JP3435440B2 - Seedling container stacking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to transplantation and cultivation of agricultural crops.
The present invention relates to a stacking device for stacking seedling containers on a pallet when storing and transporting seedlings taken out of a seedbed in a seedling container. 2. Description of the Related Art A nursery box as a seedling container is picked up, collected, and lifted by a lifting / lowering device when it is collected from a nursery bed, as shown in Japanese Patent Application Laid-Open No. 9-205890. 2. Description of the Related Art There is known an elevating device in which a pair of conveying belts is provided with projections at predetermined intervals to lift and hold both bottoms of a seedling raising box. The elevating device extrudes a plurality of seedling boxes that have been stacked upward onto a cart at the same time by using a reloading device and reloads them. [0003] In transplantation cultivation of sugar beet (beet radish), a heavy paper tube seedling with a large amount of soil is used, and the seedling is stored in a seedling transport container as a seedling container and is used for transplantation.
No. 4-37371 and Patent No. 2652508 in the nursery
No. 2,537,452, which divides the longitudinal direction of a paper tube seedling into two by a splitting machine as shown in the above-mentioned section, stores the seedlings in a seedling transport container, transports the seedlings from the seedbed to the field, and supplies them to the transplanting machine. There is known a seedling transport container that can be transferred and transferred by simply placing the seedling transport container containing the seedlings on the seedling mounting portion. The seedling transport containers are manually or generally crane-shaped on a pallet, stacked in order from the bottom, and transported from a seedbed to a field by a truck or the like. The seedling container lifting and lowering device of the prior art described above holds and successively lifts the seedling containers, and the individual seedling containers are separated from each other. For this reason, the trolley on which the seedling containers are to be replaced requires as many shelves as the number of lifted seedling containers, which complicates the structure of the trolley. It is also conceivable to lift individual seedling containers one by one from the bottom so as not to be separated from each other. It is impossible in terms of. If the seedling containers are lifted up with a wire rope with a general crane-shaped one and are to be stacked, if the seedling containers are stacked on the seedling container without being accurately aligned, they will fall during transportation. In addition, if it is lifted by a wire and moved in the horizontal direction, the seedling container shakes. Therefore, positioning is difficult and time-consuming, and care must be taken so as not to collide with the seedlings of the stacked seedling containers, which is inefficient. Therefore, attempts have been made to fix the seedling containers with vertical guide rails so as to make the positioning of the seedling containers simple and to prevent shaking. However, since the seedling containers storing the seedlings divided by the dividing machine are inclined, However, it is not possible to hold a tilted seedling container with the one fixed so that it can only move up and down by the vertical guide rail. The present invention solves the above problems,
An object of the present invention is to provide a stacking device capable of accurately aligning a seedling container on a seedling container and holding an inclined seedling container. According to a first aspect of the present invention, there is provided an apparatus for stacking seedling containers, comprising a lifting device 40 for holding and lifting a seedling container C for accommodating seedlings P. A horizontal moving device 20 for horizontally moving is provided above the lifting device 40, and the horizontal moving device 20 is provided with a hoisting device 30 for moving the lifting device 40 up and down, and a pair of guides for guiding the horizontal movement of the horizontal moving device 20 is provided. A horizontal rail 15 is provided, and in the stacking device 10 for holding, lifting, moving and stacking the seedling containers C, a pair of vertical guides 60 for guiding the vertical movement of the lifting device 40 is provided by the lifting device 40 and the horizontal moving device 20. The lifting device 40 rotates only in a predetermined direction.
It is fixed to the vertical guide body 60 so as to be freely displaceable . [0010] According to the first aspect of the present invention, the lifting device 40
A pair of up-and-down guides 60 for guiding the up-and-down movement is provided between the lifting device 40 and the horizontal moving device 20, and the lifting device 40 moves in a predetermined direction.
Because it was pivotally displaced and stopped on the vertical guide body 60 ,
The lifting device 40 can be tilted corresponding to the tilted seedling container C. An embodiment of the present invention will be described below with reference to the drawings. [0012] As a seedling P, a paper tube seedling in a paper tube nursery container is shown. This paper tube nursery container is formed by laminating paper tubes with open tops and bottoms. When the seedlings are sown in the paper cylinder and sown, the seedlings P grow and become paper cylinder seedlings. [0013] The seedlings P, which have completed the raising of seedlings, are taken out of the seedbed by a seedling transporter having a large number of needles, wheels and handles arranged in a line in a fork shape. The seedlings P picked up by the seedling carrier are placed on the mounting table of the splitter 1 and split into two. The splitter 1 transfers the seedlings P to the seedling container C by separating the seedlings P by about 10 cm and dividing the seedlings into two pieces, and then inclining the mounting table and sliding the seedlings P by their own weight.
At this time, the seedling container C is mounted at an inclination that matches the inclination of the mounting table so as not to damage the seedlings P. The seedling container C stores the seedlings P split by the splitter 1 and transports the seedlings from the seedbed to the field and supplies them to the transplanter. The bottom plate on which the seedlings P are placed and the storages provided on the left and right sides of the bottom plate A pair of handles that are higher than the seedlings P to be prepared and a placement receiver that is placed on the handles when stacked on the lower ends of the pair of handles are provided. The pair of handles have a shape in which a thin round bar is bent into a substantially U-shape and the opening thereof faces downward, and the upper side thereof is formed in a straight line so that the operator can stably hold by hand or lift with the lifting device 40. You can have it. The placement receiver is provided with a guide portion that can be correctly placed on the handle even if the positions of the seedling containers C to be stacked are slightly different. Next, a seedling container C containing the seedlings P
A stacking device 10 for arranging and stacking on a pallet 2 will be described. The stacking device 10 includes two seedling containers C
Can be simultaneously lifted and placed at the same time, and can be stacked on the pallet 2 in two rows left and right and up to five rows in a plurality of rows back and forth, and the next seedling container C on the pallet 2 They are stacked one after another. In FIG. 1, reference numeral 10 denotes a stacking device. The stacking device 10 is formed in a substantially rectangular frame shape in plan view, and is placed on the ground E adjacent to the nursery. A flat pallet 2 for stacking the seedling containers C is placed on the ground E in the stacking device 10, and the splitter 1 is placed on the ground E at one end of the stacking device 10. A pair of rear pillars 11 are vertically provided on both sides of the stacking device 10 on the splitting machine 1 side, and a freely rotating wheel 12 for moving the stacking device 10 is provided at a lower end of the rear pillar 11. A pair of front pillars 13 is vertically provided on both sides opposite to the splitter 1 side, and an anchor 14 is provided at the lower end of the front pillar 13 to pierce and fix the ground E so that the stacking device 10 does not move. A pair of horizontal rails 15 are provided between the left and right front pillars 13 and the upper part of the rear pillars 11 in the front-rear direction, and the height of the horizontal rails 15 is higher than the height of the worker. A horizontal moving device 20 is provided between the upper portions of the pair of horizontal rails 15, and the horizontal moving device 20 horizontally moves the lifting device 40. The horizontal moving device 20 is guided along the horizontal rail 15 to move in the front-rear direction. To move horizontally freely. As the horizontal moving device 20, a girder 21 which is horizontally long in the left-right direction and formed in a substantially rectangular frame shape in plan view is provided, and a pair of saddles 22 long in the front-rear direction are provided at both ends of the girder 21. A roller 23 that freely rotates in contact with the upper surface of the horizontal rail 15 from the side thereof is provided before and after, and a roller 24 that freely rotates in contact with the inner side surface of the horizontal rail 15 from the lower part thereof is provided. Rollers 23 and 24 roll on the upper surface and the inner side surface of the horizontal rail 15 so that the horizontal moving device 20 is moved.
Moves freely in the front-rear direction, and moves between the front pillar 13 and the rear pillar 11. Below the left and right ends of the girder 21, a pair of guide bearings 25 for vertically guiding the vertical guide body 60 are provided. A hoisting device 30 for moving the lifting device 40 up and down is provided below the upper surface of the central part of the girder 21 of the horizontal moving device 20. The hoisting device 30 includes a forward / reverse rotatable electric motor 31 having a reduction gear and a brake, a winding drum 32 fitted on the shaft of the motor 31, and a lower lifting device 40 wound around the winding drum 32.
33 as a steel wire rope to hang
Then, a weight 34 is provided at the lower end of the wire 33. Weight
34 is made of a heavy material such as steel and has a substantially cylindrical shape that is long in the horizontal direction. A wire 33 is wound around the center and fixed, and the protrusions at both ends of the weight 34 move the lifting device 40 only a predetermined distance in the vertical direction. Stop freely. A lifting device 40 as a hand unit for holding and lifting the seedling container C for storing the seedlings P is mounted on a horizontal moving device 20.
Is provided horizontally long in the left-right direction below. The lifting device 40 is provided with a lifting device frame 41 having a substantially rectangular shape in plan view. The lifting device frame 41 is provided horizontally with a length substantially equal to the length in the longitudinal direction of the seedling containers C arranged side by side. The left half of the lifting device frame 41 corresponds to the left seedling container C, and the right half corresponds to the right seedling container C. On the front and rear sides of the lifting device frame 41, left and right hangers 4 for lifting and holding the seedling containers C arranged in parallel on the left and right sides.
2 and 43 are provided. The left and right hangers 42, 43 are provided for one seedling container C, the left hanger 42 holds the left seedling container C, and the right hanger 43 is the right seedling container C.
Hold. The left and right hangers 42, 43 are stopped so that the middle part in the vertical direction can be freely rotated by pins.
The lower end of 3 rotates left and right. Left and right hanger 42,4
The lower end of 3 is formed as a hook cut out to hold a pair of handles of the seedling container C. On the upper surface of the lifting device frame 41, left and right hangers 4 are provided.
Left and right levers 48 and 49 for rotating the 2 and 43 are provided. The left and right levers 48, 49 have a substantially U-shape with the opening facing downward, and are stopped by a support on the upper surface of the lifting device frame 41 so as to be freely rotated by pins. The upper part of the pin of the left lever 48 and the left hanger on the left side
The link between the upper part of the left lever 48 and the upper part of the left hanger 42 on the right side are connected by the link 45, and the upper part of the pin on the right lever 49 and the right hanger on the right side. 43
Are connected by a link 46, and the lower part of the pin of the right lever 49 and the upper part of the right hanger 43 on the left are connected by a link 47. Links 44, 45, 46, 47 are left and right hangers 4 each
The pins 2 and 43 and the left and right levers 48 and 49 are stopped so as to freely rotate by pins. When the left and right levers 48 and 49 are rotated, the left and right hangers 42 and 43 are rotated. At the position where the left and right levers 48 and 49 are rotated and moved substantially vertically, the hooks at the lower ends of the left and right hangers 42 and 43 are closed toward the center of the seedling container C, and the handle of the seedling container C is opened. Position. At the position where the left and right levers 48 and 49 are tilted inward and rotated, the hooks at the lower ends of the left and right hangers 42 and 43 are opened in the outward direction of the seedling container C, and hold the handle of the seedling container C. That is, left and right lever 4
When 8 and 49 are tilted inward, the left and right hangers 42 and 43 rotate from the inside of the seedling container C to the outside and hold the handle. Here, the left and right levers 48 and 49 and the left and right hangers
42 and 43 are connected by independent links 44, 45, 46 and 47, respectively.
Only the left hanger 42 is rotated by the left lever 48 in the opening direction to hold the left seedling container C, and only the right hanger 43 is rotated by the right lever 49 in the opening direction to hold the right seedling container C. Inside the left and right levers 48 and 49 on the upper surface of the lifting device frame 41, safety hooks 50 and 51 for fixing the left and right levers 48 and 49 at predetermined positions where the left and right hangers 42 and 43 are opened are provided. The lower ends of the safety hooks 50 and 51 are stopped by a pin on a support on the upper surface of the lifting device frame 41 so as to be freely rotatable, and are urged by a tension spring in a direction of falling outward. Has hooks cut out to lock the upper ends of the left and right levers 48, 49. And left and right lever 4
When 8 and 49 are knocked down to hold seedling container C, safety hook 5
The hooks 0 and 51 automatically lock the left and right levers 48 and 49. To release the locking of the safety hooks 50 and 51, the safety hooks 50 and 51 may be lifted inward by overcoming the bias of the tension spring. On the upper surface of the center of the lifting device frame 41, the hoisting device 30
And a pair of connecting fittings 52 for connecting with the connecting member. A pair of connecting brackets
52 is long upward and is provided with a predetermined distance between the weights 34. A long hole is opened vertically in the connecting bracket 52, and the protrusions at both ends of the weight 34 fit into the long hole,
The weight 34 is movable only in the vertical direction by the distance of the elongated hole. Guides for guiding the lifting device 40 to the handle of the seedling container C at corners of the left and right side surfaces and the rear side surface of the lifting device frame 41.
53 will be provided. A pair of guide bearings is provided at each of the left and right end portions of the upper surface of the lifting device frame 41 for vertically stopping the guides 60 so as to be displaceable.
54 will be provided. Between the left and right ends of the lifting device frame 41 of the lifting device 40 and a pair of guide bearings 25 of the horizontal moving device 20, a pair of vertical guides 60 for guiding the lifting device 40 up and down is provided. . The vertical guide body 60 is composed of an upper pipe 61 and a lower pipe 63 which are elongated in the vertical direction, and the inner diameter of the upper pipe 61 is slightly larger than the outer diameter of the lower pipe 63. Then, the lower pipe 63 fits into the upper pipe 61, and has such a length that the fitting does not come off even when the lifting device 40 is lowered to the lowermost end. As a result, the upper pipe 61 is movable only in the vertical direction by the guide bearing 25, and the lower pipe 63 is movable only in the vertical direction by the upper pipe 61. At the upper end of the upper pipe 61, a retaining plate 62 having a diameter larger than the outer diameter of the upper pipe 61 is provided.
The retaining plate 62 is prevented from falling down when it comes into contact with 1. Further, at the position where the lifting device 40 is raised to the uppermost end, the lower pipe 63 completely fits into the upper pipe 61, and the upper pipe 61 projects above the lifting device frame 41. At the lower end of the lower pipe 63, a round tubular locking shaft 64 is provided which protrudes in the left-right direction and is horizontally provided.
It is rotatably fitted into the hole of the guide support 54 of 0. As a result, the lifting device 40 can be moved vertically and can be displaced by rotating in the front-rear direction.
Is locked. The inner space between the pair of guides 54 of the lifting device 40 is larger than the outer diameter of the lower pipe 63 and the upper pipe 61 of the upper and lower guides 60. To move a predetermined distance. Also, the length of the locking shaft 64,
The length is such that the guide bearing 54 does not come off even if it moves. Then, even if there are some errors in the left and right positions of the seedling container C, the lifting device 40 can be moved in accordance therewith. A pair of guide bearings 54 of the lifting device 40 is provided with a stopper 55 that hits the lower pipe 63 of the vertical guide body 60 that has been rotated and displaced by a predetermined angle.
Is set to match the angle of the tilted seedling container C placed on the dividing machine 1. Next, the operation will be described together with the method of use. The tilted seedling container C placed on the dividing machine 1
When the seedlings P are stored in the seedling container C, the vertical moving body 60 is manually pushed by the horizontal moving device 20 and the lifting device is moved to the seedling container C on the splitter 1.
Move 40 together. The motor 31 is rotated by the switch, and the wire 33 wound around the winding drum 32 is rewound.
40 is lowered along the vertical guide body 60. Leaning seedling container C
The lifting device 40 is manually rotated back to adjust
Guide 53 to the holder of the seedling container C. At this time, a pair of vertical guides 60 for guiding the vertical movement of the lifting device 40 is provided between the lifting device 40 and the horizontal moving device 20, and the lifting device 40 rotates only in a predetermined direction. Displaceable
The lifting device 40 can be tilted corresponding to the tilted seedling container C, so that the positioning can be performed accurately and the tilted seedling container C can be held. When the left and right levers 48 and 49 are tilted inward, the hooks at the lower ends of the left and right hangers 42 and 43 are opened outward of the seedling container C to hold the handle of the seedling container C. When the left and right levers 48 and 49 are defeated, the safety hooks 50 and 51 are
Automatically locks 8,49. The motor 31 is rotated by the switch, and the wire 33 wound around the winding drum 32 is wound up.
40 is raised along the vertical guide body 60. Horizontal moving device 20
As a result, the vertical guide 60 is pushed by hand, and the lifting device 40 is moved to the forefront of the pallet 2. The motor 31 is rotated by the switch, and the wire 33 wound around the winding drum 32 is rewound.
40 is lowered along the vertical guide 60, and the seedling container C is lowered onto the pallet 2. At this time, the pair of vertical guides 60 for guiding the vertical movement of the lifting device 40 is provided between the lifting device 40 and the horizontal moving device 20, so that the seedling container C can be accurately positioned without shaking. it can. When the safety hooks 50 and 51 are lifted inward to release the locking and the left and right levers 48 and 49 are turned outward, the left and right hanger
The hooks at the lower ends of 42 and 43 close toward the center of the seedling container C to open the handle of the seedling container C. The motor 31 is rotated by the switch, the wire 33 wound around the winding drum 32 is wound up, and the lifting device 40 is raised along the vertical guide body 60. The above operation is repeated, and the seedling containers C held by the lifting device 40 are lowered onto the seedling containers C on the pallet 2 and stacked up to a predetermined number of levels. When the seedling containers C are stacked to a predetermined number of stages, the seedling containers C are similarly stacked on the pallets 2 in the adjacent vacant spaces, and are sequentially stacked in the direction of the splitter 1. When the seedling container C is fully loaded on the pallet 2, the pallet 2 is taken out of the stacking device 10 by a lift and loaded on a truck. Empty pallet 2 loading device 10
And repeat the same operation. When the seedling container C is fully loaded on the truck, it is transported to the field and used for transplantation. At the end of the operation, the anchor 14 is pulled out and the stacking device 10 is moved by the wheels 12 when the nursery bed and the stacking device 10 are far from each other. In the above embodiment, the example of lifting the hand of the seedling container C by the left and right hangers 42, 43 of the lifting device 40 has been described. The lifting device 40 may be one that holds and lifts the seedling container C from below. The hoisting device 30 comprises a motor 31 and a wire.
Although the example using 33 has been shown, the hoisting device 30 may be an actuator such as a manual winch, a hydraulic cylinder, or an electric cylinder. Although the upper and lower guides 60 have been described by using two upper pipes 61 and lower pipes 63, each of which has a shape of a round tube elongated in the vertical direction, rails having various cross-sectional shapes may be used. It is also possible to divide into more than books. According to the first aspect of the present invention, a pair of vertical guides for guiding the vertical movement of the lifting device is provided between the lifting device and the horizontal moving device, and the lifting device is moved in a predetermined direction. Only to rotate
Since the lifting device can be tilted corresponding to the tilted seedling container, the positioning can be performed accurately and the tilted seedling container can be held.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing one embodiment of a seedling container stacking device. FIG. 2 is a front view thereof. FIG. 3 is a view showing an operation state in which a part of FIG. 1 is cut away. FIG. 4 is a partially enlarged plan view showing a main part of FIG. 1; FIG. 5 is a partially enlarged view showing a main part of FIG. 3; FIG. 6 is a partially enlarged view showing a main part of FIG. 2; FIG. 7 is a view showing another operation state of FIG. 6; FIG. 8 is a partially enlarged view showing a main part of FIG. 1; FIG. 9 is a view showing another operation state of FIG. 8; FIG. 10 is a partially enlarged view showing a main part of FIG. 1; FIG. 11 is a partially enlarged view of FIG. 6 with a part cut away. [Description of Signs] 10 Loading device 15 Horizontal rail 20 Horizontal moving device 30 Hoisting device 40 Lifting device 60 Vertical guide C Seedling container P Seedling

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01G 9/00 B65G 57/03

Claims (1)

(57) [Claims 1] A lifting device for holding and raising a seedling container for storing seedlings is provided, and a horizontal moving device for horizontally moving the lifting device is provided above the lifting device. The moving device is provided with a hoisting device that moves the lifting device up and down, a pair of horizontal rails is provided to guide the horizontal movement of the horizontal moving device, and the lifting device that holds, lifts, moves, and stacks the seedling containers. A pair of vertical guides for guiding the vertical movement of the device is provided between the lifting device and the horizontal moving device, and the lifting device moves in a predetermined direction.
A stacking device for seedling containers that is pivoted only and is freely displaceable and is fixed to the vertical guide .