CN213152889U - Transplanting machine - Google Patents

Abstract

A transplanter is provided, wherein a worker can easily view a landscape in the traveling direction reflected by a reflector, and the landscape does not protrude from the upper, lower, left and right sides of a body during non-operation. The transplanting machine is provided with inserting hoppers (20a, 20b), a working seat (46) for a worker to board, and a control handle (404) for operating the traveling vehicle body, wherein the working seat (46) is configured to enable the worker to board to face a direction opposite to the traveling direction of the traveling vehicle body, a visual device (157) is arranged on the control handle (404), the visual device (157) can enable the worker to board the working seat (46) to visually see the view of the traveling direction side of the traveling vehicle body, and the visual device (157) is freely adjusted in the vertical position.

Description

Transplanting machine

Technical Field

The utility model relates to a transplanter for vegetable seedlings such as onions or lettuce.

Background

Conventionally, there have been known seedling transplanters which include: the operator sits on a work seat facing away from the traveling direction of the machine body, puts seedlings into a seedling supply device provided on the rear side of the machine body in the traveling direction, and transplants the seedlings by a seedling transplanting device, and the transplanter can perform planting in two rows on the left and right (patent document 1).

The seedling supply device of the transplanter is provided with a reflector so that an operator of the operation seat can confirm the state of the machine body in the advancing direction without turning back. Thus, the operator can concentrate on the seedling throwing operation.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-99421

However, in the transplanting machine of patent document 1, although the angle of the mirror can be changed to some extent, it is difficult to change the angle of the support of the mirror, and the traveling direction is not sufficiently reflected in the mirror depending on the working environment, and the operator needs to check back.

Therefore, the operator cannot put the seedlings into the seedling supply device at an appropriate timing, and there is a problem that so-called plant shortage occurs in which the seedlings are not planted in the seedling planting device.

In the location where the plant is lost, the operator needs to manually plant the seedling, which causes a problem of consuming additional work time and labor.

Further, since the support of the reflector projects upward from the seedling feeder, the reflector may come into contact with the surroundings and change the angle or be damaged when the transplanter is stored in a warehouse or when the transplanter is moved outside the field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses consider current topic, its aim at provides following transplanter: the operator can easily view the scenery in the traveling direction reflected by the mirror, and does not protrude from the upper and lower sides and the left and right sides of the machine body during non-operation.

In order to solve the above problems, the following technical means are adopted.

That is, a first aspect of the present invention is a transplanter including a traveling vehicle body having insertion hoppers 20a and 20b, a work seat 46 on which a worker rides, and a handle 404 for operating the traveling vehicle body, wherein the work seat 46 is disposed so that the riding worker faces a direction opposite to a traveling direction of the traveling vehicle body, the handle 404 is provided with a visual device 157, the visual device 157 allows the worker riding on the work seat 46 to visually recognize a scene on the traveling direction side of the traveling vehicle body, and the visual device 157 is vertically adjustable.

A second aspect of the present invention is the first aspect of the present invention, wherein a seedling feeder 43 for feeding and transporting the fed seedlings is disposed in front of the body of the transplanting hoppers 20a and 20b, the seedling feeder 43 and the handle 404 are connected by a reinforcing frame 152, a rotation support plate 153 is provided in the reinforcing frame 152, the visual device 157 is rotatably attached to the rotation support plate 153, the rotation support plate 153 is disposed in a posture protruding from the reinforcing frame 152 to one side of the left and right sides of the body or the other side of the left and right sides, and the visual device 157 is composed of a visual rotation arm 154 whose base is attached to the rotation support plate 153 and a visual part 155 which is rotatably attached to the end of the visual rotation arm 154.

The third aspect of the present invention is the second aspect of the present invention, wherein the transplanting machine is provided with an up-and-down moving mechanism 21 for moving up and down the transplanting hoppers 20a and 20b, the rotation support plate 153 is formed with a rotation restricting portion 153a, and the rotation restricting portion 153a restricts the visual device 157 to rotate downward, and the rotation restricting portion 153a is configured to be located at a position above the machine body more than a position at which the up-and-down moving mechanism 21 rotates upward most.

Effect of the utility model

According to the first aspect of the present invention, by providing the visual device 157, the worker does not need to perform the turn-around operation when confirming the view in the traveling direction of the traveling vehicle body, and therefore, the labor of the worker is reduced.

Further, since the supply of the seedlings can be prevented from being delayed, the seedlings can be reliably supplied to the transplanting hoppers 20a and 20b, and the occurrence of plant shortage can be prevented.

Further, the vertical position of the viewing device 157 can be adjusted, and thus the viewing device 157 can be disposed at a position that is easily viewed according to the physique of the operator.

According to the second aspect of the present invention, the seedling supply device 43 and the manipulating handle 404 are connected by the reinforcing frame 152 on the basis of the effect of the first aspect of the present invention, and thus, the swinging of the seedling supply device 43 or the manipulating handle 404 in the front-rear direction due to the vibration of the machine body or the like can be suppressed, and therefore, the strength of the machine body is improved. Further, since vibration of the visual device 157 can be suppressed, the operator can easily grasp the view in the traveling direction of the traveling vehicle body.

Further, by projecting the pivoting support plate 153 from the reinforcing frame 152 toward one of the left and right sides of the machine body, the viewing device 157 is converged within the left and right width of the machine body when the viewing device 157 is pivoted in the direction opposite to the projecting direction during storage or the like, thereby saving space in the storage location.

Further, since the visual member 155 is rotatably attached to the end of the visual rotating arm 154, it can be disposed in a posture that is more easily visible to the operator, and therefore, the view in the traveling direction of the traveling vehicle body can be easily confirmed.

According to a third aspect of the present invention, in addition to the effect of the first or second aspect of the present invention, the rotation restricting portion 153a restricts the rotation of the rotation support plate 153 beyond a predetermined position, thereby preventing the contact of the visual device 157 with the vertical movement mechanism 21 when the visual device 157 is not used for work, and preventing the damage of the visual device 157.

Alternatively, the visual device 157 restricts upward rotation of the vertical movement mechanism 21.

Drawings

Fig. 1 is a left side view of the transplanter.

Fig. 2 is a right side view of the transplanter.

Fig. 3 is a rear view of the transplanter.

Fig. 4 is a front view of the transplanter.

Fig. 5 is a top view of the transplanter.

Fig. 6 is a plan view showing a main part of the periphery of the bumper on the front side of the body.

Fig. 7 is a main portion side view showing the periphery of the bumper on the front side of the body.

Fig. 8 is a main part perspective view showing the periphery of the bumper on the front side of the body.

Fig. 9 is a side view showing the elevating mechanism and the inter-row adjusting mechanism of the right and left transplanting hoppers.

Fig. 10 is a plan view showing the elevating mechanism and the inter-row adjusting mechanism of the right and left implant hoppers.

Fig. 11 is a rear view showing the elevating mechanism and the inter-row adjusting mechanism of the right and left transplanting hoppers.

Fig. 12 is a perspective view showing the elevating mechanism and the inter-row adjusting mechanism of the right and left insertion hoppers.

Fig. 13 is a rear view showing a main part of the opening and closing mechanism of the plant hopper.

Fig. 14 is a main part perspective view showing the manipulation part, the transplanting hopper, the seedling supply device, etc. at the rear of the machine body.

Fig. 15 is a main part perspective view showing the transplanter of the 1 st ridge end sensor, boarding steps, and the like.

Fig. 16 is a block diagram showing an operation member corresponding to various sensors.

Fig. 17 is a flowchart showing that the transmission is stopped when the excessive inclination sensor is in the detection state when the operator boards the vehicle.

Fig. 18 is a flowchart showing that the transmission is stopped when any one of the left and right excessive inclination sensors is in a detection state when the operator boards the vehicle.

Fig. 19 is a flowchart showing that the excessive inclination sensor is in a detection state during the transplanting operation traveling on the ridge and the transmission is stopped when the operator rides the ridge.

Fig. 20 is a right side view of the transplanter with the 2 nd ridge end sensor.

Fig. 21 is a flowchart showing that the transmission is stopped when the 1 st and 2 nd ridge end sensors detect that the ridge end is reached.

Fig. 22 is a flowchart showing that the transmission is stopped when the ridge surface sensor is separated from the ridge at the ridge end and the vehicle height is lowered and the excessive inclination sensor is in a detection state.

Fig. 23 is a flowchart showing that the ridge surface sensor is separated from the ridge at the ridge end, the vehicle height is lowered, the excessive inclination sensor is in a detection state, and the transmission is stopped when the 1 st ridge end sensor and the 2 nd ridge end sensor detect that the ridge end is reached.

Description of the reference symbols

20a inserting and planting hopper

20b inserting and planting hopper

21 vertical moving mechanism

43 seedling supply device

46 work seat

152 reinforcing frame

153 rotating support plate

153a rotation restricting part

154 visual rotating arm

155 visual element

157 visual device

404 operating handle

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the following description, the side where the handle 404 is disposed is referred to as the rear side, and the side where the engine 41 is disposed is referred to as the front side. The right-hand side is set to the right and the left-hand side is set to the left toward the front side of the machine body.

As shown in fig. 1 to 5, a transplantation machine 10 of the present application includes: a running vehicle body; a control handle 404 for walking control provided at the rear part of the traveling vehicle body; a planting device for planting seedlings in a field; and a seedling supply device 43 for supplying seedlings to the transplanting device.

The traveling vehicle body is provided with a transmission case 39 at a front portion of the body, and an engine 41 as a driving device is provided on a front side of the transmission case 39. An axle cover 101 is connected to the lower portion of the rear side of the body on both the left and right sides of the transmission case 39, the axle cover 101 covers an axle that can adjust the track width to change the left and right positions of the running wheels 44, a running gear box 38 is vertically rotatably attached to each of the outer ends of the body of the axle cover 101, and the running gear box 38 transmits the driving force to the running wheels 44 provided on the rear side of the body.

More precisely, it is constituted: the left and right axle covers 101 are attached to be rotatable about an inner axle (not shown) as a fulcrum, the travel transmission case 38 is attached to each of these axle covers 101, and the travel transmission case 38 is rotated up and down by rotating the axle cover 101 by extending and contracting a lift cylinder 300 or a swing cylinder, which will be described later.

As shown in fig. 1 to 5 and 14, the transmission case 26 is branched to supply the driving force to the transplanting device and the seedling supply device 43 by transmitting the power from the transmission case 39, a base plate 400 is provided on the transmission case 26, the base plate 400 covers at least right and left side surfaces and a back surface of the transmission case 26, and a frame stay 401 is detachably provided on a rear portion of the base plate 400. Further, a handle frame 402 protruding in a shape drawing an arc toward the upper rear side of the machine body is provided to the frame stay 401, and an operation unit 403 and an operation handle 404 are provided to the rear part of the handle frame 402, and the operation unit 403 operates vertical adjustment of the vehicle height, connection/disconnection of transmission of running and transplanting work, and holds the operation handle 404 when an operator operates the machine body such as when not moving a seedling. The steering handle 404 has a shape that curves toward the left and right of the body about the handle frame 402 and toward the rear of the body, and side clutch operating levers 405 that connect and disconnect the transmission to the traveling wheels 44 are provided on the left and right rear sides, respectively. Further, a 1 st throttle lever 406 that increases or decreases the output of the engine 41 is provided on either the left or right side of the joystick 404.

Further, a manipulation panel 47a is provided between the left and right sides of the handle 404, and: a vehicle height adjusting lever 123 for adjusting the height of the traveling vehicle body by extending and contracting the lift cylinder 300; a main clutch lever 125 that connects/disconnects transmission of driving force to the left and right travel transmission cases 38 and 26; a 1 st engine switch 407 that switches whether or not the engine 41 can be started and performs a stop operation; and a main shift lever 150 that switches the travel transmission of the traveling vehicle body to any one of a traveling speed, an insertion operation speed, a traveling neutral position, and a reverse position.

When starting the engine 41, the operator operates the 1 st engine switch 407 to the on position. When the 1 st engine switch 407 is lightly pressed to stop the engine 41, the switch is turned to the off position by the force of a built-in torsion spring (not shown), and the engine 41 is stopped.

In the off operation, the 1 st engine switch 407 is lightly pressed, and thus, the travel and the transplanting can be immediately stopped. Therefore, when reaching the ridge end, the running and the transplanting are immediately stopped, thereby preventing the transplanting action of the seedlings at the positions which are not on the ridge and reducing the extra consumed seedlings. In addition, when the machine body is moved to the ridge for the next transplanting operation, no additional movement is generated, thereby reducing fuel consumption and operation time.

A seedling supply device 43 is provided on the upper portion of the transmission case 26 in front of the machine body of the manipulating handle 404, and the seedling supply device 43 transfers the seedlings thrown in by the operator to the left and right transplanting hoppers 20a, 20 b. A reinforcing frame 152 in the front-rear direction is provided across the rear portion of the seedling feeding device 43 and a reinforcing coupling stay 151, the reinforcing coupling stay 151 is provided at an upper portion of the rear side of the handle frame 402 and at the front side of the manipulation panel 47a, and the reinforcing frame 152 improves the strength of the vicinity of the manipulation handle 404 and the seedling feeding device 43 and reduces vibration.

Further, between the front and rear of the reinforcing frame 152, a pivot support plate 153 having an L-shape in a side view is attached in a posture projecting toward the other side of the left and right sides of the machine body (right side of the machine body) in a side view. The other side of the body of the pivot support plate 153 is open, and the base of the pivot arm 154 is rotatably attached to the open side. Further, it is visually confirmed that the pivoting arm 154 can pivot to a position where it contacts the handle frame 402 on one side of the left and right sides of the body (left side of the body) and to a position where it contacts the pivoting support plate 153 on the other side of the left and right sides of the body. In other words, when the visual confirmation rotating arm 154 is rotated in the other left-right direction of the machine body, the rotation of the visual confirmation rotating arm 154 is restricted by the rotation restricting portion 153a located on the lower side of the machine body at a position where the seedling supplying device 43 and the visual confirmation rotating arm 154 are substantially parallel or in a downwardly inclined posture toward the outer side of the machine body.

Further, the vertically moving mechanism 21 on the other left and right sides for lifting and lowering the insertion hopper 20b on the other left and right sides of the machine body is disposed so as to be vertically rotatable below the portion where the visual confirmation rotation arm 154 is provided, but the visual confirmation rotation arm 154 rotated to the other left and right sides of the machine body until it comes into contact with the rotation restricting portion 153a is configured to be positioned above the machine body with respect to the vertically moving mechanism 21 rotated upward to the maximum.

A visual confirmation member 155 is provided at an end portion side of the visual confirmation rotating arm 154 so as to be rotatable, the visual confirmation member 155 is reflected in a view on the front side of the body in the traveling direction of the traveling vehicle body, and is provided for visual confirmation by an operator riding on the work seat 46 and the floor pedal 122 in a direction opposite to the traveling direction of the traveling vehicle body, the visual confirmation member 155 has a spherical coupling body (not shown) on the rear side of the body, and the spherical coupling body is screwed into a coupling hole (not shown) on the visual confirmation rotating arm 154 side, and is configured to be rotatable and angle-adjustable.

When the visual confirmation member 155 is formed as the mirror 155a, the scene on the front side of the machine body can be viewed only by assembling, and therefore, the increase in cost due to the assembling is suppressed. In order to prevent the mirror from being difficult to observe due to reflection of sunlight or the like, a light shield (not shown) or the like may be attached to the upper side of the reflector 155 a. This constitutes the visual checking device 157.

In the above configuration, since the visual confirmation turning arm 154 can be turned in an arc shape in the left-right direction of the machine body about the turning axis in the front-rear direction, and the left-right position and the up-down height of the visual confirmation member 155 can be changed, it is possible to easily observe the view in front of the machine body projected on the visual confirmation member 155 in accordance with the work posture of the operator, for example, whether the operator is performing work while sitting on the work seat 46 or performing work while standing on the floor pedal 122, and the physique of the operator. Thus, the operator can reliably find the end of the ridge and the presence or absence of an obstacle on the traveling road near the end of the planting operation of the seedlings, and therefore, the seedlings are prevented from being planted in the areas other than the ridge in vain, or the traveling vehicle body is prevented from being damaged by contact with the obstacle.

Further, although the operator needs to load the seedlings into the seedling supply device 43 disposed on the rear side of the machine body with the traveling direction facing away from the machine body, the operator does not need to face the rear side in order to observe the state of the front side of the machine body, and therefore, the interruption of the supply of the seedlings and the occurrence of so-called plant shortage in which the seedlings are not planted in the field by the planting hoppers 20a and 20b are prevented.

Therefore, it is not necessary to plant seedlings by manual operation at the plant-lacking site, and the labor of the operator is reduced.

Further, when the visual confirmation pivoting arm 154 is pivoted toward the left and right sides of the body at the time of storage or the like, the visual confirmation pivoting arm 154 is configured to be positioned inside the body more than the left and right side end portions of the body and to be converged within the left and right width of the body, and therefore, the visual confirmation device 157 is prevented from being hooked and damaged at the storage location.

Even if the visual rotary arm 154 is rotated to the maximum extent toward the other left and right side rotation restricting portions 153a of the machine body during non-use or the like, the visual rotary arm 154 is positioned at an upper position where it does not interfere with the vertical movement mechanism 21, and therefore, the visual rotary arm 154 is prevented from contacting the vertical movement mechanism 21 and being damaged.

Further, since the base side of the visual confirmation device 157 is provided between the front and rear of the reinforcing frame 152, vibrations of the machine body are not easily transmitted to the visual confirmation device 157, and the scene reflected on the visual confirmation member 155 is easily visually confirmed.

In addition, the handle frame 402 and the seedling supply device 43 are connected by the reinforcing frame 152, thereby achieving an improvement in the strength of the machine body.

Further, it is visually confirmed that the double nuts are used for attachment of the swing arm 154 to the swing support plate 153, so that the falling-off and the downward swing due to its own weight are prevented, and the swing operation by the operator is performed with a light force.

A shock absorber support frame 108 shaped like コ in a front cross-sectional view is provided on the front side and the right and left sides of the body of the transmission case 39 so as to protrude toward the front side of the body. A damper 109 protruding toward the front side of the machine body is provided in front of the left and right damper support frames 108.

As shown in fig. 6 to 8, the damper 109 is composed of a damper plate 109a formed by bending the front side and both left and right sides of the body of the plate body downward, a front weight 109b attachable to and detachable from the upper surface of the damper plate 109a, and a damper rod 109c extending in the left-right direction from the damper plate 109 a. The front weight 109b is made of a heavy and hard material and is formed in a shape protruding toward the front side of the machine body from the cushion plate 109 a.

Thus, the front weight 109b made of a material having a weight and hardness protrudes most forward of the machine body, and therefore, damage can be prevented from reaching the cushion plate 109a when contacting an obstacle.

Recesses (not shown) having openings on the lower side of the body are formed on the front side and the lower side of the body of the left and right shock absorber support frames 108, and front beam frames 110 having the longitudinal direction of the body in the left-right direction are inserted into these recesses and fixed.

By providing the front beam frame 110, the left and right bumper support frames 108 and the transmission case 39 form a rectangular frame on the front side of the machine body, and therefore, the strength of the front side of the machine body is improved. In particular, when the shock absorber 109 comes into contact with an obstacle, the left and right shock absorber support frames 108 are inserted into and fixed to the front beam frame 110, and therefore, damage and impact are not easily transmitted to the rear portions of the left and right shock absorber support frames 108.

Further, when the transmission case 39 is assembled to the machine body, the left and right positions can be adjusted while fixing the front and rear positions of the transmission case 39 by inserting the concave portions of the left and right bumper support frames 108 into the front beam frame 110 and then moving the same in the left and right directions, and therefore, the assembly work is prevented from being delayed due to the deviation of the mounting position of the transmission case 39.

The rear portion of the engine 41 is mounted on the front and left and right sides of the transmission case 39, and the front portion of the engine 41 is mounted on an engine mount disposed near the left and right center portions of the front beam frame 110, but the shock absorber support frame 108 on the side where the engine 41 is disposed and the engine 41 are disposed at a vertical distance. That is, the damper support frame 108 is not a member that receives the engine 41 from below.

According to the above configuration, since the shock when the shock absorber 109 contacts the obstacle can be prevented from being transmitted from the shock absorber support frame 108 to the engine 41, damage to the engine 41 and malfunction due to the shock can be prevented.

Further, the shock absorber support frame 108 is configured not to affect the mounting state of the engine 41 even if it is deformed by an impact, and is configured to be capable of performing work and movement by the power of the engine 41 even if the shock absorber 109 is damaged.

Pedal support plates 111 are attached to the left and right sides of the cushion plate 109a, and the pedal support plates 111 have left and right recesses to which cushion rods 109c are attached. The left and right pedal support plates 111 are supported via reinforcing arms 112, and the reinforcing arms 112 are provided on the left and right sides of the body rear side of the front frame 110.

The upper surfaces of the left and right pedal support plates 111 are flat, and the front part of the front riding pedal 113 is attached to the left and right sides of the body of the vehicle body (the left side of the body), and the operator steps on the front riding pedal 113 when riding on or off the body from the front. On the other hand, a space adjusting cover 114 is formed on the other side of the right and left sides of the body (right side of the body), and the space adjusting cover 114 supports an inter-plant main shift lever 801 and an inter-plant sub shift lever 802 as a space adjusting means for setting a front-rear space between seedlings planted in the planting hoppers 20a and 20b, that is, so-called inter-plant space, and a planting shift lever 803 for selecting the 1 st planting speed or the 2 nd planting speed when the main shift lever 150 is operated to the planting speed.

The front boarding step 113 includes a lower step portion 113a located on the front side of the machine body and on the lower side in the vertical direction, an upper step portion 113b located on the rear side of the machine body and on the upper side in the vertical direction with respect to the lower step portion 113a, and an intermediate inclined portion 113c located between the lower step portion 113a and the upper step portion 113b and inclined in a twisted manner in the outer direction of the machine body. A plurality of anti-slip protrusions are formed on the surface of the lower step portion 113a, and the intermediate inclined portion 113c is formed to have an inclination angle at which an operator cannot easily step on the lower step portion by the foot psychologically during the ascending and descending, and to have a length in the front-rear direction that the operator passes through when moving between the lower step portion 113a and the upper step portion 113 b.

On the other hand, the interval adjustment cover 114 includes a lower base part 114a positioned on the front side of the machine body and on the lower side in the vertical direction, an upper base part 114b positioned on the rear side of the machine body and on the upper side in the vertical direction with respect to the lower base part 114a, and a rod attachment part 114c positioned between the upper and lower sides of the lower base part 114a and the upper base part 114b, and the rod attachment part 114c is twisted and inclined in the direction of the outer side of the machine body and forms a movement groove for moving the inter-plant main shift lever 801, the inter-plant sub shift lever 802, and the main shift lever 150.

The front riding step 113 and the space adjusting cover 114 are formed in a bilaterally symmetrical shape, and a member provided on one of the left and right sides of the machine body may be the space adjusting cover 114, and a member provided on the other of the left and right sides of the machine body may be the front riding step 113.

Side steps 118 are provided on the rear sides of the upper step portion 113b and the upper table portion 114b, respectively, and the side steps 118 serve as a landing portion for a worker to get on and off the machine from the side of the machine. The side step 118 is configured to form a plurality of spaces by arranging plates vertically and horizontally in a frame, and to drop soil attached to the sole of a worker downward. Further, a center step, which is a foot-engaging portion of the riding operator, is detachably provided between the left and right side steps 118. The floor pedal 122 is constructed as described above.

The front side boarding step 113, the space adjustment cover 114, the left and right side steps 118, and the center step are mounted independently of each other, that is, are not fastened together by one mounting member. Thus, when each pedal structure is removed during local maintenance work, it is not necessary to remove other pedal structures, and the efficiency of the maintenance work is improved.

An ascending/descending assist mechanism 170 is attached to a lower part of the front side boarding pedal 113, and an operator steps on the ascending/descending assist mechanism 170 with his foot when ascending/descending with respect to the front side boarding pedal 113. The boarding/alighting assistance mechanism 170 is constituted by: an outer support arm 171 which is positioned outside the body, has an L-shape in side view, and has a 1 st protruding portion 171a protruding forward of the body below the bent portion; an inner support arm 172 located inside the body, having an L-shape in front view, and having a 2 nd projecting portion 172a projecting outward of the body below the bent portion; and a step-in/step-out assist pedal 173 straddling the 1 st and 2 nd protrusions 171a and 172 a.

The outer support arm 171 is assembled to the running vehicle body by being fastened together with the pedal support plate 111 by the common fastening bolt 174 …. The inner support arm 172 is fastened together with the cushion plate 109a by the common fastening bolt 174 … and is mounted on the running vehicle body.

Thus, since the plurality of members are fastened by the common fastening bolt 174 …, the strength of the traveling vehicle body in the vicinity of the front side of the machine body is improved, and the reduction in durability due to the load when the operator rides in and out is reduced.

Further, by providing the riding-down assist pedal 173, even if the height of the traveling vehicle body is increased in accordance with the height of the ridge or the like, the operator can step on the riding-down assist pedal 173, step on the lower step portion 113a of the front riding pedal 113 to take the vehicle, and get off the vehicle in the reverse operation, so that the operator does not need to raise his foot or get off the vehicle during riding down, and the burden on the body of the operator is reduced.

Since the descent assist pedal 173 is straddled between the 1 st projection 171a and the 2 nd projection 172a, the outer support arms 171 and the inner support arms 172 are not positioned within the lateral width of the descent assist pedal 173, and therefore, the feet of the operator are prevented from coming into contact with the outer support arms 171 and the inner support arms 172.

On the other hand, when the vehicle height of the traveling vehicle body is lowered or in the transplanting work, the riding and lowering assist mechanism 170 is not required, and depending on the vehicle height, the riding and lowering assist mechanism 170 may contact the ridge surface or the normal surface of the ridge to collapse the ridge, thereby lowering the transplanting accuracy of the seedling.

In order to prevent this, the base portions of the outer support arm 171 and the inner support arm 172 may be fitted with double nuts (not shown), the outer support arm 171 and the inner support arm 172 may be fitted so as to be rotatable about the common fastening bolt 174 … as a rotation fulcrum, and the boarding/alighting assistance mechanism 170 may be configured to be rotatable up and down.

According to the above structure, the riding and landing assisting mechanism 170 can be rotated upward away from the ridge surface when not needed, so that the riding and landing assisting mechanism 170 is prevented from collapsing the ridges, and the transplanting accuracy of the seedlings is maintained.

As shown in fig. 1 to 8, a ridge end sensor stay 182a that supports the 1 st ridge end sensor 182 is provided at the lower portion of the interval adjustment cover 114, and the 1 st ridge end sensor 182 rotates downward by its own weight to contact the ridge surface, and further rotates downward when the traveling vehicle body reaches the end of the ridge without contacting, and operates a notification device that notifies the operator of the arrival at the end of the field. The notification device is a buzzer or a lamp mounted on each part of the traveling vehicle body, or a communication device that notifies an information terminal of an operator.

The 1 st ridge end sensor 182 is configured such that a sensor arm 183 is provided rotatably, a ridge surface contact roller 184 is rotatably attached to a lower portion of the sensor arm 183, a contact biasing spring 185 for biasing the sensor arm 183 downward is provided, and a 1 st ridge end detection switch 186 which is turned on (or off) when the angle is equal to or greater than a predetermined angle is provided at a base portion of the sensor arm 183. The ground contact biasing spring 185 is configured such that an upper end portion thereof is attached to a detection adjustment plate 187 which is adjustable in angle along the elongated hole, and the angle of the ground contact biasing spring can be changed in accordance with the height of the ridge.

The 1 st ridge end sensor 182 is brought into contact with the ridge surface by adjusting the height of the traveling vehicle body at the start of the traveling of the seedling planting work. By bringing the freely rotatable ridge surface contact roller 184 into contact with the ground, the ridge surface is less likely to collapse, and fine irregularities can be flattened, thereby improving the accuracy of transplanting seedlings.

Then, when the traveling vehicle body continues to move forward and reaches the end of the ridge and the ridge surface contact roller 184 does not contact the ridge surface, the sensor arm 183 is rotated downward by the urging force of the contact urging spring 185 and the self weight of the sensor arm 183 and the ridge surface contact roller 184, and the 1 st ridge end detection switch 186 is not pressed. When the 1 st ridge edge detection switch 186 is not pressed, the notification device is energized, and thereby the notification device operates to notify the operator that the vicinity of the body front end of the traveling vehicle body has reached the ridge edge.

Further, since there are several plants of planting spaces left in the ridge at the time when the 1 st ridge end sensor 182 detects the ridge end, the operator puts the seedlings of the number of plants planted in the remaining planting spaces into the seedling supply device 43 and prepares to stop the operation without immediately stopping the machine body.

Therefore, the operator can know the approaching ridge end without turning back, so that the machine body can be stopped at the timing of finishing the transplanting of the seedlings on the ridge, and the fuel consumption caused by extra driving and the moving distance towards the next operation row are prevented from being increased.

Further, since the number of seedlings to be loaded into the seedling supply device 43 can be adjusted when the ridge ends are close, even if the stop operation of the transplanting operation traveling is delayed and the transplanting operation is performed by the transplanting hoppers 20a and 20b, the seedlings are prevented from being released to a portion other than the ridge.

As shown in fig. 4, 6, and 7, the sensor arms 183 may be a pair of left and right sensor arms 183a, and the left and right ridge contact rollers 184 may be rotatably mounted with the left and right ridge contact rollers 184a, respectively, and the left and right 1 st ridge end detection switches 186, respectively, may be provided.

Thus, when any one of the left and right sensor arms 183, 183 is rotated downward and one of the corresponding 1 st ridge end detection switches 186, 186 is not pressed, the notification device is operated, and thus even if the ridge end is disturbed in shape due to wind and rain collapse, the ridge end is easily detected, and the operator can perform the operation of stopping the traveling of the implant work with good timing.

Further, front wheels 45 rotatably supported are provided on both left and right sides of the body front side of the traveling vehicle body and on the body front side of the traveling wheels 44 via a lateral frame 16, and the lateral frame 16 is provided on the lower side of the front beam frame 110 and projects in the body left-right direction.

The distal end of the drive shaft extending from the transmission case 39 to both the left and right outer sides enters the rotation axis center position of the front portion of the traveling transmission case 38, and the power for traveling is transmitted to the transmission mechanism in the traveling transmission case 38 via the traveling portion system transmission portion in the transmission case 39. The power for traveling is transmitted to the traveling axle 12 of the traveling transmission case 38 via a transmission mechanism in the traveling transmission case 38, and the traveling wheels 44 are rotationally driven.

The driving of the left and right running wheels 44 is interrupted by left and right clutches (not shown) provided in the transmission case 39. Therefore, when the machine body is turned, the left and right traveling wheels 44 on the turning inner side are set to the non-driving state by the side clutch and turned.

A vertically-rotating drive unit that vertically rotates the travel wheels 44 about a pivot point on the front side of the travel transmission case 38 is connected to the travel transmission case 38. Specifically, an upwardly extending arm is integrally attached to the traveling transmission case 38 at a portion attached to the transmission case 39, the arm is connected to both right and left sides of a connecting body attached to the end of a piston rod of the lift cylinder 300, and the lift cylinder 300 is fixed to the transmission case 39. The left and right sides are connected by a connecting rod, and the other side (left side) is connected by a left and right horizontal cylinder which can perform telescopic motion corresponding to the inclination of the machine body.

When the lift cylinder 300 is operated to project the piston rod rearward of the machine body, the left and right arms rotate rearward, and the travel transmission case 38 rotates downward in association with this rotation, and the machine body rises. Conversely, when the piston rod of the lift cylinder 300 moves forward in the machine body and retracts into the cylinder, the left and right arms rotate forward, and the travel transmission case 38 rotates upward in association with this, and the machine body descends.

The lifting cylinder 300 is operated by a ridge surface sensor 14, and the ridge surface sensor 14 is in contact with the ridge surface and operates according to the variation of the vertical interval between the machine body and the ridge surface. The operation of the ridge surface sensor 14 is an operation of detecting the height of the upper surface of the ridge with reference to the position of the machine body, and the machine body is set to a set height corresponding to the height of the upper surface of the ridge based on the detection operation of the ridge surface sensor 14, and the elevation cylinder 300 is operated by this configuration.

When the left and right horizontal cylinders extend and contract, the left arm connected to the left and right horizontal cylinders rotates to move only the left travel wheel 44 up and down, thereby tilting the machine body left and right. The left and right horizontal cylinders operate based on the detection result of a sensor for detecting the left and right inclination of the body with the left and right horizontal as a reference, and the body is made horizontal.

The elevation cylinder 300 extends and contracts according to the detection of the ridge sensor 14 or the operation of a vehicle height adjusting rod 123 provided at the rear of the machine body, thereby changing the vehicle height.

The vehicle height adjustment lever 123 has a "high" position for raising the vehicle height on the front side of the machine body, a "low" position for lowering the vehicle height on the rear side of the machine body, and a "fixed" position for maintaining the vehicle height by stopping the extension and retraction of the lift cylinder 300 from the "low" position toward the outside of the machine body.

As shown in fig. 1, 2, and 5, the lateral frame 16 is attached to the front beam frame 110 so as to be swingable around an axial center in the front-rear direction, and vertical frames 17, which are long in the vertical direction, are attached to both left and right sides of the lateral frame 16. The front wheels 45 are rotatably mounted on a front wheel axle 18, and the front wheel axle 18 is fixed to the side of the lower end of the vertical frame 17. Therefore, the right and left front wheels 45 are swingably rotatable about the axis in the front-rear direction at the right and left center of the machine body. The vertical frame 17 is provided to be vertically adjustable with respect to both left and right side portions of the horizontal frame 16, and is configured to be capable of adjusting the height of the front wheel 45.

The operating handle 404 is provided at the rear of the body, and is fitted to the rear side of the body with respect to the running axles 12 of the running wheels 44, i.e., to the rear end portion of the body frame that fixes the front end portion to the transmission case 39. The body frame extends rearward from the left and right center of the body, and extends obliquely rearward and upward from the front and rear intermediate portions.

The handle bar 404 extends rearward from the rear end of the body frame in the right and left directions, and each rear end serves as a grip portion of the handle bar 404.

The insertion device has: a plurality of mouth-shaped inserters, the tail ends of which are downward; a vertical movement mechanism 21 for vertically moving the implant between a position where a lower end portion of the implant is above the field surface and a position where the lower end portion is below the field surface; and an opening/closing mechanism for opening and closing the transplanting device in a closed state in which the lower end portion of the mouth-shaped transplanting device is closed and the transplanting device can receive the seedlings from the upper side and store the seedlings in the inner side and an open state in which the lower end portion of the transplanting device is opened left and right and the seedlings stored in the inner side can be discharged downward.

As shown in fig. 1 to 5, the planting device of the present invention is configured to plant two rows in which two planting hoppers 20a and 20b are arranged side by side on the left and right. The insertion hopper 20a and the insertion hopper 20b are respectively attached to vertical movement mechanisms 21, and the vertical movement mechanisms 21 are provided on both right and left sides of a transmission case 26 to which power is transmitted from a transmission case 39.

As shown in fig. 9 to 13, the vertical movement mechanism 21 is composed of upper and lower link arms 21a, 21b, and the upper and lower link arms 21a, 21b have front end portions attached to the transmission case 26 so as to be vertically rotatable and have rear end portions attached to left and right positions of the left and right link holders 210, 210 so as to be vertically rotatable. The upper link arm 21a is provided at a position spaced apart from the rotational axis of the noncircular cam 211 rotatably attached to the transmission case 26 toward the outer peripheral edge portion side at its distal end portion, and is configured to swing the implant buckets 20a and 20b vertically moved by the vertical movement mechanism 21 from front to back.

The transmission case 26 is fixed to an upper portion of a mounting member that fixes a lower portion to the body frame. In addition, the rear end portions of the insertion hoppers 20a and 20b and the vertical movement mechanism 21 are located on the rear side of the machine body with respect to the rear end portions of the left and right traveling wheels 44 and 44 in a side view, and the outside of the machine body is a space portion where no other component is present.

Specifically, the positions at which the front end portion of the upper link arm 21a is fitted to the noncircular cam 211 are as follows: in the static trajectory of the planting hoppers 20a and 20b, the planting hoppers 20a and 20b are changed from the backward inclined posture to the posture substantially perpendicular to the field surface from the time of receiving the seedlings to the time of moving toward the bottom dead center, and are changed from the vertical posture to the forward inclined posture when the seedlings start to ascend from the bottom dead center.

Accordingly, the time and distance for inserting the seedlings into the ground for planting can be shortened in the dynamic trajectory of the planting hoppers 20a and 20b, and therefore, the size of the planting holes formed in the field by the planting hoppers 20a and 20b is suppressed to be small, and the seedlings are prevented from falling down and the planting posture is prevented from being disturbed.

Further, since the transplanting hoppers 20a and 20b are in a posture of being largely inclined forward near the top dead center, the upper end portions of the transplanting hoppers 20a and 20b can be brought close to the drop-supplying position of the seedling supplying device 43 which transfers the seedlings thrown by the operator to a predetermined position and drops and supplies the seedlings, and therefore, the seedlings are prevented from being supplied into the transplanting hoppers 20a and 20b and being missing.

Further, since the transplanting hoppers 20a and 20b are inclined when the seedlings are dropped and supplied, the seedlings entering the transplanting hoppers 20a and 20b can be slidingly moved from the upper side to the lower side, and therefore, the following is prevented: the seedlings remain in the transplanting hoppers 20a, 20b, and even if the transplanting hoppers 20a, 20b enter the soil, the seedlings are not transplanted and plant shortage occurs.

Further, an adjustment plate 212 is disposed between the non-circular cam 211 and the upper link arm 21a, and a plurality of long adjustment holes 212a … are formed in the adjustment plate 212 in an arc shape, and the front-rear inclination angle of the insertion hoppers 20a, 20b intended by the operator can be adjusted by changing the position of inserting a fixing member such as a bolt into the long adjustment holes 212a ….

Accordingly, the inclination angles of the transplanting hoppers 20a and 20b can be adjusted appropriately in accordance with the working conditions such as the length of the seedling and the transplanting depth, and the seedling can be transplanted in a posture suitable for growth and at a transplanting depth, and the growth of the seedling is good.

The vertical movement driving force of the vertical movement mechanism 21 is transmitted from a vertical movement driving shaft 213 provided on the rear side of the machine body with respect to the rotation shaft of the non-circular cam 211. An elevating cam 214 having an irregular circular shape is attached to the elevating drive shaft 213, and an elevating crank 215 for vertically rotating the upper link arm 21a is provided between the elevating cam 214 and the right and left of the upper link arm 21 a. The lower link arm 21b rotates vertically in conjunction with the vertical rotation of the upper link arm 21a, and the vertical movement mechanism 21 is a parallel link.

The lifting crank 215 has one end fitted to a rotating shaft extending from the lifting cam 214 toward the outside of the machine body and the other end fitted to a coupling plate 216 provided on the inside of the machine body of the upper link arm 21a, so that the locus of the transplanting hoppers 20a, 20b is adapted to the transplanting of seedlings and the reception of the seedlings from the seedling supplying device 43.

The coupling plate 216 is disposed so as to protrude downward from the upper link arm 21a toward the machine body, the lower end portion of the coupling plate 216 is positioned at the upper end portion of the lower link arm 21b or slightly above the upper end portion, and the other end portion of the lifter crank 215 is attached near the lower end portion of the coupling plate 216.

According to the above configuration, since the lifting crank 215 can be disposed near the lower portion of the machine body, the center of gravity is close to the lower portion of the machine body, and therefore, the machine body is less likely to tilt back and forth due to the weight of the components and the like, and the depth and posture of the seedling are stabilized.

Further, by fitting the other end portion of the lifter crank 215 to the coupling plate 216, the upper link arm 21a is configured not to receive a load directly from the lifter crank 215, and therefore, durability of the upper link arm 21a is improved.

As described above, the load applied by the lifting operation is small, and therefore the upper and lower link arms 21a and 21b may be formed of a square pipe having a hollow interior. When the upper and lower link arms 21a, 21b are light in weight, the load transmitted to the transmission case 26 via the lifting crank 215 and the lifting cam 214 is small, and therefore the durability of the transmission case 26 is also improved.

In addition, the over-slow ascending speed or the over-fast descending speed can not be caused by the weight, the lifting track of the transplanting hoppers 20a and 20b is stable, the transplanting posture and the transplanting depth of the rice seedlings are stable, and the growth is good.

Further, by arranging the lifting cam 214, the lifting crank 215, and the coupling plate 216 between the transmission case 26 and the right and left sides of the vertical movement mechanism 21, the upper and lower link arms 21a and 21b are configured not to interfere with each other when vertically rotating, and therefore, both the upper and lower link arms 21a and 21b can be made linear, and the structure can be simplified and the strength can be maintained.

In order to make the raising and lowering and tilting movements of the transplanting hoppers 20a and 20b more suitable for transplanting seedlings, the upper link arm 21a and the lower link arm 21b are provided with different longitudinal lengths. In this case, the upper link arm 21a is shorter than the lower link arm 21 b.

As described above, the rear end portions of the upper and lower link arms 21a and 21b are fitted between the left and right of the left and right link holders 210 and 210 with a vertical gap therebetween, but at this time, the fitting position of the upper link arm 21a is positioned further toward the front side of the machine body than the fitting position of the lower link arm 21 b.

Accordingly, when the transplanting hoppers 20a and 20b are raised to the vicinity of the top dead center, the distance between the fulcrums at the rear end sides of the upper and lower link arms 21a and 21b becomes longer, and the amount of forward and backward movement of the transplanting hoppers 20a and 20b is suppressed to be small, so that the amount of forward and backward movement of the upside of the transplanting hoppers 20a and 20b is less likely to change near the drop-down supply position of the seedling supply device 43, and the damage of the seedlings due to the failure of the seedlings is reduced.

Further, when the transplanting hoppers 20a and 20b are raised up to the vicinity of the bottom dead center, the distance between the fulcrums at the rear end sides of the upper and lower link arms 21a and 21b becomes shorter, and the amount of forward and backward swinging of the transplanting hoppers 20a and 20b becomes larger, so that the transplanting hoppers 20a and 20b can be changed from the backward inclined posture to the forward inclined posture, and the transplanting hoppers 20a and 20b can be prevented from falling down or being damaged due to contact with the seedlings.

An opening/closing arm 218 is attached to a front end portion of the lower link arm 21b so as to be rotatable forward and backward, and an opening/closing wire 220 for operating an opening/closing mechanism for opening and closing the insertion hoppers 20a and 20b in accordance with the up-and-down position is attached to the upper end portion side of the opening/closing arm 218. A contact roller 219 is provided on the upper rear side of the opening/closing arm 218, and contacts the contact roller 219 when a portion of the non-circular cam 211 having a constant diameter or more passes through the contact roller 219.

When the noncircular cam 211 is in contact with the insertion hoppers 20a and 20b, the opening/closing arm 218 rotates forward and pulls the opening/closing wire 220, and the insertion hoppers 20a and 20b are closed, and when the noncircular cam 211 is not in contact with the insertion hoppers 20a and 20b, the opening/closing arm 218 rotates backward and the opening/closing wire 220 is loosened.

The period during which the transplanting hoppers 20a and 20b are opened is a period from the middle of lowering to the time when the seedlings are transplanted and start to rise, and the period during which the transplanting hoppers 20a and 20b are closed is a period from the time when the seedlings are transplanted and start to rise to receive the seedlings and fall again, and the shape of the non-circular cam 211 corresponds to this.

Notches 221 are formed in the rear portions of the left and right hopper holders 210, respectively, and the notches 221 are コ -shaped openings on the rear side of the machine body. The structure of the hopper holder 210 protrudes rearward from the machine body above and below the notch 221.

The insertion hoppers 20a and 20b have hopper covers 226 covering the upper sides of the hopper holders 225 toward the rear side of the machine body, and have open space portions formed by cutting out the upper surfaces of the left and right sides on the rear side of the machine body. Further, left and right pivot shafts 227, 227 are provided between the rear wall surface of the hopper holder 225 and the rear wall surface of the hopper cover 226 in the front-rear direction, and pivot arms 228, 228 are rotatably attached to the pivot shafts 227, respectively. Most of the left and right pivoting arms 228, 228 protrude upward from the open space.

The left and right pivot shafts 227, 227 are disposed below the body with respect to the notch portions 221 of the link holders 210, 210 and the inter-row adjustment plate 222.

Accordingly, the rotation support shafts 227, 227 on the hopper holder 225 side can be disposed on the lower side of the inter-row adjustment plate 222 without being largely spaced from the link holders 210, 210 in the front-rear direction, and therefore, the insertion hoppers 20a, 20b can be configured to be compact without being excessively positioned in the front-rear direction.

The cable exterior of the opening/closing wire 220 is attached to the outside of the body of the pivoting arms 228, the inside of the body is connected to the inside of the cable, and the left and right pivoting arms 228, 228 are pivoted by pulling and loosening the opening/closing wire 220.

Further, コ -shaped opening/closing arms 230, 230 are attached to the left and right pivot support shafts 227, 227 so as to be pivotable left and right, and left and right hopper stays 229, 229 are attached to the lower portions of the opening/closing arms 230, 230. The opening and closing arms 230, 230 are shaped to cover the front, rear, and upper side of the side surfaces of the hopper stays 229, and as shown in fig. 13, gear portions 230a, 230a are formed on the upper side of the front and rear surfaces, respectively, so that the left and right irregularities are alternately engaged in the vertical direction. The rotation amounts of the opening and closing arms 230 and 230 are synchronized by the meshing of the gear portions 230a and 230a, and the opening degrees are set to opening degrees at which seedlings can be discharged from the transplanting hoppers 20a and 20b without deviation.

Further, support pins 232 and 232 are provided on the left and right sides of the lower portion of the body on the front and rear surfaces of the opening and closing arms 230 and 230, respectively, and springs 233 are disposed on the left and right support pins 232 and 232 on the front and rear sides, respectively, and the springs 233 bias the left and right opening and closing arms 230 and 230 in the direction of approaching each other.

The hopper stays 229 and 229 have front and rear portions bent upward and connected to front and rear portions of the opening and closing arms 230 and 230, and have semicircular cutout portions formed in the inner side portions of the respective body portions at the front and rear bottom portions, and the left and right hopper structures 231 and 231 are fitted to the cutout portions. The left and right hopper structures 231, 231 are configured to be opened more largely in the left-right direction as the lower end portion side is opened, and to be in substantially uniform contact with each other over the upper and lower sides when closed. The hopper structures 231, 231 are formed in a plate shape near the lower ends thereof, and have a shape that reduces resistance when entering the ground.

Further, an opening (not shown) having a diameter substantially the same as or slightly smaller than the uppermost portion of the left and right hopper structures 231, 231 is formed in the hopper cover 226, and a seedling guide 234 is inserted into the opening to be assembled, and the seedling guide 234 causes the seedlings supplied from the seedling supply device 43 to enter and guide the seedlings into the left and right hopper structures 231, 231. The diameters of the left and right hopper structures 231, 231 near the upper ends thereof are larger than the diameters thereof near the lower sides thereof.

The seedling guide 234 has a diameter substantially equal to that of the lower side of the hopper cover 226, and is configured to have a tapered shape in side view and rear view, with the diameter being larger on the upper side of the body than the hopper cover 226.

The upper portion of the seedling guide 234 is tapered, and thus, the diameter of the upper end side is maximized, so that the seedling can be received even if the position where the seedling is dropped and supplied is slightly deviated, and the situation that the seedling is damaged due to the failure of the seedling transplanting in the transplanting hoppers 20a, 20b can be prevented.

Further, the diameter of the lower portion side of the seedling guide 234 is made substantially the same as or slightly smaller than the diameter of the upper end portion of the hopper structures 231, and thus, no gap is generated between the seedling guide 234 and the hopper structures 231, and therefore, seedlings can be reliably received and reliably planted.

Each seedling container 22 has a cylindrical body with an upper opening and a lower opening, and a bottom cover for opening and closing the lower opening of the cylindrical body, and are connected to each other in a ring shape. The moving mechanism revolves the connected seedling storage bodies 22 to the left along an oval annular track which is long in the left-right direction when the machine body is viewed in plan, in a state where the connected seedling storage bodies 22 pass through the upper vicinity of the left and right transplanting hoppers 20a, 20 b. The seedling dropping mechanism opens the bottom cover of the seedling receptacle 22 at a position above the transplanting hoppers 20a, 20b corresponding to the seedling receptacle 22.

In the present application, a cylindrical outer peripheral portion is formed on the outer periphery of the seedling container 22, and engaging portions (circular holes) connected from the outside in a freely rotatable manner are provided on the cylindrical outer peripheral portion, thereby forming a plurality of connected bodies in which 2 seedling containers 22 are connected. Further, the engaging portion of the coupling body is rotatably connected to the cylindrical outer peripheral portion of the seedling housing body 22, and the adjacent seedling housing bodies 22 are rotatably coupled with the cylindrical outer peripheral portion as a rotation axis, thereby coupling the plurality of seedling housing bodies 22 to each other.

Accordingly, in the seedling storage body 22, since the interval between the adjacent seedling storage bodies 22 is not changed in both the linear portion that moves linearly and the arc-shaped portion that moves in an arc shape, a positional deviation of the seedling storage body 22 with respect to the left and right transplanting hoppers 20a, 20b is less likely to occur at the portions where seedlings are supplied from the seedling storage body 22 to the left and right transplanting hoppers 20a, 20b, and it is possible to appropriately supply seedlings and perform appropriate seedling transplanting.

The moving mechanism of the seedling supply device 43 is configured to wind the seedling storage bodies 22 connected to each other like a circulating chain around the arc-shaped cut portions on the outer peripheries of the left and right sprockets, and to rotate the seedling storage bodies 22 by driving the left and right sprockets to rotate by power taken out from the transmission case 26.

The circulation movement path around which the seedling container 22 circulates is a prolate circle having a linear portion extending in the left-right direction in a plan view and an arc-shaped portion curved in an arc shape from the linear portion to the front side or the rear side by a sprocket, and is arranged more inside the machine body than the left and right running wheels 44.

The seedling storage bodies 22 of the seedling supply device 43 move relatively stably in a predetermined direction in the linear portions, but the interval between the seedling storage bodies 22 becomes narrower or wider in the arc-shaped portions on the left and right sides, and there is a possibility that a load is applied to the driving of the seedling supply device 43 to break the seedling storage bodies, or the timing of the falling and supply of the seedlings becomes unstable. To prevent this, star wheels are provided on the inner peripheral edge of the plurality of seedling containers 22 and on both right and left outer sides of the seedling supply device 43 to be driven and rotated, and protrusions are formed on the outer peripheral edge of the star wheels at equal intervals. By inserting these projections into the spaces of the seedling storage bodies 22, the positions of the seedling storage bodies 22 passing through the arc-shaped portions on both the left and right sides of the seedling supply device 43 are secured, thereby preventing the occurrence of overload and the occurrence of falling and supplying timing deviation of seedlings.

The operator sits on the work seat 46 or stands on the floor step 122 to perform the seedling supply work to the seedling supply device 43, but when there is no seedling for replenishment or some problem occurs, for example, when the seedling is not continuously planted in the planting posture, it is necessary to stop the running of the running vehicle body or stop the driving of the planting hoppers 20a, 20 b. Further, when the traveling speed or the ascending/descending progress of the planting buckets 20a and 20b is faster than the progress of the operator, the output of the engine 41 needs to be reduced and changed to a speed at which the operation is easy.

As shown in fig. 4 and 5, in order to perform the above-described operation while sitting on the work seat 46 or without going down from the floor step 122, a 2 nd engine switch 408 is provided on the front and left and right end portions of the body of the seedling supply device 43, that is, on the right hand side of the operator sitting on the work seat 46, the 2 nd engine switch 408 is switched to enable or disable the start of the engine 41 and is provided with a 2 nd throttle lever 409 so as to be rotatable in the body left-right direction at a position inside the body (the other side of the left and right sides of the body) than the 2 nd engine switch 408, and the 2 nd throttle lever 409 is operated to increase or decrease the output of the engine 41.

The method of operating the 2 nd engine switch 408 is the same as that of the 1 st engine switch 407, but if both of the 1 st engine switch 407 and the 2 nd engine switch 408 are not operated to the on position, the engine 41 is not started.

Accordingly, when the operator grips the handle 404 at the rear of the machine body during movement or the like, the stop operation can be performed by the 1 st engine switch 407, and when the operator rides on the traveling vehicle body during seedling transplanting work or the like, the engine 41 can be stopped by performing the off operation on the 2 nd engine switch 408, so that the operator does not need to take off the 1 st engine switch 407 from the traveling vehicle body during riding, and the operation causing a problem in transplanting or the machine body can be interrupted.

Further, since the 2 nd throttle lever 409 can be operated from the traveling vehicle body, it is not necessary to move the traveling vehicle body up and down when increasing or decreasing the output of the engine 41, and the work efficiency and the work accuracy are improved.

The left and right insertion hoppers 20a, 20b are disposed further to the rear side than the position of the travel axle 12. The seedling supply device 43 is configured to supply seedlings by moving the seedling storage body 22 around one turn corresponding to the left and right transplanting hoppers 20a, 20 b. The transplanting hoppers 20a, 20b drop-supply seedlings from the seedling storage body 22 at the 1 st and 2 nd drop-supply positions 31a, 31b, respectively.

The seedling containers 22 for storing the seedlings to be dropped and supplied are provided corresponding to the left and right transplanting hoppers 20a, 20b, respectively, and the bottom cover is opened only when the seedling containers 22 come above the corresponding left and right transplanting hoppers 20a, 20b, and is not opened above the non-corresponding left and right transplanting hoppers 20a, 20 b.

That is, only when the seedling receptacle 22 corresponding to the transplanting hopper 20a comes to the 1 st drop supply position 31a and only when the seedling receptacle 22 corresponding to the transplanting hopper 20b comes to the 2 nd drop supply position 31b, the bottom cover of each is opened and seedlings are supplied to the corresponding transplanting hoppers 20a, 20 b.

The 1 st drop supply position 31a and the 2 nd drop supply position 31b are configured to be movable to corresponding positions when adjusting between the rows of the left and right insertion hoppers 20a, 20 b.

The operation cycle of the moving mechanism is set in synchronization with the operation cycle of the vertical moving mechanism 21, and the seedling receiving bodies 22 corresponding to the left and right transplanting hoppers 20a, 20b are combined to form one seedling receiving body unit, and a plurality of the seedling receiving body units are connected, so that the seedling receiving bodies 22 can supply seedlings corresponding to the left and right transplanting hoppers 20a, 20b without seedling leakage supply while passing through the left and right dropping supply positions 31a, 31b in series, and the seedlings can be supplied corresponding to the left and right transplanting hoppers 20a, 20b without surplus, so that the seedling receiving bodies 22 which are not supplied with seedlings are not generated after passing through the left and right dropping supply positions 31a, 31 b.

In the transplanter 10 of the present application, the soil-covering leveling wheels 37 are provided near the right and left sides behind the seedling planting positions of the right and left planting hoppers 20a, 20b, respectively, and the soil-covering leveling wheels 37 level the soil in accordance with the seedlings planted in the right and left planting hoppers 20a, 20 b. The left and right soil covering and leveling wheels 37 are composed of: leveling arms 370 and 370 each formed by bending a bar into a J-shape in a plan view, and each independently rotatable up and down; and leveling rotating bodies 371, 371 provided on the rear sides of the left and right leveling arms 370, 370 so as to be rotatable left and right, respectively.

Further, one end portion of the leveling arm 370 on the inner side of the body is vertically rotatably attached to the rear portion side of the traveling vehicle body, and the leveling arm 370 bends the rear portion of the straight portion protruding rearward upward, then bends outward and downward, and further bends forward at the same vertical position as the straight portion on the inner side of the body. Further, the flat rotating body 371 on the outer side of the machine body out of the left and right flat rotating bodies 371, 371 is provided on the straight line portion on the outer side of the machine body which is bent toward the front side of the machine body, and the flat rotating body 371 on the inner side of the machine body is fitted on the straight line portion on the inner side of the machine body.

As described above, the relief portion 372 protruding upward from the body is formed at the rear portion of the leveling arm 370, and the left and right leveling rotating bodies 371, 371 are arranged at a left-right interval. Thus, the seedlings planted in the planting hoppers 20a and 20b pass through the left and right spacers of the left and right leveling rotating bodies 371 and 371, and the soil around the seedlings is leveled and passes below the retreat portion 372, so that the soil-covered leveling wheels 37 and 37 are prevented from being pressed down and the planting posture is prevented from being disturbed.

The left and right leveling arms 370 and 370 are respectively mounted so as to be able to adjust the left and right positions of the machine body, and are configured so as to be able to change the positions to be leveled in accordance with the inter-row setting of the insertion hoppers 20a and 20 b. Further, the left and right leveling rotating bodies 371, 371 are configured to reliably fix soil around the planted seedlings when the left and right positions are adjustable, and prevent the seedlings from being fallen down or from being grown poorly at low temperatures.

The field in which the traveling vehicle body performs work may be inclined. The transplanter 10 is provided with a weight such as a transmission case 26, a seedling feeder 43, and transplanting hoppers 20a and 20b on the rear side in the traveling direction, and the front side of the transplanter body is easily lifted when it is tilted upward. In order to suppress this lift, the engine 41 and the transmission case 39 are disposed on the front side of the traveling vehicle body, and the work seat 46 on which the operator rides is disposed to achieve a front-rear weight balance. Therefore, the seedlings are planted on the ridge surface in a rear inclined posture, the appearance is poor, and barriers can be brought to growth. In particular, when the fuel in the fuel tank is consumed by the progress of the work and the number of the supplementary seedlings loaded on the preliminary seedling rack 50 is reduced, the weight of the front side of the machine body is varied, and the front-high and rear-low inclined posture tends to be easily achieved.

Further, when seedlings are put from the seedling supply device 43 into the transplanting hoppers 20a, 20b, the seedlings may fall into the field without entering the upper opening portions of the transplanting hoppers 20a, 20b, and plant shortage may occur at the position where the transplanting is to be originally performed. Even if the seedlings enter the transplanting hoppers 20a, 20b, they are thrown into the rear side of the body near the inside of the transplanting hoppers 20a, 20b, and therefore, they may interfere with the front-rear inclination of the traveling vehicle body, and the transplanting posture may be disturbed.

Further, when the inclination angle is too large, the traveling vehicle body falls, which causes labor and time for collecting the seedlings to be loaded, and also, each part of the machine body may be damaged when the traveling vehicle body falls.

To prevent this, as shown in fig. 16 and 17, left and right inclination sensors 194 and 194 are provided on the mounting base portions of the left and right leveling arms 370 and 370, respectively, and when the running vehicle body is turned by a predetermined angle or more, the left and right inclination sensors 194 and 194 come into contact with the left and right leveling arms 370 and 370. When either one of the left and right inclination sensors 194, 194 is pressed to be in a detection state, it is determined that the traveling vehicle body is in a posture inclined forward at a predetermined angle (for example, 5 to 10 degrees) or more, and the engine 41 is stopped or the transmission of the driving force to the left and right traveling power boxes 38 and 26 is interrupted in the transmission case 39.

Further, the stop actuator 41a is operated to stop the engine 41. The travel transmission actuator 38a for switching the connection/disconnection of the travel clutch (not shown) and the insertion transmission actuator 26a for switching the connection/disconnection of the insertion clutch (not shown) are operated, or the main transmission actuator 125a of the main clutch (not shown) on the transmission upstream side of the travel clutch and the insertion clutch is operated, so that the transmission of the driving force to the left and right travel transmission cases 38 and 26 is interrupted.

Thus, when the traveling vehicle body is in an inclined posture unsuitable for the transplanting work of seedlings, the transplanting work traveling is automatically stopped, thereby preventing the transplanting posture of seedlings from being disturbed and preventing each part of the machine body from being damaged due to the falling.

As shown in fig. 16 and 18, when either of the left and right inclination sensors 194, 194 is in the detection state, the insertion operation travel is stopped, and thereby the excessive front-high rear-low inclination can be detected even if the traveling vehicle body is inclined in the left-right direction of the machine body.

Further, since a load needs to be applied to the front side of the machine body when the left and right tilt sensors 194 and 194 are in the detection state, a mounting portion for a counterweight (not shown) is formed in advance in the damper 109 or the like.

However, when the plant is not planted, for example, when the plant is moved to a field or when the plant is unloaded to a transport unit such as a tractor, the operator grips the operating handle 404 from the rear of the machine body and operates the plant, and therefore, the front-high rear-low inclination of the traveling vehicle body is not particularly problematic. However, when the vehicle is going over a step or moving to a cargo bed, the traveling vehicle body needs to be inclined upward and downward at an inclination angle equal to or larger than the inclination angle of the inclination detected by the left and right inclination sensors 194 and 194. In this case, when the engine 41 or the travel transmission is stopped, the operator must manually move the traveling vehicle body, which requires extra labor, and must restart the engine 41, which causes a problem of fuel consumption.

To prevent this, a boarding sensor 195 is provided on either or both of the work seat 46 and the floor pedal 122, and the boarding sensor 195 detects boarding of the operator. The engine 41 or the traveling and implanting transmission is stopped if the left and right inclination sensors 194 and 194 detect excessive inclination when the boarding sensor 195 detects boarding of an operator, and the engine 41 or the traveling and implanting transmission is not stopped even if the left and right inclination sensors 194 and 194 detect excessive inclination when boarding of an operator is not detected.

In this way, when the insertion work is not performed, the traveling vehicle body can be moved continuously by the driving force, so that the work efficiency is improved and the labor of the operator is reduced.

Further, in order to prevent erroneous detection, as shown in fig. 19, it is sufficient that the 1 st ridge end sensor 182 does not detect the arrival at the ridge end and that one or both of the left and right inclination sensors 194 and 194 are in the detection state. In the place not passing through the ridge, the sensor arm 183 of the 1 st ridge end sensor 182 is rotated downward and always in a state of detecting the ridge end, and in the inclined posture with high front and low back, the contact is not easy even if the ground surface is uneven, so that the stop of the engine 41 or the driving and planting transmission due to the false detection is prevented.

The left and right transplanting hoppers 20a and 20b can adjust the left and right positions according to the transplanting operation conditions of the seedlings to change the row-to-row positions, but if the ground contact position of the ridge surface sensor 14 is not changed in combination with the set row-to-row positions, the detection accuracy may be lowered.

As described above, the traveling vehicle body is configured to change the insertion depth by vertically rotating the left and right traveling transmission boxes 38 by the lift cylinder 300, but in order to make the insertion depth of each of the left and right insertion hoppers 20a, 20b as appropriate as possible, the swing control is embedded, and the swing control vertically rotates only one of the left and right traveling transmission boxes 38, or the traveling transmission box 38 on the left side of the body in this case.

Specifically, a swing cylinder is disposed between the left travel transmission case 38 and the left end of the body of the hydraulic balance, and the swing cylinder is extended or contracted in accordance with the difference in the vertical rotation amount of the left and right soil covering/leveling wheels 37.

When the ridge surface sensor 14 moves over the ridge end without contacting the ground, it rotates downward, and at this time, the vehicle height of the traveling vehicle body is lowered. Accordingly, the operator needs to adjust the height of the vehicle again at the ridge where the next transplanting operation is performed, and therefore, the height of the transplanting operation is appropriately adjusted, and the transplanting accuracy of the seedlings is improved.

As shown in fig. 20, a 2 nd ridge end sensor 188 is provided on the left and right sides of the body of the ridge surface sensor 14, and the 2 nd ridge end sensor 188 is rotated upward while contacting the ridge surface sensor 14, and is rotated downward when reaching the ridge end, thereby detecting that the traveling vehicle body has reached a position beyond the seedling planting range. The 2 nd ridge end sensor 188 is configured such that a ridge end detection rotation arm 189 is provided on the left and right sides of the body of the ridge surface sensor 14 so as to be rotatable, a ridge end detection contact plate 190 and a 2 nd ridge end detection switch 191 are provided below the ridge end detection rotation arm 189, and when the ridge end detection contact plate 190 rotates downward, the ridge end detection rotation arm 189 is separated, and the 2 nd ridge end detection switch 191 is turned on (or off).

As shown in fig. 16 and 21, when the ridge end is detected by the 2 nd ridge end detection switch 191 in a state where the 1 st ridge end detection switch 186 detects the ridge end, the engine 41 is stopped or the transmission of the driving force to the left and right traveling transmission cases 38 and 26 in the transmission case 39 is interrupted.

According to the above structure, after all seedlings are planted in the planting space of the seedlings, the driving and planting transmission is cut off before the seedlings leave the ridge, so that extra driving and planting actions are prevented, fuel consumption is suppressed, and the seedlings are prevented from being released at positions other than the ridge and falling to the ground.

Further, when neither the 1 st ridge end sensor 182 nor the 2 nd ridge end sensor 188 detects the ridge end, the traveling and the insertion transmission are not cut off, and therefore, even if the 2 nd ridge end detection switch 191 is brought into a detection state by the downward rotation of the 2 nd ridge end sensor 188 due to, for example, a large depression generated in the ridge surface, the insertion operation traveling is not interrupted, and the reduction in the operation efficiency is prevented.

Further, since the 1 st ridge end sensor 182 and the 2 nd ridge end sensor 188 are disposed apart in the front-rear direction of the body, even if a large depression is generated in the middle of the ridge and there is a portion where the 1 st ridge end sensor 182 and the 2 nd ridge end sensor 188 each rotate downward greatly, if either one of them contacts the ridge, the travel of the transplanting work is not interrupted, and the work efficiency is prevented from being lowered.

Instead of the 2 nd ridge end sensor 188, the ridge surface sensor 14 and the right and left inclination sensors 194, 194 may be used to stop the traveling vehicle body at the ridge end.

As shown in fig. 22, when the traveling vehicle body moves forward and the ridge surface sensor 14 is separated from the ridge surface and turned downward, the lift cylinder 300 extends, and the left and right traveling transmission cases 38, 38 are turned upward, thereby lowering the height of the traveling vehicle body. At this time, the left and right soil leveling wheels 37, 37 still contact the ridge surface, and therefore, the left and right leveling arms 370, 370 turn upward and contact the left and right inclination sensors 194, 194.

Thus, the engine 41 or the driving and transplanting transmission is stopped, and the driving vehicle body can be stopped at the ridge end and at the position where the seedlings are planted to the transplanting space on the ridge, thereby preventing the consumption of additional fuel and seedlings.

In the above configuration, in addition to the 2 nd ridge end sensor 188, the engine 41 may be stopped or the travel and the insertion transmission may be stopped when the left and right inclination sensors 194 and 194 are in the detection state in a state where both the 1 st ridge end sensor 182 and the 2 nd ridge end sensor 188 detect the ridge end.

As shown in fig. 23, by using the 2 nd ridge end sensor 188, even if the 1 st ridge end sensor 182 in contact with the ridge surface is turned upward by the convex portion of the ridge surface and the left and right leveling arms 370, 370 are turned upward by the convex portion of the ridge surface and are in contact with the inclination sensors 194, the traveling and insertion transmission are not stopped, and therefore, erroneous detection can be more reliably prevented.

In this configuration, the following conditions are set: when the left and right leveling arms 370, 370 contact the left and right inclination sensors 194, 194 in a state where the 1 st ridge end sensor 182 does not detect the ridge end, the engine 41 or the running and planting transmission is stopped, and the running vehicle body is reliably stopped when the running vehicle body is in a front-high rear-low inclined posture. The 1 st ridge end sensor 182 is configured to be in contact with the ridge surface at a front-high rear-low inclination angle at which the left and right leveling arms 370, 370 are in contact with the left and right inclination sensors 194, 194.

In the present application, the work seat 46 on which the operator sits is provided so that the operator who supplies the seedlings to the seedling supply device 43 performs the seedling supply work by riding in the vehicle. Specifically, the work seat 46 is disposed rearward at the center of the right and left of the body, which is the front side of the seedling supply device 43. The operator sitting on the work seat 46 sits on the front side of the seedling supply device 43 in a posture facing the rear side, and performs the seedling supply work in correspondence with the front side of the seedling supply device 43, particularly the front linear portion in the circulating movement path of the seedling storage body 22.

Further, a main clutch lever 125 is provided on the other of the left and right sides of the steering panel 47a, and the main clutch lever 125 is incorporated in the transmission case 39 to connect/disconnect the transmission of the driving force to the left and right traveling transmission cases 38 and 26.

When moving to a field, unloading from the transport unit, storing in a warehouse, and turning at the end of the field, the operator operates the steering handle 404 at the rear of the machine body. On the other hand, in the transplanting operation of seedlings, the operator gets on the operation seat 46 and is difficult to operate the operation panel 47a of the operation handle 404.

Therefore, the traveling vehicle body is provided with an on-vehicle body operation unit 126 for the operator riding on the work seat 46.

As shown in fig. 4 and 15, a rear step 127 inclined upward toward the rear side of the machine body is provided at the lower portion of the seedling supply device 43, and as shown in fig. 2, 4, 5 and 15, an upper vehicle body control portion 126 is provided at either of the left and right sides of the rear step 127, at the end of the right side of the machine body in the present case (the left side based on the operator sitting on the work seat 46).

The vehicle body upper control unit 126 has a 2 nd vehicle height adjustment lever 128 disposed on the outermost body side, the 2 nd vehicle height adjustment lever 128 adjusts the vehicle height of the traveling vehicle body to adjust the insertion depth of the insertion hoppers 20a, 20b, and a 2 nd main clutch lever 129 is disposed on the inner body side of the 2 nd vehicle height adjustment lever 128.

In addition, since there is substantially no need to fix the height during the transplanting operation of the seedlings, the 2 nd vehicle height adjusting lever 128 is constructed to have only the "high" position and the "low" position.

Further, a vehicle height adjusting lever guide is provided at an outer end of the rear pedal 127 in a posture inclined upward toward the front side of the machine body, the vehicle height adjusting lever guide having a display scale indicating a vehicle height standard and converging the 2 nd vehicle height adjusting lever 128 into a frame, and a main clutch lever guide having the 2 nd main clutch lever 129 converged into a frame is provided at an inner side of the machine body of the vehicle height adjusting lever guide 130 in a posture inclined upward toward the front side of the machine body.

Further, the 2 nd vehicle height adjustment lever 128 projects toward the body front side by a larger amount than the 2 nd main clutch lever 129.

In addition, when the 2 nd vehicle height adjustment lever 128 and the 2 nd main clutch lever 129 are rotatably attached to the attachment support plate and the front and rear beam frames on the left and right sides of the machine body (the right side of the machine body) on the base side, it is not necessary to additionally provide attachment members, and the number of components can be reduced.

Further, a side clutch pedal for engaging/disengaging the left and right side clutches is provided on the left side of the body, which is the other side of the left and right sides of the body than the vehicle body upper control unit 126, so as to be exposed to the upper surface of the rear pedal 127.

The body height adjustment lever guide and the main clutch lever guide are disposed at a certain up-down interval from the upper surface of the side pedal 118. The vertical interval is set to a level (for example, about 15cm to 20cm) that can secure a space even when the operator's foot is placed therein.

According to the above configuration, the operator riding on the floor pedal 122 and the work seat 46 can perform the manual operation of the transplanting depth and the manual operation of the connection/disconnection of the transplanting work without falling from the traveling vehicle body, and therefore, the work efficiency is improved and the transplanting accuracy of the seedlings is improved.

Further, by disposing the 2 nd main clutch lever 129 inside the machine body closer to the work seat 46 than the 2 nd vehicle height adjustment lever 128, the hand of the operator can easily reach the 2 nd main clutch lever 129 used for the replenishment of seedlings, the correction of the transplanting state, the rest, and the like, and the labor can be reduced.

In particular, the transplanting work of the seedlings can be promptly interrupted when a problem occurs, the re-transplanting work of the seedlings is not required, and the number of the seedlings which are not suitable for growth and are discarded is reduced.

Further, by projecting the 2 nd vehicle height adjustment lever 128 further toward the front side of the machine body than the 2 nd main clutch lever 129, it is not necessary to greatly extend the arm when the 2 nd vehicle height adjustment lever 128 on the side away from the work seat 46 is operated, and the labor of the operator is reduced.

Further, by providing the left and right side clutch pedals at the rear pedal 127, when the traveling direction of the traveling vehicle body deviates from the straight traveling direction based on the ridges, the traveling path of the traveling vehicle body can be corrected by operating any one of the side clutch pedals to temporarily bring the corresponding side clutch into the off state, thereby preventing the transplanting position of the seedling from meandering in the left and right directions.

Further, since the vertical space is formed vertically between the vehicle height adjustment lever guide and the main clutch lever guide, that is, between the vehicle body upper operation portion 126 and the side step 118, the movement of the feet of the operator riding on the work seat 46 is not hindered, and the operator can ride in a comfortable posture, thereby reducing the labor.

In the side view of the machine body, preliminary seedling racks 50 are provided on both the left and right sides of the work seat 46 and above the traveling axles 12 of the traveling wheels 44, and the preliminary seedling racks 50 can accommodate seedlings to be supplied to the seedling supply device 43.

The preliminary seedling frame 50 is configured such that a support stay is provided on the upper part of a seedling support column 51 projecting to the outside of the body of the traveling vehicle body, a seedling support turning arm capable of switching between a turning state and a non-turning state is provided on the support stay, a seedling frame in the vertical direction is disposed on the seedling support turning arm at intervals, and a container such as a seedling box or a seedling tray for storing a seedling for replenishment is placed on the placing table 55 at one end of the seedling frame on the same plane as the placing table 55.

Only one table 55 may be provided in the vertical direction, but a plurality of tables 55 may be disposed at intervals in the vertical direction that do not hinder the container removal.

The prepared seedling racks 50 having the above-described structure are respectively provided on both left and right sides of the traveling vehicle body, and are combined to rotate the seedling placing rotor arms on the support stays. For example, in the case of transplanting a seedling, the longitudinal direction of the placing table 55 is directed in the front-rear direction of the machine body, so that it is easy to take out a container of the seedling from the placing table 55 and to replace the empty container, thereby improving the work efficiency.

Further, since the placement tables 55 are positioned on both the left and right sides of the traveling vehicle body at this position, the operator can easily grasp the end portions of the riding portions of the traveling vehicle body, and the feet are prevented from being exposed from the traveling vehicle body and losing their posture.

When the operator rides on or off the traveling vehicle body, the seedling placing/rotating arm is rotated by about 90 degrees. Thus, space portions for boarding and alighting are formed on both the left and right sides of the traveling vehicle body.

Further, the operator can also take in and out from the front side of the traveling vehicle body, but when the seedling placing/rotating arm is rotated to bring the seedling rack frame to the front side of the machine body and the placing table 55 to the rear side of the machine body, the operator can use the seedling rack frame as the armrest, and therefore, the traveling vehicle body can be smoothly taken in and out.

Further, when the container for seedlings is loaded or unloaded on the loading table 55, if the container is loaded or unloaded from the rear side of the machine body, there is no member that hinders the loading or unloading of the container, and therefore, the work efficiency is improved.

The work seat 46 is mounted to the traveling vehicle body at an upper portion of a portion of the seat frame that is in the left-right direction of the machine body, and the seat frame 49 spans a machine body cover that is コ -shaped in front view or rear view and covers the engine 41 and the like. The base portions of the left and right seat stays facing the front side of the body are attached to the upper portion of the seat frame, and the work seat 46 is attached so as to be rotatable in the front-rear direction of the body about a rotation fulcrum in the left-right direction of the base portions of the left and right seat stays.

Thus, the work seat 46 can be placed in a state of contacting the vicinity of the front end of the body of the seedling supply device 43, and therefore, it is possible to prevent sand and rain water from adhering to the seating portion of the operator when the work is interrupted.

When transplanting seedlings into a field, so-called irrigation work, which is a process of supplying water to the vicinity of the planted seedlings, is sometimes performed in consideration of conditions such as soil texture of the field, surrounding water environment, and climate before work.

In the transplanter of the present application, as shown in fig. 1 to 4, water tank holders 601 that hold water tanks 600 are provided in the left and right travel transmission boxes 38, respectively.

The irrigation water stored in the water tank 600 is pumped up by the operation of an irrigation pump (not shown) provided at the bottom of the traveling vehicle body near the front-rear center of the body, and discharged to the positions where seedlings are planted in the planting hoppers 20a, 20 b. The irrigation pumps are disposed in correspondence with the number of the insertion hoppers 20a, 20b, and are disposed on the left and right sides with an interval therebetween with respect to the left and right center portions of the traveling vehicle body.

Claims (3)

1. A transplanter having a traveling vehicle body provided with an insertion hopper, a work seat (46) on which a worker rides, and a control handle (404) for operating the traveling vehicle body,

the work seat (46) is disposed so that an operator who rides the work seat faces a direction opposite to a traveling direction of a traveling vehicle body, a visual device (157) is provided on the handle (404), the visual device (157) enables the operator who rides the work seat (46) to visually recognize a scene on the traveling direction side of the traveling vehicle body, and the visual device (157) is provided so as to be adjustable in vertical position.

2. The grafting machine of claim 1,

a seedling supply device (43) for supplying and conveying the thrown seedlings is arranged at the front side of the machine body of the transplanting hopper, the seedling supply device (43) and the operating handle (404) are connected by a reinforcing frame (152),

the reinforcing frame (152) is provided with a rotating support plate (153), the visual device (157) is rotatably mounted on the rotating support plate (153), the rotating support plate (153) is configured in a posture that the rotating support plate protrudes from the reinforcing frame (152) towards one side or the other side of the left and the right of the machine body, and,

the visual device (157) is composed of a visual rotating arm (154) with a base part assembled on the rotating support plate (153) and a visual component (155) assembled on the end part of the visual rotating arm (154) in a rotatable way.

3. The grafting machine of claim 2,

the transplanter is provided with an up-down moving mechanism (21) which enables the transplanting hopper to lift,

a rotation limiting part (153a) is formed on the rotation supporting plate (153), the rotation limiting part (153a) limits the downward rotation of the visual device (157), and the rotation limiting part (153a) is configured to be positioned above the machine body than the position when the vertical moving mechanism (21) rotates most upward.

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