JP2006081514A - Sulky tea leaf plucking machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sulky tea leaf plucking machine in which a container can be placed on the bed of a truck without disturbing its balance and can have the structure of the machine body simplified. <P>SOLUTION: The container for receiving plucked tea leaves is arranged rotationally to a rear part of the machine body and an exhaustion door is attached to the container in conjugation with the rotation of the container toward the rear side of the machine body so that the raw tea leaves in the container may become exhaustable. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a riding-type tea leaf plucking machine, and more particularly to a riding-type tea leaf plucking machine that employs a container system for a fresh leaf container.

  In general, in a riding type tea leaf picking machine that adopts a container system for a fresh leaf container, it is necessary to directly transfer fresh leaves (picked tea leaves) contained in a container to a truck bed, unlike the tea bag method. Therefore, for example, the riding tea leaf plucking machine described in Patent Document 1 is configured such that the container provided at the rear part of the machine body can be raised and slidable toward the rear of the machine body, and the bottom part of the container is opened and closed by a hydraulic cylinder. A possible configuration is disclosed. Then, when the container is appropriately moved so as to be positioned on the truck bed and the bottom of the container is opened, the fresh leaves accommodated in the container are stacked on the truck bed.

However, in the above-described conventional riding tea leaf plucking machine, the container is configured to accommodate about 350 to 400 kg of fresh leaves. Therefore, if a container filled with fresh leaves is lifted so as to be positioned on the truck bed and slid toward the rear of the aircraft, the center of gravity of the aircraft will move greatly, and depending on the field conditions, the aircraft balance may be lost. was there.
In addition, since the container is configured to be lifted and slidable toward the rear of the body, there is a problem that the structure of the body is complicated.

JP 2000-125643 A

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and it is possible to position the container on the truck bed without breaking the balance of the fuselage. An object of the present invention is to provide a riding tea leaf plucking machine capable of simplifying the structure of the machine body.

In order to achieve the above object, the invention according to claim 1 is a riding type tea leaf plucking machine comprising: a machine body for plucking tea leaves while traveling over a teacup; and a container for housing the plucked tea leaves. ,
The container is provided in the airframe so as to be rotatable toward the rear side of the airframe.

  In order to achieve the above object, in addition to the configuration of the invention described in claim 1, the container described in claim 2 is interlocked with the container rotating in the rearward direction of the body. And a discharge door that allows the tea leaves in the container to be discharged.

  In order to achieve the above-mentioned object, the invention according to claim 3 adds the structure of the invention according to claim 2, and moves the discharge door in conjunction with the container rotating toward the rear side of the machine body. The opening / closing interlock mechanism that opens is meshed with an urging means that constantly urges the discharge door in the opening direction, a plurality of sprockets provided on the machine body and the container, and a sprocket provided on the machine body and the container. In this state, a chain stretched between the machine body and the discharge door is provided, and one of the sprockets provided on the housing body moves the chain with the rotation of the housing body. The discharge door is opened by drawing it according to the urging force of the urging means, and the discharge door is closed by pulling the chain against the urging force of the urging means.

  In order to achieve the above object, the invention described in claim 4 is characterized in that, in addition to the configuration of the invention described in claim 1, the container is provided on the machine body so as to be movable up and down.

  According to the first aspect of the present invention, the container is configured to rotate toward the rear side of the machine body. Thereby, since the container does not slide and move toward the rear side of the machine, even if the container is full of plucked tea leaves, the center of gravity of the machine can be reduced.

  According to the second aspect of the present invention, when the container is rotated toward the rear side of the machine body, the discharge door is interlocked and the picked tea leaves stored in the container are discharged therefrom. Thereby, in addition to the effect of the invention of the first aspect, when the picked tea leaves accommodated in the container are reloaded to the transportation means, the container does not slide toward the rear of the machine body. Even if the container is full of plucked tea leaves, the center of gravity moves less and the balance of the aircraft can be stabilized. In addition, since the picked tea leaves are discharged from the container that is tilted by rotating to the rear side of the machine body, it is not necessary to provide a discharge device such as a conveyor at the bottom of the container, and can be configured at low cost.

  According to the third aspect of the present invention, one of the sprockets provided in the housing body extends the chain according to the urging force of the urging means as the housing body rotates, or the urging force of the urging means is used. The drain door is opened and closed by pulling the chain against it. Thus, in addition to the operational effect of the invention described in claim 2, since the hydraulic actuator and the parallel link mechanism are not used to open and close the discharge door, the structure of the airframe can be greatly simplified. As a result, the weight of the machine can be reduced, the number of parts can be reduced, and the cost can be reduced.

  According to the invention described in claim 4, the container is moved up and down to a position corresponding to the height of the loading platform of the transportation means. Thereby, in addition to the effect of invention of Claim 1, the picked tea leaf in a container can be transshipped according to the loading platform of all the transportation means.

  When the container is rotated toward the rear side of the machine body, the discharge door that allows the tea leaves in the container to be discharged opens, and the movement of the container to the rear of the machine body is reduced. A riding-type tea leaf picking machine that does not collapse easily has been realized.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a riding type tea leaf plucking machine to which the present invention is applied, FIG. 2 is a side view of the same example, and FIG. 3 is a plan view of the riding type tea leaf plucking machine using the riding type tea leaf plucking machine. It is the schematic diagram which showed the place which transpires the plucked tea leaf.

A riding-type tea leaf plucking machine to which the present invention is applied will be described.
As shown in FIGS. 1 to 3, the riding-type tea leaf plucking machine 10 includes a machine body 11 that plucks tea leaves while traveling over a teacup, and a container 12 as a container that holds the plucked tea leaves. Configured.

  As shown in FIGS. 2 and 3, the front frame 13, the center frame 14, and the rear frame 15 that are formed in a frontal portal type for traveling while straddling the teacup are parallel to the body 11 in the longitudinal direction of the body. It is prepared in the state. A pair of left and right upper connecting frames 16 extending in the longitudinal direction of the aircraft (however, only the right side of the aircraft is shown in FIGS. 2 and 3) are coupled and fixed to the left and right upper portions of the frames 13 to 15. While being integrated, a horizontal member and a plate-like floor member (not shown) are disposed between the opposing surfaces of the left and right upper connecting frames 16. These upper connecting frames 16 are set so as to be positioned above the height of the teacup.

  In addition, lower connection frames 17 extending in the longitudinal direction of the machine body are equally connected and fixed to the left and right sides of the machine body 11 at the lower ends of the frames 13 to 15. These lower connection frames 17 are provided with a hydraulic traveling device 21 in which a crawler 20 is wound between a driving wheel 18 and a driven wheel 19. The traveling device 21 is not limited to the one using the crawler 20, and may be one using a wheel, a rail type or the like, for example.

  On the floor upper surface of the front part of the aircraft body, a pilot seat 22, a pilot unit 23, and an engine unit 24 are arranged for an operator to sit down and operate the aircraft. In the engine unit 24, an engine (not shown) as a power source of the airframe 11 and a hydraulic pump (not shown) that is driven by the engine and supplies hydraulic pressure to each hydraulic actuator are integrally stored. Has been. A fuel tank 25 for supplying fuel to the engine is disposed in front of the engine unit 24, and a turbofan type belt driven by the engine is disposed obliquely behind the engine unit 24, that is, in the center of the fuselage. Two fans 26 are provided.

  The wind (airflow) generated by these blowers 26 is sent to the front side of the plucking device 28 via the extendable blowable duct 27 extending to the lower side of the machine body, and then ejected from the nozzle 29 to be plucked. The plucked tea leaves are blown backward, and the plucked tea leaves are fed into the tea leaf separation frame 31 on the container 12 through a pair of left and right transport ducts 30 extending to the upper rear part of the machine body 11 and then separated from the plucked tea leaves. Released into the atmosphere. On the other hand, the picked tea leaves separated from the air current by the tea leaf separation frame 31 fall into the container 12 and are accommodated. In addition, the upper part of the conveyance duct 30 can be attached or detached toward the up-down direction.

  The plucking device 28 is formed in a front view arc shape (or horizontal) in accordance with a tree shape that is made for plucking, and plucks tea leaves from teacups on the lower side of the plucking device 28. A hydraulic cutting blade (clipper blade) 32 is attached so as to be capable of reciprocating in the body width direction. Further, a priority valve (not shown) as a flow rate priority take-off valve is interposed in an oil passage connecting a hydraulic motor (not shown) for driving the cutting blade 32 and a hydraulic pump. This priority valve is a valve that can always give priority to taking out a constant hydraulic pressure (flow rate) regardless of the hydraulic pressure (pump flow rate) discharged by the hydraulic pump. The hydraulic pressure is always supplied to the hydraulic motor so that the corresponding driving speed of the cutting blade 32 can be obtained. For this reason, when the engine speed is increased, the airflow generated by the blower 26 is increased, but the driving speed of the cutting blade 32 is not increased, and the driving speed of the cutting blade 32 corresponding to the plucking operation is always maintained. It is like that.

  Furthermore, the plucking device 28 can be lifted and lowered together with the container 12 by a hydraulic container / plucking device lifting cylinder (hereinafter referred to as a lifting cylinder) 33.

  More specifically, the lower ends of a pair of left and right guide members 34 of the side view portal type are coupled and fixed to the upper surfaces of the upper connecting frames 16 on the left and right sides of the body, and the vertical front and rear legs 34A of the guide members 34 are fixed. , 34B are attached to a slider 35 as a pair of left and right lifting bodies extending in the longitudinal direction of the machine body through a plurality of rollers 36 so as to be lifted and lowered. At the front part of these sliders 35, an upper end part of a connecting member 37 connected to the plucking device 28 on the lower side of the machine body is attached and fixed. The rear portion of the slider 35 is extended so as to be positioned on the left and right sides of the container 12, and a pair of left and right vertical fixed frames 38 that support the container 12 are connected and fixed.

  The elevating cylinder 33 is a pair of left and right, suspended from the horizontal portion 34C of each guide member 34, and a sprocket 39 is rotatably provided at the lower end of the telescopic rod 33A of each elevating cylinder 33. Further, the sprocket 40 is also rotatably provided in the horizontal portion 34C of each guide member 34. One end portion of the chain 41 engaged with the sprockets 39 and 40 is fixedly attached to the horizontal portion 34C of the guide member 34. The chain 41 suspended from the horizontal portion 34C meshes with the lower sprocket 39 and changes its direction and then moves upward, and then meshes with the upper sprocket 40 and changes its direction again and moves downward. . The other end of the chain 41 suspended from the sprocket 40 is attached and fixed to the slider 35.

  When the telescopic rod 33A of the elevating cylinder 33 is extended, the sprocket 39 is lowered, and the chain 41 between the sprocket 40 and the slider 35 is moved upward by a length twice as long as the operating distance of the telescopic rod 34A. The slider 35, that is, the container 12 and the plucking device 28 are lifted up. Further, when the telescopic rod 33A of the elevating cylinder 33 is contracted, the sprocket 39 rises, and the chain 41 between the sprocket 40 and the slider 35 moves downward by a length twice as long as the operating distance of the telescopic rod 33A. And the slider 35 is lowered.

The plucking device 28 is positioned by positioning means (not shown). This positioning means includes, for example, a rotation sensor that detects the rotation speed and rotation direction of the sprocket 40, and a touch panel type input operation unit provided in the control unit 23 so that a desired cutting height can be input as a numerical value or memory. The rotation history information of the sprocket 40 is stored based on the detection value of the rotation sensor, and the plucking device 28 is positioned at the desired cutting height based on the rotation history information and the cutting height position information from the input operation unit. As described above, the control unit is configured to include a control unit that controls expansion and contraction of the telescopic rod 33A of the elevating cylinder 33. When the operator inputs a desired cutting height to the touch panel type input operation unit, an appropriate expansion / contraction operation amount of the expansion / contraction rod 33A of the elevating cylinder 33 is determined, and the plucking device 28 is positioned at the desired cutting height. .
The rotation sensor is not limited to the one that detects the rotation speed and the rotation direction of the sprocket 40. For example, a detection sensor that meshes with the chain 41 and detects the movement amount of the chain 41 can be used.

  Further, as shown in FIG. 3, an elongate elevating frame 42 extending in the vertical direction of the machine body is disposed inside each fixed frame 38 so as to be elevable along the fixed frame 38. The upper end of each elevating frame 42 is connected to the upper end of the telescopic rod 43A of a hydraulic container elevating cylinder 43 attached upside down on the front side of the fixed frame 38 via a connecting member 44. The lifting frame 42 is moved up and down in accordance with the expansion and contraction operation of the lifting cylinder 43.

  Further, as shown in FIGS. 2 and 3, the container 12 is rotated toward the rear side of the machine body so that it can be moved up and down in the longitudinal direction of the lifting frame 42 as shown in FIGS. A frame-like container support frame 45 that is movably supported is disposed.

  Between the lower part of the container support frame 45 and the upper part of the fixed frame 38, a container elevating chain 47 engaged with a sprocket 46 rotatably provided on the rear surface side of the elevating frame 42 is stretched. Therefore, when the telescopic rod 43A of the container lifting cylinder 43 is extended, the sprocket 46 rises together with the lifting frame 42, and the container lifting chain 47 between the sprocket 46 and the container support frame 45 operates the telescopic rod 43A. The container support frame 45, that is, the container 12 is raised by being pulled upward by the length twice the distance. In addition, when the telescopic rod 43A of the container lifting / lowering cylinder 43 is contracted, the container lifting / lowering chain 47 between the sprocket 46 and the container support frame 45 is retracted as the sprocket 46 moves down together with the lifting frame 42. The container support frame 45 is lowered by being drawn downward by the length double the operation distance of 43A.

  Further, the container support frame 45 is provided such that the container 12 is rotatable toward the rear side of the machine body via a rotation shaft portion 48 provided at the rear of the frame. A pair of left and right hydraulic shift cylinders 49 (shown in FIG. 3) and a link mechanism 50 for rotating the container 12 are provided between the container support frame 45, that is, between the machine body side and the container 12. .

  The link mechanism 50 is configured to include an arm member 51 and an arm member 52 whose end portions are swingably connected to each other, and the other end portion of the arm member 51 is swingably attached to the bottom portion of the container 12. In addition, the other end of the arm member 52 is swingably attached to an attachment flange 53 provided at the bottom of the container support frame 45. Further, an extendable rod 49A of a shift cylinder 49 attached to the bottom of the container support frame 45 so as to be swingable is attached to the middle portion of the arm member 51 so as to be swingable. (See FIG. 3).

  When the telescopic rod 49A of the shift cylinder 49 is contracted, that is, when the container 12 is not rotated, the arm members 51 and 52 are folded (see FIG. 2). Then, when the telescopic rod 49A of the shift cylinder 49 is extended, the arm member 51 rotates in the counterclockwise direction in FIG. 3 around the swinging fulcrum on the container side, and the arm member 52 moves on the container support frame side. The container 12 is rotated toward the rear side of the machine body by rotating in the clockwise direction in FIG. 3 around the swing fulcrum (see FIG. 3). The rotation of the container 12 is stopped immediately when, for example, a limit switch (not shown) detects that the container 12 has reached a preset inclination angle.

  The container 12 is composed of an aluminum frame around which a panel material with vent holes is stretched, and a rear surface portion thereof is a flip-up type discharge door 12A. The discharge door 12A is configured to open in conjunction with the container 12 turning toward the rear side of the machine body, and always biases the discharge door 12A in the opening direction. The gas spring 54 as a means, a plurality of sprockets 55 to 58 rotatably provided at the bottom of the container 12 and the top of the container support frame 45, and the container in a state of being alternately meshed with the plurality of sprockets 55 to 58 An open / close interlock mechanism 60 having a chain 59 stretched between the support frame 45 and the discharge door 12A is provided.

  According to this open / close interlock mechanism 60, one of the sprockets provided in the container 12, that is, the sprocket 57 on the front side of the machine body draws an arcuate rotation locus with the rotation of the container 12, while The discharge door 12A is opened by drawing it according to the urging force of the spring 54, and the discharge door 12A is closed by pulling the chain 59 against the urging force of the gas spring 54. The discharge door 12A is not limited to a flip-up type, and can be configured to be a retractable type or a sliding type such as a lifting shutter.

  Further, the hydraulic lifting and shifting cylinders 33, 43, 49 used in the riding type tea leaf plucking machine 10 are not particularly limited to the hydraulic type. For example, the pneumatic, ball screw mechanism, electric motor, etc. Can be used.

  When plucking work is performed using the passenger-type tea leaf plucking machine 10 configured in this way, first, the operator operates the machine that has entered the tea garden so as to straddle the teacup, and the desired operation is performed on the touch panel type input operation unit. When the cutting height to be input is input, an appropriate expansion / contraction operation amount of the expansion / contraction rod 33A of the elevating cylinder 33 is determined, and the plucking device 28 is positioned at a desired cutting height. Then, the operator operates the operation unit 23 to perform the plucking operation by the plucking device 28 while traveling along the teacup. Eventually, when detection means such as a weight sensor (not shown) detects that the container 12 is full of the picked tea leaves, the operator temporarily stops the picking operation and raises the picking device 28 so as not to touch the teacup. Move to headland.

  Upon reaching the headland, the operator operates the body 11 so that the container 12 at the rear of the body is positioned on one side (or the rear) of the loading platform T1 of the truck T as a transportation means, as shown in FIG. To do. When approaching the truck T to some extent, the airframe 11 is stopped and the telescopic rod 43A of the container elevating cylinder 43 is extended so that the bottom of the container supporting frame 45 is raised to a certain degree higher than the loading platform T1. Raise. When the container support frame 45 is raised, the operator slightly retracts the airframe 11 so that the rear end portion of the container 12, that is, the discharge door 12 is positioned on the inner upper side of the loading platform T1. When the positioning is completed, the extendable rod 49A of the shift cylinder 49 is extended.

  As the shift cylinder 49 operates the link mechanism 50, the container 12 starts to rotate toward the rear side of the machine body with the rotation shaft portion 48 as the rotation center, and at the front side of the machine body of the container 12. The provided sprocket 57 moves in conjunction with the rotation of the container 12 while drawing an arcuate rotation locus counterclockwise in FIG. Then, the sprocket 57 gradually opens the discharge door 12A by drawing the chain 59 in accordance with the urging force of the gas spring 54. As a result, as the inclination angle of the container 12 and the opening degree of the discharge door 12A increase, the discharge amount of the picked tea leaves discharged from the container 12 to the loading platform T1 of the truck T gradually increases. No load is imposed on the machine body, and the balance of the aircraft is not impaired. When the container 12 reaches a preset tilt angle, the transshipment of all the picked tea leaves in the container 12 to the loading platform T1 of the truck T is completed. When the transfer of the plucked tea leaves is completed, the operator operates the shift cylinder 49 so that the container 12 returns to the original position, closes the discharge door 12A, and returns the machine body 11 to the position where the plucking operation is interrupted. To resume plucking.

  As described above, according to the present invention, when the container 12 rotates toward the rear side of the machine body, the discharge door 12A is interlocked and the picked tea leaves accommodated in the container 12 are discharged therefrom. Thus, when the picked tea leaves accommodated in the container 12 are reloaded onto the loading platform T1 of the truck T, the container 12 is not slid toward the rear of the machine body. For example, the container 12 is full of picked tea leaves. However, the movement of the center of gravity of the airframe 11 is reduced, and the balance of the airframe can be stabilized. In addition, since the picked tea leaves are discharged from the container 12 that is rotated and inclined toward the rear side of the machine body, it is not necessary to provide a discharge device such as a conveyor at the bottom of the container 12, and can be configured at low cost.

  Further, according to the present invention, the sprocket 57 provided in the container 12 extends the chain 59 according to the urging force of the gas spring 54 as the container 12 rotates, or resists the urging force of the gas spring 54. By pulling the chain 59, the discharge door 12A is opened and closed. Thereby, since a hydraulic actuator or a parallel link mechanism is not used to open and close the discharge door 12A, the structure of the machine body can be greatly simplified. As a result, the weight of the machine can be reduced, the number of parts can be reduced, and the cost can be reduced.

  Further, according to the present invention, the container 12 is moved up and down to a position corresponding to the height of the loading platform T1 of the truck T. Thereby, the picked tea leaves in the container 12 can be transshipped according to the loading platform T1 of every truck T.

  The present invention can be applied not only to a riding type tea leaf plucking machine but also to, for example, a riding type tea garden management machine, a rail traveling type tea garden management machine, and the like.

It is a front view of the riding-type tea leaf plucking machine to which this invention was applied. It is a side view in the example. It is the schematic diagram which showed the place where the picked tea leaf is transshipped to the loading platform of a transport means from a container using this riding type tea leaf picking machine.

Explanation of symbols

10 Ride type tea leaf picking machine 11 Airframe 12 Container (container)
12A Discharge door 54 Gas spring (biasing means)
55-58 Sprocket 59 Chain 60 Open / Close interlock mechanism

Claims (4)

In a riding type tea leaf plucking machine comprising a machine body that plucks tea leaves while traveling over a teacup, and a container that contains the plucked tea leaves,
The riding tea leaf plucking machine, wherein the container is provided in the machine body so as to be rotatable toward the rear side of the machine body.   2. The container according to claim 1, wherein the container has a discharge door that opens in conjunction with the container rotating toward the rear side of the machine body and allows the tea leaves in the container to be discharged. The described riding tea leaf picking machine.   An opening / closing interlock mechanism that opens the discharge door in conjunction with the container rotating toward the rear side of the machine body includes an urging unit that constantly urges the discharge door in the opening direction, the machine body, and the housing. A plurality of sprockets provided on the body, and a chain stretched between the machine body and the discharge door in a state of being engaged with the sprockets provided on the machine body and the housing body, One of the sprockets provided on the door opens the discharge door by unwinding the chain according to the urging force of the urging means as the container rotates, and the chain is attached to the urging means. The riding type tea leaf plucking machine according to claim 2, wherein the discharge door is closed by pulling in against a force.   The riding-type tea leaf plucking machine according to claim 1, wherein the container is provided on the machine body so as to be movable up and down.

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