JP5789380B2 - Tea plantation machine cutting machine - Google Patents

Description

  The present invention relates to a cutting device for a tea garden management machine that transports branches and leaves cut from a teacup by a mowing device to the rear of the machine body by an air current and drops them toward the furrow.

  A tea garden management machine equipped with such a trimming device, for example, as described in Patent Document 1, faces the upper surface of the teacup on the rear side in the traveling direction of the traveling machine body that can travel across the teacup. There is a trimming device that trims the branches and leaves of the tea tree, and a trimming device that drops the trimmed leaves of the tea tree toward the furrow on the rear side of the trimming device.

  The trimming device is provided on both the left and right sides of the traveling direction of the traveling machine body, and is formed of a sheet metal or the like and extends to the rear side. A duct-shaped conveyance guide section (in the literature, a relay frame or a cutting dome), a conveyance guide Guide cover (in the literature, upper and lower guide plates, guide sheets) that is attached to an opening that opens toward the outer side in the lateral direction with respect to the aircraft traveling direction and that drops the branches and leaves toward the intercostal space And is configured. The guide cover is formed of a metal material such as a sheet metal and is formed in a box shape having an open bottom.

  For this reason, the branches and stems cut by the cutting device are caused to flow toward the front end side of the conveyance guide portion by the airflow flowing in the conveyance guide portion, and are dropped toward the furrows while changing the direction downward along the guide cover.

JP 2007-44003 A

  Since the guide covers of this conventional cutting device are arranged at the left and right ends of the rear side of the tea garden management machine, an operator sitting in a forward-facing cockpit turns around to see the guide cover. It is troublesome. In addition, since equipment such as a cargo receiving member is disposed above the traveling body between the cockpit and the guide cover, when the operator visually recognizes the guide cover, the equipment is obstructed so that the guide cover can be visually checked. It becomes difficult to do. Furthermore, the distance from the turning center of the traveling machine body to the guide cover is relatively large. For this reason, there is a possibility that the guide cover hits a tea tree or an obstacle (for example, a defrost fan) and is damaged when the tea garden management machine turns.

  Further, since the guide cover is disposed so as to protrude laterally from the left and right end portions of the traveling machine body, there is a possibility that the cutting cover may be damaged by the guide cover being caught by the tea tree when the tea garden management machine is running.

  The present invention has been made in view of such a problem, and a pruning device for a tea garden management machine that is less likely to be damaged even when the guide cover touches a tea tree or an obstacle when the traveling machine body turns and travels. The purpose is to provide.

In order to solve such a problem, the cutting device of the tea garden management machine of the present invention includes a conveyance guide unit that conveys branches and leaves cut from a teacup by a reaping device to the rear of the machine body by an air current, and the conveyance guide unit. a mowing removal device estates tiller and a guide cover for dropping toward the furrow branches and leaves and stem which reaped provided on the left and right outside of Oite the conveying guide portion to the tip portion of the rear side of the guide cover is rotatably provided in the left-right direction with respect to the traveling direction by the vertical axis, and side plates provided on the right and left direction outward position for dropping toward the leaves and stem the furrow, the side plates of the guide cover having a cushioning member for urging a force against the side plate so as to be capable of absorbing the external force inward acting.

As a result, when the tea garden management machine turns and travels, when the guide cover comes into contact with the tea tree or an obstacle and an external force acts on the guide cover, the external force is absorbed by the buffer member. For this reason, the possibility of damaging the trimming device having the guide cover can be reduced.

Further, in the present invention, it is preferable that the initial position of the side plate provided so as to be rotatable inward with respect to the traveling direction by the vertical axis is adjusted so that the front side portion thereof is inclined inward as the front side proceeds.

Further , in the present invention, it is preferable that the initial position of the side plate is adjusted so that the rear portion thereof is inclined inward as the rear portion proceeds rearward in the traveling direction.

  According to the cutting device for a tea garden management machine according to the present invention, the guide cover is provided with a buffer member capable of absorbing an external force acting on the guide cover, so that the tea garden management machine can be turned and run. In this case, even if the guide cover comes into contact with the tea tree or an obstacle and an external force acts on the guide cover, the buffer member can absorb the external force. Therefore, it is possible to provide a tea plantation machine cutting device that is less likely to be damaged even if an external force is applied to the guide cover.

The top view of the riding type tea garden management machine provided with the cutting device concerning one Embodiment of this invention is shown. The front view of this riding type tea garden management machine is shown. The rear view of this riding type tea garden management machine is shown. The trimming apparatus concerning one Embodiment of this invention is shown, The figure (a) is a top view of a trimming apparatus, The figure (b) is a side view of a trimming apparatus. The rear view for demonstrating the inclination adjustment of this cutting device is shown, The figure (a) is a rear view at the time of adjusting the inclination of the cutting device downward, The figure (b) shows the cutting device. It is a rear view when the inclination is adjusted upward. It is a partial back view for demonstrating the inclination adjustment of a trimming apparatus, The figure (a) is a partial rear view of the trimming apparatus before a trimming apparatus is adjusted, The figure (b) is a trimming. It is a partial rear view of the trimming device after the device has been adjusted.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. First, before explaining the trimming device according to the present invention, a tea garden management machine provided with the trimming device will be outlined. In the present embodiment, a riding-type tea garden management machine will be described as an example of a tea garden management machine.

  As shown in FIG. 1 (plan view), FIG. 2 (front view), and FIG. 3 (rear view), the tea garden management machine 1 has a traveling machine body 10 that travels across a teacup and a rear side of the traveling machine body 10. The arranged mowing device 40 and the mowing device provided at the rear of the traveling machine body 10 for conveying branches and leaves cut by the mowing device 40 by an air flow and distributing them between the left and right ridges in the traveling direction and dropping them. 50.

  The traveling machine body 10 includes a front frame 12 and a rear frame 13 which are formed in a gate shape to travel while straddling a teacup, and a pair of left and right upper and lower connection frames that connect the front and rear frames 12 and 13. It is configured with.

  The front and rear frames 12 and 13 are opposed to each other in a state of being separated from each other in the front-rear direction of the body, and have a left-right split structure so that the gauge can be expanded and contracted in the left-right direction of the body. These front and rear frames 12 and 13 are provided with hydraulic gauge expansion / contraction cylinders, and the gauges of the front and rear frames 12 and 13 can be expanded and contracted by the expansion and contraction of the gauge expansion / contraction cylinders.

  A pair of left and right lower connecting frames extending in the longitudinal direction of the fuselage between the lower end portions of the leg portions extending in the vertical direction on both the left and right sides of the front frame 12 and the lower end portions of the leg portions extending in the vertical direction on the left and right sides of the rear frame 13. Is fixed. These lower connecting frames are provided with a hydraulic traveling device 20 in which a crawler 19 is wound between a driving wheel and a driven wheel. Above each traveling device 20, a hydraulic tank for supplying hydraulic pressure to the hydraulic actuator and a fuel tank 21 for supplying fuel to a drive source described later are attached and fixed. In addition, the traveling device 20 is not limited to the one using a crawler, and may be one using a wheel, a rail type, or the like, for example.

  A pair of left and right upper connection frames are coupled and fixed between the left and right ends of the front frame 12 and the rear frame 13. Between the opposing surfaces of these upper connecting frames, a horizontal frame (not shown) that does not follow the gauge expansion / contraction operation of the traveling machine body 10 is installed, and between this horizontal frame and the front frame 12, A plate-like floor member 23 is stretched.

  The floor member 23 is disposed at the right front part of the aircraft, and a control unit 24 is disposed on the upper surface thereof. Adjacent to the control unit 24, a blower 26 is disposed at the center in the left-right direction of the front of the body, and an engine unit 25 is disposed at the left front of the body. A cargo receiving member 27 formed of a pipe material is provided around the control unit 24, the engine unit 25, and the blower 26.

  The control unit 24 is provided with various switches and the like for performing machine operation and tea garden management work (here, cutting work). Behind the control unit 24, a control seat 34, an operation handle 35, and various machine operation levers for an operator to sit and perform machine operation and tea garden management work are disposed.

  An engine as a power source of the traveling machine body 10 is disposed in the engine unit 25. In this engine, a hydraulic pump that supplies hydraulic pressure to each hydraulic actuator is integrally assembled so as to be driven by engine power.

  The blower 26 is driven by an engine and is disposed in a protective cover 39 having a vent hole. The blower 26 is switched on and off by a switching lever (not shown) disposed on the control unit 24 side. The wind (airflow) generated by the blower 26 is sent from the plurality of nozzles 41 toward the rear of the machine after being sent to the front side of the reaping device 40 via the extendable blower duct 36 extending to the lower side of the machine. The branches and leaves cut from the teacup by the cutting device 40 are blown away toward the rear of the machine, and the branches and leaves are dropped between the left and right cages, and then separated from the branches and leaves and released into the atmosphere. .

  The reaping device 40 is formed in a front view arc shape (or horizontal) in accordance with a tree shape for the purpose of plucking. A hydraulic cutting blade (clippers blade) 42 for cutting branches and leaves and stems from the teacup is attached to the lower side of the cutting device 40 so as to be reciprocally driven in the body width direction. The reaping device 40 is supported by an elevating device installed on the traveling machine body 10 so as to be movable up and down.

  On the rear side of the body of the reaping device 40, a reaping device 50 is provided for dropping the trimmed leaves and trunk toward the intercostal space. As shown in FIGS. 1, 4 (a), and 4 (b), the trimming device 50 has a plate-like support base 51 that projects to the rear side of the trimming device 40, and airflow through the trimmed leaves and trunk. The cutting frame 60 conveyed to the rear of the machine body and the guide cover 70 attached to the rear end portion of the cutting frame 60 and dropping the cut leaves and trunk toward the intercostal space.

  The support base 51 is connected to the support base in a rotatable manner via hinges provided at both outer ends of the opening on the rear side of the cutting chamber 31 disposed at the rear portion of the cutting device 40. 51 and a support frame supported by the rear frame 13 are configured to be foldable to the reaping device 40 side by a cylinder 52 interposed. When the cylinder 52 is extended, the support base 51 is extended to the rear side, and branches and leaves cut by the reaping device 40 can be guided by the reaping device 50 between the tea cocoons. When the tea garden management machine is used as a tea leaf plucking machine, the support stand 51 serves as a table for picked tea leaves.

  The trimming frame 60 has rectangular mouth frames 61 and 62 disposed at both front and rear ends thereof, and a flexible and stretchable cloth material 64 attached between the mouth frames 61 and 62. Do it. The front side mouth frame 61 has an opening area larger than that of the rear side mouth frame 62, and the center position of the rear side mouth frame 62 is shifted to the outside of that of the front side mouth frame 61. Is formed in a funnel shape that tapers as it extends rearward.

  When the cloth material 64 is attached to the front and rear mouth frames 61 and 62, the cloth material 64 can be tensioned and attached using the stretchability of the cloth material 64. For this reason, the branches and leaves cut by the cutting device 40 can be smoothly conveyed to the guide cover 70.

  The guide cover 70 includes a guide main body 71 and a drop position adjusting unit 73. The guide cover 70 is configured to be able to adjust the drop position of branches and leaves in order to surely drop the cut branches and trunks between the scissors. The adjustment of the fall position is determined by conditions such as the amount of branches and leaves of the tea tree to be trimmed and the distance from the adjacent cocoon. The guide main body 71 is formed in a duct shape having an open front end and an outer end, and is formed so as to guide the cut leaves and trunk from the front end opening to the outer end opening 71a.

  The drop position adjusting unit 73 includes a top plate 74, a side plate 75 extending downward from the outer edge and rear edge of the top plate 74, and a drop position adjusting unit for the guide main body 71 provided on the top plate 74. 73, and a movement adjustment plate 76 that adjusts the position in the left-right direction, and is formed in a box shape with an open bottom. A sheet-like guide plate 78 having flexibility to guide the fall position of the cut branches and the trunk is attached to the lower part of the side plate 75.

  The movement adjusting plate 76 is provided with a plurality of holes. A knob nut 79 is passed through the hole, and the shaft nut of the knob nut 79 is passed through a long hole 74 a provided in the top plate 74. By fastening the knob nut 79 to the fixing plate 80 extending rearward, the drop position adjusting unit 73 can be fixed to the guide main body 71 so that the position can be adjusted in the left-right direction.

  The drop position adjusting unit 73 is provided on the front side of the fixed plate 80 and is provided so as to be rotatable in the left-right direction with respect to the traveling direction about a support shaft 81 extending in the up-down direction. A guide plate 82 having an arcuate guide groove 82a is mounted on the top plate 74 of the drop position adjusting unit 73, and the back side of the top plate 74 of the drop position adjusting unit 73 can be engaged with the guide groove 82a. An engagement protrusion 74b is provided. When the engagement protrusion 74b comes into contact with the right end of the guide groove 82a, the front portion 75a of the side plate 75 disposed on the outer side in the left-right direction of the drop position adjusting portion 73 is inclined inward as the front portion 75a moves forward. The rotation of the drop position adjusting unit 73 is restricted so that the side portion 75b is inclined inward as it advances rearward in the traveling direction. The position where the rotation of the drop position adjusting unit 73 is restricted is hereinafter referred to as “initial position Ps”. For this reason, the fall position adjusting unit 73 is supported so as to be rotatable from the initial position Ps to the inner side in the traveling direction (arrow B direction) around the support shaft 81.

  A torsion coil spring 84 is inserted into the support shaft 81. One arm portion of the torsion coil spring 84 is in contact with the fixed plate 80, the other arm portion is in contact with the front end portion of the drop position adjusting portion 73, and the torsion coil spring 84 always sets the drop position adjusting portion 73 to the initial position. It is biased toward the position Ps.

  As shown in FIGS. 4A, 5A, and 5B, the trimming device 50 configured as described above is supported along the rear end portion of the support base 51 (see FIG. 1). A support member 54 is provided extending from one end portion in the left-right direction of the base 51 to the middle portion. A support shaft 55 extending in the front-rear direction is provided at the outer end portion of the support member 54, and the support shaft 55 is fixed to a lower portion of the guide main body 71 on the drop position adjusting unit 73 side to thereby guide the main body 71 and the main body 71. The guide cover 70 including the drop position adjusting unit 73 connected to the shaft is rotatable up and down about the support shaft 55.

  A protruding portion 54a that protrudes upward is provided at the intermediate portion in the left-right direction of the support member 54, and a long hole 54b that extends in the vertical direction is formed in the protruding portion 54a. A shaft portion of a knob bolt 56 supported with respect to the guide main body 71 is rotatably inserted into the elongated hole 54b. Therefore, when the knob bolt 56 is rotated to one side, the guide cover 70 can be locked to the support member 54, and when the knob bolt 56 is rotated to the other side, the guide cover 70 is locked to the support member 54. Can be released.

  When the guide cover 70 is rotated upward with respect to the support shaft 55, the cutting frame 60 connected to the guide cover 70 receives a force in the twisting direction. This force acts to deform the cloth material 64 of the cutting frame 60. For this reason, there is no possibility that the load acts on the guide cover 70, the mouth frames 61 and 62 of the cutting frame 60, and the like is damaged. At the same time, the stretchability of the cloth material 64 can be used for tensioning, so that the branches and leaves cut by the cutting device 40 can be smoothly conveyed to the guide cover 70.

  As shown in FIG. 1, the trimming device 50 configured as described above is arranged with the support base 51, the trimming frame 64, and the guide cover 70 extending rearward as shown in FIG. 1. Is disposed at the end of the traveling body 10 in the left-right direction. If the tea garden management machine 1 turns in the arrow A direction in this state, the guide cover 70 disposed on the left side in the left-right direction and far from the cockpit 34 may collide with an obstacle and be damaged.

  However, as shown in FIG. 4A, the guide cover 70 is supported so as to be rotatable in the front-rear direction around a support shaft 81 extending in the up-down direction, and always at the initial position Ps via the torsion coil spring 84. It is energized to the side. Therefore, when external forces F and F ′ act on the side plates 75 (75 a and 75 b) provided outside the guide cover 70, the guide cover 70 resists the bias of the torsion coil spring 84 around the support shaft 81. It rotates in the direction of arrow B.

  For this reason, even if the external forces F and F ′ act on the guide cover 70, the external forces F and F ′ are absorbed by the deformation of the torsion coil spring 84. Therefore, the possibility that the guide cover 70 is damaged can be reliably reduced. At the same time, the drop position adjustment of the guide cover 70 described above can be performed by, for example, adjusting the drop position adjustment unit 73 in the outward direction to the maximum extent with respect to the guide main body 71. By rotating by the external force that comes into contact, the size of the opening where the leaves and the like fall from the drop position adjusting unit 73 can be made appropriate. For this reason, the trouble of finely adjusting the position adjustment of the guide cover 70 (dropping position adjustment unit 73) can be saved.

  In addition, as shown in FIG. 6A (partial rear view), when the tea garden management machine 1 travels forward along the contour line L along the inclined field H, the cuttings arranged on the left side in the traveling direction of the tea garden management machine 1 When the bottom surface 71b of the guide main body 71 of the dropping device 50 ′ is inclined upward toward the guide cover 70, the cut leaves and trunk are not smoothly transferred but stay in the cutting device 50 ′ and are discharged into the claw. There is a risk that it will not.

  However, the guide cover 70 of the trimming device 50 ′ is supported so as to be pivotable in the vertical direction around a support shaft 55 (see FIG. 5B) extending in the front-rear direction, and is guided within a predetermined tilt angle range. The cover 70 can be positioned via the knob bolt 56 (see FIG. 5B). For this reason, as shown in FIG. 6B, when the guide cover 70 of the cutting device 50 ′ disposed on the left side in the traveling direction of the tea garden management machine 1 is held in a state of being rotated upward, the guide body portion The bottom surface 71b of 71 can be made substantially horizontal. Therefore, the cut leaves and trunk can smoothly move the guide main body 71, and the cut branches and stem can be prevented from staying in the cutting device 50 'and not being discharged in the crest. .

  In the embodiment described above, the torsion coil spring 84 is shown as a means for absorbing external force. However, the present invention is not limited to this, and an elastic body such as a tension spring, a compression spring, or rubber may be used instead of the torsion coil spring 84. Good.

  In the above-described embodiment, the side plate 75 provided in the drop position adjusting unit 73 is connected to the top plate 74. However, the side plate 75 is supported so as to be movable with respect to the top plate 74. You may provide elastic bodies, such as a spring and rubber | gum which absorb external force between 74 and the side plate 75. FIG.

  Furthermore, the present invention is not only applied to the tea garden management machine 1, but can also be applied to, for example, a riding type plucking machine, a riding type middle mower, an agricultural working machine, and the like.

1 Tea garden management machine 40 Mowing device 50 Mowing device 60 Mowing frame (conveyance guide)
70 Guide cover 84 Torsion coil spring (buffer member, elastic body)

Claims (3)

A conveyance guide unit that conveys branches and leaves cut from the teacup by the reaping device to the rear of the machine body by airflow;
In cutting off device estates tiller and a guide cover for dropping towards the branches and leaves and stem which reaped provided on the left and right outside of Oite the conveying guide portion to the tip portion of the rear side of the conveying guiding portion to the furrow There,
The guide cover is,
A side plate that is provided so as to be rotatable in the left-right direction with respect to the traveling direction by an axis in the up-down direction, and provided on the outer side in the left-right direction of the position where the branches and leaves are dropped toward the intercostal space;
A buffer member for biasing the side plate so as to absorb an inward external force acting on the side plate of the guide cover ;
Having
A tea garden management machine cutting device. The side plate provided so as to be rotatable inward with respect to the traveling direction by a vertical axis ,
The initial position is adjusted so that its front part tilts inward as it moves forward,
2. The cutting device for a tea garden management machine according to claim 1, wherein The side plate is further adjusted in its initial position so that the rear side portion thereof is tilted inward as it proceeds to the rear side in the traveling direction.
The cutting device for a tea garden management machine according to claim 2.

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