JP2002159209A - Plant cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that in a plant cutting machine, when cutting operation in a field is not completed by one stroke of traveling of the machine body by the length of a shearing blade due to a wide field, the machine body is required to turn at the end of a field so as to reciprocate the machine body in the field, since the machine body is lengthened in the right and left direction because the shearing blade is set long in the right and left direction in order to improve efficiency of a cutting operation in one stroke of traveling of the machine body, the machine body cannot be readily turned since the rotation space of the machine body is needed and the rotation is a factor to reduce the operation efficiency of cutting operation in a field. SOLUTION: In this plant cutting machine, the plant cutting machine has a constitution in which a plurality of traveling wheels 2 are installed, a rotation part 23 equipped with a shearing blade 13 for cutting a plant is arranged rotatably around the revolving shaft 21 of the shearing blade and movably right and left relatively to a machine frame, the revolving shaft 21 of the shearing blade is laid at the position of the center of gravity of the rotation part 23 on a plan view and a plurality of the traveling wheels 2 can be wholly operated in the same direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of a plant shearing machine for shearing a plant at a predetermined height by a shearing blade.

[0002]

2. Description of the Related Art A plant shearing machine for shearing a plant cultivated in a cultivation house or a field such as an alley at a predetermined height is disclosed in Japanese Patent Application Laid-Open No. Hei 10-136743. This plant shearing machine has a configuration in which a shearing blade for shearing a plant is provided long between the running wheels as left and right running bodies in the left-right direction, and the plant is sheared at a predetermined height while running the machine. .

[0003]

In the above-mentioned prior art configuration, when a plant being cultivated so as to be laid on the ground of a field to be cultivated efficiently is sheared at a predetermined height, the shearing blade is used because the field is wide. If the shearing operation in the field is not completed in one stroke of the travel of the body due to the length of the body, the shearing operation must be performed by reciprocating the body in the field. At this time, it is necessary to turn the aircraft at the end of the field, but since the shear blades are provided longer in the left-right direction to improve the efficiency of the shearing work in one stroke of the travel of the aircraft, the aircraft is longer in the left-right direction. Therefore, since the turning space of the body is required, the turning of the body cannot be easily performed, which causes a reduction in work efficiency of the shearing work in the field.

[0004]

The present invention takes the following technical means to solve the above-mentioned problems. In other words, the invention according to claim 1 is provided with the traveling body 2 for running the body while touching the ground, and enables the rotating portion 23 including the shearing blade 13 for shearing the plant to be rotatable around the vertical rotating shaft 21. The plant shearing machine is characterized in that it is provided so as to be able to move left and right with respect to the machine frame, and the turning shaft 21 in the vertical direction is disposed at the center of gravity of the turning part 23 in plan view.

[0005] Further, according to the second aspect of the present invention, the rotating portion 23
The engagement tool 24 provided on the machine frame side by the lateral movement or rotation of
The plant shearing machine according to claim 1, wherein the rotating member 23 is fixed to the machine frame side so that the rotating member 23 does not move by engaging the engaged member 22 provided on the rotating portion 23. And

The invention according to claim 3 is provided with a shearing blade 13 for shearing plants and a plurality of running wheels 2 for running the body, and all the running wheels 2 can be steered in the same direction. A plant shearing machine characterized in that:

[0007]

According to the plant shearing machine of the first or second aspect of the present invention, the work in the field can be sheared by the shearing blade 13 by running the body by the traveling body 2. And the rotating part 23 provided with the shearing blade 13 at the end of the field
Is rotated about the vertical rotation axis 21 so that the shearing blade 13 is directed to the opposite side, and the shearing blade 13 is moved left and right with respect to the machine frame so as to pass through the unworked position, so that the aircraft is returned. This makes it possible to easily change the direction and the left-right position of the shearing blade 13 without turning the entire body, and to efficiently perform the shearing operation by reciprocating the body.
Further, since the vertical rotation shaft 21 is disposed at the position of the center of gravity of the rotation unit 23 in plan view, the rotation space necessary for the rotation of the rotation unit 23 around the rotation shaft 21 is provided. Not only can be easily rotated even at the end of the field, but also the structure can be simplified by being able to firmly support the rotating part 23 from the machine frame via the rotating shaft 21. , The weight and cost can be reduced, and the supporting rigidity of the shearing blade 13 can be sufficiently obtained. Therefore, the height of the shearing of the plant by the shearing blade 13 can be appropriately stabilized, and the rotating part can be further improved. Since the rotation of 23 can be performed with a light force, the rotation operation can be easily performed, and the shearing operation can be efficiently performed.

Further, in the plant shearing machine according to the second aspect, the engaging tool 24 provided on the machine frame side and the engaged tool provided on the rotating part 23 are provided by the lateral movement or rotation of the rotating part 23. Since the rotating part 23 is fixed to the machine frame side by engaging with the member 22, the direction and the left and right position of the shearing blade 13 are changed to perform the shearing work by reciprocating the body. The rotation unit 23 can be fixed so as not to move by the left-right movement operation or the rotation operation of the rotation unit 23, and there is no need to perform a special fixing operation different from the left-right movement operation or the rotation operation. The operation of fixing the moving part 23 can be easily performed, and the shearing operation can be efficiently performed.

In the plant shearing machine according to the third aspect of the present invention, the body is driven by the plurality of traveling wheels 2 so that the shearing blade 13 can perform a shearing operation of the plant in the field. Then, in order to perform a shearing operation of the next step at the end of the field, all of the traveling wheels 2 are steered in the same direction in the left-right direction so that the shearing blade 13 passes through the non-working position, and the body is moved left and right. The left and right positions of the shearing blades 13 can be easily changed without turning the entire body, and thereafter, all directions of the traveling wheels 2 can be steered back to the original direction to run the body, Shearing work can be performed efficiently.

[0010]

An embodiment of the present invention will be described with reference to the drawings. The figure shows a plant shearing machine 1. This plant shearing machine 1 arranges and cultivates plants such as onions and rushes which are spread and cultivated in a cultivation house at a predetermined height. The plant shearing machine 1 is provided with four running wheels 2 which are front, rear, left and right running bodies running in a cultivation house, and provided with right and left running part frames 3 to which these running wheels 2 are attached. I have. Left and right running part frames
A total of two left and right frames 4 extending in the left and right direction are provided so as to connect the upper portions of the frames 3, and two left and right frames are provided by frame connection plates 5 provided at both ends of the left and right frames 4. 4 is fixedly connected. Upper and lower frames 6 extend downward from both ends of the lower left and right frames 4, respectively. The left and right frames 4, the frame connecting plate 5, the upper and lower frames 6, and the like constitute a machine frame. At both ends of the left and right frames 4, left and right frames
An up / down adjustment handle 7 for moving the running frame 3 up and down with respect to the frame 4 is provided on each of the left and right sides. The four running wheels 2 are idle wheels.

The running frame 3 is provided with an upper frame portion 8 in the vertical direction and a lower frame portion 9 in the front-rear direction. An up / down adjustment handle 7 is rotatably mounted on the upper frame portion 8. And this vertical adjustment handle 7
Of the rotating shaft 7a is screwed to the left and right frames 4,
By rotating the vertical adjustment handle 7, the left and right frames 4 are moved up and down with respect to the left and right traveling wheels 2, and the height of the left and right frames 4 is adjusted. still,
The traveling wheel 2 is provided with a vertical shaft 2 provided on the lower frame portion 9.
A steering shaft 2a of each of the right and left front and rear wheels 2 is connected by a steering link 2b so that the front and rear wheels 2 are simultaneously steered.

The two left and right frames 4 are arranged at different vertical and vertical positions and are provided in parallel with each other. The left and right frames 4 are formed of rectangular pipes, and the shaft portions of the left and right central portions 4b are inserted into the cylindrical portions of the left and right end portions 4a, so that the entire left and right length can be changed. In addition, a butterfly bolt 4c for fixing the shaft portion of the left and right central portion 4b to the cylindrical portion of the left and right end portions 4a of the left and right frame 4 is provided so that the frame can be fixed at a desired left and right length.
A reinforcing member 10 is provided between the two left and right frames 4 at an appropriate position in the left and right direction. A left and right moving body 11 is provided which can move left and right along the left and right frames 4. The left and right moving body 11 is a guide roller 11 for guiding the left and right moving body 11 along the base 11a and the left and right frames 4.
b, 11c. In addition, the guide roller 11
4b, 11c are in contact with the front and rear of the upper left and right frames 4.
Two pieces 11b in contact with the piece 11b and the lower left and right frames 4
and 6 are provided in total. Therefore, the left and right moving body 11
Is moved right and left along the left and right frames 4 by the guide rollers 11b and 11c. The left and right moving body 11 moves left and right only on the shaft portion of the left and right central part 4b of the left and right frame 4. Also, the left and right frames 4 have the shaft portions of the left and right central portions 4b exposed from the cylindrical portions of the left and right end portions 4a of the left and right frames 4 so that the left and right moving bodies 11 can be located even when the left and right lengths are minimized. It is configured to be.

The shearing blade 13 is provided horizontally below the left and right frames 4 between the left and right traveling wheels 2 and horizontally long and has a blade surface oriented in the traveling direction of the machine body. Shearing at the height of.
The shearing blade 13 is transmitted through the crank mechanism 15 and the like by the drive of the engine 14 having an output shaft in the vertical direction and swings slightly, thereby improving the shearing ability of the plant. A plurality of air nozzles 16 arranged on the left and right sides are provided on the front side of the shearing blade 13, and the engine 1
The pressure air is supplied to the air nozzle 16 through the air chamber 18 in the left-right direction by the air from the blower 17 provided immediately below the air nozzle 4, and the air nozzle 16 discharges the pressure air backward. . The air chamber 18 is configured so as to become thinner as it goes away from the blower 17, and a plurality of air nozzles 1 arranged on the left and right sides.
6 are configured such that the pressures of the pressure winds are equal to each other. On the rear side of the shearing blade 13, a storage bag 19 that stores the sheared portion of the plant is mounted. The storage bag 19 is formed in a net shape and has a front side (shear blade 1).
3) is opened to receive the pressurized air from the air nozzle 16 from the front open portion and to release the pressurized air from the mesh portion to the outside of the bag. Therefore, the portion sheared by the shearing blade 13 is blown backward by the air nozzle 16 and supplied to the storage bag 19, and the sheared portion is collected in the storage bag 19. A storage bag mounting table 20 for mounting the storage bag 19 is provided.

The shear blade 13, the engine 14, the air nozzle 16, the blower 17, the air chamber 18, the storage bag mounting table 20, and the like are provided on the left and right moving body 11 via a vertical shear blade rotating shaft 21. Is supported by the shearing blade frame 22 and can be moved left and right with respect to the traveling wheel 2 so that the front and rear directions can be changed by rotating around the shearing blade rotating shaft 21. Therefore, the shear blade 13, the engine 14, the air nozzle 16, the blower 17, the air chamber-1
8. The rotating portion 23 is constituted by the storage bag mounting table 20, the storage bag 19, and the like. The center of gravity of the entire rotating portion 23 is provided on the engine 14 and the blower 17 side from the left and right center of the shearing blade 13 in the left-right direction. As shown in FIG. Are provided at the same position. The ends of the shearing blade frame 22 are fixed in position by left and right fixing leaf springs 24 provided at the lower ends of the left and right upper and lower frames 6, whereby the shearing blade 13 moves left and right and rotates. The position is fixed so that it does not.
Therefore, the shearing blade frame 22 is an engaged member provided on the rotating portion 23, and the fixing leaf spring 24 is an engaging tool provided on the machine frame side, and the shearing blade frame 22 and the fixing plate are provided. By engaging the spring 24, the rotating portion 23 is fixed to the machine frame so as not to move left and right and rotate.

A control handle 25 is provided on the shearing blade frame 22. The steering handle 25 has a throttle lever-2 for changing the rotation speed of the engine 14.
The throttle lever 26 allows the drive speed of the shearing blade 13 and the pressure of the pressurized air from the air nozzle 16 to be appropriately changed according to the shearing condition of the plant and the shearing operation speed. The steering handle 25 is provided so as to be rotatable around a vertical axis 25a, and can be changed in position according to the position of the worker. Then, the operator can carry out the shearing operation of the plant by grasping the steering handle 25 and moving the body forward. It should be noted that the left and right running part frames
A tow rope 27 can be attached to the lower frame portion 9 of the frame 3, and an operator can pull the rope 27 to move the machine forward. Note that the rope 2
7 has left and right running wheels 2 of different lengths.
The worker walking in front of one of the left and right ropes 2
7 can be gripped. The rope 27
A grip portion 27a for gripping by an operator is formed at an end of the grip.

As an example, a case where the leaves h of the onion seedlings raised in the seedling boxes p laid in a large number in the cultivation house are trimmed to a certain height will be described. The left and right frames 4 are extended and contracted so that the left and right traveling wheels 2 travel on the place where they are not laid, and fixed by the butterfly bolts 4c. In the case of FIG. 1, the left and right traveling wheels 2 straddle five seedling raising boxes p in the left-right direction. Then, the right and left moving body 11 is moved left and right, and the shearing blade frame 22 is fixed by the fixing leaf spring 24, and the rotating portion 23 including the shearing blade 13 is fixed. In addition, the shearing blade 13 is applied to the leaves of the onion seedlings h in the left-right direction.
The left and right up / down adjustment handles 7 are operated to adjust up / down so that can be sheared to a constant height (so that the shearing blade 13 is horizontal in the left / right direction). Thereafter, the engine 14 is started, and the operator pulls the body forward while walking the passage in the cultivation house by the rope 27 or the like for towing, so that the body travels. Then, the onion seedlings of the seedling box p for 2.5 seedlings are sheared at a predetermined height by the shearing blade 13 in the left-right direction, and the portion sheared by the pressurized air from the air nozzle 16 is collected in the storage bag 19. To go. Then, when reaching the end of the cultivation house, the left and right moving body 11 is moved right and left and the shearing blade frame 22, that is, the rotating portion 23 is rotated around the shearing blade rotating shaft 21 in order to perform the shearing work of the next next step. Rotating to the opposite side, the shear blade frame 22 by the fixing leaf spring 24
That is, the fixing of the rotating portion 23 is released, and the shearing blade frame 22, that is, the rotating portion 23 is fixed to the machine frame by the fixing leaf spring 24 on the right and left opposite sides. Then, the operator pulls the body by the towing rope 27 or the like to cause the machine to run in a direction opposite to the previous stroke. Then, the left and right traveling wheels 2 are straddled by the shearing blade 13 in the left and right direction, and the remaining 2.5 seedling boxes p for which the shearing operation was not performed in the previous process among the five seedling boxes p.
The rush seedling is sheared at a predetermined height, and the air nozzle 1
The portion sheared by the pressure wind from 6 is collected in the storage bag 19. In this way, the shearing work of the portion straddled by the left and right traveling wheels 2 in the reciprocating traveling of the body is performed. Subsequently, when performing shearing work on another unworked portion adjacent in the left-right direction, the four running wheels 2 are steered at right angles to the left-right direction, and the aircraft is pushed or pulled in the left-right direction to obtain the desired. And the direction of the traveling wheel 2 is returned to the original position. If necessary, the left and right moving body 11 is moved left and right or the shearing blade frame 22 is rotated around the shearing blade rotating shaft 21 in the front and rear opposite directions, so that the direction and the left and right position of the shearing blade 13 are changed. And the shearing blade frame 22 is fixed to the machine frame by the fixing leaf spring 24. Then, the worker pulls the rope 27 for towing.
The aircraft is driven by such means as performing shearing work. Hereinafter, the shearing operation of the leaves h of the onion seedlings is similarly performed.
When one body is towed by one worker by the left and right towing ropes 27, the rotating portion 23 is biased to one of the left and right with respect to the left and right traveling wheels 2, so that the load of the left and right traveling wheels 2 is shared by the body. Therefore, it is preferable to tow the body while walking in front of the traveling wheel 2 on the side where the rotating portion 23 is deviated so that the body is easily towed.

As described above, the plant shearing machine 1 rotates the rotating portion 23 provided with the shearing blade 13 at the end of the cultivation house so that the shearing blade 13 faces the front and rear opposite sides around the shearing blade rotating shaft 21. At the same time, the shearing blade 13 is moved left and right with respect to the machine frame by the left and right moving body 11 so that the shearing blade 13 passes through the unworked position, and the body is returned to travel. The left and right positions can be changed, and the aircraft can be reciprocated to perform efficient shearing work.

Further, since the shearing blade 13 is configured to shear the plant between the left and right running wheels 2, the height at which the plant is sheared is stabilized, and the plant can be sheared to an appropriate height. Further, since the shearing blade 13 is supported by a plurality of left and right frames 4 arranged vertically between the left and right traveling wheels 2, the distance (tread) between the left and right traveling wheels 2 is increased by the extension of the left and right frames 4. Even if the left and right frames 4 are bent largely due to the weight of the shearing blades 13 and the like in the vertical direction, sufficient rigidity for supporting the shearing blades 13 in the vertical direction can be obtained. 13 can appropriately stabilize the shearing height of the plant, and can perform shearing work in a wide area in one travel of the body, thereby improving the work efficiency of the shearing work.

A rotating part 23 provided with the traveling wheel 2 and a shearing blade 13 for shearing the plant is provided so as to be rotatable around a shearing blade rotating shaft 21, and the left and right moving body 11 is used to move the right and left with respect to the machine frame. Since it is movably provided and the shearing blade rotating shaft 21 is disposed at the center of gravity of the rotating portion 23 in plan view,
The rotating space required for rotating the rotating portion 23 around the shearing blade rotating shaft 21 can be reduced, so that even at the end of the cultivation house, the wall or the like of the house can be easily rotated without obstruction. The shearing operation of the plant can be performed by reciprocating the airframe, and the shearing operation can be performed efficiently. Also,
During rotation, the rotating portion 23 can be firmly supported only by being suspended from the machine frame by the shearing blade rotating shaft 21, so that the rotating structure of the rotating portion 23 can be simplified, and the weight and cost can be reduced. Since the body becomes lighter, the operator can easily pull the body to travel on a desired course, and can perform the shearing work efficiently.
Further, since the shearing blade rotating shaft 21 is arranged at the position of the center of gravity of the rotating portion 23, the operator can rotate the rotating portion 23 with a small force, so that this rotating operation can be easily performed. The shearing operation can be performed efficiently. During the shearing operation, the shearing blade frame 22 and the fixing leaf spring 24 are used.
Are engaged with each other to form a front view (see FIG. 1) composed of the left and right frames 4, the shearing blade frame 22, the left and right moving body 11, the shearing blade rotating shaft 21, and the upper and lower frames 6. In one view), the rotating portion 23, that is, the shearing blade 11 is supported by the frame-shaped frame, and the supporting rigidity of the shearing blade 13 can be sufficiently obtained, so that the shearing height of the plant by the shearing blade 13 is appropriately stabilized. The shearing operation can be performed over a wide area in one stroke of the body traveling, thereby improving the working efficiency of the shearing operation.

Further, the left and right movement of the rotating portion 23 by the left and right moving body 11 or the rotation about the shearing blade rotating shaft 21 causes the shearing blade frame 22 and the fixing leaf spring 24 to engage and rotate. Since the section 23 can be fixed to the machine frame side so as not to move, the operator can change the direction and the left / right position of the shearing blade 13 by moving the rotating section 23 left or right or rotating the rotating section 23. 23 can be fixed so as not to move,
Since the operator does not need to perform a special fixing operation different from the left-right movement operation or the rotation operation, for example, a fixing operation using a tightening screw or a pin, the operation of fixing the rotation unit 23 can be easily performed. Shearing work can be performed efficiently.

Further, since the shearing blade 13 and the plurality of traveling wheels 2 are provided, and all of the traveling wheels 2 can be steered at right angles to be directed in the same direction in the left-right direction, the shearing is performed at the end of the cultivation house. The body can be moved left and right with all of the traveling wheels 2 directed in the left and right direction so that the blade 13 passes through the unworked position, and the left and right positions of the shearing blade 13 can be easily changed without turning the entire body. Even at the end of the cultivation house, the body of the cultivation house can be easily moved right and left in a small space without disturbing the walls of the house, and then all directions of the traveling wheels 2 are steered back to the original direction. And the aircraft can travel, and shearing work can be performed efficiently. In addition, since the operator can push or pull the machine that is long in the left and right direction and run it in the left and right direction, it can not only run at the entrance and exit of the cultivation house and narrow passage for transportation etc., but also work This makes it easier for the user to push or tow the airframe, thereby facilitating the work of transporting the airframe.

Further, since the distance between the left and right running wheels 2 can be changed and adjusted by expanding and contracting the left and right frames 4, the arrangement of parts where plants are not cultivated due to the size and shape of the cultivation house. Even if the size and the size of the cultivation space are different, the airframe can be run, and versatility in the shearing work of the plant can be obtained.

The left and right towing ropes 27 provide:
The worker can perform the shearing work by himself while walking in a place where the seedling raising box p is not laid, and the left and right traveling wheels 2
Can be moved toward the front side, so that the aircraft can proceed smoothly. Although the embodiment of the present invention has been described in detail with respect to a plant shearing machine in which an operator pushes and travels an airframe, a self-propelled type that is driven and driven by power of an engine or the like may be used.

Although the shearing blade 13 in the embodiment of the present invention has a structure driven by an engine,
The present invention is not limited to this.

[Brief description of the drawings]

FIG. 1 is a front view showing a plant shearing machine.

FIG. 2 is a plan view showing a plant shearing machine.

FIG. 3 is a side view showing a plant shearing machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Plant shearing machine, 2 ... Running wheel, 2a ... Steering axis, 4 ... Left and right frame, 5 ... Left frame connecting plate, 6 ... Upper and lower frame, 11 ... Left and right moving body, 13 ... Shearing blade, 21 ... Shearing Blade rotating shaft, 22: shearing blade frame, 23: rotating portion, 24
… Fixed leaf spring

Claims (3)

[Claims] 1. A traveling body 2 for traveling the body while contacting the ground is provided, and a rotating part 23 provided with a shearing blade 13 for shearing a plant is provided rotatably about a vertical rotating shaft 21 and is provided on the machine frame. A plant shearing machine which is provided so as to be able to move left and right with respect to each other, and wherein the turning shaft 21 in the vertical direction is disposed at the center of gravity of the turning part 23 in plan view. 2. The lateral movement or rotation of the rotation unit 23 causes
The engaging member 24 provided on the machine frame side and the engaged member 22 provided on the rotating portion 23 are engaged to be fixed to the machine frame side so that the rotating portion 23 does not move. The plant shearing machine according to claim 1, wherein 3. A plant shearing machine comprising a shearing blade 13 for shearing a plant and a plurality of running wheels 2 for running the body, wherein all of the running wheels 2 can be steered in the same direction. .