JP3763627B2 - Seedling box arranging machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seedling box arranging machine that arranges seeded seedling boxes or seedling boxes sprouted after seeding on the ground.
[0002]
[Prior art]
Part of the present applicant is Japanese Patent Application No. 8-14520, and aims to improve the efficiency of the work of arranging seeded seedling boxes on the ground in order to grow seedlings until the seedlings have a certain size. A seedling box arranging machine was proposed. This seedling box arranging machine feeds a seedling box storage part that stores a plurality of seedling boxes in a stacked state, and a seedling box stored in the seedling box storage part, one by one from the bottom to the bottom. A seedling box feeding device and an elevating device for raising and lowering the seedling box housing portion are provided, and when the seedling box in the seedling box housing portion is fed by the seedling box feeding device, the seedling box is more than when the seedling box is not fed as in the case of movement The elevating device is controlled to lower the accommodating portion.
[0003]
[Problems to be solved by the invention]
Since the above-mentioned conventional seedling box arranging machine has lowered the seedling box housing part on the basis of the machine body, if the ground height is higher or lower than the reference value, the ground of the seedling box housing part when feeding the seedling box The height from was not appropriate, and the seedling boxes could not be arranged on the ground in good condition. In addition, when the plurality of seedling box accommodating parts are arranged in parallel on the left and right sides, the left and right widths are widened. Therefore, when the ground is inclined to the left and right, the right seedling box accommodating part and the left seedling box accommodating part are used as seedlings. There was a problem that the height from the ground of the seedling box housing part when the box was fed out was different.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is configured as follows. That is, the seedling box arranging machine according to the present invention includes a seedling box housing part for housing a plurality of seedling boxes in a stacked state, and a seedling box housed in the seedling box housing part in order from the lowest one. A seedling box feeding device that feeds down one by one, left and right lifting devices that are individually located on the left and right sides of the seedling box housing portion, and that individually raise and lower left and right ends of the seedling box housing portion, and left and right sides of the seedling box housing portion Left and right detection means for detecting the height of each part with respect to the ground, and when the seedling box feeding device feeds out the seedling box, the seedling box housing part is lowered until both the detection values of the left and right detection means reach a predetermined value. And a control device for controlling the operation of the left and right lifting devices.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be specifically described based on a seedling box arranging machine shown in the drawings.
[0006]
The seedling box arranging machine 1 travels on rails 5 and 5 by wheels 3, 3, 4 and 4 provided at the lower corners of the machine frame 2. The front wheels 3 and 3 are drive wheels, and the power of the travel motor M1 is transmitted to the axle 3a via the chain 6 (which is applied to the sprockets 6a and 6b). The rear wheels 4 and 4 are idle wheels and can freely roll on the rails 5 and 5. A traveling switch LS1 that is turned on each time the wheel rotates once is provided in the vicinity of the inside of the right idle wheel 4.
[0007]
In the seedling box housing frame 10 provided inside the machine frame 2, four seedling box housing parts 11,... Are formed in parallel on the left and right sides, and a plurality of seedling boxes C stacked on each seedling box housing part 11,. ,... Are accommodated with the longitudinal direction facing left and right. Lift guides 12 attached to the left and right sides of the seedling box housing frame 10 are respectively slidably fitted to the vertical guide rods 13 supported by the machine frame 2. The seedling box housing frame 10 is moved up and down along the guide bars 13,... By the left and right lifting devices 20 (L) and 20 (R).
[0008]
The elevating device 20 (L or R) has sprockets 25 and 25 attached to the front and rear portions of the elevating drive shaft 23 connected via the coupling 22 to the output shaft 21 of the elevating motor M2 (L or R). The free ends of the chains 26 and 26 wound around the sprocket are locked to the upper surface portion of the seedling box housing frame 10. Therefore, the seedling box housing frame 10 is in a state where the four corners are suspended by the chains 26. The length of each chain 26,... Is at least as long as the lifting stroke. The elevating drive shaft 23 is attached with a coil spring 27 that urges rotation to the side where the seedling box housing frame 10 is raised. For this reason, the rotational driving force at the time of raising the seedling box housing frame is small, and the lifting motors M2 (L) and M2 (R) can be made small.
[0009]
The lifting strokes of the left and right lifting devices 20 (L), (R) are determined by the rising switches LS2 (L), LS2 (R) and the lowering switches LS3 (L), LS3 (R) provided on the left and right, respectively. . The raising switch LS2 (L or R) is attached to the machine frame 2, and is turned on when the seedling box housing frame 10 is raised until the roller provided on the actuator comes into contact with the engagement piece 28 fixed to the seedling box housing frame 10. The lowering switch LS3 (L or R) is attached to the seedling box receiving frame 10, and the seedling box receiving part 10 is lowered until the sensor body 29 attached to the actuator contacts the ground. When it falls below a certain level, the actuator is driven and the switch is turned on. The lowering switches LS3 (L), LS3 (R) are detection means for detecting the height of the left and right portions of the seedling box housing parts 11,.
[0010]
At the lower part of the seedling box housing frame 10, rotary feeding tools 30 </ b> A, 30 </ b> B are provided as seedling box feeding devices on the front and rear sides with the seedling box housing portions 11,. These rotary feeding tools 30A and 30B are provided with three rod-like bodies 32, 32, 32 disposed at positions of 120 degrees with respect to the rotation drive shaft 31, and by driving the rotation drive shaft 31, The bodies 32, 32, 32 rotate intermittently by 120 degrees. The mechanism for driving the rotary feeding tools 30A and 30B transmits the rotation of the output shaft of the feeding motor M3 to the front feeding drive shaft 35A via the chain 34 (hanging on the sprockets 34a and 34b), and further the front feeding drive shaft 35A. The rotation is transmitted to the rear delivery drive shaft 35B by the pair of gears 36, 37 so as to be reversely rotated, and the front delivery drive shaft 35A and the rotation drive shaft 31 of the front rotation delivery tool 30A are connected to the chain 40 (sprockets 40a, 40b). And the rear drive shaft 35B and the rotary drive shaft 31 of the rear rotary feed tool 31B are connected by a chain 41 (hang on the sprockets 41a and 41b). Thus, when the feeding motor M3 rotates, the rotary feeding tools 30A and 30B rotate in the direction in which the rod-like body 32 located on the seedling box housing portion 11,... Side moves from top to bottom (the direction indicated by the arrow in FIG. 5). To do. LS4 is a seedling box feed switch that is turned on every time the rear feed drive shaft 35B rotates by 120 degrees.
[0011]
The rotary feeding tools 30A, 30B are located below the guide plates 43,... That regulate the front-rear position of the seedling box, and are provided in a state of protruding from the guide plate to the seedling box housing portion 11 side. And the cloth-like bodies 44 and 44 made from materials, such as nylon, are provided with the upper end fixed outside the seedling box housing part 11 and above the rotary feeding tools 30A and 30B, and the lower part thereof is the rotary feeding tool. It hangs on 30A and 30B.
[0012]
When the feeding motor M3 is in a stopped state, one rod-like body 32, 32 positioned inside each of the rotary feeding tools 30A, 30B is engaged with the front and rear edge portions Ca, Ca of the lowermost seedling box C from below. By doing so, each seedling box C,... Is held. When the rotary feeding tools 30A and 30B rotate from this state, the rod-like bodies 32 and 32 engaged with the edge portions Ca and Ca of the seedling box C are detached from the edge portions Ca and Ca, and the lowest seedling box C is self-weighted. It falls and is drawn downward. At this time, the cloth-like bodies 44, 44 are stretched as the rod-like bodies 32, 32 rotate, and the rod-like bodies 32, 32 are formed at the ends of the edge portions Ca, Ca in the shape of a cross-section hook. It becomes easy to come off from Cb and Cb. Immediately before the seedling box C is drawn downward, the next rod-like bodies 32, 32 are newly engaged with the edges Ca, Ca of the seedling box C, which is the lowest stage, to hold the seedling boxes C,. . The rotary feeding tools 30A and 30B rotate 120 degrees and stop. As described above, the rotary feeding tools 30A, 30B rotate intermittently by 120 degrees, thereby sequentially seedling boxes C,... Housed in the seedling box housing portions 11,. Pull down.
[0013]
A root cutting net feeding device 50 is provided on the front side of the machine body. This root cutting net feeding device 50 is rotatably attached to support arms 52, 52 so that the front end side is obliquely downward and rearward at the front ends of stays 51, 51 protruding forward from the front end of the machine frame 2. A net roll 53 around which a root cutting net 53a is wound is rotatably attached to the tip of the support arm. An intermediate portion of the support arms 52 and 52 and an upper surface portion of the seedling box housing frame 10 are connected via net roll lifting wires 56 and 56 arranged via pulleys 55 and 55, and the seedling box housing frame 10. Is raised, the net roll 53 is grounded, and when the seedling box housing frame 10 is lowered, the net roll 53 is lifted from the ground.
[0014]
When the root cutting net 53a pulled out from the net roll 53 is fixed so as not to move with soil or a seedling box, and the machine is run with the net roll 53 in contact with the ground, the net roll 53 rotates and the root cutting net 53a is fed out. The root cutting net 53a that has been fed out is laid on the ground.
[0015]
A net-like step 60 is provided at the rear of the machine casing 2. In addition, a tread board 62 is provided behind the fuselage to allow the seedling boxes on which people are placed on the ground to sink into the ground. The tread plate 62 is suspended by ropes 64, 64 at the tip ends of rotating arms 63, 63 that are supported by the rear portion of the machine casing 2 so as to be rotatable up and down. Moreover, the intermediate part of the rotation arms 63, 63 is connected to the rear end portions of the fixed arms 65, 65 fixed to the seedling box housing frame 10 by means of springs 66, 66. When it rises, the tread plate 62 also rises, and when the seedling box housing frame 10 descends to near the lower limit of the lifting stroke, it is lowered to a height at which the tread plate 62 rides on the seedling boxes arranged on the ground.
[0016]
Moving wheel mounting portions 69 and 69 are provided on the front lower portion and the rear lower portion of the body for mounting the moving wheels 68, respectively. In addition, square holes 71 and 71 for the jack 70 are provided on the left and right side portions of the machine body.
[0017]
Reference numeral 72 denotes a control box having a built-in control device for overall control of the seedling box arranging machine, and the control device 72a has a configuration shown in FIG. Reference numeral 73 denotes an operation box, which is provided with a seedling box arranging switch 73a and the like. Next, operation | movement of this seedling box arrangement machine is demonstrated (refer FIG. 8).
[0018]
As shown in FIG. 9, the seedling box arranging machine 1 is movably provided on rails 5, 5 laid on the ground in the nursery house 75, and seedlings are placed in the seedling box housing portions 11,. The work is started with the box inserted and the root cutting net 53a set. In the initial state, the travel switch LS1, the lowering switches LS3 (L), (S) and the seedling box feeding switch LS4 are ON, and the motors M1, M2, M3 are stopped.
[0019]
When the seedling box arranging switch 73a is turned on in the initial state, the lifting motor M2 rotates to the ascending side and the seedling box housing frame 10 is raised. When the seedling box housing frame 10 is raised to the upper limit position and the raising switches LS2 (L) and LS2 (R) are turned on, the lifting motors M2 (L) and M2 (R) are stopped. As the seedling box housing frame 10 is raised, the root cutting net roll 53 comes into contact with the ground, and the tread 62 floats from the ground.
[0020]
Next, the traveling motor M1 rotates and the aircraft travels. As the airframe travels, the net roll 53 rotates and the root cutting net 53a is fed out, and the fed root cutting net 53a is laid on the ground. When the wheels 3, 3, 4, and 4 make one rotation and travel for one seedling box, the travel switch LS1 is turned on and travel stops.
[0021]
Next, the lifting motors M2 (L) and M2 (R) rotate downward, and the seedling box housing frame 10 is lowered. When the lowering switches LS3 (L) and LS3 (R) are turned on, the lifting motors M2 (L) and M2 (R) are stopped. Since the left and right lifting motors are individually driven and stopped when the sensor body 28 of the lowering switch on the side contacts the ground, the seedling box housing frame 10 is always parallel to the ground even when the ground is inclined to the left and right. As the seedling box housing frame 10 is lowered, the root cutting net roll 53 rises, and the tread 62 is put on the grounding or on the seedling box already arranged on the ground.
[0022]
Next, the seedling box feeding motor M3 is driven to rotate the rotation feeding tools 30A and 30B. Thereby, the thing of the lowest step of the seedling box accommodated in each seedling box accommodating part 11, ... is drawn out and arranged on the ground. When the rotation feeding tools 30A and 30B are rotated 120 degrees and the seedling box feeding switch LS4 is turned on again, the seedling box feeding motor M3 stops and returns to the initial state. When the seedling box arranging switch 73a is turned on again, the next seedling box arranging operation is started.
[0023]
During the seedling box arranging operation or in the initial state, a person gets on the tread board 62 and puts the seedling box into the ground. At this time, the net roll 53 is in a floating state and has moved backward from the position at the time of travel, so that the root cutting net 53a is in a slack state. For this reason, the seedling box can be embedded in the ground without the root cutting net 53a becoming an obstacle. When the seedling grows up to a certain size and picks up the seedling box from the ground, the root extending from the seedling box into the ground is cut by the root cutting net 53a by shifting the seedling box with respect to the ground.
[0024]
When the seedling box arrangement work for one stroke is completed, the moving wheels 68, 68 are mounted on the front and rear moving wheel mounting portions 69, 69 and moved to the next stroke. When the moving wheels 68 are mounted, it is preferable to insert the square shaft portion 70a of the jack 70 into the left or right square hole 71 to jack up the left and right sides of the machine body.
[0025]
In the above description, the configuration in which the left and right portions with respect to the traveling direction are individually raised and lowered has been described.
[0026]
【The invention's effect】
As described above, the seedling box arranging machine according to the present invention controls the operation of the left and right lifting devices so that the seedling box housing part descends until both the detection values of the left and right detection means reach a predetermined value. Thus, when the seedling box is fed out from the seedling box housing part, the seedling box housing part is always parallel to the ground, so that the seedling box can be satisfactorily arranged on the ground.
[Brief description of the drawings]
FIG. 1 is a side view of a seedling box arranging machine.
FIG. 2 is a side view in which a part of the seedling box arranging machine is omitted.
FIG. 3 is a plan view of a seedling box arranging machine.
FIG. 4 is a front view of a seedling box housing frame.
FIG. 5 is a side sectional view of the seedling box housing frame.
FIG. 6 is a transmission mechanism diagram.
FIG. 7 is a block diagram of a control device.
FIG. 8 is a flowchart of seedling box arrangement work.
FIG. 9 is a diagram illustrating a work situation by the seedling box arranging machine.
[Explanation of symbols]
C Seedling box LS3 (L) Left down switch (detection means)
LS3 (R) Right lower switch (detection means)
DESCRIPTION OF SYMBOLS 1 Seedling box arrangement machine 2 Machine frame 3 Drive wheel 4 Free wheel 10 Seedling box accommodation frame 11 Seedling box accommodation part 20 (L) Left lifting device 20 (R) Right lifting device 30A, 30B Rotation feeding tool (seedling box (Feeding device)
72a Control device

Claims (1)

A seedling box receiving section for storing a plurality of seedling boxes in a stacked state, a seedling box feeding device for feeding the seedling boxes stored in the seedling box storing section one by one downward from the lowest one, and Left and right lifting devices that are located on the left and right sides of the seedling box housing part and that individually raise and lower the left and right ends of the seedling box housing part, When the detection means and the seedling box feeding device feed out the seedling box, the operation of the left and right lifting devices is controlled so that the seedling box housing part is lowered until both the detection values of the left and right detection means reach a predetermined value. A seedling box arranging machine, comprising:

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