CN104429244B - Seeding transplant machine - Google Patents

Abstract

A kind of seeding transplant machine, mobile body (T) have Seedling cultivation device (U) and Seedling feedway (K), mobile body (T) is provided with electromotor (E) and stand (7) in the front portion of change speed gear box (M), there is main frame (8) from change speed gear box (M) is the most extended, have control crank (H) in the upper connection of this main frame (8).Front-wheel (40A) is had by front-wheel supporting arm (67) suspension, pair of right and left anterior angle axle (68) that this front-wheel supporting arm (67) props up with pivot on stand (7) is connected, having trailing wheel (41A) by rear wheel drive case (62) suspension, this rear wheel drive case (62) pivot Zhi Yu is located at the pair of right and left axle box (59) on change speed gear box (M).Left and right each anterior angle axle (68) and axle box (59) relatively rotate freely chimeric have before and after's supporting mass (72) before and after, cross over should before and after supporting mass (72) and main frame (8) connect foot (123F, 123R) before and after supporting parts (123), left and right supporting parts (123) is provided with the preliminary seedling platform (Y) of placement Seedling (N).Use the present invention, the supporting parts that preliminary seedling platform and front and back wheel support mutually can be strengthened.

Description

Seedling transplanting machine

technical field

The invention relates to a seedling transplanting machine for transplanting tobacco seedlings, lettuce seedlings and other seedlings.

Background technique

As disclosed in Patent Document 1, the seedling transplanting machine has: a mobile body that can move across the ridge; A seedling planting device that moves up and down and protrudes into a ridge to form a hole for planting seedlings while planting seedlings; a seedling supply device that is arranged above the seedling planting device and supplies seedlings to the raised position. ; and a preparatory seedling placement platform, the preparatory seedling placement platform is configured above the hood for placing the seedlings to be planted.

And, the said preparatory seedling placing platform is supported by a preparatory seedling support reinforcing plate fixed on the mobile body and two preparatory seedling platform pillars, and said two preparatory seedling platform pillars support the frame by means of the longer preparatory seedling pillars in the left and right directions. set up.

In addition, the seedling supply device has: a rotatable supply turntable, the supply turntable has eight supply cups with openings at the upper end and lower end, and the eight supply cups are fixedly arranged in a ring shape; the approximately C-shaped supply cup The opening and closing guide; and the rotary drive mechanism for counterclockwise rotation of the supply carousel, etc., are fixedly arranged in the central part of the supply carousel, and the rotation force for counterclockwise rotation of the supply carousel is fixedly arranged by the rotational force from the rotary drive mechanism. shaft, the rotating shaft is driven by a rotational force transmission member through a pair of bevel gears and a pair of spur gears.

Patent Document 1: Japanese Patent Laid-Open No. 2013-121318

In the above-mentioned Patent Document 1, there is no support structure for strengthening the suspension of the front wheels and rear wheels constituting the mobile body, and the preliminary seedling placing platform can play the function of placing the seedlings to be planted, but the supporting preliminary seedling placing platform The mechanism is only supported by the mobile body, and it becomes difficult to reinforce other structures.

In the above-mentioned Patent Document 1, since the supply turntable (turntable) is fixedly disposed on the rotation axis (vertical axis), the supply cup (seedling supply tool) on the supply turntable must be moved to the position relative to the seedling planting tool. Proper position, then need to adjust the meshing position of a pair of helical gears or spur gears, or adjust the rotation phase of the rotating force transmission part, the phase adjustment of the supply cup is both difficult and cumbersome.

Contents of the invention

The problem to be solved by the invention

An object of the present invention is to provide a seedling transplanting machine capable of solving the above-mentioned problems in the prior art.

The object of the present invention is to provide a seedling transplanting machine in which the supporting members for the preparation seedling stand and the front and rear wheels can be mutually reinforced.

An object of the present invention is to provide a seedling transplanting machine capable of simply and easily adjusting the position of a seedling supply tool with respect to a seedling planting tool.

means to solve the problem

Specific embodiments of the present invention to achieve the above object are as follows.

The seedling transplanting machine of the 1st embodiment has: a mobile body, which can move across the ridge; Protruding into the ridge by moving up and down, planting seedlings while forming holes for seedling planting; and a seedling supply device, the seedling supply device is arranged above the seedling planting device, and supplies seedlings to the seedling planting equipment at the raised position,

The mobile body is provided with an engine and a platform at the front of the gearbox, and a main frame is extended from the gearbox to the rear, and a joystick is connected to the main frame.

The front wheels are suspended by the front wheel support arms connected with the left and right pair of front angle shafts, the left and right front angle shafts are pivoted on the platform, and the rear wheels are pivoted on the left and right axle boxes. The transmission box suspension has rear wheels, and the left and right axle boxes are arranged on the transmission box.

The front portion of the left front and rear support body is relatively rotatably fitted to the left front corner shaft, and the left front and rear support body is relatively rotatably fitted to the left axle box. In the rear part, the front part of the right front and rear support body is relatively rotatably fitted on the right front angle shaft, and the right front and rear support body is relatively rotatably fitted on the right axle box. At the rear of the support body, a left side support member is bridged between the left front and rear support body and the main frame. The front foot of the left side support member is connected to the left side front and rear support body. The rear foot part of the right side is connected with the main frame, and the right side support part is erected between the right side front and rear support body and the main frame, and the front foot part of the right side support part is connected with the right side front and rear support body, and the right side The rear foot portion of the supporting part is connected with the main frame, and a preparatory seedling platform for placing seedlings is installed on the left and right supporting parts.

In the seedling transplanting machine according to the second embodiment, the preliminary seedling stand has a frame connecting left and right supporting members and a bottom plate, and a large number of holes for drainage are formed on the bottom plate.

In the seedling transplanting machine according to the third embodiment, the preliminary seedling stand protrudes in the left-right direction from the mobile body above the hood covering the engine, and takes a posture inclined upward from the rear to the front.

In the seedling transplanting machine according to the fourth embodiment, each of the left and right rear wheel transmission boxes has: a base box connected to the axle box and supporting the top shaft; a top box supporting the wheel shaft of the rear wheel; The base case, the top case, and the middle case that accommodates the transmission unit that transmits power from the top end to the wheel axle.

In the seedling transplanting machine according to the fifth embodiment, the seedling planting equipment at the rear position of the above-mentioned preliminary seedling stand is provided with vibration applying means capable of imparting vibration for soil dropping when raised.

In the seedling transplanting machine according to the sixth embodiment, a buffer member is provided on the front portion of the stand, and a rope hook for rope hooking is provided on the buffer member.

The seedling transplanting machine according to the seventh embodiment is provided with a power transmission mechanism in the gearbox. The lower part of the planting clutch lever is supported by the planting clutch lever. The planting clutch lever performs the switching operation of the power transmission mechanism by operating the linkage part. The positioning unit is provided with an operation panel substantially directly above the positioning unit, and the operation panel is installed on the joystick.

In the seedling transplanting machine according to the eighth embodiment, the seedling planting tool moves up and down periodically with the rotation of the planting drive shaft,

The seedling supply device has: an installation body located on the upper part of the longitudinal axis; a turntable placed on the installation body; a plurality of seedling supply devices arranged around the turntable, and each seedling supply device can accommodate seedlings and make the seedlings falling; and synchronously driving the supply driving mechanism of the vertical axis with the up and down movement of the seedling planting utensil,

A phase adjustment unit for adjusting a phase in a rotation direction of the turntable is provided between the mounting body and the turntable.

In the seedling transplanting machine according to the ninth embodiment, the phase adjustment unit has: a plurality of arc holes formed on the turntable along the circumferential direction, and each arc hole is formed in an arc shape with the longitudinal axis as the center of curvature; The circular arc holes are screwed with the mounting body.

In the seedling transplanting machine according to the tenth embodiment, the supply driving mechanism has: a worm wheel provided on the vertical axis; a worm meshed with the worm wheel; a horizontal shaft provided with the worm; The supply linkage unit of the horizontal axis.

The seedling transplanting machine according to the eleventh embodiment includes a supply cup for storing the seedlings; an openable and closable gate for placing the seedlings on the bottom of the supply cup; Turn around from the seedling supply position and close the gate from the open position before coming to the seedling supply position again, and release the closure at the seedling supply position,

The gate closing member has: a midway closing portion having an arc shape approximately concentric with the longitudinal axis, and in which the gate is in a closed position from the front of the seedling feeding position to just before reaching the seedling feeding position; the starting end closing portion , the starting end closing part is inclined upward from the front of the seedling supply position and is connected with the midway closing part, and the gate is closed from the open position; the opening part is connected with the starting end closing part and is located at the seedling supply position to open the front side of the gate of the posture; and the connecting portion, which connects the opening portion with the halfway closing portion.

In the seedling transplanting machine according to the twelfth embodiment, the seedling supply tool includes urging means for urging the shutter in an opening direction.

In the seedling transplanting machine according to the thirteenth embodiment, the supply cup of the above-mentioned seedling supply tool has: a supply outer cup mounted on a turntable; ,

A fitting portion fitted on the upper edge of the supply outer cup is formed on the outer peripheral surface of the upper and lower intermediate portions of the supply inner cup.

The effect of the invention

According to the present invention, it is possible to mutually reinforce the supporting member for the preliminary seedling platform and the front and rear wheels.

That is, in the invention of the first embodiment, since the front and rear parts of the front and rear support bodies that are relatively rotatable are fitted on the front corner axle of the suspension front wheel and the axle box of the suspension rear wheel, the front and rear support bodies and the main frame are straddled. The front and rear feet of the supporting parts are closely connected, and the preparatory seedling platforms for placing seedlings are installed on the left and right supporting parts. The preliminary seedling platform for placing the seedlings is installed on the supporting member, whereby the preliminary seedling platform and the left and right supporting members can be mutually reinforced.

In the invention of the second embodiment, since many holes for drainage are formed on the bottom plate of the preliminary seedling stand, the water falling from the seedlings can be drained normally.

In the invention of the third embodiment, since the preliminary seedling stand protrudes from the mobile body in the left-right direction and is inclined upward from the rear to the front, the follower can easily take out the seedlings from the reserve seedling stand.

In the fourth embodiment of the invention, the rear wheel drive box is composed of three parts: the base box, the top box, and the middle box. wheel gearbox.

In the invention of the fifth embodiment, since the vibration applying means is provided on the seedling planting tool, vibration can be given to the seedling planting tool to drop the attached soil.

In the invention of the sixth embodiment, since a rope hook for hooking a rope is provided on the buffer member provided at the front portion of the stand, it can be hooked and fixed by the rope during vehicle-mounted transportation.

In the invention of the seventh embodiment, since the planting clutch lever for switching the power transmission mechanism in the gearbox is supported by the rear part of the main frame, a pair of planting clutches is provided between the lower part of the planting clutch lever and the main frame. Therefore, the switching operation of the planting clutch lever can be performed correctly. Since the operation panel installed on the joystick is arranged approximately directly above the positioning unit, the planting clutch lever becomes The roughly vertical posture makes the turning operation easy.

According to the invention of the eighth embodiment, by adjusting the phase of the rotation direction of the turntable with respect to the mounting body fixed on the vertical axis, the position of the seedling supply tool relative to the seedling planting tool can be adjusted simply and easily.

That is, in the invention of the eighth embodiment, since the phase adjustment means is provided between the mounting body provided on the upper part of the vertical axis and the turntable placed on the mounting body, the phase of the rotation direction of the turntable can be adjusted by the phase adjustment means. , the position of the seedling supply device on the turntable relative to the seedling planting device can be adjusted simply and easily.

In the invention of the ninth embodiment, since the phase adjustment means has a plurality of arc holes in the circumferential direction of the turntable and fasteners screwed into the mounting body, the structure for adjusting the position of the seedling supply tool can be easily constituted. .

In the invention of the tenth embodiment, since the supply driving mechanism has: a worm wheel provided on the vertical axis; rotates smoothly.

In the invention of the eleventh embodiment, the shutter closing member closes the openable and closable shutter that carries the seedlings at the bottom of the supply cup from the open position, and releases the closure at the seedling supply position. In addition to the closing portion and the opening portion, there is a connecting portion connecting the starting end closing portion and the opening portion. Therefore, the shutter closing member can have improved shape retention and strength compared with the case where both ends are free ends.

In the invention of the twelfth embodiment, since the seedling supply tool has the urging means for urging the gate in the opening direction, the gate can be opened quickly and reliably.

According to the invention of the thirteenth embodiment, since the outer peripheral surface of the upper and lower middle part of the supply inner cup of the supply cup is formed with a fitting part that fits on the upper edge of the supply outer cup, the supply inner cup can be attached to the supply outer cup in a correct posture. on the cup.

Description of drawings

Fig. 1 is a perspective view showing the whole of a seedling transplanting machine according to an embodiment of the present invention.

Figure 2 is a side view of the whole.

Fig. 3 is a plan view of the whole.

Fig. 4 is a rear view of the mobile body.

Fig. 5 is a side view of the front part of the mobile body.

Fig. 6 is a plan view of the front part of the mobile body.

Fig. 7 is a side view of a seedling planting device and a seedling supply device.

Fig. 8 is a plan view of a seedling planting device and a seedling supply device.

Fig. 9 is a side view of the seedling supply device.

Fig. 10 is a plan view of the seedling supply device.

Fig. 11 is a side view of main parts of the seedling planting device.

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

Fig. 13 is a side view of the enlarged hole excavating mechanism and the planting depth adjusting mechanism.

Fig. 14 is a top view of the enlarged hole excavating mechanism and the planting depth adjusting mechanism.

Fig. 15 is a rear view of the enlarged hole excavating mechanism and the planting depth adjusting mechanism.

Fig. 16 is a side view of main parts of the enlarged hole excavating mechanism.

Fig. 17 is an explanatory view showing the second half of the hole digging operation of the enlarged hole digging mechanism.

Fig. 18 is an explanatory view showing immediately after the hole digging operation of the enlarged hole digging mechanism starts.

Fig. 19 is an explanatory view showing the middle of the hole digging operation of the enlarged hole digging mechanism.

Fig. 20 is an explanatory diagram showing a seedling planting operation in a hole digging operation.

Fig. 21 is a side view showing the front and rear brackets and the preliminary seedling stand.

Fig. 22 is a plan view showing the front part of the mobile body and the prepared seedling stand.

Fig. 23 is a front view showing a front bracket and a cushioning member.

Symbol Description

1 seedling transplanter

7 benches

8 main frame

10 vertical axis

20 mounting body

21 Phase adjustment unit

30 plant drive shaft

34 serving cups

40A front wheel

59 axle box

62 rear wheel drive box

67 Front wheel support arm

68 front angle shaft

72 front and rear support body

122 Operation panel

123 Support parts

123F, 123R front and rear feet

130 enlarged hole digging mechanism

131 Hoe parts

131L, 131R left and right wings

131S Lifting Department

132 support rod

H Joystick

J circle trajectory

K seedling supply device

K1 seedling supply equipment

K2 supply drive mechanism

L track

M gearbox

N pot seedlings

N seedlings

R ridge

S turntable

T mobile body

T1 main body

U1 seedling planting equipment

W1 hole for seedling planting

W2 enlarged hole

Y preparation seedling platform

detailed description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 to 4, a walk-type seedling transplanting machine 1 is illustrated, which moves in the longitudinal direction across the ridge R, and plants unit shaped seedlings and soil block seedlings called tobacco and vegetables at predetermined intervals. And seedlings such as pot seedlings N.

This seedling transplanting machine 1 generally has: a mobile body T that can travel; a seedling planting device U installed at the rear of the mobile body T; The supply device K; the enlarged hole excavating mechanism 130 which forms the enlarged hole W2 on the ridge R;

The mobile body T has a frame 7 protruding forward from the transmission M, an engine (drive source) E is mounted on the top of the frame 7, and a main frame 8 is mounted on the rear of the transmission M. These parts constitute the machine body T. The main body T1 has a joystick H connected to the rear of the main body T1, that is, the rear end of the main frame 8, and the front traveling device 40 with the front wheels 40A and the rear wheel 41A are suspended by the gearbox M and the stand 7. Traveling device 41.

The front traveling device 40 may also be crawler type, and has a pair of front wheels 40A of left and right tire wheels rolling in the ditch between ridges, and the left and right positions relative to the mobile body T can be adjusted freely. The rear traveling device 41 may also be of crawler type, having a pair of left and right rear wheels 41A of tire wheels rolling in the groove between the ridges, and the left and right positions relative to the mobile body T can be adjusted freely.

In FIGS. 1 to 8, 21, and 22, the gearbox M is input with power from the engine E through a belt transmission unit 52, and the power is shifted through a power transmission mechanism 53 having a clutch and a speed change mechanism, and the transmission output shaft 54 output traveling power, and output working power from transplant output shaft 55. The power transmission mechanism 53 can switch the forward and backward movement of the mobile body T and the operation of the seedling planting device U.

The travel output shaft 54 protrudes to the left and right through the gearbox M, and the telescopic transmission shaft 57 is connected to the left and right ends, and the top end shaft 58 is directly connected to the top end of the telescopic transmission shaft 57. The inside of the axle box 59 is penetrated and supported.

The axle box 59 has: a mounting member 61 fixed to the side surface of the transmission M; an outer cylinder case 59A supported by the mounting member 61; and an inner cylinder case 59B inserted into the outer cylinder case 59A.

In Figs. 3-6, 22, the inside of the installation part 61 is inserted with the travel output shaft 54, and the outside supports the outer cylinder casing 59A which can rotate freely around the travel output shaft 54, and the rear linkage is provided on the outer cylinder casing 59A. Arm 66. The inner cylinder case 59B has a square cylinder shape, and is inserted into the outer cylinder case 59A in a state where it is integrally rotatable and its position in the left-right direction is adjustable.

The upper part of the rear wheel transmission case 62 is connected to the outer end of the inner cylinder case 59B in the left and right direction, the above-mentioned front end shaft 58 is supported on the upper part of the rear wheel transmission case 62, and the rear wheel 41A is supported on the lower part. The wheel shaft 63 is provided with a chain transmission unit 64 between the tip shaft 58 and the wheel shaft 63 .

The power from the travel output shaft 54 is transmitted to the rear wheel 41A through the telescopic transmission shaft 57 , the tip shaft 58 , the chain transmission unit 64 and the wheel shaft 63 . In addition, the position of the rear wheel 41A can be changed in the left-right direction with respect to the wheel shaft 63 .

The left and right rear wheel drive boxes 62 are cast and have: a base box 62A connected to the axle box 59 and supporting the top shaft 58; a top box 62B supporting the wheel shaft 63 of the rear wheel 41A; and The middle case 62C connects the base case 62A and the tip case 62B and accommodates a transmission unit 64 that transmits power from the tip shaft 58 to the wheel shaft 63 .

The mobile body T may be manufactured in which the front traveling device 40 and the rear traveling device 41 have different leg lengths. In this case, the rear wheel transmission case 62 of the rear traveling device 41 only needs to connect the middle case 62C having a different length to the Between the other shared base case 62A and top end case 62B is enough. In order to change the leg length of the front traveling device 40, the front wheel support arms 67 having different lengths are prepared.

In FIGS. 1 to 3, 5, 6, and 21 to 23, the left and right front wheels 40A are respectively rotatably supported by the front shaft 67a and the left and right positions are freely adjustable on the lower part of the front wheel support arm 67. The upper part of the arm 67 is provided with a square tube part 67b, and is attached to the corner shaft part of the front corner shaft 68 so that the position in the left-right direction can be changed and it can swing integrally.

The left and right inner end sides of each of the left and right front angle shafts 68 are rotatably supported by a front support bracket 69 provided at the front of the stand 7 around a front transverse shaft 69 a. An integrally rotatable front link arm 70 is mounted on the corner shaft portion of the front corner shaft 68 , and a link rod 71 is connected to the top end of the front link arm 70 .

The rear end of the linkage rod 71 is connected to the rear linkage arm 66 of the outer cylinder housing 59A, and the rotation of the outer cylinder housing 59A is transmitted to the front corner shaft 68. Using these rotations, the rear wheel transmission box centered on the outer cylinder housing 59A The angle of 62 and the angle of the front wheel support arm 67 centered on the front angular axis 68 are changed at the same time by the same angle, and the mobile body T can be raised and lowered in a horizontal posture.

The left and right front angle shafts 68 and the left and right outer cylinder housings 59A are fitted with front and rear portions of relatively rotatable front and rear support bodies 72 , and the rear ends of the left and right front and rear support bodies 72 are fixed to the bottom surface of the gearbox M. The control support member 73 is connected, and the front angular shaft 68 and the outer end portion of the outer cylinder case 59A protruding from the mobile body T are rotatably supported by these front and rear support bodies 72 and support members 73 .

In Fig. 2, 5, 23, in the front part of described stand 7, be provided with the cushioning part 47 that protrudes ahead of the front angle shaft 68 and front link arm 70, be provided with the current upper part at the front upper part of this buffering part 47. The front rope hook 47A for hooking and fixing the rope when the seedling transplanting machine 1 is mounted on a truck and transported. The rear rope hook 48, as shown in Figures 2 and 7, is located on the joystick H.

In FIGS. 2 to 6 , an elevating mechanism 42 is provided between the platform 7 of the mobile body T and the rear wheel transmission case 62 . The platform 7 is provided with a lifting cylinder 75 for moving the body T up and down, and a shaft base 76 pushed and pulled back and forth by the lifting cylinder 75 , and a freely rotatable undulating shaft 77 is supported on the shaft base 76 .

Lifting rods 77a, 77b and a heave arm 77c are fixed to the heave shaft 77 . The elevating rods 77a, 77b protrude to the left and right ends of the heave shaft 77 in the direction opposite to each other in the diameter direction, and are connected with the interlocking member 78 provided on the outer cylinder housing 59A through the interlocking rod 79, and are connected to the top end of the heaving arm 77c. The heave cylinder 74 is supported on the axle seat 76 .

Utilizing the telescopic movement of the heave cylinder 74, the heave shaft 77 is rotated by the heave arm 77c, the elevating rods 77a, 77b are reversely oscillated, and the left and right outer cylinder shells 59A are reversely rotated by the linkage member 78 and the linkage rod 79, One of the left and right sides of the mobile body T is raised and the other is lowered to tilt left and right. The lifting unit of the lifting mechanism 42 is thus constituted.

Utilizing the telescopic action of the lifting cylinder 75, the shaft seat 76, the heave shaft 77, and the lifting rods 77a, 77b move back and forth integrally, and the left and right outer cylinder shells 59A rotate in the same direction through the linkage member 78 and the linkage rod 79, and Raise and lower the mobile body T. These components constitute the lifting unit of the lifting mechanism 42 .

The lift mechanism 42 may omit the lift unit such as the lift arm 77 c and the lift cylinder 74 , and may only be composed of a lift unit that lifts the mobile body T by the lift cylinder 75 .

In Fig. 7, 8, 11, 12, 21, main frame 8 is installed at the rear portion of gearbox M, planting frame 82 is installed on the underside of this main frame 8, on the left and right sides of this planting frame 82 ( Left side) operation transmission case 83 is installed.

The planting frame 82 includes: a left and right plate 82A fixed on the rear of the gearbox M and the front of the main frame 8; a U-shaped auxiliary plate 82B connected to the rear of the left and right plates 82A; The rear portion of the auxiliary plate 82B is a connection member 82C that connects the front and rear intermediate portions of the main frame 8 .

The front portion of the operation transmission box 83 is positioned at the side of the gearbox M, and the front axle 84 directly connected with the transplant output shaft 55 is supported, and the rear portion of the operation transmission box 83 is supported to the drive shaft 85. A chain transmission unit is provided between 85, and the drive shaft 85 is a power transmission shaft shared by the seedling planting device U and the seedling supply device K.

The driving shaft 85 has: the concentric left and right short shafts 85a pivotally supported on the planting frame 82; the arms 85b located at the inner ends of the two short shafts 85a; It is roughly crank shape in the plan view, described left minor shaft 85a and connecting rod shaft 85c constitute the planting drive shaft 30 of driving seedling planting device U, and right minor shaft 85a drives seedling supply device K.

In FIGS. 7 to 12 and 21, the seedling supply device K has: a turntable S that can rotate intermittently around the longitudinal axis 10; a plurality of seedling supply devices K1 arranged around the turntable S; The seedling N is accommodated and dropped; and the supply drive mechanism K2 which drives the turntable S synchronously with the vertical movement of the seedling planting tool U1.

The right short shaft 85a of the driving shaft 85 is the transmission starting end of the supply linkage unit 13 of the supply drive mechanism K2, and a brake disc 86 is fixed on the right short shaft 85a, and a recess is formed on the outer periphery of the brake disc 86, The roller 87a of the brake arm 87 is elastically pressed by the spring 87b, and braked by the brake disc 86 so that the right short shaft 85a stops at a certain position.

On the main frame 8, a support member 19 is vertically provided. On the support member 19, there are provided: a vertical shaft support portion 19a for supporting the turntable S as a freely rotatable vertical shaft 10; a shaft support portion 19b; and a peripheral support portion 19c.

In the turntable S, many seedling supply tools K1 are arrange|positioned at equal intervals in the circumferential direction in the peripheral part of a disk. This seedling supply device K1 has: a supply cup 34 having a supply outer cup 34a and a supply inner cup (sleeve) 34b inserted thereinto substantially accommodate the seedlings N; and a shutter 35 which is opened by a hinge 35a. The seedlings N are placed under the bottom opening of the supply outer cup 34a so as to be able to be closed;

Both the supply outer cup 34a and the supply inner cup 34b are trumpet-shaped in which the inner diameter expands from the lower side to the upper side. In FIGS. Equal and flexible use while using a supply inner cup.

The lower part of various supply inner cups 34b has an inner diameter smaller than that of the supply outer cup 34a and is detachably embedded in the supply outer cup 34a, and the outer peripheral surface of the upper and lower midway parts of the supply inner cup 34b is formed with an externally embedded supply outer cup. The ring-shaped fitting part 34c of the upper edge of 34a.

Since the supply inner cup 34b has the fitting portion 34c, it can be attached to the supply outer cup 34a in a correct posture without tilting.

There are 14 seedling supply devices K1. There may be 7 or 8 seedling supplying devices K1, but preferably 12 to 17 are arranged, and the transplanting operation can be performed by multiplying the number and multiplying the transplanting speed. Every other one of the 14 supply cups 34 is marked with a mark, and the two follow-up operators supply the seedlings N alternately.

The disc of the turntable S is made of sheet metal, and is mounted on the upper surface of a disc-shaped mounting body 20 provided on the upper part of the vertical shaft 10 . Between the mounting body 20 and the turntable S, a phase adjustment unit 21 for adjusting the phase in the rotation direction of the turntable S is provided.

The phase adjustment unit 21 has: a plurality of (three positions) arc holes 21A formed on the turntable S along the circumferential direction, and the arc holes 21A are formed in an arc shape with the longitudinal axis 10 as the center of curvature; The circular arc holes 21A and the fasteners 21B screwed with the mounting body 20, by loosening the fasteners 21B, the turntable S can rotate around the longitudinal axis 10, and the rotation direction of the seedling supply device K1 can be finely adjusted. s position.

The longitudinal shaft 10 is supported on the longitudinal shaft supporting portion 19a of the supporting member 19, and the lower part has a worm wheel 22, and the worm 23 meshing with the worm wheel 22 is arranged on the horizontal shaft 14 supported by the horizontal shaft supporting portion 19b, and the horizontal shaft 14 It is intermittently driven by power from the planting drive shaft 30 (right short shaft 85 a ) by supplying the interlocking unit 13 .

Below the turntable S, the gate closing member 36 for opening and closing the gate 35 is supported by the peripheral support portion 19 c of the support member 19 . The shutter closing member 36 is formed of a bar material in a ring shape in plan view, and is arranged close to the lower surface of the shutter 35 of the seedling supply tool K1.

The turntable S rotates clockwise in FIGS. 3 and 8 , and the seedling feeding device K1 on it moves to the central position in the left and right direction of the main frame 8 , which is the seedling feeding position P where the gate 35 is opened and the seedlings N are dropped and fed.

The annular front portion of the gate closing member 36 protrudes to the front side, and the front portion corresponds to the seedling supply position P, and in the rotation direction of the turntable S, except for the seedling supply position P, it is forward from the seedling supply position P. Before reaching the seedling supply position P, the gate 35 is closed from the open position, and at the seedling supply position P, the rear end of the gate closing member 36 becomes a free end, and the closure of the gate 35 is released.

The ring-shaped gate closing member 36 has an intermediate closing portion 36b that is substantially concentric with the vertical axis 10 and the turntable S, and extends from the front of the seedling supplying position P to just before reaching the seedling supplying position P. Make the gate 35 in the closed posture; the starting end closing part 36c, which is inclined upward from the front of the seedling supply position P and connected to the halfway closing part 36b, and closes the gate 35 from the open position; the opening part 36a, which opens A portion 36a is connected to the start end closing portion 36b and is located on the front side of the gate 35 in the open position at the seedling supply position P;

The start end closing portion 36c of the gate closing member 36 is linear, and slopes from the beginning of the arc-shaped intermediate closing portion 36b to the front side and left and right central sides in plan view, and slopes downward in side view.

The opening portion 36a extends in an arc shape from the start end of the start end closing portion 36c to the side opposite to the rotation direction of the turntable S in plan view, and moves downward from the turntable S along the arc of the outer peripheral portion of the turntable S when viewed from the side. As shown in FIGS. 7 and 9 , the outer peripheral portion of the gate can accept the gate 35 in a substantially vertical posture opened by the force applying unit 37 .

The connecting portion 36d of the gate closing member 36 connects the beginning end side of the opening portion 36a with the rear portion of the halfway closing portion 36b, keeps the rear end of the halfway closing portion 36b as a free end, and proceeds in front of the rear end of the halfway closing portion 36b. To connect, the gate closing member 36 is made into a seamless ring shape to improve the shape retention strength.

The rear end of the halfway closing portion 36b becomes a free end that is not connected to the connecting portion 36d, so that the gate 35 is closed while abutting against the free end of the halfway closing portion 36b, and after passing through the free end, it is opened by the force applying unit. 37 is opened quickly and reliably, and is in the state of being in contact with the opening part 36a.

The supply driving mechanism K2 includes the longitudinal axis 10 of the turntable S, the transverse axis 14 and the supply linkage unit 13, etc., and the supply linkage unit 13 includes the right short axis 85a of the drive shaft 85, the brake disc 86, and the like.

The supply drive mechanism K2 is connected to the driving shaft 85 that drives the seedling planting tool U1, and power is transmitted from the driving shaft 85, thereby synchronizing with the lifting action of the seedling planting tool U1, and every time the driving shaft 85 rotates, one seedling supplying tool K1 is intermittently rotated. It moves to the seedling supply position P, and raises and lowers the seedling planting tool U1 once.

In FIGS. 2 to 4, 7, 8, 11, 12, 17 to 20, the seedling planting device U has: a pair of first upper parts pivotally supported on the front upper parts of the left and right plates 82a of the planting frame 82 of the mobile body T. The connecting rod 26; the planting swing body 27 arranged on the pair of first connecting rods 26; the pair of second connecting rods 28 pivotally supported on the planting swinging body 27 and extending backward and upward; The seedling planting tool U1 at the top of the pair of second connecting rods 28; the rotating arm 29 (arm 85b) connected to one of the pair of second connecting rods 28 through the connecting rod shaft 85c; The planting drive shaft 30 (short shaft 85 a ); and the discharge unit 95 , and the planting depth adjustment mechanism 44 and the enlarged hole excavating mechanism 130 and the like are also provided.

The planting drive shaft 30 and the rotating arm 29 are the short shaft 85a and the arm 85b on the left side of the driving shaft 85. When the short shaft 85a rotates once, the connecting rod shaft 85c revolves through the arm 85b, so that a pair of second connecting The front and rear midway parts of the rod 28 rotate circularly, so that the seedling planting utensil U1 at the top of the second connecting rod 28 is constrained by the swing of the pair of first connecting rods 26 to follow an approximately elliptical locus L (Fig. shown) to move.

The seedling planting utensil U1 is generally mouth-shaped in the side view of the internal hollow, and has a support body 96 installed on the top ends of a pair of second connecting rods 28; a guide member 97; and a pair of pointed front and rear mouth members 98 which are pivotally supported on the support body 96 and whose lower parts can be inserted into the ridge R.

A pair of mouth parts 98 are pivotally supported at the top, and the bottom part can be opened and closed freely, and protrude into the ridge R by periodic (intermittent) up and down movement to form a hole W1 for planting seedlings, and the seedlings N held inside can be discharged into the ridge R. below.

The discharge unit 95 has: a support arm 95a pivotally supported on the planting swing body 27; a rod 95b connecting the support arm 95a to one mouth member 98; The link pin 95c which swings back the part 98; and the cam 95d which swings the support arm 95a up and down.

The cam 95d is provided on the link shaft 85c, revolves around the short shaft 85a, touches the middle part of the support arm 95a to make it swing up and down, and when the seedling planting tool U1 descends to the vicinity of the bottom dead center of the vertical movement range, one side The mouthpiece 98 of the outlet unit 95 is used to swing outward by the rod 95b and the support arm 95a, and the swing of one mouthpiece 98 uses the linkage pin 95c to make the other mouthpiece 98 swing in the opposite direction, so that the pair of mouthpieces 98 is opened (state of FIG. 17).

At the top dead center of the up-and-down movement range, the pair of mouth members 98 of the seedling planting tool U1 are in a closed state, and are located directly below the seedling supplying tool K1 of the turntable S at the seedling supplying position P, and the seedlings N are received from the seedling supplying tool K1. Supply, move forward and downward from the top dead center, break into the ridge R from the middle, and open a pair of mouth parts 98 to form the seedling planting holes W1 as approaching the bottom dead center, and simultaneously release the seedlings N, after releasing the seedlings, It moves rearward and upward while closing the pair of mouthpieces 98 .

The forward and backward movement of the seedling planting tool U1 along the roughly elliptical locus L is canceled out by the forward movement of the moving body T, and the seedling planting tool U1 protrudes into the ridge R in a nearly vertical posture and pulls out the seedling N in a nearly vertical posture. Plant in a roughly upright position.

A vibration applying unit 148 is provided on the upper portion of the seedling planting tool U1. The vibration applying unit 148 is configured by attaching a handle to a pivot pin of the second link 28 connected to the seedling planting tool U1. Since the seedling planting tool U1 is in the raised position when the planting work is not performed, the handle of the vibration applying unit 148 can be held to vibrate, and the seedling planting tool U1 can be vibrated to drop the attached soil. This vibration applying means 148 is arrange|positioned at the rear position of the preparation seedling stand Y, and can be easily operated from the side of the following space G.

In FIGS. 2-8, 13-15, the grounding body 43 which rolls on ground is arrange|positioned in front of the said seedling planting tool U1, and the upper surface of the ridge R is detected and ground leveling. This grounding body 43 constitutes a planting depth adjustment mechanism 44, which adjusts the height of the mobile body T and the seedling planting utensil U1 relative to the upper surface of the ridge and sets the planting depth of the seedling planting utensil U1. H on the adjustment lever 45 to adjust.

The grounding body 43 is a cylindrical (or substantially drum-shaped) rolling with a wide width at a predetermined position of the planting seedling N on the upper surface of the ridge, and is rotatably supported on the rear of the support frame 105 by the support shaft 106 around the horizontal axis. . The left and right front parts of the support frame 105 are pivotally supported vertically by the support member 73 fixed to the lower part of the gearbox M via the bracket 73 a and the support shaft 107 .

A cylindrical material 111 is embedded on the support shaft 107 on the left side, and a first sensing arm 108 is provided on the cylindrical material 111, and the upper end of the first sensing arm 108 is linked with the lifting valve 110 through the second sensing arm 109, The lift valve 110 is disposed on the upper portion of the transmission M, and controls the lift cylinder 75 .

In addition, a double-forked arm 112 is provided on the cylindrical material 111, and a spring 113 for biasing the ground body 43 toward the ridge R side is provided between the first arm 112a of the double-forked arm 112 and the support frame 105. The tip of the outer wire 114a of the Bowden wire 114 for connecting to the adjustment rod 45 is connected to the second arm 112b of the arm 112 .

The adjusting rod 45 is pivotally supported on the rear part of the main frame 8 by a pivot, and the wire arm 118 which rotates integrally with the adjusting rod 45 is connected with the supporting frame 105 by the inner wire 114b of the Bowden wire 114, and the top end of the inner wire 114b is hooked on on the support frame 105.

By operating the adjustment lever 45 back and forth, the angle between the support frame 105 and the first sensing arm 108 is changed by means of the Bowden line 114, and the support frame 105 swings up and down to change the height of the grounding body 43, moving the body T And the relative height of the seedling planting utensil U1 with respect to the grounding body 43 is adjusted. The height of the grounding body 43 when the lift valve 110 is in the middle state determines the bottom dead center of the up and down movement of the seedling planter U1, and determines the depth of the protrusion from the upper surface of the ridge R. Therefore, the planting depth of the seedling planter U1 is set.

When the grounding body 43 is in contact with the ridge R at a set height, the lifting valve 110 is in an intermediate state, and the mobile body T does not lift, but when the height of the ridge R that it contacts changes, for example, when the ridge R becomes higher , the grounding body 43 and the supporting frame 105 just swing upwards, and the first sensing arm 108 moves downward through the tube material 111 and the double wishbone 112, thereby making the lifting valve 110 act, making the lifting cylinder 75 extend and the front and rear wheels 40A, 41A are pushed down, and the mobile body T is raised relatively, and the seedling planting tool U1 is adjusted to the set height separated from the upper surface of the ridge R.

When the adjustment rod 45 swings forward, the support frame 105 moves downward through the inner wire 114b, the grounding body 43 leaves the mobile body T downward, and the first sensing arm 108 and the second sensing arm 109 move upward to make the lifting valve 110 act. Control the lift cylinder 75 to the lift side. Therefore, the height of the mobile body T and the seedling planting tool U1 from the upper surface of the ridge becomes higher, and the planting depth formed by the seedling planting tool U1 becomes shallower, that is, the height of the bottom dead center of the seedling planting tool U1 becomes shallower.

On the contrary, when the adjusting rod 45 swings back and forth, the supporting frame 105 moves upwards, and the lifting cylinder 75 is controlled to the descending side through the first sensing arm 108, the second sensing arm 109 and the lifting valve 110, and the grounding body 43 approaches The mobile body T, the height of the mobile body T and the seedling planting device U1 away from the upper surface of the ridge becomes lower, and the planting depth formed by the seedling planting device U1 becomes deeper.

A guide member 120 that guides the front and rear swing of the adjustment rod 45 is provided on the joystick H. The guide member 120 and the adjustment rod 45 are disposed on the side of the turntable S, and the adjustment rod 45 is located in front of the grip part of the joystick H and The left and right sides of the turntable S are arranged at substantially the same height as the seedling supply tool K1 of the turntable S.

In FIGS. 1 to 3 , the front of the gripping portion of the joystick H and the left and right sides of the turntable S serve as a follow-up space where the operator who supplies the seedlings N to the seedling supply device U1 can follow the seedling transplanter 1 G, An operator in the left following space G can operate the adjustment lever 45 in such a posture while supplying the seedlings N to the seedling supply tool K1.

In FIGS. 1-3, 21, 22, the preparatory seedling stand Y on which the seedling N is placed is arranged at the front upper part of the mobile body T. The front and rear parts of the left and right front and rear support bodies 72 are relatively rotatably fitted to the front corner shaft 68 and the axle box 59 respectively, and the front and rear leg parts 123F and 123R of the support member 123 are connected across the front and rear support bodies 72 and the main frame 8 . , On the left and right supporting members 123, the preparation seedling platform Y is installed.

The prepared seedling platform Y has a platform frame Y1 and a bottom plate Y2 connecting the left and right support members 123. The platform frame Y1 is configured to assemble the angle materials (or strip plates) into a rectangle, and connect the front and rear angle materials with two plates Y1a in the middle of the left and right sides. The left and right corner members are connected by one plate Y1a at the front and rear midway, and the left and right two plates Y1a are connected to the left and right support members 123. The bottom plate Y2 is formed of a perforated plate and has many holes Ya for drainage.

The preliminary seedling platform Y protrudes left and right from the mobile body T above the hood B covering the engine E, and is inclined upward from the rear to the front, so that workers in the follow-up space G can easily take out the seedlings N.

The seedlings N supplied to the seedling supply device K1 are cultivated in the state put into the unit tray (seedling cultivation tray), and the unit tray is placed on the preparation seedling platform Y, and the seedlings N are taken out from the unit tray and supplied to the seedling supply device K1.

On the control handle H, there are a travel clutch lever 124, a planting clutch lever 115, and a body lifting lever 126. The adjustment lever 45 is similarly arranged at a position where an operator traveling in the left following space G can operate it.

In Fig. 2, 3, 7, 8, the lower part of the planting clutch lever 115 is penetrated and supported on the bracket 117 fixed on the rear part of the main frame 8, and the rotating body 118 is fixed at its lower part, and the rotating body 118 is connected to The power transmission mechanism 53 can be switched by operating the interlocking member 116 .

A V-shaped plate 117A is fixed on the bracket 117, and two adjusting bolts 117B are screwed on the plate 117A. When the rotating body 118 rotates clockwise or counterclockwise, the two adjusting bolts 117B Butt against it.

The two adjusting bolts 117B form a positioning unit 121 for setting the rotation angle of the planting clutch lever 115 between the lower part of the planting clutch lever 115 and the main frame 8 .

The power transmission mechanism 54 is arranged in the gearbox M, and can transmit power so as to switch between the forward and backward movement of the mobile body T and the operation of the seedling planting device U. The positioning unit 121 adjusts the rotation angle to make the switching position of the planting clutch lever 115 correct.

The planting clutch lever portion 115 stands substantially directly above the bracket 117 , and bends substantially at right angles at an upper portion passing through the operation panel 122 . Since the planting clutch lever 115 is in an upright position, and the operation panel 122 is located approximately directly above the positioning unit 121, it is easy to perform switching and rotating operations, and it is also easy to see the switching position.

In Fig. 2, 4, 21, 23, at the front and rear lower parts of the mobile body T, there are front brackets 127 and rear brackets 128 which can be lifted and kept freely, so as to stop and maintain for a long time.

The front support 127 is pivotally supported on the platform 7, and its posture can be changed into a standing posture and a retreating posture, and has: a pair of left and right pillar parts 127a connected to the front part of the platform 7 in a swingable manner at the upper part; and connecting the left and right pillar parts 127a The lower part and the horizontal bar part 127b that protrudes from the left and right pillar parts 127a to the left and right outwards.

The upper part of the rear bracket 128 is pivotally supported on the rear part of the main frame 8 or the connecting part 82C, the posture of the rear bracket 128 can be changed into a standing posture and a retracting posture, and has: a pair of left and right pillar parts 128a connected swingably; The rear bracket 128 is U-shaped in a rear view by connecting the horizontal bar portion 128b at the lower portion of the left and right pillar portions 128a.

As shown in FIG. 21 , the height of the rear frame 128 is set higher than that of the front frame 127, and when the front wheel 40A and the rear wheel 41A are grounded, the front frame 127 and the rear frame 128 stand upright. On the other hand, when the standing posture is grounded, the mobile body T is in a state of leaning forward and downward.

In such an upright posture, even if the front wheel 40A touches the ground, the rear wheel 41A can be brought into a floating state. Thereby, the right-and-left position adjustment of 41 A of left and right rear wheels, ie, wheel base adjustment can be easily performed.

In FIGS. 2-8, 13-20, before the said seedling planting tool U1, the enlarged hole digging mechanism 130 which forms the enlarged hole W2 behind the grounding body 43 is arrange|positioned. This enlarged hole digging mechanism 130 is arranged below the first link 26, the planting swing body 27, and the second link 28 of the seedling planting device U. As shown in FIG.

The enlarged hole excavating mechanism 130 has: a support rod 132, the front part of which is pivotally supported on the mobile body T and moves up and down in conjunction with the up and down movement of the seedling planting utensil U1; a hoe part 131, the hoe part 131 Be located on the rear portion of this support rod 132, utilize the downward movement of support rod 132 to protrude into the ridge R and form the enlarged hole W2 from the rear to the front of the predetermined position of the seedling planting hole W1; The force applying part 133 applies force upward to the middle part of the front and rear direction of the support rod 132; Turning moves downward and causes the support rod 132 to drop.

The support rod 132 is arranged long in the front-rear direction, has a cylindrical body 132A and a stopper 132B at the front end, and has a V-shaped mounting body 132C at the rear end. On the shaft 107, the support member 73 is fixed on the gearbox M, and when the support rod 132 rises to the most raised position, the stopper 132B abuts against the support member 73 to restrain its rise.

The hoe member 131 is formed by bending a plate, and has left and right wing parts 131L, 131R protruding into the ridge R and pushing the ridge soil from the center side to the left and right; The lifting part 131S that lifts up the ridge.

In this hoe member 131, the height of the central portion of the left and right wing portions 131L, 131R is fastened by bolts to the mounting body 132C at the rear end of the support rod 132, and the vertical width is gradually enlarged from the left and right ends to the central portion, and The lower edge of the lifted portion 131S is in the shape of a bowl bottom when viewed from the front.

In addition, the vertical width of the hoe member 131 is gradually enlarged from the left and right ends to the central part, and the left and right wing parts 131L, 131R form left and right inclined surfaces with the central part located in front of the left and right ends. The lower edge of the raised portion 131S protrudes forward and downward and forms an inclined surface facing forward and upward, and the lower edge of the raised portion 131S is in the shape of a bowl bottom when viewed from the front.

In addition, the hoe member 131 is disposed at a position overlapping and close to the rear portion of the left and right wing portions 131L, 131R and the seedling planting tool U1 at the start of the seedling planting operation in the front-rear direction during the rising standby.

The hoe member 131 protrudes into the upper surface of the ridge R from the front of the planned formation position of the seedling planting hole W1, and excavates while pushing the ridge soil from the center side to the left and right. Rise to the front to dig holes. Since the lifting part 131S of the hoe member 131 lifts up the ridge soil for excavation during the whole process of hole excavation, the resistance received from the ridge soil is small, and there is little residual soil in the final stage, which can form a hole W1 shallower than that of the seedling planting hole W1. On the other hand, the bowl-shaped enlarged hole W2 is large and reaches the bottom at the planned position for forming the seedling planting hole W1.

As shown in FIG. 17 , the hoe member 131 is in a slightly backward-inclined posture from the beginning to the end of the excavation of the enlarged hole W2 when viewed from the side, and is in a forward-inclined posture when it is on standby as shown in FIG. 13 . In addition, since the front fulcrum of the support rod 132 is at a position away from the hoe member 131 forward, the hoe member 131 moves up and down in the vertical direction as much as possible.

The support rod 132 is bent upward in the middle part in the front-rear direction to avoid interference with the grounding body 43 and approaches the planting drive shaft 30 , and a contact plate 132 a , a bar 132 b and a guide pin 132 c are fixed to the upper part in the middle.

The lower end of the extension spring as the force application member 133 is hooked on the rod 132b of the support rod 132, and the upper end of the extension spring is connected with the adjusting rod (not shown) provided on the main frame 8, and the adjustment rod is utilized to The up and down position is adjusted to adjust the applied force for lifting the support rod 132 .

In FIGS. 13 to 20, the planting drive shaft 30 supports the connecting rod shaft 85c through the rotating arm 29 (arm 85b) on the short shaft 85a that transmits the rotational power, and the base of the swing arm 135 is pivotally supported on the connecting rod shaft. 85c, the actuating part 134 is pivotally supported on the top end of the swing arm 135 . As the short shaft 85a rotates, the link shaft 85c revolves along the circular locus J via the arm 85b.

The actuation member 134 is in the shape of four leg-shaped plates fixed on a cylindrical hub member. The hub member is connected to the swing arm 135 through a swing shaft 137. The upper leg portion in FIG. 16 A restricting portion 134a is formed on the front upper side, a small shaft 140 is fixed on the upper front side and a roller 141 is fitted to form a push-down portion 134b, and a guide pin 132c is fitted on the lower front foot The swing guide part 134c is formed by the long hole 142 which fits, and the stopper part 134d is formed on the foot part which is located in the rear upper side.

The roller 141 of the push-down part 134b of the actuating member 134 can abut against the contact plate 132a, and the front and rear middle parts of the support rod 132 are pushed down by the downward movement of the push-down part 134b.

When the actuating member 134 rotates around the swing shaft 137 , the restricting portion 134 a of the actuating member 134 abuts against the base of the swing arm 135 to restrict upward rotation.

Since the elongated hole 142 of the swing guide 134c is fitted with the guide pin 132c, the support rod 132 is always urged upward by the urging member 133. Therefore, when the guide pin 132c is at the upper end of the elongated hole 142, the actuating member 134 When the upward bias is applied, the restricting portion 134 a is biased in a direction in contact with the base of the swing arm 135 , allowing the guide pin 132 c to move downward along the elongated hole 142 .

The stopper portion 134d can be in contact with the base of the swing arm 135 to restrict the actuating member 134 from rotating around the swing axis 137 in the counterclockwise direction in FIG. 18 over a certain angle.

When the upward rotation of the restricting part 134a is restricted due to the applied force from the support rod 132 and abuts against the swing arm 135, the actuating part 134 is integrated with the swing arm 135 and is pushed down by the swing arm 29, while rotating around the short axis 85a. , as the link shaft 85c rotates downward, the actuating member 134 moves downward, and with this rotation, the roller 141 of the push-down portion 134b abuts against the contact plate 132a of the support rod 132, so that the support rod 132 descends. .

The moment when the link shaft 85c and the swing shaft 137 are arranged in a straight line below the short axis 85a, that is, the turning arm 29 and the swing arm 135 are in a straight line, is the moment when the hoe member 131 descends to the lowest point. When the link shaft 85c crosses this state During the revolution, the swing arm 135 is biased by the support rod 132 to reversely rotate, and the restricting portion 134 a of the actuation member 134 is temporarily separated from the base of the swing arm 135 . At this time, the stopper portion 134 d abuts against the swing arm 135 to restrict the counterclockwise rotation of the operating member 134 around the swing shaft 137 .

Then, when the link shaft 85c further revolves and moves upward, the restricting portion 134a comes into contact with the swing arm 135 again, and the operating member 134 moves upward together with the upward movement of the link shaft 85c.

Fig. 13 shows the state that the seedling planting utensil U1 and the hoe part 131 are in approximately top dead center, and Fig. 18 shows that just after the seedling planting action of the seedling planting device U starts, Fig. 19 and 20 show that the seedling planting action of the seedling planting device U is in the middle, 17 denotes the second half of the hole digging operation of the enlarged hole digging mechanism 130 .

13, 16 to 20, as the short axis 85a rotates, the link shaft 85c revolves along the circular locus J centered on the short axis 85a, and the second link 28 moves up and down while moving back and forth, and the The seedling planting tool U1 moves up and down along the trajectory L, and the hoe member 131 moves up and down by the revolution of the link shaft 85c in conjunction with the movement of the lower half of the track L of the seedling planting tool U1.

In FIG. 18 , the center line Q of the pivoting arm 29 is in a substantially horizontal posture (the crank angle is about 1°), the top end of the seedling planting tool U1 is located in the approximate center of the vertical direction of the trajectory L, and the hoe member 131 begins to sink into the ridge R and start An enlarged hole W2 is formed.

At this time, the restricting portion 134a of the actuating member 134 abuts against the swing arm 135 and is restricted from rotating upwardly, and the roller 141 of the push-down portion 134b abuts against the contact plate 132a of the supporting rod 132, and the action of pushing down the supporting rod 132 starts. .

In Fig. 19, when the short axis 85a is rotated and the center line Q of the rotating arm 29 is in a posture facing forward and downward (the crank angle is about 30°), the hoe member 131 gradually sinks into the ridge R, and at the same time, from this moment on, The top end of the mouth part 98 sinks into the ridge R from the upper surface of the enlarged hole W2 formed by the hoe part 131. When it is near the crank angle of 60° in FIG. 98 forms the seedling planting hole W1 rapidly.

The short shaft 85a is further rotated from the above state, and before the link shaft 85c moves to substantially directly below the short shaft 85a, the discharge unit 98 starts to operate by using the cam 95d, and the mouth part 98 of the seedling planting utensil U1 is opened to form a mouthpiece for planting a seedling. Simultaneously with opening the hole W1, the housed seedlings N are dropped and planted.

The moment when the link shaft 85c moves to substantially directly below the short axis 85a is the moment when the mouth member 98 is opened the most, and the moment when the pivoting arm 29 and the swing arm 135 are in a straight line is the moment when the hoe member 131 descends to the lowest. The planned position for forming the planting hole W1 forms the lowest bottom of the bowl-shaped enlarged hole W2.

When the swing arm 135 was in a straight line state with the rotating arm 29, the slotted hole 142 of the actuating part 134 was combined with the guide pin 132c to make the swing arm 135 rotate around the connecting rod shaft 85c, and the actuating part 134 turned counterclockwise. Rotate until it abuts against the base of the swing arm 135 .

In this state, the mouth member 98 is opened to the maximum, but the supporting rod 132 is pulled by the urging member 133 , and the actuating member 134 is moved upward by being pulled by the supporting rod 132 .

When the boom 29 was further rotated by the short axis 85a, the swing arm 135 was pulled to the rear and upward, and the actuating member 134 rotated because of being connected with the guide pin 132c, and the restricting portion 134a abuts against the swing arm 135, but Allowing the support rod 132 to move upward, the sinking of the hoe member 131 into the ridge R gradually becomes shallower.

And when the crank angle shown in FIG. 17 is 180°, the mouth member 98 is pulled out from the seedling planting hole W1 to start closing operation, and the hoe member 131 is also pulled out from the ridge R upward.

The enlarged hole W2 is bowl-shaped larger and shallower than the hole W1 for planting seedlings, overlaps with the hole W1 for planting seedlings, and is the deepest part of the hole W1 for planting seedlings when viewed from the side. The portion of the hole W1 for planting becomes the deepest due to the arc shape of the lower edge 131a of the hoe member 131, and the water poured into the enlarged hole W2 is concentrated in the hole W1 for planting the deepest seedling, and is efficiently supplied to the seedling N.

Since the tip of the nozzle part 98 of the seedling planting tool U1 is pointed, even if the hoe part 131 protrudes into the ridge R from the beginning of excavating the enlarged hole W2, the resistance is small, and the enlarged hole W2 will not be damaged. Since the enlarged hole W2 is formed first, compared with the situation without the enlarged hole W2, the mouth part 98 of the subsequent seedling planting utensil U1 can be inserted deeply into the ridge R with less resistance to form a deeper seedling planting hole. With the hole W1, the seedling N can be planted deeper.

The transplanting operation using the seedling transplanting machine 1 will now be described.

While moving the seedling transplanting machine 1 along the ridge R, the operator walks in the following space G behind the rear wheel 41A on the left side in coordination with the forward movement of the mobile body T, and raises the seedlings placed on the preparation seedling platform Y. The pot seedlings N in the tray are replenished to each seedling supply device K1. When one person works, the seedlings N are continuously injected into each seedling supplying device K1, and when two persons are working, each person injects the seedlings N into every other seedling supplying device K1.

Utilizing the power branched from the traveling drive system of the gearbox M, the power is transmitted from the planting drive shaft 30 to the planting drive mechanism U2 of the seedling planting device U, so that the seedling planting tool U1 is cycled along the approximately elliptical trajectory L that is long in the up and down direction. The vertical movement is linked with the up and down movement of the seedling planting utensil U1 to make the hoe part 131 of the enlarged hole excavating mechanism 130 move up and down, and the power transmitted to the planting drive mechanism U2 is diverted from the planting drive shaft 30 to the seedling supply device. The supply drive mechanism K2 of K transmits and intermittently drives the turntable S around the longitudinal axis 10 .

Along with the rotation of the turntable S, many seedling supply tools K1 intermittently move on a circular orbit. The gate 35 is closed by the halfway closing part 36b of the gate closing member 36, and the seedlings N are supplied on the gate 35. At the supply position P, the gate 35 is fully opened instantaneously by the urging member 37 to drop the seedlings N, and the seedlings N are supplied to the seedling planting tool U1 coming to the top dead center directly below the seedling supply device P.

The seedling planting device U1 of the seedling planting device U receives the supply of seedlings N from the seedling supply device K1 near the top dead center, moves downward together with the movement of the moving body T, inserts the ridge R until it reaches the bottom dead center, and opens it to form a ridge R. The seedling planting hole W1 is closed while moving upward while releasing the seedling N stored inside to the ridge R. This up-and-down movement and opening and closing operation are periodically performed synchronously with the rotation of the turntable S, and the seedlings N are planted on the ridge R at regular intervals.

When adjusting the entry depth of the seedling planting utensil U1 relative to the upper surface of the ridge R, that is, the planting depth, the operator in the left following space G swings the adjustment lever 45 of the planting depth adjustment mechanism 44 back and forth to change the depth. The setting height of the grounding body 43.

Before the seedling planting hole W1 is formed by the mouth member 98 of the seedling planting tool U1, the hoe member 131 is inserted into the ridge R and gradually becomes deeper, forming a bowl-shaped enlarged hole W2 reaching the maximum depth at the predetermined position where the seedling planting hole W1 is formed. , When the mouth member 98 leaves the seedling planting hole W1, the hoe member 131 also moves upward and reaches a standby position.

In addition, it is preferable to configure the shape of each member in the above-described embodiment of the present invention and the respective positional relationships of front-back, left-right, and top-bottom as shown in FIGS. 1 to 23 . However, it is not limited to the above-described embodiments, and various modifications and combinations of components and structures are possible.

For example, the hoe member 131 may also be directly fixed to the rear end of the supporting rod 132, or the left and right wing parts 131L, 131R may be respectively formed and fixed to the mounting body 132C.

A stud bolt may also be implanted on the mounting body 20 of the turntable S, and the circular arc hole 21A of the turntable S is fitted with the stud bolt, and fixed with a nut.

In the preliminary seedling stand Y, the front and rear leg parts 123F and 123R protrude downward from itself, and the front and rear leg parts 123F and 123R may be used as the support member 123 .

In addition, in the seedling transplanting machine 1, a pair of left and right pressing wheels that can be adjusted in height and abut against the ridge R can be arranged on the rear side of the planting frame 82 on the rear side of the seedling planting utensil U1, so that they can be positioned on the upper surface of the ridge R. The left and right sides of the planting position of the seedling N are rolled, and the soil on the left and right sides of the seedling N put into the seedling planting hole W1 formed by the seedling supply device K1 is pushed and covered with the soil with the left and right pressing wheels.

Claims (13)

1. A seedling transplanting machine has: a mobile body (T), which can move across the ridge (R); a seedling planting device (U), which is installed on the mobile body (T), It also has a seedling planting tool (U1) that moves up and down periodically to protrude into the ridge (R) to plant seedlings (N) while forming a seedling planting hole (W1); and a seedling supply device (K), The seedling supply device is arranged above the seedling planting device (U), and supplies the seedlings (N) to the seedling planting device (U1) at the raised position. The seedling transplanting machine is characterized in that, The mobile body (T) is provided with an engine (E) and a stand (7) at the front of the gearbox (M), and a main frame (8) is provided extending from the gearbox (M) to the rear. ) is connected with joystick (H), A front wheel (40A) is suspended by a front wheel support arm (67) connected to a pair of left and right front angle shafts (68), which are pivotally supported on the platform (7) Above, the rear wheel (41A) is suspended by the rear wheel transmission box (62) pivotally supported on the left and right pair of axle boxes (59), and the left and right pair of axle boxes (59) are arranged on the gearbox (M) , The front part of the left front and rear support body (72) is relatively rotatably fitted on the left side front angle shaft (68), and is relatively rotatably fitted on the left side axle box (59). The rear portion of the front and rear support body (72) on the left side is combined, and the front portion of the front and rear support body (72) on the right side is relatively rotatably fitted on the said front angle shaft (68) on the right side. The rear part of the front and rear support body (72) on the right side is relatively rotatably fitted on the axle box (59) on the side, and the rear part of the front and rear support body (72) on the left side and the main frame (8) is bridged between The support member (123) on the left side, the front foot portion (123F) of the support member (123) on the left side is connected with the front and rear support body (72) on the left side, the rear foot portion (123R) of the support member (123) on the left side ) is connected with the main frame (8), and the support member (123) on the right side is erected between the front and rear support body (72) on the right side and the main frame (8), and the front foot portion of the support member (123) on the right side (123F) is connected with the front and rear support bodies (72) on the right side, and the rear foot portion (123R) of the support parts (123) on the right side is connected with the main frame (8), and the left and right support parts (123) are equipped with a (N) prepared seedling platform (Y). 2. The seedling transplanting machine according to claim 1, characterized in that, the prepared seedling platform (Y) has a frame (Y1) and a base plate (Y2) connecting the left and right support members (123), and the base plate (Y2) ) are formed with many holes (Ya) for drainage. 3. The seedling transplanting machine according to claim 1 or 2, characterized in that, said preliminary seedling platform (Y) moves from the moving body (T) to the left and right above the hood (B) covering the engine (E). The direction is prominent, and the posture is inclined upward from the rear to the front. 4. The seedling transplanting machine according to claim 1 or 2, characterized in that, each of the left and right rear wheel drive boxes (62) has a base that is connected to the axle box (59) and supports the top shaft (58) box (62A); the top box (62B) supporting the wheel axle (63) of the rear wheel (41A); The intermediate case (62C) accommodates the transmission unit (64) that transmits power to the wheel shaft (63). 5. The seedling transplanting machine according to claim 1 or 2, characterized in that, on the seedling planting device (U1) at the rear position of the prepared seedling platform (Y), there is a device for giving soil loss when rising. A vibrating vibration applying unit (148). 6. The seedling transplanting machine according to claim 1 or 2, characterized in that, a buffer component (47) is provided on the front portion of the stand (7), and a rope hook is provided on the buffer component (47). Rope hook (47A) for hanging. 7. The seedling transplanting machine as claimed in claim 1 or 2, characterized in that, there is a power transmission mechanism (53) in the gearbox (M), and the power transmission mechanism can move forward and backward of the mobile body (T). Backward and the action of the seedling planting device (U) are switched to transmit power, the lower part of the planting clutch lever (115) is supported by the rear part of the main frame (8), and the planting clutch lever performs the power transmission by operating the linkage part (116). For the switching operation of the mechanism (53), a positioning unit (121) for setting the rotation angle of the planting clutch lever (115) is provided between the lower part of the planting clutch lever (115) and the main frame (8). An operation panel (122) is disposed approximately directly above the positioning unit (121), and the operation panel (122) is installed on the joystick (H). 8. The seedling transplanting machine according to claim 1, characterized in that, the seedling planting utensil (U1) moves up and down periodically along with the rotation of the planting drive shaft (30), The seedling supply device (K) has: an installation body (20) arranged on the upper part of the longitudinal axis (10); a turntable (S) placed on the installation body (20); arranged around the turntable (S) A plurality of seedling supply devices (K1) at the top, each seedling supply device can accommodate seedlings (N) and make seedlings (N) fall; drive mechanism (K2), A phase adjustment unit (21) for adjusting the phase in the rotation direction of the turntable (S) is provided between the mounting body (20) and the turntable (S). 9. The seedling transplanting machine according to claim 8, characterized in that, the phase adjustment unit (21) has: a plurality of arc holes (21A) formed on the turntable (S) along the circumferential direction, each arc The holes are formed in an arc shape with the longitudinal axis (10) as the center of curvature; and the fasteners (21B) pass through the arc holes (21A) and are screwed into the mounting body (20). 10. The seedling transplanting machine according to claim 8, characterized in that, the supply driving mechanism (K2) has: a worm wheel (22) arranged on the longitudinal axis (10); a worm gear (22) engaged with the worm wheel (22) (23); a horizontal shaft (14) provided with the worm (23); and a supply linkage unit (13) that utilizes power from the planting drive shaft (30) to rotate the horizontal shaft (14). 11. The seedling transplanting machine according to claim 8, characterized in that, the seedling supply device (K1) has: a supply cup (34) for storing the seedlings (N); at the bottom of the supply cup (34) An openable and closable gate (35) carrying seedlings (N); and a gate closing part (36), which is arranged under the gate (35) and is turned once again from the seedling supply position (P) Close the gate (35) from the open position before reaching the seedling supply position (P), and release the closure at the seedling supply position (P), The gate closing member (36) has a midway closing portion (36b) which is in the shape of an arc substantially concentric with the longitudinal axis (10) and extends from the front of the seedling supply position (P) to the point just before reaching the seedling. The gate (35) is in a closed posture before the supply position (P); the start end closure part (36c), which is inclined upward from the front of the seedling supply position (P) and is connected with the halfway closure part (36b), and will The gate (35) is closed from the open posture; the opening portion (36a) connected to the start end closing portion (36c) and located on the front side of the gate (35) in the open posture at the seedling feeding position (P); and A connecting portion (36d) connecting the opening portion (36a) and the halfway closing portion (36b). 12. The seedling transplanting machine according to claim 11, wherein the seedling supply tool (K1) has an urging unit (37) for urging the gate (35) in an opening direction. 13. The seedling transplanting machine according to claim 11, characterized in that, the supply cup (34) of the seedling supply device (K1) has: a supply outer cup (34a) installed on the turntable (S); and an inner diameter a supply inner cup (34b) which is smaller than the supply outer cup (34a) and is detachably embedded in the supply outer cup (34a), A fitting portion (34c) fitted on the upper edge of the supply outer cup (34a) is formed on the outer peripheral surface of the upper and lower intermediate portions of the supply inner cup (34b).