JP3139043B2 - Upland transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a field transplanter for planting vegetable seedlings in ridges of a field.

[0002]

2. Description of the Related Art Heretofore , a V-shaped groove plate in a plan view is always located below a ridge surface in front of a transplanting site of a transplanting device, and is always positioned below the ridge surface .
Upland transplanter equipped with a trenching device that continuously divides the soil to the left and right by moving forward to form a groove, and a soil covering device that covers the transplanted seedlings by drawing the soil from the left and right direction behind the planting point was there.

[0003]

In the conventional field transplanter, while running across a ridge, the soil is continuously divided into right and left by a groove forming device to form a groove on the ridge, and the groove is formed in the groove. The seedlings are transplanted by the transplanting device, and then the soil is transplanted on the transplanted seedlings by the soil covering device. However, the soil could not be sufficiently covered on the front side of the seedling. For this reason, the survival of the seedlings after transplantation sometimes became poor.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problem, the present invention provides a V-shaped groove -forming body in a plan view in which a groove is formed by dividing the soil left and right in front of a planting point of a transplanting device 15. 1
In a field transplanting machine provided with a trenching device 19 provided with 9a, and provided with a soil covering device 20 for collecting soil from the left and right directions behind the planting site and covering the seedlings transplanted by the transplanting device 15, The implanting device 15 is provided in the groove forming device 19.
Before the seedlings are transplanted, the grooved body 19a moves down below the ridge surface, and the grooved body 19a moves forward and separates the soil left and right.
And characterized in that Sakumizo intermittently vertically moving mechanism 50 immediately Sakumizotai 19a when seedlings Ru are implanted by the implantation device 15 into the acting groove been the groove moves upward on the ridge surface provided Te And a transplanter for upland fields.

[0005]

[Effects of the Invention] Therefore, this field transplanter can
The V-shaped groove 19a of the device 19 in a plan view is intermittently moved up and down.
Before the seedling is transplanted by the transplanting device 15 by the mechanism 50
Move down to the bottom of the ridge and move the soil
A groove is formed by dividing the groove to the right, and the transplanting device 1 is inserted into the groove.
As soon as the seedlings are transplanted according to 5, move up on the ridge surface
Is configured. Therefore, immediately after the seedlings are transplanted
When the groove body 19a moves upward on the ridge surface, the groove body 19a
The soil that was about to be separated from left to right flows into the ditch
And the soil comes in front of the seedlings transplanted into the ditch. So
After that, the soil covering device 20 moves forward from behind,
Soil is collected on the side and rear side. Therefore, for the whole circumference of the seedling
Soil can be sufficiently covered, and seedlings after transplanting have good survival.
become.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings. First, the overall configuration of the field transplanter will be described (FIGS. 1 to 3). Numeral 1 is a seedling transplanter for transplanting vegetable seedlings while running across a ridge in a field. Reference numeral 2 denotes a traveling transmission case of the seedling transplanter 1. The engine E is directly connected to the front part, and the front ends of the left and right frames 3a and 3b are fixed to the rear part. At the rear end of the left frame 3a, a planting part transmission case 4 is fixed, and at the rear part, a transplanting part transmission frame 5 is attached.
Are linked. Further, a support frame which is inclined rearward from the upper portion of the transplant portion transmission frame 5 is fixed, and a walking type handle H is continuously provided at the upper end of the frame.
At the rear end of the right frame 3b, one end is fixed to a horizontal frame 3c fixed to the rear side surface of the right frame 3a.

Reference numerals 6, 6 denote front wheels, which are attached to the end portions of front wheel transmission cases 7, 7 attached to the left and right sides of the traveling unit transmission case 1, respectively. The power from the engine E is transmitted into the traveling unit transmission case 1 and transmitted from the traveling unit transmission case 1 to the left and right wheel transmission cases 7, 7 to drive the front wheels 6, 6. The positions of the front wheels 6, 6 can be adjusted vertically. That is, the front wheel transmission case 7,
The bosses 7a, 7a integral with the driving wheel 7 are rotatably fitted to and mounted on the right and left protruding portions of the traveling unit transmission case 1, and the hydraulic cylinder Av is mounted on the rotating portion of the front wheel transmission cases 7, 7. Connected via a rod or the like, and the hydraulic cylinder Av
The front wheel transmission cases 7, 7 swing by the operation of, and the front wheels 6, 6 move up and down with respect to the body.
At this time, the rear wheel support arms 9, 9 for supporting the rear wheels 8, 8 in idle rotation are pivotally linked with the support wheels 10, 10 via a rod or the like so that the front wheels 6, 6 and the rear wheel 8, , 8, when the body is moved up and down, horizontality of the body in the front-rear direction is maintained.

Numeral 11 denotes a seedling mounting table, the front side of which is slidably supported by a support 12 fixedly mounted on the traveling unit transmission case 1, and the rear side of which is fixedly mounted on the transplantation unit transmission frame 5. The receiving rail 13 is slidably supported on the left and right. The right and left reciprocating mechanism connected to the planting part transmission case 4 is connected to the seedling mounting table 11, and the seedling mounting table 11 reciprocates left and right in accordance with the operation cycle of the transplanting device 21 described later. ing. A roller 14 is provided on the bottom of the seedling mounting table 11.
A seedling feed belt 14c is attached to the entire surface of the seedling mounting surface so as to be wound around the seedlings a and 14b, and operates so as to feed the whole seedling by one row every time the rear end row of the placed seedlings is transplanted.

Reference numeral 15 denotes a transplantation device, which is a transplantation portion transmission frame 5.
The power transmitted to the implanted portion transmission case 4 is transmitted through a chain transmission mechanism in the transplanted portion transmission frame 5. The seedling transplanting section 16 of the transplanting device 15 operates so as to draw a long elliptical locus up and down without changing its posture by rotating the rotating cases 15a and 15b. Also, the seedling transplanting section 16 is provided with plate-shaped seedling transplanting blades 17 on the left and right sides and a seedling extruded body 18 inside thereof.
The tip of the seedling transplant blade 17, 17 passes through the seedling opening of the seedling receiving rail 13 at the rear end of the seedling mounting table 11, and separates and holds one seedling.
It moves downward, reaches the ridge surface, is extruded by the seedling extruded body 18, and is transplanted.

Reference numeral 19 denotes a groove forming device, which is provided with a groove forming member 19a which is bent in a V -shape in plan view in front of the place where the seedlings are planted by the transplanting device 15. It is connected to the moving mechanism 50. Therefore, the groove forming device 19 is configured to intermittently form grooves having a predetermined width and depth before planting the seedlings. Reference numeral 20 denotes a soil covering device, which is freely rotatably mounted on shafts 20c, 20c which are inclined so that two cylindrical earthing cylinders 20a, 20a open upward in rear view. The rotating cases 15a and 15b of the transplanting device 15 and the seedling transplanting part 16 are inserted between the opened mulching cylinders 20a and 20a.
a and 20a are arranged as close as possible to the place where the seedlings are planted by the transplanting device 15. Also, the support frame 20b
Is mounted rotatably on a horizontal shaft 20d fixed to the lower side of a bracket 3c "fixed to the horizontal frame 3c, and provided so that the soil collecting cylinders 20a, 20a swing up and down with respect to the machine body. Further, at the rear central portion of the support frame 20b connected in a loop shape, it is elastically urged downward by a pressure-reducing spring 20e, so that the left and right soil puller cylinders 20a, 20a are ridged to the body. Even if the vertical position changes temporarily, the support frame 20b swings up and down and constantly rolls while contacting the ground with a predetermined contact pressure. After the seedlings have been planted, they move forward from behind, pulling soil mainly on the left and right sides and the rear side of the seedlings and crushing them.

Therefore, the seedling transplanting machine 1 forms a planting groove with the groove body 19a of the groove forming device 19 while running over the ridge, and transfers the seedling into the planting groove with the transplanting device 15. A series of operations of planting the plants one by one and finally crushing the soil with the soil collecting cylinders 20a and 20a of the soil covering device 20 are performed. The body of the seedling transplanter 1 is provided with a body posture control device that maintains the height of the top and bottom and the right and left with respect to the ridge surface at a predetermined height (FIGS. 1 to 6). The configuration will be described below according to the reference numerals in the figure.

Av is a hydraulic cylinder serving as an actuator for raising and lowering the body. The cylinder portion 21 of the hydraulic cylinder Av is fixed to a support plate 22 fixed between the frames 3a and 3b. A spring case 24a equipped with a spring 24 is fitted to the piston rod 23 of the hydraulic cylinder Av up to a step on the rod base side, and a piston arm 25 extending in the left-right direction is further provided at the center of the rod end. It is slidably engaged with the engaging hole of the section in the front-rear direction (the direction in which the piston moves). Therefore, the movement of the piston rod 23 is transmitted to the piston arm 25 via the spring 24 as a buffer. The piston arm 25 is provided with an arm sliding shaft 2 fixed between the support plate 22 and the horizontal frame 3c in an engagement hole at the lower center thereof.
6 slidably penetrates, and the rotation of the piston arm 25 around the piston rod 23 is restricted. Also,
The left and right ends of the piston arm 25 are connected to the left and right sides of the front wheel swing arms 7b, 7b integral with the bosses 7a, 7a of the front wheel transmission cases 7, 7 of the front wheels 6, 6, respectively. As for the connection, the right side is directly connected by the rod 27, and the left side is
They are connected via a ring hydraulic cylinder Ar. The connection on the left side is, that is, the cylinder part 2 of the hydraulic cylinder Ar.
8 is connected to the left front wheel swing arm 7b, and the piston rod 29 is connected to the left end of the piston arm 25. Further, a rear wheel swing arm 31 is rotatably supported by a vertical shaft 30 above the center of the piston arm 25, and the left and right ends of the arm 29 are connected to rear wheel support arms via connecting rods 32,32. Rear wheel swing arm 9
a, 9a.

As described above, the hydraulic cylinder A for lifting and lowering the airframe
When v operates and its piston rod 23 protrudes rearward, the front wheels 6, 6 and the rear wheels 8, 8 both swing downward and the body rises. Conversely, when the piston rod 23 retreats forward, the front wheels 6, 6 and the rear wheels 8, 8 both swing upward and the body descends.

Further, when the body is tilted to the right, the hydraulic cylinder Ar for rolling is actuated and its piston rod 2
When the cylinder 9 attempts to protrude rearward, the cylinder portion 28 moves forward to rotate the left front wheel swing arm 7b. Then, the left front wheel 6 swings upward,
The rightward tilt is corrected. Conversely, when the hydraulic cylinder Ar for rolling operates and the piston rod 29 attempts to retreat forward when the body tilts to the left, the cylinder portion 28 moves rearward and the left front wheel swing arm 7b Is rotated. Then, the left front wheel 6 swings downward, and the inclination to the left is corrected. In addition, the rear wheel 8,
In the rear wheel 8, the rear wheel oscillating arm 31 is freely rotatable around the vertical axis 30, so that the right and left rear wheels 8, 8 can be freely rolled by the reaction force received from the ground.

Reference numeral 33 denotes a horizontal sensor. The pendulum 35 having a weight 35a, which is integrally attached to the hydraulic cylinder Av for lifting and lowering the fuselage, and is supported on a shaft 34 in the front-rear direction so as to be able to swing left and right, is moved by the swing of the pendulum 35. Hydraulic valve 3 for activating Ar
6 are connected so as to operate the spool 36a. Therefore, the horizontal sensor 33 detects that the pendulum 35 swings to the right with respect to the machine body when the machine body is tilted to the right.
6a is operated to switch the flow of the pressure oil so as to protrude and move the piston rod 29 of the rolling hydraulic cylinder Ar. On the other hand, if the body is tilted to the left, the pendulum 35 swings to the left with respect to the body to push the spool 36a, and the piston rod 2 of the rolling hydraulic cylinder Ar is moved.
9 is operated so as to switch the flow of the pressure oil so as to retreat the 9. When the airframe is in a horizontal state, the pendulum 35 is suspended vertically to the airframe, and the spool 36a blocks the flow of pressure oil to the hydraulic cylinder Ar.

Reference numeral 37 denotes a ridge height sensor, and the sensor support shaft 3
The ridge surface grounding body 38 pivotally supported by the pivot 9 rotates up and down in accordance with a change in the height of the ridge with respect to the body while sliding on the upper surface of the ridge, and detects the ridge height. The ridged surface grounding member 38 has a support member 38a fixed on the front upper surface thereof.
The sensor support shaft 39 is connected to the left and right frames 3a and 3b by a bracket 3
It is supported by support arms 42, 42 fixed to an adjustment shaft 41 that can be rotated by a planting depth lever 40 supported by a 'and 3b'. Therefore, by operating the planting depth lever 40, the reference position of the ridged surface grounding body 38 with respect to the machine body can be changed. In addition, the ridge surface grounding body 38 is formed of a plate-like member curved in the front-rear direction, and slides on the ridge surface while performing a ridge surface leveling action.

The support member 38 of the ridge height sensor 37
The valve operating arm 38b is integrated with the valve arm a, and is connected via a rod 44 to an operating plate 43b for operating a spool 43a of the hydraulic valve 43 for vertically moving the body and the tip of the arm 38b. . Further, a spring 45 is connected to the valve operation arm 38b so as to pull the ground contact portion of the ridge surface grounding body 38 downward in a rotating direction. Therefore, when the ridge-surface grounding body 38 rotates following the ridge height, the machine-body vertical hydraulic valve 43 is operated in conjunction therewith, and the machine-body vertical hydraulic cylinder Av operates.

That is, when the ridge surface is raised with respect to the body, the ridge surface grounding member 38 is pushed up by the grounding portion, and rotates upward around the sensor support shaft 39, and the valve operation arm 38b,
The spool 43a is operated by the connection of the rod 44 and the valve operating plate 43, and the flow of the pressure oil is switched so that the piston rod 23 of the machine vertical hydraulic cylinder Av protrudes. As a result, the left and right front wheels 6, 6 and the rear wheels 8, 8 are simultaneously lowered, and the body moves upward. As the body rises, the ridge surface grounding body 38 rotates downward by the spring 45, and the spool 43a is
When the vehicle reaches the neutral position that blocks the flow of the pressure oil to v, the ascent of the aircraft stops. Conversely, when the ridge surface is lowered with respect to the fuselage, the ridge surface grounding body 38 is rotated downward by the spring 45 around the sensor-support shaft 39 by the spring 45, and the spool 43a is moved to the position of the body vertical hydraulic cylinder Av. The flow of the pressure oil is switched such that the piston rod 23 retreats.
As a result, the left and right front wheels 6, 6 and the rear wheels 8, 8 are simultaneously raised, and the body is moved downward. As the body descends, the ridge surface grounding body 38 is pushed up by the ridge surface and rotates upward, and the spool 43a is in the neutral position where the flow of the pressure oil to the aircraft vertical hydraulic cylinder Av is blocked. When the aircraft descends, the descent stops. In this way, even if the height of the ridge fluctuates, the vertical position of the aircraft with respect to the ridge, that is, the planting position of the transplanting device 15 from the ridge (for example, the lowest point of the planting operation locus) is determined. Since the seedling can be maintained at a predetermined position, the planting depth of the seedling can be maintained and controlled at a predetermined depth. still,
Valve operating plate 43 of hydraulic valve 43 for vertical movement of the airframe
Is connected to a wire 46 connected to the body vertical lever Lv, and the body can be manually moved up and down to an arbitrary height by the lever Lv. Also, the spring 45
By adjusting the pulling force, it is possible to adjust the sensitivity of the machine vertical control corresponding to the hardness of the soil on the ridge. One end of the spring 45 is connected to the sensitivity adjusting lever S by a wire 45a. When the soil is soft, the spring 45 is loosened to reduce the pulling force, and when the soil is hard, the spring 45 is pulled to increase the pulling force. You just need to do it.

The hydraulic circuit for operating the hydraulic cylinders Av and Ar is as shown in FIG. Here, 46 is a hydraulic pump, 47 is a diversion valve, 48 and 49 are relief valves, T
Is a hydraulic tank. Now, the groove forming device 19 will be described below.
(FIGS. 7 and 8) will be described. The groove body 19
The intermittent up-down movement mechanism 50 that intermittently moves up and down a is as follows. That is, a groove forming cam 52 is fixed to a cam shaft 51 that protrudes inward from the planting portion transmission case 4 and transmits and rotates (the roller 14a of the seedling feeder 14).
Are also fixed side by side. On the other hand, links 53 (upper link 53a, lower link 53b, connecting link 53c, link pin 53d ...) are connected to brackets 3c ', 3c "fixed to horizontal frame 3c.
The roller 53e attached to the upper link 53a comes into contact with the rotation of the groove cam 52 so that the groove link 53 moves downward. In addition, a spring 54 is hung on the upper link 53a between the support member 54a fixed to the bracket 3c ", and the spring 54 urges the groove link 53 upward in a direction to move upward. 55 is the groove link 5
The stopper that regulates the upper limit position of the bracket 3 '
Attached to. Then, a connecting member 19b having a U-shaped cross section, which is inserted into and fixed to the inside of the bent portion of the V-shaped grooved body 19a having a V-shape in plan view, is attached to the connection link 53c of the link 53. It is configured to move up and down by a groove forming cam 52 rotating via the.

The groove 19a is formed by bending a rectangular thin iron plate into a V-shape, and the opening Aw toward the rear thereof is set to 30 degrees. Further, the groove body 19a is attached to be inclined forward so that the rear is higher in side view, and its inclination Ai is set to 20 degrees. The rear end of the groove forming body 19a extends so as to reach the left and right lateral positions of the transplanting blades 17, 17 when the distal ends of the seedling transplanting blades 17, 17 of the transplanting device 15 have moved to near the lowermost position. .

The construction apparatus 19 provided with the above-described intermittent vertical movement mechanism 50 operates as follows. That is, when the seedling transplanting blades 17, 17 of the transplanting device 15 start to move down across the seedlings, before the tips of the transplanting blades 17, 17 reach the ridge surface, the groove forming body 19a moves down below the ridge surface. The groove forming starts (the rotating groove forming cam 52 comes into contact with the roller 53e and pushes down to move the link 53 downward). At this time, the groove 19a
Since it is attached to the front, it enters into the soil from the tip that is bent at an acute angle. Then, the groove body 19a enters the soil to a predetermined depth and advances. At this time, since the plan view shape of the groove body 19a is V-shaped, the soil is formed so that the soil is separated into right and left.

Next, as soon as the tips of the seedling transplanting blades 17, 17 sandwiching the seedlings move downward to reach the lowermost point and the seedlings are transplanted, the groove forming body 19a immediately moves upward (groove cam 52). Is rotated to release the roller 53e from the pressed state, and the link 53 moves upward). At this time, the soil that had been separated into the left and right by the channeling body 19a flows into the groove as if it had cut off the weir, and the soil approaches the front of the seedlings transplanted into the groove. Here, the grooving body 19a moves upward immediately after the seedlings are transplanted. The optimum timing for starting the upward movement of the grooving body 19a is determined by the soil quality or the traveling speed of the grooving body 19a (running speed of the airframe). It depends on. Therefore, the upward movement start timing (the groove cam 52 with respect to the cam shaft 51)
Based on the time at which the seedlings reach the bottom of the groove, the mounting position and the shape of the groove forming cam 52 can be appropriately set at the same time as the time or immediately before or immediately after the time. By the way, after the front side of the seedlings is covered by the upward movement of the grooving body 19a, the soil covering device 20 moves forward from behind,
The soil is gathered on the left and right sides and the rear side of the seedling, and it is suppressed.

[Brief description of the drawings]

FIG. 1 is a side view of a field transplanter.

FIG. 2 is a side view of a part of the field transplanter.

FIG. 3 is a plan view of a part of the field transplanter.

FIG. 4 is a cross-sectional rear view of a part of the field transplanter.

FIG. 5 is a sectional view showing a configuration of a horizontal sensor.

FIG. 6 is a hydraulic circuit diagram of body attitude control.

FIG. 7 is a plan view showing a main part of the field transplanter.

FIG. 8 is a sectional side view showing an operation mechanism of the groove forming device.

[Explanation of symbols]

 15: Transplanting device 19: Groove device 19a: Groove body 20: Suppression device 50: Intermittent vertical movement mechanism

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Motoyuki Suzuki 1st department of Hachikura, Toze-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. No. 1 Yano, Tobe-cho, Iyo-gun, Ehime Pref. Iseki Agricultural Machinery Co., Ltd. Examiner, Etsuhiko Kami (56) Reference JP-A-1-101181 (JP, A) 59-6417 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02 A01C 5/06 A01C 13/00

Claims (1)

(57) [Claims] 1. A V-shaped groove -forming body 19a in a plan view in which a groove is formed by dividing the soil left and right in front of the planting location of the transplanting device 15.
The transplanting machine for upland field provided with a trenching device 19 provided with a soil covering device 20 for providing soil from right and left directions behind the planting location and covering the seedlings transplanted by the transplanting device 15. In the groove device 19, before the seedlings are transplanted by the transplanting device 15, the grooving body 19a moves down below the ridge surface.
When seedlings by the implant device 15 the acting groove body 19a is wade soil to the left and right while advancing Sakumizo to the acting grooves is within grooves Ru transplanted immediately Sakumizotai 19a is moved upward on the ridge surface An upland field transplanter comprising an intermittent vertical movement mechanism (50).