JP2023151047A - Transplanter - Google Patents

Abstract

To provide a transplanter for single-row planting capable of reliably supplying planting articles to a planting device and also capable of being simply configured.SOLUTION: A transplanter for single-row planting which plants planting articles on a farm field, comprises: a conveying device which is mounted on a travel vehicle body, and conveys the planting articles in a front-back direction; and a planting device which is disposed on a lower side in a conveying direction of the conveying device, and receives the planting articles conveyed by the conveying device and plants the planting articles on the farm field. The conveying device and the planting device are disposed at a substantially center part in a machine body width direction. The conveying device comprises a plurality of charging parts arrayed side by side at a fixed pitch along the conveying direction of the conveying device, into which the planting articles are charged by an operator, and each time the planting device performs a series of planting operations, the planting articles charged into each charing part are conveyed pitch by pitch.SELECTED DRAWING: Figure 1

Description

The present invention relates to a transplanter for planting vegetable seedlings, potato seed potatoes, and bulbs such as radish in a field.

2. Description of the Related Art Conventionally, a transplanting machine is known that includes a planting device for planting vegetable seedlings, seed potatoes, bulbs, etc. in a field, and a feeding device for dropping seed potatoes and bulbs onto the planting device. In the following, seedlings, seed potatoes, bulbs, etc. that are transplanted to the field by a transplanter are referred to as "plants."

For example, Patent Document 1 discloses a transplanter having a supply device in which a supply cup for storing a plant can be rotated around.

Japanese Patent Application Publication No. 2013-48570

The transplanter disclosed in Patent Document 1 has a single-row planting configuration with a single planting device, but the feeding device is configured for multiple-row planting, as shown in FIG. The route along which the supply cup goes around extends long in the width direction of the machine, and there are a plurality of positions where the plants are dropped and supplied. Therefore, only plants contained in one of the two or four feeding cups are drop-fed into a single planting device.

For this reason, when storing plants in the supply cups, the operator needs to put the plants into every other or every third of the large number of supply cups. There is a problem in that if the plants are accidentally placed in another supply cup, the plants are not fed to the planting device and fall onto the field.

In addition, a feeding device equipped with a large number of feeding cups requires a large number of parts, including a transmission system that receives power from a transmission case, etc., resulting in a problem that the configuration of the transplanting machine becomes complicated.

Therefore, an object of the present invention is to provide a single-row planting machine that can reliably supply plants to a planting device and that can be simply configured.

Such an object of the present invention is to
A single row planting machine for planting plants in a field,
A traveling vehicle body that runs in a field,
a conveyance device that is attached to the traveling vehicle body and conveys the plants in the front-back direction;
a planting device that is disposed on the downstream side of the conveyance device in the conveyance direction and receives the plants conveyed by the conveyance device and plants them in the field;
The conveyance device and the planting device are arranged approximately in the center in the width direction of the machine,
The conveyance device includes a plurality of input parts into which plants are inputted by an operator and lined up at a constant pitch along the conveyance direction of the conveyance device, and each time the planting device performs a series of planting operations, , a transplanter characterized in that the plants introduced into each input section are conveyed one pitch at a time.

Further, according to the present invention, the conveyance device and the planting device are arranged approximately at the center in the width direction of the machine body, and the plants are conveyed linearly from the conveyance device to one side of the front and back where the planting device is arranged. Because it is structured, it can be configured simply.

According to the present invention, since the conveyance device is configured to convey the plants to the planting device one pitch at a time, which is the input interval of the plants, it is possible to reliably supply the plants to the planting device. can.

In a preferred embodiment of the invention,
The traveling vehicle body includes a floor step on which a worker rides,
The conveyance device is arranged in a height range above the floor step and below the lower surface of the seat on which the worker is seated,
The seat is located approximately at the center in the width direction of the aircraft,
A front end of the conveyance device is located further forward than a rear end of the seat.

According to this preferred embodiment of the present invention, the seat on which the worker sits, the transport device, and the planting device are all arranged approximately at the center in the width direction of the machine body, so the width of the machine body can be made compact. be able to.

In addition, according to this preferred embodiment of the present invention, the front end of the conveying device, which is unsuitable for introducing plants, is located under the seat, so the longitudinal length of the aircraft can be made compact. Can be done.

Furthermore, according to this preferred embodiment of the present invention, the height of the machine body can be suppressed because the conveyance device is disposed above the floor step and below the lower surface of the work seat. In addition, when moving in the width direction of the machine, the operator can easily straddle the transport device.

In a further preferred embodiment of the invention,
The planting device includes a planting hopper that plants the plants in the field, and a guide member that receives the plants transported by the transport device and guides them to the planting hopper,
In a state where the planting hopper is located at the top dead center, the planting operation is configured such that at least a portion of the planting hopper is located below the rear end of the conveyance device,
The guide member is formed into a substantially C-shape so that a portion overlapping with a rear end portion of the conveyance device is cut out in plan view.

According to this preferred embodiment of the present invention, the guide member has a shape in which a portion overlapping with the rear end of the conveyance device is cut out, and at least a portion of the planting hopper is located below the rear end of the conveyance device. Therefore, even if the planted material does not fly to the guide member and falls immediately below from the rear end of the conveyance device, the planted material can be directly sent into the planting hopper.

In a further preferred embodiment of the invention,
The conveyance device is configured to move the input unit by one pitch at a timing when the planting hopper reaches near the top dead center in a series of planting operations.

According to this preferred embodiment of the present invention, the conveying device is configured to move the feeding section by one pitch at the timing when the planting hopper reaches near the top dead center, so that the planting material can be planted. It can be reliably fed into the hopper.

In a further preferred embodiment of the invention,
comprising a mileage sensor that detects the mileage of the traveling vehicle body, and a detection means that detects that the planting material is stored in the planting hopper,
When it is detected that the planting material is stored in the planting hopper and that the traveling vehicle body has traveled a predetermined distance or more since the previous series of planting operations, a series of planting operations is performed. The operation starts,
If it is not detected that plants have been stored in the planting hopper and it is detected that the traveling vehicle body has traveled a predetermined distance or more since the previous series of planting operations, the traveling vehicle body After the traveling of the plant is stopped, a series of planting operations are performed, and then the conveyance device moves the input section by one pitch, and it is detected that the plants are stored in the planting hopper. Then, after a series of planting operations are performed, the traveling vehicle body resumes running.

According to this preferred embodiment of the present invention, it is detected that the planting material is stored in the planting hopper, and that the traveling vehicle body has traveled a predetermined distance or more since the series of planting operations. Then, since the planting device is configured to start a series of planting operations, the spacing between the plants can be kept constant.

Further, according to this preferred embodiment of the present invention, it is not detected that the planting material is stored in the planting hopper, and the traveling vehicle body has traveled a predetermined distance or more since the previous series of planting operations. When this is detected, the running of the traveling vehicle is stopped and a series of planting operations are performed.After that, when it is detected that plants have been stored in the planting hopper, a series of planting operations is performed. The structure is such that the running vehicle resumes running after the operation is completed, so even if planting material is not put into one of the feeding sections due to a feeding error, it will be possible to re-start the running of the vehicle in a field where no planting has been done. Planting can be done reliably at a certain spacing without creating any areas.

In a further preferred embodiment of the invention,
As the travel distance sensor, a compacting wheel is provided that compacts the soil while rolling over a field where plants are planted,
The suppression ring is provided with a protrusion on the outer peripheral edge,
A travel distance of the traveling vehicle body is calculated based on the rotation speed of the suppression wheel.

According to this preferred embodiment of the invention, the number of parts of the transplanter can be reduced by using the compaction wheel that compacts the soil in the field as a travel distance sensor.

In addition, according to this preferred embodiment of the invention, the suppression wheel is provided with projections on its outer periphery, which prevents it from slipping while rolling over the field, thus ensuring accurate mileage. It can be calculated.

According to the present invention, it is possible to provide a single-row planting machine that can reliably supply plants to a planting device and that can be configured simply.

FIG. 1 is a schematic left side view of a transplanter according to a preferred embodiment of the present invention. FIG. 2 is a schematic plan view of the transplanter shown in FIG. 1. FIG. 3 is a control block diagram of the transplanter shown in FIG. 1. 4 is an enlarged side view of the conveying device shown in FIG. 1. FIG. FIG. 5 is a schematic rear view of the planting device shown in FIG. 1. 6 is a partially enlarged perspective view of the upper part of the planting device shown in FIG. 1. FIG. FIG. 7 is a schematic left side view of the vicinity of the motor case 20 shown in FIG. FIG. 8 is a flowchart showing control of the supply of plants P from the transport device to the planting device and the planting operation by the control device when the planting work is started. FIG. 9(a) is a schematic front view of the vicinity of the left front wheel, and FIG. 9(b) is a schematic partial cross-sectional left side view of the connecting portion between the front wheel frame attached to the front wheel and the front wheel shaft. 9(c) is a schematic plan view of the connecting portion shown in FIG. 9(b). FIG. 10 is a schematic left side view showing the vicinity of the ridge end detection sensor of the transplanting machine shown in FIG. FIG. 11(a) is a schematic left side view of a connection portion between a front wheel frame attached to a left front wheel and a front wheel shaft according to another preferred embodiment of the present invention, and FIG. 11(a) is a schematic plan view of the connecting portion shown in FIG. 12 is a schematic left side view of the ridge end detection sensor according to the embodiment shown in FIG. 11. FIG. 13(a) is a left side view of main parts showing the attachment relationship between the ridge end detection sensor and the ridge end sensor stay of another embodiment of FIG. 10, and FIG. ) is a left side view of a main part showing a state in which each member shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a schematic left side view of a transplanter 1 according to a preferred embodiment of the present invention, and FIG. 2 is a schematic plan view of the transplanter 1 shown in FIG. 1.

Further, FIG. 3 is a control block diagram of the transplanter 1 shown in FIG. 1.

In this specification, unless otherwise specified, the side in the direction of movement of the transplanter 1 is referred to as the "front", the opposite side is referred to as the "rear", and the left side toward the front, which is the direction of travel of the transplanter 1, is referred to as the "front". The opposite side is called the "left" and the opposite side is called the "right."

The transplanter 1 includes a traveling vehicle body 2 that moves the machine forward, a control device 75 that controls the entire transplanter 1, a planting device 3 having a planting hopper 62 that plants the plants P in the field, and the planting hopper 62. A transport device 6 that transports the plants P, a motor case 20 that accommodates a hopper lifting motor 41 (see FIG. 3) that raises and lowers the planting hopper 62, and a handle frame 23 that extends rearward from the motor case 20. The soil around the control part 76 of the transplanter 1 provided on the handle frame 23, the mounting table 105 for the plants P attached to the handle frame 23, and the plants P planted by the planting device 3 is removed. A pair of left and right suppression wheels 90 are provided for suppression. In the following, the traveling vehicle body 2 is also simply referred to as a "vehicle body." In addition, in FIG. 2, the mounting table 105 and the suppression ring 90 are omitted for convenience.

In this embodiment, the transplanter 1 is configured as a transplanter that plants seed potatoes in a field, but the type of plants P to be planted in the field is not limited to seed potatoes.

The running vehicle body 2 includes a pair of left and right rear wheels 14 that are driving wheels, a pair of left and right front wheels 13 that are idle wheels (see FIG. 2), an engine 9 that is a rotational power source for the pair of rear wheels 14, and an engine 9. a transmission case 10 that changes the speed of the rotational power output from the transmission case 10, a pair of left and right traveling transmission cases 16 that transmits the rotational power to the pair of rear wheels 14, and a floor step 37 on which an operator rides and works or moves. and a work seat 18 on which a worker sits when putting the plants P into the transport device 6.

The shifted power output from the transmission case 10 is transmitted to the rear wheel axle 15 through a transmission mechanism within a pair of left and right traveling transmission cases 16. As a result, the rear wheels 14 rotate and the vehicle body 2 moves forward.

A clutch (shown in the figure) that connects and disconnects power transmission to the pair of traveling transmission cases 16 is provided within the transmission case 10 . The control device 75 can disconnect the clutch by driving a clutch motor 94 (see FIG. 3) that switches the clutch on and off as necessary to stop the vehicle from traveling.

The control device 75 includes a processing unit 79 having a CPU (Central Processing Unit), and a storage unit 80 having a main storage device and an auxiliary storage device, and the storage unit 80 stores various data, programs, etc. .

As the traveling vehicle body 2 travels on the field, the pair of left and right suppression wheels 90 rotate forward on both the left and right sides of the planting site by the planting device 3 on the ridge, thereby suppressing the area near the planting site. It can compact the soil.

FIG. 4 is an enlarged left side view of the conveyance device 6 shown in FIG.

The conveyance device 6 includes a drive pulley 39, a driven pulley 40 disposed in front of the drive pulley 39, an endless belt (closed loop belt) 45 wound around the drive pulley 39 and the driven pulley 40, and a drive pulley 40. 39 (see FIG. 3), and a tension pulley 49 that applies tension to the endless belt 45.

A large number of plate-shaped crosspieces 45a are provided on the outer surface of the endless belt 45 and arranged at equal intervals. An input section A (A1 to An) into which the plants P are input is formed. In other words, a large number of input portions A into which the plants P are input are formed in the upper part of the endless belt 45 in a manner that they are lined up at a constant pitch in the front-rear direction.

When the transport motor 56 is driven based on the drive signal output from the control device 75, the drive pulley 39 is rotated, and the endless belt 45 rotates clockwise as viewed from the left side (see FIGS. 1 and 4). The plants P loaded into each input section A are transported rearward.

Here, the amount of drive of the conveyance motor 56 at one time is controlled by the control device 75 to an amount by which the endless belt 45 rotates by the length of the arrangement interval of the crosspieces 45a (=the arrangement interval of the input section A). That is, each time the conveyance motor 56 is driven once, the endless belt 45 is rotated by the length of the arrangement interval of the crosspieces 45a, and each input section A is rotated by the length of the arrangement interval of the crosspieces 45a (=the length of the arrangement interval of the crosspieces A). (the length of the arrangement interval) to the downstream side (backward) in the conveyance direction.

For example, the input unit An-1 located second from the rear side is moved to the position of input unit An shown in FIG. 1 after being driven, and is moved to the position of An shown in FIG. After being driven, the input section that was previously placed is moved to a position facing a guide member 38, which will be described in detail later. In the following, the length (amount) by which the endless belt 45 is rotated by one drive of the transport motor 56 is referred to as "one pitch".

When the endless belt 45 is rotated by one pitch due to one drive of the conveyor motor 56, each plant P input into the input section A1 to An-1 by the operator is conveyed backward by one pitch. At the same time, the planting material P that was at the position of the input part An shown in FIG.

The transport motor 56 is controlled to be driven in synchronization with the planting operation of the planting device 3, which will be described in detail below, and every time the planting hopper 62 of the planting device 3 is raised to near the top dead center. Then, the transport motor 56 is driven only once, and the plants P located at the input section An shown in FIG. 1 are dropped and supplied into the planting hopper 62.

In this embodiment, the conveyance device 6 is attached to the floor step 37 of the traveling vehicle body 2 by a front frame 43 and a rear frame 44, and as shown in FIG. The front frame 43 and the rear frame 44 are arranged in a height range above the upper surface of the floor step 37 to which the front frame 43 and the rear frame 44 are attached.

In this way, by arranging the transport device 6 in the height range between the work seat 18 and the floor step 37, the height of the machine can be suppressed, and when the worker moves in the width direction of the machine, it is possible to reduce the height of the machine. , the transport device 6 can be easily straddled and moved.

Further, the front end of the transport device 6 is located further forward than the rear end of the work seat 18, and the front end of the transport device 6, which is not suitable for putting in the plants P, is placed below the seat 18. As a result, the longitudinal length of the body 1 can be made compact while maintaining the ease of inserting a transplant.

Further, as shown in FIG. 1, the transport device 6 and the work seat 18 are arranged approximately at the center in the width direction of the machine, and the worker can sit on the work seat 18 while straddling the transport device 6. Since the conveying device 6 does not get in the way, the work of loading the plants P into the conveying device 6 can be carried out comfortably even though the machine is compact.

In addition, in this embodiment, the driven pulley 40 is configured to be slidable in the front-rear direction integrally with the front frame 43, and by changing the front-rear position of the driven pulley 40, the tension of the endless belt 45 can be adjusted. Can be adjusted.

5 is a schematic rear view of the planting device 3 shown in FIG. 1, and FIG. 6 is a partially enlarged perspective view of the upper part of the planting device 3 shown in FIG. 1.

The planting device 3 includes a planting hopper 62 having a pair of left and right hopper structures 60 inserted into a field, a pair of left and right rotation arms 67 attached to each rotation support shaft 66, and a rotation arm 67 and a hopper. It is provided with a pair of left and right rotating plates 68 that connect the structural body 60 and a guide member 38 that guides the planting material P transported by the transport device 6 into the planting hopper 62. The planting hopper 62 is an example of the "planting tool" of the present invention.

In this embodiment, the planting device 3 is arranged approximately at the center in the width direction of the machine body, and therefore the planting device 3, the conveyance device 6, and the work seat 18 are arranged in a straight line in the front-rear direction. In other words, the approximately central portion in the width direction of the aircraft body is approximately the central portion of the tread width of the pair of left and right front wheels 13, and more specifically, the approximately central portion of the tread width of the pair of front wheels 13 is This is approximately the center portion in the width direction of the tread width, which is the left and right width between the center portions in the width direction of each front wheel 13 .

Further, in FIG. 6, the rotating arm 67, the rotating support shaft 66, and the rotating plate 68 are omitted for convenience of explanation.

Opening/closing wires 63, which will be described in detail later, are attached to each of the pair of rotating arms 67, and when the opening/closing wires 63 are pulled or loosened, the pair of rotating arms 67 move around the pivot shaft 66. As the planting hopper 62 is rotated around the center, the rotation plate 68 and the hopper structure 60 are rotated, and the planting hopper 62 is opened and closed.

The guide member 38 is a member that receives the plants P transported by the transport device 6 on its inner surface (front surface) and guides them to the planting hopper 62, and as shown in FIGS. 2 and 6, the plants P transported by the transport device 6 are It is constituted by a plate having a substantially C-shape in plan view with the portion overlapping with the rear end of the device 6 cut out.

By configuring the guide member 38 to have a substantially C-shape when viewed from above, the plants P are propelled backward by centrifugal force (inertial force) at the transport terminal end (rear end) of the transport device 6. Even if the plant P is blown away, it can be received by the guide member 38 and guided into the planting hopper 62.

In addition, the guide member 38 has a shape in which the portion that overlaps with the rear end of the conveyance device 6 is cut out, so that the planting hopper 62 located at the top dead center can be moved as shown in FIGS. 1 and 2. can be placed at a position that partially overlaps the rear end of the transport device 6 in plan view. In other words, the planting hopper 62 is configured to perform a planting operation such that a portion thereof is located below the rear end portion of the conveyance device 6 near the top dead center. Therefore, even if the planted material P does not fly backwards from the rear end of the conveyance device 6 but falls immediately below, the planted material P can be directly sent into the planting hopper 62.

The guide member 38 is made of a highly rigid resin that does not easily deform, and can suppress the planting material P from bouncing to the outside of the planting hopper 62 when it comes into contact with the guide member 38.

On the other hand, FIG. 7 is a schematic left side view of the vicinity of the motor case 20 shown in FIG.

A planting operation section 21 is connected to the left side of the motor case 20 and is operated by the driving force of a hopper lifting motor 41 that moves the planting device 3 up and down (up and down).

The planting operation unit 21 includes an elevating link mechanism 19 that includes an upper link arm 47 and a lower link arm 48 that move the planting device 3 up and down, and an opening/closing mechanism that opens and closes the planting hopper 62.

Specifically, as shown in FIG. 7, the planting operation unit 21 includes an elevating drive shaft 51 rotationally driven by a hopper elevating motor 41, and an unequal circular elevating cam attached to the elevating drive shaft 51. 50, a lifting crank 52 whose one end is attached to a rotating shaft extending from the lifting cam 50 toward the outside of the fuselage, and which rotates the upper link arm 47 up and down; 47, a connecting plate 53 attached to the inside of the machine body, and a hopper opening/closing cam 46 that rotates in response to the power output from the hopper lifting motor 41, and the hopper opening/closing cam 46 is non-circular (non-perfect circular). , an opening/closing arm 64 is provided with an opening/closing wire 63 attached to the upper end for opening/closing the planting device 3.

Hereinafter, the mechanism that causes the planting device 3 to perform a planting operation, that is, the lifting link mechanism 19 that raises and lowers the planting device 3 and opens and closes it, and the opening and closing mechanism are collectively referred to as a "planting operation mechanism."

When the elevating drive shaft 51 is rotated by the hopper elevating motor 41, the elevating cam 50, elevating crank 52, and connection plate 53 are driven, and the upper link arm 47 and lower link arm 48 are rotated rearward and upward. The motion of rotating backwards and downwards is repeated. As a result, the planting device 3 is raised and lowered. In FIG. 5, the front part of the upper link arm 47 is omitted to expose the hopper opening/closing cam 46, which has a non-circular longitudinal section.

The lower link arm 48 rotates up and down in conjunction with the upper link arm 47, and the lower end of the opening/closing arm 64 is rotatably attached to the front end of the lower link arm 48.

The front end of the upper link arm 47 is attached to the hopper opening/closing cam 46 via an adjustment plate 54. The mounting position is on the static trajectory of the planting device 3 (the trajectory when the vehicle is stopped; the trajectory T of the lower end of the hopper 62 is shown in FIG. 1), from when it receives the plants P from the transport device 6 until it heads toward the bottom dead center. During this period, the planting hopper 62 changes from a backward-tilting position to a position substantially perpendicular to the field scene, and when it starts to rise from the bottom dead center, it is set in a position where it changes from a substantially vertical position to a forward-tilting position. There is.

When the pair of upper and lower link arms 47 and 48 are moved up and down by the drive of the hopper lift motor 41, the planting device 3 rises to a position immediately below and in front of the endless belt 45 (see FIG. 1), and the planting hopper 62 is placed in the ridge. It descends to the position where it will be inserted.

Here, one end of the opening/closing wire 63 is attached to the upper end of the opening/closing arm 64 shown in FIG. 7, and the other end of the opening/closing wire 63 is attached to the rotating arm 67 shown in FIGS. 5 and 7.

A contact roller 65 is attached to the opening/closing arm 64, and when the outer peripheral surface of the large diameter portion of the hopper opening/closing cam 46, which rotates by the power received from the hopper lifting motor 41, comes into contact with the contact roller 65, the opening/closing arm 64 rotates. It is rotated forward (downward) around the dynamic fulcrum 70. As a result, the opening/closing wire 63 is pulled and the planting hopper 62 is closed.

Further, when the outer peripheral surface of the large diameter portion of the hopper opening/closing cam 46 no longer contacts the contact roller 65, the opening/closing arm 64 is rotated to the rear side, the opening/closing wire 63 is loosened, and the planting hopper 62 is opened. The opening/closing operation of the planting hopper 62 by the opening/closing wire 63 is performed in conjunction with the vertical movement (vertical movement) of the planting hopper 62 in conjunction with the vertical movement (vertical movement) of the pair of upper and lower link arms 47, 48.

Specifically, the period from when the planting hopper 62 receives the plants P from the transport device 6 and descends and is inserted into the ridge formed in the field until it passes the bottom dead center and begins to rise. During this period, the planting hopper 62 is opened and the plants P are planted in the ridges, and after the plants P are planted, they begin to rise until they receive the plants P from the conveyance device, descend again, and are inserted into the ridges. During this period, the planting hopper 62 is closed, and the plants P received from the conveyance device 6 are held inside the planting hopper 62. The shape of the hopper opening/closing cam 46 corresponds to the above opening/closing operation and lifting/lowering operation. In the following, the operation of lowering the planting hopper 62 from near the top dead center, opening it until it reaches the bottom dead center, raising it again, closing it before reaching the vicinity of the top dead center, and then raising it to the vicinity of the top dead center. We will refer to this as a series of planting actions and proceed with the explanation. Note that FIG. 1 shows a state in which the planting device 3 and its planting hopper 62 are at the top dead center.

The series of planting operations of the planting device 3 has been described in detail above, but below, the supply of the plants P from the transport device 6 to the planting device 3 and the control regarding the series of planting operations will be explained in detail. Add.

FIG. 8 is a flowchart showing control of the supply of the plants P from the transport device 6 to the planting device 3 and the planting operation by the control device 75 when the planting work is started.

In this embodiment, the planting device 3 is configured to stop near the top dead center at the end of the planting work of the plants P, and when starting the planting work, the planting device 3 is Located near the dead center.

When the control unit 76 is operated to start traveling with the planting of the plants P, the control device 75 first drives the conveyance motor 56 to rotate the endless belt 45 by one pitch, and rotates each input unit A by one pitch. The pitch is moved (step s1).

Next, the control device 75 determines whether the planting material P is accommodated in the planting hopper 62 (step s2).

In this embodiment, an ultrasonic sensor 78 (see FIG. 3) is arranged inside the planting hopper 62, and when the planting material P is stored in the planting hopper 62, the ultrasonic sensor 78 detects the The appendage P is detected and a detection signal is output to the control device 75.

In addition, instead of the ultrasonic sensor 78, for example, by providing the planting hopper 62 or the guide member 38 with a sensor that detects vibrations when the planting material P comes into contact with the planting material P, it is also possible to It becomes possible to determine whether or not P is accommodated.

As a result of the determination, if the plants P are not stored in the planting hopper 62, it is recognized that the introduced plants P have not reached the rear end of the conveyance device 6, so the ultrasonic sensor 78 The rotation of the endless belt 45 and the determination of whether the plant P is accommodated are repeated until the plant P is detected.

On the other hand, when it is detected as a result of the determination that the plants P are accommodated in the planting hopper 62, the control device 75 drives the hopper lifting motor 41 to The planting operation is started (step s3).

Next, the control device 75 determines whether the planting device 3 is located at a predetermined height or higher (step s4).

Specifically, a link sensor 77 that detects the inclination angle of the elevating link mechanism 19 is provided near the elevating link mechanism 19, and the control device 75 uses the detection signal of the inclination angle of the elevating link mechanism 19 to It is possible to determine whether the device 3 is higher than a predetermined height.

As a result of the determination, if the planting device 3 is located at a position below the predetermined height, the determination is repeated until the planting device 3 rises to a position equal to or higher than the predetermined height.

On the other hand, if the determination result is that the planting device 3 is at a position higher than the predetermined height, the control device 75 drives the conveyance motor 56 to rotate the endless belt 45 by one pitch, and is moved by one pitch (step s5).

In this embodiment, the predetermined height is a position slightly below the top dead center of the planting device 3. That is, the planting operation of the planting device 3 was started, the planting device 3 descended from near the top dead center to the bottom dead center, turned upward again, and rose to a position slightly below the top dead center. At this point, the transport device 6 is configured to transport the plants P to the rear.

With this configuration, the plants P can be dropped and supplied from the transport device 6 into the planting hopper 62 at the timing when the planting device 3 further rises to the vicinity of the top dead center. Misfeeding of the plants P to the attached hopper 62 can be prevented. Note that when the planting device 3 rises to near the top dead center, the driving of the transport motor 56 and the hopper lifting motor 41 of the transport device 6 is finished, and the planting device 3 is also temporarily stopped near the top dead center. .

In this way, when the endless belt 45 is rotated by one pitch, the control device 75 determines whether or not the plants P are accommodated in the planting hopper 62 (step s6).

As a result of the determination, if the planting material P is not stored in the planting hopper 62, it is recognized that there was an input section A in the conveying device 6 into which the planting material P was not introduced, so the control is performed. The device 75 stores a value of 1 in the storage unit 80 as information on the number of times M has not been inserted (step s8).

Next, the control device 75 determines whether or not the traveling vehicle body 2 has traveled a predetermined distance or more from the position of the vehicle body 2 at the time when the planting operation of the planting device 3 was started in step s3 (step s9). If the vehicle has not traveled more than a predetermined distance, the determination is repeated until the vehicle has traveled a predetermined distance or more.

On the other hand, if the determination result is that the vehicle has traveled a predetermined distance or more, the control device 75 drives the clutch motor 94 to stop the travel of the vehicle body 2 (step s10), and then controls the hopper lift motor 41. is driven to start the planting operation of the planting device 3 (step s11).

In this way, in the present embodiment, even if the planting material P is not stored in the planting hopper 62, by performing the planting operation of the planting device 3, the transportation device 6 can later actually plant the plants. When the object P is transported rearward, the planting hopper 62 can receive the object P near the top dead center. Therefore, mistakes in supplying the plants P to the planting hopper 62 can be prevented.

When the planting operation of the planting device 3 is started in this way, the control device 75 determines whether the planting device 3 is at a position higher than a predetermined height (step s12).

As a result of the determination, if the planting device 3 is located at a position below the predetermined height, the determination is repeated until the planting device 3 rises to a position equal to or higher than the predetermined height.

On the other hand, if the determination result is that the planting device 3 is at a position higher than the predetermined height, the control device 75 drives the conveyance motor 56 to rotate the endless belt 45 by one pitch, and is moved by one pitch (step s13).

Next, the control device 75 determines whether the planting material P is accommodated in the planting hopper 62 (step s14).

As a result of the determination, if the planting material P is not stored in the planting hopper 62, it is recognized that there was an input section A in the conveyance device 6 into which the planting material P was not introduced. The value stored as information on the number of inputs M is incremented by 1 (step s15).

Next, it is determined whether the number of times M of non-insertion exceeds a predetermined number of times Mref (step s16).

As a result of the determination, if the number of times of non-insertion M is less than or equal to the predetermined number of times Mref, the process proceeds to step s11 described above.

On the other hand, if the result of the determination is that the number of times M has not been inserted exceeds the predetermined number Mref, the control device 75 applies a pulse signal to the piezoelectric diaphragm 95 of the notification device (not shown) to sound a buzzer and After warning the person (step s17), the planting work is finished (step s18).

By configuring in this way, it is possible to prevent only the planting device 3 from continuing to be driven in a state where the planting material P is not put into the conveyance device 6, and to notify the operator that the planting work has been completed. can be notified.

On the other hand, as a result of the determination in step s14, if the planting material P is accommodated in the planting hopper 62, the control device 75 drives the hopper lifting motor 41 to start the planting operation of the planting device 3. (Step s19).

Next, the control device 75 causes the traveling vehicle body 2 to resume traveling (step s20), and returns to the determination in step s4.

On the other hand, as a result of the determination in step s6 described above, if the plants P are accommodated in the planting hopper 62, the control device 75 starts the planting operation of the planting device 3 in step s3. It is determined whether the vehicle has traveled a predetermined distance or more from the position of the traveling vehicle body 2 at (step s7).

In this embodiment, a suppression wheel rotation sensor 96 (see FIG. 3) that detects the number of rotations of the left suppression wheel 90 shown in FIG. It is configured to output to a control device 75.

The control device 75 can calculate the traveling distance of the traveling vehicle body 2 by multiplying the rotation speed of the suppression wheel 90 output from the suppression wheel rotation sensor 96 by the circumference length of the suppression wheel.

Here, as shown in FIG. 1, a projection (spike) protruding in the radial direction of the suppression ring 90 is provided at the outer peripheral edge of the left suppression ring 90 and at the center of the suppression ring 90 in the width direction (horizontal direction). It is formed.

Therefore, as the vehicle body 2 travels on the field, it is possible to prevent the left suppression wheel 90 from slipping when moving forward while rotating on the ridge, allowing the vehicle body 2 to travel accurately. Distance can be calculated.

Note that the suppression wheel 90 is attached to the rear end of the rotating arm 97, and the rotating arm 97 is urged by a spring (not shown) to rotate backward. Therefore, it is possible to prevent the suppression wheel 90 from bouncing while rotating on the ridge, and from this point as well, the control device 75 can accurately calculate the traveling distance of the traveling vehicle body 2. The left suppression wheel 90 is an example of the "mileage sensor" of the present invention.

As a result of the determination in step s7, if the traveling vehicle body 2 has not traveled a predetermined distance or more since the planting operation of the planting device 3 was started in step s3, the travel distance becomes the predetermined distance or more. The judgment is repeated until

On the other hand, as a result of the determination in step s7, if the traveling vehicle body 2 has traveled a predetermined distance or more since the planting operation of the planting device 3 was started in step s3, the control device 75 performs step s3. Then, the hopper lifting motor 41 is driven to start the planting operation of the planting device 3.

In this way, in the present embodiment, the next planting operation is started when a predetermined distance has been traveled from the time when the previous planting operation was started. The distance between the planted plants P can be kept constant.

Thereafter, the control device 75 starts the planting operation of the planting device 3 in the same manner, and when the planting device 3 rises to a position slightly below the top dead center, the control device 75 moves the planting hopper from the transportation device 6. When the plants P are supplied to the planting hopper 62 and the plants P are stored in the planting hopper 62, the planting operation starts when the plants have traveled a predetermined distance, and the plants P are stored in the planting hopper 62. If the plant P is not accommodated, the running of the vehicle body 2 is stopped, and the planting operation and the driving of the conveyance device 6 are repeated until the plant P is accommodated. Thereby, the transplanter 1 can reliably plant the plants P in the ridges of the field at predetermined spacing without missing any plantings.

On the other hand, the vehicle height of the traveling vehicle body 2 is configured to be adjustable by expanding and contracting a lifting hydraulic cylinder (not shown). By changing the height relative to the front wheel shaft 57 that supports the front wheel shaft 57, the attitude of the vehicle body in the pitch direction can be adjusted.

9(a) is a schematic front view of the vicinity of the left front wheel 13, and FIG. 9(b) is a schematic partial cross-section of the connecting portion between the front wheel frame 61 attached to the front wheel 13 and the front wheel shaft 57. FIG. 9(c) is a left side view, and FIG. 9(c) is a schematic plan view of the connecting portion shown in FIG. 9(b).

The left front wheel 13 is rotatably fixed to the front wheel frame 61. As shown in FIG. 9A, the front wheel frame 61 has an L-shape having a portion extending in the vertical direction and a portion slightly extending from the lower end of this portion toward the front wheel 13.

A front wheel shaft 57 that supports the front wheel 13 extends outward from the center of the vehicle body 2 in the width direction, and is connected to the front wheel frame 61 . The front wheel shaft 57 is attached to the traveling vehicle body 2.

A hollow connection case 82 is attached to the left end of the front wheel shaft 57, and insertion holes 84, 85 are formed in the front and rear surfaces of the connection case 82, and insertion holes 84 and 85 are formed in the front and rear surfaces, and holes are formed in the top and bottom surfaces of the connection case 82. , a frame hole 86 into which the front wheel frame 61 is inserted is formed.

A plurality of insertion holes 83 are formed in the front wheel frame 61 and penetrate in the front-rear direction. With one of the insertion holes 83 and the insertion holes 84 and 85 formed in the connection case 82 overlapping, the pin 87 is inserted into the insertion holes 83 to 85 from either the front or the rear, and the end of the pin 87 is By attaching the R pin 88, the vertical position of the front wheel 13 with respect to the aircraft body is fixed.

A plate member 99 and a pair of upper and lower bearings 98 rotatably attached to the front wheel frame 61 side surface of the plate member 99 are provided at the front and rear parts of the interior of the connection case 82, respectively. The member 99 is fixed to a spring 100 extending from the inner surface of the connecting case 82 in the front-rear direction.

Here, the bearing 98 is configured to have a larger diameter than the insertion hole 83 formed in the front wheel frame 61. Therefore, when the front wheel frame 61 is slid up and down with the pin 87 removed from the connection case 82, the insertion holes 84 and 85 overlap the insertion holes 83 arranged in the vertical direction, as shown in FIG. 9(b). The bearing 98 fits into the entrance of the insertion hole 83, as shown in FIG. As a result, the vertical position of the front wheel 13 relative to the aircraft body is temporarily fixed at each longitudinal position.

Therefore, the pin 87 can be easily inserted into the insertion holes 83 to 85 without lifting the aircraft using a stand or the like, and the R pin 88 can be attached to the end of the pin 87 to fix the vertical position of the front wheel 13 relative to the aircraft. can do.

In addition, since each bearing 98 in the connection case 82 fits near the entrance of the insertion hole 83 formed in the front wheel frame 61, the front wheel frame 61 is prevented from rotating in the yaw direction.

Furthermore, since the hole into which the bearing 98 fits and the hole into which the pin 87 is inserted are shared, the number of holes formed in the front wheel frame 61 can be reduced, making it easier to manufacture the front wheel frame 61. It becomes possible.

Further, since the insertion hole 83 into which the pin 87 is inserted extends in the front-rear direction of the fuselage, there is no interference when narrowing the front wheel 13.

Further, in this embodiment, a shallow groove extending in the vertical direction is formed between each of the insertion holes 83 arranged in the vertical direction so as to connect the insertion holes 83.

Therefore, when the front wheel frame 61 is slid up and down with the pin 87 removed from the connection case 82, the contact area between each bearing 98 and the front wheel frame 61 increases, causing the bearings 98 and the front wheel frame 61 to wear out. It's getting difficult.

Furthermore, since the bearing 98 is rotatably attached to the plate member 99, the front wheel frame 61 can be slid up and down with light force, and there is no stress on the base of the bearing 98, improving the durability of the bearing 98. do.

The mechanism for adjusting the vertical position of the left front wheel 13 has been described above, but in this embodiment, the mechanism for adjusting the vertical position of the right front wheel 13 is also configured in the same manner as in the case of the left front wheel 13. Similarly, the vertical position can be changed.

On the other hand, FIG. 10 is a schematic left side view showing the vicinity of the ridge end detection sensor 30 of the transplanting machine 1 shown in FIG.

The ridge end detection sensor 30 shown in FIG. 103, a sensor arm 104 rotatably attached to the ridge end sensor stay 102 via a plate 31, and a ridge surface ground roller 32 attached to the rear of the sensor arm 104. The sensor switch 103 includes a switch, which is also a metal terminal, which is pushed up to a predetermined position or higher by contact with the plate 31 and becomes energized when the ridged surface ground roller 32 is in a grounded state and the sensor arm 104 is rotated upward. An arm 103a is provided.

The ridge surface ground roller 32 comes into contact with the ridge surface of the field due to its own weight, and when the traveling vehicle body 2 reaches the end of the ridge, the ridge surface ground roller 32 lowers and the sensor arm 104 rotates backward. move. At this time, the plate 31 separates from the switch arm 103a of the sensor switch 103, and the switch arm 103a separates from the sensor switch 103, resulting in a non-energized state, that is, an off state. It is configured to apply a signal and sound a buzzer to warn the operator.

In the conventional configuration, there is a space below the mounting part of the sensor switch 103 of the ridge end sensor stay 102, so if there is a clod of soil on the ridge surface when the vehicle height of the traveling vehicle body 2 is lowered, the soil will be removed from below. enters, the switch arm 103a remains pushed up toward the sensor switch 103, reaches the edge of the ridge, the ridge surface grounding roller 32 becomes non-grounded, and even if the sensor arm 104 rotates downward. There was a problem that the sensor switch 103 did not turn off and the buzzer did not sound.

In order to prevent the above problem, a bent part 102a is formed on the front side of the ridge end sensor stay 102, which is bent toward the rear of the machine, and this bent part 102a reduces the vehicle height while driving. When lowering, even if there is a clod of soil below the sensor stay 102 at the end of the ridge, it is evened out by the bent portion 102a, so that soil can be prevented from entering toward the sensor switch 103.

This prevents situations such as a malfunction in the electrical resistance of the sensor switch 103 or deformation of the switch arm 103a that makes it impossible to switch between energization and de-energization, and prevents the ridge end detection sensor 30 from operating normally. It is possible to prevent this from happening.
<Technical significance of this embodiment>
According to the present embodiment shown in FIGS. 1 to 10, the conveyance device 6 and the planting device 3 are arranged approximately at the center in the width direction of the machine body, and are arranged from the conveyance device 6 to the rear where the planting device 3 is arranged. Since the transplanter 1 is configured to transport the plants P in a straight line, the transplanter 1 can be configured simply.

Furthermore, according to the present embodiment, since the conveying device 6 is configured to convey the plants P to the planting device 3 by one pitch, which is the input interval of the plants P, the plants P can be reliably planted. It can be supplied to the attachment device 3.

Furthermore, according to the present embodiment, the front end of the transport device 6, which is unsuitable for inputting the plants P, is arranged under the work seat 18, so that the longitudinal length of the machine body can be made compact. I can do it.

Furthermore, according to the present embodiment, the height of the machine body 1 can be suppressed because the conveyance device 6 is disposed above the floor step 37 and below the lower surface 18a of the work seat 18. In addition, when the operator moves in the width direction of the machine, the operator can easily straddle the transport device 6 and move.

Further, according to the present embodiment, the guide member 38 that guides the plants P into the planting hopper 62 has a shape in which the portion that overlaps with the rear end of the conveyance device 6 is cut out, and at least Since a part of the plant P is located below the rear end of the transport device 6, even if the plants P do not fly to the guide member 38 and fall immediately below from the rear end of the transport device 6, the plants P can be sent directly into the planting hopper 62.

In addition, according to the present embodiment, the conveyance device 6 moves the input section A to 1 at the timing when the planting hopper 62 reaches the vicinity of the top dead center (more specifically, a position slightly below the top dead center). Since it is configured to operate by the pitch, the planting material P can be reliably supplied into the planting hopper 62.

Furthermore, according to the present embodiment, the ultrasonic sensor 78 detects that the plants P are stored in the planting hopper 62, and the traveling vehicle body 2 is activated during a series of planting operations (more specifically, Since the planting device 3 is configured to start a series of planting operations when it is detected that the planting device 3 has traveled a predetermined distance or more from the start of the planting operation, the distance between the plants P can be kept constant. can do.

Further, according to the present embodiment, it is not detected that the plants P are stored in the planting hopper 62, and the traveling vehicle body 2 is not detected to have traveled a predetermined distance or more since the previous series of planting operations. When detected, a series of planting operations are performed after the running of the traveling vehicle body 2 is stopped, and then, when it is detected that the plants P are stored in the planting hopper 62, a series of planting operations are performed. Since the vehicle body 2 is configured to resume running after the planting operation is performed, even if the planting material P is not put into one of the feeding parts A due to a feeding error, the planting can still be carried out. There are no unplanted areas in the field, and planting can be carried out reliably at a certain spacing.

In addition, according to the present embodiment, the compaction wheel 90 that compacts the soil in the field is used as a travel distance sensor, so the number of parts of the transplanter 1 can be reduced.

Furthermore, according to the present embodiment, as shown in FIG. 1, the suppression wheel 90 is provided with protrusions on the outer peripheral edge, so that it can be prevented from slipping while rolling on the field, and therefore the control The device 75 is capable of calculating accurate mileage.

FIG. 11(a) is a schematic left side view of a connecting portion between the front wheel frame 61 attached to the left front wheel 13 and the front wheel shaft 57 according to another preferred embodiment of the present invention, and FIG. 11(b) 11(a) is a schematic plan view of the connecting portion shown in FIG. 11(a).

Note that the embodiment shown in FIG. 11 and FIG. 12, which will be described in detail later, has the same configuration as the embodiment shown in FIG. 1 except for the points described below, and therefore has similar effects. Obtainable.

In this embodiment, unlike the embodiments shown in FIGS. 9(a) to 9(c), a large number of recesses 101 into which bearings 98 fit are provided with pins 87 on the front and rear surfaces of the front wheel frame 61. It is formed separately from the insertion hole 83 into which it is inserted. A large number of depressions 101 are formed so as to be lined up in the vertical direction, and shallow grooves extending in the vertical direction are formed so as to connect the depressions 101 with each other.

Further, insertion holes 84 and 85 formed in the connection case 82 are located on the left and right sides of the front wheel frame 61, and the pin 87 is inserted from the left side of the connection case 82.

In this way, by forming the insertion holes 83 and the depressions 101 in the front wheel frame 61 with phases different by 90 degrees, the length of the pins 87 inserted into the insertion holes 83 to 85 can be increased compared to the case of the embodiment described above. It can be made short and short. In addition, when the front wheel 13 is retracted, the spring 100 and the like do not interfere with each other again, resulting in good workability.

The mechanism for adjusting the vertical position of the left front wheel 13 has been described above, but similarly to the embodiment described above, the mechanism for adjusting the vertical position of the right front wheel 13 is similarly configured. You can change the vertical position in the same way.

FIG. 12 is a schematic left side view of the ridge end detection sensor 30 according to the embodiment shown in FIG.

In this embodiment, the sensor switch 103 is placed horizontally to the ground so as to face downward, and a pin 69 for turning on and off the sensor switch 103 is welded to the plate 31.

When the sensor arm 104 is pushed by a clod of soil on the ridge surface and rotates backward, the pin 69 is rotated backward. This prevents the sensor arm 104 from being damaged, and the sensor switch 103 Since the sensor switch 103 is configured to be rotated by the ridge, the sensor switch 103 can be placed at a position significantly higher than the bottom surface of the sensor stay 102 at the end of the ridge, and the sensor switch 103 is protected from the clods on the ridge surface. be able to.

FIG. 13 is a modification of the embodiment shown in FIG. 10, in which the bending portion 102a is not formed at the lower part of the ridge end sensor stay 102, and a guard is provided on one left and right side of the fuselage body of the ridge end sensor stay 102. A plate 106 is attached to the lower part of the vertically long guard plate 106 that protrudes downward from the lower end of the ridge end sensor stay 102. The guard bent portion 106a is formed so as to face in the direction.

As a result, the lower part of the sensor switch 103 can be covered for a long time in the left and right direction, so even if there is a clod of earth under the sensor stay 102 at the end of the ridge, it is possible to prevent the sensor switch 103 from malfunctioning or malfunctioning. Ru.

In addition, the ridge end sensor stay 102 is formed with a pair of upper and lower mounting elongated holes 102b, 102b for mounting the guard plate 106, so that the guard plate 106 can be placed not only in a position parallel to the horizontal ground but also in a horizontal position. It can be worn while leaning forward or backward relative to the ground.

As a result, by changing the posture in which the guard plate 106 is attached in a sloped field such as a mountainous area, it is possible to narrow the gap between the guard bending part 106a and the ridge end sensor stay 102 through which a clod of soil can enter. Therefore, the sensor switch 103 is prevented from malfunctioning or malfunctioning.

Further, mounting holes 106b, 106b for the sensor switch 103 are formed in the guard plate 106, and the sensor switch 103 is mounted from one side of the left and right sides of the aircraft body.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the invention described in the claims, and these are also included within the scope of the present invention. Needless to say.

For example, in each of the embodiments shown in FIGS. 1 to 13, the conveyance device 6 is configured to convey the plants P toward the planting device 3 arranged at the rear, but the work seat may be arranged so as to face forward, and the plants may be transported toward a planting device arranged in front of the transport device.

Furthermore, in each of the embodiments shown in FIGS. 1 to 13, the planting hopper 62 is arranged at a position that partially overlaps the rear end of the conveyance device 6 when viewed from above, but the entire planting hopper is It may be configured to be located below the conveyance device.

In addition, in each of the embodiments shown in FIGS. 1 to 13, as shown in step s11 in FIG. is configured to perform the planting operation of the planting device 3, but if the planting material is not stored in the planting hopper, the drive of the lifting motor 56 is stopped and the operation of the planting device is stopped. It may also be configured to do so.

Furthermore, in the embodiment shown in FIGS. 11(a) and 11(b), each bearing 98 is rotatably attached to a plate member 99, but instead of the bearing, a spherical member is attached to the plate member 99. It may be attached by welding. In this case, the mechanism for adjusting the vertical position of the front wheel can be manufactured at a lower cost, and the pressure applied to the spherical member becomes approximately equal.

1 Transplanter 2 Traveling vehicle body 3 Planting device 6 Transport device 9 Engine 10 Mission case 11 Operation panel 12 Operating handle 13 Front wheel 14 Rear wheel 15 Rear wheel axle 16 Traveling transmission case 18 Work seat 19 Lifting link mechanism 20 Motor case 21 Planting Operation unit 23 Handle frame 27 Main gear shift lever 28 Lifting hydraulic cylinder 29 Arm 30 Ridge end detection sensor 31 Plate 32 Ridge surface grounding roller 33 Link mechanism 34 Spring 35 Cam 36 Cable 37 Floor step 38 Guide member 39 Drive pulley 40 Driven pulley 41 Hopper lifting motor 42 Ridge sensor 43 Front frame 44 Rear frame 45 Endless belt 46 Hopper opening/closing cam 47 Upper link arm 48 Lower link arm 49 Tension pulley 50 Lifting cam 51 Lifting drive shaft 52 Lifting crank 53 Connection plate 54 Adjustment plate 55 Link holder 56 Conveyance motor 57 Front wheel shaft 58 Hopper holder 60 Hopper structure 61 Front wheel frame 62 Planting hopper 63 Opening/closing wire 64 Opening/closing arm 65 Contact roller 66 Rotating shaft 67 Rotating arm 68 Rotating plate 69 Pin 70 Lower Rotation fulcrum of side link arm 71 Shutter opening/closing arm 72 Convex portion 73 Shutter opening/closing cable 74 Small diameter portion 75 Control device 76 Control section 77 Link sensor 78 Ultrasonic sensor 79 Processing section 80 Storage section 82 Connection case 83 Insertion hole 84 Insertion hole 85 Insertion hole 86 Frame hole 87 Pin 88 R pin 89 Angle adjustment mechanism 90 Suppression wheel 91 Suppression arm 92 Avoidance portion 93 Suppression wheel frame 94 Clutch motor 95 Piezoelectric diaphragm 96 Suppression wheel rotation sensor 97 Rotating arm 98 Bearing 99 Plate member 100 Spring 101 Hollow 102 Ridge end sensor stay 103 Sensor switch 104 Sensor arm 105 Mounting table

Claims (6)

A single row planting machine for planting plants in a field,
A traveling vehicle body that runs in a field,
a conveyance device that is attached to the traveling vehicle body and conveys the plants in the front-back direction;
a planting device that is disposed on the downstream side of the conveyance device in the conveyance direction and receives the plants conveyed by the conveyance device and plants them in the field;
The conveyance device and the planting device are arranged approximately in the center in the width direction of the machine,
The conveyance device includes a plurality of input parts into which plants are inputted by an operator and lined up at a constant pitch along the conveyance direction of the conveyance device, and each time the planting device performs a series of planting operations, , a transplanter characterized in that the plants introduced into each input section are conveyed one pitch at a time. The traveling vehicle body includes a floor step on which a worker rides,
The conveyance device is arranged in a height range above the floor step and below the lower surface of the seat on which the worker is seated,
The seat is located approximately at the center in the width direction of the aircraft,
The transplanter according to claim 1, wherein a front end of the conveying device is located further forward than a rear end of the seat. The planting device includes a planting hopper that plants the plants in the field, and a guide member that receives the plants transported by the transport device and guides them to the planting hopper,
In a state where the planting hopper is located at the top dead center, the planting operation is configured such that at least a portion of the planting hopper is located below the rear end of the conveying device,
3. The transplantation machine according to claim 1, wherein the guide member is formed in a substantially C-shape so that a portion overlapping with a rear end portion of the conveying device is cut out in a plan view. Claims 1 to 3, wherein the conveyance device is configured to move the input section by one pitch at a timing when the planting hopper reaches near the top dead center in a series of planting operations. The transplanter according to any one of the above. comprising a mileage sensor that detects the mileage of the traveling vehicle body, and a detection means that detects that the planting material is stored in the planting hopper,
When it is detected that the planting material is stored in the planting hopper and that the traveling vehicle body has traveled a predetermined distance or more since the previous series of planting operations, a series of planting operations is performed. The operation starts,
If it is not detected that plants have been stored in the planting hopper and it is detected that the traveling vehicle body has traveled a predetermined distance or more since the previous series of planting operations, the traveling vehicle body After the traveling of the plant is stopped, a series of planting operations are performed, and then the conveyance device moves the input section by one pitch, and it is detected that the plants are stored in the planting hopper. 5. The transplanting machine according to claim 1, wherein the traveling vehicle body resumes running after a series of planting operations are performed. As the travel distance sensor, a compacting wheel is provided that compacts the soil while rolling over a field where plants are planted,
The suppression ring is provided with a protrusion on the outer peripheral edge,
6. The transplanting machine according to claim 5, wherein the travel distance of the traveling vehicle body is calculated based on the rotation speed of the suppression wheel.