JPS63185308A - Power transmission in granule delivery apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a power transmission device for a granular material dispensing device such as a seeding machine or a fertilizing machine for dispensing seeds or granular fertilizer.

Conventional technology Conventionally, two one-way transmission clutches were attached to the drive shaft of a granular material dispensing device, one clutch was rotated in conjunction with the crank mechanism via a connecting rod, and the other clutch was attached to the machine frame side of the dispensing device. A power transmission device for a granular material dispensing device is known, which is configured to be fixed to the granular material dispensing device to prevent the reversal of the dispensing roll of the dispensing device.

Problems to be Solved by the Invention In the prior art, a one-way transmission clutch receives power from a crank mechanism on a horizontally long drive shaft itself that drives a feeding roll of a granular material feeding device that is arranged at a predetermined distance from side to side. and a one-way transmission clutch that prevents the drive shaft from reversing, but when the one-way transmission clutch is installed in a specific position, it is difficult to assemble, and the shaft may become distorted during assembly. It was difficult to drive the vehicle accurately.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention takes the following technical means.

That is, the present invention has a granular material dispensing device 11, which is located at the lower part of a storage tank 10 that accommodates granular materials such as seeds and granular fertilizers, and which has a dispensing roll B for dispensing granular materials on the dispensing case 15 side. The left and right feeding rolls 15.15 are arranged at a constant interval and rotationally transmitted by a single drive shaft 22.
A cover tube 24 is provided which is fitted into and fixed to the cover tube 2.
4, two one-way transmission clutches are installed in parallel, one transmission clutch 25 is driven from a crank mechanism via a connecting rod 30, and the other transmission clutch 26 is driven by a delivery roll to prevent the cover tube 24 from reversing. B was used as a power transmission device in a granular material feeding device which is integrally attached to the side of the case 15 that is housed inside.

Functions and Effects of the Invention According to the present invention, a part of the assembly in which the two one-way transmission crank notches 25 and 26 are inserted and fixed to the cover shaft 24 is attached to the shaft that drives the feeding rolls B and B of the left and right granular material feeding devices. Assembling is extremely simple, as all you have to do is fit it in and fix the cover tube 24 to the shaft, fix one transmission clutch to the case side of the feeding device, and connect the other clutch to the connecting rod connected to the crank. Moreover, since the rotation of the drive shaft 22 is transmitted through the cover tube 24 which prevents reverse rotation, the delivery rolls B, B are accurately driven without being reversed, and the granular material can be delivered accurately. play.

Embodiment A power transmission device for a granular material feeding device of a rice transplanter with a fertilization device, which is an embodiment of the present invention, will be described in detail with reference to the drawings.

1 is a passenger towing vehicle. Reference numeral 2 denotes a rice transplanter, which is attached to the rear of the towing vehicle 1 via a lifting link mechanism 3. This rice transplanter 2 is provided with a seedling platform 5 whose front side is tilted upward at the upper part of the front side of a planting transmission case 4 which also serves as a machine frame so that the seedling platform 5 can be moved back and forth from side to side. A transplanting device 6 for dividing and transplanting seedlings is provided, and soil leveling floats 7a and 7b are attached to the lower part. The rice transplanter 2 is a double-row type rice transplanter that includes a plurality of the transplanting devices 6 at predetermined intervals in the left-right direction.

The fertilizer applicator 8 has a fertilizer storage tank 10 attached to the rear of the planting transmission case 4 via a stay 9, a fertilizer feeding device 1 installed at the bottom thereof, and a funnel 12 attached to the bottom of this feeding device vi11. A feeding section unit A consisting of
4 are connected so that the fed fertilizer is spread throughout the paddy fields. The same number of fertilizer applicators 8 as the number of bases of the transplanting devices 6 are installed in the left and right directions.

To explain the fertilizer dispensing device 11 in detail, a dispensing case 15 having an opening that communicates with the fertilizer storage tank 10 and the funnel 12 has a cylindrical screw shaft that also serves as a bearing and has a screw bored in the outer periphery of the base side. 16 is integrally provided, bushings 17 and 18 are inserted and fixed into the unscrewed part on the tip side of the screw shaft 16, and a granular material feeding roll B which pumps fertilizer into the bushing part and feeds it out. It is used as a support. The feed roll B consists of a grooved roll 19 and a fork roll 20, and the grooved roll 19 is rotatably fitted to the bushing 17. A fork roll 20 having a fork 20a movable in the direction is provided, and a boss part of a gear 21 whose boss part is screwed into the screw shaft 16 is engaged with the fork roll 20 so as to be rotatable and connected in the axial direction. I'm used to it. A clutch 23 is provided between the drive shaft 22, which is inserted into the cylinder of the screw shaft 16 and is freely rotatable, and the grooved roll 19, so that the power of the feeding device can be switched on and off.

The rotation transmission mechanism of the drive shaft 22 is constructed by fitting a cover tube 24 with a one-way rotary clutch 25, 26 fitted onto the drive shaft 22 located between the left and right feeding devices 11.11. 24 is supported by one end of the feeding case 15 via a bushing 27, and an actuation arm 28 fixed to the outside of the one rotary clutch 25 @ 25a is located on the outer surface of the planting transmission case 4. An arm 31 connected to the rotating crank 29 via a connecting rod 30 and fixed to the outer shaft 26a of the other rotary clutch 26 is fixed to the feeding case 15 with a bolt 32, and the cover tube 24 is connected to the outer shaft 26a of the other rotary clutch 26. It is fixed to the drive shaft 22 with a set bolt 33.

The one-way rotary clutches 25 and 26 of the embodiment have tapered cam surfaces (A) on the inner circumferential surfaces of the outer shafts 25a and 26a inserted into the cover tube 24, in which the diameter from the axis changes from small to large.
The structure is such that a plurality of steel rolls 34 are provided in succession and a steel roll 34 is interposed between the cover tube and the outer ring in correspondence with the cam surface.
Of course, the structure is not limited to this one-way rotation clutch, and a well-known model ratchet mechanism may be used.

To explain the operation of the upper side, when granular fertilizer is stored in the fertilizer storage tank 10 of the fertilizer applicator 8 and rice planting work is started, the crank 29 protruding from the side of the planting transmission case 4 rotates together with the operation of the transplanting device 6. The one-way rotation clutch 25 is operated via the connecting rod 3o. That is, connecting rod 3
0, the steel roll 34 moves to the small diameter side of the cam surface (a) and the outer ring 25 is moved through the steel roll 34.
The cover tube 24 is rotated from the a side, and the drive shaft 22 is transmitted and rotated from the cover tube 24 via the set bolt 33. Further, when the connecting rod 30 is not moving, the steel roll 34 moves toward the larger diameter side of the cam surface (A), and power is not transmitted to the cover tube 24. Also, at this time, although the cover tube 24 is not rotated, the outer shaft 26a of the other rotary clutch 26 is attached to the feeding case 15.
Since the drive shaft 22 is attached to the drive shaft 22, this round trip is reliably avoided and the drive shaft 22 is accurately transmitted.

In this way, the drive shaft 22 is rotated by the rotation transmission system of the transplanting device 6, and the grooved rolls 19 of each feeding device 11, 11... are transmitted and rotated via the clutch 23, and are fitted into the grooves 19a. The matching fork rolls 20 are also rotated. Therefore, the fertilizer is pumped into the groove 19a of the grooved roll 19 that is not filled by the fork roll 20, is discharged into the lower funnel 12, flows down the transfer hose 14, is discharged into the furrower 13, and is planted. Fertilizer is applied at the same time.

Therefore, the particulate material delivery roll B of the delivery device 11 is accurately driven without commuting by a crank mechanism, and the particulate material is delivered accurately. Also, this feeding roll B
The transmission configuration of the drive shaft 22 simplifies assembly.

The lower end of the transfer hose 14 and the groove cutter 13 are connected via a dogleg-shaped tube 35 made of resin and having a collar 35a and ribs 35b on the outer periphery of the base side.
This doglegged tube 35 is set on the body side of the rice transplanter 2,
A ring fitting 36 made of a thin iron plate is attached via a stay 37, and the doglegged tube 35 is inserted through this ring fitting 36, and its protruding rib 35b is fitted into a hole 36a formed in the ring fitting 36. As shown in FIG. 7, the ring fitting 36 is compressed and deformed to prevent rotation and fall.

[Brief explanation of the drawing]

The figures show a rice transplanter with a riding type fertilizer applicator according to an embodiment of the present invention, in which Fig. 1 is an overall side view, Fig. 2 is an overall plan view,
Fig. 3 is an enlarged side view of Fig. 1, Fig. 4 is an enlarged plan sectional view of the main part, Fig. 5 is a side sectional view of the main part, Fig. 6 is a plan sectional view of the main part, and Fig. 7 is a plan sectional view of the main part. A side view of the main parts is shown. Symbols in the figure: 10 is a storage tank, 11 is a granular material feeding device, 15 is a feeding case, 22 is a drive shaft, 24 is a cover tube, 25
．． 26 is a one-way transmission clutch, 29 is a crank, and 30 is a connecting rod.

Claims (1)

[Claims] Storage tank 10 that accommodates granular materials such as seeds and granular fertilizers
A granular material dispensing device 11 for dispensing a granular material dispensing roll B within a dispensing case 15 is provided at a constant interval on the left and right, and the left and right dispensing rolls 15, 1
5 is rotationally transmitted by a single drive shaft 22, a cover tube 24 is provided which is fitted and fixed to the drive shaft 22 located between the left and right feeding cases, and a one-way transmission clutch is attached to the cover tube 24. A case 15 in which two transmission clutches 25 are arranged in parallel, one transmission clutch 25 is appropriately driven from a crank mechanism via a connecting rod 30, and the other transmission clutch 26 is equipped with a feeding roll B to prevent the cover tube 24 from reversing. A power transmission device in a granular material feeding device that is integrally attached to the side.