JPH08116756A - Tracked tea plucking machine - Google Patents

Abstract

PURPOSE: To provide a tracked tea plucking machine enabling the plucking work by running on rails laid in the furrows at both sides of a tea tree row even if the distance between the right and left rails is remarkably fluctuated. CONSTITUTION: A planer-type frame 4 of a tracked carriage 3 is composed of the right and left vertical frames 4e, 4e (4f, 4f) having independently adjustable lengths and lateral frames 4g, 4h (4i, 4j) extended on the vertical frames and automatically stretchable or contractible with a lateral frame expanding and contracting motor 20. The bag placing table 39 of a tea plucking apparatus 5 is connected to right and left liftable frames 27 vertically driven along the above vertical frame through extensible right and left supporting members 50 extending or contracting parallel to the lateral frame with a supporting member extending motor 51. The tea leaf plucking apparatus 5 is held at the center of the right and left vertical frames by cooperatively controlling the motor 20 for extending or contracting the lateral frame and the extensible right and left supporting members 50 and the motor 51 for extending or contracting the supporting member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an orbit type tea leaf plucking machine for continuously performing tea leaf plucking work on each tea tree ridge while traveling on left and right rails laid between the ridges in a tea plantation.

[0002]

2. Description of the Related Art As an orbital type tea leaf plucking machine, a track truck that has a gate-shaped frame that straddles tea tree ridges and can run on the left and right rails laid between the ridges on both sides of each tea tree ridge, and the above gates. It has been generally known that a tea leaf plucking device that is vertically movable along the left and right vertical frames of a mold frame is provided (Japanese Patent Laid-Open No. 1-174301).
Japanese Patent Laid-Open Publication No. 4-91716), and the applicant of the present invention has also proposed a orbital type tea leaf plucking machine of this type (see Japanese Laid-Open Patent Publication No. 4-320613).

Here, the mutual interval between the ridges of each tea plantation in the tea plantation is determined at the time of planting, and generally tends to be narrow in a narrow tea plantation and wide in a wide tea plantation. For this reason, the mutual distance between the rails laid in the center of each ridge is not constant, and depending on the tea plantation, it may range from 150 cm to 200 c.
It varies in the range of m.

Therefore, in the conventional track type tea leaf plucking machine, the center distance between the left and right wheels of the track carriage is set to 180 cm, which is the average rail distance, and the wheels on one side are widened. This makes it possible to handle rail intervals of 180 ± 5 cm.

[0005]

As described above, the distance between the rails laid in the tea plantation is 150 cm to 200 c.
Despite the variation in the range of m, the conventional track type tea leaf plucking machine can handle only a rail interval of 180 ± 5 cm, and thus there is a problem that usable tea gardens are limited.

[0006] However, by changing the design of the left and right wheel spacing of the track car, for example, 170 ± 5 cm, 160 ± 5 cm,
By adding three models that can accommodate a rail spacing of 190 ± 5 cm, it is possible to deal with variations in the rail spacing in the range of 155 cm to 195 cm, but in this case, there is a problem that the number of models increases unnecessarily and the manufacturing cost increases. Occurs.

Further, in the conventional orbital type tea leaf plucking machine, when the tea plantation is on a sloping ground and there is a difference in height between the left and right rails laid between the ridges on both sides of the tea tree ridge, a rail-type carriage and a gate-shaped frame are provided. There was also a problem in work safety such as tilting to the valley side, the center of gravity of the whole moved to the valley side, and the attitude of the orbital type tea leaf plucking machine became unstable.

[0008] Therefore, an object of the present invention is to provide an orbital type tea leaf plucking machine capable of running on the rails and working even if there is a large variation in the distance between the left and right rails laid between the ridges on both sides of the tea tree ridge. In addition, it is also an object to provide an orbital type tea leaf plucking machine that can safely work in a stable posture even on a sloping ground.

For this purpose, the present invention has a rail-shaped carriage having a gate-shaped frame straddling the tea tree ridges and traveling on left and right rails laid between the ridges on both sides of the tea tree ridges, and a left and right rail car of the gate frame. In an orbital type tea leaf plucking machine equipped with a tea leaf plucking device that can be lifted and lowered along a vertical frame, the portal frame is a motor that automatically drives a horizontal frame that is horizontally installed above the left and right vertical frames. The tea leaf plucking device is configured to be expandable and contractible, and the tea leaf plucking device is provided with left and right expansion and contraction support members that expand and contract in parallel with the horizontal frame by a motor drive with respect to the left and right elevating frames that are vertically moved along the left and right vertical frames. The motors that connect and support the horizontal frame and the left and right expansion and contraction support members by expanding and contracting are such that the tea leaf plucking device is always located in the center between the left and right vertical frames. And a first means to cooperatively controlled by the control means.

According to a second aspect of the present invention, the left and right vertical frames of the gate frame are individually configured to be adjustable for expansion and contraction.
Is used as a means.

In the orbital type tea leaf plucking machine according to the present invention which adopts the first means, a motor for automatically expanding and contracting the horizontal frame of the gate-shaped frame and a left and right driven vertically moving along the left and right vertical frames of the gate-shaped frame. The gate-type frame is provided with the tea leaf plucking device in the right and left vertical directions by coordinated control of the motors that extend and retract the left and right expandable support members that connect and support the tea leaf plucking device to the elevating frame. The mutual distance between the left and right vertical frames is continuously adjusted in the state of being located in the central portion between the frames, and accordingly, the left and right distance between the wheels of the track truck is continuously adjusted.

Further, in the track type tea leaf plucking machine according to the present invention which adopts the second means, when the tea plantation is on a slope and there is a difference in height between the left and right rails laid between the ridges on both sides of the tea ridge, the gate is The left and right vertical frames of the mold frame are longer on the valley side,
The gate-shaped frame is held in a substantially vertical posture by adjusting the mountain side to be shortly stretchable and adjusting the mutual interval according to the plane projection interval of the left and right rails.

An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. An orbital type tea leaf plucking machine of one embodiment whose overall structure is shown in FIGS. 1 and 2 is made of a circular pipe laid at a predetermined ground clearance via rail struts 1 between ridges on both sides of each tea tree ridge of a tea plantation. A tea leaf plucking device 5 is vertically movable along a gate-shaped frame 4 of a rail truck 3 traveling on the left and right rails 2, 2. The rail truck 3 has front and rear ends of left and right truck side frames 6, 6. A front wheel 7 is rotatably supported via a front wheel support base 8, and a rear wheel 9 is rotatably supported at a rear end thereof via a rear wheel support base 10.

The front wheel support base 8 is fixed to the front end surface of the truck side frame 6 with two bolts, one upper and the other lower. The bolt insertion hole for inserting the upper fixing bolt is centered on the lower bolt. The arc-shaped long hole allows it to be tilted right and left around the lower bolt by an arbitrary angle to be fixed. The rear wheel support base 10 can also be fixed by tilting left and right at an arbitrary angle by the same fixing structure.

Here, the left and right front wheels 7 and the rear wheels 9 rolling on the left and right rails 2, 2 have U-shaped grooves, which are rolling surfaces, on both sides that also serve as collars for preventing wheel removal. However, in order to be able to cope with a slight gap between the left and right rails 2, 2, in this embodiment, the front wheel 7 on one side (for example, the left side) has a wide U-shaped groove, and It is possible to move relative to 2 in the left-right direction by about 5 cm each. Corresponding to this, the rear wheel 9 on one side (left side) is shown in FIG.
As shown in the enlarged view of FIG.
a and 10a are slidably fitted in a longitudinal direction of a drive shaft 11 which is rotatably mounted horizontally. The rear wheels 9 are arranged on both sides of the drive shaft 11 and are mounted on the drive shaft 11 so as to be left and right. The coil springs 12 and 12 are floatingly supported on the central portion of the drive shaft 11 in the longitudinal direction.
It is possible to move about 5 cm to the left and right against 2 and 12.

The left and right rear wheels 9 are rear wheel support bases 10.
The drive sprocket 1 for the reduction gear box 14 and the chain transmission mechanism 15 is driven by the rear wheel drive motor 13 installed above.
5A, a chain 15b, and a driven sprocket 15c rotate together with the drive shaft 11, which is rotated by the rear wheel drive motor 13 so that the orbital type tea leaf plucking machine moves forward at a predetermined low speed. Plucking work is performed, and after the work is completed, the vehicle runs backward at high speed.

At the front end of the front wheel support base 8,
A limit switch 16 is installed which operates at the forward end of the orbital type tea leaf plucking machine to stop the rotation of the rear wheel drive motor 13, and near the rear part of the truck side frame 6 at the backward end of the orbital type tea leaf plucking machine. A two-step actuation type limit switch 17 is installed that is activated to temporarily reduce the rotation of the rear wheel drive motor 13 and then stops the rotation.

The gate type frame 4 is a welded structure of square pipes, and includes a front department type frame 4c and a rear department type frame which are connected to each other by front and rear upper side frames 4a, 4a and lower side frames 4b, 4b. 4d and. Here, as shown enlarged in FIG. 4, the lower end portions of the left and right vertical frames 4e, 4e of the front department type frame 4c are
The left and right bogie side frames 6 and 6 are respectively fitted onto the front connecting columns 6a and 6a which are erected on the front end portions thereof,
By inserting the connecting pin 19 into one of the upper and lower pin holes 18 formed in the front connecting support column 6a, the connecting pin 19 is connected so as to be adjustable in expansion and contraction in the vertical direction. Similarly, the lower end portions of the left and right vertical frames 4f, 4f of the rear department type frame 4d are externally fitted to the rear connecting columns 6b, 6b which are erected on the rear end portions of the left and right bogie side frames 6, 6, respectively. A connecting pin 19 is inserted into one of the pin holes 18 so that it can be expanded and contracted in the vertical direction.

Here, the horizontal frame horizontally extended between the upper end portions of the left and right vertical frames 4e, 4e of the front department type frame 4c is a partial horizontal portion which is elastically fitted in its length direction (left-right width direction). The horizontal frame, which is composed of the frames 4g and 4h and is similarly stretched horizontally between the upper ends of the left and right vertical frames 4f and 4f of the rear-section type frame 4d, can be expanded and contracted in the length direction (left and right width direction) thereof. Partial horizontal frames 4i, 4
j.

In the horizontal frame of the front department type frame 4c, a reduction gear box 2 in which a horizontal frame expansion / contraction motor 20 is integrally connected to the upper surface of one partial horizontal frame 4g.
1 and the bearing case 22 are fixed, and the nut 23 is fixed to the upper surface of the other partial horizontal frame 4h.
A screw shaft 24 is screwed onto the nut 23, and a base end portion 24a thereof is rotatably supported by the bearing case 22 (see FIG. 5). The proximal end portion 24a of the screw shaft 24 is connected to the output shaft 21a of the reduction gear box 21 via the joint 25, so that the screw shaft 24 is rotationally driven by the horizontal frame expansion / contraction motor 20 via the reduction gear box 21. The partial horizontal frames 4g and 4h automatically expand and contract with each other by the movement of the nut 23 as the screw shaft 24 rotates.

Similarly, also in the horizontal frame of the rear department type frame 4d, the reduction gear box 21 and the bearing case 22 are fixed to the upper surface of one partial horizontal frame 4i, and the upper surface of the other partial horizontal frame 4j. Is nut 2
3 is fixed, a screw shaft 24 is screwed into this nut 23, and the base end portion 24a thereof is the bearing case 2
It is rotatably supported by 2. The base end portion 24a of the screw shaft 24 is connected to the output shaft 21a of the reduction gear box 21 via a joint 25.

Here, the reduction gear box 21 on the partial horizontal frame 4i and the reduction gear box 21 on the partial horizontal frame 4g are mutually connected via an interlocking shaft 26 having universal joints 26a, 26a at both ends. Is connected to the output shaft 21 of both reduction gear boxes 21 and 21 by rotation of the horizontal frame expansion / contraction motor 20.
a and 21a are rotationally driven at the same speed. And the reduction gearbox 2 on the partial horizontal frame 4i
When the output shaft 21a of No. 1 is rotationally driven, the screw shaft 24 rotates, the nut 23 on the partial horizontal frame 4j moves, and the partial horizontal frames 4i and 4j automatically expand and contract with each other. Is the partial horizontal frame 4g,
It is performed in synchronization with the automatic expansion and contraction of 4h.

On the other hand, as also shown in FIG. 6, a pair of left and right elevating frames 27, 27 (only one of which is shown) extending in the front-rear direction are arranged on both left and right sides of the gate frame 4. The elevating frame 27 is attached to the outer surface of the vertical frame 4e of the front department type frame 4c and has a rectangular cross-section guide pipe 28 extending in the vertical direction and the rear department type frame 4d.
Which is driven up and down by being guided by the vertical frame 4f of
At its front end, four rolling wheels 29, which are vertically and vertically arranged to sandwich the guide pipe 28 from the front-rear direction, are rotatably supported via left and right support plates 30, 30, and at the rear end thereof. Four rolling wheels 31, which are arranged vertically and vertically and sandwich the vertical frame 4f of the rear department type frame 4d from the front and rear direction, are rotatably supported via a support plate 32. The lifting frame 27 on the opposite side (not shown) has the same structure.

Here, in the left and right vertical frames 4e, 4e of the front department type frame 4c, a screw shaft 33 for lifting and lowering is provided.
(One is not shown) is rotatably supported and inserted, and the nut 34 screwed to the screw shaft 33 is
Slit holes 3 opened on the outer surface of the vertical frame 4e
The inner support plate 3 via a connecting screw 36 penetrating 5
0s are connected. The screw shaft 33 is rotatably driven by an elevating motor 37 with a speed reduction mechanism attached to the upper portion of the vertical frame 4e. The screw shafts on the opposite side (not shown) are similarly configured, and the left and right lifting motors 37, 37 are synchronized with each other.
By driving the nuts 3 to decelerate and rotate, the nuts 34 move upward or downward, and accordingly, the left and right elevating frames 27 are guided by the guide pipes 28 and the vertical frames 4f to be elevated and lowered.

In the tea leaf plucking device 5, a hair clipper type tea leaf plucking section 38 extending in the left-right direction above the tea tree ridge is arranged immediately in front of the portal frame 4, and tea leaves are provided inside the portal frame 4 behind it. A bag placing table 39 for placing a tea leaf bag containing the tea leaves plucked by the plucking section 38 is arranged, and both ends of the tea leaf plucking section 38 are erected on both left and right sides of the bag placing table 39. It is connected and supported on the upper portions of the side frames 40, 40 via a pair of left and right support stays 41, 41.

The tea leaf plucking section 38 has an engine 42 and a blower 43 driven by the engine 42 at both ends. The hair clipper blade 44 driven by one engine 42 is provided on the upper surface of the tea tree ridge. It curves upward and extends in the left-right direction. The air ducts 45, 45 arranged above the hair clipper blades 44 and connected to the both air blowers 43, 43 extend along the hair clipper blades 44 toward the center in the left-right direction, and the air ducts A plurality of air-blowing nozzles 46 for blowing the tea leaves cut off by the clipper blades 44 rearward are connected to 45, 45 along the longitudinal direction.

A rotary brush 48, which is rotationally driven by a brush drive motor 47, is installed directly above the center of the hair clipper blade 44 in the left-right direction.
A partition plate 49 is installed in the rear of the, and the tea leaves plucked at the center of the hair clipper blade 44 are distributed right and left by the rotary brush 48 and the partition plate 49.

Here, the bag placing table 39 of the tea leaf plucking device 5
The left and right side portions are the pair of left and right lifting frames 2
7, 27, which are connected and supported via a pair of front and rear expansion and contraction support members, respectively, and in FIG. 6 showing one side part of the connection support structure, reference numerals 50 and 50 are the partial horizontal frames 4g, 4h and the partial horizontal frames. It shows a pair of front and rear expansion support members arranged in parallel to the horizontal frames 4i, 4j.

One of the expansion support members 50, 50 will be described as a representative example. A guide pipe 50a fixed to the outer surface of the elevating frame 27 and protruding outward in the left-right direction.
And the guide pipe 50 passing through the elevating frame 27.
a support pipe 50b having a base end portion fixed to the bag placing table 39, the guide pipe 50 being fitted in the inside of a in a freely slidable manner.
a and the screw shaft 5 inserted into the support pipe 50b
0c is mainly configured. The screw shaft 50c is rotatably and axially immovably supported by the protruding tip end of the guide pipe 50a via a bearing 50d, and is screwed into a female screw portion 50e formed on the inner circumference of the tip end of the support pipe 50b. Screw shaft 50
When c rotates, the support pipe 50b moves into the guide pipe 50a.
The bag mounting table 39 along with the support pipe 50b is moved relative to the elevating frame 27 in the left-right direction.

Here, in order to rotationally drive the screw shaft 50c of each of the expandable support members 50, 50, the elevating frame 27 is used.
A reduction gear box 52, to which a support member expansion / contraction motor 51 is integrally connected, is fixed to the outer surface of the, and two drive sprockets 53 and 54 having the same number of teeth are fixed to the output shaft protruding from the reduction gear box 52. ing. Correspondingly, the driven sprockets 5 having the same number of teeth as those of the two drive sprockets 53, 54 are provided at the tips of the screw shafts 50c, 50c protruding from the guide pipes 50a, 50a.
5, 56 are fixed respectively. The drive sprocket 53 and the driven sprocket 55 are connected to the chain 5
7 and the drive sprocket 54 and the driven sprocket 56 are transmitted via the chain 58, so that the pair of front and rear expansion support members 50, 50 are synchronously expanded and contracted at the same speed. Has become. In addition,
The connecting and supporting structure between the elevating frame 27 and the bag placing table 39 on the opposite side is configured symmetrically with that shown in FIG.

Next, the electric system of the orbital type tea leaf plucking machine of one embodiment will be described. The left and right pair of rear wheel drive motors 13, the lateral frame expansion / contraction motor 20, the brush drive motor 47, and the left and right pair of support member expansion / contraction motors. A control box 59 for controlling the rotation of the engine 51 and for controlling the turning off and throttle of the engines 42, 42 is installed on the upper side frame 4a on one side, and a battery 60 serving as a power source for these is installed on the upper side frame 4a on one side. A generator 61, which is suspended from the electric power source and supplies power to the battery 60, is installed on the opposite upper side frame 4a.

The control box 59 has a built-in microcomputer, and controls the rotation of the left and right lifting motors 37 so as to lift the left and right lifting frames 27 and the tea leaf plucking device 5 within a preset height range. The switch 59a, the cutting height adjustment switch 59b for controlling the rotation of the left and right lifting motors 37 so as to finely adjust the height of the tea leaf plucking device 5 in the lowered position, and the left and right rear wheel drives for slowly moving the track carriage 3 forward. A forward travel button 59c for controlling the rotation of the motor 13, a backward travel button 59d for controlling the rotation of the left and right rear wheel drive motors 13 so as to move the track carriage 3 backward at high speed, and a left and right button for stopping the travel of the track carriage 3 in an emergency. At least an emergency stop button 59e for stopping the rotation of the rear wheel drive motor 13 is provided for manual operation, The rotation of the left and right rear wheel drive motors 13 is stopped by the operation of the limit switch 16, and the left and right rear wheel drive motors 13 are rotated at a low speed by the two-step operation of the limit switch 17 and then stopped. ing.

Here, in the control box 59, the tea leaf plucking device 5 is always located in the central portion between the left and right vertical frames 4e, 4e (4f, 4f) of the gate frame 4, and the left and right vertical frames 4e, 4e. A wheel spacing increase button 59f and a wheel spacing reduction button 59g for continuously changing the left-right mutual spacing of the front wheels 7 and the rear wheels 9 by continuously changing the mutual spacing of 4e (4f, 4f) are provided. To be

The left and right lifting motors 37, the left and right rear wheel drive motors 13, the horizontal frame expansion and contraction motors 20, and the left and right support member expansion and contraction motors 51 are feedback-controlled by the control box 59. Left and right drive sprockets 15a
Magnetic sensors 62 are installed in the vicinity of, in the vicinity of the left and right driven sprockets 56, which is the transmission system of the left and right support member expansion / contraction motors 51, and in the reduction gear box 21, which is the transmission system of the horizontal frame expansion / contraction motor 20, respectively. .

Here, in the control box 59, while the wheel gap increase button 59f is being operated,
The partial horizontal frames 4g and 4h and the partial horizontal frames 4i and 4j of the gate-shaped frame 4 are synchronously extended at a predetermined speed, and at the same time, the front and rear and left and right expandable support members 50 are extended at half the extension speed. , The rotation of the horizontal frame expansion / contraction motor 20 and the left and right support member expansion / contraction motors 51 are cooperatively controlled based on the detection signal of the magnetic sensor 62, and while the wheel gap reduction button 59g is operated, the partial horizontal frame 4g, Based on the detection signal of the magnetic sensor 62, the 4h and the partial horizontal frames 4i, 4j are contracted in synchronization with each other at a predetermined speed, and at the same time, the front, rear, left, and right expandable support members 50 are contracted at a speed half the contraction speed. A motor cooperation control unit that cooperatively controls the rotations of the horizontal frame expansion / contraction motor 20 and the left and right support member expansion / contraction motors 51 is configured.

Next, the operation of the orbital type tea leaf plucking machine of the present embodiment constructed as described above will be described. The orbital tea leaf plucking machine of this embodiment performs the plucking work of each tea tree ridge by the rail carriage 3 traveling on the left and right rails 2 and 2 attached between the ridges on both sides of each tea tree ridge in the tea garden. Is something
The distance between the left and right rails 2 and 2 is approximately 150 cm.
Even in different tea gardens, which vary widely over the range of from 200 cm to 200 cm, the wheel spacing increase button 59f or the wheel spacing reduction button 59 of the control box 59 is also increased.
By operating g to continuously change the left-right mutual distance between the front wheel 7 and the rear wheel 9, it can be used in any tea plantation.

When the wheel gap increase button 59f or the wheel gap decrease button 59g is operated, the motor cooperative control means formed in the control box 59 is operated laterally based on the detection signal of each magnetic sensor 62 only during the operation. The rotations of the frame expansion / contraction motor 20 and the left and right support member expansion / contraction motors 51 are cooperatively controlled. That is, when the horizontal frame expansion / contraction motor 20 rotates, as described above, the partial horizontal frames 4g and 4h and the partial horizontal frames 4i and 4j of the gate frame 4 are used.
Are expanded and contracted in synchronization with each other, and when the support member expansion / contraction motor 51 is rotated, the expansion / contraction support members 50 on the front, rear, left and right sides are expanded and contracted.
Is operated, the partial horizontal frames 4g, 4h and the partial horizontal frames 4i, 4j extend at a predetermined speed, and at the same time, the respective expansion and contraction support members 50 move half of the partial horizontal frames 4g, 4h and the partial horizontal frames 4i, 4j. The rotations of the horizontal frame expansion / contraction motor 20 and the left and right support member expansion / contraction motors 51 are controlled in a coordinated manner so as to expand at a speed of.

Similarly, the motor cooperative control means causes the partial lateral frames 4g, 4h and the partial lateral frames 4i, 4j to contract at a predetermined speed only while the wheel gap reduction button 59g is being operated, and at the same time, each expansion and contraction. The horizontal frame expansion / contraction motor 2 is arranged so that the support member 50 contracts at half the speed of the partial horizontal frames 4g, 4h and the partial horizontal frames 4i, 4j.
The rotation of the 0 and left and right support member expansion / contraction motors 51 is cooperatively controlled.

Therefore, when the distance between the left and right rails 2 and 2 attached to the tea plantation is wide, the wheel distance increase button 59f of the control box 59 is operated in advance. Then, the gate-shaped frame 4 includes the left and right vertical frames 4e, 4e.
(4f, 4f) spreads left and right at a predetermined speed together with the front wheels 7 and the rear wheels 9 mounted on the left and right bogie side frames 6 and 6, thus adjusting the mutual distance between the front wheels 7 and the rear wheels 9. At this time, the front and rear and left and right expansion and contraction support members 50 extend at a speed that is half the speed at which the left and right vertical frames 4e, 4e (4f, 4f) spread, so that the left and right elevating frames 27 are extended via the expansion and contraction support members 50. The bag placing table 39 of the tea leaf plucking device 5 connected and supported to the left and right vertical frames 4e, 4
e (4f, 4f) is relatively moved away from e (4f, 4f) and is always located at the center of the left and right vertical frames 4e, 4e (4f, 4f).

The track type tea leaf plucking machine of this embodiment, in which the left-right mutual spacing of the front wheels 7 and the rear wheels 9 is adjusted in accordance with the mutual spacing between the left and right rails 2, 2 attached to the tea plantation, is shown in FIG. It is mounted on a ridge moving carriage 63 as shown and conveyed through the end side passage of each tea ridge in the tea plantation. In this case, the left and right front wheels 7 and the rear wheels 9 of the orbital type tea leaf plucking machine are paired with the connecting rails 63a, 63 which are arranged in front and rear of the ridge moving carriage 63.
The orbit type tea leaf plucking machine is supported by connecting the connection rails 63a, 63a to the left and right rails 2, 2 which are supported on a and are attached between the ridges on both sides of the tea tree ridge T for performing plucking work. It becomes possible to travel on the left and right rails 2, 2.

The orbital type tea leaf plucking machine of this embodiment, which moves forward at a low speed by operating the forward traveling button 59c of the control box 59 and rides on the left and right rails 2 and 2,
The tea leaf plucking device 5 is adjusted to a predetermined mowing height by operating the elevating switch 59a and the cutting height adjusting switch 59b, so that the tea tree ridges are plucked according to the low speed forward movement. Then, when the limit switch 16 is actuated by the stopper 2a protruding from the one rail 2 at the work end position, the rotation of the left and right rear wheel drive motors 13 is stopped and the orbital type tea leaf harvesting machine is automatically stopped. Further, in the orbit type tea leaf plucking machine in which the tea leaf plucking device 5 is raised and held at a predetermined height by the elevating switch 59a at the work end position, the backward travel button 5 is used.
By operating 9d, the vehicle runs backward on the left and right rails 2 and 2 at high speed, and eventually the connection rails 63a and 63 of the ridge moving carriage 63.
Get on a. At that time, the limit switches 17 are operated in two steps by the two stoppers 63b and 63c provided on the ridge moving carriage 63, so that the left and right rear wheel drive motors 13 are decelerated at a low speed and then stopped. The orbit type tea leaf plucking machine decelerates to a predetermined speed and rides on the connection rails 63a, 63a of the ridge moving carriage 63, and the ridge moving carriage 6
It automatically stops at the predetermined position of 3.

Here, when there is a height difference between the left and right rails 2 and 2 laid between the ridges on both sides of each tea tree ridge T in a sloping area, the gate-shaped frame 4 corresponds to the height difference.
Left and right vertical frames 4e, 4e of the front department type frame 4c
And left and right vertical frames 4f, 4 of the rear department type frame 4d
Adjust f so that the valley side is longer and the mountain side is shorter.
This expansion / contraction adjustment is performed by adjusting the vertical frame 4e, as shown in FIG.
The lower end of 4e is connected to the front connecting column 6 of the truck side frame 6.
the connecting pin 19 connected to a and the vertical frames 4f, 4
The lower end of f is connected to the rear connecting column 6b of the truck side frame 6.
This is performed by changing the insertion position of the connecting pin 19 connected to the upper and lower pin holes 18.

In addition to the expansion and contraction adjustment of the vertical frames 4e, 4e and the vertical frames 4f, 4f, the left and right rails 2,
The left-right mutual distance between the front wheels 7 and the rear wheels 9 is adjusted by operating the wheel-spacing increase button 59f or the wheel-spacing decrease button 59g of the control box 59 described above in accordance with the plane projection distance of 2.

By doing so, even when there is a difference in height between the left and right rails 2, 2 laid between the ridges on both sides of each tea tree ridge T, the orbit type tea leaf plucking machine has its gate-shaped frame 4 substantially vertical. Since the posture is maintained, the center of gravity of the orbital type tea leaf plucking machine is located approximately at the center between the left and right rails 2 and 2, and it is possible to work safely in a stable posture even on a sloped land.

[0045]

As described above, according to the present invention employing the first means, the motor for automatically expanding and contracting the horizontal frame of the gate type frame and the vertical drive of the left and right vertical frames of the gate type frame are driven. The tea leaf plucking device is always operated by the motor coordinated control means by the motor coordinated control means for the motors that extend and retract the left and right telescopic support members that connect and support the tea leaf plucking device to the left and right elevating frames. Since the mutual distance between the left and right vertical frames is continuously adjusted while being located at the center between the left and right vertical frames, the left and right distance between the wheels of the track truck is continuously adjusted accordingly. The machine can run on the rails even if there are large variations in the distance between the left and right rails laid between the ridges on both sides of the tea ridge, and it can be used in tea gardens with widely different rail intervals. And it can also be used shared by one model.

Further, according to the present invention employing the second means, when the tea plantation is on a sloping ground and there is a difference in height between the left and right rails laid between the ridges on both sides of the tea ridge, the left and right sides of the gate-shaped frame are By adjusting the vertical frame of the vertical frame so that the valley side is long and the mountain side is short, and the mutual intervals are adjusted according to the plane projection intervals of the left and right rails, the gate-shaped frame is held in a substantially vertical position Since the center of gravity of the plucking machine is located approximately in the center between the left and right rails, it is possible to work safely in a stable posture even on a slope.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing the structure of an embodiment of an orbital type tea leaf plucking machine according to the present invention.

FIG. 2 is an overall side view showing the structure of one embodiment.

FIG. 3 is a half-cut sectional view showing a support structure for one rear wheel in one embodiment.

FIG. 4 is a partially enlarged perspective view showing a vertical frame expansion / contraction adjusting structure in one embodiment.

FIG. 5 is a partially enlarged front view showing an automatic expansion / contraction structure of a horizontal frame in one embodiment.

FIG. 6 is a partially enlarged plan view showing a partially broken structure of an elevating frame and a telescopic support member according to an embodiment.

FIG. 7 is a perspective view of a ridge moving carriage used for carrying work according to an embodiment.

[Explanation of symbols]

 2 rails 3 orbital trolley 4 gate type frame 4a upper side frame 4b lower side frame 4c front department type frame 4d rear department type frame 4e, 4f vertical frame 4g, 4h partial horizontal frame 4i, 4j partial horizontal frame 5 tea leaf picking device 6 dolly Side frame 6a Front connection column 6b Rear connection column 7 Front wheel 8 Front wheel support base 9 Rear wheel 10 Rear wheel support base 13 Rear wheel drive motor 18 Pin hole 19 Connection pin 20 Horizontal frame expansion / contraction motor 21 Reduction gear box 22 Bearing case 23 Nut 24 screw shaft 25 joint 26 interlocking shaft 26a universal joint 27 elevating frame 37 elevating motor 38 tea leaf picking section 39 bag placing table 47 brush drive motor 50 expansion support member 50a guide pipe 50b support pipe 50c Ji Shaft 50d Bearing 50e Female screw portion 51 Supporting member Expansion / contraction motor 52 Gear case 53, 54 Drive sprocket 55, 56 Driven sprocket 57, 58 Chain 59 Control box 59a Elevating switch 59b Cutting height adjusting switch 59c Forward traveling button 59d Reverse traveling button 59e Emergency stop Button 59f Wheel space increase button 59g Wheel space decrease button 60 Battery 61 Generator 62 Magnetic sensor

Claims (2)

[Claims] 1. A track carriage having a gate-shaped frame straddling a tea tree ridge and traveling on left and right rails laid between the ridges on both sides of the tea tree ridge, and ascending / descending along the left and right vertical frames of the gate frame. In an orbital type tea leaf plucking machine equipped with a tea leaf plucking device which is freely drivable, the portal frame is configured such that a horizontal frame that is horizontally crossed over the left and right vertical frames is automatically stretchable by a motor drive. The tea leaf plucking device is connected to and supported by left and right elevating frames that are vertically moved along the left and right vertical frames via left and right elongate support members that extend and contract in parallel with the horizontal frame by a motor drive, The respective motors for driving the lateral frame and the left and right expandable support members to expand and contract are coordinated by the motor coordination control means so that the tea leaf plucking device is always positioned in the center between the left and right vertical frames. An orbital type tea leaf plucking machine characterized by controlling. 2. The orbital type tea leaf plucking machine according to claim 1, wherein the gate-shaped frame is configured such that the left and right vertical frames can be individually adjusted for expansion and contraction.