JP6292660B2 - Tea plantation spreader - Google Patents

Description

  The present invention relates to a tea garden spreader used for spraying chemicals in a tea garden.

  In tea gardens, chemical spraying is usually performed to control pests that adhere to and damage the shoots, old leaves and branches of tea plants. In relatively small tea fields, chemical spraying by manual spraying using a power sprayer is widely carried out, but manual spraying is heavy labor and the burden on workers is excessive, and chemical spraying by a power sprayer is not Although there is excellent adhesion of chemicals to the leaf surface, there is a problem that chemicals adhere to the back of leaves where many pests are generated.

  As main pests of tea gardens, Kanzawa spider mite (mite), stag beetle, etc. have been conventionally known, but in recent years, Chestnut whitefly is spreading throughout the country as a new pest. The latter is very proliferative and has the feature that it quickly becomes dense in the tea garden when response is delayed, and prompt response is required.

  In relatively large scale tea gardens, riding-type chemical spraying machines are often used instead of hand spraying, and while traveling, the prescribed amount (eg, pesticide use standard amount for stag beetle, chrysanthemum whitefly is 700 liters per 10 ares) , 400 liters) of chemical liquid is sprayed on the tea tree on the ridge. The present applicant has conventionally developed a passenger-type medicine spreader, and Patent Documents 1 and 2 show examples thereof. The drug spreader of Patent Document 1 is configured so that the main body is moved from above by a first nozzle provided on an arch-shaped boom extending in the width direction of the main body frame with respect to the tea tree on the upper wall while traveling with a traveling device between the furrows. It spreads from the side by a second nozzle provided so as to extend in the vertical direction in the vicinity of the lower ends on both sides of the frame. The chemical spreader of Patent Document 2 uses a blower duct to feed the chemical liquid sprayed from the side by a nozzle provided so as to extend vertically on both sides of the main body frame into the tea tree. Yes. In either case, a prescribed amount of chemical solution is sprayed while adjusting the traveling speed.

JP 2004-261157 A JP 2006-20537 A

  However, according to the above conventional medicine spreader, although a certain spraying effect on the tea tree on the cocoon and the adhesion effect of the chemical solution on the back of the leaves are obtained, In order to cope with the increase in density, there has been a demand for more effective chemical spraying. However, if the nozzle diameter is changed to a larger one or if the spraying speed of the spreader is reduced to increase the amount of sprayed chemical, the specified amount of liquid used will be exceeded, and the working time will be prolonged, causing the operator There was a risk of overloading.

In order to solve the above problems, a tea garden spreader according to the present invention,
A substantially gate-shaped main body frame arranged so as to straddle the tea planted in the garden of the tea garden ;
A traveling part that is attached to the lower part of the main body frame, touches the ridge of the tea garden and runs along the ridge ,
Left and right skirt spraying agent conduits having a plurality of inward and diagonally upward outlets disposed at the hems on both sides of the rear of the body frame;
A scattering prevention cover that is supported so as to extend in the width direction at the rear part of the main body frame and is arranged in an arch shape on the upper side of the tea tree ,
A blower attached to the body frame;
Left and right blower pipes that are connected to the blower and are arranged so as to extend downward from both sides of the rear portion of the main body frame toward the hem, and have inward and obliquely upward blowout ports that blow out the pressure air at the respective tips .
It is provided between the lower part of each blower pipe and the outlet, and comprises a bent part that is connected to the lower part of each blower pipe and extends inwardly and in an arc shape, and an air distribution part that extends inward in the width direction and obliquely upward from the bent part , The main feature is that it has a pressure wind cross guide section that guides the pressure wind from each blower pipe to the air outlet in an obliquely upward direction and crosses the pressure air blown from each air outlet at the center in the width direction. To do.

In order to solve the above problems, a tea garden spreader according to the present invention,
The main frame of the gate,
A traveling unit attached to the lower part of the main body frame;
A spray agent conduit disposed on both sides of the rear of the body frame and having a plurality of discharge ports;
A blower attached to the body frame;
A blower pipe connected to the blower and arranged to extend from the both sides of the rear part of the main body frame to the skirt, and having a pressure air outlet,
Pressure that is provided between the lower part of each air duct and the air outlet, guides the pressure air from each air duct toward the air outlet in an obliquely upward direction, and crosses the air pressure blown from each air outlet at the intermediate position in the width direction. The main feature is that it has a wind crossing guide.

  According to the tea garden spreader according to the present invention, the pressure wind blown out from each air outlet is positioned in the intermediate position in the width direction (for example, by the pressure air cross guide portion provided between the lower part of each air duct and each air outlet. In the vicinity of the center in the width direction, they collide with each other and generate an upward flow while mixing (expanding).

  The mixed flow due to the impact of the above-mentioned pressure wind involves the spraying agent sprayed from the side spraying agent conduit toward the side of the tea plant and the inside of the skirt, and the fine spraying agent is spread throughout the tea plant. It spreads and puts on an upward flow and adheres from the inside of the tea tree to the entire back surface of each branch and leaf layer. Thereby, a spraying agent reaches | attains and adheres also to the back surface of the branch and leaf located in the inner back of the tea tree which was difficult to reach by the conventional spraying method, and the adhesion rate to the whole tea tree improves significantly.

  In the spreader for tea garden according to the present invention, the pressure wind crossing guide section guides the pressure wind directed from each blower pipe to the outlet at an angle of 10 degrees to 45 degrees obliquely upward with respect to the ground. Features.

  The tea plantation spreader according to the present invention is characterized in that the air outlet is located at a skirt having a height of 10 cm to 20 cm from the ground.

The spreader for tea garden according to the present invention is:
It extends in the width direction at the rear part of the main body frame, and is arranged so as to extend from both sides of the rear part of the main body frame to the front of the hem part , and a horizontal part is fixed in the anti-scattering cover, and left and right vertical parts A side spray agent conduit having a plurality of inward and substantially horizontal discharge nozzles ,
A fourth feature is that a scattering prevention net hanging from the front and rear ends and the left and right ends is attached to the upper surface of the tea tree on the lower surface of the scattering prevention cover .

The spreader for tea garden according to the present invention is:
The scattering prevention cover is supported at the rear of the main body frame via a link mechanism that moves up and down with a lifting cylinder,
Left and right support arms attached to the rear part of the link mechanism between the link mechanism and the anti-scatter cover, and left and right heights supported so as to be movable up and down in a latching cylinder provided at the tip of each support arm It consists of an adjustment support shaft, and by operating the lock operating member, the height of the anti-scattering cover is adjusted by hooking the latching cylinder portion on the support shaft, and the right and left hem spray agent conduits are adjusted . A fifth feature is that a height adjusting mechanism for adjusting the height position of the side spray agent conduit is provided.

  As described above, by using the tea plantation spreader according to the present invention, the spray agent such as a chemical solution reaches and adheres to the back of the branch or leaf layer inside the tea plant in the tea plant, and the spray agent for the tea plant Adhesion rate can be improved, pest control effect in tea garden is high, and excellent effect that spraying amount of spraying agent can be reduced or reduced by improving the adhesion rate of spraying agent such as chemical solution Play.

  Moreover, when liquid fertilizer etc. are used as a spraying agent, liquid fertilizer etc. can be absorbed favorably from the leaf back, and the growth effect of a tea tree can be exhibited.

  Furthermore, it is not necessary to pay much attention to operations such as fine adjustment of the spraying work in the spreader, and it is possible to improve the work efficiency and reduce the work load.

The rear view which looked at the spreader for tea gardens of the present invention from the back, Side view of the tea plantation spreader of the present invention, (A) thru | or (C) is principal part explanatory drawing which shows a ventilation duct and a skirt part chemical | medical solution conduit | pipe, An explanatory view of the chemical spraying from the back, (A) is explanatory drawing which shows the state which has a ventilation duct etc. in a spraying position, (B) is explanatory drawing which shows the state in which a ventilation duct etc. exists in an upper standby position.

  An embodiment for carrying out the present invention will be described with reference to FIGS. 1 and 2, reference numeral 100 denotes a tea garden spreader according to the present invention, and reference numeral T denotes a tea plant.

  First, a tea garden spreader will be described. As shown in FIGS. 1 and 2, a tea garden spreader 100 (hereinafter referred to as a spreader 100) includes a substantially gate-shaped main body frame 110 and a lower portion of the main body frame 110. A traveling unit 120 attached, a chemical solution spraying unit 130 mounted on the main body frame 110, and a blower unit 140 mounted on the main body frame 110 are provided.

  The main body frame 110 is set to a size that straddles the tea tree T planted in one direction at the base of the tea garden, and is provided with an operator operation unit 150. The driving unit 150 is provided with a seat 151 on which an operator sits, a handle (not shown) for the operator to run and an operation panel (not shown) on which the operator performs various operations such as drug spraying. On the main body frame 110, a motor 160 for driving each of the traveling unit 120, the medicine spraying unit 130, and the air blowing unit 140 is mounted.

  The traveling unit 120 includes traveling bodies 121 and 121 supported by the left and right legs 111 and 111 of the main body frame 110, and each traveling body 121 is configured by an endless track wound between the front and rear wheels. It is grounded between teahouses and driven by the driving force from the motor 160 so that it can travel in the front-rear direction along the fence.

  The chemical solution spraying unit 130 is connected to the chemical solution tanks 131 and 131 mounted on the left and right sides of the main body frame 110, a pump (power sprayer) 132 that sends out the chemical solution in the chemical solution tank 131, and the pump 132 via each hose 133. Provided with a liquid chemical conduit group. The medicinal solution conduit group includes left and right hem medicinal solution conduit groups 134 arranged at the hems on both sides of the rear portion of the main body frame 110 and side medicinal solution conduits 135 arranged on the sides (upward) on both sides of the rear portion of the main body frame 110. It has.

  The hem chemical solution conduit group 134 is arranged on the left and right sides so as to extend to the vicinity of the hem on both sides of the rear portion of the main body frame 110 (in the embodiment, a height of about 10 cm to 15 cm from the ground G) via the hose 133. It is comprised from the one chemical | medical solution conduit | pipe 134A-134C. It shows to FIG. 3 (A)-(C), respectively. Each of the chemical liquid conduits 134A to 134C is supported near a blowout port 144 of an air duct 143 to be described later via a support member, and each of the chemical liquid conduits 134A to 134C has a plurality of widthwise directions and obliquely upwards (15 to 55 degrees from the ground G in the embodiment). The discharge nozzles 136 are attached (hereinafter, the plurality of discharge nozzles 136 attached to the bottom chemical liquid conduit group 134 may be referred to as a bottom discharge nozzle group). Each of the three chemical liquid conduits 134A to 134C has a main role, and as shown in FIG. 4, the first chemical liquid conduit 134A spreads the chemical liquid widely from the bottom of the tea tree T toward the inside, and the second chemical liquid conduit 134B The chemical solution is sprayed linearly from the skirt of the tea tree T toward the back center, and the third chemical solution conduit 134C sprays the chemical solution over a wide range from the skirt of the tea tree to the side surface.

The side chemical liquid conduit 135 extends in the width direction at the rear portion of the main body frame 110 and extends from both sides of the rear portion of the main body frame 110 to the front of the hem (in the embodiment, a height of about 50 cm to 65 cm from the ground G). Are arranged to be. Specifically, as shown in FIG. 2, an arch shape supported so as to extend in the width direction via a link mechanism 113 that is moved up and down by a lifting cylinder 112 and a height adjusting mechanism 170 that will be described later, at the rear of the main body frame 110. The horizontal portion 135 a of the side chemical liquid conduit 135 is fixed to the scattering prevention cover 114. A plurality of discharge nozzles 136 for spraying a chemical solution horizontally from the side to the tea tree T are attached to the vertical portion 135b of the side chemical solution conduit 135 (hereinafter, a plurality of discharge nozzles 136 attached to the side chemical solution conduit 135). The discharge nozzle 135 may be referred to as a side discharge nozzle group.) The side chemical conduit 135 to spray chemical primarily the front and back surfaces of the leaf layer portion T ₁ of the tea plant T.

As shown in FIG. 4, the spray direction of the chemical liquid sprayed from the discharge nozzles 136 of the first and second chemical liquid conduits 134 </ b> A to 134 </ b> B of the skirt chemical liquid conduit group 134 is, among the center lines CL in the width direction of the tea tree T, Adjustment is made so that the medicinal solution is sprayed toward the target at a position below the apex position P _t of the height of the tea tree T and above the branch lower end position of the tea tree T, for example, the lower end position P _U of the leaf layer T _1. Has been.

  A scattering prevention net 115 hanging from the front and rear ends and the left and right ends of the tea tree T is attached to the lower surface of the scattering prevention cover 114. Thereby, it can prevent that the chemical | medical solution sprayed to a side from a side part discharge nozzle group scatters. Alternatively, a plurality of downward discharge nozzles 136 may be attached to the horizontal part 135 a of the side chemical liquid conduit 135 so that the chemical liquid is sprayed onto the tea tree T from above in the scattering prevention net 115.

  In relation to the chemical solution spraying unit 130 described above, a height adjustment mechanism 170 that can independently adjust the height of the anti-scattering cover 114 is provided between the link mechanism 113 and the boom 114. The height adjusting mechanism 170 can adjust the height position of the side discharge nozzle group in accordance with the growth height of the tea tree with respect to the left and right skirt discharge nozzle groups. Specifically, FIG. 4 and 4, the left and right support arms 171 attached to the rear portion of the link mechanism 113, and the height setting lock hooking cylinder portion 172 provided at the tip of each support arm 171 can be moved up and down. The left and right height adjustment support shafts 173 are supported, and the scattering prevention cover 114 is fixed to the lower ends of the left and right height adjustment support shafts 173.

  Then, the height adjusting mechanism 170 is configured to hang the latching cylinder portion 172 on the circumferential groove portion 173a provided on the outer peripheral surface of each height adjusting support shaft 173 by operating the lock operation member 174, thereby preventing the scattering prevention cover. 114 can be fixed at a desired height position. As a result, the height position of the side discharge nozzle group can be adjusted according to the growth height of the tea tree for the left and right skirt discharge nozzle groups, and appropriate spraying according to the growth of the tea tree becomes possible.

  The blower unit 140 includes a blower 141 mounted on the main body frame 110, and left and right blower ducts 143 and 143 connected to the blower 141 via an intermediate duct 142, and the left and right blower ducts 143 are connected to the link mechanism 113. Supported at the rear.

  As shown in FIGS. 1 and 4, the left and right air ducts 143 are arranged so as to extend downward from both sides of the rear portion of the main body frame 110 to the hem (in the embodiment, a height of about 10 cm to 15 cm from the ground G). , And obliquely upward air outlets 144 for blowing out pressure air at the respective tips. In addition, a pressure air guide 145 that guides the pressure air from each air duct 143 toward the air outlet 144 obliquely upward is provided between the lower portion of each air duct 143 and the air outlet 144.

The pressure wind guide portion 145 includes a bent portion 145A connected to the lower portion of the air duct 143, and a width direction and obliquely upward from the bent portion 145A (in the embodiment, 15 degrees to 20 degrees, more specifically 18 degrees). Pressure air blown out from the air outlet 144 at the tip of the air distributing part 145B in the left and right pressure air guides 145, and each air outlet in the width direction center line CL of the tea tree. It intersects at _a position Pa higher than the horizontal level of 144 (15 cm from the ground G in the embodiment) and collides with each other.

  Next, a method for spraying a chemical solution in the tea garden using the spreader 100 having the above configuration will be described below.

  First, in the tea garden, as shown in FIG. 1, the spreader 100 is positioned with respect to the tea tree T planted in the tea plantation. By the operation of the elevating cylinder 112, the hem drug solution conduit group 134 and the side drug solution conduit 135 are arranged. The air duct 143 is lowered from the raised position and set to a predetermined spraying height, and the height of the side drug solution conduit 135 is reset by the height adjusting mechanism 170 as necessary. Then, while the spreader 100 is advanced at a low speed so as to straddle the tea tree T, the operator simultaneously sprays the chemical solution from the hem and side of the tea tree T toward the inside and the side surface of the tea tree T by operating the operation panel.

The pump 132 is driven by the driving force from the prime mover 160, and the chemical solutions in the left and right chemical solution tanks 131 and 131 are sent out to the hem chemical solution conduit group 134 and the side chemical solution conduit 135 via the respective hoses 133. The delivered chemical is directed from the discharge nozzles 136 of the hem chemical solution conduit group 134 toward the inside of the tea tree T, and from the discharge nozzles 136 of the side chemical solution conduit 135 toward the side surface (leaf layer portion T ₁ ) of the tea tree T. Sprayed all at once. In particular, in the bottom chemical liquid conduit group 134, the spray nozzle 136 from the first chemical liquid conduit 134A and the second chemical liquid conduit 134B is sprayed toward the inside of the tea tree T and the back center.

At the same time, the blower 141 is driven by the driving force from the prime mover 160, and the pressure wind generated by the blower 141 is pumped to the left and right blower ducts 143 and 143 via the intermediate duct 142, and the pressure wind guide portion located at the skirt portion. The direction is changed at 145 and 145, from the left and right outlets 144 and 144 toward the inside of the tea plant T, but the lower center of the width direction center line CL of the tea plant T is lower than the target spraying position of the spray liquid. In this way, the air is blown out toward _a position Pa higher than the horizontal level of each air outlet 144.

Pressure air blown out from the air outlet 144, 144 of the left and right, collide with each other at the same position P _a, to generate a rising flow while mixing (expansion). At the same time, the chemical solution sprayed inside the tea tree T from the left and right hems is mixed evenly with the air, further miniaturizing the chemical solution, and putting the refined chemical solution in an upward flow to each branch inside the tea tree T And attach to the back of the leaves.

In this way, while the spreader 100 is running, the leaves in the leaf layer portion T ₁ of the tea tree T ₁ are simultaneously sprayed with the chemical solution from the skirt discharge nozzle group and the side discharge nozzle group and the blowing of the pressure air from the skirt portion. In addition to spraying the chemical solution on the surface, the chemical solution can surely reach and adhere to each branch and leaf back surface inside the tea tree T where it was difficult to reach the chemical solution in the past.

  When the chemical solution spraying for one row of wrinkles is finished, the spreader 100 is turned from the end of the wrinkle, and the spreader 100 is positioned with respect to the adjacent row of wrinkles. In turning the spreader 100, as shown in FIG. 5, the blower duct 143 and the like in the lower spray position (FIG. 5A) are moved to the upper standby position (FIG. 5B) by the operation of the lifting cylinder 112. ) To avoid interference with the ends of the tea tree T. When the spreader 100 is positioned with respect to the adjacent row of kites, the blower duct 143 and the like are lowered again to the lower spray position (FIG. 5A), and the sprayer 100 is run at a low speed in the other direction while spraying the chemical solution. To continue.

  The spreader 100 has the following effects.

(1) while traveling spreaders 100, at the same time the skirt ejection nozzle group, and the drug solution sprayed from the side discharge nozzle groups, the blowing pressure air from the hem part, the leaf surface in leaves layer portion T ₁ of the tea plant T In addition to spraying the chemical solution to the teat, the chemical solution can surely reach and adhere to each branch and leaf back surface inside the tea tree T where it was difficult to reach the chemical solution in the past. Thereby, the chemical | medical solution adhesion rate with respect to the whole tea tree T improves.

(2) Since the chemical solution reaches and adheres to the branches and leaf backs inside the tea tree, where the chemical solution has been difficult to reach so far, the chemical solution adhesion rate is improved, so the spraying amount of the chemical solution can be reduced or reduced. This can reduce the cost required for spraying chemicals.

(3) Since the chemical spraying can be performed reliably, the work efficiency of the chemical spraying is improved, the discharge nozzle is changed to one having a large diameter in order to increase the chemical spraying amount, or the traveling speed of the sprayer 100 is made slower. There is no need to make it.

(4) As a result, the operator does not add extra work to the spraying work and does not care about the traveling operation of the spreader 100, and the work load and work time are not increased. It is also possible to prevent a situation where the prescribed amount of medicine used is exceeded.

(5) Due to the addition of the height adjustment mechanism 170, according to the growth of the tea tree, it can be adjusted to the height of the tea tree, whether it is a young tree before the growth of the tea tree or an old tree after the growth of the tea tree. By spraying properly, the chemical solution can be reliably sprayed on the leaf surface, leaf back surface, and branches.

(6) Since the chemical adhesion rate improves on the leaf surface, leaf back surface, and branches of tea trees, it is effective for pests that occur on the leaf surface, leaf back surface, and branches (for example, stag beetle, chrysanthemum lice). Can be controlled.

  In this embodiment, a chemical solution is used, but the chemical solution may be in the form of a wettable powder, an aqueous solvent, or an emulsion. The spraying agent may be liquid or powder fertilizer. The rice bran is included in the powder. Since the adhesion efficiency to the leaf surface and the leaf back surface is high, the growth of tea plant can be improved.

  Thus, by using the present invention, it is possible to perform a spraying operation of a medicine or the like in a tea plantation while reducing the burden on the operator while reducing the spraying amount, and to greatly exert a control effect or a growth effect. .

  The present invention can be used for a spraying operation for a tea garden. In addition, it can be used for facility horticulture, turf cultivation and the like.

100 Spreader (tea garden spreader)
DESCRIPTION OF SYMBOLS 110 Main body frame 111 Leg 112 Lifting cylinder 113 Link mechanism 114 Splash prevention cover 115 Splash prevention network 120 Traveling part 121 Traveling body 130 Chemical liquid spraying part 131 Chemical liquid tank 132 Pump 133 Hose 134 Bottom chemical liquid conduit (hem part spraying agent conduit)
134A First chemical liquid conduit 134B Second chemical liquid conduit 135 Side chemical liquid conduit (side spray agent conduit)
136 Discharge nozzle 140 Air blower 141 Air blower 142 Intermediate duct 143 Air blow duct 144 Air outlet 145 Pressure air guide part 145A Bending part 145B Air distribution part 150 Driving part 151 Seat 160 Motor 170 Height adjusting mechanism 171 Support arm 172 For height setting lock Latching cylinder part 173 Support shaft for height adjustment 174 Lock operation member G Ground T Tea tree T ₁ Leaf layer part

Claims (3)

A substantially gate-shaped main body frame arranged so as to straddle the tea planted in the garden of the tea garden ;
A traveling part that is attached to the lower part of the main body frame, touches the ridge of the tea garden and runs along the ridge ,
Left and right skirt spraying agent conduits having a plurality of inward and diagonally upward outlets disposed at the hems on both sides of the rear of the body frame;
A scattering prevention cover that is supported so as to extend in the width direction at the rear part of the main body frame and is arranged in an arch shape on the upper side of the tea tree ,
A blower attached to the body frame;
Left and right blower pipes that are connected to the blower and are arranged so as to extend downward from both sides of the rear portion of the main body frame toward the hem, and have inward and obliquely upward blowout ports that blow out the pressure air at the respective tips .
It is provided between the lower part of each blower pipe and the outlet, and comprises a bent part that is connected to the lower part of each blower pipe and extends inwardly and in an arc shape, and an air distribution part that extends inward in the width direction and obliquely upward from the bent part , A tea garden characterized by having a pressure wind crossing guide section that guides the pressure wind from each blower pipe to the blowout outlet obliquely upward and crosses the pressure wind blown from each blowout opening at an intermediate position in the width direction. Sprayer. It extends in the width direction at the rear part of the main body frame, and is arranged so as to extend from both sides of the rear part of the main body frame to the front of the hem part , and a horizontal part is fixed in the anti-scattering cover, and left and right vertical parts A side spray agent conduit having a plurality of inward and substantially horizontal discharge nozzles ,
The spreader for tea garden according to claim 1, wherein a scattering prevention net hanging from the front and rear ends and the left and right ends is attached to the upper surface of the tea tree on the lower surface of the scattering prevention cover . The scattering prevention cover is supported at the rear of the main body frame via a link mechanism that moves up and down with a lifting cylinder,
Left and right support arms attached to the rear part of the link mechanism between the link mechanism and the anti-scatter cover, and left and right heights supported so as to be movable up and down in a latching cylinder provided at the tip of each support arm It consists of an adjustment support shaft, and by operating the lock operating member, the height of the anti-scattering cover is adjusted by hooking the latching cylinder portion on the support shaft, and the right and left hem spray agent conduits are adjusted . The tea garden spreader according to claim 1 or 2, further comprising a height adjusting mechanism for adjusting a height position of the side spray agent conduit.

Images