JP7020996B2 - Covering material winder for tea garden - Google Patents

Description

The present invention relates to a winder for winding a covering material such as a lawn cloth coated on a tea plant in a tea plantation.

In a tea plantation, just before picking a sprout of a tea plant, a covering material such as a lawn cloth may be directly put on the tea plant for the purpose of shading. Shading improves the color, taste and aroma of tea leaves. The lawn cloth for tea gardens has a width of about 2 meters and a length of about 50 meters according to the tea ridges, and is stored in a rolled state with a width of about 2 meters. At the time of covering, the tea plant and the lawn cloth are fixed at one end of the tea ridge, two workers stand between the tea ridges, and the two workers manually spread the rolled-up lawn cloth and fasten it to the tea plant at regular intervals. While fastening with a tool, it moved to the other end of the tea ridge and covered it on the tea plant.

Immediately before picking the tea leaves, the workers on both sides manually wound up the lawn cloth on the tea plant while removing the fasteners. The lawn cloth becomes heavy enough to be rolled up, and it becomes even heavier when it contains water after rain, so it was hard work to work through the narrow ridges. Furthermore, due to the labor shortage and the aging of farmers in recent years, the work of winding up the covering materials has become a heavy burden on the farmers.

From the above background, passenger-type and self-propelled winding devices have gradually become widespread these days. In the passenger type (for example, Patent Document 1), the work is performed by two workers who remove the fasteners on both sides of the tea plant and one driver who steers the machine and winds the tea plant. In the self-propelled type (for example, Patent Document 2), only two workers remove the fasteners on both sides of the tea plant, and the winding is performed by a self-propelled device between the furrows.

Japanese Unexamined Patent Publication No. 2014-22301 Japanese Patent Application Laid-Open No. 2003-319723

In the winding devices of Patent Document 1 and Patent Document 2, since the covering material is wound by a rotating winding shaft, the wound covering material is firmly tightened around the winding shaft as the winding diameter changes. Therefore, there is a problem that the covering material does not easily come off from the take-up shaft during storage and the burden on the operator cannot be reduced. In this case, it may be possible to improve by adjusting the rotation speed of the take-up shaft and the traveling speed of the airframe to gradually slow down, but it was very difficult to adjust because it had to be synchronized with the change in the take-up diameter. ..

The present invention has been made in view of the above problems, and it is possible to easily remove the covering material after winding from the winding shaft, and it is possible to reduce the burden on the operator. The purpose is to provide.

In order to solve the above problems, the coating material winder for tea garden according to the present invention is
It is a coating material winder for tea gardens for winding the covering material developed so as to cover the tea plants planted in the ridges of the tea garden.
It is equipped with a take-up shaft that winds up the covering material from the unfolded state, left and right guide plates that support the take-up shaft, and a drive means that can rotate and drive the take-up shaft in the winding direction and vice versa. ,
The take-up shaft is detachably supported by one of the support ends on the corresponding guide plate, and the covering material in the take-up state is placed around the take-up shaft by rotationally driving in the direction opposite to the take-up direction. The main feature is that a spiral protrusion that guides in the extraction direction is provided.

The coating material winder for a tea garden according to the present invention is
The support end on the drive side of the take-up shaft is supported by one guide plate so as to be tiltable in the vertical direction or rotatably in the horizontal direction, and the support end on the driven side of the take-up shaft can be attached to and detached from the other guide plate. The second feature is that it is supported by.

The coating material winder for a tea garden according to the present invention is
The drive means for rotationally driving the take-up shaft and the drive means for moving the machine are each composed of hydraulic motors, and the engine and hydraulic pump for driving these hydraulic motors and the rotation directions of the respective hydraulic motors are operated. The third feature is that it is provided with a switching direction switching valve.

The coating material winder for a tea garden according to the present invention is
A pressure control valve is provided in the middle of the pipe that supplies hydraulic oil to the hydraulic motor for the take-up shaft, and when the covering material is taken up while moving the machine, the tension applied to the covering material increases and the take-up shaft is used. When the hydraulic oil supplied to the hydraulic motor exceeds the set pressure, the pressure adjusting valve opens and the hydraulic oil is adjusted to the set pressure or less, so that the tension applied to the covering material at the time of winding is relaxed. Is the fourth feature.

The coating material winder for a tea garden according to the present invention is
The front part of the machine body is provided with the winding shaft, the left and right guide plates, and the winding part including the driving means. The fifth feature is that it is provided with a deploying unit to be deployed.

The coating material winder for a tea garden according to the present invention is
The sixth feature is that the upper part of the machine body is provided with a mounting portion for mounting the covering material in a wound state.

The coating material winder for a tea garden according to the present invention is
A seventh feature is that an arc-shaped guide shaft for guiding the covering material toward the center in advance when winding the covering material from the unfolded state is provided in front of the traveling direction of the airframe.

As described above, according to the coating material winder for tea gardens according to the present invention, the covering material after being wound on the winding shaft is rotated by rotating the winding shaft in the direction opposite to the winding direction. Even a strongly wound covering material can be easily removed from the winding shaft, which has the effect of greatly reducing the burden on the operator.

A perspective view of a coating material winder for a tea plantation according to an embodiment of the present invention. Front view of the coating material winder for tea garden shown in FIG. Side view of the coating material winder for tea garden shown in FIG. A perspective view showing a state in which the take-up shaft is rotated horizontally around the hinge. Enlarged view of the main part of the take-up shaft, Explanatory drawing showing a hydraulic circuit for driving a drive motor for traveling and a take-up motor for take-up, Explanatory drawing showing winding work and unfolding work, It is explanatory drawing which shows the state which lifts the free end side of a winding shaft, and removes a covering material after winding.

1 to 8 show an embodiment of a tea plantation coating material winder according to the present invention, in which reference numeral 100 is a tea plantation coating material winder (hereinafter referred to as a winder) reference numeral T. Indicates a tea ridge.

The winder 100 is a machine for winding a covering material (a lawn cloth, a light-shielding sheet, etc.) developed so as to cover a tea plant (tea ridge) planted in a ridge of a tea garden, as shown in FIGS. 1 to 3. A gate-shaped machine body 110 arranged so as to straddle the tea ridge T, and left and right traveling devices 120 provided at the lower part of the machine body 110 are provided. The traveling device 120 includes a front wheel 122 and a rear driving wheel 124, and can move the machine body 110 in the front-rear direction along the tea ridge T.

In the gate-shaped machine body 110, the winding portion 130 of the covering material is provided in the front in the traveling direction, and the developing portion 140 of the covering material is provided in the rear in the traveling direction. 150 is provided at the top.

The winding unit 130 is a portion that winds the unfolded covering material S (see FIG. 7) covering the tea plant (tea ridge T) around the winding shaft 132 by driving the winding motor 131, and supports the left and right sides of the machine 110. A take-up shaft 132 is laid horizontally between the left and right guide plates 134L and 134R supported via the arm 133. More specifically, the support end 132a of the take-up shaft 132 is rotatably cantilevered and supported by the guide plate 134L hinged to the support arm 133 via the hinge 133a, and a notch provided in the upper part of the guide plate 134R. The support end 132b of the take-up shaft 132 is locked to the portion 134a.

The guide plate 134L is tiltable in the vertical direction and rotatable in the horizontal direction with respect to the support arm 133, whereby the support end 132b of the take-up shaft 132 is removed from the notch 134a of the guide plate 134R and taken up. The shaft 132 is tilted in the vertical direction (see FIG. 8) and can be rotated in the horizontal direction as shown in FIG.

As shown in FIG. 5, the take-up shaft 132 moves toward the support end 132a on the drive side in the direction opposite to the take-up direction (arrow A in FIG. 5) (arrow B in FIG. 5) around the shaft body. A spiral protrusion 135 having a shape that moves in a spiral shape is provided. In the spiral protrusion 135, the protrusions provided on the entire circumference of the covering material S engage with the inner surface of the covering material S to reliably wind the covering material S without slipping, and the covering material S is also wound. By rotating the take-up shaft 132 in the direction opposite to the take-up direction (arrow B in FIG. 5), the wound covering material S is deviated from the take-up shaft 132 (arrow C in FIG. 5). It serves to move to.

Further, the central portion and both ends in the width direction of the take-up shaft 132 are bent shortly from the surface in the take-up direction and the width direction (support end 132b direction), and the start end of the covering material S is locked at the beginning of winding. A short locking projection 135a is provided (only the central portion in the width direction is shown in FIG. 5). The locking projection 135a is caught by the covering material S when rotating in the winding direction, does not act as a resistance to the movement of the covering material S in the extraction direction when rotating in the direction opposite to the winding direction, and is not a resistance to the movement of the covering material S in the extraction direction. It also serves to prevent S from shifting toward the support end 132b.

An intermediate guide shaft 137 extending laterally via the support arm 136 is provided in front of the take-up shaft 132. In front of the intermediate guide shaft 137, an arc-shaped centered guide shaft 138 extending in the lateral direction via a support member 136a that can be tilted up and down is provided. The centered guide shaft 138 is curved so that the center is convex upward, and serves to move the covering material to the center during winding to prevent deviation.

The unfolding portion 140 is a portion in which the starting end of the covering material is unwound rearward from the wound covering material mounted on the mounting portion 150 at the upper part of the machine body 110 and unfolds to the upper part of the tea ridge T. As shown, an intermediate guide shaft 142 extending laterally via the support member 141 is provided near the rear of the mounting portion 150. Behind the intermediate guide shaft 142, a holding shaft 144 extending laterally via a support arm 143 that can be tilted up and down is provided. The pressing shaft 144 presses the covering material on the upper part of the tea ridge T at the time of deployment, and the pressing height can be adjusted according to the height of the tea ridge T.

The mounting unit 150 is a portion on which the covering material in the wound state is placed, and the covering material that has been wound up is placed during the winding operation, and the covering material in the wound state is placed during the unfolding work of the covering material. Place. A plurality of covering materials can be placed on the mounting portion 150.

FIG. 6 shows a hydraulic circuit for driving the traveling device 120 and the winding unit 130 of the winding machine 100. As shown in FIG. 6, a direction control valve 164 and a distributor 165 are provided in the middle of the pipe 163 that connects the hydraulic pump 161 driven by the engine 160 and the drive motors (hydraulic motors) 162 for the left and right drive wheels 124. ing. The direction control valve 164 can switch the traveling direction (forward direction, backward direction) of the machine body 110 by operating the control lever 166. A direction control valve 167 is provided in the middle of the pipe 163 that connects the drive motor 162 and the take-up motor (hydraulic motor) 131. The direction control valve 167 can switch the rotation direction (winding direction, reverse direction) of the take-up motor 131 by operating the control lever 168.

A pressure adjusting valve 169 is provided in the pipe 163 in front of the take-up motor 131. When the pressure adjusting valve 169 is wound while traveling at a low speed on the machine body 110, the tension applied to the covering material increases due to the increase in the winding diameter, and the winding motor 131 is subjected to a pressure (operating hydraulic pressure) exceeding the set pressure. And the valve opens, the hydraulic oil in the pipe 163 is released via the branch pipe 163A, the hydraulic oil toward the take-up motor 131 is adjusted to the set pressure or less, and the tension applied to the covering material is relaxed. .. 169'indicates a pressure control valve, and 170 indicates an oil tank.

Next, the winding operation of the covering material using the winding machine 100 having the above configuration will be described.

First, the work of deploying the covering material will be described. The winding machine 100 is positioned at the start end of the tea ridge T, and as shown in the right half of FIG. 7, the covering material S in the wound state mounted on the mounting portion 150. Is unwound, passed through the upper and lower intermediate guide shafts 142 and the holding shafts 144, and fastened to the ends of the tea ridges T with fasteners. When the engine 160 is started, the control lever 166 is switched to the forward side, and the aircraft 110 is advanced at a low speed (2 to 4 km / h), the covering material S is gradually unwound, so that the workers in the work passages on both sides are in the work passages. However, while deploying the unwound covering material S on the upper part of the tea ridge T, both sides of the covering material S are fastened to both sides of the tea ridge T at regular intervals by using fasteners according to the movement of the machine 110. To go.

In the work of deploying the covering material, the above work is performed up to the end of the tea ridge T, the covering material S is kept at the end of the tea ridge T, and the coating material S is moved to the tea ridge T in the next row. After covering the tea ridges T in a plurality of rows with the covering member, the unfolding work is completed.

After the curing period (a few days to a week) has passed after the unfolding work is completed, the covering material covering the tea ridge T is wound and collected.

First, the winder 100 is positioned at the start end of the tea ridge T, and the start ends of the covering material S covering the tea ridge T are shown in the left half of FIG. 7, with the upper and lower centered guide shafts 138 and the intermediate guide shafts 137. It is wound around the take-up shaft 132 and locked (the starting end is locked to the locking projection 135a). When the engine 160 is started, the control lever 166 is switched to the forward side, and the control lever 168 is switched to the take-up side, the drive motors 162 for the left and right drive wheels 124 are driven, and at the same time, the take-up shaft 132 is wound. The take-up motor 131 is driven, the machine body 110 moves forward at a low speed (2 to 4 km / h), and the take-up shaft 132 rotates synchronously.

As a result, as the machine 110 moves forward, the fasteners of the covering material S are removed by the workers in the work passages on both sides, and the covering material S on the tea ridge T is as shown in the left half of FIG. Is sequentially wound by the rotating winding shaft 132 while maintaining a constant tension via the upper and lower centered guide shafts 138 and the intermediate guide shafts 137.

When the take-up diameter of the take-up shaft 132 gradually increases as the machine body 110 advances, the tension of the covering material increases as the take-up diameter increases, and the load on the take-up motor 131 increases, but the load increases. When the hydraulic oil supplied to the take-up motor 131 exceeds the set pressure, the pressure adjusting valve 169 opens and the pressure is released, the driving force of the take-up motor 131 is lost, and the tension of the covering material decreases. The load on the take-up motor 131 is reduced. After that, when the hydraulic oil in the pipe 163 supplied to the take-up motor 131 reaches the set pressure, the driving force of the take-up motor 131 is restored, and the covering material is continuously taken up with a predetermined tension.

In this way, while the machine body 110 moves forward at a constant low speed, the covering material in the deployed state can be wound up with a substantially constant tension while adjusting the load applied to the winding shaft 132. Therefore, the tension of the covering material increases due to the increase in the winding diameter, so that the covering material in the unfolded state is not forcibly pulled and wound up, or the pulled covering material does not damage the sprout of the tea plant. As a result, it is possible to reliably and reliably wind up the coated material in the unfolded state.

After winding the covering material on the take-up shaft 132, the covering material is removed from the take-up shaft 132. Since the covering material is tightly wound around the take-up shaft 132, it is not easy to remove it as it is.

Therefore, first, as shown in FIG. 8, the support shaft 132b on the driven side of the take-up shaft 132 is lifted, removed from the notch 134a of the side plate 134R, and the control lever 168 is taken up in the take-up direction while holding the covering material. The winding shaft 132 is rotated in the direction opposite to the winding direction. Due to the action of the spiral protrusion 135 provided on the entire circumference of the take-up shaft 132, the covering material S wound around the winding material S moves to the support shaft 132b side as shown by the arrow C in FIG. Can be easily removed.

Since the locking projections 135a provided at the center and both ends of the take-up shaft 132 in the width direction are shortly bent from the surface in the take-up direction and in the support end 132b direction, when rotating in the direction opposite to the take-up direction. There is no resistance to the movement of the covering material S in the extraction direction, so that the operator can easily remove the covering material S.

The removed covering material is placed on the mounting portion 150 and transferred to the next winding operation of the covering material developed on the tea ridge T.

According to the winder 100 of the present embodiment, the following actions and effects are obtained.

(1) By providing a spiral protrusion 135 on the take-up shaft 132 and rotating the take-up shaft 132 in the direction opposite to the take-up direction, the covering material wound on the take-up shaft 132 can be easily removed. As a result, the work labor of the worker is greatly reduced.

(2) Since the pressure control valve 169 was provided in the middle of the pipe 163 toward the take-up motor 131, the tension applied to the covering material was maintained substantially constant while the machine body 110 was running at a low speed, and the covering material was taken up. It can be reliably wound around the shaft 132, whereby the winding work can be efficiently performed.

(3) Since the centering guide shaft 138 that guides the covering material toward the center is provided in front of the winding shaft 132, the covering material can be wound around the winding shaft 132 with a certain width and with good quality without shifting. Can be done. This makes it possible to efficiently remove the covering material from the take-up shaft 132 and store the removed covering material.

In the above embodiments, examples of a lawn cloth and a light-shielding sheet have been described as examples of the covering material, but it is needless to say that the coating material can be applied to other uses such as a frost-proof sheet.

Thus, by using the present invention, it is possible to easily and efficiently perform the winding work and the recovery work of the covering material in the tea plantation, and it is possible to greatly reduce the work load of the agricultural worker.

INDUSTRIAL APPLICABILITY The present invention can be used as a winder for winding a covering material while traveling along a ridge provided in a tea plantation.

100 Winding machine 110 Airframe 120 Traveling device 122 Wheels 124 Drive wheels 130 Winding part 131 Winding motor (driving means)
132 Take-up shaft 132a, 132b Support end 133, 136, 143 Support arm 134L, 134R Guide plate 134a Notch 135 Spiral protrusion 136a, 141 Support member 137, 142 Intermediate guide shaft 138 Centered guide shaft 140 Deployment part 144 Holding shaft 150 Mounting part 160 Engine 161 Hydraulic pump 162 Drive motor (hydraulic motor)
163 Piping 163A Branch pipe 164, 167 Directional control valve 165 Distributor 166, 168 Control lever 169 Pressure control valve S Coating material T Tea ridge

Claims (7)

It is a coating material winder for tea gardens for winding the covering material developed so as to cover the tea plants planted in the ridges of the tea garden.
It is equipped with a take-up shaft that winds up the covering material from the unfolded state, left and right guide plates that support the take-up shaft, and a drive means that can rotate and drive the take-up shaft in the winding direction and vice versa. ,
The take-up shaft is detachably supported by one of the support ends on the corresponding guide plate, and the covering material in the take-up state is placed around the take-up shaft by rotational drive in the direction opposite to the take-up direction. A tea plantation covering material winder characterized by being provided with a spiral protrusion that guides in the extraction direction. The support end on the drive side of the take-up shaft is supported by one guide plate so as to be rotatable in the horizontal direction or tiltable in the vertical direction, and the support end on the driven side of the take-up shaft can be attached to and detached from the other guide plate. The coating material winder for a tea garden according to claim 1, which is supported by the above. The drive means for rotationally driving the take-up shaft and the drive means for moving the machine are each composed of hydraulic motors, and the engine and hydraulic pump for driving these hydraulic motors and the rotation directions of the respective hydraulic motors are operated. The coating material winder for a tea plantation according to claim 1 or 2, further comprising a switching direction switching valve. A pressure control valve is provided in the middle of the pipe that supplies hydraulic oil to the hydraulic motor for the take-up shaft, and when the covering material is taken up while moving the machine, the tension applied to the covering material increases and the take-up shaft is used. When the hydraulic oil supplied to the hydraulic motor exceeds the set pressure, the pressure adjusting valve opens and the hydraulic oil is adjusted to the set pressure or less, so that the tension applied to the covering material at the time of winding is relaxed. The coating material winder for a tea plantation according to claim 3, further comprising. The front part of the machine body is provided with the winding shaft, the left and right guide plates, and the winding part including the driving means, and the covering material is unwound from the covering material in the wound state to the upper part of the tea plant at the rear part of the machine body. The coating material winder for a tea plantation according to any one of claims 1 to 4, wherein the deploying unit is provided. The coating material winding machine for a tea plantation according to any one of claims 1 to 5, wherein a mounting portion for mounting the covering material in a wound state is provided on the upper part of the machine body. Claim 1 to claim 1, wherein an arc-shaped guide shaft for guiding the covering material toward the center in advance when winding the covering material from the unfolded state is provided in front of the traveling direction of the machine. The covering material winder for a tea garden according to any one of 6.

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