JP2512998B2 - Transplant device - Google Patents

Description

The present invention relates to a transplanting device such as a rice transplanter and a vegetable transplanter.

[Conventional technology and its problems]

As this type of conventional technology, resistance is externally applied to the gears to reduce the backlash of the gear train in the rotating case, and one seedling worth of seedlings from the seedlings placed on the seedling table by the seedling transplanter. There is one that reduces the fluctuation in the amount of seedlings taken out.

However, in the above-mentioned conventional one, the structure of the device for reducing the backlash is complicated and causes a failure, and the rotating case becomes large, so that it is not possible to obtain a small and lightweight transplanting device with good planting performance. there were.

[Means for solving the problem]

In order to solve the above problems, the present invention mounts a seedling transplanter 36 on the tip of a rotating case 29 that is rotatably supported by the machine body, and performs a non-constant speed meshing motion on the rotating case 29. A gear train consisting of the sun gear 31, the counter gears 32 and 32, and the planting gears 33 and 33 is provided, and the posture of the seedling transplanter 36 is changed to the seedling taking-out posture and the seedling planting posture with the rotation of the rotating case 29. In a transplanting device that takes out one seedling of one seedling from the seedling placed on the seedling placement table 20 and transplants it in the field, the seedling transplanting device 36 is a seedling of one share from the seedling placed on the seedling placement table 20. Each sun gear 31, counter gear 32, 32 and planting gear at the time of taking out
The implanting device is characterized in that the meshing resistance of 33 and 33 is larger than the meshing resistance at other times.

[Effects of the Invention]

This invention is, as described above, the seedling transplanter 36 of each sun gear 31, the counter gear 32, 32 and the planting gear 33, 33 at the time of taking out one seedling of seedling from the seedling placed on the seedling placing table 20. Since the meshing resistance is set to be larger than the meshing resistance at other times, the seedling transplanter 36 in the gear train from the sun gear 31 to the planting gear 33 corresponds to one seedling from the seedling placed on the seedling mounting table 20. Driving resistance can be applied at the time of taking out the seedlings, transmission error at the time of taking out the seedlings can be reduced, and the number of seedlings per plant is appropriate, and good seedling transplant work can be performed. At the same time, the means for reducing the transmission error is not performed by externally adding resistance to the gear as in the conventional case, so that the rotation is smooth and the planting performance is improved, the configuration is simple and there are few failures, and The rotating case can also be constructed in a small size, making it a compact and lightweight plant. It is possible to obtain a transplanting device with good attachment performance.

〔Example〕

Hereinafter, an implanting device according to an embodiment of the present invention will be described in detail with reference to the drawings.

Reference numeral 1 is a passenger towing vehicle, in which a front mission case 3 and a rear mission case 4 are provided below a flat control step floor 2, and a front axle case is provided on both left and right sides of a rear side portion of the front mission case 3. A pair of left and right front wheels 5,5 is provided for transmission rotation, rear transmission cases 6,6 are attached to the left and right sides of the rear transmission case 4, rear wheels 7,7 are provided, and an operation lever or the like is provided on the front side portion of the step floor 2. A frame 8 for mounting is installed upright, a handle 9 is provided on the frame 8 via a steering post, a cover 11 for covering the engine 10 is provided behind the handle 9, and a control seat 12 is mounted thereon.

Reference numerals 13 and 13 denote support columns, which are erected on the rear transmission case 4 on the left and right at predetermined intervals.

14 is a lifting link, the base side of a pair of left and right lower links 15a, 15a and a single upper link 15b is pivotally connected to the columns 13, 13 via pins, and the tip side is connected by a vertical link 16, The lifting link 14 is configured to be vertically turned by a hydraulic cylinder device 17.

Reference numeral 18 denotes a transplanter, which is a transmission case 19, a seedling mounting table 20 that reciprocates left and right, a transplanting device 21, and leveling floats 22 and 2 in the center and sides
The transmission case 19 is mounted on a support 24 integral with the vertical link 16 via a support shaft 25 so as to be freely rollable. The transmission case 19
On the back of the main transmission case 19a, the width transmission cases 19b, 19b
Is attached to the front end and extended rearward.

Numeral 26 denotes a seedling receiving frame, which extends laterally along the lower end of the seedling mounting table 20, and into which seedlings placed in the seedling mounting table 20 can be split. ... is provided.

The transplant device 21 is composed of the following members. That is, a drive shaft 28 protruding outward and laterally is provided on the vertical transmission case 19b so as to be driven and rotated by a transmission mechanism described later, and the distal end side of the drive shaft 28 is provided in a square shape. The rotating case 29 is attached to the drive shaft. The mounting of the rotating case 29 is configured such that the tip end side angular shaft portion 28a of the drive shaft 28 is fitted and the rotating case 29 is integrally rotated with the drive shaft 28. 30 is fixed metal,
The base is fastened to the transmission case 19b by bolts 30b, and the tip end extends into the rotating case 29 so as to surround the drive shaft 28. An engaging portion (claw) 30c is provided on the tip side of the fixed metal 30. 31 is a sun gear having an eccentric pitch circle or a non-circular pitch circle (a circle without a center).
A boss portion 31 is externally fitted to the drive shaft 28, and an engaging portion (claw) 31a is provided on one side thereof, and the engaging portion 31a engages with the engaging portion 30c of the fixed metal 30. Then, the sun gear 31 is provided so as to be housed in the rotating case 29 without rotating.

Reference numerals 32, 32 are counter gears, which mesh with the sun gear 31 and rotate as the rotating case 29 rotates. Of course, this gear is also an eccentric gear or a non-circular gear.

33 and 33 are planted gears, which are axially mounted inside the distal end side of the transplant rotary case 29, mesh with the gear 32, and the support shaft 34 of this gear is projected outward of the transplant rotary case 29 to mount the transplant tool. It constitutes the axis.

Then, the support shaft 34, which is the attachment tool attachment shaft, is configured to rotate in the opposite direction to the rotation direction of the transplant rotation case 29, and its rotation speed is the same as that of the transplant rotation case 29, and the gear
The angular velocity for one rotation is changed by transmission of 31,32,33. And these gears 31,3
The meshing setting positions of 2,33 are the other portions where the tooth thickness t ₁ of each gear is not divided so that the backlash is minimized when the seedling transplanting nail 39 divides the seedling from the seedling mounting table 20. The tooth resistance is set to be larger than the tooth thickness t _{2 of the} above, and the meshing resistance is larger than the meshing resistances at other times. still,
Of course, it is sufficient to increase the tooth thickness of only one of the pair of meshing gears.

A cam mounting cylinder shaft 35 is provided so as to cover the support shaft 34, and its base end side is fixed to the transplant rotary case 29 so as to rotate integrally with the case 29.

36 is a seedling transplanter, and the support shaft 34 penetrates through the hollow case of this seedling transplanter 36, and the transplanter case 36a is provided on the tip side thereof.
The metal 37 that doubles as the lid of
The implant case 36a is provided so as to be rotatable around a boss that encloses the implant.

The cam mounting cylinder shaft 35 extends to the inside of the hollow of the implant case 36a, and the cam body 38 having a part of the outer circumference spiraled is attached to the shaft 35.

39 is a seedling transplant nail, which is fixed to the front end surface of a long case on the front side of the transplant case 36a downward,
In the illustrated example, the needle-shaped nails are formed in a pair of left and right. 40 is a seedling transplant push-out claw, which is provided with an elevating shaft 41 that moves in and out from the lower part of the front end side of the transplant tool case 36a, and is fixed to the lower end of this protrusion, and the upper end of this elevating shaft 41 is set by a spring 42 in the transplant tool case. It is provided to be sent down.

The cam body 38 and the elevating shaft 41 are linked by a lever 43. Reference numeral 44 denotes a pivot pin of the lever 43.

45 Use the expansion and contraction adjustment setting device to move the implant case 36a
It is a device for adjusting the angle of attachment with respect to 4, and a shaft 47 pivotally supported by a lateral pin 46 is attached to the lower end side of the case portion that encloses the vertically long vertical shaft 41 on the front side of the implant case 36a. , A nut 49 which is also pivotally supported by a pin 48 is provided on the head of the shaft 47, and a bolt 50 screwed to the nut 49 is screwed to the metal 37 with a screw screwed to the nut 49 and a reverse screw. The bolt 50 is configured to rotate forward and backward to adjust the mounting angle of the implant case 36a with respect to the metal 37. 51 indicates a nut for setting.

Explaining the operation of the above example, when the seedlings are placed on the seedling mounting table 20 and each part is driven by the engine 10, the passenger towing vehicle 1 is propelled by the rotation of the front wheels 5 and the rear wheels 7, and the transplanter 18 parts are moved. Part of the load is received by the leveling floats 22, 23, 23 and pulled, and power is transmitted from the front mission case 3 side into the transmission case 19 via the transmission shaft, and the drive shaft 28 is transmitted. Then, by the rotation of the drive shaft 28, the transplantation rotation case 29 is driven, and the support shaft 34 which is the transplantation tool attachment shaft is transmitted from the sun gear 31 in the case 29 through the counter gear 32 and the planting gear 33. , The implant 36 is swung. That is, a loop-shaped transplant locus P is drawn in the vertical direction in which the tip of the seedling transplant nail 39 of the transplant tool 36 is shown. And
At the time of dividing the seedling from the seedling mounting table 20 in which the seedling transplanting claw 39 reciprocates laterally, the meshing resistance of the sun gear 31, the counter gear 32, and the planting gear 33 becomes larger than the meshing resistance at other times. Since it is set as described above, drive resistance can be applied when the seedling transplanter 36 takes out one seedling of the seedling from the seedling placed on the seedling placing table 20, and transmission at the time of taking out the seedling The error can be reduced, and the number of seedlings per plant becomes appropriate, and good seedling transplanting work can be performed.

Also, as a means for reducing the transmission error, seedling transplant nails
At the time when 39 divides the seedlings from the seedling mounting table 20, each gear at the time when the seedling transplanting nail 39 divides the seedlings from the seedling mounting table 20 so that the backlash of each gear 31, 32, 33 is minimized. Since the tooth thickness t ₁ of the meshing part of is made larger than the tooth thickness t ₂ of the other part where the seedling is not divided, and the meshing resistance becomes larger than the meshing resistance at other points, Compared to adding resistance to reduce transmission error,
The rotation is smooth and the planting performance is improved. The configuration is simple and there are few failures. The rotating case can also be made compact, resulting in a compact, lightweight planting device with good planting performance.

On the other hand, the cam 38 that rotates together with the rotating case 29 has a lever
A cam floor 43a that is integrally provided on the base side of 43 is actuated by a spring 42 correspondingly, and the elevating shaft 41 moves up and down to push the pushing claw 40a.
When the seedlings are split, they are located at the upper position and engage with the upper surface of the seedlings, and at the time of transplantation, they rapidly descend. Such implants 36
By the above operation, the seedlings are divided and held one by one from the seedling dividing opening 27 of the seedling receiving frame 26, transferred to the soil surface, and transplanted.

In addition, when the seedling transplant nail 39 intervenes in the seedling dividing port 27, the nail 39
If the distance between the tip of the seedling and the edge of the split mouth is not adjusted as specified, seedling separation will not be ensured. Therefore, in this adjustment, the bolt 50 may be rotated forward or backward to rotationally adjust the implant case 36a, and the tip of the separation claw may be adjusted back and forth to set. Further, since the expansion and contraction adjustment setting device 45 is located on the front side of the support shaft 34 provided with the seedling transplanting claw and the pushing claw, the rear side of the support shaft 34 can be formed in a compact shape without being largely expanded, and can be rotated. Sometimes it's less intrusive.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a partially cutaway side sectional view, FIG. 2 is a plan sectional view of an essential part, and FIG.
The figure is a side view of the transplanter, and FIG. 4 is a plan view of the main part.
The symbols in the figure are as follows. 20 …… Seedling stand, 29 …… Rotating case 31 …… Sun gear, 32 …… Counter gear 33 …… Planting gear, 36 …… Seedling transplanter

Claims (1)

(57) [Claims] 1. A seedling transplanter 36 is attached to the tip of a rotating case 29 that is rotatably supported by the machine body, and a sun gear 31 and a counter gear 32 that make an unequal speed meshing motion on the rotating case 29. 32
By providing a gear train consisting of and the planting gears 33, 33, the posture of the seedling transplanter 36 is displaced between the seedling taking-out posture and the seedling planting posture in accordance with the rotation of the rotating case 29 and placed on the seedling placing table 20. In a transplanting device for taking out one seedling of the seedling from the placed seedling and transplanting it in the field, the seedling transplanting device 36 and each sun gear 31 at the time of taking out the one seedling of the seedling from the seedling placed on the seedling placing table 20. An implanting device characterized in that the meshing resistance of the counter gears 32, 32 and the gears 33, 33 is larger than the meshing resistance at other times.