JPH056723Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a transplanter that transplants seedlings grown in a nursery into a main field, and in particular, the invention relates to a transplanter that transplants seedlings grown in a nursery into a main field. This invention relates to a seedling supply conveyor in a seedling supply section that supplies seedlings to a plant. Conventional technology As a seedling supply conveyor for this kind of conventional transplanting machine, as for a transplanting machine for two rows, Japanese Patent Application Laid-Open No. 58-86008
There is a known method known as "Seedling feeding device for transplanting machine" in which the lateral direction of the moving direction of the machine body is set as the seedling conveying direction and the conveying end of the seedling feeding conveyor is directed toward the center of the machine body. According to this method, the length of the seedling supply conveyor per row can be increased, but the width of the machine body becomes larger. In addition, in the same way as above, as a transplanter for two rows, Japanese Patent Application Laid-Open No. 61-100111 "Seedling selection and supply device for transplanter" was developed by moving the starting end of the seedling supply conveyor toward the center of the machine in order to eliminate the above-mentioned drawbacks. A method is known in which the seedlings are transported in a direction away from each other. According to this method, the length of the seedling supply conveyor per row can be increased to some extent, and the width of the machine body can also be made approximately equal to the length of the seedling supply conveyor. This seedling supply conveyor has a pair of conveyor belts whose conveyance start ends are adjacent to each other, and one seedling supply operator can supply seedlings to both conveyor belts from in front of the conveyor start ends of the pair of conveyor belts. A human seedling feeder can feed seedlings to the conveyor belts from each side of the pair of conveyor belts. In addition, as a ``pot seedling transplanter'' published in Japanese Patent Publication No. 59-186017, the seedlings grown in neatly arranged seedling containers are taken out one row at a time, and the multiple seedlings are transported in a direction that separates them from each other. A method is known in which a plurality of seedlings are fed onto a seedling supply conveyor, divided into two, and then fed to two planting sections. According to this method, it is possible to automate the removal of seedlings from the container for raising seedlings, and 2
It becomes possible to plant rows. Problems to be Solved by the Invention The seedling supply conveyor of the transplanter as in the prior art has the following problems. The furrow distance, which is the horizontal seedling planting interval in the direction of movement of the machine, varies depending on the user's convenience, even for one type of crop. Therefore, a transplanter that plants two or more rows at once must be able to change the row spacing. In such a transplanter, the seedling supply section and the seedling planting section for multiple rows are arranged in parallel in the direction of movement of the machine, and the seedling supply section and the seedling planting section are integrally arranged horizontally in the direction of movement of the machine. It is possible to move in the direction and change the distance between the ridges. Therefore, the adjacent conveyance starting ends of a pair of seedling supply conveyors must not touch each other at the narrowest range of furrows that can be changed; In this case, the starting ends of the conveyor belts are spaced apart by the range of the changeable ridges. Therefore, when planting in wide furrows, the following problems arose. When a single seedling supply worker feeds seedlings to both conveyor belts from in front of the conveyance start end of a pair of conveyor belts, there is a space in front of the worker where there is no conveyor belt, so the range of seedling supply is limited. There was a problem in that the plants grew larger from side to side, making it difficult to supply seedlings. Also, when two seedling supply workers feed seedlings to a pair of conveyor belts from each side, there is a space at the beginning of the conveyor belt, so it is necessary to replace the conveyor belt with a longer conveyor belt. However, there was a problem in that the conveyor belt itself would have to be replaced with a longer one. Furthermore, the seedlings grown in the neatly arranged seedling containers are taken out one row at a time, and the multiple seedlings are fed onto a seedling supply conveyor that transports the seedlings in a direction away from each other, dividing the multiple seedlings into two. In the method of supplying seedlings to a two-row planting area, if the starting end of the seedling supply conveyor is far apart, the seedlings will fall from that space, so there is a problem that it is not possible to change the row spacing. . Therefore, the present invention is a.
In the seedling supply conveyor of the conventionally known transplanting machine described in the requirements of ~f, even in the furrow of the widest range of furrows that can be changed in the transplanting machine, the seedling supplying part is adjacent to the conveyor belt. To provide a seedling supply conveyor that does not create a space due to wide starting ends of the conveyance. Means for Solving the Problems The structure of the present invention for achieving the above object will be explained using FIGS. 1 to 4 corresponding to embodiments. The present invention is a means used in the seedling feeding conveyor 30 of the seedling feeding section 20 of the conventionally known transplanting machine, as set forth in requirements a to f of the claims for utility model registration. At least two of the conveyor belts 31 of the seedling supply conveyor 30 convey the seedlings in directions away from each other, and the conveyance start ends 32 of each conveyor belt 31 are adjacent to each other, and at least the conveyor belts 31 whose conveyance start ends 32 are adjacent to each other One means is to make the conveyor belt 31 longer than possible so that the interval between the adjacent conveyance start ends 32 is the same as the set interval even at the maximum furrow length L1 in the range of the furrow length L that can be changed. At least in the narrow furrow L which is less than the maximum furrow L1 of the changeable furrow L, the conveyor belt 31 is A means of shortening the conveying surface. When the seedling supply unit 20 moves laterally due to a change in the furrow L, the conveyor belt 31 is moved by moving the conveyor start ends 32 so that the interval between the adjacent conveyor start edges 32 becomes the same as the set interval. Means allowing the length of the conveying surface to be changed. The above-mentioned means are intended to solve the problem. Function Next, the function of the present invention will be explained. When narrowing the furrow L, conveyor belt 3
The conveyance start end 32 of No. 1 is moved in the direction in which the conveyance surface becomes shorter by the length of the ridge L that narrows it. At that time, the excess conveyor belt 31 is removed from the bent portion 3 on the return side.
All you have to do is make 4 bigger and store it. After that, the seedling supply section and the seedling planting section are moved together so that the furrow distance L is set. As described above, even if the furrow L is narrowed, the set interval between the conveyance start ends 32 can be maintained, and there is an effect that the conveyance start ends 32 do not collide with each other. Moreover, when widening the furrow L, the seedling supply section and the seedling planting section are first moved together so that the furrow L is set. Thereafter, the conveyor belt 31 is moved in the direction in which the conveyance surface becomes longer by the distance L that widens the conveyance start end 32 of the conveyor belt 31. The insufficient conveyance surface may be created by making the bent portion 34 on the return side smaller. As described above, even if the furrow L is widened, the set interval between the conveyance start ends 32 can be maintained, and there is an effect that the conveyance start ends 32 are not separated from each other and a space is not opened. Embodiment Hereinafter, an embodiment illustrated in FIGS. 1 to 4 will be described. This example shows a tractor-mounted two-row transplanter, but the present invention is of course not limited to this example, and can be applied to a tractor-mounted transplanter for three or more rows. It can also be applied to self-propelled transplanters with non-standard transportation means. A body frame 1 having a mounting part for being directly attached to a tractor (not shown) having a moving means is attached to the rear of the tractor. A seat 2 and a step 3 on which a seedling supply worker sits are provided above the front part of the body frame 1, with the longitudinal direction extending in the lateral direction of the machine body. A planting part traction shaft 4 for towing the planting part frame 5 is provided at the lower front of the body frame 1, with the longitudinal direction extending in the lateral direction of the traveling direction of the machine body. A long planting part frame 5 is attached to the planting part traction shaft 4 at the rear in the traveling direction of the machine body. The planting section frame 5 is made to rotate freely around the planting section traction shaft 4, and the rear of the planting section frame 5 is attached to the body so that the planting section frame 5 does not lower unnecessarily when the machine frame 1 is lifted. Stop at frame 1. In addition, the planting section frame 5 is fixed so that it can be moved when changing the furrow L in the longitudinal direction of the planting section traction shaft 4, that is, in the lateral direction of the moving direction of the machine body, so that it does not normally move. . Since this embodiment is for two ridges, two planting section frames 5 are provided symmetrically from the center of the body frame 1 in the advancing direction. A seedling planting part 10 for planting seedlings in the main field is provided below the central part of each planting part frame 5, and a seedling planting part 10 is provided above the central part of the planting part frame 5 to supply the seedlings to be planted in the seedling planting part 10 . A supply section 20 is provided. The seedling supply section 20 includes a pair of conveyor belts 3 as a seedling supply conveyor 30 whose seedling conveyance direction is in the lateral direction of the traveling direction of the machine body and whose conveyance surface is an approximately horizontal upper surface.
1 will be provided. The conveyor belt 31 is the seedling supply section frame 2
1, and the seedling supply section frame 21 is fixed to the planting section frame 5. The pair of conveyor belts 31 rotate in opposite directions to convey the seedlings away from each other, that is, the center of the machine frame 1 is the conveyance start end 32 and the outside of the machine frame 1 is the conveyance end 33. Make it. The conveyance start ends 32 of each conveyor belt 31 are placed next to each other, and the interval between the conveyance start ends 32 is set to be narrow enough to prevent the seedlings from falling unnecessarily. The front and back positions of each conveyor belt 31 match the conveyance side positions, making it look like one belt. The length of the conveyor belt 31 is set to be at least as long as possible to make the interval between the adjacent conveyance start ends 32 the same as the set interval even at the maximum furrow length L1 in the range of the changeable furrow length L. A starting end adjustment bracket 35 is provided at the conveyance starting end 32 of the conveyor belt 31. The starting end adjustment bracket 35 is movable laterally with respect to the seedling supply frame 21 and can be fixed. A roller is provided at the tip of the starting end adjustment bracket 35, and the conveyor belt 31 is hung on the roller. The movement range of the starting end adjustment bracket 35 is the maximum furrow distance L1
It is made possible to cope with changes in the length of the conveying surface from the range of the distance L2 to the minimum furrow distance L2. A bent bracket 36 fixed to the seedling supply frame 21 is provided below the conveyance surface of the conveyor belt 31, that is, on the return side. Bent bracket 36
A long hole is provided in the vertical direction, and a roller is provided that can move up and down through the long hole and can be fixed. A conveyor belt 31 is hung on the roller, and a bent part 34 is provided to meander and store the excess conveyor belt 31 when the conveying surface is shortened. The size of the bent portion 34 is set to be large enough to accommodate the change in length of the conveying surface from the maximum furrow length L1 to the minimum furrow length L2, which is the movement range of the starting end adjustment bracket 35. Next, a method of changing the furrow L according to the present invention will be explained. When narrowing the furrow L, conveyor belt 3
The conveyance start end 32 of No. 1 is moved in the direction in which the conveyance surface becomes shorter by the length of the furrow L that narrows it. At that time, the excess conveyor belt 31 is removed from the bent portion 3 on the return side.
Enlarge 4 and store it. After that, the planting section frame 5 to which the seedling supply section and the seedling planting section are integrally attached is moved so that the furrow distance L is set. In addition, when widening the furrow L, the planting section frame 5 to which the seedling supply section and the seedling planting section are integrally attached is first moved so that the set furrow L is achieved. Thereafter, the conveyor belt 31 is moved in the direction in which the conveyance surface becomes longer by the distance L that widens the conveyance start end 32 of the conveyor belt 31. The conveyance surface for the shortage is the bending part 3 on the return side.
4 is made smaller. The means for changing the length of the conveying surface of the conveyor belt 31 is not limited to the above means, and any known appropriate means may be used. Effects of the invention Since the present invention has the above-mentioned configuration, it can be used on the seedling supply conveyor of a transplanter that plants multiple rows of two or more rows at once. When supplying seedlings to both conveyor belts from in front of the transport start end of a pair of conveyor belts, there is a space in front of the operator that is not present on the conveyor belts, so the range of seedling supply does not widen from side to side, making it difficult to supply seedlings. This has the effect of making the work easier. (b) Even if the planting furrow is widened, even when two seedling supply workers feed seedlings to the conveyor belt from each side of a pair of conveyor belts, there is no space at the beginning of the conveyor belt. ,
The wider the furrows, the longer the conveyor belt becomes, which has the effect of allowing more time for seedling supply work. In addition, in this case, there is an advantage that there is no need to replace the expensive conveyor belt itself with a longer one. C. Seedlings grown in neatly arranged seedling containers are taken out one row at a time, and the multiple seedlings are fed onto a seedling supply conveyor that transports the seedlings in a direction away from each other, and the multiple seedlings are divided into two. Even with the method of supplying seedlings to two planting areas, the starting end of the seedling supply conveyor does not move away, which solves the problem of seedlings falling from the space when the furrow is widened, and makes it possible to change the furrow. It has the effect of being able to.

[Brief explanation of the drawing]

Fig. 1 is a front view of the transplanter according to the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a front view of main parts when the furrows are widened, and Fig. 4 is a main part when the furrows are narrowed. FIG. In the figure, 10 is a seedling planting section, 20 is a seedling supply section, 3
0 is the seedling supply conveyor, 31 is the conveyor belt, 3
2 is the conveyance start end, and L is the ridge.

Claims (1)

[Scope of Claim for Utility Model Registration] A seedling supply conveyor for a transplanter comprising the following requirements a to f. a) There shall be a multi-row seedling supply section and a seedling planting section. b. The furrow, which is the seedling planting interval in the lateral direction of the aircraft's traveling direction, can be changed by moving the multi-row seedling planting section in the lateral direction of the aircraft's traveling direction. c. Multiple rows of seedling supply units move together as the seedling planting unit moves laterally due to a change in furrow spacing. d The multiple-row seedling supply section shall have a conveyor belt as a seedling supply conveyor whose seedling conveyance direction is in the lateral direction of the traveling direction of the machine and whose conveyance surface is a substantially horizontal plane. e At least two of the conveyor belts of the multi-row seedling supply section transport the seedlings in a direction away from each other,
The starting ends of each conveyor belt should be adjacent to each other. f For at least one of the conveyor belts whose conveyance start ends are adjacent to each other, when the seedling supply section is moved laterally due to a change in the furrow, the interval between the adjacent conveyance start ends is the same as the interval before the movement. The length of the conveying surface can be changed.