JP2020068733A - Seedling box arranging machine - Google Patents

Abstract

To provide seedling box arranging machines that can work smoothly even if the ground is not prepared.SOLUTION: A seedling box arranging machine comprises a traveling machine body equipped with front wheels and rear wheels, a transport frame extending in the traveling direction of the traveling machine body and mounted on the traveling machine body in an inclined state in which the front side is lowered, a transporting conveyer traveling a seedling box mounted on the upper side of the transport frame downward, and a sliding plate sliding the seedling box transported to the bottom of the transport frame down to the ground, further comprising a steering mechanism that steers the front wheels with a steering wheel that is arranged on the rear side of the traveling machine body, the steering mechanism being configured such that the steering angle of one of the right and left front wheels is larger than the steering angle of the other one of the right and left front wheels with respect to the steering operation of the one of the right and left, and the weight balance of the machine body, which is supported by the front wheels and the rear wheels respectively, being set to be larger at the front wheel side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seedling box arranging machine used to assist the work of arranging a large number of seedling boxes on the ground.

  When raising seedlings in rice, put them into a seedling raising machine in a state where multiple seedling boxes that have been sown are placed in a seedling growing machine, and after germination, move the seedling boxes to a greenhouse and leave the seedlings for several days while illuminating the seedlings. Let it grow. At this time, it is necessary to arrange the seedling boxes piled up in the seedling growing machine one by one on the ground in the greenhouse, but the seedling box after emergence has one soil because the soil in the box absorbs moisture. The seedling box weighs 6 to 7 kg, and the work of manually arranging the seedling boxes on the ground is a labor that requires bending the waist. The seedling box arranging machine is widely used as a work machine that assists manual seedling box arranging work to reduce the labor.

  In a conventional seedling box arranging machine, a carrier box for a seedling box is extended along the moving direction of a machine body equipped with wheels, and this carrier frame is a slanting state along the moving direction of the machine body, and a plurality of seedling boxes are arranged. The boxes can be transported in a state of being arranged in a plane. An endless conveyor belt is movably mounted on the conveyor frame along the conveyor frame, and a slide plate is provided at the lower end of the conveyor frame so that its tip contacts the ground.

  In such a seedling box arranging machine, the seedling boxes are manually placed on the conveyor belt from the upper end side of the conveyor frame, and the plurality of seedling boxes arranged in a plane on the conveyor frame are driven by the conveyor belt. It moves downward and slides on the sliding plate one after another and is lined up on the ground. At this time, the fuselage of the seedling box arranging machine moves toward the opposite side of the transporting direction of the seedling boxes due to the reaction force caused by the next seedling box being pressed against the grounded seedling box. To do. With this, the seedling box arranging machine can sequentially move the seedling boxes placed on the transport frame downward, and move the seedling boxes in the opposite direction to sequentially arrange the plurality of seedling boxes on the ground ( See Patent Document 1 below).

JP-A-2002-45041

  The conventional seedling box arranging machine described above can relatively smoothly arrange the seedling boxes straight on the ground when the ground in the greenhouse is flat. However, when the seedling box arranging work using the seedling box arranging machine is performed on soft ground or uneven land, the seedling box arranging machine may not move smoothly. Therefore, it is indispensable to level the ground before the work, and there is a problem that the preparatory work for leveling the ground before performing the seedling box arranging work is troublesome.

  In order to smoothly perform seedling box arranging work by the seedling box arranging machine even on soft ground or rough terrain, it is necessary to increase the contact area of the front wheels near the center of gravity of the machine body. Further, by increasing the ground contact area of the front wheels, it is possible to obtain a traveling force for moving the machine body without increasing the output of the motor for driving the conveyor belt in the work in the leveled state. However, if the ground contact area of the front wheels that steer the aircraft is increased, the turning performance during movement of the aircraft deteriorates, and the movement performance during manual movement of the seedling box arranging machine has a problem.

  The present invention has been proposed to address such a situation. In other words, in a seedling box arranging machine that arranges seedling boxes on the ground such as in a greenhouse, by providing a seedling box arranging machine that can smoothly perform work even when the ground is not prepared, the ground is grounded. It is an object of the present invention to reduce the time and effort of the preparatory work to be performed and to obtain good moving performance even when the ground contact area of the front wheels for steering the airframe is increased.

In order to solve such a problem, the present invention has the following configurations.
A manually propelled traveling machine body having left and right front wheels and left and right rear wheels and movable back and forth, and installed on the traveling machine body extending along a moving direction of the traveling machine body in an inclined state in which the front side is lowered. A transport frame, a transport conveyor that transports the seedling box placed on the upper side of the transport frame downward, and a slide plate that slides the seedling box transported to the lower end of the transport frame down to the ground. A seedling box arranging machine for sequentially arranging the seedling boxes in parallel on the ground while moving the traveling machine body backward by the reaction force caused by the seedling boxes transported by the transport conveyor being pressed against the seedling boxes grounded on the ground, A steering mechanism arranged to steer the front wheels by means of a steering handle arranged on the rear side of the traveling machine body, wherein the steering mechanism has a steering angle of one of the left and right front wheels with respect to one of the left and right steering operations. Is on the left Larger than the steering angle of the other of the front wheels, the front body weight balance wheel and the rear wheel support respectively, seedling box lined machine, characterized in that the front wheel side is set to be larger.

  According to the seedling box arranging machine of the present invention having such characteristics, in the seedling box arranging operation for arranging the seedling boxes on the ground such as in a greenhouse, the work can be smoothly performed even if the ground is not prepared. Therefore, it is possible to reduce the time and effort required for preparatory work for leveling the ground. Further, even when the ground contact area of the front wheels that steer the machine body is increased so that the work can be smoothly performed even when the ground is not level, it is possible to obtain good movement performance.

It is a side view of the seedling box arrangement machine which concerns on embodiment of this invention. It is a rear view of the seedling box arrangement machine which concerns on embodiment of this invention. It is the top view which showed the conveyance frame of the seedling box arrangement machine. It is a top view showing a traveling machine and a steering mechanism of a seedling box arrangement machine. It is explanatory drawing which showed the right steering state of the steering mechanism. It is explanatory drawing which showed the left steering state of the steering mechanism.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same reference numerals in different drawings indicate the parts having the same functions, and redundant description in each drawing will be appropriately omitted.

  As shown in FIGS. 1 and 2, the seedling box arranging machine 1 includes a traveling machine body 2, a carrying frame 3, a carrying conveyor 4, and a sliding plate 5. The traveling machine body 2 is provided with a left and right front wheel 21 and a left and right rear wheel 22 on a machine body frame 20 so that the machine body 20 can be moved forward and backward by hand. Here, the left and right front wheels 21 are wider than the rear wheels 22 in order to increase the ground contact area. Further, in order to further increase the ground contact area of the front wheels 21, a plurality of one front wheel 21 may be formed as a multiple wheel.

  As shown in FIG. 3, the transport frame 3 includes a plurality of vertical frames 30 and a horizontal frame 31 connecting the vertical frames 30, and the plurality of vertical frames 30 in the transport frame extend along the moving direction of the traveling machine body 2. It is mounted on the traveling body 2 in a tilted state with the front side lowered. A carry-in frame 32 for carrying in the seedling box is provided on the upper end side of the transport frame 3, and a slide plate 5 is provided on the lower end side of the transport frame 3.

  The transport frame 3 is equipped with a transport conveyor 4. The conveyor 4 includes an endless conveyor belt 40 movably arranged along the vertical frame 30 of the conveyor frame 3 and an electric drive mechanism (electric motor, sprocket, etc.) for driving the conveyor belt 40. ing. The transport conveyor 4 transports the seedling box W placed on the upper side of the transport frame 3 downward along the vertical frame 30 of the transport frame 3.

  One end side of the sliding plate 5 is attached to the front end side of the transfer frame 3 and the other end side is arranged so as to be able to contact the ground G, and the seedling box W transferred to the lower end of the transfer frame 3 slides on the ground G. It has the function of unloading.

  A plurality of seedling boxes W placed on the carrying frame 3 can be arranged side by side, and a plurality of seedling boxes W can be arranged horizontally in the left and right and front and back so that they can be carried downward at the same time. The left-right width of the carrying frame 3 is appropriately set according to the number of seedling boxes W to be arranged, and depending on the set left-right width, 3 rows or 4 rows of seedling boxes can be carried at the same time.

  Such a seedling box arranging machine 1 moves the traveling machine body 2 rearward by the reaction force caused by the seedling box W transported by the transport conveyor 4 being pressed against the seedling box W grounded on the ground G, while moving the traveling body 2 backward. The seedling boxes W can be sequentially arranged in parallel. According to this, the worker only has to put the seedling box W, which has been transported by a transport vehicle, on the transport frame 3 of the seedling box arranging machine 1 without bending his or her waist, so that the worker can bend the waist and perform heavy labor. The seedling box arranging work that used to be possible can be proceeded more comfortably.

  FIG. 4 shows the steering mechanism 6 of the seedling box arranging machine 1. The steering mechanism 6 is mounted on the traveling machine body 2 and performs a steering operation of the left and right front wheels 21 having a large wheel width by a steering handle 60 provided on the rear side of the traveling machine body 2.

  The specific structure of the steering mechanism 6 will be described. The steering handle 60 is pivotally supported by a vertical shaft 61 supported by the traveling machine body 2 and is swingably provided to the left and right. One end side of the first steering rod 62 is pivotally supported at the left and right ends of the body 60A. The other end of the first steering rod 62 is pivotally supported on the other end of the second steering rod 63 whose one end is fixed to the axle 21A of the front wheel 21 at a predetermined angle. 63 and the axle 21A are rotatably supported around a steering shaft 64 which is a vertical axis. As described above, the steering mechanism 6 is provided with the link mechanism including the two steering rods (the first steering rod 62 and the second steering rod 63) on each of the left and right front wheels 21.

  According to such a steering mechanism 6, when steering to the right as shown by the dashed line in FIG. 5, the steering angle θ1 of the right front wheel 21 becomes larger than the steering angle θ2 of the left front wheel 21, When steering to the left as shown by the dashed line in FIG. 6, the steering angle θ2 of the left front wheel 21 becomes larger than the steering angle θ1 of the right front wheel 21. As a result, when the direction of the aircraft is changed to the left or right by steering when the aircraft is turning, the steering angle of the wheels that turn outside will be smaller than the steering angle of the wheels that turn inside, and will match the running trajectory of the outside wheels that have a large turning radius. Since the rudder angle of the outer wheels is adjusted as described above, the lateral shift of the outer wheels can be eliminated and the direction of the airframe can be smoothly changed. Therefore, even if the ground contact area of the front wheels 21 that steer the aircraft is increased so that the work can be smoothly performed even when the ground is not level, good movement performance is obtained. be able to.

  In addition to this, as shown in FIG. 1, in the seedling box arranging machine 1, the weight balance of the body supported by the front wheels 21 and the rear wheels 22 is determined by the support gravity R1 on the front wheels 21 side and the rear wheels 22 side. The support weight is set to R2, and the front wheel 21 side is set to be larger so that R1> R2. According to this, since a larger weight balance is applied to the front wheels 21 that are steered by the steering mechanism 6 described above, the steering operation of the front wheels 21 described above is transmitted to the ground more efficiently. This makes it possible to smoothly change the direction of the aircraft.

  According to such a seedling box arranging machine 1, even if the ground such as in a greenhouse is not ready, the seedling boxes can be arranged straight on the ground while moving the machine linearly. Even when the machine body of the box arranging machine 1 is manually pushed while turning, good steering performance can be obtained by the steering mechanism 6 described above.

  Since this seedling box arranging machine 1 can smoothly perform the work even when the ground is not prepared, it can reduce the time and effort for the preparation work for preparing the ground, and at the same time, it can be applied to the fields on uneven terrain. Even in the simple house used, seedling boxes can be smoothly arranged to grow seedlings. Furthermore, since good moving performance can be obtained when moving the seedling box arranging machine 1 inside or outside the house, it is possible to improve work efficiency.

  Note that the seedling box arranging machine 1 of the present invention can be provided with a mechanism for bending the leading end side of the transport frame 3 and the supporting end side of the sliding plate 5 upward, as in the conventional technique. By providing such a mechanism, it is possible to smoothly perform manual pushing movement of the machine body when not in operation.

1: Seedling box arranging machine, 2: Traveling machine, 3: Transport frame,
4: Transport conveyor, 5: Sliding plate, 6: Steering mechanism,
20: Airframe frame, 21: Front wheels, 21A: Axle, 22: Rear wheels,
30: vertical frame, 31: horizontal frame, 32: carry-in frame, 40: conveyor belt,
60: steering wheel, 60A: operating body,
61: vertical axis, 62: first steering rod,
63: Second steering rod, 64: Steering shaft, W: Seedling box, G: Ground

In order to solve such a problem, the present invention has the following configurations.
A manually propelled traveling machine body having left and right front wheels and left and right rear wheels and movable back and forth, and installed on the traveling machine body extending along a moving direction of the traveling machine body in an inclined state in which the front side is lowered. A transport frame, a transport conveyor that transports the seedling box placed on the upper side of the transport frame downward, and a slide plate that slides the seedling box transported to the lower end of the transport frame down to the ground. A seedling box arranging machine for sequentially arranging the seedling boxes in parallel on the ground while moving the traveling machine body backward by the reaction force caused by the seedling boxes conveyed by the conveyor being pressed against the seedling boxes grounded on the ground, A steering mechanism arranged to steer the front wheels by means of a steering handle arranged on the rear side of the traveling machine body, wherein the steering mechanism has a steering angle of one of the left and right front wheels with respect to one of the left and right steering operations. Is on the left Larger than the steering angle of the other of the front wheels, the body weight balance in which the rear wheel and the front wheel support, respectively, together with the front wheel side is set larger, the ground contact area of the front wheel A seedling box arranging machine, characterized in that it is larger than the ground contact area on the rear wheel side, and the distance from the ground contact position at the tip of the sliding plate to the front wheel is longer than the distance from the front wheel to the rear wheel .

Claims (3)

A manually propelled traveling machine body having left and right front wheels and left and right rear wheels and movable back and forth, and installed on the traveling machine body extending along a moving direction of the traveling machine body in an inclined state in which the front side is lowered. A transport frame, a transport conveyor that transports the seedling box placed on the upper side of the transport frame downward, and a slide plate that slides the seedling box transported to the lower end of the transport frame down to the ground. A seedling box arranging machine for sequentially arranging the seedling boxes in parallel on the ground while moving the traveling machine body backward by the reaction force caused by the seedling boxes conveyed by the conveyor being pressed against the seedling boxes grounded on the ground, ,
A steering mechanism for steering the front wheels by a steering handle arranged on the rear side of the traveling body is provided.
The steering mechanism has a steering angle of one of the left and right front wheels larger than a steering angle of the other front wheel of the left and right with respect to a steering operation on one of the left and right sides.
A seedling box arranging machine, characterized in that the weight balance of the body supported by each of the front wheels and the rear wheels is set so that the front wheels are larger.   The seedling box arranging machine according to claim 1, wherein the steering mechanism is provided with a link mechanism including two steering rods on each of the left and right front wheels.   3. The seedling box arranging machine according to claim 1, wherein a distance from the ground contact position of the tip of the sliding plate to the front wheel is longer than a distance from the front wheel to the rear wheel.

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