JP3391671B2 - Box pick-up mechanism of seedling box ground treatment machine - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art In seedling raising work for rice and vegetables, after germination, seedling boxes are arranged in a house (hardening house) in units of several hundred to 1,000 sheets for greening and / or hardening treatment. Mechanization technology has been developed for efficient collection within a small site. As a technology for deploying and collecting seedling boxes,
There is one disclosed in Japanese Patent Application Laid-Open No. 7-107817. This technology is a traveling device that moves the aircraft forward and backward,
A platform for mounting a seedling box cart, a seedling box transporting device that can selectively transport seedling boxes from the ground to the aircraft and from the aircraft to the ground, and a seedling box on the aircraft A seedling box loading and unloading device that can selectively load the seedlings on the platform on-board storage section and unload the seedling boxes loaded on the platform mounting section on the machine is installed. Is configured.

[0003]

In the above-mentioned prior art, a separating wire is provided at the front end of the seedling box transporting device, and the separating wire is inserted between the ground and the seedling box to pick up the seedling box. It is difficult to insert even a wire rod under the seedling box, and it is extremely difficult to collect a plurality of seedling boxes at the same time.

Therefore, it is conceivable that a hooking tool is arranged in front of the seedling box transporting device and the periphery of the seedling box is hooked from below by the hooking tool to lift it. It is difficult to expect the seedling box to be picked up, and if there is an uneven seedling box, it may become impossible to engage, and since the forward movement of the seedling box transfer device will be stopped and the hook will be raised vertically, the picking operation Will not be smooth and will take time.

By the way, the shape of the seedling box is not one type,
There are some things with different top and bottom widths of the periphery. An important object of the present invention is to hook a seedling box by swinging back and forth of a hooking tool, and then swing it upward and backward in an arc to reliably transfer the seedling box to a front and rear transport mechanism, and this picking operation can be performed smoothly and in a short time. In addition, when picking up a seedling box with an arc swing, even if the vertical width of the peripheral edge of the seedling box is different, it is possible to provide a box picking mechanism for a seedling box ground processing machine that can pick up normally. is there.

Another object of the present invention is to construct a hooking member by attaching a hooking member having a substantially L-shaped hooked end portion to a rod-shaped member to form a hooking tool, and to hook a plurality of hooking members having different hooking lengths. The box picking mechanism of the seedling box ground processing machine that can pick up normally even if the vertical width of the peripheral edge of the seedling box etc. is different by providing the claw end part and allowing it to be replaced and arranged at the hooking position To provide.

Another object of the present invention is to construct a hooking tool by mounting a hook member having a substantially L-shaped hook end formed on a rod-shaped member to form a hooking tool, which has hooking lengths at the upper and lower ends of the hook member. The box picking mechanism of the seedling box ground processing machine that can pick up normally even if the vertical width of the peripheral edge of the seedling box is different by providing different claw ends so that it can be placed upside down. To provide.

Another object of the present invention is to attach a hooking member having a substantially L-shaped hooked end portion to a rod-like member in a detachable manner to form a hooking tool, and a plurality of hooks having different hooking lengths. Another object of the present invention is to provide a box picking mechanism for a seedling box ground processing machine, which can pick up normally even if the vertical width of the peripheral edge of the seedling box is different by replacing and using the claw member.

[0009]

A first concrete means for solving the problems in the present invention is a peripheral edge Na of a seedling box N which is supported on the work traveling machine body A2 together with the front-rear transport mechanism 6 and is spread on the ground. And lift up and back and forth transport mechanism 6
A box pick-up mechanism of a seedling box ground processing machine to be delivered to the upper side, and a front frame 51 extending above and above the front-rear transport mechanism 6, and an upper part of the front frame 51 being swingable forward and backward. The lower hooking member 111 is supported, and the lower hanging claw member 111 hooks the peripheral edge Na of the seedling box N from below and moves backward and upward around the upper part by raising the seedling box N. This hooking device 22 has a hook claw changing means 11 whose hooking length can be changed.
To have zero.

As a result, the nursery box N is securely hooked by the hooking tool 22 that moves in an arc, is lifted in a short time by a smooth operation, and is reliably delivered to the front and rear transport mechanism 6, and the seedling box N having different vertical widths of the peripheral edge Na is provided. Even if the hook change means 110
By changing the peripheral edge hooking length of the hooking tool 22, it is possible to properly engage and pick up.

A second specific means for solving the problems in the present invention is the hooking tool 2 in addition to the first specific means.
Reference numeral 2 denotes a bar-shaped member 52 that is independently swingable with respect to one seedling box N, and a hanging claw member 111 that is attached to the lower part of each bar-shaped member 52 and has a substantially L-shaped claw end 111A. The hooking member 111 has a plurality of hooking ends 111A having different hooking lengths, and the hooking members 111 are attached to the rod-shaped member 52 so that they can be replaced and arranged at hooking positions. It is that you are.

As a result, the hook 22 uses the hanging claw member 111 having a plurality of substantially L-shaped claw ends 111A having different catching lengths, and is used as a seedling box N having different vertical widths of the peripheral edge Na. Even if there is, the nail end 11 corresponding to the seedling box N
By replacing 1A with the hooking position, it is possible to normally engage and pick up.

In addition to the first specific means, a third specific means for solving the problems in the present invention is the hooking device 2 described above.
2 is a hanging member in which two substantially L-shaped claw end portions 111A having different lengths are hooked to the upper and lower ends of the bar-shaped member 52 which is independently swingable with respect to one seedling box N. Claw member 11
1 is attached so that it can be reversed upside down. Thereby, even if the hook 22 is a seedling box N having different vertical widths of the peripheral edge Na, the hook end portion 111 corresponding to the seedling box N is formed.
By replacing A on the lower end side of the hanging claw member 111, it is possible to properly engage and pick up.

A fourth concrete means for solving the problems in the present invention is the same as the first concrete means.
2, a hook member 111 having a substantially L-shaped claw end portion 111A is detachably attached to each lower part of a rod-shaped member 52 that can be independently rocked with respect to one seedling box N. Part 11
That is, a plurality of hooking members 111 having different hooking lengths of 1A can be replaced.

As a result, even if the hook 22 is a seedling box N having different vertical widths of the peripheral edge Na, the hooking member 111 having the claw end portion 111A corresponding to the seedling box N is attached to the rod-shaped member 5.
By attaching the replacement to the lower part of 2, it is possible to properly engage and pick up.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 18 to 25 show the whole seedling box developing and collecting machine that can be changed to a seedling box developing machine and a seedling box collecting machine as a seedling box ground processing machine. This seedling box deploying and collecting machine is capable of simultaneously deploying and collecting seven left and right (one or a plurality of sheets other than seven) seedling boxes N side by side while forming a sidewalk in the center.

The seedling box developing / recovering machine is composed of 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 installing the box feeding mechanism 8 on the main unit 4, it becomes a seedling box expanding machine, and by installing the box collecting mechanism 9 on the main unit 4, it becomes a seedling box collecting machine (shown in FIG. 20). Even by itself, the number of seedling boxes N that can be placed on it can be developed and collected, and can be used independently.

The work unit 3 is roughly classified into a seedling box N on which one side can be distributed from a base point position to a delivery position and collection from the delivery position to the base point position can be performed forward and backward. A movable vertical / horizontal transport mechanism 5, a front-back transport mechanism 6 that can transfer the seedling box N to the vertical / horizontal transport mechanism 5 and can transfer the placed seedling box N to the ground, and to the ground. It has a box pick-up mechanism 11 for lifting the deployed seedling box N on the front-rear transport mechanism 6, and these are mounted on the work traveling machine body A2.

In the following description, the front side is the side on which the seedling box N is developed, and the working unit 3 moves backward during expansion and advances during recovery. In addition, the base point position is a position on the delivery mechanism 7 of the main unit 4 arranged at a position outside one side end portion of the vertical and horizontal transport mechanism 5 when the work unit 3 is connected to the main unit 4, and the work unit 3 is used alone, the position is on one side end of the vertical / horizontal transport mechanism 5, and the seedling box N is on the one side end of this vertical / horizontal transport mechanism 5.
Will be artificially supplied and taken out.

The working traveling machine body A2 has caster-type front wheels 26 and rear wheels 27 on 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 / horizontal transport mechanism 5 is arranged on the machine body 25.
A vertical transport means 5A for simultaneously moving the five seedling boxes N back and forth to deliver them to the front-back transport mechanism 6, and can be moved up and down with respect to the vertical transport means 5A and lowered to a position where it overlaps with the vertical transport means 5A. And lateral transfer means 5B for handing over the whole seedling box N and laterally moving it in the ascending position.
And an elevating means 5C for elevating B.

The vertical conveying means 5A is a belt conveyor in which seven sets are arranged, and supports three front and rear rotary shafts 28 via brackets standing on the machine body 25, and the rear rotary shaft 28 is driven by a motor 29. The belt 30 is driven and the belt 30 is wound around the pulleys provided on the respective rotary shafts 28, and one belt N is placed and conveyed by the two belts 30 arranged at intervals in the left-right direction. It has become.

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

All the rollers 32 are arranged in correspondence with the belts 30 of the vertical conveying means 5A, and in the lowered position, the rollers 32 are positioned below the upper surface of the belt 30 and the belt 3
It becomes a stacking arrangement state in 0 and the height direction, and the seedling box N is raised and lowered.
Can be exchanged with the belt 30. Lifting means 5
C is an elevator type, in which a mounting body 38 is erected on the rear portion of the conveyor frame 31 of the lateral conveying means 5B, and a guide column 33 made of shaped steel is erected on the work traveling machine body A2.
The mounting body 38 is guided through the rollers so as to be able to move up and down, and the chain 35 of the elevator driving tool 34 is connected to the mounting body 38.

The elevating means 5C elevates and lowers the roller 32 of the lateral conveying means 5B from a lowered position located below the upper surface of the belt 30 to an elevated position having a required upper height. Then, when the seedling box N is placed on the horizontal transfer means 5B, it descends, and the seedling box N is transferred to the vertical transfer means 5A, and descends with the seedling box N placed on the vertical transfer means 5A. When raised from the position, the seedling box N is lifted and the lateral transfer means 5
Allows B to move seedling box N from side to side.

A stopper 40 is provided on a square of the conveyor frame 31 of the lateral conveying means 5B via a vertical axis 39, and the direction of the stopper 40 is changed to guide the lateral and front-rear transportation of the seedling box N. A small-diameter roller 36 is provided in the front part of the conveyor frame 31 for facilitating the delivery of the seedling box N to the front-rear transporting means 18.

The front / rear transport mechanism 6 has a front / rear transport means 18 on which a seedling box N can be placed and can be moved back and forth, and a box aligning means 16 for aligning the deployed seedling boxes N. The front-rear conveying means 18 is formed of a belt conveyor, and seven rows of belt conveyors 42 are supported by the support frame 41. The belt conveyors 42 in each row have two pairs of front and rear rollers (42A, 42A, 42A, 42A).
B) is linearly arranged, and is simultaneously driven by a motor 43 provided below the support frame 41,
It is possible to place seven seedling boxes N and transport them in the front-back direction at the same time. The belt conveyors 42 in each row have two sets of front and rear (42A, 42B) linearly arranged with a roller 44 in between, but one set of long ones may be used.

A pair of left and right grounding wheels 45 are provided on the lower side of the support frame 41. The grounding wheels 45 are adjustable in the front-rear position. By adjusting the front-rear position, the inclination angle of the front-rear conveying means 18 is changed. It is possible to dispose the front end portion of the front-rear conveying means 18 at a position close to the ground and a position floating. The box aligning means 16 is attached to the front portion of the support frame 41 so as to correspond to the belt conveyors 42 in each row. The box aligning means 16 is used for the belt conveyor 4
The roller 5 which is located on the extension of 2 and can be grounded to the support bracket 49 protruding forward from the support frame 41.
0 is rotatably provided.

The box aligning means 16 has an original box aligning function when the seedling box is developed. The roller 50 is grounded and brought into contact with the seedling box N discharged to the ground to move forward. By pushing a plurality of seedling boxes N in the left-right direction to align the front-rear positions, the front-rear distance from the already-deployed seedling boxes N is eliminated.
In addition, the upper surface of the roller 50 also serves to reduce the drop when the seedling box N is discharged from the belt conveyor 42 to the ground.

The box aligning means 16 also serves to attach the lifting divider 20 when collecting the seedling boxes. The lifting divider 20 is shown in FIGS. 7, 8, 17 and 22, and assists the box pick-up mechanism 11. The metal round bar is bent to form a hook-shaped member 20A. 2 or more are fixedly attached to the tubular member 20B, and the tubular member 20B is loosely fitted and mounted on the roller 50.

The lifting divider 20 pushes into the bottom of the seedling box N while grounding the front part of the hook-shaped member 20A,
Even if the root of the seedling is stretched on the ground, the rear part of the seedling box N is strongly lifted, and the hook-shaped member 20A has a structure that does not cause mud clogging. The front-back conveyance means 1
The reference numeral 8 is pivotally connected to the machine body 25 so as to be swingable about a horizontal axis, and the ground wheel 45 is grounded to incline forward and downward.
By moving the machine body 25 back and forth, the box aligning means 16 and the box pick-up mechanism 11 can be operated.

The lateral transfer means 5B and the front-back transfer means 18
The conveyor frame 31 and the support frame 41 form the 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 is close to the width of the seven seedling boxes N. It is wide. Conveyor frame 31 and support frame 41
The vertical conveying means 5 including the motor 29 within such a width of the
A, the elevating 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.

1 to 14, 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 the front frame 5 protruding forward and upward.
1, a pair of hooks 22 provided on the front frame 51 in the left-right direction, a force releasing means 56 forcibly flipping the hooks 22 upward and rearward to detach from the seedling box N, and a force releasing means 56. Stopper means 57 which regulates the operation, retracting means 58 for forcibly releasing the stopper means 57 to retract the hooking tool 22, and returning means 59 for returning the forcible disengaging means 56 to a position where the hooking tool 22 is substantially suspended. And a control means 65 for controlling the operation.

The front frame 51 is shaped like a letter when viewed from the side, and 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 supporting wheel 67 is provided with a supporting rod 67A inserted through a holder 67B fixed to the outer surface of the front frame 51, and is mounted so that its height can be adjusted.

The support wheel 67 allows the height and posture of the hook 22 with respect to the ground to be adjusted, and the front frame 5 can be adjusted.
1 swings around the horizontal axis 66, and the hook 22 can follow the unevenness of the ground to pick up the seedling box. The support ring 67 is located rearward of a hanging claw member 111, which will be described later, of the hook 22 but is displaced in the left-right direction without interfering with each other, and the support rod 67A is bent in the left-right direction to pick up a seedling box N. It is preferable to dispose the inner side of the side edge of the above so as not to abut the adjacent seedling box N.

A plurality of support plates 5 provided on the square pipe 51A
A horizontal horizontal shaft 54 is supported by 1B. Three (or a plurality of other than three) hook members 22 are arranged for one seedling box N, and a rod-shaped member 52 formed of a round bar or the like,
Each of the rod-shaped members 52 has a hook member 111 attached to a lower portion thereof and forming a hook end portion 111A, and a boss member 53 formed by fixing a pipe member or the like on an upper portion of the rod-shaped member 52, and a support shaft 54. A boss member 53 is loosely fitted to the boss so as to be independently swingable.

As shown in FIG. 13, a flat portion 52A and a bifurcated anti-rotation portion 52B are formed at the lower end of the rod member 52, and a screw 52C is fixed to the flat portion 52A. On the other hand, the hanging claw member 111 has a substantially L-shaped claw end portion 111A protruding in the front-rear direction at both ends of the bar member, and a flat portion 111B formed at the central portion.
1B is fitted to the screw 52C of the rod-shaped member 52 and faces the flat portion 52A, and the middle portion of the hook member 111 is engaged with the forked stopper 52B, and the wing nut 112 is screwed onto the screw 52C. By fitting, the hanging claw member 111 is attached and fixed to the rod-shaped member 52.

One of the substantially L-shaped claw ends 111A at both ends of the hanging claw member 111 has a protruding length longer than the other, and the wing nut 112 is loosened to hang the screw claw member 111 around the screw 52C. By rotating 180 degrees (vertical upside down), it can be selectively arranged at a position (lower side) where it hooks with the seedling box N. The hook claw end portion 111 </ b> A having different lengths at both ends of the hook claw member 111, the rotating structure of the hook claw member 111, and the like constitute the hook claw changing unit 110 that can change the peripheral hooking length. . In the hanging claw member 111, four bars having the claw end portions 111A are arranged in a cross shape or three bars are arranged with a phase shift of 120 degrees to form four or three claw end portions 111A. Alternatively, the rotation stopping portion 52B may be formed on the hanging claw member 111.

The hook 22 is the claw end portion 1 of the hook claw member 111.
With 11A substantially grounded (the state in FIG. 1), the forward and backward transportation mechanism 6 moves forward, and the forward movement of the upper part of the forward and backward transportation mechanism 6 causes the claw end portion 111 to move.
A is hooked on the peripheral edge Na of each seedling box N from below, and the seedling box N does not move in this hooked state (state B in FIG. 1). Moves backward in an arc while hooking the seedling box N and lifts the rear portion of the seedling box N around the front part (Fig. 1,
2, 7). That is, the hook 22 lifts the seedling box N using the component force of the forward power.

The hanging claw member 111 is located above the front part of the front-rear conveying means 18 (or the box aligning means 16) in a state where the seedling box N is lifted (the c-state in FIG. 1). When the hook moves forward, the hook member 111 and the peripheral edge N
When the included angle with a becomes small, and the rocking edge Na swings over a certain angle, the peripheral edge Na abuts on the upper part of the pawl end portion 111A, and the pawl end portion causes the pawl end portion 111A to separate from the peripheral edge Na (natural release angle, 1 state (solid line in FIG. 9), the seedling box N is moved forward and backward so that the seedling box N falls (or the box aligning means 16).
Placed on top.

Even if the side-by-side seedling boxes N are misaligned in the front-rear direction and the vertical direction, the ones that can be engaged with the seedling box N among the plurality of hooks 22 can be individually engaged and lifted up and then separated. The ones that have become Further, when the hanging claw member 111 interferes with the peripheral rib Nb on the lower side of the peripheral edge Na of the seedling box N, the hanging claw member 111 cannot engage with the peripheral edge Na, but at least two hanging claw members 1 are provided.
When 11 engages with the peripheral edge Na, the seedling box N is lifted.

In FIG. 14, when the vertical width of the peripheral edge Na of the seedling box N is short, the claw end 111A used by the hanging claw member 111 may have a short protruding length as described above. If the projection length is long, the projection length is short, and the projection is naturally disengaged with a small swing angle. In such a case, the hanging claw member 111 is turned upside down and the projection length is long (as indicated by the solid line). The length L is longer than the shorter one by the dimension L so that the disengagement due to the lever action is substantially the same position (the same natural disengagement angle) as in the case of the short protrusion.

Before the hook end 111A is disengaged from the peripheral edge Na by the lever action, that is,
Before the swinging angle reaches the natural release angle, the forced release means 5
6 is forcibly flipped up and released (forced release angle). This forced release angle is determined by the hook 2 with respect to the perpendicular.
The included angle of 2 is, for example, 45 to 60 degrees, preferably 50 to 55.
And the range of states C to D in FIG. The lever action may occur during the detachment.

The upper part of the forced disengagement means 56 has a support shaft 5
It has a flip-up member 60 which is pivotally supported by 4 and whose lower portion abuts on the hook 22 in a hanging posture, and a biasing member 61 which biases 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 when viewed from the front, and boss members at both ends thereof are loosely fitted to the support shaft 54, and a contact piece 60A having a triangular side view is fixed to one boss member. Has been done,
The biasing member 61 is formed by loosely fitting a coil spring on a rod connected to the flip-up member 60.

The stopper means 57 has a stopper member 62 supported by a support plate 51B via a shaft 68, and the stopper member 62 is attached by engaging its lower side 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 biasing member 61. The stopper member 62 has an opening lever portion (opening engagement portion) 62A that protrudes rearward and downward so that it can come into contact with the swinging rod-shaped member 52, and the hook 22 is forced from near the forced release angle. While reaching the release angle, the stopper member 62 is swung to release the regulation of the flip-up member 60 and enable the flip-up member 60 to be flipped up by the urging member 61 (from the solid line in FIG. Dotted line condition c).

The stopper member 62 is urged by the pulling member (spring) 63 provided between the opening lever portion 62A and the flip-up member 60 so as to abut the stop member (pin) 69, whereby the contact piece 62 is hit. It is elastically held in a position where it engages with 60A. The evacuation means 58 is
It has a release lever (release member) 58A and an arm portion 58B fixed to a support shaft 70 supported by a support plate 51B. The release lever 58A is provided for each hook 22 and the lower end thereof is L-shaped. It is bent to be engageable with the opening lever portion 62A, only one arm portion 58B is provided on the support shaft 70, and a short rotation arm of the motor (driving source) 64 via the link 71. It is connected to 64A. The motor 64 is attached to the front frame 51 via a mount.

The release lever 58A reciprocally swings by the counterclockwise (reverse) rotation of the motor 64, swings the opening lever portion 62A in the stopper releasing direction when moving in the range shown in FIG. Similar to the case of swinging by the material 52, the stopper member 62 is swung to release the regulation of the flip-up member 60 and the flip-up member 60 is made to flip up.

The returning means 59 is a set lever (set member) 59 fixed to the rotating shaft 72 supported by the support plate 51B.
A set arm 59A is provided for each hook 22 and has an end bent into an L shape so that the set lever 59A can engage with one side of the flip-up member 60. Only one arm 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. The short rotating arm 64A and the long rotating arm 64B are, for example, the motor 6
The output shaft of No. 4 is shaped like a crank, or is formed by fixing arm members to both ends of the output shaft.

The set lever 59A is reciprocally rocked by the clockwise (normal) rotation of the motor 64, and the flip-up member 60 in the flipped-up state (e-state in FIG. 1) is swung downward to form a rod shape. The material 52 is returned by its own weight until it becomes substantially drooping. By this return swing of the flip-up member 60, the stopper member 62 is pulled by the pull member 63 and 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 rotary arm 64.
When B moves in the range shown in FIG. 4, it overruns immediately below the support shaft 54 and moves to the maximum return position (to the position in FIG. 4), whereby the contact portion 60A causes the stopper member 6 to move.
2 can be moved to the lower side to be engaged. Control means 65
Is a control unit (control logic unit) 95 and a motor 64
A sensor 96 for detecting the rotational position, a sensor 65A for detecting that the hooking tool 22 is in the hanging state (a) when the flip-up member 60 is in the set position, and a sensor 65A for detecting that the hooking tool 22 is in the flipping-up state (e) It has a sensor 65B and the like that detects when the lifting member 60 is in the flipped-up position.

The motor 64 is set so as to rotate only once when the switch is actuated, and the sensor 96 is operated by the motor 64.
It detects one reciprocation of a member driven by, and may detect the rotating arms 64A, 64B and the like.
5A or the sensor 65B may be either one, and the hook 22 may be directly detected. The sensors 96, 65
Proximity switch, limit switch,
Various things such as a photo sensor can be used.

Next, the operation of picking up the seedling box N is mainly shown in FIG.
Description will be made based on 10 to 12. The work unit 3 is made to face the side-by-side seedling boxes N and the forward button is pressed to send a forward signal to the work unit 3. At this time, when the sensor 65A detects the flip-up member 60 or the sensor 65B does not detect the flip-up member 60, the hook 22 is in the substantially hanging state (i), so that the work unit 3 is advanced as it is, and otherwise. Then, the motor 64 is rotated 1 forward through the control unit 95, the returning 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 drooping state (a), the forward movement of the working unit 3 is started and the hooking member 111 provided on the rod-shaped member 52 is dragged, and the hook end portion 1 thereof is pulled.
11A is caught in each seedling box N that had been deployed. Then, the rear part of the seedling box N is pulled up around the front end, and the hanging claw member 111 swings upward and backward around the support shaft 54 to a certain angle while drawing an arc trajectory, and immediately before the natural detachment angle,
The rod-shaped member 52 contacts the release lever portion 62A of the stopper member 62 and rotates it (A to C in FIG. 10).

When the stopper member 62 is released, the flip-up member 60 is shocked and flipped up by the elastic force of the urging member 61, forcibly flipping up all the rod-shaped members 52 (A in FIG. 11), The hanging claw portion 52A is removed from the seedling box N. As a result, the rear part of the seedling box N is dropped onto the front-rear transport means 18. In this way, the seedling boxes N are lifted by the plurality of hooks 22 corresponding to the respective seedling boxes N, transferred onto the front-rear transporting means 18, and transported by the front-rear transporting means 18 to the vertical / horizontal transporting mechanism 5. Even if the picking up failure of the seedling box N occurs, it is picked up by the lifting divider 20 moving forward later.

After seeing that the seedling box N is completely placed on the front and rear transportation means 18, press the forward button or the sensor 65B.
The motor 64 is rotated 1 forward after a set time after the flip-up member 60 is detected, 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), the flip-up member 60 is overrun, and then returned to the set position (B to C in FIG. 11), the set lever 59A
Then, the box picking mechanism 11 is caused to perform the seedling box picking operation again.

When the required seedling box N has been collected 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 to
Or the sensor 65B does not detect the flip-up member 60, the hook 22 is in the hanging state B. Therefore, when the work unit 3 is moved backward, the hooking claw member 111 in the dragged state may bite into the ground. Therefore, the motor 64 is reversely rotated by 1 through the control unit 95 to drive the retracting means 58.

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.
To release all the rod-shaped members 52.
Is forcibly flipped up and retracted (A in FIG. 11). In addition,
If there are irregularities or inclinations in the front-rear direction such as unevenness in the side-by-side arrangement of the deployed seedling boxes N, the hooking tool 22 corresponding to each seedling box N and the engaging timing and lifting with a plurality of rod-shaped members 52 are used. Only with a slight difference in timing, engagement can be ensured, and each hook 22 independently transfers the seedling box N to the front-rear transport means 18, so that each seedling box N can be reliably picked up.

Further, even if the ground has irregularities, the height of the hook 22 is corrected by the support wheels 67, and even if the seedling box N has vertical irregularities, the claw end 111A of the hook 22 is dragged. Thus, all the seedling boxes N can be engaged with each other. Further, since the hook 22 engages with and lifts the seedling box N by traveling power, no special actuator is required and there is no moving part near the ground, so that no trouble 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 groups, thereby reducing the number of actuators. It is also necessary to provide the sensor 65A and / or the sensor 65B for each set, omitting this for cost reduction, and when the forward movement unconditionally assumes that the hook 22 is in a substantially drooping posture, press the forward button. The work unit 3 is moved forward or the motor 64 is rotated 1 forward to bring the hook 22 into a substantially hanging posture. When the vehicle is moving backward, the reverse button is pressed to rotate the motor 64 1 backward, and the hook 22 is flipped up. The unit 3 may be moved backward.

FIG. 15 shows a first modification of the hook changing means 110. The difference from the above embodiment is that the screw 5 is used.
2C is oriented in the front-rear direction, and both claw ends 111A having different lengths at both ends of the hanging claw member 111 are projected forward.
By vertically inverting 11
You can change the type.

FIG. 16 shows a modified example of the box pick-up mechanism 11 and a second modified example of the hook changing means 110. The box pick-up mechanism 11 is different from the above embodiment in the forcible release means 5.
6 and the returning means 57 and the like are omitted, and only the hooking tool 22 has a simple structure. Hanging hook changing means 110
Prepares a plurality of hanging claw members 111 having different hooking lengths (projecting lengths) of the claw end portions 111A, and attaches / detaches the upper corner portions of the hanging claw members 111 to / from the rectangular tubular portions 52D below the rod-shaped members 52. It is freely inserted and attached by penetrating the bolt (or pin) 113.

The hook 22 is attached with the claw end 111A of one kind of the hook claw member 111 and is substantially grounded, and the claw end 11 is moved forward as the forward / backward transport mechanism 6 moves forward.
1A is hooked on the peripheral edge Na of each seedling box N from below, and in this hooked state, it makes an arc motion centering on the upper part.
When the seedling box N is lifted by moving the rearward upward arc while hooking, the hook 22 further advances from this state, and the angle between the hook member 111 and the peripheral edge Na decreases, that is, as shown in FIG. In addition, the peripheral edge Na abuts on the upper portion of the claw end portion 111A when rocking over a certain angle (natural detachment angle), and the lever end action causes the claw end portion 111A to move toward the peripheral edge Na.
Then, the seedling box N is placed on the front-rear transport means 18 so as to drop. The claw end 111A that has left the seedling box N shifts in the seedling box N, but after the seedling box N is sent onto the front-rear transporting unit 18, the claw end portion 111A is in a drooping posture by its own weight.

The main unit 4 is shown in FIGS. 18 to 21 and 25, and the delivery mechanism 7 is provided at the front of the main traveling body B2.
Is provided with a box holder support mechanism 12 at the rear part, and a box supply mechanism 8 and a box collection mechanism 9 can be selectively used in the middle part thereof. The work unit 3 is connected to at least one of the left and right sides of the main unit 4 so that the work unit 3 can travel together. The work units 3 for processing the number of seedling boxes N are connected in a side-by-side state, and both work units 3 transfer the seedling boxes N between the horizontal conveying means 5B.

The main traveling machine body B2 has a main body 76 in which a drive source such as an electric motor, a hydraulic pump, an air compressor,
The operation panel and the like are mounted, the left and right crawler traveling units 77 are driven by hydraulic motors, and the vehicle is equipped with the self-propelled device 13B and can be independently traveled and steered. The delivery mechanism 7 is arranged at the center of the pair of left and right work units 3, that is, at the one-side base point position of the horizontal transport means 5B in the raised position, and the horizontal transport means 5B and the distribution means 7A for delivering the seedling boxes 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 comprises a roller conveyor 82 having a plurality of rotating rollers 81 with built-in motors, and a chain conveyor having claws 83 on a distribution frame 80 provided on the front projecting portion 76a at the front of the machine body 76. 84 are provided. Seedling box N supplied from the rear onto the feeding means 7B
Is fed by a roller until it hits the claw 83 of the chain conveyor 84, and is pushed by the claw 83 of the chain conveyor 84 until it comes into contact with a stopper 85 provided at the front portion of the distribution frame 80.

In this state, the seedling box N has a roller conveyor 82.
When the roller conveyor 82 is completely transferred onto the upper and lower sides, the roller conveyor 82 is rotated normally and reversely, so that the lateral conveying means 5B of each of the left and right work units 3 is conveyed.
Distributed on top. From lateral conveying means 5B to feeding means 7B
The conveyance of the seedling box N to the reverse of the above operation, the chain conveyor 84 pushes the seedling box N taken in by the roller conveyor 82 onto the roller by the claw.

A front protrusion 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 to the delivery mechanism 7 one by one, and a machine base 74 that is detachably attached to the machine body 76, Conveying conveyor means 75 formed by a wheel conveyor or a roller conveyor arranged on the machine base 74, and a frame frame 7 arranged across the conveying conveyor means 75.
8, box holding means (not shown) and lifting means (not shown) for moving up and down to a position where the box holding means 79 holds the seedling box N on the transfer conveyor means 75.

The frame frame 78 is open on the rear side and, for example, seedling boxes N stacked in 30 stages can be inserted from the rear side while being placed on the transport conveyor means 75. The laminated 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 seedling box N at the lowest position is conveyed. It is placed on the conveyor means 75 again and conveyed forward.

The box holder support mechanism 12 includes, for example, box holders 14 to 1 each containing a plurality of rows of seedling boxes N stacked in 30 stages.
The stacked seedling boxes N in the row can be lifted and sent to the front transport conveyor means 75, and the box support 14 can be laterally moved through the lateral movement mechanism to send the stacked seedling boxes N in the adjacent row. ing. In place of the stacked seedling boxes N, a box collection frame body 15 for storing the seedling boxes N in a multi-tiered manner at upper and lower intervals can be placed on the box receiving body 14, and at the time of collecting the seedling boxes. The box collection frame body 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 receiving the seedling boxes N one by one from the delivery mechanism 7 and collecting the seedling boxes N in a vertical multi-stage manner. Instead of the box feeding mechanism 8, the box collecting mechanism 9 is mounted on the machine body 76. To be done. The box collecting mechanism 9 is provided with a machine frame 89 which is detachably attached to the machine body 76, a conveyer conveyor means 90, a frame frame 91 arranged across the conveyer conveyor means 90, and supported by the frame frame 91. And a multistage box raising means 92 for lifting the seedling boxes N having growing seedlings on the conveying conveyor means 90 one by one, and all the seedling boxes N on this multistage box raising means 92 in two stages to the rear. And pusher means 93 that pushes it out.

A frame 9 is formed by the transfer conveyor means 90.
The seedling box N is loaded into the box 1 and the box multistage lifting means 92 is used to set the seed box 1 to 1
When the required number of seedling boxes N are stored and lifted one by one, the pusher means 93 moves the seedling boxes N backward to push all the seedling boxes N to the rear of the frame 91 at the same time and transfer them to the box collecting frame 15. To do. Next, a description will be given of a seedling box collecting method in the case where the seedling box ground processing machine shown in the above-mentioned embodiment is set as a seedling box collecting machine by setting the box collecting mechanism 9 in the main unit 4 in a usable state.

Only the working unit 3 is moved to the end of the developing area in the house, the box picking mechanism 11 is opposed to the expanded seedling boxes N of a total of seven rows in one row, and the hooking device 22 is moved to the seedling box. It is hooked from the lower side to the peripheral edge Na of N, further lifted by an upward rearward circular arc swing, placed on the front-rear conveying means 18 of the front-rear conveying mechanism 6, and conveyed backward by the operation of the front-rear conveying means 18. The front-rear transporting means 18 on which all the seedling boxes N are placed and the vertical transporting means 5A are operated to transfer the seedling boxes N to the vertical transporting means 5A, and the horizontal transporting means 5B which stands by at a position slightly lower than the overlapping position. To raise the seedling box N, and after reaching the raised position, the lateral conveying means 5B is caused to laterally feed, and the roller conveyor 8 of the distributing means 7A of the delivery mechanism 7 located at the same height.
The sheets are delivered one by one onto the top 2 and further moved by the feeding means 7B onto the transport conveyor means 90 of the rear box collecting mechanism 9.

From the front / rear transfer means 18 to the vertical / horizontal transfer mechanism 5
After the seedling box N has been delivered to the work unit 3, the work 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 transfer on the front-rear transport means 18,
It is performed without stopping the forward movement of the work unit 3.
The first to third rows of the expanded seedling box N are collected only by the working unit 3, and after the main unit 4 can be connected in the house, the main unit 4 is connected to the working unit 3 to pick up the seedlings. 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-back direction (moving direction of the working unit 3), it may be unfolded in the left-right direction and may be conveyed on the working unit 3 in the left-right direction. Further, the front-rear transporting means 18 is attached to the machine body 25 via the horizontal moving means so that one row of the seedling boxes N can be collected while the front-rear transporting means 18 is moved forward without moving the working unit 3. May be.

The box pick-up mechanism 11 is a dedicated seedling box collection device and is preferably removed from the support frame 41 when the seedling box is unfolded, but the hooking device 22 remains attached.
May be retracted upward. However, the lifting divider 20 is removed from the box aligning means 16. Further, the working unit 3 can be formed in a size capable of simultaneously processing 1 to 6 or 8 or more seedling boxes N, and the working unit 3 that simultaneously processes 3 or more seedlings N can be used alone or in the main unit 4. However, the one for processing one or two sheets is used by being connected to the working unit 3 connected to the main unit 4.

[0075]

According to the present invention described in detail above, the hooking device 2 is provided.
After the seedling box N is hooked by the back-and-forth swing of 2, the back-and-forth can be reliably transferred to the front-rear transport mechanism 6 by swinging in an arc backward and upward, and the picking operation can be performed smoothly and in a short time. Even with seedling boxes N having different widths, the hook changing means 11
By changing the peripheral hooking length of the hooking device 22 with 0, it is possible to normally engage and pick up.

Further, a plurality of hook members 22 each independently swingable with respect to one seedling box N and a substantially L-shaped claw end portion 111A attached to the lower part of each rod member 52 are provided. The formed hook member 111 and the hook member 1
11 is provided with a plurality of claw end portions 111A having different hooking lengths to be replaced and arranged at the hooking position, or two hooking end portions 111A having different hooking lengths are formed at the upper and lower ends of the hooking claw member 111. Since it is arranged upside down, it is possible to properly engage and pick up seedling boxes N having different vertical widths of the peripheral edge Na.

Further, the claw member 111 is provided below the rod-shaped member 52.
Is detachably attached and a plurality of hanging claw members 111 having different hooking lengths of the claw end portion 111A are used for replacement, so that the seedling boxes N having different vertical widths of the peripheral edge Na can be normally engaged and picked up.

[Brief description of drawings]

FIG. 1 is a side view illustrating 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-back transport mechanism.

FIG. 3 is a side view for explaining the flip-up operation of the hooking device.

FIG. 4 is a side view illustrating a returning operation of the hooking device.

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

FIG. 6 is a plan view of a box pick-up mechanism and a front-back 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 picking mechanism.

FIG. 9 is a cross-sectional side view showing the operation of removing the seedling box from the hooking device.

FIG. 10 is an explanatory diagram showing the movement of the hooking device from the seedling box engagement to the flipping up.

FIG. 11 is an explanatory diagram showing the movement of the flip-up member from the time of flipping up to the middle of returning.

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

FIG. 13 is an enlarged perspective view of a hooking tool.

FIG. 14 is an explanatory diagram showing a detached state of the hooking tool when the vertical width of the peripheral edge of the seedling box is different.

FIG. 15 is a perspective view showing a first modified example of the hanging claw changing means.

FIG. 16 is a side view showing a modified example of the box pick-up mechanism and a second modified example of the hanging claw changing means.

FIG. 17 is a perspective view of a lifting device.

FIG. 18 is a side view showing a separated state of a seedling box deployment / collection machine as a seedling box ground processing machine.

FIG. 19 is a plan view of the same.

FIG. 20 is an overall side view of the seedling box collecting machine.

FIG. 21 is a plan view of a front center portion of the seedling box ground processing machine.

FIG. 22 is a side view of the work unit.

FIG. 23 is a plan view of a vertical / horizontal transport mechanism of the work unit.

FIG. 24 is a rear view of the vertical / horizontal transport mechanism of the working unit.

25 is a cross-sectional view taken along line XX of FIG.

[Explanation of symbols]

A2 Working traveling machine B2 Main traveling aircraft 3 work units 4 main unit 6 Front-rear transport mechanism 11 Box picking mechanism 18 Front-rear transportation means 22 Hook 110 Hanging hook changing means 111 hook member 111A claw end N seedling box Na peripheral edge

Claims (4)

(57) [Claims] 1. A work traveling machine body (A2) is supported together with a front-rear transport mechanism (6), and a peripheral edge (Na) of a seedling box (N) spread on the ground is hooked and lifted and on the front-rear transport mechanism (6). A front frame (51) extending to the front upper part of the front-rear transport mechanism (6), which is a box pick-up mechanism of a seedling box ground processing machine to be delivered to the front frame (5).
The upper part is supported swingably back and forth on the front part of 1), and the forward movement of this upper part causes the lower hanging claw member (111) to hook the peripheral edge (Na) of the seedling box (N) from below and center the upper part. And a hooking device (22) for lifting the seedling box (N) by circularly moving upward and backward, and the hooking device (22) has a hooking claw changing means (1) capable of changing a peripheral hooking length.
10) A box pick-up mechanism of a seedling box ground processing machine, characterized by having. 2. The hooking device (22) comprises a rod-shaped member (52) which is independently swingable with respect to one seedling box (N).
And a hanging claw member (111) attached to the lower part of each rod-shaped member (52) and having a substantially L-shaped claw end (111A), and the hanging claw member (111) has a hooking length. Having a plurality of different claw ends (111A), a rod-shaped member (52)
2. The box pick-up mechanism of the seedling box ground processing machine according to claim 1, wherein each claw end portion (111A) is mounted so as to be replaceable at a hooking position. 3. The hooking device (22) has a plurality of rod-like members (52) which are independently swingable with respect to one seedling box (N), and which are hooked at the upper and lower ends and have different lengths. Hook member (11) formed with two substantially L-shaped claw ends (111A)
2. The box pick-up mechanism for a seedling box ground processing machine according to claim 1, wherein 1) is attached so that it can be reversed upside down. 4. The hooking device (22) has a substantially L-shaped claw end (111A) formed on each lower portion of a rod-shaped member (52) that can swing independently with respect to one seedling box (N). ) Is detachably attached to the claw end (1).
11A) a plurality of hooking members (1
11. The box pick-up mechanism of the seedling box ground processing machine according to claim 1, wherein 11) is replaceable.