JPH1189434A - Seedling tray ground-treatment machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure exact and smooth transfer of a seedling tray to the longitudinal conveyer in a shortened time by circularly swinging the seedling tray upward in the rear after hooking the seedling tray by swinging a hook device back and forth and allowing the conveyer to follow the unevenness of the ground surface, as the height of the hooking device is set by using the support wheel. SOLUTION: This seedling tray ground treatment machine is equipped with the working and running machine body, the longitudinal conveyer 18 extending from the working and running machine body with an inclination downward in the front direction and the tray-picking up mechanism 11 arranged in front of the longitudinal conveyer 18, in addition, the front frame 51 of the tray- picking up mechanism 11 is mounted to the support frame 41 for the longitudinal conveyer 18 so that it may be freely swingable around the horizontal axis. This front frame 51 is equipped with a hooking device that hooks the periphery Na of a seedling tray N spread on the ground and lifts up the tray by circularly swinging around the upper part upward in the rear and with supporting wheel 67 for setting the height so that the hooking device may come down close to the ground surface at its bottom.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling box ground treatment machine for collecting seedling boxes spread on the ground.

[0002]

2. Description of the Related Art In the seedling raising work of rice and vegetables, after germination, seedling boxes are arranged in a house (cured house) in units of several hundred to 1,000 sheets to perform greening and / or hardening treatment. Techniques for mechanization have been developed for efficient collection on narrow premises. As a technique to deploy and collect seedling boxes,
There is one disclosed in JP-A-7-107817. This technology is a traveling device that moves the aircraft back and forth,
A seedling box carrying unit on which a seedling box cart is placed, a seedling box transfer device that can selectively transfer a seedling box from the ground to the machine and a seedling box from the machine to the ground, and a seedling box on the machine A seedling box loading / unloading device that can selectively load the seedling box cart on the platform mounting section and lower the seedling box loaded in the seedling box truck on the platform mounting section onto the body. It is configured.

[0003]

In the prior art, the seedling box is picked up by providing a separating wire at the front end of the seedling box conveying device and inserting the separating wire between the ground and the seedling box. It is difficult to insert a wire rod under the seedling box, and it is extremely difficult to collect a plurality of seedling boxes at the same time.

[0004] Therefore, it is conceivable to arrange a hook in front of the seedling box transporting device and hook the periphery of the seedling box from below with the hooking tool. It is difficult to expect the seedling box to be picked up, and if there is an uneven seedling box, it may not be possible to engage.In addition, the lifting device will be raised vertically after stopping the advancement of the seedling box transport device. However, it is not smooth and takes time.

It is an important object of the present invention that the seedling box is hooked by swinging the hook back and forth and then swinging upward and backward by an arc so that the seedling box can be reliably transferred to the front and rear transport means. An object of the present invention is to provide a seedling box-to-ground treatment machine which can be performed in a short time and can be performed while following the unevenness of the ground with a support wheel. Another object of the present invention is to reduce the load applied to the support wheel by a damper or a spring, to reduce the weight of the support wheel, etc., and to allow the support wheel, hooking device, etc. to float. To provide a box-to-ground treatment machine.

[0006]

A first concrete means for solving the problems in the present invention is a work traveling machine body A2, a front-rear transportation means 18 inclined forward and downward from the work traveling machine body A2, A box pick-up mechanism 11 disposed in front of the transport means 18, and a front frame 51 of the box pick-up mechanism 11 is supported on the support frame 41 of the front-rear transport means 18 so as to be swingable about a horizontal axis 66. Frame 51
Next, a hook 22 for lifting the seedling box N by hooking the peripheral edge Na of the seedling box N spread on the ground from below and performing an arc movement rearward and upward around the upper portion, and a lower end of the hooking tool 22 are arranged close to the ground. That is, a supporting wheel 67 for setting the height as much as possible is provided.

As a result, the hook 22 is set at a height by the support wheel 67, and the lower end is disposed close to the ground, and moves while following the unevenness of the ground, and in this state, the seedling box N is securely hooked and smoothly. It is lifted in a short time by the operation and reliably transferred to the front and rear transport means 18. The second specific means for solving the problem in the present invention is, in addition to the first specific means, between the front frame 51 and the support frame 41.
The point is that a load reducing means 97 for reducing the load applied to the support wheel 67 is provided.

As a result, the load applied to the support wheel 67 is reduced, and the weight is reduced. The third specific means for solving the problem in the present invention is, in addition to the second specific means,
The load reducing means 97 is a damper 98 or a spring 99 that urges the front portion of the front frame 51 upward with respect to the support frame 41. As a result, the load reducing means 97 can be manufactured lightly and inexpensively.

The fourth concrete means for solving the problems in the present invention is the above-mentioned second concrete means. In addition to the second concrete means, the load reducing means 97 includes a wire winding machine 100 provided on the work traveling machine body A2. , Wire 10 of this wire winding machine 100
1 and an elastic body 102 provided between the front frame 51. Thereby, the front frame 51 and the hook 22 can be lifted by the load reducing means 97.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 17 to 24 show the entire seedling box unfolding and collecting machine which can be changed to a seedling box unfolding machine and a seedling box collecting machine as a seedling box to ground processing machine. The seedling box unfolding and collecting machine is configured to unfold and collect seven seedling boxes N on each side (may be one or a plurality of pieces other than seven) at the same time while forming a sidewalk in the center.

The seedling box unfolding and collecting machine comprises at least one working unit 3 and a main unit 4, and a box feeding mechanism 8 and a box collecting mechanism 9 can be selectively mounted on the main unit 4. By attaching the box supply mechanism 8 on the main unit 4, a seedling box unfolding machine is provided. By attaching the box collecting mechanism 9 on the main unit 4, a seedling box collecting machine (shown in FIG. 19) is provided. By itself, the number of seedling boxes N that can be placed thereon can be developed and collected, and can be used alone.

The working unit 3 is roughly divided into two sections, on which a seedling box N is placed so that distribution from the base position on one side in the left-right direction to the transfer position and collection from the transfer position to the base position are possible. A movable vertical and horizontal transport mechanism 5; a front and rear transport mechanism 6 that can place and transfer the seedling box N to the vertical and horizontal transport mechanism 5 and can transfer the loaded seedling box N to the ground; It has a box pick-up mechanism 11 for lifting the unfolded seedling boxes N onto the front-rear transport mechanism 6, and these are mounted on the work traveling machine A2.

In the following description, the front side is the side on which the seedling box N is deployed, and the working unit 3 moves backward when deployed and moves forward when collected. In addition, when the working unit 3 is connected to the main unit 4, the base position is a position on the delivery mechanism 7 of the main unit 4 which is arranged at an outer position on one side end of the vertical and horizontal transport mechanism 5. 3 is used alone, the seedling box N is positioned on one side end of the vertical and horizontal transport mechanism 5 and on one side end of the vertical and horizontal transport mechanism 5.
Will be artificially supplied and removed.

The work traveling machine body A2 has caster-type front wheels 26 and rear wheels 27 in the machine body 25, and can be pushed vertically and horizontally by hand. A projecting connecting portion 24 is formed so that the working unit 3 and the main unit 4 can be connected and the working units 3 can be connected side by side. A vertical and horizontal transport mechanism 5 is disposed on the machine body 25, and the vertical and horizontal transport mechanism 5
The vertical transfer means 5A for simultaneously moving the five seedling boxes N back and forth and delivering the same to the front and rear transfer mechanism 6, and is capable of ascending and descending with respect to the vertical transfer means 5A and descending to a position where the vertical transfer means 5A overlaps. Conveying means 5B for transferring the entire seedling box N and moving it laterally at the ascending position;
Lifting means 5C for raising and lowering B.

The vertical conveying means 5A is a belt conveyor in which seven sets are arranged. The vertical conveying means 5A supports three front and rear rotation shafts 28 via brackets erected on the machine body 25, and the rear rotation shaft 28 is driven by a motor 29. When driven, a belt 30 is wound around a pulley provided on each rotating shaft 28, and one seedling box N is placed and transported by two belts 30 arranged at an interval in the left-right direction. It has become.

The horizontal conveying means 5B is a roller conveyor having a length corresponding to the left and right length of the vertical conveying means 5A. A plurality of rollers 32 rotatable around the front-rear axis are supported on a conveyor frame 31. The plurality of rollers 32 use a rotation roller (a roller with a built-in motor) and are rotatable. A timing belt is wound around all the rollers 32, and all the rollers 32 are rotated synchronously by the rotation rollers.

The rollers 32 are all disposed between the belts 30 of the vertical conveying means 5A. When the rollers 32 are lowered, the rollers 32 are positioned lower than the upper surface of the belt 30.
0 and the stacking state is set in the height direction.
Can be transferred to and from the belt 30. Lifting means 5
C is an elevator type, and a mounting body 38 is erected on the rear part of the conveyor frame 31 of the horizontal conveying means 5B, and a guide column 33 made of a shaped steel material erected on the work traveling machine body A2.
A mounting body 38 is guided via a roller so as to be able to move up and down, and a chain 35 of an elevator driving tool 34 is connected to the mounting body 38.

The raising and lowering means 5C raises and lowers the roller 32 of the horizontal transport means 5B from a lowering position located below the upper surface of the belt 30 to an ascending position having an upper required height. When the seedling box N is lowered while the seedling box N is placed on the horizontal conveying means 5B, the seedling box N is transferred to the vertical conveying means 5A, and the seedling box N is lowered while the seedling box N is mounted on the vertical conveying means 5A. When the seedling box N is lifted from the position, the seedling box N is
B can move the seedling box N left and right.

A stopper 40 is provided on the square of the conveyor frame 31 of the horizontal transport means 5B via a vertical axis 39. By changing the direction of the stopper 40, the lateral and forward and backward transport of the seedling box N is guided. A small-diameter roller 36 is provided at the front of the conveyor frame 31 for facilitating delivery of the seedling box N to the front-rear transportation means 18.

The front-rear transport mechanism 6 includes front-rear transport means 18 on which the seedling boxes N can be placed and moved back and forth, and box aligning means 16 for aligning the expanded seedling boxes N. The front / rear conveying means 18 is formed by a belt conveyor, and a support frame 41 supports seven rows of belt conveyors 42. The belt conveyors 42 in each row have two pairs of front and rear (42A, 42) with a roller 44 interposed therebetween.
B) is linearly arranged, and is simultaneously driven by a motor 43 provided below the support frame 41,
The seven seedling boxes N can be placed and transported simultaneously in the front-rear direction. In the belt conveyors 42 in each row, two pairs (42A, 42B) are linearly arranged with the rollers 44 therebetween, but may be one long pair.

A pair of left and right grounding wheels 45 are provided below the support frame 41. The grounding wheels 45 can be adjusted in the front-rear position, and the inclination angle of the front-rear transportation means 18 can be changed by adjusting the front-rear position. The front end of the front-rear transporting means 18 can be arranged at a position close to the ground and at a floating position. Box aligning means 16 is attached to the front of the support frame 41 in correspondence with the belt conveyors 42 in each row. The box aligning means 16 includes the belt conveyor 4
Roller 5, which is located on the extension of 2 and can contact the support bracket 49 protruding forward from the support frame 41.
0 is provided rotatably.

The box aligning means 16 performs the original box aligning function when the seedling box is unfolded. The roller 50 is grounded, and is brought into contact with the seedling box N discharged to the ground. A plurality of seedling boxes N are pushed in the left-right direction to align the front and rear positions, thereby eliminating the front-to-back spacing with the already-developed seedling boxes N.
The upper surface of the roller 50 also serves to reduce the head when discharging the seedling box N from the belt conveyor 42 to the ground.

The box aligning means 16 also has a function of attaching the lifting divider 20 when collecting the seedling boxes. The lifting divider 20 is shown in FIGS. 7, 8, 13 and 21 and assists the box pick-up mechanism 11 by bending a metal round bar to form a hook-shaped member 20A. Are fixed to the cylindrical member 20B, and the cylindrical member 20B is loosely fitted to the roller 50.

The lifting divider 20 pushes the hook-shaped member 20A into the bottom of the seedling box N while grounding the front part thereof,
Even if the roots of the seedlings are stretched on the ground, the rear part of the seedling box N is strongly lifted, so that the hook-shaped member 20A does not cause mud clogging. The front and rear transport means 1
8 is pivotally connected to the machine main body 25 so as to be swingable about a horizontal axis, and is inclined forward and downward when the grounding wheel 45 is grounded;
It moves back and forth with the movement of the machine body 25 so that the box aligning means 16 and the box pick-up mechanism 11 can be operated.

The horizontal conveying means 5B and the front and rear conveying means 18
The conveyor frame 31 and the support frame 41 form a minimum required width in the left-right direction, and the seven seedling boxes N to be processed at the same time are processed in an adjacent state, and the width of the seedling boxes N approximates the width of the seven seedling boxes N. Width. Conveyor frame 31 and support frame 41
The vertical transport means 5 including the motor 29 within such a width of
A, the lifting / lowering means 5C, the motor 43 of the front / rear conveying means 18, and the like are arranged to form a compact working unit 3 in the left-right direction.

In FIGS. 1 to 12 and 21, the box pick-up mechanism 11 is attached to the left and right sides of the support frame 41 of the front-rear transport mechanism 6 and projects forward and upward.
1, a pair of hooks 22 provided on the front frame 51 in the left-right direction, forcible detaching means 56 forcibly flipping the hooks 22 rearward and upward to separate from the seedling box N, and Stopper means 57 for restricting the operation, retraction means 58 for forcibly releasing the stopper means 57 and retreating the hook 22, return means 59 for returning the forcible release means 56 to a position where the hook 22 is substantially suspended, And control means 65 for controlling the operation.

The front frame 51 is shaped like a letter when viewed from the side. The rear portion is rotatably supported by the support frame 41 via a horizontal shaft 66, and the front portion is formed by a square pipe 51A. The support wheel 67 is provided such that a support rod 67A is inserted into a fixed holder 67B on the outer surface of the front frame 51 and the height of the support wheel 67 is adjustable.

The height and posture of the hook 22 with respect to the ground can be adjusted by the support wheels 67.
1 swings around the horizontal axis 66, and the catching tool 22 can pick up the seedling box while following the unevenness of the ground. The support ring 67 is located behind the bar-shaped member 52 of the hooking tool 22, which will be described later, but is shifted in the left-right direction and does not interfere with the support ring 67A.
It is preferred that the seedling box N is located inside the side edge of the seedling box N so as not to abut on the seedling box N that is deployed adjacently.

A plurality of support plates 5 provided on the square pipe 51A
A horizontal horizontal shaft-like support shaft 54 is supported by 1B. The hooking tool 22 has a rod-shaped member 52 formed of a round bar or the like, and a boss member 53 formed by fixing a pipe member or the like on the upper part of the rod-shaped member 52. Or a plurality of members other than three), and a boss member 53 is loosely fitted to the support shaft 54 so as to be swingable independently, and a lower portion of each bar-shaped member 52 has a substantially L-shaped (hook-shaped) hook claw in side view. A portion 52A is formed.

The bar member 52 of the hook 22 has a hook 52
A is substantially grounded (state A in FIG. 1) and the front-rear transport mechanism 6
With the forward movement of the upper part, the lower hook part 52
A is hooked from below on the periphery Na of each seedling box N, and the seedling box N does not move in this hooked state (state B in FIG. 1), so that the seedling box N moves in an arc around the upper part, and the hook claw 52A Moves upward in a circular arc with the seedling box N hooked, and lifts the rear part of the seedling box N centering on the front part (FIG. 1,
2, 7). That is, the hook 22 raises the seedling box N using the component force of the forward power.

When the seedling box N is lifted (state C in FIG. 1), the hook 52A is located above the front of the front-rear transporting means 18 (or the box aligning means 16). Moves forward, the included angle between the bar-shaped material 52 and the peripheral edge Na decreases, and when the rod 52 swings over a certain angle, the peripheral edge Na
Abuts on the upper portion of the hook claw 52A, the hook claw 52A is disengaged from the peripheral edge Na by a lever action (natural detachment angle, two states in FIG. 1 and a solid line state in FIG. 9), and the seedling box N falls. It is placed on the front-rear transport means 18 (or the box aligning means 16).

Even if the seedling boxes N are laterally displaced in the front-rear direction and the vertical direction, of the plurality of hooks 22, those which can be hooked on the seedling box N are individually hooked and lifted sequentially, and furthermore, detachable. We gradually leave from what became. When the bar 52 interferes with the peripheral rib Nb below the periphery Na of the seedling box N, the bar 52 cannot engage with the periphery Na, but at least two rods 52 engage with the periphery Na. Then, the seedling box N is lifted.

The bar 52 is forcibly lifted up by the forcible release means 56 before the hook 52A is disengaged from the peripheral edge Na by the leverage action, that is, before the swing angle becomes the natural release angle. Departure (forced departure angle). The forcible detachment angle is such that the included angle of the hook 22 with respect to the perpendicular is, for example, 45 to 60 degrees, or preferably 50 to 55 degrees, and is in the range of states C to D in FIG. The leverage may occur during the separation.

The forcible detaching means 56 has a support shaft 5
4 includes a flip-up member 60 pivotally supported by 4 and having a lower part in contact with the hook 22 in a hanging posture, and a biasing member 61 for biasing the flip-up member 60 in the flip-up direction. The flip-up member 60 is formed by bending a round bar into a U-shape in a front view, and boss members at both ends thereof are loosely fitted to the support shaft 54, and a contact piece 60A of a triangle in a side view is fixed to one boss member. Has been
The urging member 61 is formed by loosely fitting a coil spring to a rod connected to the flip-up member 60.

The stopper means 57 has a stopper member 62 supported on a support plate 51B via a shaft 68. The stopper member 62 has a lower side engaged with a contact piece 60A of the flip-up member 60. The flip-up operation of the flip-up member 60 is restricted against the urging member 61. The stopper member 62 has an opening lever portion (opening engagement portion) 62A protruding rearward and downward, and is capable of abutting on the swinging rod-shaped material 52. During the separation angle, the stopper member 62 is swung to release the restriction of the flip-up member 60, and the flip-up member 60 can be flipped up by the urging member 61 (FIG. Dashed line state c).

The stopper member 62 is urged by a tension member (spring) 63 provided between the release lever portion 62A and the flip-up member 60 so as to abut against a stop member (pin) 69, whereby the contact piece It is elastically held at a position where it engages with 60A. The evacuation means 58
It has a release lever (release member) 58A and an arm 58B fixed to the support shaft 70 supported by the support plate 51B, and the release lever 58A is provided for each hooking tool 22, and the lower end thereof is L-shaped. The arm (58B) is provided only on the support shaft (70), and a short rotating arm of a motor (drive source) 64 is provided via a link (71). 64A. The motor 64 is mounted on the front frame 51 via a mounting base.

The release lever 58A swings back and forth by the rotation of the motor 64 in the counterclockwise direction (reverse rotation), and swings the release lever 62A in the direction of releasing the stopper when moving in the range shown in FIG. In the same manner as when rocked by the member 52, the stopper member 62 is rocked to release the regulation of the flip-up member 60, and the flip-up member 60 is flipped up.

The return means 59 is a set lever (set member) 59 fixed to the rotating shaft 72 supported by the support plate 51B.
A and an arm portion 59B, and a set lever 59A is provided for each hook 22 and its end is bent in an L shape so that it can engage with one side of the flip-up member 60. And only one arm portion 59B is provided on the rotating shaft 72, and is connected to a long rotating arm 64B of the motor 64 via a link 73. Note that the short rotating arm 64A and the long rotating arm 64B are, for example,
The output shaft of No. 4 is formed in a crank shape, or is formed by fixing arm members to both ends of the output shaft.

The set lever 59A swings reciprocally by the clockwise (forward) rotation of the motor 64, and swings the flip-up member 60 in a flipped-up state (state E in FIG. 1) downward to form a rod. The material 52 is returned by its own weight until it is in a substantially hanging posture. Due to the return swing of the flip-up member 60, the pull member 63 is pulled by the pull member 63, and the stopper member 62 also swings back and engages with the contact piece 60A to hold the flip-up member 60 at the set position.

The flip-up member 60 includes a rotating arm 64
When B moves over the range shown in FIG. 4, it overruns just below the support shaft 54 and moves to the maximum return position (position F in FIG. 4), whereby the contact portion 60A is
2 to the lower side to become engageable. Control means 65
Is a control unit (control logic unit) 95 and one of the motors 64.
A sensor 96 for detecting the rotational position, a sensor 65A for detecting that the hooking device 22 is in the hanging state by detecting that the lifting member 60 is in the set position, and a sensor for detecting that the hooking device 22 is in the flipping state E. It has a sensor 65B and the like for detecting that the lifting member 60 is at the flip-up position.

The motor 64 is set so as to rotate only one rotation by a switch operation.
Detects one reciprocation of a member driven by the sensor, and may detect the rotating arms 64A, 64B and the like.
One of the sensor 5B and the sensor 5B may be used, and the hook 22 may be directly detected. The sensors 96, 65
A, 65B, etc., proximity switch, limit switch,
Various things such as a photo sensor can be used.

Next, the picking operation of the seedling box N will be described mainly with reference to FIG.
A description will be given based on 10 to 12. The work unit 3 is opposed to the seedling boxes N arranged side by side, and a forward signal is sent to the work unit 3 by pressing the forward button. At this time, if the sensor 65A detects the flip-up member 60 or the sensor 65B does not detect the flip-up member 60, the hooking tool 22 is in a substantially hanging state A, and the working unit 3 is moved forward as it is. Then, the motor 64 is rotated forward by one through the control unit 95, the return means 59 is driven, the flip-up member 60 is swung downward by the set lever 59A, and the stopper means 57 is operated to move the flip-up member 60. It is held at the set position and detected by the sensor 65A.

When the hook 22 is set in the substantially hanging state A, the working unit 3 starts to move forward, the bar 52 is dragged, and the hook 52A is hooked on each of the unfolded seedling boxes N. Then, the seedling box N is lifted at the rear end around the front end, and the bar 52 swings to a certain angle while drawing an arc trajectory upward and rearward about the support shaft 54, and immediately before reaching the natural departure angle, the bar 52 Abuts against and releases the release lever portion 62A of the stopper member 62 (A in FIG. 10).
~ C).

When the stopper member 62 is released, the flip-up member 60 is shockedly flipped up by the resilience of the urging member 61, and the entire bar 52 is forcibly flipped up (A in FIG. 11). The hook claws 52A are detached from the seedling box N. As a result, the rear portion of the seedling box N is dropped onto the front / rear conveying means 18. In this way, the seedling box N is lifted by the plurality of hooks 22 corresponding to each seedling box N, transferred onto the front-rear transfer means 18, and transferred to the vertical and horizontal transfer mechanism 5 by the front-rear transfer means 18. Even if the seedling box N is poorly picked up, it is picked up by the lifting divider 20 that advances later.

After seeing that the seedling box N is completely placed on the front and rear transport means 18, press the forward button or use the sensor 65B.
After a set time from the detection of the flip-up member 60, the motor 64 is rotated forward by one, the return means 59 is driven, and the flip-up member 60 is pushed down by the set lever 59A (A in FIG. 12).
To C), returning the set-up member 60 to the set position after overrunning the flip-up member 60 (B to C in FIG. 11),
Is raised, the box pick-up mechanism 11 performs the seed box pick-up operation again.

When the collection of the required seedling box N is completed or when the working unit 3 is moved backward for some reason,
When the reverse button is pressed, the sensor 65A causes the flip-up member 60
Is detected, or the sensor 65B does not detect the flip-up member 60, the hook 22 is in the hanging state A. Therefore, when the work unit 3 is moved backward as it is, the rod 52 in the dragged state bites into the ground. Therefore, the motor 64 is reversed by one through the control unit 95,
The evacuation means 58 is driven.

The short rotating arm 64A swings the release lever 58A by reverse rotation to push the release lever portion 62A of the stopper means 57 (C in FIG. 10), and the stopper member 62
Is released and the flip-up member 60 is flipped up.
Are forcibly raised and retracted (A in FIG. 11). In addition,
If the unfolded seedling boxes N have irregularities or inclinations such as unevenness in the front-back direction, the hooking timing and lifting are performed by the hooks 22 corresponding to the seedling boxes N and by the plurality of rods 52. With only a slight difference in the timing, the hooking can be reliably performed, and each hooking tool 22 independently transfers the seedling box N to the front and rear transport means 18, so that each seedling box N is reliably picked up.

Further, even if there are irregularities on the ground, the height of the hooking tool 22 is corrected by the support wheel 67, and even if the seedling box N has unevenness in the vertical direction, the hooking tool 22 is hooked and the claw 52A is dragged. If it is grounded as described above, it can be hooked on all the seedling boxes N. Furthermore, since the hook 22 engages with and lifts the seedling box N by running power, no special actuator is required, and there is no movable part near the ground, so that no failure occurs.

Further, the flip-up member 60, the stopper member 62, the release lever 58A and the set lever 5
9A is provided corresponding to each of the seven sets of hooks 22,
The arm portions 58B and 59B, the sensor 96, and the motor 64 are common to all the sets, thereby reducing the number of actuators. It is necessary to provide the sensor 65A and / or the sensor 65B for each group. This is omitted for the purpose of cost reduction. The work unit 3 is moved forward, or the motor 64 is rotated forward by 1 to bring the hooking device 22 into a substantially hanging posture. When the vehicle is going backward, the reverse button is pushed to rotate the motor 64 by 1 reverse, and the hooking device 22 is flipped up. The unit 3 may be moved backward.

FIG. 14 shows a first example in which a load reducing means 97 is provided between the front frame 51 and the support frame 41. The load reducing means 97 is formed by a damper 98.
It is provided between the middle part of the front frame 51 and the front part of the support frame 41, and urges the front frame 51 upward to reduce the load applied to the support wheel 67. The damper 98 is preferably a gas damper, and may be a compression spring.

Since the load on the support wheel 67 is reduced,
It is not necessary to increase the strength of the axle, the support rod 67A, the holder 67B, etc., and a lightweight and inexpensive one can be used. FIG. 15 shows a second example of the load reducing means 97, in which a bracket 41A is protruded from the support frame 41, and the front frame 51 is pivotally supported on the upper part thereof via a horizontal shaft 66. A tension spring 99 is provided between the rear part and the middle part of the support frame 41 to serve as a load reducing means 97.

FIG. 16 shows a third example of the load reducing means 97, in which a wire winding machine 100 is provided on the rear side of the guide post 33 of the work traveling machine body A2 via a mounting stand. An elastic body 102 formed by a spring or the like is provided between the wire 101 of the (winch) 100 and the front frame 51. The wire winder 100 may be either an electric type or a manual type. However, the load applied to the support wheel 67 can be reduced by elastically raising the front frame 51 with the wire 101 and the elastic body 102.

The load reducing means 97 of the third example may connect the wire 101 to the upper end of the guide post 33 if it has only a load reducing function.
Is provided, and the wire 101 is further wound so that the front frame 51
Can be lifted, the hook 22 and the support wheel 67 can be lifted off the ground, and the work unit 3 can be easily moved and the hook 22 can be retracted upward.

The main unit 4 is shown in FIGS. 17 to 20 and 24 and has a delivery mechanism 7 at the front of the main traveling body B2.
And a box receiver support mechanism 12 at the rear, and a box supply mechanism 8 and a box collection mechanism 9 in the middle part thereof, which can be selectively used. The work unit 3 is connected to at least one of the left and right sides of the main unit 4 so as to be able to travel together. In the embodiment, the work unit 3 is paired on the left and right, and is the same or different on either side of the left or right work unit 3. The work units 3 for processing the number of seedling boxes N are connected in a side-by-side state, and both working units 3 transfer the seedling boxes N between the horizontal transport means 5B.

The main traveling body B2 includes a driving source such as an electric motor, a hydraulic pump, an air compressor,
An operation panel and the like are mounted, and the left and right crawler running units 77 are driven by a hydraulic motor. The self-propelled device 13B is provided so that the running and steering can be performed independently. The delivery mechanism 7 is disposed at the center of the pair of left and right working units 3, that is, at a base point on one side of the horizontal transport unit 5 </ b> B at the ascending position, and distributes the horizontal transport unit 5 </ b> B and the seedling box N one by one. And a feeding means 7B for moving the seedling box N between the distributing means 7A and a position on the rear side thereof.

The distributing means 7A includes a roller conveyor 82 having a plurality of rotation rollers 81 having a built-in motor, and a chain conveyor having a plurality of pawls 83 on a distribution frame 80 provided at a front protruding portion 76a at the front of the main body 76. 84 are provided. Seedling box N supplied from above to feeding means 7B
Is fed by a roller until it hits the pawl 83 of the chain conveyor 84, is pushed by the pawl 83 of the chain conveyor 84, and is moved until it comes into contact with a stopper 85 provided at the front part of the distribution frame 80.

In this state, the seedling box N is
Is completely transferred to the upper side, and by rotating the roller conveyor 82 in the normal and reverse directions, the horizontal conveying means 5B
Dispensed above. From horizontal conveying means 5B to feeding means 7B
The transport of the seedling box N to the seedling box N is the reverse of the above operation, and the chain conveyor 84 pushes the seedling box N taken in by the roller conveyor 82 onto the rollers with the claws.

The front protruding portion 76a supporting the delivery mechanism 7 of the main traveling body B2 is provided with a pair of front and rear connecting portions 86 on the left and right. The connecting portion 24 of the work traveling machine body A2 can be connected to the connecting portion 86. The box supply mechanism 8 is a mechanism that accommodates the seedling boxes N in a stacked state and supplies the seedling boxes N one by one to the delivery mechanism 7. Conveying conveyor means 75 formed by a wheel conveyor or a roller conveyor or the like disposed on the upper part of the machine base 74, and the frame 7 disposed over the conveying conveyor means 75
8 is provided with a box holding means (not shown) and a lifting means (not shown) which moves up and down to a position where the seedling box N on the transport conveyor means 75 is held by the box holding means 79.

The rear side of the frame frame 78 is open. For example, seedling boxes N stacked in 30 layers can be inserted from the rear while being placed on the conveyor means 75. The stacked seedling box N carried into the frame 78 is lifted by the lifting means, and when descending, the second seedling box N from the bottom is received by the box holding means, and the lowermost seedling box N is transported. It is placed again on the conveyor means 75 and transported forward.

The box holder support mechanism 12 is, for example, a box holder 14 containing a plurality of rows of seedling boxes N stacked in 30 levels.
The stacked seedling boxes N in the row are lifted and sent out to the forward conveyor means 75, and the box receiving body 14 is laterally moved via the horizontal moving mechanism so that the stacked seedling boxes N in the next row can be sent out. ing. In place of the seedling boxes N in a stacked state, a box collecting frame 15 for storing the seedling boxes N in a multi-tiered manner at an interval above and below the box receiving body 14 can be placed. The box collecting frame 15 is placed, and the lateral movement is performed by the lateral movement mechanism as described above.

The box collecting mechanism 9 is a mechanism for supplying the seedling boxes N one by one from the delivery mechanism 7 and collecting the seedling boxes N in upper and lower tiers. The box collecting mechanism 9 is mounted on the machine body 76 instead of the box feeding mechanism 8. Is done. The box collecting mechanism 9 is provided with a conveyor means 90 on a machine frame 89 which is detachably attached to the machine body 76, a frame 91 disposed over the conveyor means 90, and supported by the frame 91. Box multi-stage lifting means 92 for lifting seedling boxes N having growing seedlings on the conveyor means 90 one by one at intervals, and all seedling boxes N on the box multi-stage lifting means 92 are moved backward by two steps. And pusher means 93 for extruding.

The frame 9 is moved by the conveyor means 90.
1. The seedling box N is carried into the container 1, and the seedling box N is
When the required number of seedling boxes N are stored at intervals, the seedling boxes N are moved backward by the pusher means 93 to simultaneously push out all the seedling boxes N to the rear of the frame frame 91 and transferred to the box collecting frame 15. I do. Next, a method for collecting seedling boxes in a case where the seedling box-to-ground treatment machine described in the above embodiment is set in the main unit 4 so that the box collecting mechanism 9 can be used to form a seedling box collecting machine will be described.

Only the working unit 3 is moved to the end of the development area in the house, the box pick-up mechanism 11 is moved forward with the total of seven seedling boxes N being deployed in one horizontal row, and the hook 22 is moved to the seedling box. It is hooked from below on the peripheral edge Na of N, lifted by swinging upward and backward in an arc, placed on the front / rear conveyance means 18 of the front / rear conveyance mechanism 6, and conveyed rearward by the operation of the front / rear conveyance means 18. The front-rear transfer means 18 and the vertical transfer means 5A on which all the seedling boxes N are placed are operated to transfer the seedling boxes N to the vertical transfer means 5A, and the horizontal transfer means 5B standing slightly below the overlap position at the overlap position. Is raised to raise the seedling box N, and after reaching the ascending position, the lateral conveying means 5B is caused to perform a lateral feeding operation, so that the roller conveyor 8 of the distribution means 7A of the delivery mechanism 7 located at the same height.
2 are transferred one by one onto the transport conveyor means 90 of the box collecting mechanism 9 at the rear by the feeding means 7B.

The vertical and horizontal transport mechanism 5
After the seedling box N has been delivered, the operation unit 3 is advanced to perform an operation for collecting the next expanded seedling box N. From picking up one row of seedling boxes N to transferring them to the front and rear transport means 18
It is performed without stopping the advance of the working unit 3.
The collection of the expanded seedling boxes N in the first 1 to 3 rows is performed only by the working unit 3 and the main unit 4 is connected to the working unit 3 after the main unit 4 can be connected in the house. The box N is collected on the main unit 4.

The present invention is not limited to the above embodiment, but can be variously modified. For example,
Although the seedling box N has its longitudinal direction oriented in the front-rear direction (moving direction of the working unit 3), it may be unfolded in the left-right direction, and the transport on the working unit 3 may be in the left-right direction. Further, the front-rear transportation means 18 is attached to the machine main body 25 via the horizontal movement means, so that one row of the seedling boxes N can be collected while moving the front-rear transportation means 18 without moving the work unit 3. You may.

The box pick-up mechanism 11 is a dedicated device for collecting seedling boxes, and is preferably detached from the support frame 41 when the seedling box is unfolded.
May be retracted upward. However, the lifting divider 20 is detached from the box aligning means 16. Further, the working unit 3 can be formed in such a size that one to six or eight or more seedling boxes N can be processed at the same time. The one or two-sheet processing unit is used by being connected to the work unit 3 connected to the main unit 4.

[0067]

According to the present invention described in detail above, the hook 2
After the seedling box N is hooked by the swinging back and forth of 2, the swinging operation is performed by swinging the arc upward and rearward, so that the seedling box N can be reliably transferred to the forward and backward transporting means 18.
The height of the hook 22 can be set to follow the unevenness of the ground, and the hook 22 can be more reliably hooked on the seedling box N.

The front frame 51 and the support frame 41
The load applied to the support wheel 67 can be reduced by a load reducing means 97 such as a damper 98 or a spring 99 provided between
It is possible to reduce the weight and cost of members such as the support wheel 67. Further, the load reducing means 97 is connected to the wire winding machine 10.
With the elastic member 102, the load applied to the support wheel 67 can be reduced, and the front frame 51 and the hook 2
2 can be lifted.

[Brief description of the drawings]

FIG. 1 is an explanatory side view showing a main part of an embodiment of the present invention.

FIG. 2 is a side view of a box pick-up mechanism and a front-rear transport mechanism.

FIG. 3 is an explanatory side view showing a flip-up operation of a hooking tool.

FIG. 4 is an explanatory side view showing a returning operation of the hook.

FIG. 5 is an explanatory front view of a seedling box lifting mechanism.

FIG. 6 is a plan view of a box pick-up mechanism and a front-rear transport mechanism.

FIG. 7 is a side view showing a seedling box picking operation of the box picking mechanism.

FIG. 8 is a side view showing a seedling box delivery operation of the box pick-up mechanism.

FIG. 9 is a cross-sectional side view illustrating the operation of the hooking tool for hanging the seedling box.

FIG. 10 is an explanatory diagram showing the movement of the hooking tool from the time when the seedling box is hooked up to the time when the hooking tool is flipped up.

FIG. 11 is an explanatory view showing the movement of the jumping-up member from when it jumps up to when it is returning.

FIG. 12 is an explanatory diagram showing the movement of the flip-up member from the middle of the return to the completion of the return.

FIG. 13 is a perspective view of a lifting device.

FIG. 14 is a side view showing a first example of a load reducing unit.

FIG. 15 is a side view showing a second example of the load reducing unit.

FIG. 16 is a side view showing a third example of the load reducing unit.

FIG. 17 is a side view showing a separated state of a seedling box unfolding and collecting machine as a seedling box ground processing machine.

FIG. 18 is a plan view of the same.

FIG. 19 is an overall side view of the seedling box collection machine.

FIG. 20 is a plan view of a front central portion of the seedling box-to-ground processing machine.

FIG. 21 is a side view of the working unit.

FIG. 22 is a plan view of a vertical and horizontal transport mechanism of the work unit.

FIG. 23 is a rear view of the vertical and horizontal transport mechanism of the work unit.

FIG. 24 is a sectional view taken along line XX of FIG. 20;

[Explanation of symbols]

 A2 Work traveling machine body B2 Main traveling machine body 3 Working unit 4 Main unit 6 Front / rear transport mechanism 11 Box pick-up mechanism 18 Front / rear transport means 22 Hook 41 Support frame 51 Front frame 66 Horizontal axis 67 Support wheel 97 Load reduction means N Seedling box Na Perimeter

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiaki Goto 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Works (72) Inventor Aya Hirose 64 Ishizukita-cho, Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. Inside

Claims (4)

[Claims] 1. A work traveling machine (A2) and a front-rear transport means (1) inclined forward and downward from the work traveling machine (A2).
8), and a box pick-up mechanism (11) arranged in front of the front-rear transportation means (18).
8) Box pick-up mechanism (11) on support frame (41)
The front frame (51) is swingably supported around a horizontal axis (66), and the periphery (Na) of the seedling box (N) deployed on the ground is hooked on the front frame (51) from below, and the upper portion is held. A hook (22) that lifts the seedling box (N) by a circular arc motion rearward and upward at the center, and a support wheel (67) that sets the height so that the lower end of the hook (22) is arranged close to the ground. A seedling box-to-ground treatment machine. 2. A load reducing means (97) for reducing a load applied to a support wheel (67) is provided between the front frame (51) and the support frame (41). 2. The seedling box-to-ground treatment machine according to 1. 3. The load reducing means (97) is a damper (98) or a spring (99) for urging the front portion of the front frame (51) upward with respect to the support frame (41). The seedling box-to-ground treatment machine according to claim 2. 4. The wire winding machine (100) provided on the work traveling machine body (A2), wherein the load reducing means (97) is provided.
And a wire (101) of the wire winding machine (100).
Elastic body (102) provided between the frame and the front frame (51)
The seedling box-to-ground treatment machine according to claim 2, comprising: