JPH0884513A - Seedling transplantation machine - Google Patents

Abstract

PURPOSE: To provide a seedling transplantation machine capable of rightly planting a seedling on the top of a ridge formed on a field. CONSTITUTION: The right and left front wheels 5, 5 and the right and left rear wheels 58, 58 running between ridges are attached to the right and left sides of a machine body in a state vertically movable by an actuator 65. A transplantation apparatus 2 is placed in the middle of the width of the machine body to plant a seedling on the top of a ridge. In a seedling transplantation machine having the above construction, a sensor is placed at the front side relative to the moving direction of the machine body based on the transplantation apparatus 2 and the position of a ridge is detected by contacting the sensor with the top of the ridge positioned between the right and left wheels of the right and left front wheels 5, 5 and the right and left rear wheels 58, 58. The vertical positions of the right and left front wheels 5, 5 and the right and left rear wheels 58, 58 are controlled by an actuator 65 to keep a definite planting depth of a seedling planted on the top of the ridge with the transplantation apparatus 65. The transplantation machine is also provided with a soil-covering apparatus 122 placed at the back of the transplantation apparatus 2 to gather soil to the root part of a seedling planted on the top of the ridge by the transplantation apparatus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanting machine for planting seedlings on the upper surface of a ridge formed in a field.

[0002]

2. Description of the Related Art As a conventional technique of this type, as shown in Japanese Patent Application Laid-Open No. 62-239909, there is one in which a transplantation device is provided on a machine body provided with left and right driving wheels. However, in the conventional one, the seedling is planted with the body supported only by the two left and right drive wheels, and the left and right drive wheels are not vertically controlled. Was not constant, and good seedling transplant work could not be performed.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention uses an actuator 65 to equip the left and right front wheels 5 and 5 and the left and right rear wheels 58 and 58, which run on the left and right sides of the machine body in a ridge. In a seedling transplanter that is vertically movable and has a transplanting device 2 at the center of the left and right of the machine to plant seedlings on the upper surface of the ridge, it is located between the left and right wheels of the left and right front wheels 5, 5 and the left and right rear wheels 58, 58. A sensor 109 that comes into contact with the upper surface of the ridge and detects the position of the ridge is provided in front of the transplanting device 2 in the traveling direction of the machine body, and the detection of the upper surface of the ridge by the sensor 109 detects the seedling to be planted on the upper surface of the ridge. The actuator 65 is operated to keep the planting depth constant and the left and right front wheels 5
5 and the left and right rear wheels 58, 58 are controlled to move up and down, and a soil covering device 122 is provided behind the transplanting device 2 in the direction in which the transplanting device 2 moves the soil to the root of the seedling planted on the upper surface of the ridge by the transplanting device 2. It is a characteristic seedling transplanter.

[0004]

According to the present invention, a sensor 109 for contacting the upper surface of a ridge located between the left and right front wheels 5, 5 and the left and right rear wheels 58, 58 to detect the position is provided from the transplanting device 2. Is also provided in front of the aircraft in the traveling direction, and the sensor 109
The left and right front wheels 5, 5 and the left and right rear wheels 58, 58 are operated by operating the actuator 65 so as to make the planting depth of the seedlings planted on the ridge upper surface by the transplanting device 2 constant by detecting the ridge upper surface.
Since the vertical movement is controlled, in addition to the configuration in which the front and rear wheels 5, 5 and the rear left and right wheels 58, 58 are used for traveling, the sensor 109 is provided at the position immediately before planting seedlings by the transplanting device 2. Since the upper surface of the ridge is detected, vertical movement control of the left and right front wheels 5, 5 and the left and right rear wheels 58, 58 can be properly performed,
The planting depth of the seedlings to be planted on the upper surface of the ridge by the transplanting device 2 becomes appropriate, and good transplanting work of the seedlings can be performed, and the above-mentioned problems of the prior art can be solved. Further, in addition to the appropriate planting depth of the seedlings, a soil covering device 122 is provided behind the transplanting device 2 in the direction in which the transplanting device 2 advances the soil to the root of the seedlings planted on the upper surface of the ridge by the transplanting device 2. Therefore, the soil-covering action of the soil-covering device 122 is also performed at an appropriate position for the planted seedlings, and the seedlings planted on the upper surface of the ridge grow well.

[0005]

[Example] A vegetable seedling transplanting machine according to an embodiment of the present invention,
Detailed description will be made with reference to the drawings. Reference numeral 3 denotes a mission case, which is provided on both left and right sides of which wheel transmission cases 4 and 4 facing downward are rotatably provided, and left and right drive wheels 5.5 are mounted on the tips of the wheel transmission cases 4 and 4. are doing. The left and right drive wheels 5.5
Is a connecting rod 4 "capable of adjusting the length of the upper ends of the swing arms 4 ', 4'integrally provided on each of the wheel transmission cases 4, 4."
When the field is inclined to the left and right by connecting to the balance device 6 via 4 "(when the ridges with the mulch film B are spread, the earth pile C is placed on the mulch film B between the ridges so that the mulch film B does not come off. It is configured so that the front and rear parts of the body can be adjusted to be substantially horizontal by interlocking with each other and moving up and down in reverse.

An engine 7 is directly connected to the front end of the mission case 3. Reference numeral 8 denotes a clutch case having a centrifugal clutch therein, which is provided so as to transmit the power of the engine 7 to the mission case 3 when the rotation of the engine 7 reaches a certain level or more (more than the proper number of seedling transplanting work). . 9 is a planting part transmission case, and a transmission case 10
It is fixedly connected to the left rear part of the mission case 3 via.

Reference numeral 11 denotes a sub-plantation transmission case, which is fixedly connected to the rear portion of the planting section transmission case 9 with an inclination toward the upper rear of the machine body. Reference numeral 12 denotes a handle support frame, the base portion of which is fixed to the upper end portion of the sub-plantation transmission case 11. Reference numeral 13 denotes a steering handle, which is fixed to the upper end of the handle support frame 12.

Reference numeral 14 is a front frame pipe, the front end of which is fixedly connected to the right rear part of the transmission case 3 and the rear end of which is fixed to a middle part of the horizontal frame pipe 15 whose left end is fixed to the transmission case 10. It is connected. However, the mission case 3, the transmission case 10, and the front frame pipe 1
4 and the horizontal frame pipe 15 constitute a closed quadrangular body frame.

Reference numeral 16 is a rear frame pipe, the front end of which is fixed to a U-shaped mounting plate 17 made of sheet metal fixed to the horizontal frame pipe 15 and the rear end of which is fixed to the handle support frame 12. Has been done. However, the lateral frame pipe 15, the mounting plate 17, the rear portion of the transmission case 10, the planting portion transmission case 10, the handle support frame 12, and the rear frame pipe 16 constitute a closed quadrangular body frame.

Reference numeral 18 is a seedling mount, which is a standing frame 19 and 19 on the left and right.
Seedling transfer belt 2 wound around the bottom plate space of the frame made up of
It has a structure provided with 2. Reference numeral 23 is a belt winding drive roll, and 24 is a belt winding driven roll. The belt winding drive roll 23 is fixed to a drive shaft 53 extending from the planting section transmission case 9 described later so that the seedling placing table 18 can be rotated by a certain amount when the seedling placing table 18 reaches the left and right ends. Drive cam 1
It is driven via an appropriate intermittent drive mechanism having a driven cam 137 driven by 36 and 136. However, the seedling transfer belt 22 rotates a fixed amount (only the seedling width of one plant) when the seedling mounting table 18 moves to the left and right ends, and the seedling D mounted on the seedling mounting table 18 is transferred to the seedlings described below. It is configured to be transferred to the receiving frame 25.

Reference numeral 25 denotes a seedling receiving frame, which is located on the rear end side of the seedling mounting table 18 and is attached to the sub-planting transmission case 11, and a seedling take-out port 26 is provided at the center portion on the left and right. Denoted at 27 is a seedling receiving rod made of a rod, and is a mounting plate 28 that is laterally bridged between the left and right standing frames 19 and 19 of the seedling mounting table 18 above the seedling receiving frame 25.
The lower ends of the seedling receiving rods 27 ... Are fixed at the same interval and open like comb teeth, and each of the seedling receiving rods 27 is provided so as to support the rear side of the pot container for each plant of the vegetable seedling D. Incidentally, the seedling planting fixed claw 34 and the seedling planting movable claw 35, which will be described later, plunge into the seedling mounting table 18 with the seedling receiving rod 27 sandwiched therebetween and divide one seedling D (one pot pot container). Operates to hold.

Reference numeral 29 denotes a front supporting roller of the seedling mounting table 18, and the seedling mounting table 18 is a rail 30 fixed to the lower surface of the front part thereof.
While being mounted on the front support roller 29, a spiral shaft which is rotated by being transmitted by a seedling table moving case 9 ′ whose lower part is fixedly installed on one side of the planting section transmission case 9 is provided. A general left-right drive mechanism 138 configured by a sliding cam that engages with the spiral groove of the spiral shaft and moves left and right, and is connected to the bottom surface of the seedling mounting table 18.
It is driven by and moves laterally back and forth. In addition, seedling mount 18
The rear side is supported by a slide rail 32 fixed to the rear lower surface of the seedling mounting table 18 by a guide rail 31 formed in a square shape in a side view and integrally formed with the seedling receiving frame 25.

Reference numeral 2 is a transplanting device, which comprises a box-shaped transplanter main body 33 having a hollow interior, a seedling planting fixed claw 34 and a seedling planting movable claw 35.
2 seedling planting nails and a seedling separating tool 36 made of iron plate are installed, and an operating mechanism of the seedling planting movable claw 35 is provided inside the seedling planting tool main body 33 to hold the seedling D or vice versa. The operation to open the existing seedling D is performed. Then, the seedling separating tool 36 is configured to move downward at the same speed as the rising speed of the seedling planting nails 34, 35 from the moment when the seedling planting nails 34, 35 release the held seedling D. , Seedling D is seedling nail 34.
From the position to be planted in the field at 35, seedlings 34, 35
I try not to move even if I move up.

Then, the main body 33 of the transplantation device 2 is set to the first
The rotation case 37 is pivotally attached, and the first rotation case 37 is attached to the second case.
Attached to the rotating case 38, the seedlings 34 of the transplanting device 2
The first rotary case 37 and the second rotary case 38 have a transmission mechanism built-in so that the locus P drawn by the tip of 35 is narrow in the front-rear direction and long in the up-down direction. The base of the rotating case 38 is pivotally attached to the sub-planted transmission case 11.

Reference numeral 1 denotes an implant hole forming device, which is fixed to a support plate 39 fixed to the transmission case 10 and the U-shaped mounting plate 17 by welding and fixed to a support shaft 40 which is horizontally extended in the lateral direction of the machine body. The upper swing link 44 and the lower swing which are rotatably pivotally attached by pivot shafts 42 and 43, respectively, in a state in which the base portion is housed inside the front view portal type mounting portion 41 Link 45, the upper swing link 44 and the lower swing link 45
A U-shaped plate 48 made of an iron plate, which is pivotally supported by the pivot shafts 46 and 47 at its tip end while being fitted inside.
And a transplant hole forming plate 51 fixed to the U-shaped plate 48 with bolts 49 and nuts 50 and a U-shaped transplant hole forming needle 51 '.
A transplant hole forming tool 52, a drive cam 54 fixed to a drive shaft 53 having a tip end rotatably supported by a bearing body 53 ′ extending from the planting part transmission case 9 and fixed to the mounting plate 17. A driven cam 56, which is a bearing pivotally supported by a pivot shaft 55 on the upper swing link 44 to engage with the drive cam 54, and a lower swing link 45 are urged in the direction a. It is composed of a winding spring 57 that acts to pull the transplant hole forming device 1 upward. However, when the drive shaft 53 is driven and rotated, the drive cam 54 also rotates and engages with the driven cam 56, and when the upper swing link 44 is pushed down by the biasing force of the winding spring 57, the implant hole forming needle is formed. The tip of 51 'is configured to move downward along an operation locus in the direction of the locus P drawn by the tips of the seedling planting claws 34, 35 of the transplantation device 2. In this way, the upper swing link 4
4, lower swing link 45, drive cam 54 and driven cam 5
A vertical movement mechanism E for vertically moving the implantation hole forming tool 52 is constituted by 6, the winding spring 57 and the like. Incidentally, the drive cam 54 is implanted hole forming needles 51 are 'the tip of the cam surface 54 to operate to suspend to a hole in the field at the lowermost end P ₁ of the operating locus' is provided.

Reference numerals 58, 58 are left and right rear wheels provided at the rear of the body behind the left and right drive wheels 5, 5 and are cylindrical bosses rotatably supported on both left and right sides of the support shaft 40. Arms 60, 60 fixed to 59, 59 are rotatably supported at the tips of the arms 60, 60, respectively, and the grounding point is the transplant position P _{1 of the} locus P drawn by the tips of the seedlings 34, 35 of the transplant apparatus 2.
Is arranged so as to be substantially at the same position in the front-rear direction of the machine body in a side view. The bases of the rotating arms 61, 61 are fixed to the cylindrical bosses 59, 59, respectively.
The upper end of 1.61 is provided with a balance body 63 of the balance device 6 via a connecting rod 62, 62 whose length can be adjusted by a turnbuckle.
Are connected to both left and right sides.

Reference numeral 64 denotes a hydraulic case, which is composed of a hydraulic cylinder 65 and a hydraulic valve 66 as an actuator for vertically moving the left and right driving wheels 5, 5 and the left and right rear wheels 58, 58, and the transmission case 10 and the front portion. It is fixedly installed on a support 67 made of an iron plate that is fixed horizontally across the frame pipe 14. Reference numeral 68 denotes a hydraulic piston, which is mounted on the hydraulic cylinder 65 so as to be able to move forward and backward in the lower direction, and the balance device 6 is mounted on the tip portion thereof.

Here, the balance device 6 will be described in detail. 6
Reference numeral 9 denotes a sliding body, which is urged in the direction B by a compression spring 72 interposed between a washer 71 and a washer 71 mounted on a step 70 in the middle of the hydraulic piston 68.
Is attached to the tip of the so as to be slidable in the lower direction. An extending portion 74 having an elliptical hole 73 in a plan view is integrally provided on one side of the sliding body 69, and pivot pins 75 and 76 are welded and fixed to the upper and lower sides. There is. 1
Reference numeral 07 denotes a washer for a stopper which prevents the sliding body 69 from coming off from the hydraulic piston 68.
Is fixed to the tip of the hydraulic piston 68.

The balance 63 is composed of an upper plate 79 and a lower plate 80 which are integrally fixed by bolts 77 and nuts 78, and pivot pins 75 are provided in bosses 81 and 82 fixedly provided at the center thereof. The slide body 69 is rotatably mounted by inserting 76. Then, on both left and right sides of the balance body 63, a connecting rod 62 connected to the left and right rear wheels 58, 58.
The front end portion of 62 is pivotally supported by the pins 83, 83, and the rear end portion of the connecting rod 4 ", 4" connected to the left and right drive wheels 5, 5 is pivotally supported by the pins 84, 84.

Reference numeral 85 denotes a left and right wheel reverse vertical movement device for forcibly inclining the balance 63 with respect to the hydraulic piston 68 to simultaneously move the left and right drive wheels 5, 5 and the left and right rear wheels 58, 58 in the reverse right and left directions. A cylindrical cam body 86 inserted into the elliptical hole 73 of the sliding body 69, a rotating pin 87 eccentrically attached to the cam body 86 by welding, and a rotating pin 87.
The driving body 9 integrally including the arms 90 and 90 fixed by the fixing bolt 89 so as to rotate integrally with the key 88.
1 and the pins 90 on the arms 90, 90 of the driving body 91, respectively.
And connecting wires 93 that are connected by 95 and are operated to move back and forth in the niece direction by the operating lever 92. The outer 93 'of the connecting wire 93
Numeral 93 'is fixedly supported by an outer support plate 94 welded to the upper plate 79 of the balance body 63.

The structure of the mounting portion of the operating lever 92 will be described below. A fixed plate 96 fixedly connects the handle support frame 12 and the rear frame pipe 16 to each other, and is provided at a connecting portion between the handle support frame 12 and the rear frame pipe 16. Reference numeral 98 denotes a rotating body, which is rotatably supported on the fixed plate 96 by a support pin 97. The base portion of the operating lever 92 is welded and fixed to the pipe body 100 pivotally supported by the pivot pin 99 on the rotating body 98. 101 is a locking plate, which is welded and fixed to the operation lever 92,
A plurality of locking grooves 102 provided on the vertical surface 96 ′ of the fixed plate 96.
It is configured so that it can be engaged with any of. 103
Is a spring for urging the operating lever 92 toward the locking groove 102, and the operating lever 92 is fixed with the locking plate 101 engaged with the locking groove 102 by the urging force of the spring 103. Is provided. On the other hand, the rotor 98 has a groove 1 around it.
04 is provided, and the connecting wire 93 is provided in the groove 104.
Is wrapped around. The connecting wire 93 is fixed to the rotating body by the bolt 105. Reference numeral 106 denotes a receiving metal fitting for the outer 93 'and 93' of the connecting wire 93,
It is fixed to the back surface of the fixed plate 96.

However, if the locking plate 101 is removed from the locking groove 102 by operating the biasing force of the spring 103 and the operating lever 92 is operated in the needle direction, the rotating body 98 also rotates in the heat direction and is connected. The wire 93 is pushed and pulled in the hate direction. Then
Since the drive body 91 of the left and right wheel reverse vertical movement device 85 is rotated, the cam body 86 is eccentrically rotated accordingly, and the balance body 63 is forcibly inclined with respect to the hydraulic piston 68, and the left and right drive wheels 5.5 and the left and right rear wheels. 58, 58 can be moved up and down in the same amount at the same time. Then, after the left and right drive wheels 5, 5 and the left and right rear wheels 58, 58 are simultaneously moved up and down in the opposite directions, the locking plate 101 is again engaged with the locking groove 102 to adjust the position of the wheels. Fixed to.

Reference numeral 109 denotes a sensor which is a plate member which contacts the upper surface of the ridge and detects the position of the ridge while shaping the upper surface of the ridge, and a mounting portion 110 is integrally provided on the front portion of the sensor.
A rotating shaft 111 is rotatably supported by a mounting plate 17 fixed to the horizontal frame pipe 15 and a supporting plate 39 fixed to the transmission case 10. Then, the arm 112 extends forward from the rotary shaft 111, and the arm 11 extends.
2 through the pivot pin 113 at the tip of the sensor 10.
Nine mounting parts 110 are mounted. Also, the rotating shaft 11
1, a base portion of an operation lever 115 integrally provided with a locking plate 114 extending rearward is welded and fixed.
The operation lever 115 is formed in a crank shape in a plan view, and is configured to be distorted by its elasticity in the direction of the chain. The locking plate 114 of the operation lever 115 is fixed to the rear frame pipe 16. It is configured to be engaged and fixed in the locking grooves 117 ... Of the locking groove plate 116. However, the rotation shaft 111 is rotated by the rotation operation of the operation lever 115, the sensor 109 is vertically adjusted in the Noor direction, and the locus P drawn by the tips of the seedlings 34, 35 of the transplanting device 2 is drawn.
Since the positional relationship between the transplantation position P ₁ and the sensor 109 is changed, the planting depth of the seedlings to be planted in the ridge is changed.

On the other hand, the mounting piece 11 on one side of the mounting portion 110
0'is extended upward, and its upper end is connected to the spool 118 of the hydraulic valve 66 by a connecting rod 119. When the sensor 109 moves upward in the direction n, the hydraulic pressure is increased. The valve 66 is switched and pressure oil is supplied to the hydraulic cylinder 65 by the hydraulic pump 120, and the hydraulic piston 68 advances in the direction of B, and the left and right drive wheels 5 and 5 and the rear left and right wheels 58 and 58 are simultaneously sensed by the same amount.
9 is moved downward until it returns to a predetermined posture (position). On the contrary, when the sensor 109 moves downward in the leftward direction by a predetermined amount or more, the hydraulic valve 66 is switched, the pressure oil in the hydraulic cylinder 65 is discharged, the hydraulic piston 68 retracts in the direction H, and the left and right drive wheels 5.5. Also, the left and right rear wheels 58, 58 are simultaneously moved up by the same amount until the sensor 109 returns to a predetermined posture (position). Therefore, the left and right driving wheels 5 and 5 and the left and right rear wheels 58.5 are detected by detecting the upper surface of the ridge of the sensor 109.
8 is automatically adjusted up and down, and the seedling D is always planted in the ridge at a predetermined planting depth. Further, since the sensor 109 detects the position of the ridge while holding the upper surface of the ridge from above and on the left and right sides and shaping the ridge upper surface, even if the ridge is slightly collapsed, the sensor 109 Since the ridges are shaped, proper seedling planting work is performed. Further, a notch 121 is formed in the rear portion of the sensor 109, and a transplant hole forming tool 52 composed of the transplant hole forming plate 51 and the transplant hole forming needle 51 ′ of the transplant hole forming device 1 is formed in the notch 121. Are configured to project into the upper surface of the ridge.
Therefore, when the mulch film B is stretched over the ridges, the sensor 109 is used to press the front and left and right sides of the mulch film B where the graft hole A is to be opened, and the graft hole A can be opened neatly. The seedling planting claws 34, 35 of the transplanting device 2 are also configured to project into the upper surface of the ridge in the notch 121, so that the seedlings can be properly planted.

Numerals 122 and 122 are left and right soil cover devices for attracting soil to the seedling D from both the left and right sides of the seedling D planted on the upper surface of the ridge to surely plant the seedling D in the ridge.
28 and 128 are connected to the left and right sides of the pivot shaft 43 of the lower swing link 45 of the transplant hole forming device 1 through universal joints 123 and 123, respectively, and mounting plates fixed to the horizontal frame pipe 15 are provided. 17 and transmission case 1
It is rotatably supported by a support plate 39 fixed to 0.
Reference numeral 124 denotes a driven cam which is a bearing rotatably attached to the tip of an arm 125 welded and fixed to the pivot shaft 43, and fixed to the drive shaft 53 extending from the planting section transmission case 9. The driven cams 126 are forcibly engaged and swung, and the left and right soil cover plates 127 of the left and right soil covering devices 122, 122 are moved.
When the 127 is located on the side of the seedling D, the drive cam 126 and the driven cam 125 are engaged with each other, and the left and right soil gathering plates 127 and 127 are moved downward from the diagonally upper left and right sides of the seedling D toward the seedling D. The soil is brought close to the seedling D. Explaining a mounting portion of the operating shafts 128 and 128 and the earth closing plates 127 and 127, mounting frames 129 and 129 each having a rectangular shape in plan view are welded and fixed to a tip end of the operating shafts 128 and 128. The sliding shafts 131 and 132 fixed to the earth pulling plates 127 and 127 are fitted and inserted into the holes 130 provided in 129, and the washer 134 which is prevented from coming off by the stopper pin 133 is fitted to the tip of one sliding shaft 132. A compression spring 135 having a comparatively weak elastic force is mounted between the washer 134 and the mounting frame 129. However,
The soil gathering plates 127 and 127 move the soil toward the seedling D by moving downward from the diagonally upper left and right sides of the seedling D toward the seedling D (while being in contact with the ridge soil surface). Does not drag the soil of the ridge in the forward direction of the machine, because it moves in the direction of the spring 135 and moves in the direction of W and stops at the ridge surface even if the When the mulch film B is stretched, it is possible to prevent the mulch film B from being broken by the earth gathering plates 127, 127. In addition, it is effective to form the back surface (the surface contacting the soil or the mulch film) of the earth gathering plates 127, 127 with a smooth synthetic resin which is hard to adhere to the soil.

139 and 139 are left and right wheel transmission cases, respectively.
This is a general left / right side clutch lever for turning on / off the left / right side clutches of the left / right drive wheels 5, 5 provided on the gears 4, 4. Reference numeral 140 denotes a planting clutch lever that activates or deactivates the seedling placing table 18, the transplanting device 2, and the transplant hole forming device 1.

Reference numeral 141 is a hydraulic lever, and the tip of the connecting rod 119 is provided with a long hole 14 through the connecting wire 142.
3 is connected to the control switching piece 144 engaged with 3,
The left and right driving wheels 5 are detected by detecting the upper surface of the ridge of the sensor 109.
5 and the left and right rear wheels 58, 58 are automatically controlled to move up and down (when the spool 118 of the hydraulic valve 66 is in the neutral position, the tip of the connecting rod 119 is the control switching piece 1).
The position in the center of the long hole 143 of 44, where the spool 118 is freely switched by the sensor 109, and the lift position (control) for forcibly lowering the left and right drive wheels 5.5 and the left and right rear wheels 58, 58. Long hole 1 of switching piece 144
The tip end of the connecting rod 119 is pulled at the end portion 145 of 43 to force the spool 118 to switch to the wheel lower movement position). still,
A compression spring 146 is provided between the outer wall surface of the hydraulic valve 66 and the control switching piece 144.

Reference numeral 142 is a throttle lever for adjusting the rotation speed of the engine 7. Next, the operation of the above example will be described. Left and right drive wheels 5, 5 and left and right rear wheels 58 of the seedling transplanter.
・ Set the machine so that 58 will straddle the ridge of the field where the multi-film B is stretched, and grow it with a paper-made nursery machine in which pot containers are vertically and horizontally connected to the seedling table 18 at predetermined intervals. After the pot-shaped vegetable seedlings D are placed and housed, the engine 7 is started and the throttle lever 142 is raised from the idling speed to the seedling planting work speed, and the power of the engine 7 is transmitted through the centrifugal clutch in the clutch case 8. The body is propelled by the rotation of the left and right drive wheels 5, 5 by being transmitted to each part of rotation.

At this time, when the planted clutch lever 140 is operated to the clutch engagement position, the seedling table 18 is reciprocally rocked in the left and right directions by the power of the engine 7 through the left and right drive mechanism 138, so that the rear end side thereof is formed. The seedling D located at is moved left and right while being received by the seedling receiving frame 25,
A seedling D is fed to the plant and a seedling locus P is drawn to draw a seedling nail 34.3.
Sequentially grabbed by 5. On the other hand, the drive cam 54 fixed to the drive shaft 53 is engaged with the driven cam 56 provided on the upper swing link 44 of the transplant hole forming device 1 to move the upper swing link 44 to the biasing force of the winding spring 57. Then, it is moved downward, and is vertically swung while drawing a locus of operation in which the tip of the transplant hole forming needle 51 'of the transplant hole forming tool 52 plunges into the soil at the seedling transplant position. At this time, since the machine body is advancing, the transplant hole forming needle 51 ′ pierced in the multifilm B tears the multifilm B to form the transplant hole A in the multifilm B and the transplant hole forming plate 51 is soiled. To form a transplant hole A in the ridge. Then, the seedling planting nails 34, 35 sandwiching the seedling D are inserted into the transplanting hole A, the seedling planting nails 34, 35 are separated from each other to release the seedling D, and from that moment, the seedling separating tool 36 sets the seedling planting nails. 34.
35 moves downward at the same speed as moving upward so that the seedling D is not moved from that position and is placed at that position.
The seedling D is transplanted into the transplant hole A.

At this time, since the graft hole forming needle 51 'tears the mulch film B to form the graft hole A, the ruptured mulch film B does not plastically deform and returns to its original state. Since the film around the hole A is stretched and torn, the length of the hole A opened l ₁
The length l ₂ of the torn film is shorter than that.
Therefore, the torn film is not entangled with the seedling D, and the seedling D grows well without adversely affecting the seedling D.

Further, the left and right drive wheels 5, 5 and the left and right rear wheels 58, 58 are automatically adjusted to move up and down by the detection of the upper surface of the ridge by the sensor 109, and the seedling D is always planted in the ridge at a predetermined planting depth. To be Then, when the heights of the farm fields on the left and right sides of the machine body are different on the slope such as a mountain slope, the operation lever 92
If the balance 63 is forcibly tilted with respect to the hydraulic piston 68 and the left and right drive wheels 5, 5 and the left and right rear wheels 58, 58 are moved up and down in the left and right directions to adjust the machine body horizontally. , Seedlings will be planted properly even on slopes.

Although the seedling transplanting work is performed as described above, since the control handle 13 is provided at a position deviated to the left side of the machine body, the operator runs the left drive wheel 5 and rear wheel 58. It is possible to walk in the ridges in a comfortable posture, and to easily operate the seedling transplanter and perform various operations. In addition, since the operator will operate at a position closer to the left side of the machine body, a working state in which seedlings are planted on the upper surface of the ridge at the left-right center position (seedling table 1
8 and the operating state of the transplanting device 2 and the state of the seedlings placed on the seedling placing table 18 are easy to confirm, and the work can be performed accurately and efficiently. Further, since the steering handle 13 is provided at a position deviated to the left side of the machine body, there is no member such as the steering handle 13 on the right side of the machine body. When repairing a trouble of the seedling mounting table 18 or the transplanting device 2, an operator who holds the steering handle 13 and operates can easily perform the work from the right side of the machine body, and the workability is very good.

When it is desired to check the operating states of the seedling table 18, the transplanting device 2 and the transplant hole forming device 1 by stopping the progress of the machine, the left and right side clutch levers 139 and 139 are operated by the side clutch disengagement operation. Throttle lever 1
At 42, the rotation speed of the engine 7 is increased, the centrifugal clutch is connected, and the planting clutch lever 140 is engaged with the clutch to operate only the seedling mounting table 18, the transplanting device 2, and the transplant hole forming device 1. it can.

[Brief description of drawings]

[Figure 1] Overall side view of the seedling transplanter

[Fig. 2] Overall plan view of seedling transplanter

[Fig. 3] Plan view of the main part of the seedling transplanter

[Figure 4] Front view of seedling transplanter

[Figure 5] Front view of the main part of the seedling transplanter

[Figure 6] Side view of the main part of the seedling transplanter

[Fig. 7] Plan view of the main part of the seedling transplanter

FIG. 8 is a partial cross-sectional plan view of the main part of the seedling transplanter.

[Figure 9] Side view of the main part of the seedling transplanter

FIG. 10 is a plan view of the main part of the seedling transplanter.

FIG. 11 is a cross-sectional rear view of the main part of the seedling transplanter.

[Fig. 12] Operation explanatory diagram

[Fig. 13] Bottom view of essential parts of the seedling transplanter

FIG. 14 is a partial cross-sectional side view of the main part of the seedling transplanter.

[Explanation of symbols]

 2 Transplanting device 5 Left and right driving wheels 18 Seedling platform 58 Left and right rear wheels 65 Actuator (hydraulic cylinder) 109 Sensor 122 Soil cover A Transplant hole B Multifilm C Soil D Seedling P Operating path of transplanter 2

Claims (1)

[Claims] 1. Left and right front wheels 5, 5 and left and right rear wheels 58, 58, which travel in ridges on both left and right sides of the machine body, are vertically movable by an actuator 65, and a transplanting device 2 is provided in the center of the left and right sides of the machine body. In the seedling transplanting machine for planting seedlings on the upper surface of the ridge, a sensor 109 is provided to contact the upper surface of the ridge located between the left and right wheels of the front left and right wheels 5 and the rear wheels 58 and 58 to detect the position. The front left and right wheels are provided in front of the transplanting device 2 in the traveling direction of the machine body, and the actuator 65 is operated to make the planting depth of the seedlings to be planted on the ridge upper surface by the transplanting device 2 constant by detecting the ridge upper surface of the sensor 109. 5.5
Further, the left and right rear wheels 58, 58 are controlled to move up and down, and a covering device 122 is provided behind the transplanting device 2 in the direction in which the transplanting device 2 advances, so as to bring soil to the root of the seedlings planted on the upper surface of the ridge by the transplanting device 2. Seedling transplanting machine.