JPH11289823A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of accurately regulating the transplanter to the preset vehicle height. SOLUTION: This seedling transplanter is obtained by installing a vehicle height detecting means 61 for detecting the vehicle height of a machine body and a lowering stopping means 55 for stopping the lowering operation of an upper and lower position regulating mechanism in the upper and lower position regulating mechanism and is capable of stopping the lowering operation of the upper and lower position regulating mechanism with the lowering stopping means 55 when the attainment of the preset vehicle height is detected with the vehicle height detecting means 67 in the seedling transplanter obtained by installing a tillage device at the front of a machine body frame 2, arranging a seedling transplanting device at a rear position of the tillage device and, on the other hand, installing front and rear wheels 9... through the upper and lower position regulating mechanism in the front and rear of the machine body frame 2 so that the vehicle height can be regulated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a seedling transplanter.

[0002]

2. Description of the Related Art As a conventional seedling transplanter, a tilling device is disposed at a front portion of a body frame, and a seedling transplanting device is disposed at a rear position of the tilling device. The wheels are arranged via a vertical position adjusting mechanism, and furthermore, the rear end of the body frame, and the base end of the pressure-reducing roller support arm is pivotally attached to the rear position of the tilling device so as to be vertically rotatable, It is known that a pressure-reducing roller is rotatably supported at the tip of the pressure-reducing roller support arm.

In such a conventional seedling transplanter, the vehicle height is detected based on the vertical rotation angle of the pressure-reducing roller support arm, and the pressure-reducing roller and the pressure-reducing roller support arm are used to detect the vehicle height. Functioned as a vehicle height sensor.

[0004]

However, in the above-described conventional seedling transplanter, a pressure reduction roller and a pressure reduction roller support arm are used as a vehicle height sensor.
Since the pressure reduction roller was disposed at the rear position of the tilling device, the pressure reduction roller would contact the bottom of the groove formed by the tilling device, while the front and rear wheels would contact the left and right sides of the groove. The contact height between the roller and the front and rear wheels is different, and it is not possible to detect the exact vehicle height,
It was difficult to keep the height of the seedling transplanter at a height suitable for seedling transplantation work.

[0005]

Therefore, according to the present invention, a tilling device is provided at the front of the body frame, and a seedling transplanting device is provided at a position rearward of the tilling device. In a seedling transplanter configured such that the front and rear wheels are arranged via a vertical position adjusting mechanism to adjust the vehicle height, the vertical position adjusting mechanism includes a vehicle height detecting means for detecting the vehicle height of the body. And a descent stop means for stopping the descent operation of the up / down position adjustment mechanism, and when the vehicle height detection means detects that the vehicle height reaches a preset height, the descent stop means adjusts the up / down position. The mechanism is configured to stop the lowering operation of the mechanism.

Further, the vehicle height detecting means is configured to detect the vehicle height of the body based on the turning angle of the axle case linked to the rear wheel.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a seedling transplanter according to the present invention, a tilling device is disposed at a front portion of a body frame, and a seedling transplanting device is disposed at a rear position of the tilling device. The front and rear wheels are arranged in the section via a vertical position adjusting mechanism so that the vehicle height can be adjusted.

In addition, the vertical position adjusting mechanism is provided with vehicle height detecting means for detecting the vehicle height of the body and descent stopping means for stopping the lowering operation of the vertical position adjusting mechanism.
When the vehicle height is detected by the vehicle height detecting means, the descent operation of the vertical position adjusting mechanism is stopped by the descent stopping means.

Therefore, according to the type of the seedling to be transplanted, the height of the seedling transplanter can be adjusted to a predetermined height, and the depth of the groove for planting the seedling can be adjusted.

Further, the vehicle height detecting means is configured to detect the vehicle height of the body based on the rotation angle of the axle case interlocked with the rear wheels, so that the vehicle height of the body is determined with reference to the grounding positions of the front and rear wheels. The height is detected, and the vehicle height of the aircraft can be accurately detected.

[0011]

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

FIG. 1 is a view showing a seedling transplanter 1 according to the present invention. The seedling transplanter 1 is provided with a tilling device 3 at a lower front side of an airframe 2 and a rearward position of the tilling device 3. A seedling transplanting device 4 is disposed on the upper side of the machine frame 2 while a seedling supplying device 5 is disposed above the seedling transplanting device 4, while an engine 6 is disposed on the front upper portion of the body frame 2. A steering operation device 7 is disposed at an upper portion, and a pair of left and right front and rear wheels 8, 8, 9, 9 are disposed via a vertical position adjusting mechanism 10 at front and rear portions of the body frame 2.

In the seedling transplanter 1, a soil removal plate 14 for forming a seedling planting groove 13 is attached to the bottom part 12 of the groove 11 formed by the tilling device 3 in the lower part of the body frame 2 in a downward direction. At the same time, a handle frame 15 for supporting the steering operation device 7 is continuously provided at the rear end of the body frame 2, and a pressure reduction roller 16 is attached to a lower part of the handle frame 15 via a pressure reduction roller lifting mechanism 17. The pressure reduction roller 16 is moved up and down by the pressure reduction roller lifting mechanism 17 so that the pressure reduction force of the pressure reduction roller 16 can be adjusted.
In the figure, reference numeral 18 denotes an auxiliary roller rotatably attached to the front end of the body frame 2.

In the seedling transplanter 1, the seedlings 19 supplied from the seedling supplier 5 are planted by the seedling transplanter 4 in the grooves 11 formed by the tilling device 3, and a vertical position adjusting mechanism is provided. The vehicle height can be adjusted by raising and lowering the front and rear wheels 8, 8, 9, 9 with 10.

As shown in FIG. 1, the tilling apparatus 3 has a cylindrical interlocking shaft case 20 attached to the front end of the body frame 2 in an inclined manner from the front end of the body frame 2 toward the rear lower part.
At the lower end of the interlocking shaft case 20, a tilling shaft 21 extended toward the left and right width direction of the aircraft is rotatably mounted, and four tilling claws 22 are radially mounted on the outer peripheral surface of the tilling shaft 21, Tillage axis
21 is linked to the engine 6.

The grooves 11 are formed in the field by rotating the tilling claws 22 while the vehicle is running.

The seedling supply device 5 transports a seedling tray 23 in which a plurality of seedlings 19 are arranged in front, rear, left and right directions from a lower front side to an upper rear side by a transport mechanism (not shown). The seedlings 19 are transferred from the seedling tray 23 to the seedling supply tube 25 by the seedling removal claw 24, and the seedlings 19 are supplied to the seedling transplanting device 4 at the lower end of the seedling supply tube 25.

The seedling transplanting device 4 includes a pair of front and rear opening pieces 26, 26 '.
Reciprocating motion so that the tip thereof draws a vertical elliptical locus in the vertical direction, and receives the seedling 19 from the seedling supply device 5 at the upper end portion of the vertical elliptical locus, while the lower end portion of the vertical elliptical locus In this embodiment, the opening pieces 26, 26 'are expanded in the front-rear direction, so that the seedlings 19 are planted in the seedling-planting grooves 13.

The front and rear wheels 8, 8, 9, 9 are attached to the body frame 2 as follows.

That is, a cylindrical front wheel support shaft case 28 extending in the left-right width direction is attached to the front end of the body frame 2, and a pair of left and right front wheel support shafts 29, 29 are attached to the front wheel support shaft case 28. The base end is rotatably inserted and the front wheel support shaft is
The base ends of the front wheel support arms 30, 30 are connected to the rear ends of the front wheel support arms 30, 30, and the front wheels 8, 8 are connected to the front wheel shafts 31 at the front ends of the front wheel support arms 30, 30, respectively. , 31 for pivotal support.

On the other hand, a transmission case 32 interlocked with the engine 6 is attached to the lower part of the body frame 2, and drive shafts 33, 33 are protruded on both left and right sides of the transmission case 32.
The base ends of the axle cases 34, 34 are linked to the tip of the drive shafts 33, 33 toward the rear of the fuselage, and the rear wheels 9, 9 are attached to the front ends of the axle cases 34, 34. They are linked and linked via 35,35.

As shown in FIGS. 2 to 4, the vertical position adjusting mechanism 10 mounts a hydraulic cylinder 36 for adjusting the vertical position on the body frame 2 with an advancing / retracting rod 37 inclined upward toward the rear of the body. At the tip of the reciprocating rod 37, an intermediate part of the operating rod 38 extended in the left-right width direction is attached, and the left and right ends of the operating rod 38 are connected to the base ends of the connecting rods 39, 39, respectively.
At the tip of the connecting rods 39,39, it is linked to the tips of the brackets 40,40 projecting from the upper ends of the left and right axle cases 34,34, and further linked to the middle of the brackets 40,40. Rods 41,4
The base end of 1 is interlocked and connected to the tip of the interlocking rods 41, 41,
The front end portions of brackets 42, 42 projecting upward in the middle of the front wheel support shafts 29, 29 are interlocked and connected. In the figure, 43
Is a joint for adjusting the length.

A pair of left and right guide plates is provided on the body frame 2.
Install 44,44 in parallel with a gap in the left and right width direction.
Guide grooves 45, 45 are formed in the guide plates 44, 44 in parallel with the reciprocating rod 37 of the hydraulic cylinder 36, and the guide grooves 45, 45 are formed.
The operating rod 38 is inserted through the hydraulic cylinder 36 so that the operating rod 38 advances and retreats along the guide grooves 45 and 45 as the hydraulic cylinder 36 advances and retreats.

The hydraulic cylinder 36 for adjusting the vertical position can be moved forward and backward by an operation lever of the steering operation device 7.

That is, the hydraulic motor 52 is linked to the engine 6, the hydraulic pump 53 is linked to the hydraulic motor 52 and the hydraulic cylinder 36 is linked to the hydraulic pump 53, and the trunnion arm of the hydraulic pump 53 is connected. The operation lever is linked to 54.

As described above, the vertical position adjusting mechanism 10
By operating the operation lever to rotate the trunnion arm 54 rearward and advance the retraction rod 37 of the hydraulic cylinder 36 toward the rear of the fuselage, the operating rod 38 also moves rearward of the fuselage. Accordingly, the connecting rods 39, 39 rotate the axle cases 34, 34 downward around the drive shafts 33, 33, and the interlocking rods 41, 41 move the front wheel support arms 30, 30 forward. By rotating the wheel support shafts 29, 29 downward, the front and rear wheels 8, 8, 9, 9 are lowered, so that the height of the seedling transplanter 1 is increased.

On the other hand, the operating lever 38 is turned forward by rotating the trunnion arm 54 by operating the operating lever, and the reciprocating rod 37 of the hydraulic cylinder 36 is retracted forward of the fuselage. , The connecting rods 39, 39 rotate the axle cases 34, 34 upward around the drive shafts 33, 33,
1,41 move the front wheel support arms 30,30 to the front wheel support shafts 29,29
And turn it upwards around the front and rear wheels 8,8,9,9
Is raised so that the height of the seedling transplanter 1 becomes lower.

As described above, since the vehicle height can be adjusted by providing the vertical position adjusting mechanism 10, during traveling on the road, the front and rear wheels 8, 8, 9, 9 are lowered to increase the vehicle height.
The tilling device 3 and the pressure-reducing roller 16 arranged at the lower part of the fuselage do not hinder the running, and at the time of transplanting the seedlings, the front and rear wheels 8, 8, 9, 9 are raised or lowered to adjust the vehicle height. By doing so, the depth of the groove 11 formed by the tilling device 3 can be adjusted.

The vertical position adjusting mechanism 10 is provided with rolling means 46 for moving the left and right front and rear wheels 8, 8, 9, 9 in up and down directions.

That is, as shown in FIGS. 2 to 4, the rolling means 46 moves the rolling hydraulic cylinder 47 to the right side of the hydraulic cylinder 36 for adjusting the vertical position.
48 is disposed obliquely upward toward the rear of the fuselage, and is linked to the tip of the reciprocating rod 48 and the tip of a bracket 49 projecting upward in the middle of the operating rod 38. , Operating rod
At the left end of the bracket 38, a bracket 50 projects upward, and at the tip of the bracket 50, a connecting rod 39 is interlocked and connected, while at the right end of the operating rod 38, a bracket 51 projects downward and projects. The connecting rod 39 is connected to the tip of the bracket 51 in an interlocking manner.

The operating rod 38 rotates rearward by moving the reciprocating rod 48 of the hydraulic cylinder 47 toward the rear of the body, whereby the left connecting rod 39 moves rearward. And while the front and rear wheels 8, 9 on the left descend,
The right connecting rod 39 moves forward, and the right front and rear wheels 8, 9
Is trying to rise.

On the other hand, by retreating the forward / backward rod 48 of the hydraulic cylinder 47 toward the front of the body, the operating rod 38 rotates forward, and accordingly, the left connecting rod 39 moves forward. Thus, the left and right wheels 8, 9 are raised, while the right connecting rod 39 is moved backward, and the right and left wheels 8, 9 are lowered.

As described above, since the rolling means 46 is provided, the posture of the body can be maintained substantially horizontal even when traveling on a field having a step in the left-right width direction.

The vertical position adjusting mechanism 10 is provided with a vehicle height detecting means 67 for detecting the vehicle height of the body and a descent stopping means 55 for stopping the lowering operation of the vertical position adjusting mechanism 10. I have.

That is, as shown in FIGS. 5 and 6, the vehicle height detecting means 67 mounts a drive shaft case 56 coaxially with the drive shaft 33 at the base end of the right axle case 34.
A sensor bracket 57 projects upward from 56, and a sensor arm 58 is attached to the tip of the sensor bracket 57.

The vehicle height detecting means 67 is connected to the axle case 34.
Is rotated about the drive shaft 33, the sensor arm 58 is also rotated about the drive shaft 33, and the rotation angle of the axle case 34 linked to the rear wheel 9 is adjusted. The vehicle height of the aircraft can be detected based on this.

The descent stopping means 55 pivotally connects the base end of a substantially inverted L-shaped operating body 59 to the body frame 2 so as to be vertically rotatable, and connects the base end of the connecting body 60 to the distal end of the operating body 59. Parts are linked and connected, and the trunnion arm 54 of the hydraulic pump 53 is
The tip of is linked.

The connecting body 60 includes a sensor 77 connected to the sensor arm 58 and a trunnion arm 75 connected to the trunnion arm 54 connected to the trunnion arm 54. The spring 77 is an elastic member. The rotation of the sensor arm 58 is not directly transmitted to the trunnion arm 54, but is transmitted by being relaxed by the spring 77, so that the rotation of the sensor arm 58 The vibration is absorbed by the spring 77 and is not transmitted to the trunnion arm 54, and the rotation operation of the trunnion arm 54 becomes slower than the rotation operation of the sensor arm 58. The stop operation can be made smooth.

Then, the operating lever is operated to operate the hydraulic pump.
By rotating the trunnion arm 54 of the 53 forward, the lowering operation of the vertical position adjusting mechanism 10 is performed, as shown in FIG.
When the axle case 34 rotates upward, the sensor arm 58 rotates forward and downward, and the sensor arm 58 rotates approximately 90 degrees. Roller 61 that is rotatably supported
One end of 59 is in contact with a contact portion 62 formed by bending inward of the fuselage, and the operating body 59 is further provided with a spring 63 provided between the operating body 59 and the body frame 2. Rotating forward and downward against the urging force, the connecting body 60 moves rearward with this, and the trunnion arm 54 of the hydraulic pump 53 is moved.
Is turned backward, and the trunnion arm 54 of the hydraulic pump 53 is set in a neutral state.
10 descent operation is stopped.

The sensor arm 58 includes a sensor bracket
The mounting position is adjustable on 57. That is, a sensor arm 58 is pivotally attached to the sensor bracket 57 so as to be vertically rotatable about a pivot 64, and a semicircular long hole 65 centering on the pivot 64 is formed in the sensor bracket 57.
The sensor arm 58 is fixed to the sensor bracket 57 by the bolt 66 inserted through the hole 65, and the mounting position of the sensor arm 58 is adjusted within the range of the long hole 65.

When the sensor arm 58 is mounted on the sensor bracket 57 while rotating the sensor arm 58 toward the rear of the machine body, the roller 61 of the sensor arm 58 is kept in contact with the contact portion 62 of the operating body 59. Therefore, the turning angle of the axle case 34 becomes large, so that the height of the seedling transplanter 1 can be reduced.

On the other hand, when the sensor arm 58 is mounted on the sensor bracket 57 in a state where the sensor arm 58 is rotated toward the front of the body, the roller 61 of the sensor arm 58 is kept in contact with the contact portion 62 of the operating body 59. Therefore, the turning angle of the axle case 34 becomes smaller, and therefore, the vehicle height of the seedling transplanter 1 can be increased as compared with the above case.

As described above, by adjusting the mounting position of the sensor arm 58, the position at which the descent operation of the vertical position adjustment mechanism 10 is stopped by the descent stop means 55 can be set in advance. The vehicle height of the machine 1 can be set in advance.

As described above, by providing the vertical position adjusting mechanism 10 with the descent stopping means 55, the height of the seedling transplanter 1 can be set to a predetermined height, and the type of the seedling 19 to be transplanted can be set. Accordingly, the depth of the groove 11 for planting the seedlings 19 can be set.

Moreover, since the vehicle height of the body is detected by the rotation angle of the axle case 34 in which the rear wheels 9 are interlocked and connected,
The vehicle height of the airframe is detected based on the ground contact positions of the front and rear wheels 8, 9, and the vehicle height of the airframe can be accurately detected.

As shown in FIG. 1, seedling tray housings 68 are disposed at the left and right sides of the machine.
68 is used for arranging the seedling tray 23 in which a plurality of seedlings 19 are arranged in front, rear, left and right, and for holding the used empty seedling tray 23 after transplanting the seedlings 19 It is.

The seedling tray housing 68 is, as shown in FIG.
The upper part comprises a mounting table 69 for mounting the seedling tray 23 and a storage part 70 for storing and holding the seedling tray 23.

The mounting table 69 includes mounting tables 71, 71 arranged in parallel at an interval in the front and rear, and both mounting tables 71, 7.
1 and a substantially U-shaped connecting body 72 in a side view, which is provided between the base ends.

Then, as shown in FIG. 8, the mounting table 69 is inserted into the tray pots 73, 73 adjacent to the seedling tray 23. Body 7
The seedling tray 23 can be placed on the upper part of 1,71.

Further, the interval between the two mounting table members 71, 71 is
As shown in FIG. 8, the tray pots adjacent to the various seedling trays 23 can be inserted between the tray pots 73, 73 adjacent to the plurality of seedling trays 23. It is an integral multiple of the least common multiple of the interval 73,73.

Thus, various seedling trays 23 can be placed above the seedling tray storage table 68.

The storage section 70 is composed of storage section members 74, 74, which are substantially U-shaped when viewed from the front and are arranged at an interval in the front-rear direction. It is connected to.

The two housing section members 74, 74 can hold and hold a plurality of empty seedling trays 23 in a vertically superposed state.

[0054]

The present invention is embodied in the form described above and has the following effects.

(1) According to the first aspect of the present invention, the vertical position adjusting mechanism includes a vehicle height detecting means for detecting the vehicle height of the body, and a descent stop for stopping the lowering operation of the vertical position adjusting mechanism. Means for stopping the descent operation of the vertical position adjustment mechanism by descent stop means when the vehicle height detection means detects that the vehicle height has become a preset height. According to the type of the seedling, the height of the seedling transplanter can be adjusted to a preset height to adjust the depth of the groove for planting the seedling.

(2) According to the second aspect of the present invention, since the vehicle height detecting means is configured to detect the vehicle height of the body based on the rotation angle of the axle case linked to the rear wheels, Since the vehicle height of the aircraft is detected based on the ground contact positions of the front and rear wheels, the vehicle height of the aircraft can be accurately detected.

[Brief description of the drawings]

FIG. 1 is a side view showing a use state of a seedling transplanter according to the present invention.

FIG. 2 is a plan view showing a vertical position adjusting mechanism.

FIG. 3 is a left side view of the same.

FIG. 4 is a right side view of the same.

FIG. 5 is a side view showing a vehicle height detection unit and a descent stop unit.

FIG. 6 is a plan view of the same.

FIG. 7 is a perspective view showing a seedling tray storage table.

FIG. 8 is an explanatory side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Body frame 3 Tillage device 4 Seedling transplanter 5 Seedling supply device 6 Engine 7 Steering operation device 8,9 Front and rear wheels 10 Vertical position adjustment mechanism 11 Groove 32 Transmission case 34 Axle case 36,47 Hydraulic cylinder 53 Hydraulic Pump 54 trunnion arm 55 descent stop means 57 sensor bracket 58 sensor arm 67 vehicle height detection means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takakatsu Ito 1-32 Chaya-cho, Kita-ku, Osaka-shi, Osaka Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Yoshiaki Kuraya 1 Chaya-cho, Kita-ku, Osaka, Osaka No. 32 Inside Yanmar Agricultural Machinery Co., Ltd.

Claims (2)

[Claims] 1. A tilling device (3) in front of a body frame (2).
The seedling transplanter (4) is located at the rear of the tilling device (3), while the front and rear wheels (8, 8, 9, 9) are moved up and down on the front and rear parts of the body frame (2). In a seedling transplanter that is arranged via a position adjusting mechanism (10) so that the vehicle height can be adjusted, the vertical position adjusting mechanism (10) detects the vehicle height for detecting the vehicle height of the body. Means (67), and a descent stopping means (55) for stopping the descent operation of the vertical position adjusting mechanism (10), so that the vehicle height detected by the vehicle height detecting means (67) is reached. A seedling transplanter characterized in that when detected, the descent stopping means (55) stops the lowering operation of the vertical position adjusting mechanism (10). 2. The vehicle height detecting means (67) is configured to detect a vehicle height of the body based on a turning angle of an axle case (34) interlocked with a rear wheel (9). The seedling transplanter according to claim 1.