JP3996934B2 - Tea leaf picking machine - Google Patents

Description

  The present invention relates to a self-propelled tea leaf picking machine that travels across a teacup.

  Conventionally, this kind of tea leaf plucking machine is provided with a plucking device on the underside of the vehicle body that can travel across a teacup, plucking the tea leaves of the straddled teacup with the above plucking device, and transporting the plucked tea leaves to the transport duct To the container.

  Conventionally, as a plucking device of the tea leaf plucking machine, there is a plucking apparatus as shown in FIG. 9 (see Japanese Patent Application Laid-Open No. 2003-284418: Patent Document 1). FIG. 9 is a cross-sectional view showing the plucking device cut along a vertical plane parallel to the traveling direction of the tea leaf plucking machine. This plucking device has an opening on the front side in the traveling direction and the rear side is one end of the transport duct 101. A frame 102 connected to the frame 102, a rotary blade 104 accommodated in the frame 102, and a receiving blade 105 provided at the lower end edge of the opening of the frame 102. An air passage 107 extending in the width direction of the frame 102 and a first nozzle 108 connected to the air passage 107 are provided in the frame 102 and behind the receiving blade 105. A blower duct 110 extending in the width direction of the frame 102 is provided above the frame 102, and a second nozzle 111 branched from the blower duct 110 in a comb shape penetrates the top plate of the frame 102. Projecting into the transport duct 101.

  The plucking device cuts the tea leaf approaching the opening of the frame 102 with the rotary blade 104 and the receiving blade 105, pushes the cut tea leaf to the rear of the frame 102 with the rotary blade 104, and the first nozzle It is pumped into the transport duct 101 by the flow of air ejected by the nozzle 108. The tea leaves sent into the transport duct 101 are pumped toward the other end (not shown) of the transport duct 101 by the flow of air ejected by the second nozzle 111, and the tea leaves are fed to the container facing the other end of the transport duct 101. To collect.

However, the conventional tea leaf picking device has a problem in that the second nozzle 111 protrudes into the transport duct 101, so that the air flow from the first nozzle 108 is disturbed and the tea leaf is damaged. In addition, the second nozzle 111 protruding into the transport duct 101 has a problem that the tea leaves collide and are damaged. In addition, since the flow velocity of the air locally increases downstream of the comb-shaped second nozzle 111, there is a problem that the tea leaves are damaged by the air having a high local flow velocity. In addition, the tea leaves cut by the fixed blade 105 need to be sent to the position of the first nozzle 108 by the rotation of the rotary blade 104 in the tangential direction of the circle drawn by the tip of the rotary blade 104. There is a problem that the cut tea leaves may be sent together with the rotary blade 104 in the circumferential direction and discharged from the opening of the frame 102 to the outside of the plucking device. This problem becomes prominent when there are many mowed tea leaves and the inside of the frame 102 is crowded with tea leaves. Furthermore, tea leaves adhere to the first nozzle 108 protruding in a comb shape in the transport duct 101, and the tea leaf transport capability of the transport duct 101 may be reduced, leading to a reduction in tea leaf collection efficiency. The risk of a decrease in tea leaf collection efficiency becomes prominent when tea leaves are wet due to rain, fog, or the like.
JP 2003-284418 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a tea leaf picking machine that can prevent tea leaf damage and prevent a reduction in tea leaf collection efficiency.

In order to solve the above problems, the tea leaf plucking machine of the present invention is
A frame having a floor and legs,
A driver seat provided on the floor,
A rotating body that is located on the opposite side of the floor from the driver's seat and conveys tea leaves;
The rotating body covers a part of the rotating body and has a first opening for taking in tea leaves and a second opening for discharging tea leaves, and the second opening is closer to the floor than the rotation center of the rotating body. A casing located,
A transportation path connected to the second opening of the casing;
A blower outlet that is located on the floor side from the rotation center of the rotating body and blows air obliquely upward toward the transport path;
With
By blowing air from the outlet to the transport path, the tea leaves transported by the rotating body in the casing are sucked from the second opening and transported in the transport path.
Moreover, the tea leaf plucking machine of one Embodiment has the inclination board which the said blower outlet guides air diagonally upward.
Moreover, the tea leaf picking machine of one Embodiment has the diffuser formed in the downstream of the said blower outlet of the said transport path.
Moreover, the tea leaf plucking machine of one embodiment has a main body that can travel across the teacup ,
A sealed chamber provided on the lower side of the main body and provided with an opening, a taking-in portion for taking in tea leaves from the opening into the sealed chamber, and a cutting blade for cutting tea leaves taken into the sealed chamber by the taking-in portion A plucking device having a section;
An air blowing unit provided on the downstream side of the sealed chamber of the plucking device, blowing air from the sealed chamber toward the downstream side, and sucking tea leaves cut by the cutting blade unit from the sealed chamber;
It is connected to the sealed chamber of the plucking device, and includes a transport path that guides the air blown from the air blowing section and transports the tea leaves sucked from the sealed chamber.

  According to the said structure, the said main body travels across a teacup, The tea leaves planted in the said teacup are plucked by the plucking apparatus provided in the lower side of this main body. In the plucking device, the tea leaves approaching the opening of the sealed chamber are taken into the sealed chamber by the take-up unit and are cut by the cutting blade unit. Air is blown toward the downstream side from the air blowing portion provided on the downstream side of the sealed chamber of the plucking device, so that the sealed chamber of the plucking device has a lower pressure than the downstream side. Thereby, the cut tea leaves are sucked from the sealed chamber toward the transport path. The sucked tea leaves are transported in the transport path by the flow of air blown from the air blowing section. Thus, the suction of the tea leaves from the sealed chamber of the plucking device to the transport path and the transport of the tea leaves in the transport path are performed by the air blown from the air blowing section. Therefore, as compared with the conventional method, the tea leaves are pumped from the plucking device to the transport duct 101 by the air flow from the first nozzle 108, and further, the tea leaves are pumped in the transport duct 101 by the air flow from the second nozzle 111. It is possible to reduce the turbulence of the air flow and the increase in local flow velocity in the plucking device and the transportation path. As a result, it is possible to prevent the tea leaves from being damaged due to the turbulence of the air flow and the tea leaves from being directly damaged by the jet flow. Further, since the tea leaves cut by the cutting blade portion are sucked from the sealed chamber by the suction force into the transport path, the tea leaves are sent in the circumferential direction by the rotation of the rotary blade 104 and discharged from the opening of the frame 102 as in the conventional case. Can prevent inconvenience.

  The tea leaf plucking machine according to one embodiment is configured such that the air blowing portion is provided outside the inner side surface of the transport path, and through the through-hole opened in the inner side surface of the transport path, Communicate.

  According to the embodiment, the air blowing portion is provided outside the inner side surface of the transportation path, and air is blown into the transportation path from the through hole. Since there is no second nozzle 111 protruding into the duct 101, it is possible to prevent inconvenience that the cut tea leaves collide with the second nozzle 111 and are damaged. Moreover, the problem that the tea leaves adhere to the second nozzle 111 as in the conventional case can be prevented. Therefore, it is possible to prevent a reduction in the transport capacity of the sucked tea leaves and improve the collection efficiency of tea leaves.

  In the tea leaf picking machine of one embodiment, a diffuser is formed in the vicinity of the through hole of the transport path.

  According to the embodiment, the diffuser effectively reduces the air pressure in the sealed chamber of the plucking device with respect to the transport path. Therefore, tea leaves can be effectively sucked from the sealed chamber.

In one embodiment, the tea leaf plucking machine sucks tea leaves cut by the plucking device from the sealed chamber by blowing air toward the downstream side from an air blowing section provided on the downstream side of the sealed chamber of the plucking device. Since the sucked tea leaves are transported by the transport path through which the air from the air blowing section flows, the tea leaves are damaged by the turbulence of the air flow, the tea leaves are directly damaged by the jet stream, or the nozzle protrudes from the transport path. Tea leaves can be effectively prevented from being damaged by the collision of tea leaves.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

(First embodiment)
FIG. 1 is a side view showing a tea leaf picking machine according to a first embodiment of the present invention, and FIG. 2 is a front view of the tea leaf picking machine. In FIG. 1, a part of the frame is cut away.

  This tea leaf picking machine includes a gate-shaped frame 1 as viewed from the front, and a crawler device 2 driven by a hydraulic motor is attached to the lower end of a leg portion 1a of the frame. The crawler device 2 travels between the two sides of the teacup while the gate-shaped frame 1 is straddling the teacup.

  On the floor 1b of the frame, a driver's seat 21 on which an operator is seated, an operation handle 22 in which the operator moves the advancing direction of the tea leaf picking machine, an operation of the operation handle 22 by the operator, and other operations A control device 23 that controls the operation of the tea leaf picker according to the command and an engine 24 that drives a hydraulic pump and a generator are mounted. A canopy 25 is provided above the driver seat 21, the control device 23, the engine 24, and the like. The canopy 25 is hung on the upper end of a column erected on the floor 1b of the frame.

  A plucking device 4 for cutting the tea leaves is provided projecting downward from the floor 1b of the frame 1. The plucking device 4 is located in the approximate center between the front and rear legs 10 a of the frame 1 and extends in the width direction of the frame 1. Specifically, the plucking device 4 has a shape inclined downward as it goes from the center to the left and right sides when viewed from the front. The other end of a hydraulic cylinder (not shown) whose one end is fixed to the frame 1 is connected to both ends in the width direction of the plucking device 4, and the height of the plucking device 4 with respect to the ground can be adjusted by this hydraulic cylinder. Yes. The hydraulic cylinder is preferably driven so that the height of the plucking device 4 relative to the ground becomes a preset value based on a signal from a sensor that detects the height from the ground.

  On the rear side of the upper end surface of the plucking device 4, a transport hood 5 for discharging tea leaves plucked by the plucking device 4 is integrally formed. A transport duct 6 for transporting tea leaves is transported to the upper end of the transport hood 5. Are connected. The transport hood 5 and the transport duct 6 form the transport path of the present invention. On the other hand, on the rear side of the transport hood 5, a blower hood 8 is integrally formed as an air blowing section for sending wind into the transport hood 5. One end of a blower duct 9 is connected to the upper end of the blower hood 8, and a blower fan 10 is connected to the other end of the blower duct 9. The plucking device 4, the transport hood 5, and the blower hood 8 that are integrally formed can be attached to and detached from the transport duct 6 and the blower duct 9 by a fastener 11. The detachable plucking device 4, the transport hood 5, and the blower hood 8 are supported by a support frame 12 formed of a pipe material. The other end of the hydraulic cylinder is connected to the support frame, and the support frame moves vertically along the guide as the hydraulic cylinder extends. The plucking device 4, the transport hood 5, the transport duct 6, the blower hood 8, the blower duct 9 and the blower fan 10 constitute a plucking and collecting unit. Among the plucking and collecting units, a total of two transport hoods 5, transport ducts 6, blower hoods 8, blower ducts 9 and blower fans 10 are provided on the left and right sides in the width direction of the tea leaf picking machine. The transport duct 6 and the air duct 9 are separated into two at substantially the center in the height direction, and the lower portion can slide telescopically with respect to the upper portion. The plucking device 4, the transport hood 5 and the blower hood 8, and the lower side of the transport duct 6 and the blower duct 9 are connected to a support cylinder that supports the plucking device 4, the transport hood 5 and the blower hood 8. The part is movable in the vertical direction. The plucking device 4 is preferably adjustable to a height between about 450 mm and 1000 mm from the ground according to the height of the tea leaves of the teacup.

  FIG. 3 is a front view of the tea leaf plucking machine, with the plucking and collecting unit superimposed thereon. In FIG. 3, for the sake of easy understanding, the right plucking and collecting unit is shown with the transport hood 5 and the transport duct 6 omitted.

  FIG. 4 is a cross-sectional view showing a state in which the plucking device 4, the transport hood 5 and the blower hood 8 are cut along a vertical plane parallel to the traveling direction of the tea leaf plucking machine. As shown in FIG. 3, the plucking device 4 has an opening on the front side, and a casing 4a as a sealed chamber in which a portion other than the opening is formed airtight, and a rotary blade 4b accommodated in the casing 4a. And a fixed blade 4c provided at the lower end edge of the opening of the casing 4a. The casing 4a has a rectangular cross-sectional shape with rounded corners, and has a shape inclined downward from the center toward the left and right sides when viewed from the front, and the left and right side portions are integrally formed. Yes. The rotary blade 4b includes a rotary shaft disposed substantially parallel to the axis of the casing 4a, and a spiral blade fixed to the rotary shaft. Two sets of the rotary blades 4b are provided on the left and right sides of the casing 4a, and the shafts of the two sets of rotary blades 4b are connected to each other by a universal joint. The two sets of rotary blades 4b in the left part of the casing 4a are driven by a hydraulic motor (not shown) provided at the left end of the left part of the casing 4a. The two sets of rotary blades 4b in the right part of the casing 4a are driven by a hydraulic motor (not shown) provided at the right end of the right part of the casing 4a. The rotary blade 4b rotates clockwise as indicated by an arrow R in FIG. 4 so that the blade of the rotary blade 4b is directed from the upper edge of the opening to the lower edge when the tea leaf is picked by the picking device 4. . The fixed blade 4c is formed in a circular arc shape having a radius of curvature of about 3 m and a concave portion on the front side. The rotary blade 4b corresponds to the take-in portion, and the blade of the rotary blade 4b and the fixed blade 4c correspond to the cutting blade portion.

  The transport hood 5 formed integrally with the plucking device 4 is formed substantially in a straight line with the front side surface inclined forward in the traveling direction from the lower end toward the upper end and the rear side surface of the casing 4a of the plucking device. And a rear side surface extending in the direction. The transport hood 5 has a left side surface and a right side surface that are inclined inward in the width direction from the lower end toward the upper end. With such a form of the side surface, the transport hood 5 constitutes a diffuser whose cross-sectional area increases from the lower end toward the upper end.

  An inclined plate 4d, the tip of which is inclined forward and downward in the casing 4a, protrudes from a connection portion between the front side surface of the transport hood 5 and the top plate of the casing 4a of the plucking device.

  The blower hood 8 integrally formed on the rear side of the transport hood 5 has an upper part connected to the lower end of the blower duct 9 and a lower part connected to the transport hood 5. The upper portion of the blower hood 8 has a front side surface and a rear side surface that extend in a substantially vertical direction, and a left side surface and a right side surface that are inclined inward in the width direction from the lower end toward the upper end. On the other hand, the lower part of the blower hood 8 is connected to the rear side surface extending substantially parallel to the rear side surface of the transport hood 5 and the front end from both end edges in the width direction of the rear side surface. A left side and a right side connected to the rear side; The bottom of the lower portion of the blower hood 8 is a curved surface that is curved in the cross section in the front-rear direction. A through hole 13 is provided on the rear side of the transport hood 5 and in the vicinity of the lower end of the portion covered with the lower portion of the blower hood 8, and the blower hood 8 is provided through the through hole 13. And the transport hood 5 communicate with each other. A blower hood side inclined plate 14 whose tip is inclined backward and downward in the blower hood 8 is provided at the upper end edge of the opening of the through hole 13 on the blower hood 8 side. A transport hood-side inclined plate 15 whose tip is inclined forward and upward in the transport hood 5 is provided at the lower end edge of the through-hole 13 on the transport hood 5 side. The through hole 13 has an elongated rectangular shape extending in the width direction of the transport hood 5 when viewed from the front.

  The transport duct 6 connected to the transport hood 5 has a vertical portion 6a extending vertically upward from the lower end connected to the transport hood 5 to a height slightly lower than the canopy 25, and the vertical portion 6a. A horizontal portion 6b that is bent substantially at a right angle and extends rearward, and an open end portion 6c that is bent downward at a substantially right angle with respect to the horizontal portion 6b and has an open end. The vertical part 6a of the transport duct is divided into two at the approximate center in the height direction, and the lower end part of the lower part of the vertical part 6a has a slightly smaller cross-sectional dimension than the upper end part of the upper part. . Thus, when the transport duct 6 is driven in a telescopic manner, the lower end portion of the lower portion of the vertical portion 6a is formed so as to be immersed inside the upper end portion of the upper portion. A container 27 for storing tea leaves transported by the transport duct 6 is provided below the opening end 6c of the transport duct. The container includes a substantially cylindrical frame body 27a that can rotate around an axis extending in the vertical direction, and an air-permeable bag body 27b supported in the frame body 27a.

  The vertical portion 6a of the transport duct has a flat rectangular cross section whose width is large with respect to the depth in the front-rear direction. The horizontal portion 6b of the transport duct has a rectangular cross section in which the width of the cross section gradually decreases toward the rear. The opening end 6c has a rectangular cross section.

  The blower duct 9 connected to the blower hood 8 extends from the lower end connected to the blower hood 8 vertically upward to a height near the upper end of the container 27, and is connected to the vertical part 9a. The bifurcated portion 9b has a bifurcated branch portion 9b on both the left and right sides in the width direction, and a hose portion 9c that is continuous with the bifurcated bifurcated tip portion. The vertical portion 9a of the air duct is divided into two at the approximate center in the height direction, and the upper end portion of the upper portion of the vertical portion 9a has a slightly smaller cross-sectional dimension than the lower end portion of the lower portion. . Thereby, when the said air duct 9 is driven in a telescopic shape, the upper end part of the upper part of the vertical part 9a is formed so that it may immerse inside the lower end part of a lower part. The front ends of the hose portions 9c of the air duct are connected to the two air outlets 10c of the air blowing fan 10, respectively.

  The vertical portion 9a of the air duct has a flat rectangular cross section whose width is large with respect to the depth in the front-rear direction. The branch portion 9b of the air duct has a lower end having the same cross section as the vertical portion 9a, and two branched tip portions each have a circular cross section. The hose portion 9c of the air duct has a circular cross section. A horizontal portion 6b of the transport duct extends between the two hose portions 9c.

  The blower fan 10 is a centrifugal fan having a casing 10a having two spiral portions when viewed from the front side, and an impeller that is provided in the casing 10a and rotates about an axis extending in the front-rear direction. The blower fan 10 sucks air from a circular suction port 10b provided in the center portion of the front surface of the casing 10a, and is provided on the front surface of the casing 10a on two radial sides of the suction port 10b. Wind is blown out from the air outlet 10c. Note that there may be one blower outlet 10c of the blower fan. In this case, the branch portion 9b of the air duct is unnecessary, and one hose portion 9c may be connected to the vertical portion 9a of the air duct, and this one hose portion 9c may be connected to the one outlet 10c.

  The tea leaf plucking machine having the above configuration operates as follows.

  The tea leaf plucking machine enters the tea plantation so that the operator sitting on the driver's seat 21 operates the operation handle 22 and the crawler device 2 travels between the furrows. With the frame 1 straddling the teacup, the vertical position of the plucking device 4 is adjusted and held in an appropriate position according to the height of the tea leaves planted in the teacup and the cutting length of the tea leaves. Is done. And while the operation of the said plucking apparatus 4 and the ventilation fan 10 is started, the driving | running | working of the furrow by the crawler apparatus 2 is started.

As the tea leaf plucking machine moves forward, the tea leaf that has approached the opening of the plucking device 4 is taken into the casing 4a by the blade of the rotary blade 4b that rotates from the upper edge of the opening toward the lower edge. Here, the said opening which takes in a tea leaf in the casing 4a is defined as a 1st opening. The tea leaves taken into the casing 4a are sandwiched between the blade of the rotary blade 4b and the fixed blade 4c, cut and trimmed.

On the other hand, by the operation of the blower fan 10, the wind blown from the blower outlet 10c of the blower fan is sent to the blower hood 8 through the hose part 9c, the branch part 9b and the vertical part 9a of the blower duct. The wind sent to the blower hood 8 is directed upward by the bottom portion having a curved curved surface, and is rectified by the blower hood side inclined plate 14 and the transport hood side inclined plate 15, and the through hole 13. Through the transport hood 5 at a high speed. Here, the through hole 13 that blows air obliquely upward toward the transportation path formed by the transportation hood 5 and the transportation duct 6 is an air outlet. The transport hood 5 is formed in a diffuser whose cross-sectional area increases as it moves away from the connection portion with the casing 4a, and is transported from the casing 4a by an inclined plate 4d provided at the connection portion between the casing 4a and the transport hood 5. By restricting the air flow toward the hood 5, the pressure in the casing 4 a is effectively lower than that in the transport hood 5. Thereby, the tea leaves cut in the casing 4 a are effectively sucked into the transport hood 5. Here, the tea leaves are discharged to the transport hood 5 outside the casing 4a from the opening between the transport hood side inclined plate 15 and the upper left end of the casing 4a. An opening through which the tea leaves are discharged from the casing 4a is defined as a second opening. Further, the transport path is connected to the second opening. The sucked tea leaves are sent from the transport hood 5 to the transport duct 6 by the wind blown from the through-hole 13 and are pumped through the transport duct 6.

  In this way, the suction of tea leaves from the casing 4a is performed only by the air flow supplied into the transport hood 5 from the blower hood 8 provided outside the inner side surface of the transport hood 5 through one through hole 13. Since the tea leaves are transported in the transport hood 5 and the transport duct 6, the tea leaves can be effectively prevented from being damaged. That is, as in the prior art of FIG. 9, turbulent flow is generated in the air flow from the first nozzle 108 and the tea leaf is damaged, or the tea leaf is damaged by receiving the jet of air from the first nozzle 108 directly. Can be prevented. In addition, it is possible to effectively prevent the tea leaf from colliding with the second nozzle 111 protruding into the transport duct 101 and damaging the tea leaf. Furthermore, it is possible to effectively prevent the disadvantage that the tea leaf adheres to the second nozzle 111 protruding into the transport duct 101 as in the prior art and the tea leaf transport capacity is lowered.

  The tea leaves pumped through the transport duct 6 are discharged from the open end 6 c through the vertical portion 6 a and the horizontal portion 6 b of the transport duct 6 and are accommodated in the container 27.

The plucking device 4 accommodates the rotary blade 4b in the casing 4a, is provided with a fixed blade 4c at the lower end edge of the opening of the casing 4a, and takes the tea leaves into the casing 4a by the rotation of the rotary blade 4b. The tea leaves are cut by the blade 4b and the fixed blade 4c, but another plucking device 4 can be used. Specifically, as shown in the front view of the plucking and collecting unit in FIG. 5A and the side view of the plucking and collecting unit in FIG. 5B, the spiral brush is driven to rotate around the axis extending in the width direction in the casing 4a. And a clipper blade 4f extending in the width direction is provided at the lower end edge of the opening of the casing 4a. Here, the rotary blade 4b or the rotary brush 4e is defined as a rotating body. The tea leaves may be taken in from the opening of the casing 4a by the rotation of the rotating brush 4e, and the tea leaves may be cut by the clipper blade 4f. Further, the plucking device 4 may be provided with, for example, a shallow pruner other than the clipper blade 4f. In short, the plucking device 4 includes a casing 4a, a transport hood 5 and a blower hood 8 similar to those of the present embodiment, What is necessary is just to suck the tea leaves and tea branches that have been cut off from the casing 4a into the transport hood 5 by the air flow blown into the transport hood 5 from the hood 8.

(Second Embodiment)
FIG. 6A is a front view showing a plucking and collecting unit provided in a tea leaf plucking machine according to a second embodiment of the present invention, and FIG. 6B is a side view of the plucking and collecting unit. In FIG. 6A, the plucking and collecting unit on the right side does not show the transport hood 5 and the transport duct 6 for easy understanding.

  In the present embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The tea leaf picking machine of the present embodiment is different from the tea leaf picking machine of the first embodiment in the shape of the picking and collecting unit. Specifically, as shown in FIGS. 6A and 6B, the transport hood 35 connected to the upper portion of the casing 4a of the plucking device has a width that decreases from the lower end to the upper end when viewed from the front, and the lower end to the upper end when viewed from the side. It has a shape whose depth increases as it goes to. The transport hood 35 is formed by a lower part 35a formed integrally with the casing 4a of the plucking device, and an upper part 35b detachably connected to the upper end of the lower part 35a by a fastener. A blower hood 38 is integrally formed on the rear side of the upper portion 35b of the transport hood, and a through hole 33 through which air blows out from the blower hood 38 is formed on the rear side surface of the upper portion 35b of the transport hood.

  The blower hood 38 has a substantially cylindrical shape, and the bottom of the lower end connected to the upper portion 35b of the transport hood has a hemispherical shape. The through hole 33 formed in the connecting portion between the blower hood 38 and the upper portion 35b of the transport hood has a substantially circular shape. A cylindrical vertical portion 39a and a hose portion 39b are sequentially connected to the upper end of the blower hood 38. A blowing duct 39 is formed by the vertical portion 39a and the hose portion 39b. The vertical portion 39a of the air duct is separated into two at the center in the height direction, and the upper end portion of the upper portion of the vertical portion 39a has a slightly smaller cross-sectional dimension than the lower end portion of the lower portion. . Thereby, when the said air duct 39 is driven in a telescopic shape, the upper end part of the upper part of the vertical part 39a is formed so that it may immerse inside the lower end part of a lower part. The tip of the hose portion 39b of the air duct is connected to the air outlet 40c of the air blowing fan 40. The blower fan 40 is a centrifugal fan having a casing 40a having a spiral shape when viewed from the front and an impeller provided in the casing 40a, and the casing 40a is provided with one outlet 40c. Yes.

  The transport duct 36 connected to the upper portion 35b of the transport hood has a substantially circular cross section, a vertical portion 36a that extends vertically upward, and a horizontal portion 36b that is bent substantially perpendicular to the vertical portion 36a and extends rearward. And an open end portion 36c which is bent obliquely rearward with respect to the horizontal portion 36b and has an open end. The vertical portion 36a of the transport duct is divided into two at the approximate center in the height direction, and the lower end portion of the lower portion of the vertical portion 36a has a slightly smaller cross-sectional dimension than the upper end portion of the upper portion. . Thus, when the transport duct 6 is driven in a telescopic manner, the lower end portion of the lower portion of the vertical portion 36a is formed so as to be immersed inside the upper end portion of the upper portion.

  Since the transport duct 36 and the air duct 39 are formed with a width smaller than that of the first embodiment, the rear view from the operator seated on the driver's seat 21 can be improved.

  In the present embodiment, the vertical portion 39a of the transport duct is formed in a cylindrical shape, but a cross section near the lower end connected to the transport hood 35 is formed small, and the cross-sectional area gradually increases from the position of the small cross section toward the vertical upper side. A larger diffuser may be provided.

(Third embodiment)
FIG. 7 is a side view of a tea leaf plucking machine according to a third embodiment of the present invention, and FIG. 8 is a rear view of the tea leaf plucking machine.

  In the present embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The tea leaf picking machine of the present embodiment removes the container 27 from the tea leaf picking machine of the first embodiment and attaches two discharge hoses 45 to the ends of the opening end portions 6c of the two transport ducts. The discharge hose 45 extends from the front end of the opening end 6c through the vicinity of the rear end of the floor 1b of the frame so that the front end is located behind the crawler device 2. As a result, the tea leaves of the tea tree 42 are cut by the plucking device 4, and the cut tea leaves are discharged into the furrow via the transport duct 6 and the discharge hose 45 so that the cutting work of the tea tree 42 can be performed efficiently. .

It is a side view of the tea leaf picking machine of 1st Embodiment. It is a front view of the tea leaf picking machine of 1st Embodiment. It is the figure which piled up and showed the plucking collection unit on the front view of a tea leaf plucking machine. It is sectional drawing of a plucking apparatus, a transport hood, and a ventilation hood. It is a front view of a plucking and collecting unit. It is a side view of a plucking and collecting unit. It is a front view of the plucking collection unit with which the tea leaf plucking machine of 2nd Embodiment is provided. It is a side view of the plucking collection unit with which the tea leaf plucking machine of 2nd Embodiment is provided. It is a side view of the tea leaf picking machine of 3rd Embodiment. It is a rear view of the tea leaf picking machine of 3rd Embodiment. It is sectional drawing which shows the plucking apparatus with which the conventional tea leaf plucking machine is provided.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 1a Frame leg 1b Frame floor 2 Crawler device 4 Picking device 4a Picking device casing 4b Picking device rotary blade 4c Picking device fixed blade 4d Picking device inclined plate 5 Transport hood 6 Transport duct 6a Transport duct Vertical part 6b Horizontal part of transport duct 6c Open end of transport duct 8 Blow hood 9 Blower duct 9a Vertical part of blower duct 9b Branch part of blower duct 9c Hose part of blower duct 10 Blower fan 13 Through hole 21 Driver's seat 22 Operation handle 23 Control device 24 Engine 25 Canopy

Claims (3)

A frame having a floor and legs,
A driver seat provided on the floor,
A rotating body that is located on the opposite side of the floor from the driver's seat and conveys tea leaves;
The rotating body covers a part of the rotating body and has a first opening for taking in tea leaves and a second opening for discharging tea leaves, and the second opening is closer to the floor than the rotation center of the rotating body. A casing located,
A transportation path connected to the second opening of the casing;
An air outlet that is located on the floor side of the rotation center of the rotating body and blows air obliquely upward toward the transport path;
With
Tea leaf picking , wherein air is blown out from the outlet into the transport path, and the tea leaves conveyed by the rotating body in the casing are sucked from the second opening and transported in the transport path. Machine. In the tea leaf picking machine according to claim 1,
The air outlet, tea Hatsumi adopt machine, characterized in Rukoto which have a inclined plate for guiding the air obliquely upward. In the tea leaf plucking machine according to claim 1 or 2 ,
A tea leaf plucking machine, characterized in that a diffuser is formed downstream of the air outlet of the transport path.

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