CN116437800A - Transplanting machine - Google Patents

Abstract

The present invention provides a transplanting machine (3), which comprises: a planting device (39) for planting the seedling (N) in the field; a seedling supply device (38) for supplying seedlings to the planting device; and a seedling stage (190) for placing the seedling Miao Tuopan (189), wherein the seedling tray (189) accommodates the seedlings supplied to the seedling supplying device. Miao Tuopan A plurality of accommodating recesses (189 a) capable of accommodating seedlings individually are formed in a vertically and horizontally aligned manner on the upper surface, and a groove (189 b) formed between adjacent accommodating recesses and extending in the aligned direction is formed on the lower surface. The seedling stage has: a placement unit (190 a) for placing the seedling tray; and a guide part (190 b) for guiding the movement of the seedling tray on the carrying part. The guide portion protrudes upward from the mounting portion, enters the groove portion when the seedling tray is mounted on the mounting portion, and extends along the groove portion.

Description

Transplanting machine

Technical Field

The present invention relates to a transplanting machine for planting seedlings into a field, for example.

Background

Conventionally, a transplanting machine disclosed in patent document 1 is known.

The transplanting machine disclosed in patent document 1 is mounted on the rear part of a rotary cultivator coupled to a tractor. The transplanting machine comprises: a seedling supply device having a plurality of supply cups for accommodating seedlings; and a planting device that plants the seedling supplied from the seedling supply device into the field. A seedling carrying table is arranged above the seedling supply device. The seedlings of the seedling tray are supplied to the seedling supply device by placing Miao Tuopan on the seedling stage, and the seedlings are transplanted into the field by the planting device.

In the transplanting operation, the transporting seedling carrying vehicle loaded with the seedling tray is carried beside the transplanting machine, and if the seedling of the seedling carrying table is not found, the tractor is temporarily stopped, and Miao Tuopan of the transporting seedling carrying vehicle is transferred to the seedling carrying table of the transplanting machine.

In addition, the supply cup is provided with a bottom cover which can be opened and closed freely, and seedlings in the supply cup fall into the planting device by opening the bottom cover.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open publication No. 2019-208412 "

Disclosure of Invention

Problems to be solved by the invention

In the transplanting machine described in patent document 1, since the tractor must be stopped in order to place Miao Tuopan on the seedling stage, the transplanting operation is stopped, the work efficiency is lowered, and the rapid supply of seedling trays is not possible.

In the transplanting machine described in patent document 1, the bottom cover of the supply cup may swing in an opened state, and thus the seedling may come into contact with the bottom cover when the seedling falls, and the seedling may not fall stably.

In view of the above-described problems, an object of the present invention is to provide a transplanting machine capable of rapidly supplying seedling trays to a seedling stage without stopping a transplanting operation.

In view of the above-described problems, an object of the present invention is to provide a transplanting machine capable of stabilizing the falling of seedlings by preventing the bottom cover from swinging in an opened state when the bottom cover of a supply cup for accommodating seedlings and supplying the seedlings to a planting device is opened.

Means for solving the problems

An transplanting machine according to one embodiment of the present invention includes: a planting device for planting the seedlings in the field; a seedling supply device for supplying seedlings to the planting device; and a seedling stage for placing a seedling tray that accommodates the seedlings supplied to the seedling supply device; the Miao Tuopan is provided with a plurality of accommodating recesses formed in a vertically and horizontally aligned manner on an upper surface thereof, and a groove formed between adjacent accommodating recesses and extending in the parallel direction, and the seedling stage has a mounting portion for mounting the seedling tray and a guide portion for guiding movement of the Miao Tuopan on the mounting portion, the guide portion being provided so as to protrude upward from the mounting portion, and the guide portion being provided so as to enter the groove and extend along the groove when the seedling tray is mounted on the mounting portion.

The guide portion extends in a width direction orthogonal to a front-rear direction of the transplanting machine, and guides movement of the seedling tray in the width direction on the mounting portion.

The guide portion extends from one end portion to the other end portion of the seedling stage in the width direction.

The seedling stage has a rectangular frame in plan view, and the guide portion connects two opposite sides of the frame.

The transplanting machine further includes a chair on which an operator who supplies the seedling to the seedling supply device can sit, the chair includes a front chair disposed in front of the seedling supply device and a rear chair disposed behind the seedling supply device, the seedling stage is disposed above the seedling supply device and between the front chair and the rear chair, and the guide portion extends in the width direction.

The seedling stage includes a plurality of seedling stages arranged in a vertical direction, and a step is provided at a position outside the seedling stage in the width direction and higher than the ground surface, and can be stepped on by an operator when the Miao Tuopan seedling stage is placed.

An transplanting machine according to one embodiment of the present invention includes: a planting device for planting the seedlings in the field; and a seedling supply device for supplying seedlings to the planting device; the seedling feeding device has a seedling feeding cup for receiving the seedling and dropping the seedling to the planting device, and the seedling feeding cup has: a cylindrical cup body having a seedling receiving opening at an upper portion and a seedling dropping opening at a lower portion; a bottom cover capable of closing or opening the drop port; a hinge part for connecting the bottom cover to the cup main body in an openable and closable manner; a biasing member for biasing the bottom cover in a direction to open the drop port; and a limiting part for limiting the position of the bottom cover when opening.

The restricting portion includes: a bulge part formed on the outer peripheral surface of the cup main body; and an abutting portion formed on the bottom cover and abutting against the bulge portion when the bottom cover is opened.

The biasing member is disposed outside the drop port.

The hinge portion is disposed outside the drop port.

Further, a shaft supporting portion for supporting the hinge shaft of the hinge portion and a reinforcing rib for reinforcing the shaft supporting portion are provided to protrude from an outer circumferential surface of the cup main body, and the reinforcing rib includes a 1 st reinforcing rib provided on one end side of the hinge shaft and a 2 nd reinforcing rib provided on the other end side of the hinge shaft.

The seedling supply device further includes: a conveying mechanism for conveying the seedling supply cups along a conveying path which is annular in plan view; an inner member disposed along the conveying path and inside the conveying path; and an outer member disposed along the transport path outside the transport path; the seedling supply cup has a guide portion for guiding the conveyance of the seedling supply cup along the conveyance path, and the guide portion includes an inner guide portion that abuts the inner member and an outer guide portion that abuts the outer member.

The inner guide portion has a 1 st portion that abuts against a lower surface of the inner member and a 2 nd portion that abuts against a surface of the inner member on the conveyance path side.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the above configuration, since the seedling tray can be slid along the guide portion, the seedling tray can be rapidly supplied to the seedling stage without stopping the transplanting operation.

In addition, according to the above-described structure, since the open position of the bottom cover is determined by the urging member and the restricting portion, it is possible to prevent the seedling from touching the bottom cover when the seedling falls, and the falling of the seedling is stabilized.

Drawings

Fig. 1 is a side view of a work machine.

Fig. 2 is a side view of the earth working apparatus.

Fig. 3 is a plan view of the earth working apparatus.

Fig. 4 is a block diagram showing a power transmission system of the work machine.

Fig. 5 is a side view showing a planting device or the like of the transplanting machine.

Fig. 6 is a top view of the planting device.

Fig. 7 is a perspective view of the seedling stage.

Fig. 8 is a perspective view of an example of the seedling tray.

Fig. 9 is a top view of the right half of the seedling stage.

Fig. 10 is a cross-sectional view taken along line A-A of fig. 9.

Fig. 11 is a top view of the seedling stage.

Fig. 12 is a plan view of the seedling feeding device.

Fig. 13 is a view illustrating a bottom cover and an open position of the seedling feeding device.

Fig. 14 is a perspective view of a part of the seedling feeding device as seen from below.

Fig. 15 is an exploded perspective view of the seedling feeding cup.

Fig. 16 is a perspective view of the seedling feeding cup, showing a state in which the bottom cover is closed and a state in which it is opened.

Fig. 17 is a bottom view of the seedling feeding cup.

Fig. 18 is a sectional view of the seedling feeding cup.

Fig. 19 is a view showing a positional relationship between the seedling feeding cup and the planting tool.

Detailed Description

An embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 shows a working machine 1 capable of carrying out seedling planting (transplanting) along with a ground work (cultivation or the like) while traveling. Work implement 1 includes a traveling body 1A and a ground working device 1B attached to the rear of traveling body 1A. The ground working device 1B includes a 1 st ground working machine 2 that is liftably mounted on the rear portion of the traveling body 1A, and a 2 nd ground working machine 3 that is liftably mounted on the rear portion of the 1 st ground working machine 2.

In the present embodiment, a tractor which is a traveling vehicle is illustrated as the traveling body 1A. Further, a rotary tiller is exemplified as the 1 st ground working machine 2. Further, as the 2 nd ground working machine 3, a transplanting machine for transplanting seedlings in a field is exemplified. Hereinafter, the traveling body is referred to as a tractor 1A, the 1 st ground working machine is referred to as a rotary cultivator 2, and the 2 nd ground working machine is referred to as a transplanting machine 3.

The traveling body 1A is not limited to a tractor, and may be another traveling vehicle. The 1 st ground working machine 2 is not limited to a rotary tiller, and may be any machine that works on a field. Although the rotary tiller 2 is exemplified as a center-drive rotary tiller, a side-drive rotary tiller may be used.

Fig. 1 is a side view showing a work machine 1. In the present embodiment, unless otherwise specified, the explanation will be made with the front side (left side in fig. 1) of the driver sitting on the driver seat 5 of the tractor 1A as the front, the rear side (right side in fig. 1) of the driver as the rear, the left side (near side in fig. 1) of the driver as the left, and the right side (inside in fig. 1) of the driver as the right. A horizontal direction K2 (see fig. 3), which is a direction orthogonal to the front-rear direction K1 (see fig. 1) of the tractor 1A, will be described as a machine-width direction K2.

The direction from the center portion of the tractor 1A in the machine width direction toward the right or the left will be described as the machine width direction outward. In other words, the outboard direction is a direction away from the center of the tractor 1A in the machine width direction K2. The direction from the right part or the left part of the tractor 1A toward the center part will be described as the inside of the machine width. That is, the machine width inner direction means a direction opposite to the machine width direction outer direction. In other words, the machine width direction inside is a direction approaching the machine width direction center portion of the tractor 1A in the machine width direction K2.

As shown in fig. 1, the tractor 1A has a vehicle body 6 and a traveling device 7, and the traveling device 7 includes a front wheel 7F mounted on a front portion of the vehicle body 6 and a rear wheel 7R mounted on a rear portion of the vehicle body 6. The vehicle body 6 includes a prime mover (drive source) E1 and a power transmission case T1 connected to a rear portion of the prime mover E1. The prime mover E1 drives the traveling device 7.

The prime mover E1 is, for example, a diesel engine. The prime mover E1 may be a gasoline engine, an LPG engine, or an electric motor, or may be a hybrid type engine including an engine and an electric motor.

The power transmission case T1 is configured by directly connecting a clutch housing having a clutch incorporated therein, a transmission case having a transmission incorporated therein, a differential case having a differential incorporated therein, and the like.

A driver seat 5 is mounted on the rear portion of the vehicle body 6, and a power take-off shaft (PTO shaft) 22 for taking out the power of the prime mover E1 is provided in a protruding manner rearward. That is, the traveling body 1A has a power take-off shaft 22 that takes off the power of the prime mover E1. A steering wheel 8 is provided in front of the driver's seat 5. The tractor 1A further includes a battery (not shown) mounted on the front portion.

As shown in fig. 1, the rotary tiller 2 is attached to the rear portion of the tractor 1A via an attachment mechanism such as a three-point link mechanism 9 so as to be able to be lifted. The three-point link mechanism 9 has an upper link 9A and a lower link 9B, and is mounted on the rear portion of the vehicle body 6. A vertically swingable lifting link 10A is provided at the rear of the vehicle body 6, and the lifting link 10A is connected to a lower link 9B via a lifting lever 10B. The lift link 10A is driven to lift by a hydraulic device 10C provided at the upper rear part of the vehicle body 6, and the lower link 9B is moved up and down by the lift link 10A. Thereby, the rotary cultivator 2 is lifted and lowered.

The rotary tiller 2 has a transmission case 12 that receives power of a PTO shaft 22 of the tractor 1A via a universal joint (not shown). The transmission case 12 is located at the center of the rotary cultivator 2 in the width direction (the same direction as the machine width direction K2).

Fig. 2 and 3 are detailed views of the ground working apparatus 1B.

The rotary cultivator 2 has a rotary frame 11, and the transplanting machine 3 has a transplanting machine frame 37, and the rotary frame 11 and the transplanting machine frame 37 are connected to each other so as to be movable up and down by a connecting mechanism 41 constituted by a parallel link mechanism.

In the rotary tiller 2, the transmission case 12 is provided at a center portion in the machine width direction K2 of the rotary frame 11. A rotary shaft 16 is provided protruding from a lower portion of the transmission case 12 to one side and the other side in the machine width direction K2, and the rotary shaft 16 has an axial center in the machine width direction K2. A plurality of plow blades (not shown) are fixed to the outer periphery of the rotary shaft 16 via brackets. The rotation shaft 16 rotates around the axis, and the claw plows (cultivates) the field, and the plowed soil is disposed of in the rear cover 19B rearward. These rotary shafts 16 and the plow blades constitute a tillage section 18 for tillage of the seed field.

Soil collecting trays 56L and 56R are disposed in front of the rotary cultivator 2. The soil collecting trays 56L and 56R are members for bringing soil toward the cultivation portion 18 toward the inside of the machine width. The soil collecting tray 56L is disposed on one side (left side) in the machine width direction and is positioned in front of the rotary tiller 2. The soil collecting tray 56R is disposed on the other side (right side) in the machine width direction and is positioned in front of the rotary tiller 2. The soil collecting trays 56L, 56R are obliquely arranged so as to be shifted from the front to the rear and from the outside to the inside of the machine width.

The rotary tiller 2 is provided with a ridge forming device a disposed behind the tilling portion 18. The ridge forming apparatus a is an apparatus for forming ridges in a field that has been cultivated by the cultivation part 18. In this embodiment, two ridges are formed, but the number of ridges formed is not limited to two.

The working machine 1 includes, as the ground working device 1B, a mulch film laying device 300 for laying mulch film (mulch film) on ridges formed on a field. The mulch laying device 300 is mounted on the rotary cultivator 2. The mulching film laying device 300 is disposed at the rear of the rotary cultivator 2 and at the front of the transplanting machine 3.

The mulch film laying device 300 includes: the mulching film covering device comprises a supporting shaft 301 for supporting a mulching film roll, a film pressing roller 331 for pressing the end of the laid mulching film, and a soil covering member 321, wherein the soil covering member 321 covers soil on the end of the mulching film bent by the film pressing roller 331.

As shown in fig. 2, the transplanting machine 3 constituting the earth working apparatus 1B has a transplanting unit 36 provided in a transplanting machine frame 37. The transplanting unit 36 has a seedling feeding device 38, a planting device 39 provided below the seedling feeding device, and a covering device 40 provided behind the planting device 39. A seedling stage 190 is provided above the seedling supply device 38. The seedling stage 190 is provided on a stand 132 erected on the transplanter frame 37. The seedling stage 190 mounts the seedling tray 189 shown in fig. 8. The seedling tray 189 accommodates the seedling N shown in fig. 19.

As shown in fig. 3, the transplanting machine 3 has a plurality of transplanting units (transplanting unit 1 36A, transplanting unit 2 36B). The 1 st transplanting unit 36A is provided at one side (left side) of the transplanting machine 3 in the machine width direction K2. The 2 nd transplanting unit 36B is provided at the other side (right side) of the transplanting machine 3 in the machine width direction K2.

The 1 st graft unit 36A and the 2 nd graft unit 36B are connected by a connecting frame 130. The 1 st transplanting unit 36A and the 2 nd transplanting unit 36B are located above each of the plurality of ridges formed by the ridge forming device a.

The 1 st transplanting unit 36A has one frame (referred to as 1 st frame) 37A, one seedling feeding device (referred to as 1 st seedling feeding device) 38A, a plurality of planting devices (referred to as 1 st planting devices) 39A, and a number of covering devices (referred to as 1 st covering devices) 40A corresponding to the number of planting devices 39A. The 1 st seedling feeding device 38A, the 1 st planting device 39A, and the 1 st earthing device 40A are mounted on the 1 st frame 37A.

The 2 nd transplanting unit 36B has one frame (referred to as a 2 nd frame) 37B, one seedling feeding device (referred to as a 2 nd seedling feeding device) 38B, a plurality of planting devices (referred to as 2 nd planting devices) 39B, and a number of covering devices (referred to as 2 nd covering devices) 40B corresponding to the number of planting devices 39B. The 2 nd seedling feeding device 38B, the 2 nd planting device 39B, and the 2 nd earthing device 40B are mounted on the 2 nd frame 37B.

Hereinafter, the 1 st frame 37A and the 2 nd frame 37B are also collectively referred to as a transplanting machine frame 37. The 1 st seedling feeding device 38A and the 2 nd seedling feeding device 38B are also collectively referred to as a seedling feeding device 38. In addition, the 1 st planting device 39A and the 2 nd planting device 39B are collectively referred to as planting devices 39. The 1 st and 2 nd earthing devices 40A and 40B are also collectively referred to as earthing devices 40.

The seedling supply device 38 is a device for supplying seedlings N (see fig. 19) (soil seedlings and the like) to the planting device 39. The planting device 39 is a device for planting the seedling N supplied from the seedling supply device 38 into a field, and has a planting tool 64, and the planting tool 64 is lifted and lowered by the power of the prime mover E1, and is pushed into the field to plant the seedling N. The soil covering device 40 is a device for collecting and covering soil on the root portion of the planted seedling N and compacting the root portion of the seedling N.

As shown in fig. 3 and 4, the seedling supply device 38 includes a plurality of seedling supply cups 171 and 172 into which seedlings are put. The plurality of seedling feeding cups includes a plurality of 1 st feeding cups 171 and a plurality of 2 nd feeding cups 172. In the present embodiment, the number of 1 st supply cup 171 and the number of 2 nd supply cup 172 are 11, and the total number of supply cups is 22. The 1 st supply cup 171 and the 2 nd supply cup 172 are alternately arranged along an annular conveying path R1 extending in the front-rear direction K1.

As shown in fig. 4, the plurality of 1 st planting devices 39A includes a 1 st planting device 39AL on the left side and a 1 st planting device 39AR on the right side. The 1 st plurality of soil covering devices 40A includes a 1 st soil covering device 40AL on the left side corresponding to the 1 st planting device 39AL and a 1 st soil covering device 40AR corresponding to the 1 st planting device 39AR. In addition, the plurality of 2 nd planting devices 39B includes a left 2 nd planting device 39BL and a right 2 nd planting device 39BR. The plurality of 2 nd casing devices 40B includes a 2 nd casing device 40BL corresponding to the 2 nd planting device 39BL on the left side and a 2 nd casing device 40BR corresponding to the 2 nd planting device 39BR.

The 1 st planting device 39A plants two rows of seedlings on one ridge, and the 2 nd planting device 39B plants two rows of seedlings on one ridge.

In addition, the number of the transplanting units may be three or more. In addition, the number of the transplanting units is preferably plural, but one transplanting unit may be provided. That is, the transplanting machine 3 may have at least one transplanting unit. Therefore, the transplanting machine 3 may have at least one seedling feeding device. In addition, the planting device is only required to be provided with at least one transplanting unit. That is, the transplanting machine 3 may be provided with at least one planting device (planting tool).

As shown in fig. 2, the transplanting machine 3 is provided with a chair 187 for a worker who works on the transplanting unit 36. The chair 187 is disposed in front of and behind the graft unit 36. That is, the chairs 187 include front chairs 187A, 187B and rear chairs 187C, 187D.

As shown in fig. 3, front chairs 187A, 187B are provided on the transplanter frame 37. The front chairs 187A and 187B are disposed between the rotary tiller 2 and the transplanting machine 3.

As shown in fig. 2, the rear chairs 187C, 187D are supported by a rear chair mount 199. The rear chair attachment 199 is provided on the rotating frame 11 so as to be movable up and down via the frame coupling mechanism 200. The frame connecting mechanism 200 is constituted by a parallel link mechanism, and the rear chairs 187C, 187D are lifted and lowered in parallel with respect to the floor.

The rear chair attachment 199 moves up and down with respect to the rotary cultivator 2 and the transplanting machine 3 by being brought into contact with the field by the wheels 206 and following the irregularities of the field.

As shown in fig. 3, a seedling supply stand 188A is provided behind the 1 st front chair 187A. A seedling supply stand 188B is provided behind the 2 nd front chair 187B. A seedling supply table 188C is provided in front of the 1 st rear chair 187C. A seedling supply stand 188D is provided in front of the 2 nd rear chair 187D. The seedling feeding stage 188A is located on the front side of the operator sitting on the 1 st front chair 187A. The seedling feeding stage 188B is located on the front side of the operator sitting on the 2 nd front chair 187B. The seedling supply stand 188C is located on the front side of the operator sitting on the 1 st rear chair 187C. The seedling feeding stage 188D is located on the front side of the operator sitting on the 2 nd rear chair 187D.

Seedling trays 189 (see fig. 8) having a plurality of seedlings N (see fig. 19) can be placed on the seedling supply tables 188A to 188D. The operator can supply the seedlings N from the seedling trays 189 placed on the seedling supply tables 188A to 188D to the seedling supply cups 171, 172 of the seedling supply device 38.

As shown in fig. 3, the working machine 1 includes preliminary seedling stages 280L and 280R for placing a container (not shown) that accommodates a seedling tray 189. The preparations Miao Tai L, 280R are disposed above the rotary tiller 2. The preparation Miao Tai L is disposed above the left part of the rotary tiller 2 and in front of the 1 st front chair 187A. The preparation Miao Tai R is disposed above the right part of the rotary cultivator 2 and in front of the 2 nd front chair 187B.

Fig. 4 is a block diagram showing a power transmission system of the work machine 1. Fig. 5 and 6 are crossed for illustration.

In fig. 4, power from the prime mover E1 of the tractor 1A is received by the input shaft 21 of the transmission case 12 of the rotary tiller 2 via the PTO shaft 22 of the power transmission case T1.

A 1 st gear (bevel gear) G1 is provided at the rear of the input shaft 21. The 1 st gear G1 meshes with the 2 nd gear (bevel gear) G2. The 2 nd gear G2 is provided on the 1 st transmission shaft S1 having the axial center in the machine-width direction K2. The 1 st transmission shaft S1 is provided with a 3 rd gear (spur gear) G3. The 3 rd gear G3 meshes with a 4 th gear (spur gear) G4 located below the 3 rd gear G3. The 4 th gear G4 meshes with a 5 th gear (spur gear) G5 located below the 4 th gear G4. The 5 th gear G5 is provided on the rotation shaft 16.

Therefore, the power transmitted to the input shaft 21 is transmitted to the rotary shaft 16 via the 1 st to 5 th gears G1 to G5, and the rotary shaft 16 rotates, and the rotation of the plow claw protruding from the rotary shaft 16 drives the cultivation part 18 of the cultivation field.

The 1 st transmission shaft S1 extends from the substantially center in the width direction of the rotary cultivator 2 to one (left) of the outside in the machine width direction. A 1 st sprocket SP1 is provided at one end (left end) of the 1 st drive shaft S1 on the outer side of the machine width. A 2 nd transmission shaft S2 extending in the machine width direction is provided in front of the 1 st transmission shaft S1. The 2 nd sprocket SP2 is provided in the 2 nd transmission shaft S2. A chain 26 is mounted on the 1 st sprocket SP1 and the 2 nd sprocket SP2. Therefore, the power transmitted to the 1 st drive shaft S1 is transmitted to the 2 nd drive shaft S2.

A 6 th gear G6 is provided at one end (left end) of the 2 nd transmission shaft S2. The 6 th gear G6 rotates integrally with the 2 nd transmission shaft S2. The 6 th gear G6 is a pulse detection gear for measuring the rotational speed of the 2 nd transmission shaft S2. The rotational speed of the prime mover E1 can be calculated by measuring the rotational speed of the 2 nd transmission shaft S2.

A pulse sensor 25 is provided near the 6 th gear G6, and the pulse sensor 25 detects the irregularities of the 6 th gear G6 to output a pulse-like signal (generate a pulse). The pulse sensor 25 is a magnetoresistive rotary sensor, for example. The pulse sensor 25 is connected to a control device (not shown), and the generated pulse is input to the control device. The control device measures the rotational speed of the 2 nd drive shaft S2 based on the signal (signal processing) from the pulse sensor 25. The rotational speed of the motor E1 can be calculated by measuring the rotational speed of the 2 nd transmission shaft S2, and the movement amount of the working machine 1 can be calculated from the rotational speed of the motor E1. In addition, the position (upper limit position) of the planting tool 64 can also be detected. The control device is constituted by a microcomputer equipped with a CPU, an EEPROM, or the like. The control device is connected to, for example, a battery of the tractor 1A, and electric power is supplied from the battery.

An electromagnetic clutch 24 is provided on one end side (left end side) of the 2 nd transmission shaft S2. The electromagnetic clutch 24 can intermittently transmit the power transmitted to the 2 nd transmission shaft S2 to the 3 rd transmission shaft S3. The power transmitted to the 3 rd transmission shaft S3 is transmitted to the transplanting machine 3 shown in fig. 5 and 6 via the power transmission system shown in fig. 4, and the transplanting machine 3 is driven (specifically, a transplanting tool 64 and seedling supply devices 38A and 38B, which will be described later, provided in the transplanting machine 3 are driven).

The electromagnetic clutch 24 is connected to the control device described above and is controlled by the control device. The electromagnetic clutch 24 is connected according to a clutch connection signal from the control device after being disconnected according to a clutch disconnection signal from the control device. That is, the electromagnetic clutch 24 is turned off for a required amount of time in response to a command signal from the control device. In addition, the transplanting machine 3 may be continuously driven without cutting off the electromagnetic clutch 24 (without stopping the driving of the planting tool 64 and the seedling feeding devices 38A and 38B).

Next, a power transmission system from the 3 rd drive shaft S3 to the transplanting machine 3 will be described.

A worm 30 is provided on the 3 rd transmission shaft S3, and the worm 30 is engaged with a worm wheel 31. The worm wheel 31 is provided on the 4 th transmission shaft S4. The 4 th drive shaft S4 is coupled to the output shaft 32 via the brake 27. The power transmitted to the 3 rd drive shaft S3 is transmitted to the output shaft 32 via the worm 30, the worm wheel 31, the 4 th drive shaft S4, and the brake 27. Therefore, the power from the prime mover E1 is transmitted from the output shaft 32 to the transplanter 3 via the worm 30 or the like.

By transmitting the power from the prime mover E1 to the transplanting machine 3 via the worm 30, the occurrence of abrupt steering (stopping and reversing of the planting tool 64 immediately before the stop position (top dead center position)) of the planting tool 64 can be prevented by the self-locking function of the worm (the state in which the worm cannot be rotated from the worm wheel). In addition, the brake 27 can prevent the planting tool 64 from reversing (descending) by the inertia without completely moving to the top dead center even if the electromagnetic clutch 24 is turned off before the top dead center by the urging force of the spring.

The brake 27, the 6 th gear (pulse detection gear) G6, the pulse sensor 25, and the electromagnetic clutch 24 are provided on one end side (left end side) in the width direction (machine width direction K2) of the rotary cultivator 2. Therefore, the operator can easily access and adjust the brake 27, the 6 th gear (pulse detection gear) G6, the pulse sensor 25, and the electromagnetic clutch 24 from the side of the rotary tiller 2.

The output shaft 32 is constituted by a propeller shaft. The output shaft 32 extends rearward from the upper left part of the rotary cultivator 2. A power branching mechanism 35 constituted by a chain transmission mechanism or the like is provided in a forward intermediate portion of the output shaft 32. A part of the rotational power of the output shaft 32 is branched by the power branching mechanism 35, transmitted to the irrigation pump 50 via the gear mechanism 49, and drives the irrigation pump 50. The irrigation pump 50 is placed on the upper left of the rotary cultivator 2, and delivers water from a water tank mounted on the traveling body 1A or the like to an irrigation pipe (not shown) disposed in the vicinity of the planting tool.

A 7 th gear (bevel gear) G7 is provided at a rear end portion of the output shaft 32 that transmits power from the prime mover E1. The 7 th gear G7 meshes with the 8 th gear (bevel gear) G8. The 8 th gear G8 is provided at one end (left end) of the main shaft 107. Thereby, the power from the prime mover E1 is transmitted from the output shaft 32 to the main shaft 107.

The spindle 107 is provided with a 1 st torque limiter 108 and a 2 nd torque limiter 109. When an overload is applied to the 1 st graft unit 36A, the 1 st torque limiter 108 cuts off transmission of power (torque transmission) from the main shaft 107 to the 1 st graft unit 36A. When an overload is applied to the 2 nd graft unit 36B, the 2 nd torque limiter 109 cuts off transmission of power (torque transmission) from the main shaft 107 to the 2 nd graft unit 36B.

As shown in fig. 4, the power transmission mechanism includes 1 st to 12 th transmission mechanisms 115a to 115m.

The power transmitted to the main shaft 107 is transmitted to the 1 st shaft 111 via a 1 st transmission mechanism (chain flexible transmission mechanism) 115 a. In addition, the power transmitted to the main shaft 107 is transmitted to the 2 nd shaft 112 via a 2 nd transmission mechanism (chain flexible transmission mechanism) 115 b.

The power transmitted to the 1 st shaft 111 is transmitted to the 1 st seedling supply device 38A via a 3 rd transmission mechanism (bevel gear transmission mechanism) 115c and a 4 th transmission mechanism (chain flexible transmission mechanism) 115 d. The power transmitted to the 2 nd shaft 112 is transmitted to the 2 nd seedling feeding device 38B via a 5 th transmission mechanism (bevel gear transmission mechanism) 115e and a 6 th transmission mechanism (chain flexible transmission mechanism) 115 f.

The seedling feeding device 38 is provided with a 1 st rotary body 178 at the front and a 2 nd rotary body 179 at the rear rotatably about the longitudinal axis. The cable 180 is wound between the 1 st rotor 178 and the 2 nd rotor 179. The 1 st rotary body 178 and the 2 nd rotary body 179 are constituted by sprockets, and the cable body 180 is constituted by a chain.

The 1 st supply cup 171 and the 2 nd supply cup 172 are arranged along the cable body 180 on the outer peripheral side of the cable body 180.

The 1 st rotation body 178 rotates by transmitting power through the 3 rd transmission mechanism 115c and the 4 th transmission mechanism 115 d. Thereby, the cable 180, the 1 st supply cup 171, and the 2 nd supply cup 172 move in the arrow Y1 direction. The cable 180 forms a conveyance path R1 between the 1 st supply cup 171 and the 2 nd supply cup 172. As shown in fig. 4, the power is transmitted to the 1 st rotating body 178 of the 2 nd seedling supply device 38B via the 5 th transmission mechanism 115e and the 6 th transmission mechanism 115 f.

In addition, the power transmitted to the 1 st shaft 111 is transmitted to the 1 st planting device 39AR on the right side via the 7 th transmission mechanism (chain flexible transmission mechanism) 115g, and is transmitted to the 1 st planting device 39AL on the left side via the 8 th transmission mechanism 115h, the 3 rd shaft 113, and the 9 th transmission mechanism 115 i. The power transmitted to the 2 nd shaft 112 is transmitted to the 2 nd planting device 39BR on the right side via the 10 th transmission mechanism (chain flexible transmission mechanism) 115j, and transmitted to the 2 nd planting device 39BL on the left side via the 11 th transmission mechanism 115k, the 4 th shaft 114, and the 12 th transmission mechanism 115 m.

Next, the power transmission mechanism of the planting device 39 is described with reference to fig. 4, 5, and 6.

Since the 1 st planting device 39A and the 2 nd planting device 39B are configured in the same manner, the configuration of the 1 st planting device 39A shown in fig. 5 and 6 will be described, and the description of the configuration of the 2 nd planting device 39B will be omitted. The left 1 st planting device 39AL and the right 1 st planting device 39AR are configured in the same manner except that they are configured symmetrically left and right, and therefore, the description of common parts is omitted.

As shown in fig. 5 and 6, the 1 st planting device 39AL and the 1 st planting device 39AR are arranged in the machine width direction K2, and are arranged at different positions in the front-rear direction K1. The 1 st planting device 39AL is mounted on the 1 st planting frame 78L, and the 1 st planting device 39AR is mounted on the 2 nd planting frame 78R.

The 1 st planting device 39AL has a planting tool 64 and a planting lift mechanism 139. The 1 st planting device 39AR has a planting tool 64 and a planting lift mechanism 139 as the 1 st planting device 39 AL.

The planting tool 64 of the 1 st planting device 39AL is sometimes referred to as a planting tool 64AL, and the planting tool 64 of the 1 st planting device 39AR is sometimes referred to as a planting tool 64AR. In addition, the planting lift mechanism 139 of the 1 st planting device 39AL is sometimes referred to as a planting lift mechanism 139AL, and the planting lift mechanism 139 of the 1 st planting device 39AR is sometimes referred to as a planting lift mechanism 139AR.

The planting tool 64 is a member for planting seedlings in a field (ridge). The planting tool 64 has a beak shape with a front end facing downward (see fig. 5), and includes a front structure 140 and a rear structure 141. The planting tool 64 is opened and closed by the front structure 140 and the rear structure 141 being moved away from and closer to each other in the front-rear direction K1. The front structure 140 and the rear structure 141 are biased in the closing direction by tension springs.

As shown in fig. 5, the 7 th transmission mechanism 115g includes a drive sprocket 116R that rotates integrally with the 1 st shaft 111, a driven sprocket 117R supported by the 2 nd planting frame 78R via a support shaft 118R, and a chain 119R that is wound up so as to span the drive sprocket 116R and the driven sprocket 117R. The 7 th transmission mechanism 115g transmits power from the 1 st shaft 111 to the support shaft 118R, whereby the support shaft 118R rotates.

As shown in fig. 4, the 9 th transmission mechanism 115i includes a drive sprocket 116L that rotates integrally with the 3 rd shaft 113, a driven sprocket 117L supported by the 1 st planting frame 78L via a support shaft 118L, and a chain 119L that is wound up so as to span the drive sprocket 116L and the driven sprocket 117L. The 9 th transmission mechanism 115i transmits power from the 3 rd shaft 113 to the support shaft 118L, whereby the support shaft 118L rotates.

The 10 th transmission 115j is configured in the same manner as the 7 th transmission 115 g. Power is transmitted from the 2 nd shaft 112 to the support shaft 118R of the 2 nd planting device 39BR through the 10 th transmission mechanism 115j, and the support shaft 118R of the 2 nd planting device 39BR rotates.

The 12 th transmission mechanism 115m is configured in the same manner as the 9 th transmission mechanism 115 i. Power is transmitted from the support shaft 118L of the 2 nd planting device 39BL to the left side of the 4 th shaft 114 through the 12 th transmission mechanism 115m, and the support shaft 118L of the 2 nd planting device 39BL rotates.

As shown in fig. 5 and 6, the planting lift mechanism 139 is a device that supports the planting tool 64 and lifts the planting tool 64. In detail, the planting lift mechanism 139AL is a device that lifts the planting tool 64AL, and the planting lift mechanism 139AR is a device that lifts the planting tool 64 AR.

The planting lift 139 has a 1 st case 120, a 2 nd case 121, and a mounting member 122. The 1 st case 120 of the planting lift 139L is rotatably supported by the 1 st planting frame 78L via a support shaft 118L. The 1 st case 120 of the planting lift 139R is rotatably supported by the 2 nd planting frame 78R via a support shaft 118R. The 2 nd casing 121 is rotatably supported on the upstream end side of the 1 st casing 120. The mounting member 122 is supported by the 2 nd case 121. Planting tool 64 is supported on mounting member 122.

The 1 st case 120 and the 2 nd case 121 rotate with the rotation of the support shafts 118L, 118R. In the 1 st case 120 and the 2 nd case 121, a power transmission device is provided such that when the 1 st case 120 rotates in one direction about the axis in the horizontal direction, the 2 nd case 121 rotates in the opposite direction (the other direction about the axis in the horizontal direction) to the 1 st case 120 in association with the rotation of the 1 st case 120.

By rotating the 1 st case 120 and the 2 nd case 121, the mounting member 122 moves up and down in parallel while moving back and forth, and the planting tool 64 moves up and down (lifts) along a long elliptical trajectory in the up and down direction.

The seedling is supplied to the planting tool 64 in a falling position (top dead center position). At this time, the planting tool 64 is in a closed state, and the seedling is accommodated and held inside the planting tool 64. The planting tool 64 then holds the seedling and descends and the lower portion is flushed into the field. The planting tool 64 opens when it is pushed into the field, forms planting holes in the field, and drops and discharges seedlings downward in the opened state. Thereby, seedlings are planted in the field.

In the planting device 39 having the above-described configuration, if the support shafts 118L and 118R rotate one round, the planting tool 64 reciprocates up and down once.

The 1 st planting device 39AL and the 1 st planting device 39AR are arranged in the machine width direction K2 and are arranged at different positions in the front-rear direction K1. Thus, two rows of seedlings are planted in a staggered manner on the ridge by one transplanting unit (one of the seedlings adjacent to the other in the machine width direction K2 is planted with a position offset from the other in the front-rear direction).

In the present embodiment, the left and right planting tools 64 are lifted and lowered simultaneously. In addition, when the planting tool 64 is stopped, the left and right planting tools 64 are stopped at the top dead center position.

As shown in fig. 4, the transplanting machine 3 has a plurality of auxiliary devices 123. The plurality of auxiliary devices 123 includes a 1 st auxiliary device 123A provided to the 1 st transplantation unit 36A and a 2 nd auxiliary device 123B provided to the 2 nd transplantation unit 36B. The assist device 123 assists the lifting and lowering operation of the planting tool 64. The assist device 123 has an assist spring that biases the planting tool 64 in a direction to rise. By providing the assist device 123, even if the electromagnetic clutch 24 is cut off immediately before the top dead center, the planting tool 64 can be prevented from reversing by the inertia without completely moving to the top dead center.

As shown in fig. 2, 3, and 7 to 11, the transplanting machine 3 according to an embodiment of the present invention has a structure for enabling rapid supply of the seedling tray 189 to the seedling stage 190, and the structure will be described below.

The transplanting machine 3 includes a planting device 39 for planting seedlings in a field, a seedling supply device 38 for supplying seedlings to the planting device 39, and a seedling stage 190 for placing a seedling tray 189, and the seedling tray 189 accommodates seedlings N supplied to the seedling supply device 38 (see fig. 19). Miao Tuopan 189A includes a plurality of storage recesses 189a formed on the upper surface thereof in parallel and vertically, each of which can store a seedling N, and a groove 189b formed between adjacent storage recesses 189a and extending in the parallel direction on the lower surface thereof. The seedling stage 190 includes a placement portion 190a on which the seedling tray 189 is placed, and a guide portion 190b that guides the movement of the seedling tray 189 on the placement portion 190 a. The guide portion 190b is provided so as to protrude upward from the mounting portion 190a, and enters the groove 189b and extends along the groove 189b when the seedling tray 189 is mounted on the mounting portion 190 a.

The following is a detailed description.

As shown in fig. 2 and 3, the seedling stage 190 is disposed between the front chairs 187A and 187B and the rear chairs 187C and 187D. The seedling stage 190 is disposed above the 1 st transplanting unit 36A and the 2 nd transplanting unit 36B. The seedling stage 190 is disposed over the entire length of the transplanting machine 3 in the machine width direction K2.

Fig. 7 is a perspective view of the seedling stage 190. The seedling stage 190 is provided on a stage 132 (see fig. 2), the stage 132 is provided on a coupling frame 130 (see fig. 3), and the coupling frame 130 couples the 1 st transplanting unit 36A and the 2 nd transplanting unit 36B.

A pair of front and rear vertical frames 132a are erected on the upper portion of the stand 132, and horizontal frames 132b, 132b are erected on the upper ends and intermediate portions of the vertical frames 132 a. A seedling stage 190 is mounted across 3 layers above the stage 132 and above the cross frame 132b of each layer.

The seedling stage 190 has a square frame 190c in plan view. The frame 190c is composed of a front frame member, a rear frame member, a left frame member, and a right frame member. The front frame member and the rear frame member of the frame body 190c are fixed to the upper portion of the stand 132 or the cross frame 132b. A reinforcing frame 132c is fixed to the frame 190c. The reinforcing frame 132c is fixed to the left frame member and the right frame member of the frame 190c, respectively. The lower portion of the reinforcing frame 132c is fixed to the transplanter frame 37 (see fig. 2).

The lower part of the front frame member and the lower part of the rear frame member of the frame body 190c are connected by a plurality of front-rear connecting members 190 d. The front-rear connection member 190d is a rod-shaped member. The lower part of the left frame member and the lower part of the right frame member of the frame body 190c are connected at the central part in the front-rear direction by the left-right connecting member 190 e. The left and right connecting members 190e are flat plate-like members.

Fig. 8 is a perspective view of a seedling tray 189 placed on the seedling stage 190.

Miao Tuopan 189A plurality of accommodating recesses 189a capable of accommodating seedlings N (see FIG. 19) are formed in a vertically and horizontally aligned manner on the upper surface, and a groove 189b (see FIGS. 9 and 10) is formed on the lower surface, and the groove 189b is formed between adjacent accommodating recesses 189a and extends in the aligned direction (longitudinal direction and transverse direction). The seedling tray 189 shown in fig. 8 has 32 accommodating recesses 189a, but the number of accommodating recesses 189a is not particularly limited, and may be more than 32 or less than 32.

As shown in fig. 7 and 9 to 11, the seedling stage 190 includes a placement portion 190a on which the seedling tray 189 is placed, and a guide portion 190b that guides the movement of the seedling tray 189 on the placement portion 190 a.

The placement portion 190a is constituted by a front-rear connecting member 190d and a left-right connecting member 190 e.

The guide portion 190b is provided so as to protrude upward from the mounting portion 190a, and enters the groove 189b and extends along the groove 189b when the seedling tray 189 is mounted on the mounting portion 190 a.

The guide portion 190b extends along a width direction (machine width direction K2) orthogonal to the front-rear direction of the transplanting machine 3. The guide portion 190b guides the movement of the seedling tray 189 on the placement portion 190a in the width direction.

The guide portion 190b extends along the width direction (machine width direction K2) of the seedling stage 190. Specifically, the guide portion 190b extends from one end (left end) to the other end (right end) of the seedling stage 190 in the width direction (machine width direction K2).

The guide portion 190b connects two opposite sides (left and right frame members) of the frame 190 c. The guide portion 190b is formed of a plate-like member, and is disposed so that the thickness direction of the plate member faces in the front-rear direction. Thus, the width of the guide portion 190b in the front-rear direction is smaller than the height. The height of the upper edge of the guide portion 190b is set to be equal to or lower than the height of the upper edge of the housing 190 c.

As shown in fig. 11, the seedling stage 190 is formed to be longer in the machine width direction K2 than in the front-rear direction K1.

As shown in fig. 9 to 11, miao Tuopan 189 is placed on the seedling stage 190. As shown in fig. 11, miao Tuopan 189 is slidably mounted on the seedling stage 190 from the side (outside the machine body) of the seedling stage 190 to the arrow direction (inside the machine body).

The seedling stage 190 can place a plurality of (at least two) seedling trays 189. A plurality of seedling trays 189 are separately placed on the left and right portions of the seedling stage 190. In this embodiment, the seedling stage 190 is formed in a size that can place a total of 8 seedling trays 189. Specifically, the seedling stage 190 is formed to have a size such that 2 seedling trays 189 can be placed in a row in the front-rear direction and 4 seedling trays 189 can be placed in a row in the left-right direction (machine width direction). However, the size of the seedling stage 190 is not limited thereto. The seedling tray 189 may have a size in which less than 8 (for example, 4, 2, etc.) seedlings can be placed, or may have a size in which 9 or more seedlings (for example, 10, 12, etc.) seedlings can be placed.

In the present embodiment, the guide portions 190b are provided at two positions with a gap therebetween in the front-rear direction. The front guide portion 190b is provided on the front side of the left and right coupling members 190 e. The rear guide portion 190b is provided on the rear side of the left and right coupling members 190 e. The front-rear connecting member 190d connects the guide portion 190b to the left-right connecting member 190 e. The number of the guide portions 190b is not particularly limited, and may be 1, but is preferably plural (2 or more). By providing the plurality of guide portions 190b, the plurality of seedling trays 189 can be guided.

As shown in fig. 2 and 3, the transplanting machine 3 includes a chair 187 on which an operator who supplies seedlings to the seedling supply device 38 can sit. The chair 187 includes front chairs 187A, 187B disposed in front of the seedling feeding device 38 and rear chairs 187C, 187D disposed behind the seedling feeding device 38.

The seedling stage 190 is located above the seedling feeding device 38 between the front chairs 187A, 187B and the rear chairs 187C, 187D. The seedling stage 190 is configured such that the guide portion 190b extends in the machine width direction.

The seedling stage 190 includes a plurality of seedling stages 190 arranged in a vertical direction. As described above, in this embodiment, the seedling stage 190 includes 3 seedling stages 190.

As shown in fig. 2 and 3, a step S is provided on the outside in the width direction (the outside in the machine width direction) of the seedling stage 190 at a position higher than the ground surface, and the step S allows an operator to step on when the seedling tray 189 is placed on the seedling stage 190. As shown in fig. 2, the step S is located at a position overlapping with the end portion of the seedling stage 190 on the outer side in the machine width direction K2. In the front-rear direction K1, the pedal S is positioned to overlap the front chairs 187A, 187B.

As shown in fig. 3, the seedling stage 190 is disposed so as to extend above the 1 st seedling supply device 38A and above the 2 nd seedling supply device 38B. However, the seedling stage 190 does not cover the upper parts of the seedling supply cups 171 and 172 positioned on the front surfaces of the operators sitting on the chairs 187.

The operator can supply the seedlings N from the seedling trays 189 on the seedling stage 190 to the seedling supply cups 171, 172. Since the seedling stage 190 is disposed so as to extend above the 1 st seedling supply device 38A and above the 2 nd seedling supply device 38B, an operator sitting on each of the 1 st front chair 187A, the 2 nd front chair 187B, the 1 st rear chair 187C, and the 2 nd rear chair 187D can take out the seedlings N from the seedling tray 189 on the seedling stage 190. That is, the seedling stage 190 is disposed at a position where an operator sitting on each chair 187 can take out the seedling N from the seedling tray 189 on the seedling stage 190.

If no seedling is present in the seedling tray 189 on the seedling stage 188, the operator can supply the seedling N in the seedling tray 189 on the seedling stage 190 to the seedling supply cups 171 and 172. That is, the seedling stage 190 is a stage on which the prepared seedling tray 189 is placed. If no seedling N is present in the seedling tray 189 on the seedling supply table 188, the empty Miao Tuopan tray 189 may be exchanged with the seedling tray 189 on the seedling stage 190. Instead of providing the seedling supply table 188 located on the front side of each worker, the seedling stage 190 may be a common seedling supply table for each worker.

When the seedling tray 189 on the seedling stage 190 is Miao Biankong, a new seedling tray 189 containing seedlings must be supplied to the seedling stage 190.

When the transplanting operation is performed while the transplanting machine 3 is driven, the seedling carrying vehicle loaded with a new seedling tray for accommodating seedlings is carried along laterally of the transplanting machine 3. Conventionally, when no seedling is placed on the seedling stage 190, the tractor is temporarily stopped, and Miao Tuopan loaded on the seedling conveying vehicle is transferred to the seedling stage 190 of the transplanting machine 3.

However, in the present embodiment described above, miao Tuopan 189 can be slidingly mounted on the seedling stage 190 from the side of the moving transplanting machine 3 without stopping the tractor. Specifically, if the groove 189b of the seedling tray 189 is placed in the guide 190b (see fig. 10) of the seedling stage 190 and the seedling tray 189 is pushed in the direction indicated by the arrow in fig. 11, the seedling tray 189 can be placed on the seedling stage 190.

As shown in fig. 11, by sliding the first tray Miao Tuopan 189, the first tray 189 is pushed by the next tray 189, and the first tray 189 is moved, so that the first tray Miao Tuopan 189 hits the frame 190c by pushing in 4 trays 189. In such a transfer operation, the operator can put his/her foot on the step S (see fig. 2 and 3), so that the seedling tray 189 can be more easily loaded on the seedling stage 190 located at a high position.

In the present invention, the seedling stage 190 is not limited to the structure shown in the above embodiment. For example, the mounting portion 190a may be formed of a single plate member, and the guide portion 190b may be attached to the upper surface of the plate member. The guide portion 190b is not limited to be provided over the entire length in the machine width direction K2, and may be provided only in a part of the machine width direction K2. However, the guide portion 190b is preferably provided at least on one end side and the other end side in the machine width direction K2. In the above embodiment, the guide portion 190b is not limited to one for one seedling tray 189, and may be provided in plurality for one seedling tray 189. In the above embodiment, the seedling stage 190 is provided with three layers in the up-down direction, but the number of layers is not limited to this. In addition, the place where the seedling stage 190 is provided is not limited to the stage 132. The seat is not limited to being provided between the front chair and the rear chair.

As shown in fig. 3, 4, and 12 to 19, the transplanting machine 3 according to an embodiment of the present invention includes a structure for preventing swinging in a state where the bottom cover is opened to stabilize falling of seedlings when the bottom cover of the seedling supply cups 171, 172 of the seedling supply device 38 is opened, and this structure will be described below.

The transplanting machine 3 is provided with a planting device 39 for planting seedlings in a field, and a seedling supply device 38 for supplying seedlings N to the planting device 39. The seedling feeding device 38 has seedling feeding cups 171, 172 that receive the seedling N and drop it toward the planting device 39. The seedling supply cups 171 and 172 have: a cylindrical cup body 181 having a receiving port 181a for the seedling N at an upper portion and a falling port 181b for the seedling N at a lower portion; a bottom cover 183 capable of closing or opening the drop port 181b; a hinge part connecting the bottom cover 183 to the cup main body 181 in an openable and closable manner; a biasing member for biasing the bottom cover 183 in a direction to open the drop port 181b; and a restricting portion P restricting a position when the bottom cover 183 is opened.

The following is a detailed description.

Fig. 12 is a plan view of the seedling feeding device 38.

The seedling feeding device 38 is a device that drops and feeds seedlings to a planting tool 64 of a planting device 39 located below the seedling feeding device 38.

Since the 1 st seedling feeding device 38A and the 2 nd seedling feeding device 38B shown in fig. 3 have the same structure, the structure of the 1 st seedling feeding device 38A is illustrated in fig. 12, the description of the 2 nd seedling feeding device 38B is omitted, and in the drawings and descriptions thereof shown in fig. 12 and the following, the description of the 1 st and 2 nd seedlings and the reference numeral A, B are omitted.

As shown in fig. 3, the seedling feeding device 38 is supported by the transplanter frame 37 (see fig. 3). As shown in fig. 12, the seedling supply device 38 includes a plurality of seedling supply cups 171 and 172 into which seedlings N are put. The plurality of supply cups includes a plurality of 1 st supply cups 171 and a plurality of 2 nd supply cups 172. In the present embodiment, the number of 1 st supply cup 171 and the number of 2 nd supply cup 172 are 11, and the total number of supply cups is 22. The 1 st supply cup 171 and the 2 nd supply cup 172 are arranged along an annular conveying path R1 (see fig. 4) extending in the front-rear direction K1.

Specifically, the 1 st supply cup 171 and the 2 nd supply cup 172 are arranged in a ring shape so as to be oblong in the front-rear direction K1 in plan view. The 1 st supply cup 171 and the 2 nd supply cup 172 are alternately arranged along the elliptical conveying path R1.

The 1 st supply cup 171 and the 2 nd supply cup 172 are intermittently conveyed along the conveyance path R1 in the direction of arrow Y1 (see fig. 4) by the conveyance mechanism 177 (see fig. 4). The conveying mechanism 177 includes a 1 st rotation body 178 (see fig. 4 and 5), a 2 nd rotation body 179, and a cable 180. The 1 st rotary body 178 and the 2 nd rotary body 179 are constituted by sprockets, and the cable 180 is constituted by endless (endless) chains wound around the 1 st rotary body 178 and the 2 nd rotary body 179. The 1 st supply cup 171 and the 2 nd supply cup 172 are disposed along the cable body 180 on the outer peripheral side of the cable body 180.

As shown in fig. 4, the 1 st rotation body 178 rotates by transmitting power through the 3 rd transmission mechanism 115c and the 4 th transmission mechanism 115 d. Thereby, the cable 180, the 1 st supply cup 171, and the 2 nd supply cup 172 move in the arrow Y1 direction. As shown in fig. 4, the power is transmitted to the 1 st rotating body 178 of the 2 nd seedling supply device 38B via the 5 th transmission mechanism 115e and the 6 th transmission mechanism 115 f.

As shown in fig. 15, the 1 st supply cup 171 includes: a cylindrical cup body 181 for accommodating the seedling N (see fig. 19) to be put in, a mounting portion 182 (see fig. 18) mounted on the rope 180, and a bottom cover 183 for closing the opening at the lower end of the cup body 181. The cup main body 181 has a receiving port 181a for the seedling N in an upper portion and a dropping port 181b for the seedling N in a lower portion (see fig. 14 and 18). The 2 nd supply cup 172 is also of the same construction.

As shown in fig. 15 to 17, the 1 st supply cup 171 includes a hinge portion H that connects the bottom cover 183 to the cup main body 181 in an openable and closable manner. The hinge portion H is disposed outside the drop port 181 b. The hinge portion H has a hinge axis H1.

A shaft support portion H2 for supporting the hinge shaft H1 and a reinforcing rib H3 for reinforcing the shaft support portion H2 are protruded on the outer circumferential surface of the cup main body 181. The reinforcing rib H3 includes a 1 st reinforcing rib H3R provided at one end side of the hinge shaft H1 and a 2 nd reinforcing rib H3L provided at the other end side of the hinge shaft H1.

The 1 st supply cup 171 has a biasing member F that biases the bottom cover 183 in a direction to open the drop port 181 b. The urging member F is disposed outside the drop port 181 b. In the present embodiment, the urging member F is constituted by a coil spring externally fitted to the hinge shaft H1.

As shown in fig. 15 and 16, the 1 st supply cup 171 has a restricting portion P that restricts the position when the bottom cover 183 is opened.

The restricting portion P includes a bulge portion P1 formed on the outer peripheral surface of the cup main body 181 and an abutting portion P2 formed on the bottom cover 183. The abutment portion P2 is formed on the bottom cover 183. As shown in fig. 19, the abutment portion P2 abuts against the ridge portion P1 when the bottom cover 183 is opened.

According to this structure, the urging member F urges the bottom cover 183 in the direction of opening the drop port 181b, and therefore the abutment portion P2 of the bottom cover 183 at the time of opening abuts against the bulge portion P1 formed on the outer peripheral surface of the cup main body 181. Thereby, the bottom cover 18 is stably held in an opened state (a state in which the abutment portion P2 abuts against the ridge portion P1). Thus, the bottom cover 183 does not swing (swing variably) in the opened state, and the opened state can be stably maintained. Therefore, contact with the bottom cover 183 when the seedling N falls is prevented, and the falling of the seedling N can be smoothly performed.

Further, as shown in fig. 19, since the hinge portion H is disposed outside the drop port 181b, the drop port 181b is opened entirely. Therefore, contact with the bottom cover 183 when the seedling N falls is prevented, and the falling of the seedling N can be smoothly performed.

As shown in fig. 12 to 19, the seedling supply device 38 includes: a conveying mechanism 177 for conveying the seedling-feeding cups 171, 172 along a conveying path R1 having a circular shape in plan view; an inner member B1 disposed inside the conveying path R1 along the conveying path R1; and an outer member B2 disposed outside the conveying path R1 along the conveying path R1. The seedling-feeding cups 171, 172 have a guide portion B3, and the guide portion B3 guides the conveyance of the seedling-feeding cups 171, 172 along the conveyance path R1. The guide portion B3 includes an inner guide portion B3R that abuts against the inner member B1 and an outer guide portion B3L that abuts against the outer member B2.

The inner guide portion B3R has a 1 st portion B3R1 that abuts against the lower surface of the inner member B1 and a 2 nd portion B3R2 that abuts against the surface of the inner member B1 on the side of the conveyance path R1.

The following is a detailed description.

In the following description, the bottom cover 183 is denoted by the reference numeral 183a for the 1 st supply cup 171, and the bottom cover 183b for the 2 nd supply cup 172.

As shown in fig. 13, the bottom cover 183a of the 1 st supply cup 171 has a 1 st engagement portion 184a. The bottom cover 183b of the 2 nd supply cup 172 has a 2 nd engaging portion 184b. The 1 st engagement portion 184a protrudes toward the inner periphery of the conveyance path R1 (the cable 180) of the 1 st supply cup 171. The 2 nd engaging portion 184b protrudes toward the outer periphery of the conveyance path R1 (the cable 180) of the 2 nd supply cup 172. Fig. 15 shows a 1 st supply cup 171, and fig. 16 and 17 show a 2 nd supply cup 172.

As shown in fig. 13, the 1 st supply cup 171 is opened at the right bottom cover 183a of the conveyance path R1. The 1 st supply cup 171 indicated by the symbol OP1 is the 1 st supply cup 171 with the bottom cover 183a opened. The position indicated by the symbol D1 is a 1 st open position (an open position on one side in the machine width direction) in which the bottom cover 183a of the 1 st supply cup 171 is open. The 2 nd supply cup 172 is opened at the left bottom cover 183b of the transfer path R1. The 2 nd supply cup 172 indicated by the symbol OP2 is the 2 nd supply cup 172 with the bottom cover 183b opened. The position indicated by the symbol D2 is a 2 nd open position (an open position on the other side in the machine width direction) in which the bottom cover 183b of the 2 nd supply cup 172 is open. Fig. 14 shows a state in which the bottom cover 183b is opened in the 2 nd open position D2.

The 1 st open position D1 and the 2 nd open position D2 are seedling dropping positions, which are positions where the seedlings N are dropped and supplied to the planting tool 64. That is, the seedling feeding device 38 has a seedling dropping position as a position where the seedling is dropped and fed to the planting tool 64 at a middle portion in the front-rear direction of the conveyance path R1.

As shown in fig. 13, the 1 st open position D1 and the 2 nd open position D2 are set at different positions in the front-rear direction K1. In the present embodiment, the 1 st open position D1 is displaced from the 2 nd open position D2 in the forward direction. The left planting device of each transplanting unit is shifted in the forward position with respect to the right planting device in correspondence to the shift in the forward position of the 1 st open position D1 with respect to the 2 nd open position D2 (see fig. 6).

As shown in fig. 13, the seedling feeding device 38 includes a setting member 185 for setting the open positions (1 st open position D1 and 2 nd open position D2) of the seedling feeding cups 171 and 172. The setting member 185 includes a plurality of restricting levers (1 st restricting lever 186a to 6 th restricting lever 186 f).

The 1 st regulating lever 186a contacts the lower surfaces of the bottom caps 183a and 183b on the front side of the 1 st open position D1 and the 2 nd open position D2. Therefore, the 1 st restricting lever 186a restricts the opening of the bottom covers 183a, 183b on the front side of the 1 st opening position D1 and the 2 nd opening position D2. The 2 nd regulating lever 186b abuts against the lower surfaces of the bottom covers 183a, 183b at the rear side of the 1 st open position D1 and the 2 nd open position D2. Therefore, the 2 nd restricting lever 186b restricts the opening of the bottom covers 183a, 183b at the rear side of the 1 st opening position D1 and the 2 nd opening position D2.

The 3 rd regulating lever 186c abuts the 1 st engaging portion 184a of the bottom cover 183a on the rear side of the 1 st open position D1. Thereby, the 3 rd regulating lever 186c regulates the opening of the bottom cover 183a at the rear side of the 1 st open position D1. The 4 th regulating lever 186D abuts the 2 nd engaging portion 184b of the bottom cover 183b on the front side of the 2 nd open position D2. Thereby, the 4 th restricting lever 186D restricts the opening of the bottom cover 183b on the front side of the 2 nd open position D2.

The 5 th regulating lever 186e is located on the right side of the 1 st open position D1 (on the outer peripheral side of the conveyance path R1 (the cable body 180)) and abuts against the 2 nd engaging portion 184b of the bottom cover 183b located at the 1 st open position D1. Thereby, the opening of the bottom cover 183b at the 1 st opening position D1 is restricted. In addition, the opening of the bottom cover 183a of the 1 st open position D1 is allowed. The 6 th regulating lever 186f is located on the right side (inner peripheral side of the conveyance path R1 (the cable body 180)) of the 2 nd open position D2, and abuts against the 1 st engaging portion 184a of the bottom cover 183a located at the 2 nd open position D2. Thereby, the opening of the bottom cover 183a of the 2 nd open position D2 is restricted. In addition, the bottom cover 183b of the 2 nd open position D2 is allowed to be opened (refer to fig. 14).

As shown in fig. 19, the planting tool 64 of the planting device 39 (see fig. 5 and 6) is positioned below the open position D, and if the bottom cover 183 is opened, the seedling N is dropped, and the seedling N is supplied to the planting tool 64.

As shown in fig. 4, the seedling feeding device 38 has a conveying mechanism 177. The conveying mechanism 177 includes an idler sprocket (idle) 256 (see fig. 14 and 18) provided in the transplanter frame 37, and the idler sprocket 256 supports the rope 180. The conveying mechanism 177 conveys the seedling-feeding cups 171 and 172 along a conveying path R1 having a circular shape in plan view (see fig. 4, 12, and 14).

As shown in fig. 12, the seedling feeding device 38 includes an inner member B1 disposed inside the conveying path R1 along the conveying path R1, and an outer member B2 disposed outside the conveying path R1 along the conveying path R1. As shown in fig. 18, the inner member B1 and the outer member B2 are provided on the transplanter frame 37. Seedling supply cups 171 and 172 are disposed between inner member B1 and outer member B2.

The outer edge of the inner member B1 has a vertical guide surface B1a and a horizontal guide surface B1B. The vertical guide surface B1a and the horizontal guide surface B1B are located inside the seedling feeding cups 171, 172. The inner edge of the outer member B2 has a guide surface B2a. The guide surface B2a is located outside the seedling supply cups 171, 172. These guide surfaces B1a, B1B, B2a are arranged along the conveying path R1.

As shown in fig. 15 to 18, the seedling-feeding cups 171 and 172 have a guide portion B3, and the guide portion B3 guides the conveyance of the seedling-feeding cups 171 and 172 along the conveyance path R1. The guide portion B3 includes an inner guide portion B3R that abuts against the inner member B1 and an outer guide portion B3L that abuts against the outer member B2.

As shown in fig. 15 to 18, the inner guide portion B3R includes a 1 st portion B3R1 that abuts against the lower surface of the horizontal guide surface B1B of the inner member B1 and a 2 nd portion B3R2 that abuts against the vertical guide surface B1a of the inner member B1. An attachment portion 182 is provided in the inner guide portion B3R, and the links of the cable body 180 are attached to the attachment portion 182.

According to the above configuration, when the seedling-feeding cups 171 and 172 are conveyed along the conveying path R1, the inner guide portion B3R abuts against the inner member B1, and the outer guide portion B3L abuts against the outer member B2, so that the seedling-feeding cups 171 and 172 can be prevented from tilting or collapsing during conveyance, and therefore the seedling-feeding cups 171 and 172 can be stably conveyed along the conveying path R1.

In the present invention, the restricting portion P is not limited to the above-described ridge portion P1 and abutment portion P2, and may be any member that restricts the position when the bottom cover 183 is opened.

The transplanting machine 3 of the present embodiment achieves the following effects.

The transplanting machine 3 comprises: a planting device 39 for planting the seedling N in the field; a seedling supply device 38 that supplies the seedling N to the planting device 39; and a seedling stage 190 for placing a seedling tray 189, the seedling tray 189 accommodating the seedlings N supplied to the seedling supplying device 38; miao Tuopan 189A plurality of accommodating recesses 189a capable of accommodating seedlings individually are formed in a vertically and horizontally aligned manner on the upper surface, and a groove 189b is formed on the lower surface, and the groove 189b is formed between adjacent accommodating recesses 189a and extends in the aligned direction, and the seedling stage 190 has a placement portion 190a for placing the seedling tray 189 and a guide portion 190b for guiding movement of the seedling tray 189 on the placement portion 190a, and the guide portion 190b is provided so as to protrude upward from the placement portion 190a, and enters the groove 189b and extends along the groove 189b when the seedling tray 189 is placed on the placement portion 190 a.

According to this configuration, since the seedling tray 189 can be slid along the guide portion 190b, the seedling tray 189 can be rapidly supplied to the seedling stage 190.

The guide 190b extends in the width direction perpendicular to the front-rear direction of the transplanting machine 3, and guides the movement of the seedling tray 189 on the placement unit 190a in the width direction.

According to this configuration, since the seedling tray 189 can be supplied to the placement unit 190a from the side of the transplanting machine 3, the seedling tray 189 can be loaded onto the seedling stage 190 from the seedling carrying vehicle or the like accompanied by the transplanting machine 3 without stopping the transplanting operation.

Further, the guide portion 190b extends from one end portion to the other end portion in the width direction of the seedling stage 190.

With this configuration, the Miao Tuopan 189 can be reliably slid and placed from one end to the other end of the seedling stage 190 in the width direction.

The seedling stage 190 has a rectangular frame 190c in plan view, and the guide portions 190b connect opposite sides of the frame 190 c.

According to this configuration, since the Miao Tuopan 189 can be slid along the guide portion 190b while being surrounded by the frame 190c, the Miao Tuopan 189 can be prevented from falling off the seedling stage 190 during the sliding movement. The frame 190c can be reinforced by the guide 190 b.

The seedling loading table 190 is disposed above the seedling supply device 38 and between the front chairs 187A and 187B and the rear chairs 187C and 187D, and the guide portion 190B extends in the width direction, and includes the chairs 187 capable of being seated by the operator who supplies the seedlings N to the seedling supply device 38, the chairs 187 including the front chairs 187A and 187B disposed in front of the seedling supply device 38 and the rear chairs 187C and 187D disposed behind the seedling supply device 38.

With this configuration, an operator sitting on the chair 187 can easily take out the seedling N from the seedling tray 189 supplied to the seedling stage 190. Further, the operator sitting on the chair 187 can easily slide the seedling tray 189 along the guide 190 b.

The seedling stage 190 includes a plurality of seedling stages 190 arranged in a vertical direction, and a step S is provided at a position on the outer side in the width direction of the seedling stage 190 and higher than the ground surface, and the step S enables an operator to step on when the seedling tray 189 is placed on the seedling stage 190.

According to this configuration, the operator can easily and reliably supply the seedling tray 189 to the seedling stage 190 at the high position by stepping on the pedal S. Thus, even if the seedling stage 190 is formed in multiple layers, the seedling trays 189 can be easily supplied to the seedling stage 190 on the upper layer, and the number of seedling trays 189 that can be placed on the seedling stage 190 can be increased.

The transplanting machine 3 comprises: a planting device 39 for planting the seedling N in the field; and a seedling supply device 38 for supplying the seedling N to the planting device 39, wherein the seedling supply device 38 has seedling supply cups 171 and 172 for receiving the seedling N and dropping the seedling N toward the planting device 39, and the seedling supply cups 171 and 172 have: a cylindrical cup body 181 having a receiving port 181a for the seedling N at an upper portion and a falling port 181b for the seedling N at a lower portion; a bottom cover 183 capable of closing or opening the drop port 181b; a hinge part H for connecting the bottom cover 183 to the cup body 181 in an openable and closable manner; a biasing member F for biasing the bottom cover 183 in a direction to open the drop port 181b; and a restricting portion P restricting a position when the bottom cover 183 is opened.

According to this structure, when the bottom cover 183 is opened, the open position of the bottom cover 183 is determined by the urging member F and the restricting portion P. This prevents the seedling N from coming into contact with the bottom cover 183 when it falls, and the seedling N is stably fallen.

The restricting portion P includes a bulge portion P1 formed on the outer peripheral surface of the cup main body 181, and an abutment portion P2 formed on the bottom cover 183 and abutting the bulge portion P1 when the bottom cover 183 is opened.

According to this structure, the contact portion P2 of the bottom cover 183 can contact the bulge portion P1 formed on the outer peripheral surface of the cup main body 181, and the open position of the bottom cover 183 can be reliably determined.

The biasing member F is disposed outside the drop port 181b.

According to this structure, the soil of the seedling N dropped from the drop port 181b does not adhere to the urging member F, and rust of the urging member F can be prevented.

The hinge portion H is disposed outside the drop port 181b.

According to this structure, the bottom cover 183 can open the drop port 181b of the cup main body 181 in a fully opened state.

Further, a shaft support portion H2 for supporting the hinge shaft H1 of the hinge portion H and a reinforcing rib H3 for reinforcing the shaft support portion H2 are provided to protrude from the outer peripheral surface of the cup main body 181, and the reinforcing rib H3 includes a 1 st reinforcing rib H3R provided on one end side of the hinge shaft H1 and a 2 nd reinforcing rib H3L provided on the other end side of the hinge shaft H1.

According to this structure, the strength of the hinge portion H is improved by the reinforcing rib H3. Therefore, the hinge H can be prevented from being broken by repeatedly opening and closing the bottom cover 183.

The seedling supply device 38 further includes: a conveying mechanism 177 for conveying the seedling supply cups 171 and 172 along a conveying path R1 having a circular shape in plan view; an inner member B1 disposed inside the conveying path R1 along the conveying path R1; and an outer member B2 disposed outside the conveyance path R1 along the conveyance path R1, the seedling-feeding cups 171, 172 having a guide portion B3 for guiding conveyance of the seedling-feeding cups 171, 172 along the conveyance path R1, the guide portion B3 including an inner guide portion B3R abutting the inner member B1 and an outer guide portion B3L abutting the outer member B2.

According to this configuration, the seedling-feeding cups 171 and 172 can be stably conveyed along the conveying path R1 while preventing the seedling-feeding cups 171 and 172 from tilting.

The inner guide portion B3R has a 1 st portion B3R1 that abuts against the lower surface of the inner member B1 and a 2 nd portion B3R2 that abuts against the surface of the inner member B1 on the side of the conveyance path R1.

According to this configuration, the upward and downward movement of the seedling-feeding cups 171 and 172 can be prevented, and the seedling-feeding cups 171 and 172 can be stably conveyed along the conveying path R1.

While the embodiment of the present invention has been described above, the embodiment disclosed herein is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims, rather than by the description above, and includes all modifications equivalent in meaning and scope to the claims.

Description of the reference numerals

3 transplanting machine

38 seedling feeding device

39 planting device

171 seedling supply cup

172 seedling supply cup

177 conveying mechanism

181 cup main body

181a receiving opening

181b drop-off opening

183 bottom cover

187 chair

187A front chair

187B front chair

187C rear chair

187D rear chair

189 and 189 Miao Tuopan

189a receiving recess

189b groove portion

190 seedling carrying table

190a mounting portion

190b guide

190c frame

B1 inner guide member

B2 outside guide member

B3 guide part

B3R inner guide part

B3L outside guide part

B3R1 site 1

B3R2 site 2

P limiting part

P1 bump

P2 contact part

R1 transmission path

H hinge part

H1 hinge shaft

H2 shaft support part

H3 reinforcing rib

H3R 1 st reinforcing rib

H3L 2 reinforcing rib

F force application component

N seedlings

S pedal

Claims (13)

1. A transplanting machine is characterized in that,

the transplanting machine comprises:

a planting device for planting the seedlings in the field;

a seedling supply device for supplying seedlings to the planting device; and

a seedling stage for placing a seedling tray for accommodating the seedlings supplied to the seedling supplying device,

the Miao Tuopan includes a plurality of accommodating recesses formed in the upper surface in a vertically and horizontally aligned manner, each accommodating recess being capable of accommodating a seedling individually, and a groove formed in the lower surface, the groove being formed between adjacent accommodating recesses and extending in the aligned direction,

the seedling stage has a loading part for loading the seedling tray and a guiding part for guiding the Miao Tuopan movement on the loading part,

the guide portion protrudes upward from the mounting portion, and enters the groove portion and extends along the groove portion when the seedling tray is mounted on the mounting portion.

2. The transplanting machine according to claim 1, wherein,

the guide portion extends in a width direction orthogonal to a front-rear direction of the transplanting machine, and guides movement of the seedling tray on the placement portion in the width direction.

3. The transplanting machine according to claim 2, wherein,

the guide portion extends from one end portion to the other end portion of the seedling stage in the width direction.

4. The transplanting machine according to any one of claims 1 to 3, wherein,

the seedling carrying platform is provided with a square frame body in a overlooking mode, and

the guide portion connects the two opposite sides of the frame.

5. The transplanting machine according to claim 2 or 3, wherein,

the transplanting machine is provided with a chair capable of seating an operator who supplies seedlings to the seedling supply device,

the chair comprises a front chair arranged in front of the seedling feeding device and a rear chair arranged behind the seedling feeding device,

the seedling stage is disposed above the seedling supply device and between the front chair and the rear chair, and the guide portion extends in the width direction.

6. The transplanting machine according to any one of claims 1 to 5, wherein,

the seedling carrying platform comprises a plurality of seedling carrying platforms which are arranged in an up-down direction,

a pedal is provided at a position outside the seedling stage in the width direction and higher than the ground surface, and the pedal can be used for an operator to climb on when the Miao Tuopan seedling stage is placed.

7. A transplanting machine is characterized in that,

the transplanting machine comprises:

a planting device for planting the seedlings in the field; and

a seedling supply device for supplying the seedlings to the planting device,

the seedling feeding device is provided with a seedling feeding cup for receiving the seedling and making the seedling fall down to the planting device,

the seedling supply cup comprises:

a cylindrical cup body having a seedling receiving opening at an upper portion and a seedling dropping opening at a lower portion;

a bottom cover capable of closing or opening the drop port;

a hinge part for connecting the bottom cover to the cup main body in an openable and closable manner;

a biasing member for biasing the bottom cover in a direction to open the drop port; and

and a limiting part for limiting the position of the bottom cover when opening.

8. The transplanting machine according to claim 7, wherein,

the restriction portion includes:

A bulge part formed on the outer peripheral surface of the cup main body; and

and an abutting portion formed on the bottom cover and abutting against the bulge portion when the bottom cover is opened.

9. The transplanting machine according to claim 6 or 7, wherein,

the urging member is disposed outside the drop port.

10. The transplanting machine according to any one of claims 6 to 8, wherein,

the hinge part is arranged outside the falling opening.

11. The transplanting machine according to claim 10, wherein,

a shaft supporting part and a reinforcing rib are arranged on the outer circumferential surface of the cup main body in a protruding way, the shaft supporting part supports the hinge shaft of the hinge part, the reinforcing rib reinforces the shaft supporting part,

the reinforcing rib includes a 1 st reinforcing rib provided at one end side of the hinge shaft and a 2 nd reinforcing rib provided at the other end side of the hinge shaft.

12. The transplanting machine according to any one of claims 7 to 11, wherein,

the seedling supply device comprises:

a conveying mechanism for conveying the seedling supply cups along a conveying path which is annular in plan view;

an inner member disposed along the conveying path and inside the conveying path; and

An outer member disposed along the transport path outside the transport path,

the seedling feeding cup is provided with a guiding part for guiding the conveying of the seedling feeding cup along the conveying path,

the guide portion includes an inner guide portion that abuts the inner member and an outer guide portion that abuts the outer member.

13. The transplanting machine according to claim 12, wherein,

the inner guide portion has a 1 st portion that abuts against a lower surface of the inner member and a 2 nd portion that abuts against a surface of the inner member on the conveyance path side.

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