JP2001299045A - Tea garden-controlling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tea garden-controlling machine performing plucking, branch cutting, extermination, or the like, while traveling along tea ridges, capable of being manufactured inexpensively by simplifying an up and down mechanism of a lifting up and down bracket attached to a working machine. SOLUTION: This tea garden-controlling machine is simplified by installing the lifting up and down bracket constituted by a sliding plate having a small frictional coefficient along the supporting rod of the machine frame, a guiding plate at the supporting rod so as to stop swinging by wrapping in the lifting up and down bracket and a means for making the lifting up and down bracket up and down with the combination of a worm wheel and a worm gear.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for raising and lowering a work tool attached to a tea garden management machine for managing tea gardens such as plucking, pruning, cutting and pest control while traveling in a tea garden. The above-mentioned tea garden management machine includes a riding type that travels in a furrow using a traveling device using an endless transport zone, and a rail traveling type that travels on a rail laid in a furrow.

[0002]

2. Description of the Related Art As a typical example of a tea garden management machine, a tea leaf plucking machine will be described.
Japanese Utility Model Publication No. 7-39392 and Japanese Patent Application Laid-Open No. 10-262434. The former is a rail-running plucker, and the latter is a riding plucker, both of which use the same method. In these, a guide rod for elevating is provided along a column, and the guide rod is sandwiched by four rollers to prevent the lifting body from oscillating.
Further, a screw rod is provided inside the column, and by rotating the screw rod, the elevating body attached to the female screw side is moved up and down, and the plucking device attached to the elevating body is moved up and down. The plucking device has a tea bag support frame at the rear, which also moves up and down integrally with the plucking device. Therefore, in order to support the tea bag support frame, an elevating frame with a roller mounted around the column is provided using the rear column as a guide, and the elevating frame serves as a steady rest of the tea bag support frame.

[0003]

As described above, the conventional one requires a guide rod separately from the support of the body in order to guide the up and down of the elevating body, and the four rollers sandwiching the guide rod are required. Must be attached to the lifting body. The guide rod must be provided completely parallel to the column. Further, in order to drive up and down, a precision member such as a screw rod and a female screw which accumulates the screw rod is required. In addition, there is a difficult work of embedding the screw rod inside the column, and the column must be cut out in order to connect the elevating body with the female screw, so that the strength of the column is weakened. A rotating shaft is mounted horizontally to connect the above-mentioned lifting mechanism using the screw rods provided on the left and right supports of the gate formwork, but a bevel gear is required at the connection to change the rotation direction to a right angle. And In order to support the tea bag support frame, the lifting frame provided on the rear support column does not have a drive mechanism for lifting, so it will move up and down by the force of the screw rod provided on the front gate frame, In this case, there are many problems, for example, a force is generated to pry the tea bag support frame connecting the front and rear elevating frames, the front and rear columns, the elevating guide, and the like. SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive elevating device which has a simple structure and does not generate excessive force.

[0004]

In order to solve the above problems, according to the first aspect of the present invention, there is provided a gate-shaped body extending over a tea ridge and a tea garden management machine having a traveling device at a lower part of the body.
A means for raising and lowering a bracket that slides up and down along a column that constitutes the fuselage, and wrapping the lifting and lowering bracket from the front and back, from the left and right, and a guide plate fixed to the column, is used as a guide for up and down operation. . In this case, since the column itself forming the portal frame serves as a guide for the lifting bracket, it is not necessary to provide a guide rod separately from the column.
Since the guide plate is attached to the support column and is used as a vibration stopper for the front and rear and left and right sides of the lift bracket, the four guide rollers provided on the lift body as in the related art are not required. Since there is no need to cut the strut itself, the strength of the strut is not reduced. Conversely, by attaching the guide plate to the support,
The struts are reinforced.

According to a second aspect of the present invention, there is provided a means for mounting a member having a low coefficient of friction on the lifting bracket.
With this configuration, even if a large force is applied to the lifting bracket, the bracket can be smoothly moved up and down with a small force. Unlike a conventional guide roller, a force is received by a flat member, not by a single point, so that a greater force can be received without difficulty.

According to a third aspect of the present invention, a means for mounting a member having a low coefficient of friction on the guide side of the lifting bracket is used. In the second aspect, a member having a small friction coefficient is provided on the lifting bracket side, but the same effect can be obtained by providing the member on the guide side as in the third aspect.

According to a fourth aspect of the present invention, a means is provided in which sprockets are provided above and below the column, a chain is stretched along the column, the lifting bracket is connected with the chain, and the column is moved up and down. This eliminates the need for a screw rod for raising and lowering and a female screw. In the case of a screw rod, it must be provided exactly in parallel with the lifting guide, but if it is moved up and down with a chain as in the present invention, the chain is flexible, and it is particularly precisely parallel There is no need to put it out. In the combination of the screw rod and the female screw, it is necessary to rotate the screw rod at high speed in order to obtain the vertical speed of the elevating body. For this reason, the friction of the screw portion is severe, and it is necessary to supply oil to the screw portion. With a chain drive, it is not necessary to turn the sprocket particularly quickly.

According to the fifth aspect of the present invention, the above-mentioned vertical mechanism is provided on the left and right columns of the portal frame forming the body, the sprocket provided on the upper part is connected by a rotating shaft, and a worm wheel is provided on the rotating shaft. The worm gear integrated therewith is turned by the handle, and the left and right lifting brackets are raised and lowered simultaneously. This eliminates the necessity of a conventional bevel gear for connecting a lifting shaft provided on the left and right columns and a rotating shaft horizontally laid on the portal frame as in the related art. If the above-mentioned handle is set at an appropriate position on the rotating shaft on which the handle is suspended, the handle can be turned directly up and down from the driver's seat. If the speed reduction ratio between the worm and the worm wheel is set to an appropriate value, a self-locking function to stop at that position occurs, so that the lifting bracket does not lower due to gravity.

According to a sixth aspect of the present invention, a means is provided in which a motor is connected to the handle shaft and the lifting bracket is moved up and down by power. In this way, it is possible to raise and lower quickly without requiring the power of the operator.
It is also possible to raise and lower automatically. By turning the handle, the elevating bracket can be adjusted to an approximate position, and a delicate up-down operation can be performed by automatic operation.

In the invention of claim 7, the elevator bracket and the rotating shaft are provided on the front and rear portal frames constituting the body, and the rotating shafts provided on the front and rear portal frames are connected by a chain. Means to raise and lower the three lifting brackets at the same time. In this way, the lifting bracket of the front column and the lifting bracket of the rear column of the fuselage can be supported separately by the power of the lifting chain, so excessive force can be applied to the column, lifting bracket, plucking device, and tea bag holding frame. This does not occur, and the space between the front and rear struts can be increased. As described above, by using the means of claims 1 to 7, it is possible to solve the problem of the conventional vertical mechanism of the lifting bracket for attaching the working machine of the tea garden management machine.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, description will be made based on embodiments. FIG. 1 is a side view of a riding type tea leaf picking machine which is a typical example of the tea garden management machine of the present invention, and FIG. 2 is a plan view. FIG. 3 is a front view. Reference numerals 1 and 2 denote traveling devices using an endless transport zone.
The left and right traveling devices are connected by a front portal form 3 and a rear portal form 4. Elevating brackets 5 and 6 that move up and down along the columns are provided on the columns 11 and 12 of the front portal frame. The columns 13 and 14 of the rear portal form are provided with elevating brackets 7 and 8 that move up and down along the columns. Elevating brackets 5, 6
Is mounted with a plucking machine 9. A tea bag holding frame 10 is attached to the lifting brackets 7 and 8. Plucking machine 9 and tea bag holding frame 10
Are connected to each other and are united.

FIG. 4 shows details of the lifting bracket.
This will be described in 5 and 6. FIG. 4 is an enlarged view of a portion of the front column 11 in FIG. 1, and FIG. 5 is a view taken in the direction of arrows AA in FIG. 4. An elevating bracket 5 is provided on the front column 11 and moves up and down along the column 11. To the left and right of the support 11,
Guide plates 17 and 18 are screwed so as to enclose the lifting bracket 5. A small gap is provided at the center of the left and right guide plates 17 and 18, and a part of the lifting bracket projects from this portion, and the picking device 9 is attached to this portion. The elevating bracket 5 has a sliding plate 15 attached to a sliding portion with the column, and a sliding plate 16 attached to the sliding portion with the guide plates 17 and 18. The sliding plate is a member with low frictional resistance (Teflon (registered trademark), polyethylene, etc.)
Anything is fine. A sprocket 19 is provided on the upper part of the support 11, a sprocket 20 is provided on the lower part, and a chain 21 is stretched. The end of the chain 21 is connected to the lifting bracket 5.

FIG. 6 shows a portion of the front column 11 corresponding to FIG. With respect to the rear column 13, the lifting bracket 7 is attached to the inside of the fuselage. Reference numerals 22 and 23 denote sliding plates.
Reference numerals 4 and 25 are guide plates attached to the support 13. As in FIG. 4, upper sprockets 26 above and below the strut are also provided on the rear strut.
A lower sprocket 27 is provided, a chain 28 is stretched, and is connected to the lifting bracket 7. The lifting bracket 7 supports the tea bag holding frame 10.

At the upper part of the left and right supports of the gate form, sprockets connected to the lifting chains are provided, respectively, and are connected by rotating shafts. 7 and 8, a description will be given of the lifting drive unit provided near the column 11 on the driver's seat side.
FIG. 7 is an enlarged view of the lifting handle of FIG.
FIG. 8 is a diagram of FIG. 7 viewed from above. A rotary shaft 29 that connects the left and right sprockets is horizontally mounted on the gate frame 3.
A worm wheel 30 is fitted on the rotating shaft 29, and a worm gear 31 is integrated. The worm gear 31 is connected to the upper handle 32. The handle 32 is provided at a position where an operator 37 can reach from the driver's seat 38. A motor 33 is provided below the opposite side of the handle 32. The rotation axis 29 of the front section formwork 3 and the rotation axis 35 of the rear section formwork 4 include:
Sprockets 42 and 43 are respectively fitted, and are connected by a chain 36.

Next, the method of use will be described. When the operator 37 reaches out of the driver's seat 38 and turns the handle 32, the rotating shaft 29 rotates and the sprockets 19, 20, 2
6, 27 rotate. The lifting brackets 5 and 6 connected to the lifting chain are moved up and down, and the plucking machine attached to the lifting brackets 5 and 6 is moved up and down to match the height of the tea plant. At this time, since the rear rotating shaft 35 is also connected by the chain 36, the raising and lowering brackets 7, 8 of the rear column similarly move up and down, and the rear part of the tea bag holding frame supported by this also moves up and down.
However, since it is not always necessary to raise and lower simultaneously, it is not necessary to provide the chain 36 for connecting the front and rear rotating shafts,
Similar to the front frame, the rear frame may be provided with a handle so as to be individually moved up and down. The front plucking machine always needs to be precisely aligned with the height of the tea plant, but the rear tea bag holding plate only needs to be adjusted so that it does not hit the tea plant. is there. The motor 33 is not always necessary, but when the up and down control is performed by automatic operation, the rotating shaft 29 is rotated by the motor 33 and moved up and down.

In the embodiment, the tea leaf picking machine has been described. However, when performing the pruning and cutting work, the pruning machine and the cutting machine are attached to the lifting bracket instead of the plucking machine. At the time of control work, a mist spraying device is attached to the lifting bracket.

[0017]

According to the present invention, since the column itself constituting the body is used as the elevating guide, there is no need to provide a guide rod separately from the column. Since it is the chain that transmits the force to move the lifting guide up and down, it is easier than a screw rod. Since the guide plate of the lifting bracket is attached to the column, the column becomes strong. Since there is no elevating body such as a roller that moves up and down the outside of the support, you can touch the outside of the support,
Low risk. In addition, it is possible to attach a support or the like to the outside of the support. Since the front support column and the rear support column each have a lifting chain, no excessive force is applied to the lifting body. Strong force can be applied to the tea bag holder. The manufacture of the airframe is simple, there are few failures, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a riding plucker.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is an enlarged view of a front pillar portion.

FIG. 5 is a view taken in the direction of arrows AA.

FIG. 6 is an enlarged view of a rear strut.

FIG. 7 is an enlarged view of a lifting handle portion of FIG. 3;

FIG. 8 is a view of FIG. 7 as viewed from above.

[Explanation of symbols]

 Reference Signs List 1 traveling device (left) 2 traveling device (right) 3 (front) portal form 4 (rear) portal form 5 lifting bracket (front left) 6 lifting bracket (front right) 7 lifting bracket (back left) Reference Signs List 8 lifting bracket (back right) 9 plucking machine 10 tea bag holding frame 11 support (front left) 12 support (front right) 13 support (rear left) 14 support (rear right) 15 sliding plate (front left) 16 sliding plate (front) Left) 17 Guide plate (front left) 18 Guide plate (front left) 19 Sprocket (front left and right) 20 Sprocket (front left and right) 21 Chain (front left and right) 22 Sliding plate (rear left and right) 23 Sliding plate (rear left and right) 24 Guide Board (rear left) 25 Guide plate (rear left) 26 Sprocket (rear left upper) 27 Sprocket (rear lower left) 28 Chain (rear left) 29 Rotary shaft (front) 30 Worm wheel 31 Worm gear 32 Handle 33 Motor 34 Bearing 35 Rotating shaft (rear) 36 Chain (for front and rear connection) 37 Worker 38 Driver's seat 39 Tea bag 40 Tea ridge 41 Engine 42 Sprocket (for front and rear connection) 43 Sprocket (for front and rear connection)

Claims (7)

[Claims] 1. A gate-shaped airframe extending over a tea ridge and a tea garden management machine having a traveling device at a lower portion of the airframe, a lifting bracket that slides up and down along a column constituting the airframe is provided. A tea garden management machine characterized in that the bracket is wrapped from front to back, right and left by a guide and a guide plate fixed to the support, and used as a guide for up and down movement. 2. The tea garden management machine according to claim 1, wherein a member having a small coefficient of friction is attached to said lifting bracket. 3. The tea garden management machine according to claim 1, wherein a member having a small coefficient of friction is attached to a guide side of the lifting bracket. 4. Sprockets are provided above and below the column,
The chain is stretched along a column, and the lifting bracket is connected with the chain and moved up and down.
The tea garden management machine according to 2 or 3. 5. The left and right supports of a gate formwork constituting the body,
The above-described vertical mechanism is provided, a sprocket provided on the upper part is connected with a rotating shaft, a worm wheel is provided on the rotating shaft, a worm gear integrated therewith is turned with a handle, and the left and right lifting brackets are simultaneously moved up and down. The tea garden management machine according to claim 1, 2, 3, or 4, wherein 6. A motor is connected to the handle shaft,
The tea garden management machine according to claim 1, 2, 3, 4, or 5, wherein the lifting bracket is moved up and down by power. 7. The vertical bracket and the rotary shaft are provided on the front and rear portal frames constituting the body, and the rotary shafts provided on the front and rear portal frames are connected by a chain, and the four front, rear, left and right vertical brackets are connected. Claim 1, characterized in that it is raised and lowered at the same time.
The tea garden management machine according to 2, 3, 4, 5, or 6.