JP5913793B2 - Tea leaf picking machine - Google Patents

Description

  The present invention relates to a tea leaf picking machine capable of picking tea leaves while traveling along a teacup and transporting the picked tea leaves for storage.

  Tea leaf picking machines have been developed in which tea leaves picked up by a cutting blade are transferred by pressure air and stored in a container. This tea leaf plucking machine is, for example, as shown in Patent Document 1, a machine body having a gate-type frame provided with a traveling device capable of running along a teacup across a teacup, and a lower part of the gate-type frame of the machine body The clipper-type cutting blade with the blade tip facing forward in the direction of travel of the machine and the lower opening above the cutting blade extends upward, and the tea leaves cut by the cutting blade are transferred by upward pressure wind A transfer duct, and a rear duct that is disposed on the rear side of the transfer duct in the advancing direction of the transfer duct and sends the downward pressure air taken into the transfer duct as upward pressure air from below the lower opening of the transfer duct into the transfer duct. The container is disposed at the rear of the machine body and accommodates tea leaves transferred by a transfer duct.

  In this tea leaf picking machine, negative pressure is generated in the vicinity of the outlet of the upward pressure wind sent from the back duct into the transfer duct, and the tea leaves cut by this negative pressure are drawn to the rear side of the cutting blade in the machine direction. . Then, the attracted tea leaves are raised in the transfer duct by the upward pressure wind and are accommodated in the container.

JP 2010-11785 (see paragraph 0012, FIG. 3)

  However, those whose tea leaves are short are less susceptible to upward pressure wind and are also less susceptible to negative pressure generated near the pressure wind outlet. For this reason, short tea leaves accumulate on the upper surface of the cutting blade, and are blown off by the movement of the clipper-type cutting blade in the width direction of the machine body. In addition, the short tea leaves accumulated on the upper surface of the cutting blade hinder the smooth picking of tea leaves and roughen the cuts on the picked surface, so that the tea tree is likely to grow sick.

  Also, when the tea leaf plucking machine runs on the surface where the tea leaves are inclined obliquely downward or upward with respect to the aircraft traveling direction, the short tea leaves are less susceptible to the upward pressure wind and the negative pressure suction action that occurs near the outlet. There is a problem that there is a further increase in the possibility of being unaccommodated.

  The present invention has been made to solve such a problem, and provides a tea leaf plucking machine that can surely accommodate short plucked tea leaves in a container without deteriorating the plucked surface of the plucked surface. With the goal.

In order to solve such a problem, the tea leaf plucking machine of the present invention includes a machine body having a gate-type frame provided with a traveling device capable of running along the tea bowl across the tea bowl, and the gate of the machine body. It is arranged so that the vertical position can be adjusted according to the length of the tea leaves to be plucked so that the cutting edge faces the front side in the machine direction in the lower part of the formwork, and extends wide in the machine width direction along the plucking surface of the tea bowl. And a clipper-type cutting blade that cuts tea leaves from the teacup, and has an opening that opens wide in the body width direction above the cutting blade that is wide in the body width direction. The cut tea leaves are transported by the upward pressure wind, and the transfer duct is wide in the width direction of the machine body. The opening that is wide in the width direction of the fuselage using compressed air A rear duct that generates upward pressure air that is wide in the width direction of the machine body and enters the transfer duct from between the cutting blades, a storage unit that stores tea leaves transferred by the transfer duct, and the cutting blade above the machine body traveling direction front side has an outgoing member feed that projects from beauty before Symbol rotation axis Oyo rotary shaft Ru extends along the body width direction, the delivery member to rotate from the front in the upper side of the cutting blade A rotating body that is rotatable so as to move rearward, and the rotating body has a height from the cutting blade according to the length of the tea leaf to be plucked by a vertical position adjusting mechanism provided in the machine body. adjustably provided the of the previous SL before Symbol delivery member that protrudes from the rotating shaft is mounted so as to extend along the axial direction relative to the rotation axis.
Preferably, before Symbol delivery member is provided in a plate shape extending in the vehicle body width direction along the axial direction of the rotary shaft, and good.

  The transfer duct is only required to be able to send upwardly pressurized air, and specifically, may extend in either a vertical direction or an obliquely upward direction.

  The rotating body is rotatably supported by the machine body such that a delivery member projecting from a rotating shaft extending in the machine body width direction moves from the front side to the rear side of the cutting blade. The rotating body may be formed by connecting a plurality of rotating bodies so as to be rotatable in the rotation axis direction. The delivery member may be any material that can be fed to the rear side of the cutting blade without damaging the picked tea leaves. Specifically, the delivery member is made of a brush unit in which a large number of hair materials are planted, or a rubber plate. A plate-like member or cloth may be used.

The rotating body may be supported by the vertical position adjusting mechanism so that the entire rotating body can be moved in the vertical direction . For this reason, in the case where a plurality of rotating bodies are connected in the direction of the rotation axis, the plurality of rotating bodies are integrally supported so as to be movable in the vertical direction. The means for moving the rotating body in the vertical direction may be manual or may utilize the power of the drive source. When a drive source is used, an electric motor, an electric hydraulic cylinder, a hydraulic cylinder, or the like can be used.

The rotating body may be supported by a vertical position adjusting mechanism so that the height can be adjusted in a plurality of stages . The plurality of stages specifically means two or more stages, and the number of height adjustment stages is set according to the length of the tea leaves to be picked.

The rotating body may be supported by a vertical position adjusting mechanism so that the height can be adjusted steplessly . “Stepless” means, for example, moving the rotating body to an arbitrary position within the moving range of the rotating body. Specifically, an actuator such as a hydraulic cylinder is provided between the frame body that supports the rotating body and the machine body, and the power of the actuator is transmitted to the frame body to move the rotating body in the vertical direction. As for the vertical position of the rotating body, a sensor corresponding to the desired vertical position is provided in the airframe, and the operation of the actuator is controlled according to a signal from the sensor to move the rotating body to a desired vertical position.

Rotating body is supported by a pair of support plates for rotatably supporting the axial ends of the rotating shaft, up and down position adjusting mechanism may by supporting the support plate a pair to the pair of fixing plates.

The vertical position adjusting mechanism may include a lock mechanism that locks the movement of the rotating body and a guide mechanism that guides the vertical movement of the rotating body . Specifically, the lock mechanism is provided with a plurality of lock holes provided in the fixed plate with a predetermined interval in the vertical direction, and is supported by the support plate and can approach and separate from the fixed plate. It may have a lock pin that engages with any of the lock holes and locks the movement of the rotating body .

The lock hole may be provided in the fixed plate according to the vertical position of the rotating body with respect to the cutting blade. For this reason, when adjusting the position of the rotating body in multiple stages, a number of lock holes corresponding to the multiple stages may be provided in the fixing plate. In this way, the rotating body is moved in the vertical direction along the guide hole, and when the lock pin is inserted into any of the plurality of lock holes, the rotating body is moved to the vertical position corresponding to the lock hole, The rotating body can be locked to the fixed plate.

The lock pin is connected to an end of an engagement shaft portion that is inserted into and removed from the lock hole and an engagement shaft portion that protrudes to the opposite side of the fixed plate among the engagement shaft portions that are inserted into the through holes. it may have a grip portion extending in a direction substantially perpendicular to the section. Since the gripping portion of the lock pin extends in a direction substantially perpendicular to the engaging shaft portion, when the gripping portion is gripped and pulled to the near side, the engaging shaft portion is moved in the axial direction. Can do. Further, when the grip portion is gripped and pushed, the engagement shaft portion can be moved in the axial direction. For this reason, operation which inserts / extracts a lock pin with respect to a lock hole can be made easy.

Specifically, the guide mechanism includes a guide pin protruding from the surface of the fixed plate on the outer side in the body width direction, and a support plate facing the guide pin extending in the vertical direction through the guide pin. You may have a guide hole which guides a movement and arrange | positions a lock pin facing each lock hole of a some lock hole. The guide hole may extend linearly in the up-down direction, or may extend linearly obliquely upward.

The rotating body can be moved in the vertical direction by the vertical position adjusting mechanism, and further supported so as to be movable from a position above the cutting blade to a position obliquely upward in the direction of travel of the machine body .

  Specifically, the vertical position adjustment mechanism has a lock hole corresponding to a position above the vertical position of the rotating body when picking long tea leaves so that the rotating body is not affected when picking long tea leaves. In addition to being provided in the fixed plate, a guide hole is provided in the support plate so that the lock pin is disposed opposite to the lock hole. Therefore, by moving the rotating body to a higher upper position, when the long tea leaves are transferred by the pressure wind in the transfer duct, the rotating body does not interfere with the transfer of the long tea leaves, and the picked long tea leaves are accommodated Can be securely accommodated.

  According to the present invention, the rotary body is provided so as to be adjustable in height with respect to the cutting blade by the vertical position adjustment mechanism, and the rotary body is freely rotatable so that the feeding member of the rotary body moves from the front side to the rear side of the cutting blade. When picking short tea leaves, the position of the rotating body in the direction of approaching the cutting blade will force the short tea leaves picked up by the cutting blade into the transfer duct by the feeding member of the rotating body. It is sent. For this reason, there is no possibility that the short tea leaves are accumulated on the upper surface of the cutting blade, and the tea leaves are transferred by the upward pressure air flowing in the transfer duct. Further, even when the tea leaf picking machine travels on a saddle that is inclined obliquely with respect to the traveling direction of the machine body, the picked short tea leaves are forcibly fed into the transfer duct by the feeding member of the rotating body. For this reason, it is possible to reliably store the picked short tea leaves in the storage portion, and it is possible to provide a tea leaf picking machine having a good picking surface on which the tea leaves are picked.

The principal part perspective view of the tea leaf plucking machine concerning one embodiment of this invention is shown. The side view of the tea leaf picking machine concerning one embodiment of this invention is shown. The front view of the tea leaf picking machine concerning one embodiment of this invention is shown. The perspective view of the rotating brush provided in the lower part of the transfer duct mounted in the tea leaf picking machine is shown. The partial structure of the transfer duct which provided the rotating brush in the lower part is shown, The figure (a) is a partial top view of a transfer duct, The figure (b) is the partial front view of a transfer duct, The figure (c) FIG. 4 is a partial side view of a transfer duct. The front perspective view of the rotating brush of the tea leaf picking machine concerning one embodiment of the present invention is shown. FIG. 2A is a plan view of the rotating brush, FIG. 2B is a front view of the rotating brush, and FIG. 1C is a side view of the rotating brush. The partial cross section figure of the vertical position adjustment mechanism which adjusts the vertical position of a rotating brush is shown. The perspective view of the lock pin which locks the up-and-down position of a rotating brush, and the base part which supports this is shown. It is principal part explanatory drawing of the tea leaf plucking machine for demonstrating the position of the rotating brush with respect to a cutting blade. It is a principal part front view of the tea leaf plucking machine for demonstrating the position of the rotating brush with respect to a cutting blade. It is principal part explanatory drawing of the tea leaf picking machine for demonstrating the effect | action of the tea leaf picking according to the position of a rotating brush.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  The tea leaf plucking machine 1 of the present invention is a riding type plucking machine as shown in FIG. 2 (side view) and FIG. 3 (front view). The tea leaf plucking machine 1 includes a machine body 10 having a gate-type frame 11 provided with a traveling device 3 capable of running along a teacup across a teacup and a lower part of the gate-type frame 11, and the cutting edge is the machine body. A clipper-type cutting blade 25 (refer to FIG. 10) facing forward in the traveling direction, a transfer duct 30 for transferring tea leaves cut by the cutting blade 25 by upwardly pressurized air, and a rear side of the transfer duct 30 in the forward direction of the body. A rear duct 40 (see FIG. 10) that feeds the downward pressure wind taken inside into the transfer duct 30 as upward pressure wind, a container 50 that accommodates tea leaves transferred by the transfer duct 30, and a cutting The blade 25 is configured to have a rotating brush 60 that is rotatably supported at an upper position on the front side in the machine body traveling direction.

  The airframe 10 includes a front frame 12 and a rear frame 13 that constitute a portal frame 11 formed in a front view gate shape so as to be able to run while straddling a teacup, and the front frame 12 and the rear frame 13. A pair of left and right upper connection frames 14 for connecting the upper parts and a pair of left and right lower connection frames 15 for connecting the lower ends of the front frame 12 and the rear frame 13 are provided.

  The front frame 12 and the rear frame 13 have horizontal frame portions 12a and 13a extending in the width direction that can be expanded and contracted by a double tube structure, and a rack-and-pinion is provided at the center in the width direction of the horizontal frame portion 12a. The type of gauge extension / contraction mechanism is built in, and the gauge of the tea leaf plucking machine 1 can be extended and reduced.

  A traveling device 3 including a hydraulic drive wheel 4, a driven wheel 5, and a rubber or iron crawler 6 is integrally assembled with the lower connection frame 15. Above one traveling device 3, a hydraulic tank (not shown) for storing hydraulic oil for operating various hydraulic actuators mounted on the airframe is disposed, and above the other traveling device 3. Is equipped with an engine fuel tank (not shown) as a power source of the tea leaf plucking machine 1. In addition, the traveling apparatus 3 is not limited to the thing using a crawler, For example, a wheel, a rail type, etc. may be sufficient.

  An upper deck on which an operator and heavy objects can be mounted is provided on the upper surface of the frame portion 12a extending in the width direction with respect to the machine body traveling direction of the front frame 12. A maneuvering unit 17, an operating handle (not shown) and a cockpit 18 are disposed on one end side in the width direction of the upper deck, and an engine integrated with a hydraulic pump is disposed on the other end side in the width direction of the upper deck. (Not shown) is provided, and a blower (not shown) is provided at the center in the width direction of the upper deck.

The control unit 17 is a touch panel type in which a control unit for performing machine operation and tea garden management work (plucking work) is incorporated (for example, the cutting value of the cutting blade 25, the amount of expansion and contraction between gauges, etc. as input numerical values). A display unit, an ignition switch, an operation changeover switch for preventing an error between the display height of the input operation display unit and the actual pruning height according to the work mode (all not shown) are provided.

  Further, the control unit of the control unit 17 performs posture control of the plucking device, for example, fine cutting height control, based on detection values from various on-vehicle detection means, travel history information, input information, and the like. In addition to being set in advance, it has a function of storing and displaying travel history information by GPS (navigation system), for example, travel distance information, travel speed information, etc., and sending it via a communication line.

  Instead of the GPS configuration, travel distance information, travel speed information and work contents (for example, information data such as date / time / work time / weather / work place / work type / work conditions) sent from the control unit ) Can be automatically stored and stored in a control device (for example, PCL: programmable logic controller) (not shown) mounted in the tea leaf plucking machine 1. Then, by connecting the control device and the personal computer, the information data stored and stored in the control device is extracted from the personal computer. Thereby, it becomes possible to manage the contents of work easily without using GPS, and the cost of the tea leaf plucking machine 1 can be suppressed.

  An operation handle (not shown) and a control seat 18 on which an operator is seated are disposed behind the control unit 17.

  The engine is disposed in a box-type engine cover 19 having a plurality of vent holes. Hydraulic oil is supplied to the traveling device 3 and each hydraulic actuator for picking work by a hydraulic pump integrated with the engine. The hydraulic oil sent to each hydraulic actuator is cooled by a fan-type oil cooler (not shown) and then returned to the hydraulic oil tank.

  The blower is disposed in a fan cover 20 disposed adjacent to the control unit 17. This blower is a belt drive type, generates a pressure wind for transferring tea leaves cut from tea trees toward the container 50, and is driven by a switching lever (not shown) provided beside the cockpit 18. Stop switching is performed. The pressure air generated by the blower is sent to the rear duct 40 (see FIG. 10) through a flexible pipe (not shown).

  A cutting blade 25, a transfer duct 30, and a rear duct 40 are disposed between the upper deck and the rear frame 13.

  As shown in FIG. 2, the transfer duct 30 is connected at its lower part to a pair of left and right first elevating bodies 22 provided so as to be movable up and down along the legs 13 b of the rear frame 13 (not shown). The cutting height position of the cutting blade 25 can be adjusted. Moreover, this 1st raising / lowering body 22 is supporting the container 50 so that isolation | separation is possible from the downward side.

  Between the left and right first lifting bodies 22, there is provided an automatic center mechanism (not shown) for accurately aligning the center of the cutting blade 25 with the center of the gauge of the left and right traveling devices 3. The automatic center mechanism is associated with the lower ends of a pair of left and right chains that are attached to the upper portion of the rear frame 13 and fed out synchronously from a hydraulic winding device (not shown) that is driven and controlled by a control unit. The pair of first elevating bodies 22 can be moved up and down synchronously by feeding or winding the chain. Thereby, according to the raising / lowering operation | movement of the 1st raising / lowering body 22, the transfer duct 30, the tea leaf separation frame 55 mentioned later, and the container 50 can be raised / lowered. The tea leaf separation frame 55 is disposed at the upper part of the container 50 and communicates with the transfer duct 30, and a wire mesh (not shown) for separating the tea leaves transferred from the transfer duct 30 from the pressure wind and dropping them into the container 50. I have.

  As shown in FIGS. 2, 4, 5 (a), 5 (b), and 5 (c), the transfer duct 30 is inclined slightly rearward from the upper portion of the cutting blade 25 and extends upward. It is formed so as to face the upper side of the container 50. The transfer duct 30 includes a pair of branch pipes 31 extending in a bifurcated manner in the middle, and the tea leaves are transferred in the machine body width direction by these branch pipes 31. An upper opening (not shown) that opens rearward and communicates with the tea leaf separation frame 55 is provided at the upper part of the branch pipe 31. These branch pipes 31 are connected to a pipe portion 32 constituting the lower side of the transfer duct 30. A lower opening 33 (see FIG. 5B) that opens forward is provided at the lower portion of the pipe portion 32.

  Although details will be described later, the lower opening 33 opens in a rectangular shape so as to include the entire cutting blade 25 in a front view.

  The rear duct 40 is provided along the rear surface portion 30 a of the transfer duct 30. An upper surface portion 40a of the rear duct 40 is formed in a mountain shape, and a connection port 41 to which a flexible tube is connected is provided on the top portion. The downward pressure air taken into the flexible pipe is sent into the transfer duct 30 as upward pressure air by the air outlet 48 (see FIG. 10) opened at the lower front end of the rear duct 40. Details of the air outlet 48 will be described later.

  As shown in FIGS. 4 and 10, the cutting blade 25 includes two upper and lower clipper blades arranged so that the blade tip faces the front side. The cutting blade 25 is disposed at the lower end portion of the transfer duct 30 through which the pressure wind flows from below to above, and the cutting blade support frame 43 is detachably supported from the lower surface portion 40b of the rear duct 40. Supported by The two clipper blades of the cutting blade 25 are reciprocated in the width direction by a hydraulic motor 27 protected by a guard protruding from the lower opening 33 of the transfer duct 30 to the outside of the machine body. When viewed from the front of the machine body 3, the cutting blade is formed so as to be convex upward. In the embodiment, the case where the radius of curvature is about 3000 mm is shown.

  The reason why the hydraulic motor 27 extends beyond the lower opening 33 outside the machine body is to use a cutting blade (for example, 1900 mm) wider than the tea tree width (for example, 1800 mm) so that there is no uncut portion. is there. The hydraulic motor 27 may be arranged on one end side of the lower opening 33 or on the other end side.

  A priority valve (not shown) serving as a flow priority extraction valve is interposed in an oil passage connecting the hydraulic motor 27 and the engine hydraulic pump. The priority valve is a valve that can always give priority to the constant hydraulic pressure (flow rate) regardless of the hydraulic pressure (pump flow rate) discharged by the hydraulic pump, and can respond to the cutting work regardless of the increase or decrease of the engine speed. The hydraulic pressure at which the driving speed of the cutting blade 25 is always obtained is supplied to the hydraulic motor 27. For this reason, when the engine speed is increased, the air flow generated by the blower is increased, but the cutting blade speed is not increased, and the cutting blade speed corresponding to the cutting operation is always maintained.

  As shown in FIG. 10, the cutting blade support frame 43 that supports the cutting blade 25 is configured to include two upper and lower flat plate members 43 a and 43 b that are fixed in a state of being displaced forward and backward. Bolts are fixed to the upper surface side of the lower flat plate member 43b so that the lower surface portion 40b of the rear duct 40 can be attached and detached. Further, a diverting member 44 using an angle or the like for sending downward pressure air taken into the rear duct 40 into the transfer duct 30 as upward pressure air is integrally formed on the upper surface of the upper flat plate member 43a. It is fixed to the joint.

  The downward pressure air in the back duct 40 and the upward pressure air in the transfer duct 30 are separated by the rear surface portion 30a of the transfer duct 30, and the lower end portion 30a1 of the rear surface portion 30a of the transfer duct 30 is After descending obliquely from above toward the deflecting member 44, it is bent substantially horizontally so as to face the vertical surface 44 a of the deflecting member 44 with a predetermined lateral width (distance) w <b> 1. At this time, for example, when the lateral width w1 is 4 mm, the height (distance) h1 between the lower end 30a1 of the rear surface 30a of the transfer duct 30 and the horizontal surface of the deflecting member 44 is preferably 7 mm. This is to increase the speed of the pressure air blown from the air outlet 48. In addition, the numerical value of w1 and h1 which forms the blower outlet 48 mentioned above is an example, and is not limited to it. Moreover, w1 and h1 in the case of a cassette blade and a unit blade are arbitrary.

  In this way, the downward pressure air taken into the rear duct 40 is converted into the upward pressure air by the rear surface portion 30a of the transfer duct 30 and the cutting blade support frame 43 provided with the deflecting member 44. An air outlet 48 is formed for feeding into the air.

  The rear surface portion of the transfer duct 30 caused by the pressure air in the rear duct 40 is located between the center of the rear surface portion 30a of the transfer duct 30 forming the outlet 48 in the body width direction and the center of the lower surface portion 40b of the rear duct 40 in the width direction. A vibration regulating member 46 for regulating the vibration of 30a is provided.

  As shown in FIG. 6 (perspective view), FIG. 7 (a), FIG. 7 (b), and FIG. 7 (c), the rotating brush 60 is rotatably supported by a frame 61 that extends in the body width direction. A hydraulic motor 70 is provided at one end portion in the width direction of the frame body 61, whereby the rotary brush 60 is driven to rotate. The frame body 61 has a pair of support plates 62 arranged opposite to each other in the body width direction, and a connecting member 63 that connects the upper ends of these support plates 62.

  As shown in FIG. 7B, the connecting member 63 is formed in a mountain shape when viewed from the front, and a central stay 64 extending downward from the lower surface of the connecting member 63 is provided at the center of the connecting member 63 in the body width direction. ing. The rotating brush 60 is provided between the center stay 64 and the one side support plate 62 and between the center stay 64 and the other side support plate 62, respectively. That is, two rotating brushes 60 are arranged in a state of being connected to the frame body 61 in the machine body width direction.

  The rotating brush 60 includes a rotating shaft 65 rotatably supported between a support plate 62 and a central stay 64, two mounting frames 66 projecting along the axial direction of the rotating shaft 65, and mounting of these. And a brush unit 67 detachably attached to the frame 66.

  The rotation shaft 65 of each rotary brush 60 is provided in an inclined state so that the inner side in the axial direction is positioned higher than the outer side. The outer end of the rotating shaft 65 is rotatably supported by a bearing (not shown) provided on the support plate 62, and the inner end of each rotating shaft 65 is provided with a universal joint 72 provided on the central stay 64. It is connected and supported so that it can rotate freely. A hydraulic motor 70 is provided outside the support plate 62 on one side, and this hydraulic motor 70 is connected to a rotating shaft 65 of the rotating brush 60 so that power can be transmitted. For this reason, when the hydraulic motor 70 is driven, the two rotary brushes 60 rotate simultaneously. The rotating direction of the rotating brush 60 is a direction in which the bristle 67a of the rotating brush 60 advances from the front side to the rear side of the cutting blade 25, as indicated by an arrow A in FIG.

  As shown in FIG. 7B, the two attachment frames 66 are arranged on one side and the other side in the axial direction with respect to the axial center of the rotating shaft 65 and are symmetrical with respect to the central axis of the rotating shaft 65. Placed in position. For this reason, when the brush unit 67 provided on one attachment frame 66 rotates to the lower position with respect to the rotation shaft 65, the other brush unit 67 moves to the upper position with respect to the rotation shaft 65. The attachment frame 66 is formed so that the protruding length becomes longer as it goes from the axial center side of the rotating shaft 65 to the axial end side.

  As shown in FIG. 1, the brush unit 67 includes a plurality of bristle materials 67a and a brush base 67b in which these bristle materials 67a are planted. The bristle 67a is formed so that the outer bristle 67a adjacent to the longitudinal direction of the mounting frame 66 extends slightly longer than the inner bristle 67a and follows the curvature of the cutting blade 25.

  The support plate 62 that supports the rotating brush 60 has a substantially rectangular shape in a side view, and a bearing (not shown) that supports the rotating shaft 65 of the rotating brush 60 is provided at the lower front side of the supporting plate 62. The connecting member 63 is attached to the front upper portion of the support plate 62. For this reason, the support plate 62 is in a state of protruding rearward with respect to the rotation shaft 65 of the rotary brush 60. Two guide holes 62a extending in the vertical direction are provided at the upper and lower portions of the portion protruding rearward.

  These guide holes 62a, as will be described in detail later, guide the movement of the rotary brush 60 in the vertical direction by inserting guide pins 76 projecting from a fixed plate 75 attached to the rear frame 13. These guide holes 62a are formed in a long hole shape and have substantially the same width dimension and length. The guide hole 62a provided in the upper part is provided at a position shifted forward from the guide hole 62a provided in the lower part to suppress the inclination of the rotary brush 60 in the front-rear direction when the rotary brush 60 moves up and down. ing.

  A lock pin 78 is provided on the upper rear side of the support plate 62. The lock pin 78 engages with a lock hole 75 a provided in the fixed plate 75 to lock the rotary brush 60 to the body 10. As shown in FIG. 8 (partial sectional view) and FIG. 9, the lock pin 78 is formed in an inverted L shape and is inserted into a through hole 62 b provided in the support plate 62 to engage with the lock hole 75 a. It has a shaft portion 78a and a grip portion 78b that is connected to the end portion of the engagement shaft portion 78a and extends in a direction substantially orthogonal to the engagement shaft portion 78a. The lock hole 75a and the lock pin 78 are collectively referred to as a lock mechanism 74 hereinafter.

  A plate-like projecting portion 78c projecting outward is provided on the distal end side of the engaging shaft portion 78a, and this projecting portion 78c has a locking pin 82 that is inserted into and removed from a pedestal portion 80 provided on the support plate 62. It is fixed. The locking pin 82 is inserted into a hole 80d provided in a top plate portion 80a of a pedestal portion 80, which will be described later, with the engagement shaft portion 78a being inserted into the lock hole 75a, and the engagement shaft portion 78a is locked. When the locking pin 82 is removed from the hole 75a, the locking pin 82 is also removed from the hole 80d, and when the lock pin 78 is rotated, the tip of the locking pin 82 contacts the top plate 80a. . For this reason, the state in which the engagement shaft portion 78a is removed from the lock hole 75a can be maintained.

  A compression coil spring 83 is inserted into the engagement shaft portion 78a on the tip side of the projecting portion 78c. One end of the compression coil spring 83 contacts a retaining ring 84 attached to the end of the support plate 62, and the other end of the compression coil spring 83 contacts a protrusion 78c. The coil spring 83 is inserted into the engagement shaft portion 78a in a contracted state. For this reason, when the lock pin 78 is inserted into the lock hole 75a, the compression coil spring 83 extends from the contracted state to facilitate the movement of the lock pin 78 to the lock hole side, while the lock pin 78 is removed from the lock hole 75a. At the time of removal, the compression coil spring 83 is compressed and acts to suppress the movement of the lock pin 78 in the removal direction.

  The pedestal portion 80 that supports the lock pin 78 is disposed so as to straddle the through hole 62b provided in the support plate 62, and has a top plate portion 80a having a hole portion 80b through which the engagement shaft portion 78a is inserted, and the top plate It has a pair of leg portions 80c extending from both ends of the portion 80a to the support plate side. The tips of these leg portions 80 c are fixed to the support plate 62, and the pedestal portion 80 is provided on the support plate 62. The top plate portion 80a is provided with a plurality of holes 80d through which the aforementioned locking pins 82 are inserted.

  As shown in FIG. 1, the guide hole 62 a extending in the shape of a long hole is such that when the guide pin 76 protruding from the fixing plate 75 moves to the upper end position of the guide hole 62 a, The rotary brush 60 is moved to a position near the surface of the cutting blade 25 and moved to a lower position PL (see FIGS. 5B and 10) where a short tea leaf can be picked. Further, the guide hole 62a is configured such that when the guide pin 76 protruding from the fixed plate 75 moves to the lower end position of the guide hole 62a, the rotating brush 60 is placed at the upper position PU (see FIGS. 10 and 11) where a long tea leaf can be picked. It is formed to move.

  The guide pin 76 only needs to protrude from the fixed plate 75, and in this embodiment, a bolt is used and can be attached to and detached from the fixed plate 75. When a bolt is used as the guide pin 76 as described above, the guide pin 76 can be attached to the fixed plate 75 in a state where the support plate 62 is disposed opposite to the fixed plate 75 when the rotating brush 60 is mounted on the tea leaf picking machine 1. Therefore, the workability of the assembly work of the rotating brush 60 can be improved.

  The lock hole 75a provided in the fixed plate 75 has a position where the tip of the engagement shaft portion 78a of the lock pin 78 faces when the rotary brush 60 is moved to the upper position PU, and the rotary brush 60 at the lower position PL. It is provided at a position where the tip end of the engagement shaft portion 78a faces when moved. That is, the fixing plate 75 is provided with two lock holes 75a spaced apart in the vertical direction. Therefore, as shown in FIG. 10, the rotary brush 60 can be locked to the machine body 10 with the rotary brush 60 moved to the lower position PL (see FIG. 1), and the rotary brush 60 is moved to the upper position PU. The rotary brush 60 can be locked to the body 10 in the state of being moved to (see FIG. 11).

  The guide pin 76 and the guide hole 62a are collectively referred to as a guide mechanism 77 (see FIG. 1). Further, the lock hole 75a, the lock pin 78, the guide pin 76, and the guide hole 62a are collectively referred to as a vertical position adjusting mechanism 85 hereinafter. That is, the vertical position adjusting mechanism 85 is configured to include the lock mechanism 74 including the lock hole 75 a and the lock pin 78 and the guide mechanism 77.

  As shown in FIG. 10, the lower opening 33 of the transfer duct 30 has such a size that the hair 67a of the rotating brush 60 does not come into contact with the rotating brush 60 even when the rotating brush 60 is rotated to the lower position PL or the upper position PU. It is open. That is, the position where the lower opening 33 has a gap above the upper end of the rotation locus of the tip of the bristle 67a of the rotating brush 60 with the rotating brush 60 moved to the upper position PU from the upper surface of the cutting blade 25. It is formed to open up to. Further, a rubber plate 35 or the like is provided in the gap between the connecting member 63 and the front surface of the transfer duct 30 to prevent leakage of pressurized air (see FIG. 1).

  As shown in FIG. 2, the container 50 is composed of an aluminum frame having a panel material with vents around it, and supports the container 50 so that the container 50 can turn toward the rear side of the machine body. It is supported by the body 10 through the frame 51. A pair of left and right shift hydraulic cylinders 52 and a link mechanism (not shown) are disposed between the machine body 10 and the container 50, and the container 50 is rotatable toward the rear side of the machine body.

Thus, the rotary brush 60 is provided in the tea leaf plucking machine 1 so that the position can be adjusted in the vertical direction by the vertical position adjusting mechanism 85. By the way, as described above, when plucking a short tea leaf, if there is no rotating brush 60, the short tea leaf accumulates on the rear side of the upper surface of the cutting blade 25. Because the cut surface of the plucked surface is roughened, tea trees are more likely to become ill. For this reason, it is necessary to prevent short tea leaves from accumulating on the cutting blade 25. Therefore, by moving the rotary brush 60 in the lower position P L, so that is moved to forcibly transfer ducts 3 in 0 short tea leaves on the cutting blade 25 by the rotation of the rotary brush 60.

  On the other hand, when plucking long tea leaves, if the rotating brush 60 is in a position close to the cutting blade 25, the long tea leaves hit the rotating shaft 65 of the rotating brush 60 and the movement of the long tea leaves is restricted, and the cutting blade 25 moves the tea leaves. As a result, there is an increased possibility that the cutting will be worsened and the container 50 will not be accommodated. For this reason, it is necessary to prevent a long tea leaf from hitting the rotating shaft 65 of the rotating brush 60. Therefore, the rotary brush 60 is moved to an upper position where there is no influence of the rotary brush 60 when plucking a long tea leaf, so that the transfer space between the lower side of the rotary locus of the rotary brush 60 and the cutting blade is widened.

  When the short tea leaves Ts are picked by the tea leaf plucking machine 1 configured in this way, the rotary brush 60 is moved to the lower position PL after adjusting the vertical position of the cutting blade 25. When the rotating brush 60 is rotated in the direction of arrow A while the tea leaf plucking machine 1 is traveling forward, the upper side of the tea tree T is cut by the cutting blade 25 and the tea leaf Ts having a short length is picked. The picked tea leaves Ts are forcibly moved to the rear side of the cutting blade 25 by the rotation of the bristle 67a of the rotary brush 60, and are transferred upward in the transfer duct 30 by the pressure air discharged upward from the air outlet 48. And accommodated in a container 50 (see FIG. 2).

  For this reason, it is possible to reliably prevent the short tea leaves Ts from accumulating on the rear side of the cutting blade 25, improve the cut leaves of the tea leaves Ts, and accommodate most of the picked short tea leaves Ts in the container 50. Can do. Even when the tea leaf plucking machine 1 travels on a saddle that is inclined obliquely with respect to the traveling direction of the machine body, the short tea leaves Ts that have been picked are forcibly sent into the transfer duct 30 by the hair 67a of the rotating brush 60. The short tea leaves Ts plucked regardless of the inclination of the machine body 10 can be reliably accommodated in the container 50.

  On the other hand, as shown in FIG. 12B, when plucking a long tea leaf TL, the rotary brush 60 is moved to the upper position PU after the vertical position of the cutting blade 25 is adjusted. Then, when the rotary brush 60 is rotated in the direction of arrow A while the tea leaf plucking machine 1 is traveling forward, the upper side of the tea tree T is cut by the cutting blade 25 and the long tea leaf TL is plucked. The plucked tea leaves TL are transferred upward in the transfer duct 30 by the pressure air discharged upward from the air outlet 48 and are accommodated in the container 50. In addition, since the space part 87 is provided between the rotating brush 60 and the rear surface part 30a of the transfer duct 30, even if the long tea leaf TL is plucked by the cutting blade 25, the long tea leaf TL remains in the space part 87. Therefore, there is no possibility that the transfer of the long tea leaves TL caused by the pressure wind will be obstructed by the rotating brush 60.

  For this reason, most of the long tea leaves TL that have been plucked can be accommodated in the container 50 with a good cut mark.

  Further, since the two rotary brushes 60 arranged in the machine body width direction are provided integrally with the frame body 61, these rotary brushes 60 move up and down integrally. For this reason, the workability | operativity of the vertical position adjustment work of the rotating brush 60 whole can be improved.

  When the rotary brush 60 is moved from the upper position PU to the lower position PL, or from the lower position PL to the upper position PU, as shown in FIGS. 1, 8, and 9, a pair provided in the body width direction. The lock lever 78 is moved so that the grip portion 78 b of the lock lever 78 on one side of the lock lever 78 moves away from the support plate 62. When the lock lever 78 moves, the engagement shaft portion 78a of the lock lever 78 is pulled out of the lock hole 75a against the bias of the compression coil spring 83. At the same time, the locking pin 82 provided on the protruding portion 78c is removed from the hole 80d. When the grip portion 78b of the lock pin 78 is rotated about the engagement shaft portion 78a, the distal end portion of the locking pin 82 faces and abuts the top plate portion 80a. For this reason, the state in which the engagement shaft portion 78a is removed from the lock hole 75a can be maintained.

  Further, the lock lever 78 on the other side is operated in the same manner as the lock lever 78 on the one side described above, and the engagement shaft portion 78a is maintained in a state of being removed from the lock hole 75a. Then, the rotating brush 60 is moved to the lower position PL or the upper position PU. When the rotating brush 60 moves to the lower position PL or the upper position PU, the one-side lock lever 78 is rotated so that the tip of the locking pin 82 moves to a position facing the hole 80d. When the tip of the locking pin 82 moves to a position facing the hole 80d, the compression pin 83 is compressed and the compression coil spring 83 is extended, and the locking pin 82 is inserted into the hole 80d. The other side of the rotating brush 60 is locked to the machine body 10 by being inserted into the lock hole 75a.

  Accordingly, the two rotating brushes 60 are in a state where both sides in the axial direction are locked to the machine body 10, and the vertical position adjustment work for the entire rotating brush 60 is completed.

  As described above, the vertical position adjustment work of the rotating brush 60 is performed by operating the lock lever and moving the rotating brush 60 up and down. For this reason, there is no difficult operation in the vertical position adjustment work of the rotary brush 60, and the position adjustment work of the rotary brush 60 can be easily performed.

  In the above-described embodiment, as shown in FIG. 10, when the rotary brush 60 is moved to the upper position PU, a space portion 87 is formed between the inner surface of the transfer duct 30 and the rotary brush 60. Long tea leaves can be transported through 87. However, since this space portion 87 is narrower than the internal space 30 b of the transfer duct 30, a long tea leaf hits or wraps around the rotating shaft 65 of the rotating brush 60, and a part of the picked tea leaf is accommodated in the container 50. There is a risk that it will not be.

  Therefore, as shown by a two-dot chain line B, when picking up a long tea leaf, the position of the rotary brush 60 is moved forward and obliquely above the upper position PU to the storage position PK outside the lower opening 33. May be. If it does in this way, the tea leaves plucked by the cutting blade 25 will flow in the interior space 30b wider than the space portion 87 without being obstructed by the rotating brush 60. For this reason, the plucked long tea leaf can be reliably accommodated in the container 50.

DESCRIPTION OF SYMBOLS 1 Tea leaf picking machine 3 Traveling apparatus 10 Airframe 11 Gate frame 25 Cutting blade 30 Transfer duct 33 Lower opening (opening)
40 Rear duct 50 Container (container)
60 Rotating brush (Rotating body)
62 Support plate 62a Guide hole 65 Rotating shaft 67a Hair material (delivery member)
74 Lock mechanism 75 Fixing plate 75a Lock hole 76 Guide pin 77 Guide mechanism 78 Lock pin 78a Engagement shaft portion 78b Holding portion 85 Vertical position adjustment mechanism TL Long brown leaf

Claims (6)

An airframe having a gate-shaped frame provided with a traveling device capable of traveling along the teacup across the teacup;
In the lower part of the portal frame of the machine body, the blade edge is arranged so that the vertical position can be adjusted according to the length of the tea leaves to be picked so that the blade edge faces the front side in the machine body traveling direction, and the machine width direction along the picking surface of the tea bowl A hair clipper-type cutting blade extending widely to cut tea leaves from the teacup,
The machine width direction that has an opening that opens wide in the machine width direction above the cutting blade that is wide in the machine width direction and extends upward, and the tea leaves cut by the cutting blade are transferred by upward pressure wind A wide transfer duct,
From the gap between the opening and the cutting blade that is wide in the body width direction by using the downward pressure wind that is disposed in the body width direction on the rear side of the transfer duct in the body traveling direction and is taken in the interior. A rear duct that generates upward pressure air that is wide in the fuselage width direction and that goes into the transfer duct;
A storage unit for storing tea leaves transferred by the transfer duct;
It has a member out feed that projects from beauty before Symbol rotation axis Oyo rotary shaft Ru extends along the body width direction above the aircraft traveling direction front side of the cutting blade, the delivery member to rotate the cutter blade A rotating body that is rotatable to move from the front to the rear on the upper side;
With
The rotating body is provided so that the height from the cutting blade can be adjusted according to the length of the tea leaf to be plucked by the vertical position adjusting mechanism provided in the machine body,
Before SL project that before Symbol delivery member from the rotational axis is mounted so as to extend along the axial direction relative to the rotation axis,
A tea leaf plucking machine. Before Symbol delivery member is provided in a plate shape extending in the vehicle body width direction along the axial direction of the rotary shaft,
The tea leaf plucking machine according to claim 1. A pair of fixing plates extending along the aircraft traveling direction are provided on both sides of the portal frame in the aircraft width direction,
The rotating body is supported by a pair of support plates that rotatably support both axial ends of the rotating shaft,
The vertical position adjusting mechanism includes a guide mechanism that guides the entire vertical movement of the rotating body and a lock mechanism that locks the movement of the entire vertical position of the rotating body, and the pair of support plates are connected to the pair of support plates. Support the fixed plate,
The lock mechanism includes a plurality of lock holes provided in the fixed plate with a predetermined interval in the vertical direction, and is supported by the support plate and is capable of approaching and separating from the fixed plate. It has a lock pin that engages with any of the lock holes and locks the entire vertical movement of the rotating body,
The lock pin is provided at an end of the engagement shaft that protrudes to the opposite side of the fixed plate among the engagement shaft that is inserted into and removed from the lock hole and the engagement shaft that is inserted through the lock hole. The tea leaf plucking machine according to claim 1, further comprising: a grip portion that is connected and extends in a direction substantially orthogonal to the engagement shaft portion. The tea leaf plucking machine according to any one of claims 1 to 3, wherein the rotating body is supported by the vertical position adjustment mechanism so as to be adjustable in height in a plurality of stages. The tea leaf plucking machine according to any one of claims 1 to 3, wherein the rotating body is supported by the vertical position adjustment mechanism so that the height can be adjusted steplessly. The rotary body can be moved in the vertical direction with respect to the cutting blade by the vertical position adjusting mechanism, and can be further moved to a position obliquely upward from the upper position of the cutting blade in the advancing direction of the machine body. It is supported. The tea leaf plucking machine in any one of Claim 1 to 5 characterized by the above-mentioned.

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