JP2002125417A - Vegetable seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems of the fixation of the planting pitch of a transfer and planting tool with the variation of the traveling speed of a transplanter body and the rotation of the planting tool in conjunction with the traveling body even in the reverse motion of the body. SOLUTION: The traveling body 2 is provided with a transmission mechanism to transmit the power of an engine to a generator 9. Plural gears constantly engaging with the gear of an inlet shaft are removably put on a speed change shaft 190 with ball clutches 191, 192, 193 and the inside of the speed change shaft 190 is made to be axially slidable with a shifter shaft 189 attached to a gland PTO case 8. The shifter shaft 189 is provided with a protrusion alternatively engaging with the ball clutches 191, 192, 193, the shifter shaft 189 is made to be engageable with a ball detent mechanism, a one-way clutch is placed at the inlet side of the gland PTO case 8 and the power transmission to the output side of the gland PTO case 8 is cut off in the case of the backward motion of the traveling body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mechanism for transmitting power to a working section of a vegetable seedling planting machine.

[0002]

2. Description of the Related Art There has been known a seedling planting machine for planting vegetable seedlings such as sweet potato seedlings.
No. technology. In this technique, a rotating shaft that rotates in conjunction with the running of the fuselage is provided on the fuselage frame, and a plurality of implants configured in a predetermined planting shape are radially arranged on the rotating shaft, and The sweet potato seedlings held in the above-described manner are configured to be planted in a predetermined planting posture in accordance with the traveling of the machine. The rotating shaft is provided on a power transmission path branched from a power transmission mechanism used for traveling driving, so that the plant is linked to traveling of the body.

[0003]

In the above prior art,
No transmission mechanism was provided on the power transmission path to the plant, and the planting pitch of the plant was fixed with respect to the traveling speed of the aircraft. Further, even when the traveling body is backed, the transplanted body rotates in conjunction with it, which may cause planting mistake.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in the first aspect, the frame is provided so as to be vertically movable with respect to the traveling body, and the ground PT is provided.
An O case is provided on the traveling body, a gear case is fixed to the frame, and power from the engine is transmitted. A vegetable seedling planting machine is configured to rotate and plant the vegetable seedling held by the plant.

That is, in claim 2, a frame is provided so as to be vertically movable with respect to the traveling body, a ground PTO case is provided in the traveling body, and a gear case is fixed to the frame to transmit power from the engine. One plant is provided on the output shaft of the gear case, and the plant is rotated as the vehicle travels, and a vegetable seedling planter is planted so as to plant the vegetable seedling held by the plant. A transmission mechanism for transmitting the output from the engine to the generator is provided on the traveling body.

That is, in claim 3, a frame is provided so as to be vertically movable with respect to the traveling body, a ground PTO case is provided in the traveling body, and a gear case is fixed to the frame to transmit power from the engine. One plant is provided on the output shaft of the gear case, and the plant is rotated as the vehicle travels, and a vegetable seedling planting machine is planted so as to plant the vegetable seedling held by the plant. A plurality of gears, which always mesh with the gears on the input shaft side, are provided on the speed change shaft via a ball clutch in the ground PTO case, and a shifter shaft slidable in the axial direction; And the ball clutch is engaged.

That is, in the present invention, a frame is provided to be vertically movable with respect to the traveling body, a ground PTO case is provided in the traveling body, and a gear case is fixed to the frame to transmit power from the engine. One plant is provided on the output shaft of the gear case, and the plant is rotated as the vehicle travels, and a vegetable seedling planting machine is planted so as to plant the vegetable seedling held by the plant. A one-way clutch is provided on the input side of the ground PTO case so that the power transmission to the output side of the ground PTO case is cut off when the traveling body moves backward.

[0008]

Next, embodiments of the present invention will be described.
1 is an overall side view showing a vegetable seedling planting machine, FIG. 2 is an overall plan view showing a vegetable seedling planting machine, and FIG. 3 is a developed sectional view showing a power transmission configuration of a transmission case and a ground PTO case. FIG. 4 is a side view showing a transmission case, FIG. 5 is a plan sectional view showing a working unit drive case, and FIG. 6 is a plant drive shaft, a table drive shaft, FIG. 7 is a diagram showing the number of rotations of a groove drive shaft, FIG. 7 is a diagram showing an outer peripheral shape of a gear in a working unit drive case for intermittent drive, FIG. FIG. 10 is a partial cross-sectional view as viewed from an arrow A showing a seedling feeding table, and FIG.
11 is a side sectional view showing the seedling holder, FIG. 12 is a side view showing the planting portion, FIG. 13 is a front view showing the planting portion, and FIG. 14 is a front view showing the planting claw. FIG. 15 is a side view showing the planting claw cam and the claw support cam, and FIG.
6 is a side view showing a cutting groove blade and a cross-sectional view taken along line CC, FIG. 17 is a side view showing a planting posture of sweet potato seedlings, and FIG. 18 is a side view showing ridge height detecting means. 19 is a side view showing a driving means for moving the planting frame up and down, and FIG.
FIG. 21 is a plan sectional view showing a traveling clutch structure, and FIG. 21 is a plan sectional view showing a main part of the traveling clutch structure.
2 is a side view showing the vehicle body level control mechanism, FIG. 23 is a plan view showing the vehicle body horizontal control mechanism, FIG. 24 is a side view showing the vehicle body level control mechanism at the rear of the fuselage, and FIG.
It is a front view which shows a ridge following apparatus.

As shown in FIGS. 1 and 2, a vegetable seedling planting machine 1
Is composed of a traveling machine body 2 and a working unit 30, and the traveling machine body 2 supports the working unit 30 via a lifting link mechanism 21 so as to be vertically movable. The traveling body 2 has a pair of left and right front wheels 4 disposed below a front portion of a vehicle body frame 3 and a pair of left and right rear wheels 5.5 disposed below a rear portion of the vehicle body frame 3. Then, on the right side of the rear part of the traveling body 2, in order from the top,
Fuel tank 12, engine 6, ground PTO case 8
Are arranged. A main transmission lever 25 and a transmission case 7 are arranged in order from the upper left side of the rear part of the traveling body 2. A chain case 10 extends forward and downward to the lower left of the transmission case 7, and a chain case 11 extends forward and downward to the right of the ground PTO case 8. In addition, a generator 9 is disposed in the upper front of the transmission case 7. The transmission case 7 branches the power of the engine 6 at the transmission case 7 and transmits the power to the ground PTO case 8, the chain cases 10 and 11, and further to the generator 9. Also,
The ground PTO case 8 includes a working unit 30 as described later.
Power to the motor. And chain case 1
Reference numeral 0.11 supports the rear wheel 5.5 at the front end of the chain case 10.11 so as to drive the rear wheel 5.5. Further, a pair of batteries 46 and 47 are disposed on the left and right sides of the engine 6, so that the electric power generated by the generator 9 is charged in the batteries 46 and 47.

The vehicle body frame 3 is formed in a U-shape in plan view, and a support frame 13 bridges the inside of the vehicle body frame 3. The support frame 13
A support 14 is placed on the top, and the support 14 supports a rear end of the elevating link mechanism 21. A driver's seat 15 is provided on the support 14. At the rear of the body frame 3, mudguards 16 are extended toward both sides of the body frame 3, and the mudguards 16.
Numeral 6 covers the rear wheels 5, 5 to prevent mud from splashing into the vehicle body. Inside the rear part of the body frame 3, side plates 17 are fixed to the body frame 3, and the side plates 17 support the support frames 18 and 18. Bridge between 17,
The rigidity of the side plates 17 is enhanced. The side plates 17, 17 are provided with a riding operation handle 19 on the outside.
19 and a handle 20 for traveling operation are fixedly provided. The handle 19 for riding operation is located on the side of the driver's seat 15, and the handle 20 for traveling extends to the rear part of the traveling body 2. Steps 24 are fixedly provided on the vehicle body frame 3 on the upper surface of the front portion of the vehicle body frame 3.

The working part 30 is disposed inside the front part of the vehicle body frame 3.
And a seedling feeding table 32 and a planting frame 33. The planting frame 33 is formed in a U-shape in plan view, and has support frames 33a, 33a standing upright at the rear. The working unit 30 supports the seedling feeding table 32 at the front end of the planting frame 33 and at the upper end of the support frames 33a. The planting frame 33 has a working unit drive case 34 fixedly provided at the lower right end of the planting frame 33. The working unit drive case 34 is a gear case,
It is configured to perform intermittent driving described later. The working unit drive case 34 transmits power to the planting section 31 to drive the planting section 31. Also, the working unit drive case 34 is provided by the ground PTO case 8.
Is configured to be able to transmit power via a connection shaft 35. Here, the ground PTO shaft 36, which is the output shaft of the ground PTO case 8, and the rear end of the connection shaft 35 are connected via a universal joint 38. Similarly, the input shaft 37 of the working unit drive case 34 and the connection shaft The front end 35 is also connected via a universal joint 39. The connecting shaft 35 is composed of an inner shaft and an outer shaft that are spline-fitted, and enables power transmission while expanding and contracting the entire length of the connecting shaft 35. With the above configuration, regardless of the vertical movement of the working unit 30 described later, the ground P
Power can be transmitted from the TO case 8 to the working unit drive case 34.

The lifting link mechanism 21 is a parallel link mechanism, and includes a pair of left and right front links 22L and 22R and a pair of left and right rear links 23L and 23R.
The front link 22L / 22R and the rear link 23L / 23R
The front links 22L and 22R and the rear links 23L are pivotally supported at the front ends thereof at the rear of the planting frame 33.
The rear end of the 23R is pivotally supported by the support 14.
For this reason, the working unit 30 is vertically movable with respect to the traveling machine body 2. The support frame 13, 13 is provided with support plates 40, 41, outside the rear links 23L, 23R.
42 is installed vertically. Here, the support plates 40 and 41
Is disposed on the left side of the rear links 23, and the support plate 42 is disposed on the right side.

Next, a drive transmission structure from the engine 6 to the transmission case 7 and the ground PTO case 8 will be described. As shown in FIGS. 3 and 4, an engine output shaft 156 is inserted into the transmission case 7 from the right side, and an engine gear 156a is fixed to the left end of the engine output shaft 156. A main shaft 157 is pivotally mounted on a casing 158 of the transmission case 7 below and in front of the engine output shaft 156, and a first main shaft gear 159 is fixed to a right end of the main shaft 157. The engine gear 156 and the first main shaft gear 159 are in mesh with each other.

Above the engine output shaft 156, P
A TO shaft 160 is pivotally mounted on the casing 158, and a double PTO gear 161 is fixed to the PTO shaft 160. The double PTO gear 161 is connected to the right first PT
It is composed of an O gear 161a and a left second PTO gear 161b. The first PTO gear 161a and the first
The main shaft gear 159 is meshed with the main shaft gear 159, and the engine output is
It is configured to be able to transmit to the TO shaft 160. FIG. 3 is a development view showing the mission case 7, the ground PTO case 8, and the like. Further, the second PTO gear 161b is formed of a bevel gear. A generator transmission shaft 162 extends forward from the casing 158, and the generator transmission shaft 162 is covered by a casing 163. The generator transmission shaft 162 has a casing 1
63, and a rear portion thereof is pivotally connected to the casing 158. A first generator transmission gear 164 is fixed to the rear end of the generator transmission shaft 162, and a second generator transmission gear 165 is fixed to the front end. The first generator transmission gear 164 and the second generator transmission gear 165 are both formed by bevel gears, and the second generator transmission gear 165 and the second
It is in mesh with the PTO gear 161b.

A generator drive shaft 166 is pivotally mounted on the casing 163 in the left-right direction.
A generator driving gear 167 is fixedly provided at the center of the left and right of the generator 6. The generator drive gear 167 and the second generator transmission gear 165 are both constituted by bevel gears and mesh with each other. A generator drive pulley 168 is fixedly provided at the left end of the generator drive shaft 166. The generator drive pulley 168 and the generator 9 are connected via a V-belt 9a. It is configured. The electric power generated by the generator 9 is stored in the batteries 46 and 47. As described above, the vegetable seedling planting machine 1 is provided with a drive transmission path from the engine output shaft 156 to the generator drive shaft 166 so that the generator 9 is driven by the branched engine output. ing. As described above, the first main shaft gear 159 and the first PTO gear 161a are always meshed with each other, and the generator 6 always generates power when the engine 6 is driven.

The traveling body 2 is provided with the ground PTO case 8 as described above, and the ground PTO shaft 36 outputs the ground PTO shaft 36 from the ground PTO case 8.
That is, the traveling machine body 2 is provided with two engine output take-out shafts in addition to the traveling drive by adding the generator drive shaft 166 to the ground PTO shaft 36. For this reason, the vegetable seedling planting machine 1 enables driving of each device constituting the working unit 30 described later, and also enables driving of the generator 9 at the same time.

The main shaft 157 is provided with an auxiliary transmission mechanism for the traveling body 2 so that the traveling body 2 can be switched among three states, forward, backward and neutral. The main shaft 157 is provided with splines at the left and right central portions, and a shifter rotating body 169 is fitted on the main shaft 157 outside the splines so as to be slidable left and right. To the right of the spline portion of the main shaft 157, a second
A main shaft gear 170 is fitted around the main shaft 157 so as to be rotatable relative to the main shaft 157. To the left of the spline portion, a third main shaft gear 171 is similarly fitted around the main shaft 157 so as to be rotatable relative to the main shaft 157. I have. The shifter rotating body 169 has claws on both left and right sides, and the second main shaft gear 170 and the third main shaft gear 171 also have claws 170a and 171a on the shifter rotating body 169 side, respectively. When the claw of the shifter rotator 169 and the claw portion 170a mesh with each other, the traveling body 2 is in a reverse state, and the shifter rotator 16 is engaged.
When the hook 9 is engaged with the hook 171a of the third main shaft gear 171, the traveling body 2 is in the forward state. When the pawl of the shifter rotating body 169 does not mesh with any of the pawl portions 170a and 171a, the traveling body 2 is in a neutral state in which the traveling machine body 2 stops.

A transmission shaft 172 is provided below and below the main shaft 157.
Is pivotally mounted on the casing 158, and the transmission shaft 1
72 is provided with a main transmission mechanism. The main transmission mechanism enables switching among three states of high speed, medium speed, and low speed when the traveling body 2 moves forward. At the left end of the transmission shaft 172, a first transmission gear 173 is fixedly mounted.
The transmission gear 173 and the third main shaft gear 171 mesh with each other. In the case of the above-mentioned forward state, the shifter rotating body 16 is used.
9 and the claw portion 171a mesh with each other to form the third spindle gear 1
71 is fixed to the main shaft 157, and the engine output is transmitted to the first transmission gear 173 to rotate.

On the right side of the first transmission gear 173, a second transmission gear 174 is fitted so as to be rotatable relative to the transmission shaft 172. Further, the transmission shaft 172 is provided with a spline on the outer periphery on the right side of the second transmission gear 174, and the shifter rotating body 175 is fitted to the transmission shaft 172 outside the spline so as to be slidable left and right. The shifter rotating body 175 is a double gear, and includes a shifter middle speed gear 175a on the left and a shifter low speed gear 175b on the right. The second transmission gear 174 has an internal tooth 1 inside the shifter rotor 175.
74a are formed so that the medium-speed gear 175a can be meshed. Then, the medium-speed gear 175a and the second
By meshing with the transmission gear 174, power from the engine 6 can be transmitted to the second transmission gear 174.

In front of and below the transmission shaft 172, the traveling two shafts 1
76 is pivotally mounted on the casing 158, and a first traveling two-axis gear 177 and a second traveling
A traveling two-axis gear 178 and a third traveling two-axis gear 179 are fixedly provided. The first traveling biaxial gear 177 is a double gear, and includes a left high-speed gear 177a and a right medium-speed gear 177b.
It is composed of The shifter rotating body 175 moves to the left, and the internal teeth 174a and the shifter medium speed gear 175a are moved.
Meshes with the second transmission gear 174 and the high-speed gear 17.
The engine output is transmitted to the traveling two shafts 176 via the transmission shaft 7a. This is the high speed state of the traveling body 2. When the shifter rotating body 175 slides on the transmission shaft 172 and the shifter middle speed gear 175a and the middle speed gear 177b mesh with each other, the engine output is transmitted through the shifter rotating body 175 to the traveling two shafts 176. Is transmitted to This is the middle speed state of the traveling body 2. The third traveling biaxial gear 179 is
It is a continuous gear, and is composed of a left low-speed gear 179a and a right reverse gear 179b. The shifter rotator 175
Slides on the transmission shaft 172, and the shifter low speed gear 17
When the low speed gear 5b and the low speed gear 179a engage with each other, the engine output is transmitted through the shifter rotating body 175 to the traveling two shafts 179a.
6 is transmitted. This is the low speed state of the traveling body 2.

The second main shaft gear 170 and the low speed gear 1
79b is meshed with the second
The engine output from the traveling two shafts 1 via the main shaft gear 170
76.

Below the traveling two shaft 176, a traveling three shaft 180 is pivotally mounted on the casing 158, and a traveling three shaft gear 181 is fixed to the traveling three shaft 180 inside the casing 158. I have. And the traveling three-axis gear 18
1 meshes with a second traveling biaxial gear 178 of the traveling biaxial 176. The traveling three shaft 180 is connected to the casing 158.
It extends to the left and right, and on the right is the ground PTO
The case 8 penetrates. The left and right ends of the traveling three shafts 180 are inserted into the chain cases 10 and 11, and the rear wheels 5.5 are driven by the engine output via the chains in the chain cases 10 and 11. I have.

As described above, the traveling three shafts 180 penetrate the ground PTO case 8 and are pivotally mounted on a casing 187 of the ground PTO case 8. A first input gear 182 is fitted on the traveling three shaft 180 so as to be relatively rotatable inside the ground PTO case 8. A double gear is fixedly mounted on the outer periphery of the shaft of the first input gear 182, and the double gear is a second input gear 183.
And a third input gear 184.

On the traveling three shaft 180, the traveling three shaft 180 is connected to the casing 1 from the right end of the first input gear 182.
A spline is provided up to a bearing 188 pivoted on 87. A slider 18 is placed on the spline.
5, the slider 185 is configured to be slidable left and right on the spline. A biasing spring 186 is externally fitted on the spline, and both ends of the biasing spring are connected to the slider 185 and the bearing 18 respectively.
8, the biasing spring 186 is connected to the slider 18.
5 is urged to the left.

The right end of the first input gear 182 has a claw 1
The slider 185 is provided with a claw portion 185a at the left end thereof, and the claws constituting these claw portions are configured to be able to mesh with each other. Further, these pawls are formed so as to mesh with each other only when the traveling triaxial shaft 180 rotates forward (at the time of the forward movement), and to slide when the reverse rotation (at the time of the backward movement). As described above, the first input gear 182 and the slider 1
Reference numeral 85 designates a claw clutch mechanism functioning as a one-way clutch, so that power transmission to the ground PTO shaft 36 on the output side of the ground PTO case 8 is cut off when the traveling machine body 2 moves backward.

The shifter shaft 1 is arranged in parallel with the traveling three shafts 180.
89 is provided in the casing 187. A ball clutch mechanism is provided on the left part of the shifter shaft 189, and a ball detent mechanism is provided on the right part of the shifter shaft 189.

A shift shaft 190 formed in a cylindrical shape is fitted on the left part of the shifter shaft 189 so as to be rotatable relative to the shifter shaft 189, and the shift shaft 190 is attached to the casing 187. It is pivoted. Transmission shaft 190
Above, three rows of ball clutches 191, 192, 193
, A low-speed gear 194, a medium-speed gear 195, and a high-speed gear 196 are externally fitted to be freely disengageable. Also, the low-speed gear 194, the medium-speed gear 195, and the high-speed gear 196 are respectively connected to the first input gear 182 and the second input gear 1 in order.
83, meshing with the third input gear 184. The shifter shaft 189 has the ball clutches 191 and 192.
A projection 189a for selectively engaging the gear 193 is provided, and a ball can be slid in the internal gear of the low-speed gear 194, the medium-speed gear 195, the internal gear of the high-speed gear 196 and the hole of the transmission shaft 190, The shifter shaft 189 having the projection 189a is slidable in the axial direction. Then, when the shifter shaft 189 slides with respect to the transmission shaft 190, one of the balls of the ball clutches 191, 192, 193 is pushed out of the hole of the transmission shaft 190 by the projection 189a, and the low-speed gear 194, Speed gear 195,
A ball clutch is formed so as to straddle both the internal teeth of the high-speed gear 196 and the hole. As described above, the ball clutch mechanism is provided in the ground PTO case 8, and the output of the ground PTO shaft 36 can be changed by the ball clutch mechanism.

At the right part of the shifter shaft 189, the support 1
97 is fitted around the shifter shaft 189, and the support 1
Reference numeral 97 is fixed to the casing 187. Also,
The support 197 is provided with a ball detent 198. A biasing spring 199 is inserted into a perforation hole provided inside the support body 197, and the ball detent 198 is biased by the biasing spring 199 to move the ball detent 198 to the shifter shaft. 189. The shifter shaft 189 has three detent portions 189b and 189b according to the selectable number of shifts.
189b is provided. And the detent section 1
The ball detent 198 is locked to 89b so that the shifter shaft 189 can be held at the shift position. As described above, the ball detent mechanism is provided in the ground PTO case 8, and the gear stage in the ground PTO case 8 is changed by the ball detent mechanism.
It can be fixed freely.

The ground PTO shaft 36 extends forward from the ground PTO case 8, and a rear portion of the ground PTO shaft 36 is supported by the casing 187. At the rear end of the ground PTO shaft 36, a ground PTO gear 200 is fixed. A transmission gear 190a is formed at the right end of the transmission shaft 190, and the transmission gear 190a and the ground PTO gear 2 are formed.
00 is engaged. The power shifted by the ball clutch mechanism can be output from the ground PTO shaft 36.

Next, the working part drive case 34 for driving the working part 30 will be described. As shown in FIG. 5, the working unit drive case 34 outputs three axes of the table drive shaft 26, the plant body drive shaft 27, and the groove drive shaft 28.
The table drive shaft 26 is a drive shaft for driving the seedling feed table 32, the plant drive shaft 27 is a drive shaft for driving a plant 48, which will be described later, and the groove driving shaft 28 is also a drive shaft 28, which will be described later. It is a drive shaft for driving the working groove blade 49.

The input shaft 37 has a front portion inserted into the casing of the working unit drive case 34, and
A bevel gear 37a is fixed to the front end. A transmission shaft 50 is pivotally supported in the casing in the left-right direction. A bevel gear 50a is fixed to the right end of the transmission shaft 50 and meshes with the bevel gear 37a. In addition, the transmission shaft 50
, A double gear 51 and a holder gear 55 are fixedly provided. The double gear 51 includes a table gear 52 having a small diameter and a groove gear 53 having a large diameter.

In front of the transmission shaft 50, the plant body drive shaft 27
A groove driving shaft 28 is arranged in parallel with the transmission shaft 50, and the plant drive shaft 27 is pivotally supported by the casing. . The implant drive shaft 27 is formed of a cylindrical boss, and the groove drive shaft 28 is inserted into the implant drive shaft 27 so that the groove drive shaft 28 is connected to the implant drive shaft 27.
It is rotatable with respect to. A gear 27a is fixed to the right end of the implant driving shaft 27, and meshes with the holder gear 55. The groove driving shaft 28 extends to the right from the implant drive shaft 27, and the groove drive shaft 28 has a gear 28a fixed to the right of the plant drive shaft 27. The gear 2
Reference numeral 8a meshes with the groove gear 53.

A table transmission shaft 54 is pivotally supported by the casing on the right side of the plant drive shaft 28. The table transmission shaft 54 has a left center axis, and the table transmission shaft 54 has a hollow shaft.
8 is pivotally supported inside the table transmission shaft 54. A gear 54a is fixed to the left end of the table transmission shaft 54,
It is in mesh with the table gear 52. A bevel gear 54b is fixed to the right end of the table transmission shaft 54. The table drive shaft 26 is pivotally supported by the casing, and the table drive shaft 26 is
It extends forward from 4. A bevel gear 26a is fixed to the rear end of the table drive shaft 26, and meshes with the bevel gear 54b.

The axis of the input shaft 37 and the axis of the table drive shaft 26 are provided so as to coincide with the traveling direction of the traveling body 2. Further, the rotation direction of the ground PTO shaft 36 is limited to one direction by the above-described claw clutch mechanism, and the direction is a direction in which the clockwise rotation is made in the rear view. The rotation of the input shaft 37 and the table drive shaft 26 is also clockwise due to the combination of the gears, bevel gears, and the like (the direction of the rotation vector of the input shaft 37 and the table drive shaft 26 is the forward direction of the traveling machine body 2). be equivalent to). Further, the axis of the plant body drive shaft 27 and the groove drive shaft 28 are provided so as to coincide with the horizontal axis perpendicular to the running direction. Then, by the combination of the gears, bevel gears, and the like, the rotation direction of the planter drive shaft 27 and the groove driving shaft 28 turns right as viewed from the left side (the planter drive shaft 27 and the groove drive shaft 28).
Is equivalent to the rightward direction with respect to the forward direction of the traveling body 2).

The teeth are provided at the same pitch between the holder gear 55 and the gear 27a, between the groove gear 53 and the gear 28a, between the table gear 52 and the gear 54a, and the teeth are provided on the outer periphery of the gears. . These gears are gear 2
Except for 8a, only a part of the entire outer periphery of the gear is provided with teeth. With this configuration, power is transmitted between the holder gear 55 and the gear 27a, between the groove gear 53 and the gear 28a, between the table gear 52 and the gear 54a, and between the gears when the mutual gears mesh. When the gears do not mesh, power is not transmitted between the gears. Therefore, the continuous rotation of the input shaft 37 is converted into intermittent rotation by the working unit drive case 34, and the intermittent rotation is output from the plant drive shaft 27, the groove drive shaft 28, and the table drive shaft 26. As described above, the power of the ground PTO shaft is transmitted to the input shaft 37, and the working unit drive case 34 is a gear case.

FIGS. 6 (a) to 6 (e) show how the gears 27a, 28a and 54a rotate as the transmission shaft 50 rotates. The state shown in FIG. 6A is set as a reference (0 rotation), and FIGS. 6B to 6E show the rotation speeds of other gears according to the rotation of the transmission shaft 50. As shown in FIG. 6 (a) to FIG. 6 (e), the transmission shaft 50 is rotated by 1/4 turn.

The number of rotations of the gears 27a and 28a is equal to the number of rotations of the plant body drive shaft 27 and the groove drive shaft 28.
Since the number of teeth of the bevel gear 54b and that of the bevel gear 26a are the same, the rotation speed of the gear 54a and the table drive shaft 26
Are also equal. In addition, the plant drive shaft 27, the groove drive shaft 28, and the table drive shaft 26 are all the transmission shaft 50.
More power. For this reason, depending on the ratio of the number of teeth and the gear diameter between the holder gear 55, the groove gear 53, and the table gear 52 and the gears 27a, 28a, and 54a fixed to the transmission shaft 50, the plant body drive shaft 27, The rotation ratio between the groove drive shaft 28 and the table drive shaft 26 is determined.

As shown in FIG. 7, in this embodiment, the holder gear 55 is provided with 30 teeth on the entire outer periphery.
Only four are provided. On the other hand, the gear 27a is provided with 14 teeth where 15 teeth are provided on the entire outer periphery, and one of the 14 teeth is a wide tooth 27b, and the wide tooth 27b
Is formed in an arc shape so that the outer surface of the holder gear 55 is in sliding contact with an arc surface 55a of the outer periphery of the holder gear 55 where no teeth are provided. Therefore, the gear 27a and the holder gear 55
When the gear teeth do not mesh with each other, even if the arc surface 55a rotates, the wide teeth 27b do not rotate and the gear 27a does not rotate. The groove gear 53 is provided with only 17 teeth where 36 teeth are provided on the entire outer periphery. Gear 2 for
8a is provided with nine teeth over the entire outer periphery. The table gear 52 has only seven teeth where 30 teeth are provided on the entire outer periphery. On the other hand, the gear 54a is provided with 14 places where 16 teeth are provided on the entire outer periphery,
Two of the teeth are wide teeth 54c. The gear 54a is prevented from rotating by the wide teeth 54c.
7a, the table gear 52 has an arc portion 52
a is provided.

Therefore, the gear 27 when the transmission shaft 50 makes one rotation is determined by the ratio of the number of gear teeth and the gear diameter.
The rotation of a, 28a and 54a is as shown in FIG. That is, the holder gear 5 fixed to the transmission shaft 50
5. When the groove gear 53 and the table gear 52 make one rotation, the gear 27a makes one rotation, the gear 28a makes two rotations, and the gear 54a makes a half rotation.

The rotation of each gear will be described with reference to FIGS. 6 (a) to 6 (d). As described above, on the basis of the state of FIG. 6A, the gear 28a is rotated in a state where the transmission shaft 50 shown in FIG.
That is, the groove drive shaft 28 makes one rotation. When the power transmission shaft 50 shown in FIG.
That is, the plant drive shaft 27 makes one rotation, and the groove drive shaft 28
Has made one more revolution, for a total of two revolutions. Thereafter, until the transmission shaft 50 makes another 2/4 rotation, the plant body drive shaft 27
And the groove drive shaft 28 stops. Table drive shaft 5
4 remains stopped at this stage. In the state where the transmission shaft 50 shown in FIG.
That is, the table drive shaft 54 makes a half turn.
Thereafter, the table drive shaft 54 remains stopped until the transmission shaft 50 rotates 3/4.

As will be described in more detail later, the transmission shaft 5
One rotation of 0 is one cycle of planting by the planting section 31. During the one cycle, the plant drive shaft 27 makes one rotation during the half rotation of the transmission shaft 50 and remains stationary during the remaining half rotation of the transmission shaft 50. During the one cycle, the table drive shaft 54 is stationary during the half rotation of the transmission shaft 50, and then rotates one half while the transmission shaft 50 rotates one quarter of the rotation. It is stationary during / 4 rotation. During the one cycle, the groove driving shaft 28 is driven by the transmission shaft 50.
2 rotations during 1/2 rotation of
It is stationary during / 2 rotation.

Now, the seedling feed table 32 will be described. As shown in FIGS. 8 to 10, the seedling feed table 32 includes a mounting case 56 and a transport device 82. The mounting case 56 is a means for mounting the sweet potato seedlings on the vegetable seedling planting machine 1, and is formed in a box having an open top so that the sweet potato seedlings can be mounted in the mounting case. ing. The conveying device 82 includes two belts as conveying means for sweet potato seedlings. The first belt is sponge belts 80 and 81, and the second belt is a seedling holder belt 58. The conveying device 82 is provided with the sponge belt 80.
The sweet potato seedlings are pinched and conveyed by 81 and the seedling holder belt 58, and the sweet potato seedlings are supplied to the planting section 31. The sponge belts 80 and 81 are formed of a soft material such as a synthetic resin. The sponge belts 80 and 81 are disposed so as to abut on the seedling holder belt 58 as described later.

The sponge belts 80 and 81 are the transport belt 5
7, and the sponge belts 80 and 81 are fixed to the conveyor belt 57, and these belts rotate integrally. The transport belt 57 is a toothed belt provided with teeth on the inner peripheral surface, and the transport belt 57 is wound around a transport belt drive shaft 59 and driven shafts 60 and 61. Gears are fixedly provided at both ends of the transport belt drive shaft 59 and the driven shafts 60 and 61, respectively, and the gears mesh with teeth on the inner peripheral surface of the transport belt 59. The transport belt 57 is driven by the rotation of the transport belt drive shaft 59. The seedling holder belt 58 is also a toothed belt, and the seedling holder belt 58 is wound around a seedling holder belt drive shaft 63 and driven shafts 64 and 65. Gears are also fixedly provided at both ends of the seedling holder belt drive shaft 63 and the driven shafts 64 and 65, and the gears mesh with teeth on the inner peripheral surface of the seedling holder belt 58. The rotation of the seedling holder belt drive shaft 63 causes the seedling holder belt 58 to rotate.
Is driven.

The table casing 62 forming the gear case of the transfer device 82 is disposed so as to cover the front and rear portions of the transfer belt 57 and the right portion of the seedling holder belt 58. The transport belt drive shaft 59, the driven shafts 60 and 61, the seedling holder belt drive shaft 63, and the driven shaft 64 are pivotally supported on the table casing 62. Also,
A seedling holder belt support 66 extends leftward from the table casing 62, and a driven shaft 65 is pivotally supported at the left end of the seedling holder belt support 66.

The seedling feed table 32 is provided with a support frame 67 bent in a substantially U-shape. Both ends of the support frame 67 are fixed to the front surface of the table casing 62 and the rear surface of the seedling holder belt support base 66. I have. And
The rear end of the support frame 67 is fitted into the support frame 33a, and the seedling feed table 3 is held by the support frame 33a.
2 Supports the rear. In addition, brackets 68
The front end of the planting frame 33 and the table casing 6
2 and a lower front portion thereof, and the planting frame 33 supports a front portion of the seedling feeding table 32.

At the right end of the support frame 67, a bracket 74 is provided.
・ 74 is fixed. Posts 76, 76 connect the brackets 74, 74 and the mounting case 56 described above,
The columns 76 support the mounting case 56. Further, a support base 75 connects the columns 76 and the mounting case 56 to reinforce the support of the mounting case 56 by the columns 76.

The table input shaft 69 as a drive input shaft of the seedling feed table 32 is connected to the table casing 6 from behind.
2 Inserted at the bottom. And the table input shaft 69
The table drive shaft 26 and the table drive shaft 26 are configured to be able to transmit power via a connection shaft 70. The table input shaft 69 and the connection shaft 70 and the connection shaft 70 and the table drive shaft 26 are connected via universal joints.

At the front end of the table input shaft 69, a seedling holder belt sprocket 71 and a transport belt gear 72 are fixed. A gear 59a is fixedly provided at the front end of the transport belt drive shaft 59, and the gear 59a and the transport belt gear 72 are engaged. And the table input shaft 69
The conveyor belt 57 is driven by the power from the motor. A sprocket 63a is fixed to the front end of the seedling holder belt drive shaft 63, and the sprocket 63a and the seedling holder belt sprocket 71 are wound by a chain 73. The seedling holder belt 58 is driven by the power from the table input shaft 69. With the above driving configuration, the transport belt 57 rotates clockwise in front view, and the seedling holder belt 58 rotates counterclockwise. As described later, the sweet potato seedlings placed on the seedling holder belt 58 are drawn between the transport belt 57 and the seedling holder belt 58, and are nipped and transported by both belts.

The table drive shaft 26 rotates intermittently. In one cycle of the above-described planting, the table drive shaft 26 is stationary for one rotation of the plant drive shaft 27, and then the transmission shaft 50 is turned off. The table drive shaft 26 makes a half turn during the 回 転 rotation, and then stops again for a time during which the transmission shaft 50 makes a ／ turn. The implant drive shaft 27 is a drive shaft for driving the implant 48 of the planting section, as described later. As described above, the drive timing of the transport device 82 and the transplanted body 48 is adjusted by the working unit drive case 34, and the table drive shaft 26 rotates after the rotation of the plant drive shaft 27. . With the above configuration, the sweet potato seedlings can be appropriately supplied from the seedling feeding table 32 to the planting claws 88 provided on the plant. The planting claws 88 will also be described later.

The intermittent rotation of the table drive shaft 26 also drives the transport belt 57 and the seedling holder belt 58 intermittently. The distance (one pitch) traveled by the transport belt 57 and the seedling holder belt 58 per 1/2 rotation of the table drive shaft 26 is 80 mm in the present embodiment.

At the time of planting sweet potato seedlings, the worker is sitting on the driver's seat 15 and supplies the sweet potato seedlings to the planting section 31 using the seedling feed table 32 as described above. At this time, the worker takes out one sweet potato seedling from the placing case 56 and places the sweet potato seedling on the seedling holder belt 58 on the left side of the placing case 56. The sweet potato seedlings are placed so as to extend to the front side from the seedling holder belt 58 so that the root is on the rear side (operator side). this is,
This is because by positioning the root side, the sweet potato seedling can be properly delivered to the planting section 31 described later.

On the outer peripheral surface of the seedling holder belt 58, seedling holders 77 are provided. Seedling holder 77.7
.. Are provided at intervals of the one pitch along the rotation direction of the seedling holder belt 58. The seedling holders 77 are provided in parallel at the front and back so as to be perpendicular to the rotation direction of the seedling holder belt 58, and form seedling holder rows 78 and 79, respectively. The interval between the seedling holders 77 constituting the seedling holder row 78 (79) is the one pitch interval. As described above, the one pitch is a distance traveled by the seedling holder belt 58 during one cycle of the planting. For this reason, one sweet potato seedling is held at the lower end of the transfer device 82 in each cycle of planting. Then, the planting claws 88 of the planting section 31 can pinch the sweet potato seedlings so that one sweet potato seedling is supplied from the seedling feed table 32 to the planting section every cycle.

The seedling holder 77 constituting the seedling holder row 79
77 are provided to extend rearward from the seedling holder belt 58. Seedling holders 77
An upper edge portion is provided at the lower rear end of the rear end. For this reason, when the operator places the sweet potato seedling on the seedling holder belt 58, the sweet potato seedling is arranged so that the root end thereof is in contact with the edge, so that the root end position can be easily adjusted. .

The cross section of the seedling holder 77 has a shape as shown in FIG. 11, and the seedling holder 77 comprises a semi-cylindrical portion 77a and an extension 77b. The semi-cylindrical portion 77a has a substantially U-shaped cross section by cutting out a part of a cylinder. When the operator places the sweet potato seedlings on the seedling holder belt 58, the sweet potato seedlings are inserted into the semi-cylindrical portion 77a to secure the holding of the sweet potato seedlings. Seedlings are prevented from falling off. The extending portion 77b extends from one end of the semi-cylindrical portion 77a. In the seedling holder row 79, the extending portion 77b is formed in a shape overhanging the seedling holder belt 58. Then, the worker puts the sweet potato seedlings in the semi-cylindrical portion 7.
The extension portion 77b functions as a guide plate for the insertion when the insertion portion 7a is inserted. Therefore, the operator can easily insert the sweet potato seedling into the seedling holder 77.

The seedling holder 77 is formed of a soft material such as a synthetic resin, so that when a sweet potato seedling is inserted into the seedling holder 77, the sweet potato seedling is not damaged.

As described above, the sponge belts 80 and 81 are wound around the outer circumference of the transport belt 57. The sponge belts 80 and 81 are disposed so as to contact the seedling holder belt 58,
The sweet potato seedlings placed on the seedling feed table are pinched and transported from the upper portion to the lower portion of the seedling sending table. Also, the seedling holders 77 provided on the seedling holder belt 58
The sponge belts 80 and 81 are provided on the transport belt 57 at intervals by the width of the seedling holder 77 so as not to compress the sponge. The conveyor belt 57 and the sponge belts 80 and 81 are located on the left side of the seedling holder belt 58 (the seedling holder belt 58
Side). Then, the sweet potato seedlings placed on the seedling holder belt 58 are easily sandwiched between the sponge belts 80 and 81 and the seedling holder belt 58 to prevent a shift in taking in the sweet potato seedlings.

Next, the planting section 31 will be described. As shown in FIGS. 12 and 13, the transplant 48 is fixed to the transplant drive shaft 27, and the transplant 48 includes a seedling supply unit 83, a claw support guide 84, and a groove. And a blade guide 85. The seedling supply unit 83 includes the plant drive shaft 27.
Is formed in an arc shape with the center as the center, so that the planting posture of the seedling is stabilized as described later. The claw support guide 84 has a claw support 86 therein, and the claw support 86 is provided with a plurality of rollers 87. The rollers 87, 87...
4, so that the planting claw 88 slides inside the claw support 86 so as to be able to advance and retreat with respect to the inside and outside directions of the plant drive shaft 27. Groove blade guide 85
As described later, the groove guide blade 49 is guided so as to be able to advance and retreat in the inward and outward directions. In the following description of the planting portion 31, unless otherwise specified, the inside is the inside of the plant drive shaft 27, the outside is the outside of the plant drive shaft 27, and the inside and outside directions are the plant drive shaft 27. 27 inward and outward directions.

The claw support 86 is provided with an insertion groove 86a extending from the outside to the inside. A sliding shaft 88a is fixed to the planting claw 88, and by sliding the sliding shaft 88a along the insertion groove 86a, the planting claw can move forward and backward in the inward and outward directions. Like that.

The planting claws 88 are formed by bending a plate-like steel material so as to have a substantially U-shape as a whole, and are constantly biased so that the ends are separated from each other. FIG.
As shown in FIG. 14A, the state in which the U-shape approaches the V-shape due to the separation of the ends is referred to as the open state of the planting claws 88. Conversely, as shown in FIG. Is in a closed state of the planting claw.

The planting claw 88 is formed so that the outer end portions of the planting claw 88 are parallel and close to each other in the closed state, so that the sweet potato seedling can be pinched by the tip portion.
In the open state, the outer tip of the planting nail 88 is separated so that the sweet potato seedling held by the planting nail 88 can be released.

At the outer end of the claw support 86, two shaft-like members penetrating in a direction perpendicular to the drilling direction of the insertion groove 86a and parallel to the sliding shaft 88a are provided. The shaped member constitutes a sandwiching portion 89. In addition, the planting claw 88
The bend described above is not uniform except for the tip,
It has a projection 88b and a recess 88c. Therefore, by sliding the slide shaft 88a with respect to the claw support 86, the open / close state is changed. When the sliding shaft 88a is moved outward, that is, when the planting claw 88 is moved outward from the claw support 86, the concave portion 88c of the planting claw 88 hits the shaft-like member, and is opened. . On the other hand, when the planting claw 88 is moved inward from the claw support 86, the convex portion 88b of the planting claw 88 hits the shaft-like member, and is closed. As described above, since the projection 88b and the recess 88c are formed on the planting claw 88, the position at which the shaft-like member clamps the planting claw 88 is shifted from the projection 88b to the recess 8c.
When changing to 8c, the planting claw 88 immediately shifts to the open state. That is, the planting claws 88 can change the open / close state in a sensitive manner to the position change of the planting claws.

As described above, the open / close state of the planting claw 88 is changed by moving the planting claw 88 in and out of the claw support 86. As will be described later, even when the position of the planting claw 88 is fixed and the claw support 86 is moved in and out, the planting claw 88 and the claw support 86 have the above-described configuration. The open / close state of the planting nail 88 changes. That is, the planting claw 88 and the claw support 86 are configured to change the open / close state of the planting claw 88 by changing the relative distance between the planting claw 88 and the claw support 86. I have.

Two cam bodies are fixed to the working unit drive case 34 on the extension side of the plant drive shaft 27.
The two cam bodies are a planting claw cam 90 and a claw support cam 91. The planting claw cam 90 and the claw support cam 91 are arranged in this order in the axial direction of the plant drive shaft 27. Drive case 34
The cams control opening and closing of the planting claws 88 as described later. A stopper 92 is fixedly provided at the inner end of the planting claw 88, and a roller 93 is pivotally mounted on the stopper 92 on the side where the working unit drive case 34 is provided. The roller 93 comes into contact with the outer periphery of the planting claw cam 90, and the positioning of the planting claw 88 is performed according to the outer peripheral shape of the planting claw cam 90. Further, one end of an urging spring 94 is hooked on the stopper 92 on the extension side of the implant driving shaft 27. The other end of the urging spring 94 is hooked on the claw support 86, and the urging spring 94 urges the planting claw 88 so as to close the planting claw 88. On the other hand, the stopper 9 is also provided at the inner end of the claw support 86.
5 is fixed. A roller 96 is pivotally mounted on the stopper 95 on the side where the working unit drive case 34 is provided. The roller 96 comes into contact with the outer periphery of the claw support cam 91, and the claw support 86 is positioned according to the outer shape of the claw support cam 91. Further, one end of a biasing spring 97 is hooked to the stopper 95 on the side of the extension of the implant driving shaft 27. The other end of the biasing spring 97 is hooked on the implant driving shaft 27,
The urging spring 97 separates the pawl support 86 from the implant driving shaft 27.
It is urged to the side. With the above configuration,
A roller 93 pivotally mounted on the planting claw 88 is a driven member with respect to the planting claw cam 90, and a roller 96 pivotally mounted on the claw support 86 is a driven member with respect to the claw supporting cam 91. I am trying to be. Movement is restricted by these cam bodies, so that the planting claw 88 and the claw support 86 advance and retreat inward and outward, so that the planting claw 88 opens and closes.

The outer peripheral shapes of the planting claw cam 90 and the claw support cam 91 are formed as shown in FIG. Inside the planting claw cam 90 and the claw support cam 91, the inside of each cam body is perforated so that the plant drive shaft 27 can penetrate those cam bodies. The plant drive shaft 27 rotates so that the seedling supply unit 83 of the plant 48 moves below the plant drive shaft 27 in the forward direction with respect to the machine running direction. This rotation direction is the direction of the arrow shown in FIG. 12 (clockwise), and at this time, the direction of travel of the aircraft is left. For this reason, the roller 9 pivotally mounted on the planting claw 88
3. The roller 96 pivotally mounted on the pawl support 86 also rotates in the same direction. This rotation direction is a clockwise direction in FIG. The open / close state of the planting nail 88 is determined by the relative distance between the planting nail 88 and the nail support 86 as described above. The relative distance is equal to the relative distance between the roller 93 and the roller 96.

About 3/4 of the planting claw cam 90 is a perfect circle 90a.
And about 1/2 of the claw support cam 91 is formed as a perfect circle 91a. When the rollers 93 and 96 maintain the distance L corresponding to the difference between the radius of the perfect circle 91a and the radius of the perfect circle 90a as the relative distance, the planting claw 88 is closed. At this time, in one cycle of the planting, the planting claws 88 are in a state of holding the sweet potato seedling. Therefore, when the rollers 93 and 96 are at the position P1 in FIG. 15, the planting claw 88 is in the closed state. Here, the position P1 and the positions P2 and P3 described below indicate the rotational positions of the rollers 93 and 96 with respect to the center of the plant drive shaft 27. When the rollers 93 and 96 rotate to the position P2, the relative distance is maintained by the distance L, so that the roller 93 is closed. Here, the planting claw 88 is in a state of being rotated downward from above while holding the sweet potato seedling. At the position P3, the outer periphery of the claw support cam 91 is
The rollers 93 and 96 are formed further inside, and the relative distance between the rollers 93 and 96 is longer than the distance L. For this reason, the planting nail 88
Is open. At this time, the planting nail 88 releases the sandwiched sweet potato seedling, and the planting of the sweet potato seedling is started by the planting nail 88. From the position P3 to the position P4, the outer periphery of the claw support cam 91 is formed inside the perfect circle 91a, and the rollers 93 and 96 are moved from the position P3 to the position P4.
During the rotation to 4, the planting claw 88 is in the open state, and is closed as it approaches the position P4. Then, the planting claw is prevented from being closed again before the planting started at the position P3 is completed. From the position P4 to the position P5, the outer circumference of the planting claw cam 90 and the claw support cam 91 is formed such that the relative distance is once longer than the distance L, and is thereafter shortened to coincide with the distance L again. ing. During the rotation of the rollers 93 and 96 from the position P4 to the position P5, the planting claw 88 is gradually opened and then closed. Also, between the position P4 and the position P5, the outer circumference of the planting claw cam 90 is
a, so that the planting claws 88 move outward. That is, the planting claw 88 is close to the seedling feed table 32 in the open state, and the rollers 93
6 begins to pinch the sweet potato seedling immediately before reaching the position P5, and when the rollers 93 and 96 reach the position P5, the planting claws 88 are closed and the sweet potato seedling is firmly held. Therefore, when the rollers 93 and 96 come to the position P1 from the position P5, as described above, the planting claws 88 hold the sweet potato seedlings. Further, at the position P1, the outer circumference of the cam 90 of the planting claw 88 is located on the perfect circle 90a, so that the planting claw 88 retreats inward and returns to the state before the position P4.

In one cycle of the planting, as described above, the working unit drive case 34 is configured such that the plant drive shaft 27 rotates intermittently. In the first half of the cycle, the implant drive shaft 27 makes one rotation in the first half cycle, and remains stationary during the second half cycle. At the start and end of this one rotation, the rollers 93.9 are used.
6 is at position P1 in FIG. The implant claw cam 90 and the claw support cam 91 each have a detent portion 90b.
91b is provided so that the rollers 93 and 96 are stopped by the detent portions 90b and 91b. When the implant driving shaft 27 is stationary, the rollers 93.9
6 prevents the planting claw cam 90 and the claw support cam 91 from swinging around the outer peripheral surface to move the planting claw 88, the claw support 86, and the like.

A guide body 98 is fixed to the support frame 33a of the planting section 31. The guide body 98 is formed in an arc shape centered on the plant drive shaft 27 so that the side surface of the guide body 98 follows the locus R through which the tip of the planting claw 88 passes. The cross-sectional shape of the guide body 98 is formed in a U-shape. As shown in FIG. 13, the guide body 98 is gradually formed from the upper side to the lower side in the rotation direction along the rotation direction of the planting claw 88. The width of the body wall is reduced. Then, the planting claws 88 for holding the sweet potato seedlings are pressed from the left and right when passing through the inside of the guide body 98, so that the leaves of the sweet potato seedlings fit within the planting groove width described later. The inside of the guide body 98 is different from the above-described definition and is inside the guide body 98.

The guide member 98 includes a plurality of rollers 99.
And the rollers 99, 99 ...
Is disposed so as to substantially contact the locus R. The rollers 99 are formed of a soft material such as a sponge and the like, and guide the sweet potato seedlings being nipped and conveyed by the planting claws 88 from the outside so that the sweet potato seedlings are not damaged. .

The seedling supply unit 83 includes plates 83a and 83a disposed on both left and right sides, and the plates 83a and 83a.
and a soft body 83b disposed between the two. The outer peripheral shape of the soft body 83b is formed in an arc shape, and the sweet potato seedling to be nipped and conveyed by the planting claw 88 is supplied to the seedling supply unit 83.
Is supported from the inside. The seedling supply unit 83 stabilizes the planting posture of the sweet potato seedling by the planting claws 88.

The groove blade 49 is fixed to the blade support 100, and the blade support 100 is inserted into the insertion shaft 10 extending in the left-right direction.
1 is fixed. The grooved groove guide 85 has an insertion hole 8
5a are provided along the inward and outward directions, and the blade support 1
00 is slidable along the insertion hole 85a.

The groove drive shaft 28 is connected to the plant drive shaft 2.
7, and the groove driving shaft 28 is disposed inside. The groove driving shaft 28 and the groove blade 4
9 is connected via a crank mechanism 102. A crank arm 103 is fixed to the groove driving shaft 28,
With the rotation of the groove drive shaft 28, the crank arm 10
3 is made to rotate. The crank arm 103
At one end, a link 104 is pivotally mounted at one end of the link 104, and the other end of the link 104 is fixed to a fulcrum shaft 105. The fulcrum shaft 105 is pivotally mounted on the blade support 100. The crank mechanism 102 is configured as described above, and the crank arm 103 around the groove driving shaft 28 is formed.
Of the insertion shaft 101 along the insertion hole 85a.
Is converted into a reciprocating motion. And the crank mechanism 10
Reference numeral 2 indicates that the groove 49 is moved inward and outward as described later.

In one cycle of the planting, as described above, the drive shaft 28 makes two rotations while the drive shaft 27 makes one rotation. When the implant driving shaft 27 is stationary, the groove driving shaft 28 is also stationary, and the driving and stopping periods are the same between the two shafts so that the timing is adjusted.

When the groove blade 49 rotates to the vicinity of the lower end, the crank mechanism 102 rotates the groove blade 49.
Is made to move outward from the trajectory R. The crank mechanism 102 cuts the upper surface of the furrow where the sweet potato seedlings are to be planted, thereby forming a groove. On the other hand, when the groove blade 49 is separated from the vicinity of the lower end by its own rotation, the crank mechanism 102 moves the groove blade 49 inward from the locus R.
With the above-described configuration, the grooving blade 49 cuts the upper surface of the ridge in the one cycle to form a groove, and the groove has a length that allows the sweet potato seedling to be properly planted. The planting claw 88 is configured to plant a sweet potato seedling into the groove after the groove is formed.

In order for the cutting blade 49 to rotate together with the implant 48 and move back and forth with respect to the locus R, the implant 4
It is sufficient that the difference between the rotation speed of the implant 48 and the rotation speed of the crank arm 103 during one rotation of the rotation 8, ie, the relative rotation speed is one rotation. That is, the plant 48
It is only necessary that the cutting groove blade 49 makes two rotations or stops (zero rotation) during one rotation. In the above-described reciprocating configuration of the groove-forming blade 49, the groove-forming drive shaft 28 is rotated twice while the implant 48 rotates once, and the crank arm 103 is rotated. For this reason, the groove driving shaft 28 is configured to be fixed to the traveling body 2, and even when the crank arm 103 is stopped, the relative rotation speed is still one rotation, and the action described above with respect to the groove blade 49 is performed. can get. Therefore, the vegetable seedling planting machine 1 may be configured so that the crank arm 103 stops.

As shown in FIG. 16 (b),
The cross-sectional shape of the working groove blade 49 as viewed from the outside is formed in a V-shape so that the groove is wide enough to plant a sweet potato seedling. Also, the V-shaped tip 49a
Is provided with a blade, and when the upper surface of the ridge on which the sweet potato seedlings are to be planted is covered with a multi-film, the forming groove blade 49 can first perform the multi-film cutting prior to the formation of the groove. I have to.

The groove drive shaft 28 rotates so as to move in the forward direction with respect to the machine running direction on the cutting action side of the upper surface of the ridge forming a groove in contact with the upper surface of the ridge. In other words, similarly to the rotation of the above-described implant driving shaft 27, the groove 49 is rotated below the implant driving shaft 27 in the same direction as the machine running direction. Then, the rotation speed at the time when the grooving blade 49 comes into contact with the upper surface of the ridge is increased by the machine running speed. Therefore, the speed at which the groove blade 49 contacts the upper surface of the ridge increases, and the groove blade 49 reliably cuts the multi-film. In addition, the trajectory of the tip of the grooving blade 49 draws a gentle arc by the rotation, and an ideal groove for planting sweet potato seedlings can be formed.

As described above, in the procedure of planting, first, the multi-film cutting and the formation of the groove are performed by the grooving blade 49, and then the sweet potato seedling held by the planting claw 88 is dropped into the groove. Then, the sweet potato seedlings are planted. Then, the planting portion 31 is in a state where the planting claw 88 has advanced slightly forward from the lower end of the locus R, and the rollers 93 and 96 are in the position P3.
In such a position, the sweet potato seedlings are released. For this reason, as shown in FIG. 17, the sweet potato seedlings are planted in a ship bottom shape by the planting section 31.

Next, an automatic height control mechanism of the planting section 31 will be described. In order to keep the planting depth of the sweet potato seedlings by the planting section 31 constant even when the ridges have irregularities, the vegetable seedling planting machine 1 is provided with an automatic height control mechanism for the planting section 31. ing. The automatic height control mechanism includes ridge height detecting means 106 for detecting the height of the ridge, and driving means 44 for moving the planting section 31 up and down.

As shown in FIG. 18, the planting frame 3
3, a sensor frame 107 extends forward and downward from the front, and a support 108 is fixedly provided at the lower end of the sensor frame 107. The support 108 is provided with a pivot 111, and the left and right sides of the support 108 extend the roller arms 109 and 109 rearward, and the pivot 111 extends the support arms 112 forward. . The sensor frame 107 has a plate 113 extending downward, and an urging spring 114 connects the plate 113 and the support arm 112. At the rear end of the roller arm 109, a sensor roller 110 is pivotally provided between the roller arms 109. The sensor roller 110 is supported at a constant height by the urging of the urging spring 114 so that the sensor roller 110 contacts the upper surface U of the ridge.

At the lower part of the plate 113, a potentiometer 115 is provided.
Reference numeral 5 extends the detection arm 116 from the rotating portion. The roller arms 109 have a U-shaped sensor frame 117 suspended therefrom.
The upper end of the arm 7 is in contact with the lower end of the detection arm 116. Due to the unevenness of the ridge upper surface U, the sensor roller 1
When the 10 rotates up and down, the sensor frame 117 and the detection arm 116 also move up and down in conjunction with each other, and the potentiometer 115 rotates. That is, the sensor roller 1
The potentiometer 115 is rotated in accordance with the width of the vertical rotation of the potentiometer 10.

As described above, the ridge height detecting means 106 is constituted by the sensor roller 110 and the potentiometer 115. Then, the vertical rotation of the sensor roller 110 is converted into the rotation of the potentiometer 115, so that the potentiometer 115 gives a change in ridge height as its own rotation angle.

As shown in FIGS. 1, 2 and 19, the traveling body 2 is provided with the driving means 44. The driving means 44 includes an electric motor 44a, a cylinder body 44b, and a telescopic rod 44c which extends and contracts with respect to the cylinder body 44b.
It is composed of By driving the electric motor 44a,
The telescopic rod 44c extends and contracts with respect to the cylinder 44bb.

One end of the cylinder body 44b is pivotally supported by the front link 22L.
One end of 4c is pivotally supported by the lower ends of the support plates 40 and 41. Then, the driving means 44 is driven, and the telescopic rod 44c expands and contracts with respect to the cylinder body 44b, thereby rotating the parallel link 21 with respect to the traveling machine body 2 and moving the planting frame 33 up and down. I try to make it. Further, the front link 22R is a gas spring 4
5 is pivotally supported, and the other end of the gas spring 45 is pivotally supported below the support plate 42. And the gas spring 45 supports the weight of the planting part 31,
The gas spring 45 reduces the load applied to the driving unit 44 when the planting unit 31 is raised by the driving unit 44, so that the planting unit 31 moves up and down smoothly.

The vegetable seedling planting machine 1 is provided with a control device, which is connected to the ridge height detecting means 106 and the driving means 44. The control device drives the driving means 44 according to the detection signal obtained by the ridge height detecting means 106, that is, the magnitude of the rotation angle of the potentiometer 115 given by the change in the ridge height. Then, in the vegetable seedling planting machine 1, the control device controls the distance between the upper surface of the ridge and the planting frame 33 to be constant.

Next, a vehicle body horizontal control mechanism for keeping the planting section 31 horizontal will be described. As shown in FIG. 22, the body level control mechanism includes rear bell crank mechanisms 118 and 119 related to rear wheels, front bell crank mechanisms 140 and 141 related to front wheels, and rear bell crank mechanisms 118 and 11.
9 for driving the motor 9. The rotating means 120 is provided with a rear bell crank mechanism 118/119.
Means for rotating the shaft 121 of FIG. The reason why there are two rear bell crank mechanisms 118 and 119 and two front bell crank mechanisms 140 and 141 is that they are provided on the left and right sides of the traveling machine body 2 respectively.

As shown in FIG. 1, a shaft 121 extending left and right is pivotally mounted on the left support plate 40/41 and the right support plate 42. As shown in FIG. 23, the shaft 121 is pivotally supported on the left and right by bosses 122. The bosses 122
The shaft 121 is suspended from the traveling body 2. The left and right centers of the shaft 121 are covered with a cylindrical member 123. A fixed shaft 124 penetrates both the shaft 121 and the cylindrical member 123, and
Reference numeral 4 indicates that both are fixed and cannot be rotated relative to each other.

The rotating means 120 includes an electric hydraulic power source 120.
a, a cylinder body 120b, and a telescopic rod 120c.
Is driven to expand and contract with respect to the cylinder body 120b. The rear end of the cylinder body 120b, the ground PTO case 8, and the body frame 3 are connected to the bracket 12
5 and 126, and the rotation means 120
Are rotatable with respect to the vehicle body frame 3. Also, a bracket 127.1 is provided at the front end of the telescopic rod 120c.
The brackets 127 are fixed to the cylindrical member 123. The bracket 127.1 is expanded and contracted by the expansion and contraction of the telescopic rod 120c.
27 rotates the cylindrical member 123 so that the shaft 121 rotates.

As shown in FIG. 20, a cylindrical portion 128 extends to the left of the transmission case 7, and the chain case 10 pivotally supports the cylindrical portion 128. With this configuration, the chain case 10 is rotatable with respect to the traveling body 2. Here, the cylindrical portion 128 is a casing that covers the output shaft of the traveling drive of the transmission case 7. In addition, the ground PTO
A cylindrical portion 129 extends rightward of the case 8, and the chain case 11 pivotally supports the cylindrical portion 129. With this configuration, the chain case 10 is rotatable with respect to the traveling body 2. Here, the cylindrical portion 129 is a casing that covers the output shaft of the traveling drive of the transmission case 7, similarly to the cylindrical portion 128.

As shown in FIGS. 22 to 24 on the left side of the traveling body 2, the shaft 121 has a crank arm 130.
130 is fixedly provided, and links 131 and 131 are provided at one ends of the crank arms 130 and 130, respectively.
, And the other ends of the links 131 are pivotally supported by the chain case 10. The rear bell crank mechanism 118 is configured as described above, and the rear bell crank mechanism 118 converts the rotational movement of the shaft 121 into a vertical rotation movement of the chain case 10, that is, a vertical reciprocating movement of the rear wheel 5. I am trying to do it. A crank arm 132 is fixedly mounted on the shaft 121, and a link 133 is connected to one end of the crank arm 132 at one end of the link 133. The other ends of the links 133 are pivotally supported by the chain case 11. The rear bell crank mechanism 119 is configured as described above. The rear bell crank mechanism 119 converts the rotational movement of the shaft 121 into a vertical rotation movement of the chain case 11, that is, a vertical reciprocation movement of the rear wheel 5. I am trying to do it.

The crank arms 130, 130
And the crank arms 132 are fixedly mounted at different angles with respect to the shaft 121. For this reason, the chain case 1 does not respond to the rotation of the shaft 121.
The vertical movement of 0.11 is performed in the opposite phase. Specifically, the rotation means 120 is driven to drive the telescopic rod 1.
When the shaft 20c is extended, the shaft 121 rotates clockwise in FIGS. With the clockwise rotation of the shaft 121, the crank arms 130 and 130 rotate to the lower left and rotate the left chain case 10 downward, and the crank arms 132 and 132 rotate to the upper left and rotate to the right. Is turned upward. With the above configuration, the left inclination of the traveling body 2 is corrected by the extension of the telescopic rod 120c, and the traveling body 2 is brought into a horizontal state. When the right inclination of the traveling machine body 2 is to be corrected, the telescopic rod 120c is contracted to rotate the shaft 121 counterclockwise. Rotate downward. Then, the traveling body 2 inclined rightward is set in a horizontal state.

Below the front part of the body frame 3, on both the left and right sides,
Brackets 134 and 135 extend downward, and each of the brackets 134 and 135 is
6.137 is pivoted. Front wheel arms 138, 139 are fixed to the pivots 136, 137, and the front wheel arms 138, 139 extend forward and downward. The front wheel arms 138 and 139 are
The front wheels 4, 4 are pivotally provided at the front ends of 8, 139, respectively.

At the rear part of the left side of the traveling body 2, the crank arm 130 has a connecting link 142 fixed thereto, and at the front part, the pivot 136 has the connecting link 144 fixed thereto. The connecting links 142 and 144 are rotatably connected by connecting shafts 146 having brackets fixed to both ends, so that the rotation of the shaft 121 is transmitted to the front wheel 4 through the rotation of the pivot 136. . The shaft 12
When 1 rotates, the connecting shaft 146 reciprocates back and forth. The front bell crank mechanism 140 is configured as described above, and the front bell crank mechanism 140
6 is converted into a rotational motion of the front wheel arm 138. And the connecting link 142
By appropriately setting the fixed angle of 144 and the like, the vertical reciprocating motion of the front wheel 4 becomes the same phase as the vertical reciprocating motion of the rear wheel 5, and the height of the ground contact surface between the front wheel 4 and the rear wheel 5 is increased. Are the same.

The same configuration is also applied to the right side of the traveling machine body 2. The crank arm 132 has a connection link 143 fixed at the rear, and the pivot 137 has the connection link 145 fixed at the front. The connecting links 143 and 145 are rotatably connected by connecting shafts 147 having brackets fixed to both ends, so that the rotation of the shaft 121 is transmitted to the front wheel 4 through the rotation of the pivot 137. . When the shaft 121 rotates, the connecting shaft 147 reciprocates back and forth. The front bell crank mechanism 141 is configured as described above, and the front bell crank mechanism 141 is
The reciprocating movement of the connecting shaft 147 is performed by the front wheel arm 139.
It converts it into a rotational motion. By appropriately setting the fixed angles of the connecting links 143 and 145, the vertical reciprocating motion of the front wheel 4 is in phase with the vertical reciprocating motion of the rear wheel 5, so that the front wheel 4 and the rear wheel 5 So that the height of the ground contact surface is the same.

The vehicle body level control mechanism is constructed as described above, and the front and rear wheels 4 and 5 have the same contact surface height at the front and rear. ,
It is possible to move up and down so that the contact surface height is different. When the traveling body 2 is tilted left and right due to unevenness of the ground, the left and right front wheels 4 and rear wheels 5 are moved up and down in opposite phases by the vehicle body horizontal control mechanism.
To keep it level.

Next, the traveling clutch structure of the vegetable seedling planting machine 1 will be described. Switching of the traveling body 2 between forward, neutral, and reverse is performed by sliding the shifter rotating body 169 in the transmission case 7 in the axial direction with respect to the main shaft 157, as described above. The shifter rotator 169 is
The transmission case 7 is configured to slide by a fork body (not shown) pivotally provided inside the transmission case 7. Also,
As shown in FIG. 21, an auxiliary speed change operation lever 201 is pivotally provided on the upper surface of the transmission case 7 so that the fork body swings in conjunction with the swing of the auxiliary speed change operation lever 201. It is configured. Therefore, the forward movement of the traveling body 2 due to the swing of the sub-transmission operation lever 201,
The transmission case 7 is configured to be able to switch between neutral and reverse.

At the time of work, the operator is on the driver's seat 15 and operates the seedling feeding table 32 to supply sweet potato seedlings to the planting section 31 as described above. This driver's seat 15 is a riding position of the vegetable seedling planting machine 1. On the other hand, when the operation of planting one row of ridges is completed and the process moves to the next ridge, the worker temporarily stops the vegetable seedling planting machine 1 and turns the vegetable seedling planting machine 1.
It descends further and moves to the walking position at the rear end of the vegetable seedling planting machine 1. Then, the vegetable seedling planting machine 1 is operated from the walking position to switch between forward and backward movements, and a steering operation described later is performed to move to the next operation.

The traveling operation handle 20 has the structure shown in FIG.
As shown in FIGS. 2 and 20, a walking travel clutch lever 202 is provided. The walking traveling clutch lever 202 is means for switching the sub transmission mechanism.
The walking travel clutch lever 202 and the auxiliary speed change operation lever 201 are connected by a travel wire 204 via an urging spring 203.

As shown in FIG. 21, the traveling wire 204
Is composed of an outer 204b and an inner wire 204a which is housed in the outer 204b so as to be able to move forward and backward.
And connected to. An outer receiver 205 is provided on the upper surface of the transmission case 7 so as to be swingable.
The outer 204b is fixed to the outer receiver 205. By operating the walking travel clutch lever 202, the inner wire 204a is moved forward and backward with respect to the outer receiver 205, and the
01 is rocked. The sub-shift operation lever 201 is urged counterclockwise by urging means (not shown) so that the urging means and the urging spring 203 are balanced. Then, the inner wire 20 is biased by both the urging means and the urging spring 203.
The sub-transmission operation lever 201 is allowed to gently swing in accordance with the forward / backward movement of the transmission 4a, so that the above-mentioned speed change in the transmission case 7 is reliably performed. .

When the worker is in the walking position and the traveling
When the operation is performed, the riding traveling clutch lever 206 described later is in the neutral position. When the riding traveling clutch lever 206 is located at the neutral position, the outer receiver 205 is fixed to the transmission case 7 so as not to swing. When the worker operates in the walking position, the walking traveling clutch lever 202 is used.
Is prevented from swinging due to the operation of (1).

As described above, the traveling clutch structure of the traveling body 2 is constituted, and the worker at the walking position operates the walking traveling clutch lever 202 to switch the traveling body 2 between forward, neutral and reverse. So that you can do it. Note that, in FIG.
Is a neutral position N at which the sub-shift is in a neutral state. Then, the position where the sub-transmission operation lever 201 swings counterclockwise from the neutral position N and the sub-transmission operation lever 201 is indicated by a two-dot chain line is a forward position F where the sub-transmission is in a forward state. Also, it swings clockwise from the neutral position N,
The position where the sub-transmission operation lever 201 is indicated by a two-dot chain line is a reverse position R at which the sub-transmission is in a reverse state.

FIG. 1, FIG.
As shown in FIGS. 2 and 20, the riding clutch lever 2
06 is provided. The riding traveling clutch lever 20
6 is also similar to the walking travel clutch lever 202,
This is means for switching the sub-transmission mechanism. The walking traveling clutch lever 202 is capable of switching between forward, neutral, and reverse three stages, while the riding traveling clutch lever 206 is capable of switching between forward and neutral two stages.

The riding traveling clutch lever 206 and the outer receiver 205 are connected by a riding wire 208 via an urging spring 207. Passenger wire 208
Similarly to the traveling wire, the outer wire 208b and the inner wire 2 which is stored in the outer
08a, and the inner wire 208
a of the riding clutch lever 20
6 and the urging spring 207. An outer receiver 209 is fixed to the side plate 17, and the outer 208b is fixed to the outer receiver 209.

When the worker is in the riding position and the traveling
Is performed, the walking traveling clutch lever 202 is in the neutral position. Therefore, when the operator operates the riding clutch lever 206, the inner wire 208a moves forward and backward with respect to the outer receiver 209, and swings the outer receiver 205. And the outer receiver 2
When the 05 swings, the inner wire 204a inserted in the outer 204b is loosened or stretched to swing the sub-shift operation lever 201. In addition, as shown in FIG.
There are only two possible positions of the outer support 205, a position indicated by the solid line of the outer receiver 205 and a position indicated by the two-dot chain line when the outer receiver 205 swings clockwise. The position where the outer receiver 205 is indicated by a solid line is a neutral position N0 where the auxiliary shift is in the neutral state, and the position where the outer receiver 205 is indicated by the two-dot chain line is the forward state with the auxiliary shift. It is the forward position F0.
By configuring the traveling clutch structure of the traveling body 2 as described above, the operator at the riding position operates the riding traveling clutch lever 206 so that the traveling body 2 can be switched between forward and neutral. I have to.

Next, the steering method of the vegetable seedling planting machine 1 will be described for the case of working and the case of running, respectively. First, a case during work will be described. As shown in FIGS. 1 and 2, the traveling body 2 is provided with a ridge following device 148 at the front end of the vehicle body frame 3. FIG.
As shown in the figure, a support 149 is fixed to the vehicle body frame 3 and the support frames 150 and 15 are fixed to the support 149.
0 extends left and right, and the support frame 150.
Reference numeral 50 allows the left and right positions to be freely adjusted by fastening bolts. Roller support arms 151 are pivotally supported at the outer ends of the support frames 150, 150, respectively, and the roller support arms 151 extend downward. Below the roller support arms 151, ridge rollers 152, 152 are pivotally provided, respectively. Plates 153 and 153 are fixed to the roller support arms 151 and 151, respectively, and an urging spring 154 is connected between the plates 153 and 153. 152 are biased inward.

Further, the center of the biasing spring 154 may be fixed to the support 149. At this time, the center of the urging spring 154 cannot move left and right, so that the inclination of the ridge rollers 152 with respect to the traveling machine body 2 is equal in the left and right directions. Therefore, vegetable seedling planting machine 1
When this configuration is used, the traveling body 2
Can be prevented from being largely shifted between the left and right centers.

As described above, the ridge following device 148 has a configuration in which the pair of ridge rollers 148, 148 urged inward. At the time of the work, the worker puts the vegetable seedling planting machine 1 into the ridge so that the side surface of the ridge and the ridge rollers 148 and 148 are aligned. At this time, the ridge roller 1
Since 48.148 is urged inward, it comes into contact with the side surface of the ridge, and the vegetable seedling planting machine 1 is guided by the ridge. Therefore, at the time of work, that is, when the worker puts the vegetable seedling planting machine 1 in the ridge, the vegetable seedling planting machine 1 is running following the ridge, so that the steering operation is unnecessary. I have.

The ridge following configuration of the ridge following device 148 is not limited to the configuration by the urging force of the urging spring 154, and the ridge rollers 148 and 148 may be fixed to the traveling body 2. As shown in FIG.
A guide 230 is fixed to the roller support arm 151. A bolt 231 is screwed onto the support frame 150 via a washer 232 outside the traveling body 2 at the rear end of the roller support arm 151. The guide 230 is provided with an insertion hole 230a which is an arcuate long hole. The bolt 231 can be inserted freely into the insertion hole 230a, and the roller support arm 151 is connected to the insertion hole 230a.
a can be swung within the long hole range. From the above configuration,
The roller support arm 151 is fixed to the support frame 150 by fastening the bolt 231 to the support frame 150.
50 can be fixed. In this manner, by fixing the inclination of the roller support arms 151, 151, the inclination of the ridge rollers 148, 148 can be fixed, and the followability of the traveling body 2 to the ridge can be improved.

Next, the steering method of the vegetable seedling planting machine 1 will be described in the case of traveling. As described above, the traveling operation handle 20 is extended rearward from the traveling machine body 2, and the operator grips the traveling operation handle 20 during traveling to travel the vegetable seedling planting machine 1. Perform the operation. On both left and right sides of the rear part of the traveling operation handle 20,
Side clutch levers 155L and 155R are provided. The side clutch levers 155L and 155R are
Each is connected to a side clutch (not shown), so that power transmission to the left and right rear wheels 5, 5 can be freely connected and disconnected. In the present embodiment, these side clutches are housed in the chain cases 10 and 11. For this reason, the operator can release the side clutch connected to the side clutch lever by turning the side clutch lever on the side on which the vegetable seedling planting machine 1 is to be turned, and turn the vegetable seedling planting machine 1. it can. In addition, at this time, the operator presses down the traveling operation handle 20 so that the front wheels 4 are lifted off the ground, and the turning can be performed smoothly.

[0109]

According to the present invention, a frame is provided so as to be vertically movable with respect to the traveling body, a ground PTO case is provided on the traveling body, and a gear case is fixed to the frame to receive power from the engine. A vegetable planting machine is provided so that one plant is provided on the output shaft of the gear case, and the plant is rotated as the vehicle travels to plant the vegetable seedlings held in the plant. With this configuration, two engine outputs are provided in addition to the traveling drive, and the two working machines can be driven simultaneously in synchronization with the traveling drive.

As described in claim 2, a frame is provided to be vertically movable with respect to the traveling body, a ground PTO case is provided in the traveling body, and a gear case is fixed to the frame to transmit power from the engine. One plant is provided on the output shaft of the gear case, and the plant is rotated as it travels,
A vegetable seedling planting machine is configured to plant the vegetable seedlings held in the plant, and a transmission mechanism for transmitting the output from the engine to the generator is provided in the traveling body. Power supply can be secured. Therefore, the electric actuator can be driven without mounting an external power supply on the vegetable seedling planting machine. Further, since the generator is driven to charge the battery whenever the engine is started, the electric actuator can be driven stably.

As described in claim 3, a frame is provided so as to be vertically movable with respect to the traveling body, a ground PTO case is provided in the traveling body, and a gear case is fixed to the frame to transmit power from the engine. One plant is provided on the output shaft of the gear case, and the plant is rotated as it travels,
A vegetable seedling planting machine is configured to plant the vegetable seedlings held by the transplanted plant, and a plurality of gears that always mesh with the input shaft side gear are shifted to the ground PTO case via a ball clutch. A shifter shaft provided on the shaft and slidable in the axial direction, and a projection provided on the shifter shaft and the ball clutch are configured to be engaged with each other. Can be changed, and the planting interval of the vegetable seedlings can be changed as necessary.

According to a fourth aspect of the present invention, a frame is provided to be vertically movable with respect to the traveling body, a ground PTO case is provided in the traveling body, and a gear case is fixed to the frame to transmit power from the engine. One plant is provided on the output shaft of the gear case, and the plant is rotated as it travels,
A vegetable seedling planting machine is configured to plant the vegetable seedlings held in the moving plant, a one-way clutch is provided on an input side of the ground PTO case, and an output of the ground PTO case is provided when the traveling body moves backward. Since the power transmission to the side is configured to be cut off, the moving body stops when the traveling machine body moves backward. For this reason, when the transplanted plant is driven in reverse with the backward movement, the transplanted plant itself is damaged, the vegetable seedlings held in the transplanted plant are damaged, or the seedlings already planted on the ridges are damaged. There is no.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a vegetable seedling planting machine.

FIG. 2 is an overall plan view showing a vegetable seedling planting machine.

FIG. 3 is a developed sectional view showing a power transmission configuration of a transmission case and a ground PTO case.

FIG. 4 is a side view showing a mission case.

FIG. 5 is a plan sectional view showing a working unit drive case.

FIG. 6 is a diagram showing the rotation speeds of a plant drive shaft, a table drive shaft, and a groove drive shaft with respect to the rotation speed of a transmission shaft.

FIG. 7 is a diagram illustrating an outer peripheral shape of a gear in a working unit drive case that performs intermittent drive.

FIG. 8 is a side view showing a seedling feeding table.

FIG. 9 is a partial cross-sectional view as viewed from an arrow A, showing a seedling feeding table.

FIG. 10 is a view as seen from an arrow B showing a seedling feeding table.

FIG. 11 is a side sectional view showing a seedling holder.

FIG. 12 is a side view showing the planting portion.

FIG. 13 is a front view showing the planting section.

FIG. 14 is a front view showing a planting claw.

FIG. 15 is a side view showing a planting claw cam and a claw support cam.

16A and 16B are a side view and a cross-sectional view taken along the line CC of the grooved blade.

FIG. 17 is a side view showing a planting posture of a sweet potato seedling.

FIG. 18 is a side view showing ridge height detecting means.

FIG. 19 is a side view showing a driving means for moving the planting frame up and down.

FIG. 20 is a plan sectional view showing a traveling clutch structure.

FIG. 21 is a plan sectional view showing a main part of the traveling clutch structure.

FIG. 22 is a side view showing a vehicle body level control mechanism.

FIG. 23 is a plan view showing a vehicle body level control mechanism.

FIG. 24 is a side view showing a vehicle body horizontal control mechanism in the rear part of the body.

FIG. 25 is a front view showing the ridge following device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vegetable seedling planting machine 2 Running body 6 Engine 8 Ground PTO case 36 Ground PTO shaft 48 Plant 189 Shifter shaft 190 Shift shaft 191, 192, 193 Ball clutch 198 ball detent

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiji Kimura 428 Enami, Okayama City F-term (reference) 2B060 AA01 AA08 AA09 AC01 AE03 BA04 BB02 BB05 CA01 CA04 CA13 CB07 CC09 2B062 AA01 AB01 BA05 BA13 BA18 3D043 AA05 AB11 BA01 BA04 BA06 BC02 BC03 BC05 BC08 BC10 BC11 BC15 BC19 BD02 BD03 BE01 BE02

Claims (4)

[Claims] A frame is provided on a traveling body so as to be vertically movable, a ground PTO case is provided on the traveling body, and a gear case is fixed to the frame to transmit power from an engine. Is provided on the output shaft of the gear case, and the plant is rotated as it travels, so that the vegetable seedlings held by the plant are planted. . 2. A vehicle body is provided with a vertically movable frame, a ground PTO case is provided on the vehicle body, and a gear case is fixed to the frame to transmit power from the engine. Is provided on the output shaft of the gear case, the plant is rotated as it travels, and the vegetable seedlings held by the plant are planted, and the output is transmitted from the engine to the generator. A vegetable seedling planting machine, wherein a transmission mechanism is provided in the traveling machine body. 3. A vehicle body is provided so as to be vertically movable with respect to the traveling body, a ground PTO case is provided on the traveling body, and a gear case is fixed to the frame to transmit power from an engine. Is provided on the output shaft of the gear case, and the plant is rotated as it travels so that the vegetable seedling held by the plant is planted.
A plurality of gears, which always mesh with the gears on the input shaft side, are provided on the transmission shaft via a ball clutch, and a shifter shaft that is slidable in the axial direction, a projection provided on the shifter shaft, and a case. A vegetable seedling planting machine characterized in that it is configured to engage with a ball clutch. 4. A vehicle body is provided with a vertically movable frame, a ground PTO case is provided on the vehicle body, and a gear case is fixed to the frame to transmit power from the engine. Is provided on the output shaft of the gear case, and the plant is rotated as it travels so that the vegetable seedling held by the plant is planted.
A vegetable seedling planting machine characterized in that a one-way clutch is provided on the input side of the case so that the power transmission to the output side of the ground PTO case is cut off when the traveling body moves backward.