JPH0127634Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a noise prevention device for a grain culm pulling body installed in a reaping/harvesting machine such as a combine harvester or a binder.

Grain culm pulling bodies attached to reaping and harvesting machines such as combines and binders generally include a pair of grain culm lifting cases at the front of the machine, and sprocket wheels installed at the upper and lower ends of the inside of the cases. An endless chain with lifting claws pivotably mounted therebetween is suspended, and as the endless chain rotates, the lifting claws stand up in left and right directions from the lifting case toward the lifting path. The lifting claw performs the lifting action while moving upward, and after completing the lifting action, the lifting claw collapses, raises, and returns to the lower movement inside the case.

However, in this type of grain culm pulling body, when the lifting claw on the non-working side falls down after finishing the lifting action, its tip moves downward along the side plate of the lifting case, so rubber is coated on the inner surface of the side plate. However, in the past, rubber was simply glued directly to the side plate, so when the lifting claw hits the side plate, the hammering sound is transmitted to the side plate, causing noise, especially when the endless chain rotates at high speed or when the aircraft is When turning, the lifting pawl, which is pivotally attached to the endless chain so that it can be raised and lowered, swings due to inertia and hits the side plate, creating a large noise.

The present invention was devised in view of the above-mentioned circumstances, and its purpose is to allow the inactive side lifting claw to move downward along the inner surface of the side plate of the lifting case. Noise prevention of the grain culm lifting body that can minimize the noise generated when the lifting claw hits the side plate by utilizing the sound absorption effect of the space provided in the side plate of the lifting case. The aim is to provide the equipment.

The noise prevention device of the grain culm lifting body of the present invention which achieves the above object has a lifting claw built into the grain culm lifting case that stands up outward from the grain culm lifting case on the lifting path. In the grain culm lifting body that moves and moves downward by collapsing inward of the grain culm lifting case on the return path, there is a vertically extending vertical position on the side plate of the grain culm lifting case opposite to the lifting claw on the return path. The device is characterized in that a groove is provided and an elastic plate is attached to the inner surface of the side plate to cover the groove to form a sound absorbing space along the groove.

To explain the structure of the present invention with reference to an embodiment shown in the drawings, 1 is a grain culm pulling body attached to a reaping/harvesting machine such as a combine harvester, and both sides of the grain culm pulling body 1 are A pair of grain culm lifting cases 3 each having a lifting claw 2 installed therein are erected. That is, 4
5 is a driving sprocket pivotally supported on the inner upper end side of the grain culm lifting case 3, and 5 is a vertical sprocket pivotally supported on the lower end side, both sprockets 4,
An endless chain 6 is suspended between the chains 6 and 5, and lifting claws 2 are pivotally attached to the endless chain 6 at predetermined intervals via attachment pins 7 so as to be able to be raised and lowered. Then, the endless chain 6 is rotated by the rotation of the drive sprocket 4.
When the grain culm lifting case 3 is rotated, the lifting pawls 2 inserted in the through hole 8 of the grain culm lifting case 3 and erected in left and right directions move upward to form a lifting path for pulling up the grain culm. After the lifting claw 2 has moved upward to the upper end of the case 3 and finished its lifting action, it swings about the mounting pin 7 and becomes a lodging shape to pull up the grain culm, and moves downward inside the case 3 to pull it up. and returns to the starting side of the action.

Reference numeral 9 denotes a side plate facing the return path along which the lifting pawl 2 moves downward, and the side plate 9 is bent to project outward and has a vertical direction facing the lifting pawl 2 on the return path on its inner surface. A groove 10 is formed. 11 is the side plate 9
A rubber member is bonded and fixed to the inner surface of the groove 10 to cover the groove 10, and the rubber rubber 11 and the groove 1 are bonded to each other.
A space 12 is formed by 0. Reference numeral 13 denotes a buffer rubber that comes into contact with the raised lifting claw 2 when it falls down, 14 is a chain tensioner that adjusts the tension of the endless chain 6, and 15 is a guide plate for the raised lifting claw 2.

In the above configuration, when reaping the grain culm with the reaping harvester, the reaping work can be smoothly performed while pulling up the grain culm by the upward movement of the raising claws 2 that stand up in opposite directions. can. When the non-operating side lifting claw 2 that has completed its lifting action and is laid down moves downward along the inner surface of the side plate 9, even if it hits the side plate 9 and makes a knocking sound, the rubber 11 is attached to the inner surface of the side plate 9. are fixed with adhesive, and since a space 12 is formed between the rubber rubber 11 and the side plate 9 by a vertical groove 10 facing the pulling claw 2 of the return path, the hitting sound can be directly transmitted. The sound is not transmitted to the side plate 9, and the sound can be absorbed by the sound absorption effect of the space 12, and when the endless chain rotates at high speed or the aircraft turns, the lifting claw 2 swings and the sound is transmitted to the side plate 9. Even if it hits you, it won't make a lot of noise. Also groove 1
0 can reinforce the side plate 9.

In short, in the present invention, the lifting claw built into the grain culm lifting case stands up outward from the grain culm lifting case on the lifting path and moves up, and on the return path, the lifting claw built in the grain culm lifting case moves up. In the grain culm lifting body that collapses inward and moves downward, a vertical groove is provided on the side plate of the grain culm lifting case opposite to the lifting claw of the return path, and a recess is provided on the inner surface of the side plate. Since an elastic plate covering the groove is attached to form a sound-absorbing space along the concave groove, the lifting claw on the non-acting side collapses to raise the grain culm, and the grain culm lifter moves down the return path inside the case. Even if the lifting pawl that moves downward along the side plate hits the side plate and makes a banging sound, the recessed groove provided in the side plate opposite the lifting pawl on the return path and the inner surface of the side plate will prevent the problem. Since the sound-absorbing space formed by the elastic plates can absorb hitting sounds, the hitting sounds are not directly transmitted to the side plates, and the generation of noise can be minimized. In addition, the grooves formed in the side plates can also be used to reinforce the side plates, providing extremely useful practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the noise prevention device for a grain culm pulling body according to the present invention, and FIG. 1 is a front view of the grain culm pulling body, and FIG. 2 is a sectional view of the main part. . In the figure, 1 is a grain culm lifting body, 2 is a lifting claw, 3 is a grain culm lifting case, 10 is a side plate, 11 is a groove, 1
2 is an elastic plate, and 13 is a sound absorbing space.

Claims (1)

[Scope of utility model registration request] The lifting pawl built into the grain culm lifting case stands up outward from the grain culm lifting case on the lifting path and moves upward, and on the return path it collapses inward to the grain culm lifting case and lowers. In the grain culm pulling body that moves, a vertical groove is provided on the side plate of the grain culm lifting case opposite to the lifting claw of the return path, and an elastic plate is provided on the inner surface of the side plate to cover the groove. A noise prevention device for a grain culm raising body, characterized in that it is installed to form a sound absorbing space along a groove.