JPH0135149Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a grain culm pulling device that is located at the front of a reaping and binding machine (binder) or combine harvester and is configured to raise grain culms to be planted in a field before reaping. More specifically, the purpose is to simplify the structure and reduce the weight of this grain culm lifting device by reducing the number of parts.

Below, we will explain the drawings of an embodiment in which the present invention is applied to a grain culm pulling mechanism in a reaping and binding machine (binder). A transmission case equipped with a reaping binding section 6 consisting of a grain culm pulling mechanism 3, a reaping mechanism 4, a binding mechanism 5, etc., an engine 7 and a control handle 8 at the rear, and a pair of left and right running wheels 9, 9' in the middle part. 10 is shown, and a cover 11 is attached to the middle part thereof.

The engine 7 is attached to the rear end of a cylindrical case 12 extending rearward from the upper rear surface of the transmission case 10, and the upper front surface of the transmission case 10 includes:
The rear end of a pipe-like frame 13 extending diagonally downward is attached to the front end of the frame 13, and the reaping binding section 6 is attached to the front end of the frame 13. (not shown)
The transmission enters the transmission case 10 through the transmission case 10 and drives both traveling wheels 9, 9', while the transmission is transmitted to the reaping binding unit 6 through a shaft (not shown) in the pipe-shaped frame 13 to drive it. is configured to do so.

As shown in FIGS. 4 to 6, the grain culm lifting mechanism 3 has an upper drive sprocket 16 and a lower idler wheel 17 between an upper surface plate 14 and a lower surface plate 15 that are approximately oval in plan. An endless chain 18 is arranged around the endless chain 18.
The chain 18 is provided with a large number of ears 19 projecting outward at regular intervals, and each ear piece 19 is provided with a conveying tine 20 having guide pieces 21, 21 integrally protruding from both the upper and lower surfaces of the base end. The endless chain 18
By rotation of the upper driving sprocket 16, the right side of the chain 18 is driven to move downward from the top as shown by arrow A, and the left side is moved from the bottom upward as shown by arrow B.

The lower idling wheel 17 is provided with cylindrical parts 23, 23 that the inner surfaces of the guide pieces 21, 21 in the transport tank 20 come into contact with, and each transport tine 20 stands up at this point, and the upper drive sprocket It is configured to collapse and rotate at 16 locations.

Further, the upper surface plate 14 and the lower surface plate 15 have longitudinal grooves extending in parallel along the chain 18 from the idler wheel 17 to the drive sprocket 16 on the inner side of the part where the endless chain 18 moves upward from below. The recessed portions 24 and 25 are formed as recesses, and the inner surfaces of both guide pieces 21 of each conveyance tine 20 are brought into contact with the outer surfaces 26 and 27 of both recessed portions 24 and 25, and each conveyance tine 20 is The upper plate 14 and the lower plate 15 are formed in a vertically symmetrical shape with a center line 28 perpendicular to the chain 18 at a central position between the upper and lower ends thereof. It is what it is.

In this configuration, by moving the reaping and tying machine 1 forward while driving the reaping and tying section 6,
Grain culms to be planted in the field are first raised in the erect state by the grain culm lifting mechanism 3 and are harvested by the reaping mechanism 4 while being pulled up by the conveying tines 20 that move upward from below, and then sent to the bundling mechanism 5. Here, after being bundled into an appropriate amount, the base of the stock is tied with a string and then released to the side of the reaping and binding machine 1.

Each conveying tine 20 provided in the endless chain 18 in the grain culm pulling mechanism 3
must be maintained in an upright state during the lifting action of the grain culm. Conventionally, a cross-sectional guide rail constructed separately from the upper plate 14 and the lower plate 15 was provided between the upper plate 14 and the lower plate 15. By fitting the guide piece of the conveyor tine into this guide rail, the conveyor tine is held in an upright position, so providing a separate guide rail increases the number of parts and weight. However, in the present invention, the upper surface plate 14 and the lower surface plate 15 are provided with longitudinal groove-shaped recesses 24 and 25, and the outer surfaces 26 and 27 of the recesses 24 and 25 are connected to the conveyor tine 2.
Since it is configured as a guide for holding the robot upright, the conventional separate guide rail can be omitted, and the number of parts can be reduced and the weight can be reduced.

Moreover, in the present invention, the upper surface plate 14 and the lower surface plate 15 in the grain culm pulling mechanism 3 are vertically symmetrical by sandwiching the center line 28 perpendicular to the chain 18 at the center position between the upper and lower ends.
The upper plate 14 and the lower plate 15 can be press-molded using one press die.

Therefore, according to the present invention, it is possible to reduce the weight of a grain culm pulling device in a reaping and binding machine or a combine harvester, and to provide the grain culm pulling device at a low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of the reaping and tying machine, FIG. 2 is a side view, FIG. 3 is a plan view, FIG. 4 is an enlarged plan view of the grain culm pulling mechanism, and FIG. The figure is a cross-sectional view taken from - in FIG. 4, and FIG. 6 is an enlarged cross-sectional view taken from - in FIG. 4. 3...Grain culm lifting mechanism, 14...Top plate, 15...
...Bottom plate, 18...Endless chain, 20...
Conveyance tine, 21, 21... Guide piece, 24, 2
5...Concave portion, 28...Center line.

Claims (1)

[Scope of utility model registration request] In a grain culm pulling device comprising an endless chain disposed between an upper plate and a lower plate, and a plurality of conveying tines rotatably pivoted in the rotational direction of the chain, the upper plate and the lower plate include: A recess in the form of a longitudinal groove extending parallel to the direction of movement of the chain is provided at the portion where the transport tine moves upright, and the outer surface of the recess is configured as a guide against which the guide piece of the transport tine comes into contact. A grain culm pulling device comprising a face plate and a lower face plate formed vertically symmetrically across a center line perpendicular to the chain at a central position between the upper and lower ends thereof.