim 1 is a riding work machine for tea fields that has a riding vehicle body that straddles tea ridges using a pair of left and right crawler traveling devices and moves self-propelled between the rows on both sides, and that has a chemical solution tank and a retractable nozzle pipe for multiple rows that communicates with the chemical solution tank, and that is equipped with a pest control device that extends the retractable nozzle pipe above the tea trees to spray chemical solution, and is characterized in that it has a chemical solution spray nozzle that communicates with the chemical solution tank at a position rearward of the crawler traveling device in the forward direction and on both sides of the tea trees in the width direction , and that the chemical solution spray nozzle is configured to be able to face the base of the tea trees.

The invention described in claim 2 is characterized in that, in the riding-type working machine for tea fields described in claim 1, the chemical solution spray nozzle is supported so as to be slidable in the vertical direction of the tea plants via a detachable mounting member attached to a body frame connected to the crawler running device.

The invention described in claim 3 is characterized in that, in the riding-type working machine for tea fields described in claim 1, the chemical solution spray nozzles are arranged on the legs of the body frame connected to the crawler running device so that the spray angle can be adjusted .

[0011]
[Effect]
In the invention of claim 1, the pest control device is equipped with a tiltable nozzle pipe that sprays chemicals from above the tea plants, and by attaching chemical spray nozzles to a position behind the crawler travelling device in the forward direction and on both sides of the tea plants in the width direction, chemicals can be sprayed to the base of the tea plants. In particular, in addition to spraying chemicals from above the tea plants using the tiltable nozzle pipe, chemicals can also be sprayed from the base of the tea plants using the chemical spray nozzles.

In the invention described in claim 2, the chemical spray nozzle is slidably supported by a detachable mounting member on the body frame connected to the crawler running device, so that the chemical spray nozzle can be retrofitted to a riding work machine for tea fields that is only equipped with a retractable nozzle pipe, and moreover, it can be positioned relative to the mounting member so that the chemical solution can be sprayed most effectively onto the base of the tea plants.

In the invention described in claim 3, the chemical solution nozzles are arranged on the rear legs of the body frame connected to the crawler traveling device in the forward direction, each with an adjustable spray angle.Therefore, unlike when they are positioned in front of the crawler traveling device in the forward direction, they do not come into contact with the tea plants, and the chemical solution can be sprayed onto the base of the tea plants without causing uneven spraying of the chemical solution across the width of the tea ridges.

Next , the pest control device equipped on the passenger vehicle body 1 will be described. As shown in Figures 1 and 2, the water injection device 12 is installed in an upright position in the front center of the passenger vehicle body 1, and comprises a water injection pipe 12c to the upper end of which is fixed a connecting fitting 12b having left and right lock levers 12a, left and right opening and closing valves 12f, 12f having cocks 12e, 12e connected to the lower end of the water injection pipe 12c via a T-pipe 12d, and left and right water injection hoses 12g, 12g having one end connected to each opening and closing valve 12f, 12f and the other end connected in communication with the upper front surface of the left and right chemical liquid tanks 13, 13, respectively.

In addition, reference numeral 7a in Figure 3 indicates a tension clutch lever that controls the operation and stop of the power sprayer 7, reference numeral 36 indicates an air cleaner that forms part of the intake system of the engine 4, reference numeral 38 indicates a fuel tank for the engine 4, reference numeral 39 in Figures 1 and 2 indicates a step for an operator to get on and off that is attached to the front of the body frame 2, reference numeral 37 in Figure 1 indicates a guide pipe attached to the outside of the crawler traveling devices 3, 3, and reference numeral 40 indicates a throttle lever for the engine 4 that is attached to the operation box 9.

Meanwhile, a spray nozzle 50 is provided on the leg of the body frame 2 that extends toward the crawler travelling device 3 for spraying chemicals onto the base of the tea plant.
As shown in Figure 3, the spray nozzles 50 are arranged on the legs of the body frame 2, behind the driver's seat 8, at a position corresponding to the rear of the crawler device 3 in the forward direction, and on legs 2b and 2e located at both ends in the width direction of the tea ridges, and have the configuration shown in Figure 5.
2 and 5, the legs 2b and 2e are formed with mounting portions 2b1 and 2e1 (see FIG. 2) each consisting of a screw hole at a plurality of locations along the height direction, and mounting members 51 each consisting of a bracket are fastened and fixed to the mounting portions 2b1 and 2e1 with bolts 51B , as shown in FIG. 2 and 5. Only the leg designated by the reference symbol 2b is shown.
Mounting member 51 has a pipe-shaped insertion portion 51A integrally formed inside legs 2b, 2e, and a support pipe 53, to which a spray nozzle body 52 (described later) can be attached, can be slidably inserted into insertion portion 51A. Support pipe 53 is connected to power sprayer 7, and a nozzle portion 52B (described later) communicates with chemical tank 13.
A bolt 54 is provided in the insertion portion 51A and passes through the inner hole, and by pressing on the outer periphery of the support pipe 53, the support pipe 53, which is connected to the power sprayer 7 and is provided so as to be able to communicate with the chemical tank 13, can be held in a desired sliding position. In this embodiment, the portion of the support pipe 53 that slides within the insertion portion 51A is made of a metal part such as brass so as not to deform when subjected to the pressing force of the bolt 54, and the remaining portion is made of a connected flexible pipe such as a plastic pipe.
Spray nozzle bodies 52 are attached to support pipe 53 at positions protruding from the lower end of insertion portion 51A in the axial direction of support pipe 53. In this embodiment, spray nozzle bodies 52 are provided at two locations along the axial direction of support pipe 53.
The spray nozzle body 52 is composed of an elbow portion 52A having a nut 52A1 at its base that is fastened to a threaded hole (not shown) formed in the support pipe 53, and a pair of nozzle portions 52B connected to the end of the elbow portion and arranged in the traveling direction of the crawler traveling device 3 as shown in Figure 3, and a throttle knob 52C is provided at the position of the elbow portion 52A that communicates with the nozzle portion 52B.
Nut 52A1 located at the base of elbow portion 52A can be loosened to change the angle of nozzle portion 52B, and throttle knob 52C can adjust the amount of medicinal liquid sprayed from nozzle portion 52B.

Since this embodiment is configured as described above, the spraying of the chemical solution from above the tea plants is carried out by the spray device 14, while the spraying of the chemical solution to the base of the tea plants is carried out by the spray nozzle body 52.
That is, when spraying chemical solution toward the base of the tea plant, the spray nozzle body 52 is installed on the mounting portions 2b1, 2e1 formed on the legs 2b, 2e, respectively. In this case, the mounting member 51 is fastened with the bolt 51B to the mounting portions 2b1, 2e1 at a position that corresponds to the position that allows it to face the base of the tea plant, and the orientation of the nozzle portion 52b is adjusted to the desired angle by adjusting the fastening state of the nut 52A1. Furthermore, the position of the nozzle portion 52B in the height direction of the tea plant can be adjusted by adjusting the fastening state of the bolt 54 and sliding the support pipe 53. This allows the nozzle portion 52B of the spray nozzle body 52 to face the base of the tea plant and is positioned so that the chemical solution can be sprayed optimally toward the base of the tea plant.
On the other hand, once the nozzle portion 52B has been positioned, when the chemical solution is supplied from the power sprayer 7 to the support pipe 53, the chemical solution can be sprayed from the nozzle portion 52B toward the base of the tea plant by operating the throttle knob 52C of the spray nozzle body 52.
Nozzle unit 52B that sprays the chemical solution is located behind the crawler device 3 in the forward direction and on the inside of the legs on both sides in the width direction of the tea plant, so the chemical solution can be sprayed after the crawler device 3 has moved, and unlike when it is located in front of the crawler device 3 in the traveling direction, it does not come into direct contact with the tea plant and can spray the chemical solution evenly onto the base of the tea plant without damaging the tea plant. In particular, since the base of the tea plant is regularly trimmed, the tea plant is exposed, so if it can be easily positioned at the exposed position, the chemical solution can be easily sprayed directly onto the exposed position.

[0028]
[Effects of the Invention]
According to the invention of claim 1, a pest control device equipped with a retractable nozzle pipe that sprays chemicals from above the tea plants can be equipped with chemical spray nozzles attached to a position behind the crawler travel device in the forward direction and on both sides of the width of the tea plants, thereby spraying chemicals to the base of the tea plants. In particular, in addition to spraying chemicals from above the tea plants using the retractable nozzle pipe, chemicals can also be sprayed from the base of the tea plants using the chemical spray nozzles. This makes it easy to spray chemicals not only from above the tea plants but also to the base of the tea plants.

According to the invention of claim 2, the chemical spray nozzle is slidably supported by a detachable mounting member on the body frame connected to the crawler travelling device, so that the chemical spray nozzle can be retrofitted to a riding tea plantation work machine that is only equipped with a retractable nozzle pipe, and it can be positioned relative to the mounting member so that the chemical solution can be sprayed optimally to the base of the tea plants. This makes it possible to spray the chemical solution without it being blocked by the tea leaves, regardless of how densely the tea leaves are packed.

According to the invention of claim 3, the chemical solution nozzles are arranged on the rear legs of the body frame connected to the crawler travelling device in the forward direction , with each spray angle adjustable, so unlike when they are arranged in front of the crawler travelling device in the forward direction, the chemical solution can be sprayed onto the base of the tea plants without coming into contact with the tea plants and without causing uneven spraying of the chemical solution across the width of the tea ridges.This makes it easy to spray the chemical solution onto the base of the tea plants without damaging the tea plants.

Claims (3)

A riding-type tea plantation work machine is equipped with a vehicle body that straddles tea ridges and moves between the ridges on both sides using a pair of left and right crawler travel devices, a chemical tank and a retractable nozzle pipe for multiple rows that communicates with the chemical tank, and a pest control device that extends the retractable nozzle pipe above the tea trees to spray chemicals.
A riding-type working machine for tea fields is characterized in that it is provided with a chemical solution spray nozzle connected to the chemical solution tank at a position rearward in the forward direction of the crawler traveling device and on both sides in the width direction of the tea plant, and the chemical solution spray nozzle is configured to be able to face the base of the tea plant. The riding type working machine for tea fields according to claim 1,
A riding-type working machine for tea fields, characterized in that the chemical solution spray nozzle is supported so as to be slidable in the vertical direction of the tea plants via a detachable mounting member on a body frame connected to the crawler traveling device. The riding type working machine for tea fields according to claim 1,
The riding work machine for tea fields is characterized in that the chemical solution spray nozzles are arranged on the legs of the body frame connected to the crawler traveling device so that the spray angle can be adjusted.