JPH1175554A - Box pick-up mechanism of seedling box ground treatment machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To ensure that a seedling box can be securely hooked and lifted and transferred to a front-rear transport mechanism, so that a picking operation can be performed smoothly and in a short time. SOLUTION: A peripheral body Na of a seedling box N spread on the ground is supported by a work traveling machine together with a front-rear transport mechanism, lifted up, and delivered to the front-rear transport mechanism. A front frame 51 extending above and in front of the front-rear transport mechanism;
The upper part is supported by the front part of the front frame 51 so as to be able to swing back and forth, and the forward movement of the upper part causes the lower part to hook the peripheral edge Na of the seedling box N from below and to make a circular motion upward and rearward around the upper part. A hook 22 for lifting the seedling box N by
After the hook 22 oscillates at a certain angle due to engagement with the seedling box N, the hook 22 is forcibly flipped upward and rearward to raise the seedling box N.
Forcible detachment means 56 for detaching from the device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box pick-up mechanism of a seedling box-to-ground processing machine for collecting seedling boxes deployed 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.

An important object of the present invention is to swing a hook upward and backward by swinging the hook upward and backward by swinging the hook upward and backward, and then forcibly lift the hook upward and backward by the forcible detaching means. By removing the seedling box, the seedling box can be securely hooked and lifted and securely transferred to the front and rear transport mechanism, providing a box picking mechanism for the seedling box-to-ground treatment machine that makes the picking operation smooth and short. To be.

Another object of the present invention is to ensure that even if a plurality of seedling boxes arranged side by side are not aligned in the front-rear direction or the like, each seedling box can be securely hooked by any of the plurality of rod-shaped members of the hook and lifted. Another object of the present invention is to provide a box pick-up mechanism for a seedling box-to-ground processing machine. Another object of the present invention is to provide a seedling box-to-ground treatment machine box capable of performing a subsequent flip-up operation only by swinging the hook at a constant angle without using a special actuator. In providing a pick-up mechanism.

Another object of the present invention is to provide a structure in which only the swinging member is swung at a fixed angle and the urging member is merely provided.
It is an object of the present invention to provide a box pick-up mechanism of a seedling box-to-ground processing machine capable of performing a flipping operation. Another object of the present invention is to provide a box pick-up mechanism of a seedling box-to-ground treatment machine, which can return a flipped hooking tool to a substantially hanging original position and can hook a next seedling box. is there.

Another object of the present invention is to allow each of a plurality of seedling boxes arranged side by side on the ground to be independently hooked by a hook and lifted, and all hooks can be simultaneously returned to a substantially hanging position. Another object of the present invention is to provide a box pick-up mechanism for a seedling box-to-ground processing machine.

[0009]

A first concrete means for solving the problems in the present invention is a peripheral Na of a seedling box N supported on a work traveling machine body A2 together with a front-rear transport mechanism 6 and deployed on the ground. And lift and transport mechanism 6
A box pick-up mechanism 11 to be transferred to the top, a front frame 51 extending above and in front of the front-rear transport mechanism 6;
The upper part is supported by the front part of the front frame 51 so as to be able to swing back and forth, and the forward movement of the upper part causes the lower part to hook the peripheral edge Na of the seedling box N from below and to make a circular motion upward and rearward around the upper part. A hook 22 for lifting the seedling box N by
After the hook 22 oscillates at a certain angle due to engagement with the seedling box N, the hook 22 is forcibly flipped upward and rearward to raise the seedling box N.
And forcible detachment means 56 for detaching from the device.

As a result, the hook 22 is securely hooked on the seedling box N and lifted in a short period of time with a smooth operation. Raise the seedling box N
Is reliably transferred to the front and rear transport mechanism 6. According to a second specific means for solving the problem in the present invention, in addition to the first specific means, the hooking tool 22 is disposed so as to face each of a plurality of seedling boxes N arranged side by side on the ground. And a plurality of rod-shaped members 52 which can swing independently for one seedling box N.

Thus, even if the plurality of seedling boxes N arranged side by side are not aligned in the front-rear direction, one seedling box N is securely hooked and lifted by any one of the plurality of rod-shaped members 52 of the hook 22. According to a third specific means for solving the problem in the present invention, in addition to the second specific means, the forcible detaching means 56 is provided with a hook having an upper part pivotally supported by the front frame 51 and a lower part in a hanging posture. A flip-up member 58 in contact with the pressing member 22; a biasing member 59 for biasing the flip-up member 58 in the flip-up direction; and a stopper for stopping the flip-up operation of the flip-up member 58 against the biasing member 59. 60, and a stopper releasing member 61 provided on the hooking tool 22 and releasing the stopper 60 when the hooking tool 22 swings by a certain angle.

As a result, without using a special actuator, the catching tool 22 can be swung upward by a certain angle or more, and the subsequent bouncing operation can be performed. The fourth specific means for solving the problem in the present invention is as follows:
In addition to any one of the specific means of (3), the forcible detaching means 56 has an urging member 62 for changing the urging direction from the hanging side to the flip-up side when the hook 22 swings by a certain angle. It is.

[0013] With this configuration, the hooking device 22 performs the flip-up operation only by swinging at a certain angle or more, and by only providing the urging member 62. A fifth specific means for solving the problem in the present invention is to have, in addition to the first specific means, a return means 57 for returning the forcible detaching means 56 to a position where the hook 22 substantially hangs down. .

As a result, the hook 22 is returned to the original position where it is substantially hung, and the next seedling box N can be hooked. A sixth specific means for solving the problem in the present invention is that, in addition to the first specific means, the hooking tool 22 is arranged opposite to each of a plurality of seedling boxes N arranged side by side on the ground and forced The release means 56 is provided in each of the hooks 22, and the return means 57 is provided to return the forcibly detachable means 56 to a position where the hook 22 is substantially suspended.

As a result, the hooking tool 22 performs a hooking operation for each of a plurality of seedling boxes N side by side, and a jumping-up operation is also performed, and all of the forcible detaching means 56 are simultaneously returned to a position where the hooking tool 22 substantially hangs down. .

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 14 to 21 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 supply mechanism 8 and a box collecting mechanism 9 can be selectively mounted on the main unit 4. When the box supply mechanism 8 is mounted on the main unit 4, a seedling box unfolding machine is obtained. When the box collecting mechanism 9 is mounted on the main unit 4, a seedling box collecting machine (shown in FIG. 16) 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 and can be distributed from the base position on one side in the left-right direction to the transfer position and collected from the transfer position to the base position. 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 present invention, the front side is the side on which the seedling box N is deployed, and the working unit 3 moves backward during the deployment,
Move forward at collection. 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, it is located on one side end of the vertical and horizontal transport mechanism 5 and the seedling box N is artificially supplied and taken out on one side end of the vertical and horizontal transport mechanism 5. .

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 it overlaps with the vertical transfer means 5A. 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, supports three front and rear rotating shafts 28 via brackets erected on the machine body 25, and controls the rear rotating shaft 28 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 lengths of the vertical conveying means 5A. A plurality of rollers 32 rotatable around the front and rear axes 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 rollers 32 of the horizontal transporting means 5B from a lowering position located below the upper surface of the belt 30 to an ascending position of an upper required height (for example, about the height of a human waist or about 1 m). I do. And the horizontal transport means 5B
When the seedling box N is lowered with the seedling box N placed thereon, the seedling box N is transferred to the vertical transport means 5A, and when the seedling box N is lifted from the lowered position with the seedling box N placed on the vertical transport means 5A, The seedling box N is lifted to enable the lateral transfer means 5B to 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 transfer mechanism 6 includes a front-rear transfer means 18 which can move the seedling box N forward and backward.
Moving means 10 which is provided between the vehicle 8 and the work traveling machine A2 and horizontally moves the front-rear transportation means 18 in the front-rear direction.
And The front-rear conveying means 18 is formed by a belt conveyor, and a support frame 41 supports seven rows of belt conveyors 42.
, Two sets (42A, 42B) are arranged in a straight line, and are simultaneously driven by a motor 43 provided below the support frame 41, and seven seedling boxes N are placed. At the same time in the front-rear direction.

The belt conveyors 42 in each row are arranged in two sets (42A, 42B) in a straight line with the rollers 44 interposed therebetween, but may be one long set. However, if two pairs (42A, 42B) are provided in front and rear, the front belt conveyor 42A is bent downward and steeply inclined, the rear belt conveyor 42B is tilted downward slowly and gently, and the rear belt conveyor 42B Between the seedling box N and the vertical conveying means 5A
Smooth delivery without shock is possible.

A pair of right and left ground wheels 45 are provided below the support frame 41, and the front and rear positions of the ground wheels 45 can be adjusted. By adjusting the front and rear positions, the inclination angle of the front and rear transport means 18 can be changed. 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 FIG. 7 and assists the box pick-up mechanism 11. A cylindrical part 20B is formed at the rear of a main part 20A formed of a metal plate into a thin box shape. 50, a pair of left and right vertical plates 20C is attached to the front part, and the front edge of the vertical plate 20C is formed to face forward and downward.

The lifting divider 20 includes a main body 20.
While lowering the contact surface pressure by grounding the front part of A, the front edge of the front downwardly directed vertical plate 20C is pushed into the bottom of the seedling box N, and the rear part of the seedling box N even if the root of the seedling is stretched on the ground. Is designed to lift strongly. The horizontal moving means 10 has an air cylinder 46 pin-connected to the rear part of the support frame 41, and a pair of left and right guide rods 47 pin-connected similarly. The air cylinder 46 is attached to the machine body 25. The pair of left and right guide rods 47 are guided by the machine body 25 so as to be slidable back and forth.

The front-rear transport means 18 is a horizontal moving means 10
Is connected to the machine main body 25, and is inclined forward and downward by the grounding wheel 45 being in contact with the ground, and can be moved in the front-rear horizontal direction by the operation of the air cylinder 46. The aligning means 16 and the box pick-up mechanism 11 can be operated. In addition,
An actuator is provided between the support frame 41 and the pair of left and right guide rods 47 for rotating the front end of the support frame 41 upward. When the work unit 3 is carried in and out of the house, the grounding wheel 45 and the box are provided. It is preferable that the pickup mechanism 11 can be retracted upward.

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, the horizontal moving means 10, and the like are arranged to form a compact working unit 3 in the left-right direction.

In FIGS. 1 to 6, 8, 9 and 18, the box pick-up mechanism 11 is detachably attached to the left and right sides of the support frame 41 of the front-rear transport mechanism 6, and has a front frame 51 projecting forward and upward. And seven hooks 22 provided on the front frame 51 in the left-right direction, and forcible detaching means 5 forcibly lifting the hooks 22 rearward and upward to separate them from the seedling box N.
6 and the forcible detaching means 5 to a position where the hook 22 is substantially suspended.
And return means 57 for returning 6.

The front part of the front frame 51 is a square pipe 51
A horizontal horizontal shaft-shaped support shaft 54 is supported by a plurality of support plates 51B provided on the square pipe 51A. The hook 22 is a rod-shaped member 52 formed of a round bar or the like.
And a boss member 53 formed by fixing a pipe material or the like on the upper part of the rod-shaped member 52, and three (or a plurality other than three) are arranged in one seedling box N, and a support shaft is provided. Boss material 53 at 54
Are freely and freely swingably fitted, and a lower portion of each bar-shaped member 52 forms a hooking claw portion 52A having a substantially L shape (hook shape) in a side view.

The hook 22 is hooked on the peripheral edge Na of each seedling box N from below by the forward movement of the forward and backward transport mechanism 6 with the hook 52A substantially grounded. Since the seedling box N does not move in this hooked state, the seedling box N moves in an arc around the upper part,
The hook claw 52A moves in an arc upward and rearward while hooking the seedling box N, and lifts the rear part of the seedling box N centering on the front part (see FIGS. 5 and 6). That is, the hook 22 raises the seedling box N using the component force of the forward power.

The hook 52A is located above the front part of the forward and backward transport means 18 with the seedling box N lifted. When the hook 22 further advances from this state, the angle between the rod 52 and the peripheral edge Na is narrowed. Becomes smaller, and when swinging more than a certain angle (natural departure angle), the peripheral edge Na comes into contact with the upper part of the hook claw 52A, and the hook claw 52A comes off from the peripheral edge Na by leverage, and the seedling box N falls. (See FIGS. 4 and 6).

Even if the seedling boxes N are horizontally displaced in the front-rear direction and the vertical direction, of the plurality of hooking tools 22, those that can be hooked on the seedling box N are individually hooked and lifted sequentially, and furthermore, detachable. We gradually leave from what became. Note that the bar-shaped material 52 is forcibly released by the forcible release means 56 before the hanging claw 52A is separated from the peripheral edge Na by the leverage action, that is, before the swing angle becomes the natural release angle (forcible release angle). The leverage may occur during the separation. When the hook 22 interferes with the peripheral rib Nb below the periphery Na of the seedling box N, the hook 22 cannot engage with the periphery Na, but at least two hooks 22 engage with the periphery Na. Then, the seedling box N can be lifted.

The forcible detaching means 56 has an upper portion pivotally supported by the front frame 51 and a lower portion in contact with the hooking member 22 in a hanging posture, and urges the flipping member 58 in the flipping direction. The urging member 59 and the urging member 5
A stopper 60 for stopping the flip-up operation of the flip-up member 58 against the hook 9;
2 has a stopper release member 61 that releases the stopper 60 when it swings by a certain angle (a forced release angle smaller than the natural release angle at which the lever action occurs).

The flip-up member 58 is formed by bending a round bar into a U-shape when viewed from the front, forming bosses 58A at both ends thereof and loosely fitting the support shaft 54.
5, the rod 65 is inserted through a front plate 51C fixed to the square pipe 51A, and the biasing member 59 is formed by a coil spring that is loosely fitted to the rod 65 and abuts on the front plate 51C. I have.

The stopper 60 is provided on the horizontal shaft 66 supported by the support plate 51B. The stopper 60 comes into contact with a contact piece 58B formed on the boss 58A of the flip-up member 58 to restrict the swing of the flip-up member 58. doing. The stopper 60 is urged by a spring 67 so as to come into contact with the stop pin 68, and is thereby elastically held at a position where it comes into contact with the contact piece 58B.

The stopper releasing member 61 is formed of a cam fixed to the hook 22 or one of the bar members 52, and has a portion protruding from the support shaft 54 more than the contact piece 58B. After a slight play from the posture, the stopper 60 can be brought into contact with the stopper 60. When the hook 22 swings by a certain angle, the stopper 60 is pushed and the spring 67 is pushed.
And the contact with the contact piece 58B is canceled, thereby enabling the jumping-up operation of the jumping-up member 58 by the urging member 59 (from the state of FIG. 8 to the state of FIG. 9).

When the hook 22 on which the seedling box N is hooked swings up to a certain angle while drawing an arc trajectory upward, the stopper releasing member 61 releases the stopper 60 immediately before the spontaneous departure angle is reached, and jumps up. The member 58 is shockedly rocked by the urging member 59 to flip up the hook 22, forcibly disengage from the seedling box N, and drop the seedling box N 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. I do. Even if the seedling box N is poorly picked up, it is picked up by the lifting divider 20 that advances later. The return means 57 includes a rotating shaft 69 supported by a plurality of support plates 51B over substantially the entire length of the square pipe 51A, a motor 71 for driving the rotating shaft 69 via a chain transmission means 70, 69 has a return lever 72 which can be brought into contact with the flip-up member 58.

The return lever 72 is formed by forming a round bar material into a U-shape and having both ends provided on the rotary shaft 69. The return lever 72 is provided corresponding to all the hooks 22, and is flipped up to the upper position. The rotating hooking member 22 and the flip-up member 58 are brought into contact with each other by the drive of the motor 71, and are rotated downward against the urging member 59. Thereby, the stopper 60 also returns to the set state, and the hook 22 returns to a position where the seedling box N can be hung down substantially (from the solid line state to the two-dot chain line state in FIG. 9).

If the unfolded seedling boxes N are uneven or inclined, such as unevenness in the front-rear direction, the hooks 22 corresponding to each seedling box N and a plurality of rod-shaped members 52 are engaged. The hooking can be reliably performed only by slightly different timings and lifting timings, and each hooking tool 22 can be independently connected to the seedling box N
Are transferred to the front-rear transport means 18, so that each seedling box N
Is definitely taken up. Even if the seedling box N has irregularities in the vertical direction, the hook 22 can be hooked on all the seedling boxes N if the hook 22 is grounded so that the claw 52A can be dragged. Further, the hook 22 is driven by the running power so that the seedling box N
No special actuator is required because there is no moving part near the ground, so that no trouble occurs.

The flip-up member 5 of the forcible detaching means 56
Reference numeral 8 designates an artificially pivoted return to the set position,
4, the flip-up member 58 is rotated through the engagement portion by rotating, and the return lever 7 is rotated.
The second rotating shaft 69 may be configured to be artificially rotated. FIG. 10 shows a first modification of the forcible detaching means 56. The forcible detaching means 56 is provided on the boss member 53 of the rod-shaped member 52 between the projecting piece and the square pipe 51A.
A compression spring (or a gas damper or the like) as 2 is provided so that the urging direction is reversed at a certain angle of the swing of the rod-shaped material 52, that is, the switching is performed in an unstable manner. The urging force is changed to the drooping side from the drooping posture to a certain angle and to the flipping side for a certain angle or more. The hanging posture and the flipping posture are each stopped by the stop member. The return means 57 can be the same as that of the above embodiment.

FIG. 11 shows a second modification of the forcible release means 56. The forcible release means 56 also serves as the return means 57, and the return lever 72 provided on the rotary shaft 69 is located on the front side of the hook 22. And the return lever 72 and the bar 52 are connected by a spring 73. Then, the bar-shaped material 52 hooked on the seedling box N swings against the spring 73,
A sensor (not shown) such as a photo sensor detects that the swing has reached a certain angle, rotates the rotating shaft 69 via the motor 71, lifts the hook 22 with the return lever 72, and lifts the seedling box. N is released. Then, the motor 71 is rotated in the reverse direction to return the return lever 72 to the original position, and the hook 22 is returned via the spring 73.

FIG. 12 shows a first modification of the hooking device 22, in which two rod-like members 52 are pivotally supported back and forth on a support plate 51B to form a parallel link, and a bar having a hook 52A at the lower end thereof. Although the bar 95 is pivotally connected, the bar 95 is always in a hanging posture even if the bar 52 swings, and cannot be naturally released by leverage, but the hook 22 is securely connected to the seedling box N.
And the seedling box N is detached only by the forced detachment by the forced detachment means 56.

FIG. 13 shows a second modification of the hooking tool 22, in which two rod-like members 52 are pivotally supported substantially vertically on a support plate 51B to form parallel links. It is the same as the hook 22 of the modification. The box pick-up mechanism 11 is a device for collecting seedling boxes and is preferably detached from the support frame 41 when the seedling box is unfolded.
The hooking tool 22 may be retracted upward while being attached. However, the lifting divider 20 is detached from the box aligning means 16.

The front frame 5 of the box pick-up mechanism 11
1 is detachably mounted on the machine main body 25 of the work traveling machine A2, and the hook 22 is hooked and lifted on the seedling box N by the advance of the work traveling machine A2, and the front-rear transportation means is provided below the lifted seedling box N. 18 may be advanced and inserted. 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.

The main unit 4 is shown in FIGS. 14 to 17 and 21 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 or the like is mounted, and the left and right crawler traveling units 77 are driven by a hydraulic motor. 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 self-rotating rollers 81 having a built-in motor, and a chain conveyor having pawls 83 on a distribution frame 80 provided at a front projection 76a at the front of the machine 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 seedling boxes N one by one from the delivery mechanism 7 and collecting the seedling boxes N in upper and lower stages. The box collecting mechanism 9 is mounted on the machine body 76 instead of the box supplying 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. N, the working unit 3 is further advanced, or the front-rear transportation unit 1 is moved by the horizontal moving unit 10 of the front-rear transportation mechanism 6.
Move 8 forward. It is hooked from below on the periphery Na of the seedling box N by the hooking tool 22, further lifted by swinging upward and backward in an arc, and 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. I do. When the front / rear conveyance means 18 is moved forward by the horizontal movement means 10, the front / rear conveyance means 18 is returned by the horizontal movement means 10.

The front and rear transport means 18 on which all the seedling boxes N are placed and the vertical transport means 5A are operated, and the seedling boxes N are transferred to the vertical transport means 5A, and the horizontal position which is slightly below the standby position at the overlap position. The transporting means 5B is raised to lift the seedling box N, and after reaching the raised position, the lateral transporting means 5B is caused to perform a lateral feeding operation, so that the distributing means 7 of the delivery mechanism 7 located at the same height.
The sheet is transferred one by one onto the roller conveyor 82 of A, and further moved by the feeding means 7B onto the transport conveyor means 90 of the box collecting mechanism 9 at the rear.

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. Also, the horizontal moving means 10 is omitted and the work unit 3
The seedling box may be collected only by moving forward.

[0065]

According to the first aspect of the present invention, the upper portion of the front frame 51 is supported so as to be able to swing back and forth. A hook 22 for lifting the seedling box N by hooking the peripheral edge Na from below and making an arc movement rearward and upward around the upper portion;
After the hook 22 oscillates at a certain angle due to engagement with the seedling box N, the hook 22 is forcibly flipped upward and rearward to raise the seedling box N.
And the forced detachment means 56 for detaching the seedling box N, so that the seedling box N can be securely hooked and lifted in a short time with a smooth operation. Bounce back upward and seedling box N
And the seedling box N can be reliably transferred to the front and rear transport mechanism 6.

According to the second aspect, since the plurality of hooks 22 are provided so as to be swingable independently of one seedling box N, the plurality of seedling boxes N arranged side by side are not aligned in the front-rear direction or the like. Also, one seedling box N can be reliably hooked and lifted by any of the plurality of hooking tools 22. According to the third aspect, the forcible detaching means 56 includes a flip-up member 58 whose upper portion is pivotally supported by the front frame 51 and whose lower portion abuts on the hooking tool 22 in the hanging posture, and the flip-up member 58 is moved in the flip-up direction. A biasing member 59 for biasing, a stopper 60 for stopping the flip-up operation of the flip-up member 58 against the biasing member 59, and the hooking tool 22 provided on the hooking tool 22 and swinging by a predetermined angle. Stopper release member 61 that sometimes releases stopper 60
Therefore, without using a special actuator, the hooking device 22 can perform the subsequent jumping-up operation only by swinging at a predetermined angle or more.

According to the fourth aspect, the forcible detaching means 56 comprises:
Since the urging member 22 has a biasing member 62 that changes the biasing direction from the hanging side to the flipping side when the hooking tool 22 swings by a certain angle,
The catching tool 22 can perform a flip-up operation only by swinging at a certain angle or more, and by only providing the urging member 62. According to the fifth aspect, since the return means 57 for returning the forcible detachment means 56 to a position at which the hook 22 is substantially hung is provided, the hook 22 can be returned to the original position at which the hook 22 is substantially hung. It becomes hookable.

According to the sixth aspect, the hooking tool 22 is arranged opposite to each of a plurality of seedling boxes N arranged side by side on the ground,
Forcibly detaching means 56 is provided for each of the hooking tools 22, and all the forcedly detaching hand hooking tools 22 can be hooked side by side for each of a plurality of seedling boxes N, and a flip-up operation is also performed. Can be reliably hooked and flipped up, and the forcible detachment means 56 can all be returned to the position where the hooking tool 22 is substantially suspended at the same time.

[Brief description of the drawings]

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

FIG. 2 is a front view of a box pick-up mechanism.

FIG. 3 is a plan view of a box pick-up mechanism and a front-rear transport mechanism.

FIG. 4 is a cross-sectional view showing an operation of engaging and disengaging a seedling box and a hook.

FIG. 5 is a side view showing a seedling box lifting operation.

FIG. 6 is a side view showing a transfer operation from lifting of a seedling box.

FIG. 7 is a perspective view of a lifting divider.

FIG. 8 is a sectional side view of the box picking-up mechanism when the seedling box is hooked.

FIG. 9 is a cross-sectional side view of the box pick-up mechanism after the hook is flipped up.

FIG. 10 is a sectional side view showing a first modification of the box pick-up mechanism.

FIG. 11 is a sectional side view showing a second modification of the box pick-up mechanism.

FIG. 12 is a cross-sectional side view showing a first modification of the hook.

FIG. 13 is a cross-sectional side view showing a second modification of the hook.

FIG. 14 is a side view showing a separated state of a seedling box unfolding and collecting machine as a seedling box-to-ground processing machine.

FIG. 15 is a plan view of the same.

FIG. 16 is an overall side view of the seedling box collection machine.

FIG. 17 is a plan view of a front central portion of the seedling box-to-ground processing machine.

FIG. 18 is a side view of the working unit.

FIG. 19 is a plan view of a vertical and horizontal transport mechanism of the work unit.

FIG. 20 is a rear view of the vertical and horizontal transport mechanism of the work unit.

FIG. 21 is a sectional view taken along line XX of FIG. 17;

[Explanation of symbols]

 A2 Work traveling machine body B2 Main traveling machine body 3 Working unit 4 Main unit 6 Front / rear transport mechanism 9 Box collection mechanism 11 Box pick-up mechanism 18 Front / rear transport means 20 Lifting divider 22 Hook tool 52A Hook claw N Seedling box Na Perimeter

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masayuki Harada 64 Ishizukita-cho, Sakai-shi, Osaka Inside Kubota Sakai Works

Claims (6)

[Claims] 1. A front and rear transport mechanism (6), which is supported by a work traveling machine (A2) together with a forward and backward transport mechanism (6), hooks a peripheral edge (Na) of a seedling box (N) deployed on the ground and lifts it. Pick-up mechanism (11) to be delivered to
A front frame (51) extending above and in front of the front-rear transport mechanism (6), and an upper part supported by the front part of the front frame (51) so as to be swingable back and forth. A hook (22) that lowers hooks the periphery (Na) of the seedling box (N) from below and moves in an arc upward and backward about the upper part to lift the seedling box (N), and the hooking tool. (2
2) has a forced release means (56) for forcibly lifting the hooking tool (22) rearward and upward to separate from the seedling box (N) after swinging at a predetermined angle by engagement with the seedling box (N). A box pick-up mechanism for a seedling box-to-ground processing machine, characterized in that: 2. The hooking tool (22) is disposed opposite to each of a plurality of seedling boxes (N) arranged side by side on the ground, and a plurality of independent swings are performed with respect to one seedling box (N). A box pick-up mechanism for a seedling box-to-ground processor according to claim 1, characterized in that it has a free bar (52). 3. The forcible detaching means (56) has an upper portion pivotally supported by the front frame (51) and a lower portion abutting against the hanging tool (22) in a hanging posture, and a flip-up member (58). An urging member (59) for urging the member (58) in a flipping direction, and a stopper (60) for stopping the flipping operation of the flipping member (58) against the urging member (59).
And a stopper releasing member (61) provided on the hooking tool (22) and releasing the stopper (60) when the hooking tool (22) swings by a certain angle. 2. The box pick-up mechanism of the seedling box-to-ground treatment machine according to any one of 2. 4. The forcible detaching means (56) has an urging member (62) for changing the urging direction from a hanging side to a flipping side when the hook (22) swings by a certain angle. A box pick-up mechanism for a seedling box-to-ground treatment machine according to any one of claims 1 to 3. 5. The device according to claim 5, wherein said forcible detaching means (56) is connected to a hook (2).
2. The box pick-up mechanism of the seedling box-to-ground treatment machine according to claim 1, further comprising return means (57) for returning the 2) to a substantially hanging position. 6. A plurality of seedling boxes (N) arranged side by side, wherein the hooking tools (22) are deployed on the ground, and each of the hooking tools (22) is provided with a forced detachment means (56). 2. A box pick-up mechanism for a seedling box-to-ground processing machine according to claim 1, further comprising a return means (57) for returning the entire forced detachment means (56) to a position where the hook (22) is substantially suspended. .