JPS5812590Y2 - Grain culm conveyance mechanism of threshing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a threshing mechanism of a threshing machine installed in a combine harvester.

As mentioned above, a threshing machine that threshes the husks harvested by a reaping device while holding and conveying the husks by means of a clamping rod and a clamping chain installed on the clamping rod is generally used. has been done.

The threshing mechanism of this threshing machine swings the front end of the clipper chain, which protrudes from the front end of the chain guide that supports the clipper rod and the inner surface of the clipper chain, up and down in response to the vertical height adjustment of the reaping device. However, there has been no suitable means for preventing the front end of the sandwich chain from sagging.

The present invention was made in view of the above-mentioned circumstances, and in the culm conveyance mechanism of a threshing machine as described above, a sag prevention plate made of an elastic material whose base end is fixed to a chain rail is attached to the bottom surface of the rail. By projecting forward from the front end almost flatly and allowing the sag prevention plate to support the lower inner surface of the front end of the nip chain, the front end of the nip chain is prevented from sagging, and the culm is smooth. The purpose of this is to enable the conveyance of sandwiched plates.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes the body of a combine harvester. A reaping device 2 is provided in front of this device 1, and a threshing machine 3 is provided on the device 1 behind this device 2.

The reaping device 2 causes upright husk culms when the combine moves forward, cuts them with a cutting blade, transfers them to an automatic feeding mechanism 4, and feeds the husk culms to a culm conveying mechanism 5, which will be described later, of the threshing machine 3. , and is a conventionally known device whose height can be adjusted vertically with respect to the fuselage 1.

The threshing machine 3 performs threshing while holding the base of the grain culm and transporting it from the front to the rear of the machine body 1 using a culm transport mechanism 5, and is the same as the conventional one except for the culm transport mechanism 5. It is.

As shown in FIGS. 1 to 3, in the shell culm conveyance mechanism 5, a clamping rod 6 is supported by a clamping rod support 8h via a clamping spring 7, and this support 8 is fixed to the fuselage 1. A sandwich plate chain 9 is disposed on the sandwich plate rod 6.

The sandwich chain 9 is supported by a rear part meshing with a driving sprocket (not shown), and a front end 9a projects forward from the front end of the sandwich rod 6 and a chain rail 10, which will be described later.

The chain rail 10 has a box-like shape and is fixed to the machine body 1 to support the inner surface of the sandwich chain 9.

A bracket h is provided on the front end side of the chain rail 10.
11 is fixed to the bracket 11, the base end of an arm 12 is pivotally attached to the bracket 11 by a mounting shaft 13 so as to be freely rotatable in the vertical direction, and the tip end of the arm 12 is rotatably rotatable in the vertical direction to the connecting shaft 14. It is pivoted.

An intermediate portion of a connecting plate 15 is fixed to the connecting shaft 14, and a sprocket 17 is attached to the lower end of the connecting plate 15 via a support shaft 16.
is rotatably supported, and the front end of the sandwich chain 9 is meshed with and supported by the sprocket 17.

A hook bolt 18 is attached to the upper end of the connecting plate 15 so as to be adjustable in the front-rear direction, and a tension spring 19 is installed between the bolt 18 and the bracket 11 with the bracket 11 side facing downward.

Therefore, the sprocket 17 is urged forward via the connecting plate 15 by the tension of the spring 19, applying tension to the sandwich plate chain 9, and the tip of the arm 12 is urged downward by the tension of the spring 19. As a result, the sprocket 17 is urged downward and the front end portion 9a of the sandwiched chain is urged downward.

In addition, a sag prevention member 11 made of an elastic material is attached to the mounting member 20 fixed to the front end portion of the chain rail 10.
A base end 21a of the rail 1 is fixed, and a portion 21b that is bent at a substantially right angle and extends forward from the base end 21a is fixed to the base end 21a of the rail 1.
The rail 10 protrudes forward from the hole 22 formed in the hole 22 so as to be substantially flush with the lower surface of the rail 10, and its front end 21c is curved upward.

In addition, in FIG. 1, 23 is a crawler belt of the combine harvester.

In the above configuration, when the reaping device 2 moves upward and the front end 9a of the sandwich chain 9 is pushed in three directions by the grain culm sent from the automatic feeding mechanism 5, this front end 9
The sprocket 17 that supports the connecting plate 15 and the arm 1
2, the front end 9a of the sandwich chain 9 is pushed up by the culm, which rises against the spring force of the spring 19 and is fed from the automatic feeding mechanism 5 by the downward movement of the reaping device 2. When released, the sprocket 17 is lowered by the spring force of the spring 19.

Therefore, in response to the needle movement of the reaping device 2, the sprocket 17 moves -L, and the front end 9a of the sandwich chain 9 also moves downward by -L, so that the shell from the feeding mechanism 5 of the reaping device 2 is moved downward. The culm can be stably transferred between the sandwich plate chain 9 and the sandwich plate rod 6.

In addition, a slack prevention plate 2 is attached to the inner surface of the front end 9a of the sandwich chain.
By elastically supporting the culm at 1, it is possible to prevent the culm from sagging in the direction of the sandwich chain 9 due to pressure, and to ensure smooth and stable conveyance of the culm regardless of vertical swinging of the front end 9a. As explained above, the present invention is based on 1' of the sandwich chain.
T? The inner surface of the swinging front end is elastically supported by the upper sag prevention plate, and when this prevention plate acts, the lower surface of the chain rail, the sag prevention 1-1-, and the lower surface of the plate are flat and the space between them is Since there are virtually no steps, the shell culm can be smoothly taken over from the automatic feeding mechanism, sandwiched between the sandwich rail and the sandwich rod, and transferred.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing an example of a combine equipped with a grain culm transfer mechanism of the present invention, FIG. 2 is a side view showing the front part of a grain culm transfer mechanism according to an embodiment of the present invention, and FIG. FIG. 3 is a plan view of the same portion in section. 1... Airframe, 2... Reaping device, 3...
... Threshing machine, 4... Fractional feeding mechanism, 5...
...Culm conveyance mechanism, 6...Piece rod, T...
・・・Pinch plate spring, 8...Pinch plate support stand, 9...
...Pinch plate chain, 9a...Tip part of sandwich plate chain, 10...Chain rail, 11...
...Bracket, 12...Arm, 13.
...Mounting shaft, 14...Connection shaft, 15...
...Connecting plate, 16... Support shaft, 17...
...Sprocket, 18...Hook bolt,
19...Spring, 20...Mounting member, 21...Sag prevention IL plate, 21a...
... Proximal end, 21b... Portion extending forward, 2
1c...Front end, 22...Hole, 23.
...Crawler track.

Claims (1)

[Scope of utility model registration request] In a threshing machine that threshes husks while holding and transporting the husks using a clamping rod and a clamping chain installed on the clamping rod, a chain that supports the starting end of the clamping rod and the inner surface of the clamping plate chain. A sag prevention plate made of an elastic material in which a starting end of a sandwiched plate chain projects from the starting end of a rail, the starting end is meshed and supported by a vertically swingable sprocket, and a base end is fixed to the chain rail. protrudes forward from its front end substantially flush with the lower surface of the rail,
A culm conveying mechanism for a threshing machine, characterized in that the inner surface of the lower part of the front end of the sandwich chain is supported by a sagging prevention plate.