JP7055093B2 - Passenger rice transplanter - Google Patents

Description

The present invention relates to a configuration of a spare seedling stand in a passenger-type rice transplanter.

In the passenger-type rice transplanter, as disclosed in Patent Document 1, spare seedling pedestals are provided on the right and left portions of the front part of the machine having a driver's seat, and a plurality of spare seedling pedestals are moved up and down. The spare seedling stand was supported so that the position could be changed in the first state in which the spare seedling stands were arranged at predetermined intervals in the direction and in the second state in which a plurality of spare seedling stands were arranged in a row in the front-rear direction. There is something.

In Patent Document 1, a plurality of support links are connected over a plurality of spare seedling pedestals as a support mechanism for supporting the spare seedling pedestal so as to be repositionable to the first state and the second state. As the support link swings around the axis in the left-right direction, the reserve seedling stand is in the first state (see FIGS. 1 and 7 of Patent Document 1) and the second state (FIG. 3 and 8 of Patent Document 1). See).

Japanese Unexamined Patent Publication No. 2010-11813

In Patent Document 1, since the support link is connected to the front end of the spare seedling stand, in the first state of the spare seedling stand, the front part of the upper spare seedling stand and the lower spare seedling stand The support link is located over the front part.

As a result, in the first state of the spare seedling stand, when the operator in the driver's seat visually looks diagonally forward to the right and left, the front is passed between the upper spare seedling stand and the lower spare seedling stand. Support links located across the front of the upper sapling pedestal and the front of the lower sapling pedestal for visual inspection can limit visibility, leaving room for improvement. be.

The present invention is a passenger supported so as to be repositionable in a first state in which a plurality of spare seedling stands are arranged at predetermined intervals in the vertical direction and a second state in which a plurality of spare seedling stands are arranged in a row in the front-rear direction. In the rice transplanter, the purpose is to reduce the limitation of the view when the worker in the driver's seat looks diagonally forward to the right and left.

In the passenger-type rice planting machine of the present invention, support frames provided on the right and left parts of the front part of the machine having a driver's seat and a plurality of spare seedling stands are arranged at predetermined intervals in the vertical direction. In the first state and the second state in which the plurality of spare seedling pedestals are arranged in a row in the front-rear direction, a support mechanism for supporting the spare seedling pedestal on the support frame so as to be repositionable is provided. , The support mechanism is arranged between the upper spare seedling pedestal in the first state and the lower spare seedling pedestal in the side view, and the spare seedling in the first state. Around the first axis in the left-right direction arranged on a virtual line passing through the center of the front and rear of the platform in the vertical direction, the first support link swingably supported by the support frame and the first in the side view. Around the second axial core in the left-right direction arranged between the upper spare seedling pedestal and the lower preliminary seedling pedestal in one state and rearward of the first axial core. A second support link supported by the support frame so as to be swingable is provided, and the portion of the first support link in the first state extending diagonally upward from the first axial core. The upper side of the spare seedling pedestal in the first state is swingably connected around the axis in the left-right direction, and the first support link in the first state is diagonally downward from the first axis. The lower spare seedling pedestal in the first state is swingably connected around the axis in the left-right direction to the portion extended to the second support link in the first state. The spare seedling pedestal on the upper side in the first state is swingably connected around the shaft core in the left-right direction to the portion extending diagonally upward from the second shaft core, and in the first state. The lower spare seedling pedestal in the first state is swingably connected around the axis in the left-right direction to the portion of the second support link extending diagonally downward from the second axis. Has been done.

According to the present invention, when the first support link and the second support link are provided in the support mechanism that supports the reserve seedling stand so as to be repositionable to the first state and the second state, the upper side in the first state is provided. The first in the left-right direction, which is placed between the spare seedling stand and the lower spare seedling stand, and is placed in a virtual line that passes through the front-rear center of the spare seedling stand in the first state in the vertical direction. The axis is set and the first support link is swingably supported around the first axis.
As a result, the first support link can be arranged near the center of the spare seedling stand in the anteroposterior direction, and the first support link is located from the front end to the rear side of the spare seedling stand. It can be connected to the part of the seedling so that it is not connected to the front end of the stand for the spare seedlings.

According to the present invention, with respect to the above-mentioned first shaft core, it is arranged between the upper spare seedling resting table and the lower spare seedling resting table in the first state, and is rearward of the first shaft core. A second axis in the left-right direction arranged in the above is set, and the second support link is swingably supported around the second axis, and the second support link is located behind the first support link. Be placed.

According to the present invention, in the first state of the preliminary seedling pedestal, the first support link and the second support link are arranged on the rear side with respect to the preliminary seedling pedestal. It is possible to obtain a region in which the first support link and the second support link do not exist between the front part and the front part of the lower reserve seedling stand.

As a result, when the operator in the driver's seat looks diagonally forward to the right and left in the first state of the spare seedling stand, he looks forward through between the upper spare seedling stand and the lower spare seedling stand. At that time, the first support link and the second support link rarely limit the view, so that the view of the driver in the driver's seat can be widened, and the workability is improved.

In the present invention, the upper side of the spare seedling pedestal in the first state extends in the left-right direction to the portion of the first support link extending diagonally upward from the first shaft core in the first state. In the first state, the first support link is swingably connected around the axis of the shaft and extends diagonally downward from the first axis to the rear side of the first support link. The lower reserve seedling stand is swingably connected around the axis in the left-right direction, and extends diagonally upward from the second axis of the second support link in the first state. The upper side of the spare seedling pedestal in the first state is swingably connected around the axis in the left-right direction, and the second axis of the second support link in the first state is connected to the portion. It is preferable that the lower reserve seedling pedestal in the first state is swingably connected around the axis in the left-right direction to the portion extending diagonally downward from the rear side.

Since the driver's seat worker often looks at the rice field, when the driver's seat worker looks at the diagonally front right and left, he looks at the diagonally lower right and left diagonally forward and looks at the rice field. I have something to do.

According to the present invention, in the first state of the reserve seedling pedestal, the first support link and the second support link extend diagonally upward on the front side from the first shaft core and the second shaft core, and diagonally downward on the rear side. Since it extends to the side, the area where the first support link and the second support link do not exist between the front part of the upper spare seedling stand and the front part of the lower spare seedling stand is the lower part. The area around the stand for the spare seedlings becomes large.

As a result, when the operator of the driver's seat visually looks at the diagonally lower right and left diagonally forward and visually at the field surface, the lower side, which is a large area where the above-mentioned first support link and second support link do not exist. By visually observing the vicinity of the spare seedling stand, the first support link and the second support link rarely limit the view, and the view of the driver's seat worker can be widened, and the workability is improved. improves.

In the present invention, an operating tool for artificially operating the preliminary seedling pedestal in the first state and the second state is provided , and the operating tool is provided in the first state in the first state. It is preferable that the seedlings are located on the rear side of the connection portion between the spare seedling pedestal and the second support link on the upper side of the above .

When the spare seedling stand is supported so as to be repositionable to the first state and the second state, the operator may provide an operating tool for operating the spare seedling stand in the first state and the second state.
According to the present invention, the operating tool is provided on the rear side of the connection portion between the spare seedling stand and the second support link, and the operating tool is in a state close to the driver's seat. It is possible to hold the operating tool without difficulty, and the operability of the operation of the spare seedling pedestal in the first state and the second state is improved.

In the present invention, by fixing the posture of the second support link with respect to the spare seedling stand, the spare seedling stand can be held in the first state and the second state, and the second support link can be held. It is preferable that the holding mechanism capable of allowing the operation of the preliminary seedling pedestal to the first state and the second state is provided by allowing the preliminary seedling pedestal to swing.

When the spare seedling stand is supported so as to be repositionable in the first state and the second state, a holding mechanism for holding the spare seedling stand in the first state and the second state may be provided.
According to the present invention, the first support link and the second support link swing with respect to the spare seedling stand that maintains a substantially horizontal posture, so that the spare seedling stand moves in the vertical direction and the front-back direction. The position is changed to the first state and the second state.

According to the present invention, the holding mechanism holds the spare seedling stand in the first and second states by fixing the posture of the second support link with respect to the spare seedling stand. Therefore, the holding mechanism holds the spare seedling stand. Can be reasonably held in the first state and the second state.

According to the present invention, the holding mechanism fixes the posture of the second support link with respect to the reserve seedling stand, and the second support link is arranged behind the first support link.
As a result, the holding mechanism is arranged at the rear of the reserve seedling stand, and the holding mechanism may limit the view when the operator in the driver's seat looks diagonally forward to the right and left. The number is small, and the view of the driver in the driver's seat can be widened, and workability is improved.

In the present invention, a holder for artificially operating the holding mechanism is provided , and in the first state, the holder is an upper side of the spare seedling rest and the second support in the first state. It is preferable that it is located behind the connection portion with the link .

When a holding mechanism capable of holding the spare seedling pedestal in the first state and the second state is provided, a holding tool for the operator to operate the holding mechanism may be provided.
According to the present invention, the holder is provided on the rear side of the connection portion between the spare seedling stand and the second support link, and the holder is in a state close to the driver's seat, so that the operator of the driver's seat Can hold the holder without difficulty, and the operability of the holding mechanism is improved.

It is a left side view of a passenger-type rice transplanter. It is a top view of the front part of a passenger-type rice transplanter. It is a front view of the front part of a passenger-type rice transplanter. It is a left side view near the stand of the spare seedling on the left of the first state. It is a left side view near the stand of the spare seedling on the left of the second state. It is a left side view which shows the state which the position of the reserve seedling stand on the left of the 1st state was changed to the central position, the front side position and the rear side position. It is an exploded perspective view near the 1st support link and the 2nd support link on the left. It is a vertical sectional front view near the support member on the left. It is a left side view near the left support member. In the first alternative embodiment of the invention, the left side view and the rear view near the left preliminary seedling stand. It is a left side view in the vicinity of the left operating tool and the holding tool in the 1st alternative embodiment of the invention. It is a left side view which shows the outline of the vicinity of the reserve seedling stand on the left of the 1st state in the 2nd alternative embodiment of the invention.

In FIGS. 1 to 12, F indicates a forward direction, B indicates a backward direction, U indicates an upward direction, and D indicates a downward direction. R indicates the right direction, and L indicates the left direction.

(Overall configuration of passenger rice transplanter)
As shown in FIG. 1, in a passenger-type rice transplanter, a link mechanism 4 is supported so as to be swingable up and down on the rear part of the machine body 3 provided with right and left front wheels 1 and right and left rear wheels 2. A hydraulic cylinder 5 that extends to the rear side and raises and lowers the link mechanism 4 is provided.

The seedling planting device 6 is supported by the rear part of the link mechanism 4, and a fertilizer application device 7 for supplying fertilizer to the rice field surface is provided over the rear part of the machine body 3 and the seedling planting device 6, and the seedling planting device 6 is provided. A ground leveling device 8 for leveling the rice field is supported at the lower part on the front side.

As shown in FIGS. 1, 2, and 3, a plurality of spare seedling stands 31 and 32 are arranged on the right and left portions of the front portion of the machine body 3.
(Structure of front and rear support mechanism that supports the spare seedling stand and support mechanism so that the position can be changed in the front-back direction), which will be described later, and (Operating tool and holding for operating the spare seedling stand in the first state and the second state). As described in (Structure of mechanism and holder), the spare seedling rests 31 and 32 are supported by the machine body 3 via the front-rear support mechanism 37 and the support mechanism 45.

(Structure of the front part of the aircraft)
As shown in FIGS. 1, 2, and 3, a support frame 23 is connected to a mission case 22 arranged at the front of the airframe 3 and extended to the front side, and an engine (not shown) is supported by the support frame 23. Has been done. A bonnet 24 that covers the engine is provided at the front portion of the machine body 3.

A steering handle 25 for steering the front wheel 1, a shift lever 26 for traveling, and an elevating lever 27 for operating the hydraulic cylinder 5 are provided on the upper part of the bonnet 24.
The arch-shaped operation arm 53 is supported by the support frame 23 so that it can be operated from the standing posture (see FIGS. 1, 2 and 3) and the forward leaning posture tilted forward from the standing posture, and the operation arm 53 is supported. A center mascot 54 is provided at the top of the.

A floor 28 is provided from the right side and the left side of the bonnet 24 to the rear side of the bonnet 24, and the driver's seat 20 is arranged in the upper part of the rear part of the floor 28.
The worker moves left and right between the right and left spare seedling stands 31 and 32 and the driver's seat 20 to get on and off the machine 3.

On the floor 28, between the bonnet 24 and the right spare seedling stands 31 and 32, and between the bonnet 24 and the left spare seedling stands 31 and 32 are right and left passages, and the worker can use them. Move in the front-back direction on the right or left passage to get on and off the aircraft 3.

A brake pedal 55 is provided on the right side of the bonnet 24 on the floor 28, a brake lever 56 connected to the brake pedal 55 is provided, and a lock lever 57 is provided on the floor 28.

For example, when entering a paddy field over a ridge, or when leaving a paddy field over a ridge, the operator gets off the machine 3 and stands in front of the machine 3, sets the operation arm 53 in a forward leaning posture, and operates. By holding the arm 53, the orientation of the machine body 3 can be corrected, and the floating of the front part of the body body 3 can be suppressed.

The operator reaches out to operate the shift lever 26, or holds the brake lever 56 to operate the brake pedal 55. By hooking the lock lever 57 on the brake pedal 55 and the brake lever 56 in the depressed state (braking state), the brake pedal 55 and the brake lever 56 can be held in the depressed state (braking state).

(Structure of seedling planting device)
As shown in FIG. 1, the seedling planting device 6 is provided with a planting transmission case 9, a rotating case 10, a planting arm 11, a float 12, a seedling stand 13, and the like.

The rotary case 10 is rotatably supported on the right and left portions of the rear portion of the two planting transmission cases 9, and the planting arms 11 are supported on both ends of the rotary case 10. The seedling stand 13 is supported so as to be able to reciprocate in the left-right direction.

As the seedling stand 13 is driven to reciprocate and laterally feed in the left-right direction, the rotary case 10 is rotationally driven, and the planting arms 11 alternately take out the seedlings from the lower part of the seedling stand 13 and plant them on the rice field surface.

(Configuration of fertilizer application device)
As shown in FIG. 1, the fertilizer application device 7 is provided with a hopper 15, a feeding portion 16, a blower 17, a groove making device 18, a hose 19, and the like.

In the machine body 3, a hopper 15 for storing fertilizer and a feeding portion 16 are supported on the rear side of the driver's seat 20, and a blower 17 is provided on the left lateral side of the feeding portion 16. A grooving device 18 is attached to the float 12, four grooving devices 18 are provided, and four hoses 19 are connected to the feeding portion 16 and the grooving device 18.

The fertilizer of the hopper 15 is fed out by the feeding portion 16 and is supplied to the groove making device 18 through the hose 19 by the transport air of the blower 17. Fertilizer is supplied from 18 to the ditch on the surface of the field.

(Structure of ground leveling device)
As shown in FIG. 1, the right and left support cases 14 supported by the seedling planting device 6 extend to the front side, and the drive shaft (not shown) extends over the front portion of the support case 14. Is rotatably supported, and a large number of leveling bodies 21 are attached to the drive shaft.

The power of the seedling planting device 6 is transmitted from the planting transmission case 9 to the drive shaft via the transmission chain (not shown) of the support case 14, and the drive shaft and the leveling body 21 are counterclockwise in FIG. The ground leveling body 21 performs the leveling of the rice field surface.

(Structure of front-back support mechanism that supports the spare seedling stand and support mechanism so that the position can be changed in the front-back direction)
As shown in FIGS. 1 to 4, the frame 29 is connected to the support frame 23 and extends to the right and left sides from the support frame 23, and the bracket 30 is connected to the right end portion and the left end portion of the frame 29. ing.

The lower part of the right and left support frames 33 is supported so as to be swingable back and forth around the left-right axis P1 of the bracket 30, and the lower part of the right and left support arms 34 is the left-right axis of the bracket 30. The support frame 33 and the support arm 34 are extended upward so as to be swingably supported around P2 in the front-rear direction.

As shown in FIGS. 2 and 3, recesses 28a are formed in the right front portion and the left front portion of the floor 28, and the left-right width in the vicinity of the bonnet 24 on the floor 28 is the left-right width in the vicinity of the driver's seat 20 on the floor 28. It is smaller than. The bracket 30, the lower part of the support frame 33, and the lower part of the support arm 34 are arranged so as to enter the recess 28a of the floor 28 in a plan view.

As shown in FIGS. 3, 7, 8 and 9, the support member 35 bent into an angle shape is connected to the upper end portion of the support frame 33, and the fulcrum shaft 33a is outwardly attached to the upper end portion of the support frame 33. It is connected.

As shown in FIGS. 4, 7 and 8, the support member 36 formed by bending the plate material into a box shape can swing around the axis P3 (corresponding to the first axis) in the left-right direction, and the support frame. It is supported by the fulcrum shaft 33a of 33. The upper end portion of the support arm 34 is swingably connected around the axis P4 in the left-right direction to the arm portion 36a extending forward from the support member 36.

As shown in FIGS. 1, 4, and 6, the support frame 33, the support arm 34, and the support member 36 are configured as parallel quadruple links in a side view. By swinging the support frame 33 and the support arm 34 back and forth, the support member 36 maintains the posture along the vertical direction, the support frame 33 is at the center position B1 along the vertical direction, and the support frame 33 is on the front side. The position is changed in the front-rear direction to the front position B2 inclined to the front side and the rear side position B3 inclined to the rear side of the support frame 33.

As shown in FIG. 3, right and left torsion springs 46 in which a round bar-shaped elastic material is bent are provided. The torsion spring 46 is arranged along the axis P1 so that one end of the torsion spring 46 is connected to the support frame 23 and the other end of the torsion spring 46 is connected to the support frame 33. The torsion spring 46 urges the support frame 33 from the front position B2 and the rear position B3 to the center position B1.

As described above, the front-rear support mechanism 37 including the support frame 33, the support arm 34, the support member 36, and the like is provided. As described later (configuration of the support mechanism that supports the spare seedling pedestal to the front-rear support mechanism so that the position can be changed to the first state and the second state), the spare seedling pedestal 31 and 32 provide the support mechanism 45. It is supported by the support member 36 and the support frame 33 via the support member 36.

The support frame 33 and the support arm 34 are provided on the right and left portions of the front part of the machine body 3, and the spare seedling rests 31, 32, the support mechanism 45 and the front and rear support mechanism 37 are provided on the front part of the machine body 3. It is provided on the right part and the left part. The spare seedling rests 31, 32 and the support mechanism 45 are supported by the front-rear support mechanism 37 at the central position B1, the front position B2, and the rear position B3 so as to be repositionable in the front-rear direction.

(Structure of front / rear holding mechanism that can hold front / rear support mechanism at center position, front side position and rear side position)
As shown in FIGS. 2, 3, 4, and 7, the round bar material is bent, and the front-rear operating tool 38 for artificially changing the positions of the spare seedling rests 31, 32 and the support mechanism 45 in the front-rear direction is provided. It is provided.

The front-rear operating tool 38 is rotatably supported around the axis P5 along the front-rear direction of the support member 36, and extends from the support member 36 to the front side and the rear side. As shown in FIGS. 7 and 8, a round bar-shaped engaging portion 38c is connected to the front-rear operating tool 38 inside the support member 36.

The front end portion of the front-rear operating tool 38 is bent downward, the front end portion of the front-rear operating tool 38 is provided with a handle portion 38a along the vertical direction, and the rear end portion of the front-rear operating tool 38 is bent downward. Therefore, a handle portion 38b along the vertical direction is provided at the rear end portion of the front-rear operating tool 38.

As shown in FIGS. 7, 8 and 9, an arcuate guide hole 39 is opened in the support member 35 in a side view. The guide hole 39 is provided with a central holding portion 39a, a front holding portion 39b, and a rear holding portion 39c that are opened downward, and a restraining portion 39d that projects downward from the upper side of the central holding portion 39a.

The engaging portion 38c of the front-rear operating tool 38 is inserted into the guide hole 39. Inside the support member 36, a receiving plate 38d is connected to the front-rear operating tool 38, and a spring 40 is attached between the receiving plate 38d of the front-rear operating tool 38 and the inner surface of the support member 36. The front-rear operating tool 38 is urged in the counterclockwise direction in FIG. 8 by the spring 40, and the engaging portion 38c of the front-rear operating tool 38 is the central holding portion 39a, the front holding portion 39b, and the rear holding portion of the guide hole 39. It is urged to enter 39c.

As described above, the spare seedling pedestals 31, 32 and the support mechanism 45 can be held at desired positions in the front-rear direction between the front-rear operating tool 38 and the support member 35, and the spare seedling pedestals 31, 32 and A front-rear holding mechanism 61 capable of allowing the position of the support mechanism 45 to be changed in the front-rear direction is provided, and the front-rear holding mechanism 61 is provided with an engaging portion 38c of the front-rear operating tool 38, a support member 35, a guide hole 39, and the like. Has been done.

(Operation to the center position, front position and rear position by the front and rear operating tools)
The states shown in FIGS. 4 and 9 are states in which the reserve seedling stands 31, 32 and the support mechanism 45 are operated to the central position B1 (see FIG. 6).

The handle portions 38a and 38b of the front-rear operating tool 38 are operated to the downward holding position C1 (see FIG. 8) along the vertical direction, and the engaging portion 38c of the front-rear operating tool 38 is the central holding portion of the guide hole 39. It has entered 39a, and the reserve seedling stands 31, 32 and the support mechanism 45 are held at the central position B1 by the front-rear holding mechanism 61 (holding state of the front-rear holding mechanism 61).

A worker standing in a ridge on the front side of the machine body 3 or in a paddy field can have a handle portion 38a of the front / rear operation tool 38, and a worker in the driver's seat 20 has a handle portion 38b of the front / rear operation tool 38. be able to.

As shown in FIGS. 8 and 9, the operator holds the handles 38a and 38b of the front-rear operating tool 38, and releases the front-rear operating tool 38 around the axis P5, which is slightly closer to the vertical direction along the left-right direction. When operated to the position C2, the engaging portion 38c of the front-rear operating tool 38 is pulled out upward from the central holding portion 39a of the guide hole 39 (the front-rear holding mechanism 61 is released).

The operator pushes and pulls the front-rear operating tool 38 back and forth while maintaining the handles 38a and 38b of the front-rear operating tool 38 at the release position C2, whereby the spare seedling rests 31 and 32 and the support mechanism 45 are moved. As shown in FIG. 6, the position can be artificially changed in the front-rear direction from the central position B1 to the front position B2 or the rear position B3.

As shown in FIGS. 6 and 9, when the spare seedling rests 31, 32 and the support mechanism 45 are repositioned to the front position B2 (rear position B3), the support is maintained in the vertical direction. The support member 35 swings around the shaft core P3 with respect to the member 36, and the guide hole 39 swings around the shaft core P3 with respect to the engaging portion 38c of the front-rear operating tool 38.

At the front position B2, the engaging portion 38c of the front / rear operating tool 38 is located above the front holding portion 39b of the guide hole 39, and at the rear position B3, the engaging portion 38c of the front / rear operating tool 38 is behind the guide hole 39. It is located above the side holding portion 39c.

After changing the positions of the spare seedling rests 31 and 32 and the support mechanism 45 to the front position B2 (rear position B3), the operator operates the front-rear operating tool 38 to the holding position C1 and engages the front-rear operating tool 38. The portion 38c is inserted into the front holding portion 39b (rear holding portion 39c) of the guide hole 39. As a result, the spare seedling rests 31, 32 and the support mechanism 45 are held by the front-rear holding mechanism 61 at the front position B2 (rear side position B3) shown in FIG. 6 (holding state of the front-rear holding mechanism 61).

When the operator changes the positions of the spare seedling rests 31, 32 and the support mechanism 45 from the front position B2 to the center position B1 or the rear position B3, and from the rear position B3 to the center position B1 or the front position B2, the operator Has the handles 38a and 38b of the front-rear operating tool 38, and may operate the front-rear operating tool 38 to the release position C2 to perform the same operation as described above.

Since the posture of the release position C2 of the handle portions 38a and 38b of the front-rear operation tool 38 and the position change operation of the spare seedling rests 31 and 32 and the support mechanism 45 in the front-rear direction intersect with each other, the operator moves back and forth. It is easy to apply an operating force to the handles 38a and 38b of the operating tool 38, and it is easy to change the positions of the spare seedling rests 31 and 32 and the support mechanism 45 in the front-rear direction.

When the operator changes the positions of the spare seedling rests 31, 32 and the support mechanism 45 from the front position B2 to the rear position B3 (from the rear position B3 to the front position B2), the front-back operation is performed at the center position B1 in the middle. The restraining portion 39d of the guide hole 39 hits the engaging portion 38c of the tool 38, the engaging portion 38c of the front-rear operating tool 38 is guided to the central holding portion 39a of the guide hole 39, and the front-rear operating tool 38 is moved to the holding position C1. Be manipulated.

As a result, the spare seedling pedestals 31 and 32 and the support mechanism 45 are held at the central position B1 on the way, and the operator operates the front-rear operating tool 38 again at the release position C2 to operate the spare seedling pedestal 38. The positions of 31, 32 and the support mechanism 45 are changed from the central position B1 to the rear position B3 (front position B2).

(Structure of a support mechanism that supports the front and rear support mechanism so that the position of the spare seedling stand can be changed to the first state and the second state)
As shown in FIGS. 4 and 7, the arm portion 36b is connected to the support member 36 and extends to the rear side, and the fulcrum shaft 36c is outwardly connected to the end portion of the arm portion 36b. ..

A round pipe-shaped first support link 41 and a second support link 42 are provided. The central portion of the first support link 41 in the longitudinal direction is supported by the fulcrum shaft 33a of the support frame 33 so as to be swingable around the axis P3 in the left-right direction. The central portion of the second support link 42 in the longitudinal direction is supported by the fulcrum shaft 36c of the support member 36 so as to be swingable around the axis P6 (corresponding to the second axis) in the left-right direction.

As shown in FIGS. 2, 3, 4, and 8, square pipe-shaped seedling pedestal frames 51 and 52 are provided.
One end of the first support link 41 can swing around the axis P8 in the left-right direction on the front part of the seedling stand frame 51 (the part behind the front end portion 31a of the spare seedling stand 31). It is connected. One end of the second support link 42 is connected to the front-rear intermediate portion of the seedling pedestal frame 51 (the front-rear center portion of the spare seedling pedestal 31) so as to be swingable around the axis P7 in the left-right direction. ..

The other end of the first support link 41 is connected to the rear part of the seedling stand frame 52 (the part from the front-rear center portion to the rear side of the spare seedling stand 32) so as to be swingable around the axis P10 in the left-right direction. Has been done. The other end of the second support link 42 is connected to the rear portion of the seedling stand frame 52 (rear end portion 32b of the spare seedling stand 32) so as to be swingable around the axis P9 in the left-right direction.

As shown in FIGS. 1, 2 and 3, the preliminary seedling pedestals 31 and 32 are integrally formed of synthetic resin, and the arch-shaped seedling stopping members 43 and 44 are in front of the preliminary seedling pedestals 31 and 32. Detachable parts are provided on the portion and the rear portion.

As shown in FIGS. 3 and 4, brackets 51a and 52a are provided on the front and rear portions of the seedling stand frames 51 and 52, and around the axial cores P11 and P12 in the front-rear direction of the brackets 51a and 52a. The spare seedling rests 31 and 32 are supported so as to be able to change their postures to a sideways use posture (see FIGS. 1, 2 and 3) and an upright storage posture.

A holding member 47 in which a round bar-shaped elastic material is bent is provided on a bracket 51a of a seedling stand frame 51. The pressing member 47 can be operated by the toggle function in the standing release posture (see FIGS. 3 and 4) and the pressing posture pressed by the preliminary seedling pedestal 31 in the usage posture.

When an empty seedling box (not shown) or a seedling rake plate (not shown) is placed on the preliminary seedling pedestal 31 in the usage posture, the operator operates the holding member 47 in the holding posture to hold the holding member. By 47, the empty seedling box and the seedling rake board are held down so as not to be blown by the wind.

As described above, the support mechanism 45 provided with the first support link 41, the second support link 42, the seedling stand frames 51, 52 and the like is provided.
As described later (operation of the preliminary seedling pedestal and the support mechanism to the first state and the second state by the operating tool), the preliminary seedling pedestals 31 and 32 are arranged at predetermined intervals in the vertical direction. The support mechanism 45 allows the support member 36 and the support frame 33 to be repositioned to the first state A1 (see FIG. 4) and the second state A2 (see FIG. 5) arranged in a row in the front-rear direction. It is supported.

(Positional relationship between the first support link and the second support link in the support mechanism)
As shown in FIGS. 4, 6 and 7, the shaft core P3 (fulcrum shaft 33a of the support frame 33) has an upper spare seedling pedestal 31 and a lower preliminary seedling pedestal in the first state A1 in a side view. It is arranged between the 32 and the virtual line passing through the center of the front and rear of the preliminary seedling pedestals 31 and 32 in the first state A1 in the vertical direction.

The shaft core P6 (fulcrum shaft 36c of the support member 36) is arranged between the upper preliminary seedling pedestal 31 and the lower preliminary seedling pedestal 32 in the first state A1 in the side view, and is a shaft. It is arranged on the rear side of the core P3.

A portion extending diagonally upward from the axis P3 of the first support link 41 in the first state A1 and a portion rearward from the front end portion 31a of the upper spare seedling pedestal 31 in the first state A1. Is oscillatingly connected around the shaft core P8.

In the portion extending diagonally downward from the axis P3 of the first support link 41 in the first state A1, rearward from the front-rear center of the lower spare seedling pedestal 32 in the first state A1. The side portion is swingably connected around the shaft core P10.

In the portion extending diagonally upward from the shaft core P6 of the second support link 42 in the first state A1, the front-rear center portion of the upper spare seedling pedestal 31 in the first state A1 is the shaft core P7. It is swayably connected around.

The rear end portion 32b of the lower spare seedling pedestal 32 in the first state A1 is located in a portion extending diagonally downward from the axis P6 of the second support link 42 in the first state A1. , Is swingably connected around the shaft core P9.

In the side view, the first support link 41 is arranged near the central portion of the preliminary seedling pedestals 31 and 32 in the first state A1 in the anteroposterior direction, and the second support link 42 is behind the first support link 41. In the first state A1 of the spare seedling pedestals 31 and 32, the first support link 41 and the second support link 42 are arranged on the rear side with respect to the spare seedling pedestals 31 and 32.

As a result, in the first state A1 of the preliminary seedling pedestals 31 and 32, the first support link 41 and the first support link 41 and the front portion of the lower preliminary seedling pedestal 32 are placed between the front portion of the upper preliminary seedling pedestal 31 and the front portion of the lower preliminary seedling pedestal 32. There is a region E1 in which the second support link 42 does not exist.

In the first state A1 of the reserve seedling pedestals 31 and 32, the first support link 41 and the second support link 42 extend diagonally upward from the shaft core P3 and the shaft core P6 to the diagonally upper side on the rear side. The region E1 in which the first support link 41 and the second support link 42 do not exist between the front part of the upper spare seedling stand 31 and the front part of the lower spare seedling stand 32 , The vicinity of the lower reserve seedling stand 32 becomes large.

As shown in FIG. 2, when the operator of the driver's seat 20 visually looks diagonally forward to the right and left in the first state A1 of the spare seedling pedestals 31 and 32 (see line of sight F1), the upper spare seedling pedestal is placed. When visually observing the front through between 31 and the lower reserve seedling stand 32, the first support link 41 and the second support link 42 rarely limit the view (line of sight F1).

In the area E1 where the first support link 41 and the second support link 42 do not exist, when the operator of the driver's seat 20 visually observes the diagonally lower right and left diagonally forward and visually (see the line of sight F1). By visually observing the vicinity of the lower reserve seedling stand 32, the first support link 41 and the second support link 42 are less likely to limit the view (line of sight F1).

(Structure of operating tool, holding mechanism and holding tool for operating the reserve seedling stand in the first and second states)
As shown in FIGS. 2, 4 and 5, at the rear part of the right and left seedling pedestal frame 51 (the rear part of the connection portion between the spare seedling pedestal 31 and the second support link 42 (axis core P7)). The right and left operating tools 48 are connected and extended to the rear side. As a result, the operating tool 48 is provided along the front-rear direction on the lateral portion of the spare seedling stand 31 on the left-right center side of the machine body, and the handle portion 48a of the operating tool 48 is arranged along the front-rear direction. There is.

Holding right and left to the bracket 51b (the rear part of the connection part (axis core P7) between the spare seedling stand 31 and the second support link 42) connected to the rear part of the right and left seedling stand frame 51. The tool 49 is supported so as to be swingable up and down around the axis P13 in the left-right direction, and extends to the rear side so as to be arranged under the operating tool 48. As a result, the holder 49 is provided along the front-rear direction on the lateral portion of the spare seedling stand 31 on the left-right center side of the machine body.

The holder 49 can be operated in the vertical direction at a holding position D1 which is separated from the operating tool 48 to the lower side and a releasing position D2 which is above the holding position D1 and close to the operating tool 48. A concave first engaging portion 49a and a second engaging portion 49b are provided at the base of the holder 49. A spring 50 is attached to the bracket 51b of the seedling stand frame 51, and the holder 49 is urged to the holding position D1 by the spring 50.

As shown in FIGS. 4, 5 and 7, one side and the other side of the right and left second support links 42 sandwiching the portion (axis core P7) swingably connected to the seedling pedestal frame 51. A pin-shaped first locking portion 42a and a second locking portion 42b are provided in the portion. A pin-shaped stopper portion 36d is provided on the arm portion 36b of the support member 36.

As described above, between the second support link 42 and the holder 49, the holder 49 (first engaging portion 49a and second engaging portion 49b) and the first locking portion 42a of the second support link 42. A holding mechanism 62 having a second locking portion 42b and the like is provided.

The holding mechanism 62 sets the posture of the second support link 42 with respect to the spare seedling stand 31 as described later (operation of the spare seedling rest and the support mechanism into the first state and the second state by the operating tool). By fixing, the spare seedling pedestals 31 and 32 can be held in the first state A1 and the second state A2, and by allowing the second support link 42 to swing with respect to the spare seedling pedestal 31, the spare seedlings can be held. It is permissible to operate the mounting tables 31 and 32 to the first state A1 and the second state A2.

(Operation of the spare seedling stand and support mechanism to the first and second states by the operating tool)
The states shown in FIGS. 1 to 4 are states in which a plurality of spare seedling pedestals 31 and 32 are operated in the first state A1 arranged at predetermined intervals in the vertical direction.

In the state shown in FIG. 4, the second support link 42 hits the stopper portion 36d of the support member 36 from above, the holder 49 is operated to the holding position D1, and the first engaging portion 49a of the holder 49 is the first. 2 Engage with the first locking portion 42a of the support link 42 (the first locking portion 42a of the second support link 42 enters the first engaging portion 49a of the holder 49), and the reserve seedling stand. 31 and 32 are in the state of being held in the first state A1 (holding state of the holding mechanism 62).

When the spare seedling pedestals 31 and 32 are held in the first state A1 and the operator holds the operating tool 48 by hand, the holding tool 49 can also be held by hand. The holder 49 can be operated from the holding position D1 to the releasing position D2, and the first engaging portion 49a of the holder 49 is disengaged from the first locking portion 42a of the second support link 42 (). Release state of the holding mechanism 62).

As shown in FIGS. 4 to 5, the operator holds the operating tool 48 and the holding tool 49 at the release position D2, and pulls the operating tool 48 and the holding tool 49 at the release position D2 toward the driver's seat 20 side (rear side). When operated downward while operating, the first support link 41 and the second support link 42 swing clockwise around the axes P3 and P6 in the clockwise directions of FIGS. 4 and 5, and the upper spare seedling pedestal 31 Is repositioned to the lower side of the driver's seat 20 side (rear side), and the position of the lower spare seedling stand 32 is repositioned to the upper side of the front side.

As shown in FIG. 5, when the first support link 41 hits the stopper portion 36d of the support member 36 from above, the swing of the first support link 41 and the second support link 42 is stopped, and this state. The second locking portion 42b of the second support link 42 faces the second engaging portion 49b of the holder 49.

The state shown in FIG. 5 is the second state A2 in which a plurality of spare seedling stands 31 and 32 are arranged in a row in the front-rear direction. In the second state A2, the upper spare seedling pedestal 31 in the first state A1 is on the driver's seat 20 side (rear side), and the lower spare seedling pedestal 32 in the first state A1 is on the front side. The front end portion 31a of the mounting table 31 and the rear end portion 32b of the preliminary seedling mounting table 32 are in contact with each other.

In the state shown in FIG. 5, when the operator releases the holder 49, the holder 49 swings from the release position D2 to the holding position D1 by the spring 50, and the second engaging portion 49b of the holder 49 becomes the second. Engage with the second locking portion 42b of the support link 42 (the second locking portion 42b of the second support link 42 enters the second engaging portion 49b of the holder 49), and the reserve seedling stand 31 , 32 are held in the second state A2 (holding state of the holding mechanism 62).

In the second state A2 shown in FIG. 5, the operator operates the holder 49 from the holding position D1 to the release position D2 as described above, holds the operation tool 48 and the holder 49 of the release position D2, and has the operation tool 48. And by operating the holder 49 of the release position D2 upward while pushing it forward, the positions of the spare seedling pedestals 31 and 32 can be changed from the second state A2 to the first state A1 shown in FIG. can.

Since the posture of the handle 48a of the operation tool 48 and the moving direction (vertical direction) of the spare seedling pedestals 31 and 32 intersect, the operator applies an operation force to the handle 48a of the operation tool 48. It is easy to hang, and it becomes easy to operate the preliminary seedling pedestals 31 and 32 from the first state A1 to the second state A2 and from the second state A2 to the first state A1.

By operating the front-rear operating tool 38, the operator keeps the spare seedling pedestals 31 and 32 in the first state A1 (second state A2), while centering the spare seedling pedestals 31, 32 and the support mechanism 45. The position can be changed to the position B1, the front position B2, and the rear position B3 (see the above-mentioned (operation to the center position, the front position, and the rear position by the front-rear operating tool)).

(Positional relationship of each part in the first state of the reserve seedling stand)
As shown in FIGS. 1 to 4, in the first state A1 of the preliminary seedling pedestals 31 and 32, the positional relationship of each part is as described below.

The handle 48a and the holder 49 of the operation tool 48, and the handle 38b of the front and rear operation tool 38 are located on the side of the driver's seat 20 side (center side of the left and right sides of the machine) of the spare seedling stand 31 on the upper side in a plan view. It is provided. The handle 48a and the holder 49 of the operating tool 48, and the handle 38b of the front-rear operating tool 38 are arranged behind the front-rear support mechanism 37 (support frame 33) in a side view, and a spare seedling stand. It is arranged on the front side of the rear end portions 31b, 32b of 31, 32.

The positions of the handle 48a and the holder 49 of the operating tool 48 in the front-rear direction and the positions of the handle 38b of the front-rear operating tool 38 in the front-rear direction are arranged at substantially the same positions in the side view. The handle portion 38a of the front-rear operating tool 38 is arranged on the rear side of the front end portions 31a and 32a of the spare seedling rests 31 and 32 in a side view.

The handle portion 48a of the operation tool 48 and the holding tool 49 operated at the release position D2 are arranged above the handle portion 38b of the front-rear operation tool 38 in a side view. The handle portion 38a of the front-rear operating tool 38 is arranged between the front portion of the upper preliminary seedling pedestal 31 and the front portion of the lower preliminary seedling pedestal 32 in a side view.

The handle portion 38b of the front-rear operating tool 38 and the holding tool 49 operated at the holding position D1 are arranged between the rear portion of the upper preliminary seedling pedestal 31 and the second support link 42 in a side view. The rear portion of the front-rear operating tool 38 is arranged between the handle portion 48a of the operating tool 48 and the holding tool 49 operated at the holding position D1 in a side view.

The handle 48a, the holder 49, the front-rear operating tool 38, and the support member 36 of the operating tool 48 are arranged at positions that do not protrude above the upper end portion 31c of the spare seedling stand 31 in side view. The handle portion 48a of the tool 48 is arranged at a position not protruding below the lower end portion 31d of the preliminary seedling stand 31 in a side view.

The holder 49 operated at the holding position D1 is arranged at a position where it comes out below the lower end 31d of the preliminary seedling pedestal 31 in a side view, and the holder 49 operated at the release position D2 is on the side surface. It is visually arranged at substantially the same position as the lower end 31d of the spare seedling stand 31.

The front and rear operating tools 38 (handles 38a and 38b) are on the left and right center sides of the operating tool 48 and the holder 49 (passage side between the bonnet 24 and the spare seedling stands 31 and 32) (described above). (See (Structure of the front part of the aircraft)).
In a state where the handle portions 38a and 38b of the front-rear operating tool 38 are operated to the holding position C1 (see FIG. 8), the handle portions 38a and 38b of the front-rear operating tool 38 face downward and project to the above-mentioned passage side. do not.

With the spare seedling pedestals 31 and 32 and the support mechanism 45 operated to the central position B1 (see FIG. 6), the support frame 33 is located at the center of the front and rear of the spare seedling pedestals 31 and 32 in a side view. The spare seedling stands 31 and 32 are arranged symmetrically with the support frame 33 as the center line.

Since the seedling stopper members 43 and 44 are provided on the front and rear of the spare seedling pedestals 31 and 32, the seedlings placed on the spare seedling pedestals 31 and 32 move to the front side (rear side). It does not fall from the reserve seedling stands 31 and 32 to the front side (rear side).

(Positional relationship of each part in the second state of the reserve seedling stand)
As shown in FIG. 5, in the second state A2 of the preliminary seedling pedestals 31 and 32, the positional relationship of each part is as described below.

The rear end 31b of the right and left spare seedling pedestals 31 is arranged at substantially the same position as the driver's seat 20 in a side view.
The handle 48a and the holder 49 of the operating tool 48, and the handle 38b of the front-rear operating tool 38 are arranged behind the front-rear support mechanism 37 (support frame 33) in a side view, and a spare seedling stand. It is arranged on the front side of the rear end portion 31b of 31.

The front-rear operation tool 38 and the support member 36 are arranged at positions above the upper ends 31c and 32c of the spare seedling pedestals 31 and 32 in a side view, and the handle portions 38a and 38b of the front-rear operation tool 38 are arranged. However, from the side view, they are arranged at positions overlapping with the spare seedling pedestals 31 and 32. The operating tool 48 and the holding tool 49 are arranged on the rear side of the handle portion 38b of the front-rear operating tool 38 in a side view.

The spare seedling stand 31 on the rear side is arranged so as to be slightly lower than the spare seedling stand 32 on the front side. In this case, the worker removes the seedling stop member 43 at the front of the spare seedling stand 31 and the seedling stop member 44 at the rear of the spare seedling stand 32 from the spare seedling rests 31 and 32, or the spare seedling. Change the posture (position) so that it does not interfere with the movement of the seedlings over the pedestals 31 and 32.

With the spare seedling pedestals 31 and 32 and the support mechanism 45 operated to the central position B1 (see FIG. 6), the butt portion of the spare seedling pedestals 31 and 32 (front end of the spare seedling pedestal 31) is viewed from the side. The support frame 33 is located at the rear end portion 32b) of the portion 31a and the spare seedling stand 32), and the spare seedling rests 31 and 32 are arranged symmetrically with the support frame 33 as the center line.

In a state where the spare seedling rests 31, 32 and the support mechanism 45 are operated to the central position B1 (see FIG. 6), the holding member 47 is arranged slightly behind the support frame 33 in a side view.

As shown in FIG. 4, while the spare seedling pedestals 31, 32 and the support mechanism 45 are operated to the central position B1 (see FIG. 6), the spare seedling pedestals 31, 32 are operated to the first state A1. Then, in the side view, the pressing member 47 is arranged slightly in front of the support frame 33. As a result, in the first state A1 and the second state A2 of the preliminary seedling pedestals 31 and 32, the change in the position of the holding member 47 in the front-rear direction is small.

The positional relationship between the operating tool 48, the holding tool 49, the front-rear operating tool 38, etc. other than the above description is the same as the positional relationship described in the above-mentioned (positional relationship of each part in the first state of the preliminary seedling stand). be.

(First Different Form of Implementation of the Invention)
Spare seedling stands 31, 32 may be supported as described below.
As shown in FIG. 10, the spare seedling pedestals 31 and 32 are supported by the front-rear support mechanism 37 and the support mechanism 45 shown in FIGS. 1 to 9.

The support frame 58 is connected to the upper part of the support member 36 and extends to the front side, is bent in an arc shape in a side view, and extends to the upper side. In the support frame 58, the upper position of the support member 36 at a predetermined distance is extended to the rear side. A spare seedling stand 59 is attached to the support frame 58.
The spare seedling pedestal 59 is arranged above the preliminary seedling pedestal 31 at a predetermined interval, and is arranged slightly closer to the left and right center side of the machine body than the preliminary seedling pedestal 31 and 32 in the rear view and the plan view.

As shown in FIG. 11, the operating tool 48 is connected to the rear portion of the seedling stand frame 51 and extended upward, and the handle portion 48a of the operating tool 48 extends rearward. The handle portion 48a of the operating tool 48 is arranged at a position where it protrudes above the upper end portion 31c of the preliminary seedling pedestal 31 in the side view, and the preliminary seedling pedestal 31 and the preliminary seedling pedestal 59 are arranged in the side view. It is placed in between.

The holder 49 is supported so as to be swingable back and forth around the axis P14 in the left-right direction at the rear of the seedling stand frame 51, and a concave first portion is formed in the downward extending portion of the holder 49. An engaging portion 49a and a second engaging portion 49b are provided. The holder 49 is arranged on the front side of the operating tool 48, and is arranged at a position where it protrudes above the upper end portion 31c of the preliminary seedling pedestal 31 in a side view.

The holder 49 can be operated in the vertical direction at the upper holding position D1 and the lower releasing position D2. A toggle spring 60 is attached over the holder 49 and the seedling rest frame 51, and the toggle spring 60 urges and holds the holder 49 at the holding position D1 and the releasing position D2.

When the operator operates the holder 49 to the release position D2, the first engaging portion 49a and the second engaging portion 49b of the holder 49 become the first locking portions 42a and the second of the second support link 42. It is disengaged from the locking portion 42b, and the holder 49 is held at the release position D2 by the toggle spring 60 (a state in which the holding mechanism 62 is maintained in the release state). The operator can operate the spare seedling pedestals 31 and 32 in the first state A1 and the second state A2 by holding the handle portion 48a of the operating tool 48 without holding the holding tool 49.

As shown in FIG. 11, while the spare seedling pedestals 31 and 32 are operated in the second state A2, the holder 49 is operated (held) in the release position D2, and the spare seedling pedestals 31 and 32 are in the second state. When operated from the second state A2 to the first state A1, the second locking portion 42b of the second support link 42 moves to the upper side of FIG. 11 while the second support link 42 swings around the axis P7. Then, it hits the upper part of the holder 49. As a result, the holder 49 is swung around the axis P14, and the toggle spring 60 automatically operates the holder 49 from the release position D2 to the holding position D1.

When the spare seedling rests 31 and 32 are operated in the first state A1, the first engaging portion 49a of the holder 49 engages with the first locking portion 42a of the second support link 42 (holding tool). The first locking portion 42a of the second support link 42 is inserted into the first engaging portion 49a of the 49), and the spare seedling pedestals 31 and 32 are held in the first state A1 (holding state of the holding mechanism 62). ).

While the spare seedling pedestals 31 and 32 are operated to the first state A1, the holder 49 is operated (held) to the release position D2, and the spare seedling pedestals 31 and 32 are moved from the first state A1 to the second state. When operated by A2, the second support link 42 swings around the axis P7, and the second locking portion 42b of the second support link 42 hits the upper part of the holder 49. As a result, the holder 49 is swung around the axis P14, and the toggle spring 60 automatically operates the holder 49 from the release position D2 to the holding position D1.

When the spare seedling pedestals 31 and 32 are operated in the second state A2, the second engaging portion 49b of the holder 49 engages with the second locking portion 42b of the second support link 42 (holding tool). The second locking portion 42b of the second support link 42 enters the second engaging portion 49b of the 49), and the spare seedling pedestals 31 and 32 are held in the second state A2 (holding state of the holding mechanism 62). ).

(Second alternative form of carrying out the invention)
As shown in FIG. 12, in the support mechanism 45, the first support link 41 and the second support link 42 may be arranged upside down in a side view.

As shown in FIG. 12, in the portion extending diagonally upward from the axis P3 of the first support link 41 in the first state A1, the upper spare seedling pedestal 31 in the first state A1 A portion on the front side from the rear end portion 31b is swingably connected around the shaft core P8.

In the portion extending diagonally downward from the axis P3 of the first support link 41 in the first state A1, from the front end portion 32a of the lower spare seedling pedestal 32 in the first state A1 to the rear. The side portion is swingably connected around the shaft core P10.

The rear end portion 31b of the upper spare seedling pedestal 31 in the first state A1 extends diagonally upward from the axis P6 of the second support link 42 in the first state A1. It is swingably connected around the core P7.

In the portion extending diagonally downward from the shaft core P6 of the second support link 42 in the first state A1, the front-rear center portion of the lower spare seedling pedestal 32 in the first state A1 is the shaft. It is swingably connected around the core P9.

When the spare seedling pedestals 31 and 32 are operated from the first state A1 to the second state A2, the upper spare seedling pedestal 31 in the first state A1 becomes the front side, and the lower reserve in the first state A1. The seedling stand 32 is on the driver's seat 20 side (rear side), and the rear end portion 31b of the spare seedling stand 31 and the front end portion 32a of the spare seedling stand 32 are in contact with each other.
In this configuration, the operating tool 48, the holding tool 49, and the holding mechanism 62 may be provided on the spare seedling stand 32 (seedling stand frame 52).

(Third alternative form of carrying out the invention)
The support frame 58 and the preliminary seedling pedestal 59 shown in FIG. 10 of the above-mentioned (first alternative embodiment of the invention) are added to the configurations shown in FIGS. 1 to 9 and (second alternative embodiment of the invention). You may.

The spare seedling rests 31, 32 and the support mechanism 45 may be configured to be repositionable to a number of positions in addition to the central position B1, the front position B2 and the rear position B3.
The operating tool 48 and the holding tool 49 may be directly attached to the spare seedling pedestals 31 and 32.
The front-rear operating tool 38 may not be provided with a portion extending forward from the support member 36 and a handle portion 38a.
The configurations shown in FIGS. 1 to 9 and the configurations shown in FIGS. 10 to 12 may be applied to the three or more spare seedling pedestals 31 and 32.

INDUSTRIAL APPLICABILITY The present invention can be applied to a reserve seedling stand in a passenger-type rice transplanter.

3 Aircraft 20 Driver's seat 31 Spare seedling stand 32 Spare seedling stand 33 Support frame 41 1st support link 42 2nd support link 45 Support mechanism 48 Operator 49 Holder 62 Holding mechanism A1 1st state A2 2nd state P3 1st 1 Axial core P6 2nd Axial core P7 Axial core P8 Axial core P9 Axial core P10 Axial core

Claims (5)

Support frames provided on the right and left sides of the front of the aircraft with a driver's seat,
The spare seedlings are placed in the first state in which a plurality of spare seedling stands are arranged at predetermined intervals in the vertical direction, and in the second state in which the plurality of spare seedling stands are arranged in a row in the front-rear direction. It is equipped with a support mechanism that supports the support frame so that the position of the mount can be changed.
To the support mechanism
In the side view, it is arranged between the upper spare seedling pedestal in the first state and the lower spare seedling pedestal, and the front-rear center portion of the preliminary seedling pedestal in the first state. Around the first axis in the left-right direction, which is arranged on a virtual line passing in the vertical direction, a first support link swingably supported by the support frame, and
In the lateral view, it is arranged between the upper spare seedling resting table and the lower spare seedling resting table in the first state, and is arranged on the rear side of the first axis core in the left-right direction. A second support link that is swingably supported by the support frame is provided around the second axis.
In the portion of the first support link extending diagonally upward from the first axis in the first state, the upper side of the spare seedling pedestal in the first state swings around the axis in the left-right direction. The spare seedling pedestal on the lower side in the first state is movably connected to the portion of the first support link in the first state that extends diagonally downward from the first axis. Is swayably connected around the axis in the left-right direction.
In the portion of the second support link extending diagonally upward from the second axis of the second support link in the first state, the upper side of the spare seedling pedestal in the first state sways around the axis in the left-right direction. The spare seedling pedestal on the lower side in the first state is movably connected to a portion of the second support link in the first state that extends diagonally downward from the second axis. Is a passenger-type rice transplanter that is swingably connected around the axis in the left-right direction. In the portion of the first support link extending diagonally upward from the first axis in the first state, the upper side of the spare seedling pedestal in the first state is around the axis in the left-right direction. In a portion swingably connected to the first support link in the first state and extending diagonally downward from the first axis to the rear side, the lower side in the first state. The spare seedling pedestal is oscillatingly connected around the axis in the left-right direction.
In the portion of the second support link extending diagonally upward from the second shaft core in the first state, the upper side of the spare seedling pedestal in the first state is around the shaft core in the left-right direction. In a portion swingably connected to the second support link in the first state and extending diagonally downward from the second axis to the rear side, the lower side in the first state. The passenger-type rice transplanter according to claim 1, wherein the spare seedling stand is oscillatingly connected around the axis in the left-right direction. An operating tool for artificially operating the preliminary seedling stand in the first state and the second state is provided .
The passenger according to claim 1 or 2, wherein the operating tool is located behind the connection portion between the spare seedling pedestal on the upper side in the first state and the second support link in the first state. Rice transplanter. By fixing the posture of the second support link with respect to the spare seedling pedestal, the spare seedling pedestal can be held in the first state and the second state, and the spare seedling pedestal of the second support link can be placed. Any one of claims 1 to 3 provided with a holding mechanism capable of allowing the spare seedling pedestal to operate in the first state and the second state by allowing the table to swing. The passenger-type rice transplanter described in the section. A holder for artificially operating the holding mechanism is provided .
The passenger-type rice transplanter according to claim 4, wherein the holder is located behind the connection portion between the spare seedling pedestal on the upper side in the first state and the second support link in the first state. Machine.

Images