transplant machine
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- ISEKI & CO LTD
- Filing Date
- 2022-12-23
- Publication Date
- 2026-07-31
AI Technical Summary
【0016】 本発明によれば、大型の苗に対して、植付装置の負荷を軽減し、併せて、作業者の負担軽減し、植付精度を向上できる。
Smart Images
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Abstract
Description
Technical Field
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[0001] The present invention relates to a transplanter that moves a planting tool up and down to plant seedlings in a field.
Background Art
[0002] Conventionally, a transplanter for planting seedlings includes a planting device for planting seedlings. Such a planting device is provided with a planting tool in the shape of a bird's beak that can move up and down. At the upper end (so-called top dead center) of its up-and-down trajectory, it receives a seedling for transplantation (hereinafter simply referred to as a seedling), and at the lower end (so-called bottom dead center), it penetrates into the furrow surface of the field and opens, and while leaving the seedling in this penetration hole and rising, it closes and repeats the operation of receiving the input of the seedling again, so as to be configured to continuously plant seedlings in the field. For example, Patent Document 1 discloses a transplanter in which an operator takes out a seedling from a seedling mounting table and inputs it into a planting device to plant the seedling in a field.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, as described in Patent Document 1, a transplanter of the type in which an operator takes out a seedling from a seedling mounting table and inputs it into a planting device can transplant large seedlings such as pineapples, but since the load is larger than that of normal seedlings, the planting device is loaded, and the planting device is likely to malfunction. In addition, the work burden on the operator for accurately inputting the seedling into the planting device is also large, and the planting depth and planting posture are likely to be disturbed.
[0005] Therefore, an object of the present invention is to provide a transplanter that can reduce the load on a planting device for large seedlings, and at the same time, reduce the burden on an operator and improve the planting accuracy. [Means for solving the problem]
[0006] To achieve the above objective, the first invention is: A planting device for planting seedlings in the field, The aforementioned planting Device A transplanting machine equipped with a lifting mechanism for raising and lowering a part, The planting device comprises, in order from above, a guide tube that receives seedlings and guides them downwards, a guide tube holding member formed in a substantially box shape to hold the guide tube, an opening / closing member attached to the guide tube holding member so as to be able to open and close, and a beak-shaped planting tool that opens and closes together with the opening / closing member and transplants the seedlings guided by the guide tube into the field. A load distribution plate, which is a plate-shaped member for distributing the load applied to the guide tube holding member when the lifting mechanism is driven, is provided at the connection between the lifting mechanism and the planting device. The load distribution plate includes a pin for the lifting mechanism, which is positioned on one side of the guide tube holding member to connect the lifting mechanism, and a pin positioned on the other side of the guide tube holding member. The guide tube holding member is attached to the load distribution plate pins so as to penetrate and engage with them, The present invention provides a transplanting machine characterized in that an opening / closing cable, which opens and closes the opening / closing member by pulling it in the upward and downward movement of the lifting mechanism, is routed from the lifting mechanism to the opening / closing member so as to pass inside the load distribution plate and to the side of the guide tube holding member.
[0007] According to the first invention described above, the overall strength of the planting device can be improved by distributing the load concentrated at the connection point with the lifting mechanism due to the lifting operation of the lifting mechanism. As a result, failure of the planting device can be effectively prevented. Furthermore, since the opening and closing cable is routed from the lifting mechanism to the opening and closing member so as to pass inside the load distribution plate and to the side of the guide tube holding member, it is possible to prevent the opening and closing cable 7 from getting caught on surrounding components or the hands of the worker when it becomes loose, thereby preventing failure.
[0008] The second invention is, in the first invention described above, Above the planting device, a seedling input assist cover is provided to guide the inserted seedlings into the planting device. The seedling input assist cover is a flat, plate-shaped member in a substantially horizontal position, and is attached to a cover mounting frame fixed to the machine body. The cover mounting frame is positioned on the left and right sides opposite to the side of the machine body where the lifting mechanism is provided, and an input opening for inputting seedlings into the guide tube is provided between the cover mounting frame and the lifting mechanism.
[0009] According to the second invention described above, in addition to the effects of the first invention, the operator can load multiple seedlings onto the seedling loading support cover, and then, as needed, take seedlings from the seedling loading support cover or slide the seedlings along a flat surface into the guide tube through the loading opening. This reduces the workload for large seedlings, which require considerable effort to load. Furthermore, the seedling loading support cover assists the operator in loading seedlings while guiding the loaded seedlings to adjust their position, thereby improving planting accuracy. Moreover, by positioning the cover mounting frame that secures the seedling loading support cover to the machine on the opposite side from the side where the lifting mechanism is located, the machine can be made more compact.
[0010] The third invention is, in the second invention described above, The aforementioned input opening is characterized by being formed in a polygonal shape and having dimensions such that the front-to-back width is greater than the left-to-right width.
[0011] According to the third invention described above, in addition to the effects of the second invention described above, it is possible to perform the planting operation without interference or hindering the back-and-forth swaying motion when the planting device moves along the lifting trajectory. In addition, the input area can be increased, and it is easier to move seedlings below the planting tool for a planting device that is slightly tilted at the top dead center. As a result, the planting accuracy is improved.
[0012] The fourth invention relates to any of the first to third inventions described above, The opening and closing member is mounted on the lower part of the guide tube holding member, and consists of a pair of front and rear left-side rotating plates that rotate integrally with the left-side rotating shaft, and a pair of front and rear right-side rotating plates that rotate integrally with the right-side rotating shaft, each of which is rotatably connected in a hinge-like manner by hinge pins, and the left-side rotating shaft and the right-side rotating shaft are rotatably supported by a pivot plate fixed to the guide tube holding member. The hinge pin is characterized in that it is inserted into and engaged with opening and closing adjustment holes having a predetermined width in the left-right direction, both at the front and rear, and is configured to slide left and right with some play in that direction.
[0013] According to the fourth invention described above, in addition to the effects of any of the first to third inventions, the opening and closing operation of the planting tool (range of left and right opening and closing width) can be adjusted. In addition, problems such as mechanical locking and hinge pin detachment are prevented. Furthermore, since it is possible to prevent the planting tool from opening too far beyond the left and right opening and closing width set by the left and right width of the opening and closing adjustment hole, the lifting mechanism is less likely to be overloaded.
[0014] The fifth invention is, in the fourth invention described above, The planting device is characterized in that an irrigation hose for watering is arranged inside the planting device so as to be inserted from above the guide tube holding member, and water is flowed into the inside of the planting tool from below the guide tube holding member.
[0015] According to the fifth invention described above, in addition to the effects of the fourth invention described above, the seedlings inside the planting tool become easier to slide, allowing for smoother planting. Furthermore, the posture and growth of the seedlings after planting are improved. [Effects of the Invention]
[0016] According to the present invention, the load on the planting device can be reduced when planting large seedlings, and at the same time, the burden on the operator can be reduced, and the planting accuracy can be improved. [Brief explanation of the drawing]
[0017] [Figure 1] Figure 1 is a left side view of a transplanting machine according to an embodiment of the present invention. [Figure 2] Figure 2 is a left side view of the vicinity of the planting device at top dead center. [Figure 3] Figure 3 is a left side view of the vicinity of the planting device. [Figure 4] Figure 4 is a rear view of the same. [Figure 5] Figure 5(a) is a perspective view of the guide cylinder holding member 43, Figure 5(b) is a left side view, and Figure 5(c) is a rear view. [Figure 6] Figure 6 is a perspective view of the main part of the opening and closing member. [Figure 7] Figure 7 is a rear view of the main part of the same. [Figure 8] Figure 8 is a plan view of the main part of the same. [Figure 9] Figure 9 is a left side view of the main part of the same. [Figure 10] Figure 10(a) is a perspective view of the load distribution plate, Figure 10(b) is a left side view of the same, and Figure 10(c) is a rear view of the same. [Figure 11] Figure 11 is a plan view of the main part of the vicinity of the planting device with the seedling input auxiliary cover attached. [Figure 12] Figure 12 is a plan view of the main part of the vicinity of the planting device with the seedling input auxiliary cover removed. [Figure 13] Figure 13 is a perspective view of the main part of the same. [Figure 14] Figure 14(a) is a perspective view of the cover mounting frame, and Figure 14(b) is a left side view. [Figure 15] Figure 15 is a left side view of the vicinity of the planting device with the contact cover attached. [Figure 16] Figure 16 is a rear view of the same. [Figure 17] Figure 17 is a right side view of the main part of the vicinity of the planting device according to a modified example.
Embodiments for Carrying Out the Invention
[0018] An embodiment specifically constructed based on the above technical concept will be described below with reference to the drawings. In the following description, the side where the engine E is located will be referred to as the front, and the opposite side where the control handle 2a is located will be referred to as the rear. Furthermore, when facing the front of the aircraft, the right hand side will be referred to as the right, and the left hand side as the left. In the following drawings, the front will be indicated by the arrow F as appropriate.
[0019] <Overall Structure> Figure 1 is a side view of a transplanting machine according to an embodiment of the present invention. This transplanting machine 1 has a basic configuration consisting of a vehicle body 2 that moves the machine forward and a planting unit 3 that plants seedlings in the field. A steering handle 2a is provided at the rear of the vehicle body 2 for operation. The planting unit 3 is equipped with a planting device 4 for planting seedlings and a seedling tray 5 for placing replenishment seedlings, and is configured to plant (transplant) seedlings that have been fed in by an operator into the field. The type of seedlings used is, for example, large seedlings such as pineapples.
[0020] In the illustrated example, the vehicle body 2 comprises an engine E, a pair of left and right rear wheels 2b that are driven and rotated by the power transmitted from the engine E, and a pair of left and right front wheels 2c that are supported to roll freely in front of the rear wheels 2b.
[0021] A transmission case 2d that receives power from engine E is located at the rear of engine E. Arm-shaped left and right transmission cases 2e, 2e are rotatably mounted on either side of the transmission case 2d to adjust the height of the aircraft and the left and right height. The rear wheels 2b, 2b are supported via these left and right transmission cases 2e, 2e.
[0022] Behind the transmission case 2d is a planting transmission case E2, which receives power from the engine E via the transmission case 2d and drives the planting device 4 in synchronization with the drive system mechanism.
[0023] <Configuration of the lifting mechanism U> Figure 2 is a left side view of the area around the planting device at the top dead center. The lifting mechanism U is a mechanism that raises and lowers the planting device 4, which will be described later, and performs the planting operation. The lifting mechanism U, as shown in the enlarged view of the main part of the blowing section in Figure 2, consists of a lifting arm 8 that raises and lowers the planting tool 44, and the planting tool 44 The system comprises a sub-link 9 that maintains the posture of the planting tool 44, an opening / closing interlocking arm 11 to which one end of an opening / closing cable 7 that opens and closes the planting tool 44 is connected, an opening / closing cam 12 that rotates the opening / closing interlocking arm 11, a rotary drive shaft 13 that moves the lifting arm 8 up and down while rotating the opening / closing cam 12, a swing plate 14 to which the lifting arm 8 and sub-link 9 are mounted and which is configured to swing back and forth, and a swing arm 15 that swingably supports the swing plate 14.
[0024] The lifting arm 8 is mounted so that its front end is pivotally supported on the swinging plate 14, and its rear end is attached to the planting device. 44 It is connected to the guide tube holding member 42. A rotary drive shaft 13 is located in the middle of it, and when the rotary drive shaft 13 moves up and down by a crank arm (not shown), the rear end of the lifting arm 8 also moves up and down, creating a mechanism to raise and lower the planting tool 44.
[0025] The sub-link 9 is positioned below the lifting arm 8, with its front end pivotally supported by the swing plate 14, and its rear end connected to the guide tube holding member 42 of the planting tool 44. As a result, the sub-link 9 moves up and down together with the lifting arm 8 to form a parallel link, and performs the function of maintaining a constant posture of the planting tool 44 during lifting and lowering.
[0026] The opening / closing interlocking arm 11 is configured to rotate within a predetermined range around a pivot point 11a. A cam contact roller 11b is connected to one end of the pivot point 11a, and one end of the opening / closing cable 7 is connected to the other end. The opening / closing interlocking arm 11 is biased counterclockwise in the plane of the paper by a spring member (not shown). When the opening / closing cam 12 contacts the cam contact roller 11b, it receives a pressing force from the opening / closing cam 12 and rotates clockwise in the plane of the paper. In response, the opening / closing cable 7 is pulled, and the planting tool 44 opens.
[0027] The opening / closing cam 12 has an eccentric shape and is mounted on the rotary drive shaft 13. It is configured to rotate clockwise in the direction of the paper by rotational drive on the rotary drive shaft 13. As a result, it contacts the cam contact roller 11b near the bottom dead center of the lifting trajectory L of the planting tool 44, causing the opening / closing interlocking arm 11 to rotate.
[0028] The rotary drive shaft 13 receives driving force from the planting transmission case E2 and is configured to rotate while moving up and down. This rotary drive shaft 13 is connected to the lifting arm 8 at an intermediate point.
[0029] The swinging plate 14 is pivotally supported at its rear by the swinging arm 15 and is configured to swing back and forth. As a result, it swings back and forth together with the lifting arm 8 and the sub-link 9 in conjunction with the vertical movement of the rotary drive shaft 13, creating a front-to-back bulge in the lifting trajectory L of the planting tool 44.
[0030] The oscillating arm 15 has its upper end pivotally supported by the planting transmission case E2, and its lower end is capable of swinging back and forth like a pendulum, with the rear of the oscillating plate 14 rotatably attached to it.
[0031] <Configuration of the planting device> Figure 3 is a left side view of the area around the planting device 4, and Figure 4 is a rear view. As shown in Figures 3 and 4, the planting device 4 comprises, in order from top to bottom, a guide tube 41 that receives seedlings and guides them downwards, a guide tube holding member 42 (also called a hopper holder) that holds the guide tube 41, an opening / closing member 43 that is attached to the guide tube holding member 42 so as to be able to open and close, and a beak-shaped planting tool 44 (also called a hopper) that opens and closes together with the opening / closing member 43 and transplants the seedlings guided by the guide tube 41 into the field.
[0032] The guide tube 44 is formed in the shape of an octagonal cylinder with open top and bottom (see Figure 12), and its width narrows from front to back and side to side as it goes downwards. This allows it to guide the inserted seedlings downwards while adjusting their posture.
[0033] Figure 5(a) is a perspective view of the guide tube holding member 42, Figure 5(b) is a left side view, and Figure 5(c) is a rear view. As shown in Figures 5(a) to 5(c), the guide tube holding member 42 has a roughly box shape and has upper and lower openings 42a on its top and bottom surfaces designed to fit with the guide tube 41. Multiple roughly rectangular side openings 42b are provided on the sides, making it easy for workers to insert their fingers or other objects for maintenance or to remove any attached debris. Furthermore, the left side is provided with upper and lower lifting mechanism pins 42c, 42c for penetrating and engaging with the lifting mechanism U to connect it. The rear end of the lifting arm 8 is rotatably attached to the upper lifting mechanism pin 42c, and the rear end of the sub-link 9 is rotatably attached to the lower lifting mechanism pin 42c. Furthermore, as shown in Figure 5(c), the lower edges of the front and back surfaces of the guide tube holding member 42 are formed in a wavy shape along the width direction, and the left pivot shaft 43a and the right pivot shaft 43c are arranged to abut against these wavy recesses, respectively. This configuration allows these shafts to rotate stably, enabling the planting device 4 to open and close stably.
[0034] Furthermore, on the back of the guide tube holding member 42, there are two load distribution plate pins 42d, 42d that penetrate and engage with the load distribution plate 45 (described later), and two support plate pins 42e, 42e that penetrate and engage with the support plate 46 that pivotally supports the opening / closing member 43, each located on the left and right sides. The vertical width of the guide tube holding member 42 is preferably about 130 millimeters. With this configuration, when planting seedlings about 40 centimeters tall, the planting tool 44 can reach the field even when the vehicle height is raised, allowing work to be done at a vehicle height that makes it less likely to knock over the first row of seedlings. In addition, the planting depth is less likely to be disturbed.
[0035] Figure 6 is a perspective view of the main part of the opening / closing member 43, Figure 7 is a rear view of the main part, Figure 8 is a top view of the main part, and Figure 9 is a left side view of the main part. The opening / closing member 43 is attached to the lower part of the guide tube holding member 42 via a pivot plate 46. More specifically, as shown in Figure 6, the opening / closing member 43 consists of a pair of front and rear left-side rotating plates 43b that rotate integrally with the left-side rotating shaft 43a, and a pair of front and rear right-side rotating plates 43d that rotate integrally with the right-side rotating shaft 43c, which are rotatably connected in a hinge-like manner by hinge pins 43e, 43e, respectively. Furthermore, the left-side rotating shaft 43a and the right-side rotating shaft 43c are rotatably supported on a pivot plate 46, which is fixed to the guide tube holding member 42 by pivot plate pins 42e, 42e.
[0036] The hinge pins 43e, 43e are penetrated and engaged with opening and closing adjustment holes 43f, 43f, each having a predetermined width in the left-right direction, respectively, allowing for left-right play and lateral sliding. As a result, the opening and closing operation (opening and closing range) of the planting tool 44 is adjusted. By penetrating and engaging the hinge pins 43e, 43e and sandwiching them with the box-shaped guide tube holding member 42 during installation, the left rotating plate 43b and the right rotating plate 43d are made slidable within the range of the opening and closing adjustment hole 43f, preventing mechanical lock-up and the hinge pins 43e from falling out. This prevents the planting tool 44 from opening too far beyond the left-right opening and closing range set by the left-right width of the opening and closing adjustment hole 37f, thus reducing the likelihood of overload on the lifting mechanism U.
[0037] The lower ends of the left rotating plate 43b and the right rotating plate 43d each have bolt fastening holes 43g for attaching and fixing the planting tool 44. Above the bolt fastening holes 43g, there are second bolt fastening holes 43h for fastening bolts to which spring members 47 are attached. The spring members 47 bias the left rotating plate 43b and the right rotating plate 43d in the closing direction. The bolt fastening holes 43g are positioned below the spring members 47 so as not to hinder the expansion and contraction of the spring members 47.
[0038] The opening / closing member 43 configured in this way is configured to open in the direction of arrow G1-G2 against the biasing force of the spring member 47 when the opening / closing cable 7, whose end is connected to the opening / closing cable end connector 43j located on the upper end of the left rotating plate 43b and the upper part of the right rotating plate 43d, is pulled in the direction of arrow G1 (see Figure 7). As a result, the planting devices 44 connected to the lower parts of the left rotating plate 43b and the right rotating plate 43d, respectively, open and close.
[0039] <Load distribution plate> Figure 10(a) is a perspective view of the load distribution plate 45, Figure 10(b) is a left side view thereof, and Figure 10(c) is a rear view thereof. The load distribution plate 45 is a plate-shaped member for distributing the load applied to the guide tube holding member 42 as the lifting mechanism U is driven. As shown in Figures 10(a) to 10(c), the load distribution plate 45 is formed in a roughly L-shape in plan view and is attached to the guide tube holding member 42 so as to cover the left side and rear of the guide tube holding member 42.
[0040] On the left side of the load distribution plate 45, side holes 45a, 45a are provided vertically for inserting and engaging the lifting mechanism pins 42c, 42c from the outside of the rear end of the lifting arm 8 and the rear end of the sub-link 9. On the back, side holes 45b, 45b are provided horizontally for inserting and engaging the load distribution plate pins 42d, 42d. With the load distribution plate 45 configured in this way, the load concentrated on the lifting mechanism pins 42c, 42c due to the lifting operation of the lifting mechanism U is distributed to the back of the guide tube holding member 42, thereby improving the overall strength of the planting device 4. As a result, failure of the planting device 4 can be effectively prevented.
[0041] Furthermore, the opening / closing cable 7 is routed from the lifting mechanism U to the opening / closing member 43, passing inside the load distribution plate 45 and to the side of the guide tube holding member 42. This prevents the opening / closing cable 7 from getting caught on surrounding components or the hands of workers when it becomes loose, thus preventing malfunctions.
[0042] <Seedling planting assistance F> Figure 11 is a plan view of the main parts around the planting device 4 with the seedling input assist cover 20 attached, Figure 12 is a plan view of the main parts around the planting device 4 with the seedling input assist cover 20 removed, and Figure 13 is a perspective view of the same main parts. As shown in Figure 11, the seedling input assist cover 20, which is mounted on the cover mounting frame 10, is positioned above the guide tube 41. This seedling input assist cover 20 guides the seedlings that the operator has placed from the seedling tray 5 into the planting device 4 to the guide tube 41, thereby assisting the operator in placing the seedlings. This reduces the workload for large seedlings, which require a lot of effort to place. Furthermore, while assisting the operator in placing the seedlings, the seedling input assist cover guides the placed seedlings and adjusts their position, thereby improving planting accuracy.
[0043] The seedling input support cover 20 is a flat, plate-like member in a nearly horizontal position, with a nearly octagonal input opening 20a provided in its approximate center. More specifically, the input opening 20a is located on the front side of the machine body of the seedling input support cover 20, and is positioned slightly to one side on the left or right. At top dead center, the guide tube 41 of the planting device 4 can enter the input opening 20a (i.e., the upper opening of the guide tube 41 is positioned to face the input opening 20a). Furthermore, the area from the center to the rear on the other side of the machine body is a flat surface with no particular features. This configuration allows multiple seedlings to be loaded onto the seedling input support cover 20, and the operator can supply them one by one from the input opening 20a to the guide tube 41. In other words, during operation, the worker can take seedlings from the seedling input support cover 20 as needed, or slide the seedlings along a flat surface into the guide tube through the input opening 20a, thereby significantly reducing the workload for large seedlings, which require considerable effort to input. Furthermore, the input opening 20a is provided with a front-to-back width greater than its left-to-right width (more specifically, two of the eight sides are larger than the two front-to-back sides), which prevents interference and does not hinder the back-and-forth swaying motion of the planting device 4 as it moves along the lifting trajectory L, allowing the planting operation to be performed. In addition, the input area can be enlarged, making it easier to move seedlings below the planting tool 44 relative to the planting device 4, which is slightly tilted at the top dead center. While a roughly octagonal shape is preferable for the input opening 20a in order to maintain the correct posture when seedlings are dropped and supplied, other polygonal shapes, such as a square, can also be adopted.
[0044] As shown in Figures 12 and 13, below the seedling insertion support cover 20, there is a cover mounting frame 10 that can be attached by inserting and engaging pins, which are erected at appropriate positions, into the seedling insertion support cover 20.
[0045] Figure 14(a) is a perspective view of the cover mounting frame 10, and Figure 14(b) is a left side view thereof. As shown in Figures 14(a) to 14(b), the cover mounting frame 10 comprises a mounting base 10a that is attached and fixed to the planting transmission case E2, a front and rear frame section 10b extending in the front-rear direction from the mounting base 10a, and left and right frame sections 10c extending in the left-right direction from the ends of the front and rear frame sections 10b. The front and rear frame section 10b is located on the right side of the planting device 4, and the left and right frame sections 10c are located at the rear, so as to prevent the planting device 4 from coming into contact with the operator's hands or external obstacles.
[0046] Furthermore, the cover mounting frame 10 has mounting plates 10e suspended from the front and rear frame sections 10b and extended mounting sections 10d extending from the left and right frame sections 10c in order to attach the contact prevention cover 21 that covers the left and right sides and rear of the planting device 4.
[0047] Figure 15 is a left side view of the area around the planting device 4 with the contact prevention cover 21 attached, and Figure 16 is a rear view of the same. As shown in Figures 15 and 16, the contact prevention cover 21 is formed in a roughly U-shape in plan view and is attached to the cover mounting frame 10, and is arranged to surround the left and right sides and rear of the planting device 4. This serves to prevent the planting device 4 from coming into contact with external obstacles. The cover mounting frame 10 is provided on the side opposite to the side of the machine where the lifting mechanism U is provided, that is, the cover mounting frame 10 is positioned on the left and right sides opposite to the side where the lifting mechanism U is provided, and an input opening 20a for loading seedlings into the guide tube 41 is provided between the left and right sides of the cover mounting frame 10 and the lifting mechanism U, thereby making the machine more compact. Furthermore, a roughly V-shaped guard stay 20b is provided on the inner circumferential surface of the contact prevention cover 21. This guard stay 20b supports the seedling input support cover 20 while also preventing the planting device 4 from coming into contact with the outside.
[0048] <Variation> The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the invention as described in the claims, and it goes without saying that these modifications are also included within the scope of the present invention. Figure 17 is a right side view of the main parts around the planting device 4 according to a modified example. As shown in Figure 17, the planting device 4 is arranged inside the planting device 4 by inserting the irrigation hose 22 for irrigation from above the guide tube holding member 42. Furthermore, an inner guide plate 22a made of an elastic material such as rubber may be placed inside the guide tube holding member 42 to allow water to flow into the planting tool 44 from below the guide tube holding member 42. This makes it easier for the seedlings inside the planting tool 44 to slide, allowing for smooth planting. In addition, it improves the posture and growth of the seedlings after planting. An irrigation pump and a water storage container (not shown) are provided at an appropriate location on the transplanting machine 1 to supply water to the irrigation hose 22. The irrigation pump is configured to receive driving force from the planting transmission case E2 and to supply water from the water storage container to the irrigation hose 22.
[0049] Although the upper surface of the seedling input support cover 20 described above is flat, it may also be configured to have a downward curved section towards the input opening 20a, allowing the seedlings to be moved gradually automatically by vibrations of the machine. In this configuration, the slope near the input opening 20a is made as small as possible to prevent the seedlings from entering the input opening 20a on their own, and the seedlings accumulate in front of the input opening 20a. This makes it easier for workers to pick up seedlings and enables timely seedling supply. [Explanation of Symbols]
[0050] 1 transplanter 2. Running vehicle 2a Control handle 2b rear wheel 2c Front Wheel 2D Mission Case 2e transmission case 3 Planting area 4 Planting equipment 5 Seedling stand 7. Opening / closing cable 7a Cable Outer 7b Cable Inner 6 Lifting Arm 9. Secondary links 10 Cover mounting frame 11. Opening and closing interlocking arm 11a Rotating fulcrum 11b Cam contact roller 11c Closing bolt 12 Opening / Closing Cam 13 Rotary drive shaft 14. Oscillating plate 15. Swivel Arm 20 Seedling insertion support cover 21 Contact prevention cover 22 Irrigation hoses 41 Guide tube 42 Guide tube holding member 43 Opening / closing member 44 Planting tools 45 Load distribution plate E-engine E2 Planting Transmission Case U-shaped lifting mechanism
Claims
1. A planting device for planting seedlings in the field, A transplanting machine comprising a lifting mechanism for raising and lowering the aforementioned planting device, The planting device comprises, in order from above, a guide tube that receives seedlings and guides them downwards, a guide tube holding member formed in a substantially box shape to hold the guide tube, an opening / closing member attached to the guide tube holding member so as to be able to open and close, and a beak-shaped planting tool that opens and closes together with the opening / closing member and transplants the seedlings guided by the guide tube into the field. A load distribution plate, which is a plate-shaped member for distributing the load applied to the guide tube holding member when the lifting mechanism is driven, is provided at the connection between the lifting mechanism and the planting device. The load distribution plate includes a pin for the lifting mechanism, which is positioned on one side of the guide tube holding member to connect the lifting mechanism, and a pin positioned on the other side of the guide tube holding member. The guide tube holding member is attached to the load distribution plate pins so as to penetrate and engage with them, A transplanting machine characterized in that an opening / closing cable, which opens and closes the opening / closing member by pulling it in the upward and downward movement of the lifting mechanism, is routed from the lifting mechanism to the opening / closing member so as to pass inside the load distribution plate and to the side of the guide tube holding member.
2. Above the planting device, a seedling input assist cover is provided to guide the inserted seedlings into the planting device. The seedling input assist cover is a flat, plate-shaped member in a substantially horizontal position, and is attached to a cover mounting frame fixed to the machine body, the cover mounting frame is positioned on the left and right sides opposite to the side of the machine body where the lifting mechanism is provided, and an input opening for inputting seedlings into the guide tube is provided between the left and right sides of the cover mounting frame and the lifting mechanism, characterized in that the transplanting machine is as described in claim 1.
3. The transplanting machine according to claim 2, characterized in that the input opening is formed in a polygonal shape and is provided with dimensions such that the front-to-back width is greater than the left-to-right width.
4. The opening and closing member is mounted on the lower part of the guide tube holding member, and consists of a pair of front and rear left-side rotating plates that rotate integrally with the left-side rotating shaft, and a pair of front and rear right-side rotating plates that rotate integrally with the right-side rotating shaft, each of which is rotatably connected in a hinge-like manner by hinge pins, and the left-side rotating shaft and the right-side rotating shaft are rotatably supported by a pivot plate fixed to the guide tube holding member. The transplanting machine according to any one of claims 1 to 3, characterized in that the hinge pin is penetrated and engaged with opening and closing adjustment holes having a predetermined width in the left-right direction, both in the front and rear, and is configured to slide left and right with some play in the left-right direction.
5. The transplanting machine according to claim 4, characterized in that the planting device is arranged inside the planting device such that an irrigation hose for irrigation is inserted from above the guide tube holding member, and water is flowed into the inside of the planting tool from below the guide tube holding member.