JP3553407B2 - Riding tea leaf picking machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a riding type tea leaf picking machine, and more particularly, to a riding type tea leaf picking machine that performs a tea leaf picking operation while moving across a tea ridge.
[0002]
[Prior art]
In recent years, with the aging of workers, there is an urgent need to automate various machines for managing tea gardens and reduce the work load. In order to respond to these demands, for example, a rail track type tea picking machine and a riding type tea picking machine have been proposed.
The above-mentioned rail track type tea leaf picking machine is provided with a portal frame which is disposed so as to straddle a tea ridge on a track truck which runs on a track rail laid along a ridge, and the portal frame is provided on the portal frame. A plucking device is provided to be able to move up and down. Then, the picking device is operated while running the track truck, and the picked tea leaves are stored in a container such as a tea bag provided behind the picking device. Thus, the tea leaves can be appropriately plucked and stored with a relatively inexpensive device.
[0003]
Further, the riding type tea leaf picking machine is provided with a picking device, a large air blower, and a large storage device for storing tea leaves, on a riding vehicle body which straddles a tea ridge and runs by itself on both sides of the ridge. . Then, the passenger body is put in the ridge, the plucking device is operated to perform the plucking operation, and the plucked tea leaves are accommodated in the accommodating device by air-flow conveyance using a blowing device. As a result, as long as the vehicle is not located on an extremely sloping ground, a plucking machine of a riding type can be used to perform the plucking operation.
[0004]
The plucked tea leaves are taken into a container such as a tea bag, but when the inside of the container is filled with tea leaves, it is necessary to replace the tea container with a new container. For this reason, conventionally, an operator performs a plucking operation while visually checking that the container is filled with tea leaves, interrupts the plucking operation when the container is filled with tea leaves, and once descends from the plucking machine to remove the container from the container. Replacement work.
However, repetition of the getting-on / off operation with respect to the plucking machine every time the container is replaced is not only poor in workability but also painful for the operator.
[0005]
On the other hand, as a configuration to increase the plucking speed,
(1) A configuration in which a reaping unit is divided into two parts left and right from a substantially central position in the width direction of the pruning machine, and the tea leaves plucked in each reaping part are air-flow-conveyed to a storage part provided corresponding to each reaping part. (For example, Japanese Patent Application Laid-Open No. Hei 10-136751).
In the above publication, a container is arranged at the rear of the plucking machine as a storage section for tea leaves to be plucked in large quantities by increasing the plucking speed, the plucked tea leaves are introduced into the container by a suction hose, and the inside of the container is filled with plucked tea leaves. When the container is turned over, tea leaves are transferred to a truck or the like by turning over the container.
(2) A blower driven by an engine provided in each cutting section is provided, which is different from the structure shown in the above publication in which an airflow generating means is provided on the tube side, and a nozzle connected to the blower is provided. There has also been proposed a configuration in which compressed air is blown toward the rear of the cutting blade to blow off the pruned tea leaves rearward of the cutting blade and housed in a tea bag disposed at that position (for example, Japanese Patent Application Laid-Open No. HEI 9-210, filed in the earlier application of the present application). No. 10-178866).
[0006]
[Problems to be solved by the invention]
However, the configurations shown in the above publications have the following problems.
In other words, when the tea tree ridge is divided into two parts in the width direction, the picking speed is faster than in the case of full cutting, but a blower for air-flowing tea leaves from each picking point is provided at each picking point. The equipment will be large because it will be required in response. For this reason, since the number of drive sources provided in the plucking machine increases, the maintenance work and the body weight increase, and the maintenance cost increases.
[0007]
On the other hand, tubes and ducts are generally used as a transport structure that connects the plucking point and the storage section.However, considerable space may be required to install ducts for each cutting section. Although it may be installed on the side of the plucking machine that does not interfere with the components of the above, in this configuration, the tube will protrude from the side of the plucking machine, and it will be an obstacle when workers pass through narrow ridges There is.
In addition, when a tube is used and bent to switch the direction in the middle or at each end in the extending direction, the internal surface state may change (for example, Japanese Utility Model Publication No. 7-39391), The airflow flowing inside may be turbulent, and it may be difficult to obtain the best transport airflow. In particular, if there is a height difference between the upper part of the container or tea bag and the pruning point, the plucked tea leaves must be moved against the gravity. Therefore, there is a possibility that the movement of the tea leaves that are subsequently conveyed may be hindered, and it is difficult to efficiently store the plucked tea leaves.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to improve the efficiency of a pruned tea leaf with a simple structure that does not have a structure that protrudes to the side of the pruning machine in view of the above-mentioned problems in the conventional tea pruning machine, in particular, the problem in the accommodation structure of the pruning tea leaf. It is an object of the present invention to provide a tea leaf picking machine that can be easily moved and stored.
[0009]
[Means for Solving the Problems]
In order to achieve this object, the invention according to claim 1 is directed to a vehicle body composed of a gate-shaped frame that straddles a tea tree ridge, a traveling device that is connected to the vehicle body and travels between the ridges, A plucking device that is disposed movably up and down and has a rearward blowing unit, and a tea leaf storing unit that is disposed behind the pruning device and stores the tea leaves pressure-fed by the blowing unit of the pruning device. In the riding type tea leaf pruning machine, the blower means includes a blower arranged at a substantially central position in a width direction of a tea tree ridge on which the tea leaves are plucked by the plucking device on the body of the vehicle body, and is extended from the blower. A blower pipe is provided, which is divided right and left around a substantially central position of the tea tree ridge and is capable of expanding and contracting in the vertical direction .
[0010]
According to a second aspect of the present invention, in the riding type tea picking machine according to the first aspect, the blower is provided with a nozzle provided at a position of the blower tube facing the cutting blade of the picking device. It is characterized by having.
[0011]
According to a third aspect of the invention, in the riding-type tea Hatsumi adopted machine according to claim 2, wherein the air duct is extended in the vertical direction between the nozzle and the blower split ends which are divided in the vertical direction Are inserted into each other and are provided so as to be displaceable in a relative direction.
[0012]
[Action]
According to the first and second aspects of the present invention, the blower of the blower is arranged substantially at the center of the tea tree ridge in the width direction, and does not require a plurality of blower driving sources for the nozzles distributed to the left and right. Therefore, the configuration required for conveying the tea leaves can be simplified. In addition, since the blower tubes and nozzles of the blower are arranged on the left and right sides of the center of the tea tree ridge in the width direction, the duct-like blower tubes do not protrude from the sides of the plucking machine.
Further, even if the plucking device is moved up and down, the blower tube is maintained in a straight line, so that the loss of the discharge pressure from the blower is suppressed from decreasing and the turbulence of the airflow in the blower tube is reduced. Therefore, the pressure required for blowing out the pruned tea leaves is ensured, so that even if there is a height difference between the tea plucking location and the storage location, the plucked tea leaves can be stored efficiently.
[0013]
According to the third aspect of the present invention, the divided end portions divided in the vertical direction can be displaced in the relative direction by being inserted into each other, so that the linear shape can be maintained regardless of the height difference. It is possible to make the airflow less likely to be disturbed unlike the case where the airflow is bent in the middle.
[0014]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the illustrated embodiments.
FIG. 1 is a side view of a riding type tea leaf picking machine according to an embodiment of the present invention. In the drawing, a riding type tea leaf picking machine 1 includes a vehicle body 2, a traveling device 3, a plucking device 4, a tea leaf accommodating means 5, and a transport duct. 6 is provided.
Hereinafter, the configuration of each unit will be described.
The vehicle body 2 is secured to the portal frames 21 and 22 disposed in front and rear of the vehicle body, the elevating device 23 disposed between the portal frames 21 and 22, and the portal frames 21 and 22. And a board 24 to be used.
The portal frames 21 and 22 are formed so as to straddle a tea ridge and are formed of a rigid material.
The elevating device 23 is formed of a cylinder for driving the plucking device 4 up and down, and is integrally attached to the vehicle body 2.
Further, the riding board 24 is a rigid board having a certain thickness. On the riding board 24, a cockpit (not shown) on which an occupant sits, and a steering section 25 located in front of the cockpit are provided. An engine 26, which is a drive source of the traveling device 3, and a fuel tank 27 are provided.
[0015]
The traveling device 3 is provided with a drive wheel 31, a driven wheel 32, and a rubber crawler 33 wound around each of these wheels. Further, a reinforcing frame 34 is connected to the driving wheel 31 and the driven wheel 32, a plurality of rolling wheels 35 are pivotally supported by the reinforcing frame 34, and the base ends of the portal frames 21 and 22 are The traveling device 3 is fixed to receive the load of the vehicle body 2 as a whole.
The traveling device 3 is configured to supply hydraulic pressure necessary for rotating and stopping the drive wheels 31 by hydraulic control using a hydraulic pump 36 (see FIG. 2) connected to an output shaft of the engine 26.
[0016]
As shown in FIG. 2, the plucking device 4 is provided with paired side plates 42, 42 at both end portions of the support frames 41, 41, and a circular lower portion between the side plates 42, 42. Is supported so as to reciprocate. At one end of the plucking device 4 in the left-right direction, a hydraulic motor 44 that is rotationally driven by hydraulic control from a hydraulic pump 36 is provided, and the output from the hydraulic motor 44 reciprocates the cutting blade 43 via a speed reduction mechanism 45. It is transmitted as dynamic power.
[0017]
Support frames 41, 41 extending in the horizontal direction are provided on both left and right sides of the plucking device 4, and the lifting devices 23 (see FIG. 1) are connected to the support frames 41, 41. Thereby, the cutting blade 43 of the plucking device 4 is positioned at the plucking position according to the elevating operation of the elevating device 23.
[0018]
The plucking device 4 is provided with a blowing means 46.
In FIG. 2, the blower 46 includes a blower 47, a blower tube 48, and a nozzle 49. Hereinafter, each member will be described.
As shown in FIG. 2, the blower 47 is disposed substantially at the center in the width direction of the tea tree ridge from which the tea leaves are plucked by the plucking device 4, and is mounted on a support frame 24 </ b> A erected on the left and right sides of the board 24. Supported by the support member 24B.
[0019]
As shown in FIG. 2, the blower pipes 48 are distributed right and left around a position substantially at the center of the tea tree ridge in the width direction, and an extended end located on the opposite side to the blower 47 side is located above the cutting blade 43. The extension end is extended toward both ends in the width direction of the cutting blade 43 (for convenience, this extension end is indicated by reference numeral 48A in FIG. 2).
The blower tube 48 is extended in the vertical direction, is divided into two in the extension direction, and the divided portions are inserted and fitted to each other so as to be relatively displaceable in the vertical direction.
[0020]
In FIGS. 2 and 3, a plurality of nozzles 49 are arranged along the width direction of the cutting blade 43 and communicate with the blower tube 48 </ b> A.
In the present embodiment, the opening of the nozzle 49 is directed to a continuous surface between the inner surface of the transport duct 6 and the cutting blade 43, which will be described later, as indicated by a dashed line in FIG. Thus, the air discharged from the nozzle 49 almost forcibly flows toward the curved surface 61A1 having the larger radius of curvature among the curved surfaces of the bend portion 61 located on the side of the picking device 4 in the transport duct 6.
[0021]
On the other hand, the board 24 is provided with the tea leaf storing means 5 behind the plucking device 4.
As shown in FIG. 1, the tea leaf accommodating means 5 includes an elevating plate 51 provided so as to be able to move up and down by a pair of support frames 24C erected on the board 24, and an elevating member serving as an elevating driving member for the elevating plate 51. And a horizontal drive cylinder 53 that can be raised and lowered together with the lift plate 51, a container 54 having a side wall integrated with the horizontal drive cylinder 53, and an opening / closing cylinder 55 for opening and closing a bottom lid 54 </ b> A of the container 54. I have. Note that a mesh roof 54B that covers the opening of the container 54 is provided at a joint between the container 54 and the bend portion 62 of the transport duct 6 so that air from the transport duct 6 and tea leaves are separated. Has become.
In FIG. 1, the lifting cylinder 52 is attached to a support frame 24A, and the other end of a wire 52A, one end of which is hooked to a lifting plate 51, is hooked to a rod. The wire 52 </ b> A is wound around a rolling wheel 24 </ b> D supported by the support frame 24 </ b> C between the ends, so that the expansion and contraction movement of the lifting cylinder 52 can be transmitted to the lifting plate 51.
The horizontal drive cylinder 53 has a configuration having a multiple rod in which a plurality of rods are housed, and the cylinder body is attached to the elevating plate 51 and can be moved up and down. As shown in FIG. Direction. As shown in FIG. 6, the extension amount of the horizontal drive cylinder 53 is set to such an amount that the container 54 can be positioned at a position where the bottom cover 54 </ b> A of the container 54 can be opened above the transportation means such as the truck T.
The opening / closing cylinder 55 is a cylinder provided on the side wall of the container 54 and capable of extending and contracting in the vertical direction. One end of a wire 56 that converts a stretching operation into an opening / closing operation of the bottom cover 54A by combining a plurality of pulleys is bypassed. .
[0022]
On the other hand, a transport duct 6 extending in the vertical direction is connected to the plucking device 4 and the tea leaf storing means 5 to connect them.
Extending direction end side in the transport duct 6 is distributed to left and right as a boundary in the width direction substantially central position of the ridge tea tree, at its ends to constitute a space portion 61A facing the nozzle 49 having the blowing means 4 6 Bend portion 61 is provided. At the other end of the transport duct 6 in the extending direction, a bend portion 62 is provided which is located in front of the tea leaf storing means.
The vertical portion of the transport duct 6 is divided into two parts, and the divided surfaces are inserted and fitted to each other so that the part can be expanded and contracted. In this case, the insertion form is such that the bend portion 61 located in the front in the flow direction of the air from the nozzle 49 enters the inside of the bend portion 62 located in the rear in the flow direction. The moving tea leaves are not stopped by the split end face.
Further, as shown in FIGS. 4 and 5, the space 61 </ b> A of the bend 61 located on the side of the plucking device 4 is an extended end of the blower pipe 48 that is distributed to the left and right with the width direction center of the tea tree ridge as a boundary. It has a horn shape opened so as to cover the installation range of the nozzle 49 provided in 48A, so that the air discharged from the nozzle 49 can be efficiently introduced.
[0023]
On the other hand, near the bend portion 61 of the transport duct 6 on the side of the plucking device 4, an air discharge nozzle 63 is arranged separately from the nozzle 49, as shown in FIGS. 1 and 3.
As shown in FIG. 4, the air discharge nozzle 63 has a flat opening cross section, and can discharge air from the blower 47 via a bellows hose 63A (see FIG. 1).
As shown in FIG. 3, the air discharge nozzle 63 has one end in the extension direction of the transport duct 6, that is, the inside of the peripheral surface continuous with the curved surface 61 </ b> A <b> 2 having a small curvature radius among the curved surfaces of the bend portion 61 located on the plucking device 4 side. It is arranged so that an opening may be located. Such an arrangement prevents the rising speed of the airflow from being reduced due to the pressure loss when passing through the bend portion 61, and continuously connects to a position where the influence of the centrifugal force tends to be weak, that is, a curved surface having a small radius of curvature. This is because acceleration is applied to the tea leaves approaching the inner peripheral surface side.
[0024]
Since the present embodiment has the above-described configuration, when the traveling device 3 is put between the tea ridges to perform the pruning operation of the tea ridges, the container 54 included in the tea leaf storing means 5 is in the state shown in FIG.
In the plucking device 4, the blower 47 of the blowing means 46 is positioned at the center of the tea tree in the width direction, and the section of the blower tube 48 that reaches the nozzle 49 is also positioned at the center of the tea tree in the width direction. There is no protruding thing.
In particular, since the nozzles 49 are only distributed right and left at the lower end of the blower tube 48 extending vertically in the center of the tea tree in the width direction, the blower driving source for each nozzle 49 Do not need. Therefore, there is no member that protrudes from the side of the nozzle 49.
Since the blower tube 48 can be relatively displaced in the vertical direction in conjunction with the elevating operation of the elevating device 23, no bent portion is generated in a section from the blower 47 to the nozzle 49. Therefore, pressure loss does not occur in the air from the blower 47 due to the absence of the bent portion on the way to the nozzle 49. Therefore, it is possible to ensure the necessary pressure to blow skip plucking tea leaves without increasing the output of the blower 47.
The plucked tea leaves blown off by the air discharged from the nozzle 49 are introduced into the transport duct 6 located behind the tea leaves, and are transported to the container 54.
[0025]
According to this embodiment, since the blower tube 48 has a symmetrical structure with respect to the center position in the width direction of the tea tree ridge, the components of the left and right portions can be shared except for the center portion, thereby producing The cost required for a mold and the like used for the above can be reduced.
Further, since it is only necessary using the same blowing means 46 as a target a cutting portion separated to the right and left in the boundary width Direction central ridge tea tree, with the installation space of the air source can be minimized, The components of the blowing means 46 do not protrude from the side of the plucking machine.
In the above-described embodiment, the self-propelled configuration using the rubber crawler 33 as the type of the traveling device 3 is intended. However, the present invention is not limited to this configuration, and includes a rail or a caterpillar and wheels. It is also possible to use a self-propelled type, a traction type, a large riding type or a simple riding type.
[0026]
【The invention's effect】
According to the first and second aspects of the present invention, the blower of the blower is arranged substantially at the center in the width direction of the tea tree ridge, and does not require a plurality of blower driving sources for the nozzles distributed to the left and right. Therefore, it is possible to obtain a tea picking machine with a simple configuration and low maintenance cost by not requiring a large number of driving sources.
In addition, since the blower pipes and nozzles of the blower are arranged on the left and right sides of the center of the tea tree ridge in the width direction, the duct-like blower pipes do not protrude from the sides of the plucking machine. Can be prevented from obstructing when passing through the furrow.
Further, even if the plucking device is moved up and down, the blower tube is maintained in a straight line, so that the loss of the discharge pressure from the blower is suppressed from decreasing and the turbulence of the airflow in the blower tube is reduced. Therefore, the pressure required for blowing out the pruned tea leaves is ensured, so that even if there is a height difference between the tea plucking location and the storage location, the plucked tea leaves can be stored efficiently.
[0027]
According to the third aspect of the present invention, the blower tube is configured such that the divided ends divided in the vertical direction can be inserted into each other and displaced in the relative direction. The shape can be maintained, and unlike the case where the air flow is bent, the turbulence of the air flow can be less likely to occur. That is, the pressure required for blowing out the pruned tea leaves can be ensured by suppressing a decrease in the loss of the discharge pressure from the blower. As a result, it is possible to maintain good movement of the plucked tea leaves.
[Brief description of the drawings]
FIG. 1 is a side view of a riding type tea leaf picking machine according to an embodiment of the present invention.
FIG. 2 is a front view of the riding type tea picking machine shown in FIG. 1;
FIG. 3 is a view showing a configuration of one end in an extension direction of a transport duct used in the riding type tea leaf picking machine shown in FIG. 1;
FIG. 4 is an arrow view in a direction indicated by reference numeral (4) in FIG.
FIG. 5 is an arrow view in a direction indicated by reference numeral (5) in FIG. 3;
FIG. 6 is a side view showing one embodiment of the riding type tea leaf picking machine shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Riding type tea leaf picking machine 2 Body main body 21, 22 Portal frame 26 Engine 3 which is a drive source of a running device 3 Running device 4 Picking device 43 Cutting blade 47 Blower 48 Blowing means 48A Extended end 49 Nozzle 5 Tea leaf storing means 51 Lifting plate 52 Lifting cylinder 53 Horizontal drive cylinder 54 Container 54A Bottom lid 55 Opening / closing cylinder 6 Transport duct 61 Bend portion 61A at one end in the extension direction located on the plucking device side Space portion 62 Bend portion at the other end in the extension direction located on the tea leaf storage means side 63 air discharge nozzle

Claims (3)

A body composed of a gate-shaped frame that straddles the tea plantation,
A traveling device connected to the vehicle body and traveling through the furrow;
A plucking device that is disposed movably up and down with respect to the vehicle body, and that has a rearward blowing unit;
A riding-type tea leaf pruning machine provided with a tea leaf accommodating means disposed behind the plucking device and accommodating the tea leaves pressure-fed by the blowing means of the plucking device,
The blower is a blower that is arranged at a substantially central position in the width direction of a tea tree ridge on which the tea leaves are plucked by the pruning device on the vehicle body, and extends substantially from the blower to a substantially central position of the tea tree ridge. A riding-type tea leaf picking machine, characterized by being provided with a blower pipe which is divided right and left from a boundary and which can expand and contract in a vertical direction . The riding type tea picking machine according to claim 1,
A riding-type tea leaf picking machine, characterized in that the blowing means is provided with a nozzle provided at a position in the blower pipe facing a cutting blade of the plucking device . In claim 2 Symbol placement of riding tea Hatsumi adopted machine,
The blower tube is vertically extended between the blower and the nozzle, and the vertically divided divided ends are provided so as to be displaceable in a relative direction by being inserted into each other. Riding type tea picking machine.

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