JPS6322838Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a grain culm conveying device for a combine harvester, etc., and more specifically, a locking claw that can be erected and protruded by swinging outward through an opening formed in the side surface of the case. A stem culm conveying device that is equipped with a chain rail that suspends a pivotally mounted rotating chain and that controls the swinging of the rotating chain in the direction in which the locking claw protrudes by slidingly contacting the side surface of the rotating chain. Regarding.

In such a stem culm conveying device, from an economic point of view to prevent wear of members, the chain rail is generally made of a material that wears more easily than the rotary chain, and the rotary chain is generally worn and deteriorated due to sliding between the two. Measures will be taken to suppress this. However, in the conventional chain rail, a chain rail with a single chain sliding contact area was used, and each time the chain sliding contact area wore out, the chain rail had to be replaced with a new one. However, the replacement cycle of the chain rail is short, and the number of rails consumed is large.Although the life of the rotating chain can be extended, it has the disadvantage that it is not possible to achieve sufficient economy.

In view of this, an object of the present invention is to extend the replacement cycle of one chain rail with a structure that does not adversely affect the stem culm conveyance function.

In the stem culm conveying device according to the present invention, the chain rail has at least two chain sliding contact portions in the direction of the pivot shafts of the locking claws, and , with one sliding contact portion selectively positioned in a sliding contact posture with respect to the rotary chain, in the other sliding contact portion, position this chain rail in the axial direction of the locking pawl pivot shaft; It is characterized by being configured so that it can be selectively attached to the inner surface of the case.

In other words, by providing two or more sliding parts on a chain rail, each sliding part is made of a material that wears more easily than the rotating chain, yet the service life of a single chain rail can be reduced compared to the rotating chain. In particular, it is possible to extend the lifespan to almost the same extent as the life of the locking pawl, but in particular, by arranging two or more sliding parts on the chain rail in parallel in the direction of the locking pawl pivot shaft, the locking pawl protrusion opening can be opened. The structure is compact and can be stored in the case between the formed side surface of the case and the rotation chain, and the chain rail can be attached to the inner surface of the case located in the direction of the locking pawl pivot axis. Since the chain rail, including the mounting structure, is configured so as not to protrude into the side surface of the case where the opening for protruding the locking pawl is formed, it is possible to avoid increasing the size of the chain case, and furthermore, the above-mentioned opening By maintaining the side surface of the forming case as a smooth surface, the life of the chain rail can be extended in a state where the desired stem culm conveying action can be carried out smoothly, thereby making the intended conveying function economical as a whole. With the means, I was able to maintain it.

Hereinafter, an embodiment of the present invention will be described based on the drawings. As shown in FIG. An ear locking and conveying device 6 in a combine harvester that transports grain culms that have been raised in a posture and then cut by a clipper type reaping device 3 to a rear threshing device 5 mounted on a crawler traveling device 4 in a state changed to a sideways posture. This is shown in Figures 2 and 3.
As shown in the figure, the feed chain 5 of the threshing device 5 is inserted into the case 7 from the position immediately after the pulling device 2.
A rotary chain 8 having a dogleg-shaped rotary movement path in a plan view facing rearward while facing the starting end of A and gradually moving away from the feed chain 5A is hung on this rotary chain 8. A plurality of locking pawls 9 that can be switched between an upright position in which the case 7 can be protruded to the outside and a laid down position in which the case 7 is retracted by swinging around an axis perpendicular to the rotation plane thereof.
... are pivotally mounted at appropriate intervals in the chain rotation direction, and the locking pawls 9 ... can protrude outward from the side surface of the case 7 facing the doglegged rotation movement path. a pawl-erecting guide rail 11 for maintaining the locking pawls 9 in an upright position by slidingly contacting the base end portions of the locking pawls 9; A chain rail 12 made of a material that wears more easily than the chain 8 and slidingly contacts the side surface of the rotary chain 8 to restrict swinging of the rotary chain 8 in the direction in which the locking claw protrudes.
A guide rail G is provided in each straight line portion of the dogleg-shaped rotation movement path and prevents the tip of the grain culm from separating from the locking claws 9 during locking and conveyance. has been done.

The chain rail 12 has two chain sliding contact portions 1 in the axis direction of the pivot shafts of the locking claws 9.
3, 13', and in a state where one sliding contacting part 13 is selectively positioned in a sliding contacting posture with respect to the rotating chain 8, the other sliding contacting part 13' is connected to the chain rail 12. A bolt 14 is attached to the inner surface of the case 7 located in the axial direction of the locking pawl pivot shaft.
The connecting portion 13a of the sliding contact portions 13, 13' is configured so as to be in contact with the inner surface of the opening-formed side surface of the case 7 in the attached state. .

According to the above configuration, when the sliding contact portion 13 on the side that slidingly contacts the rotary chain 8 wears out to the limit of use, the front and back posture of the chain rail 12 is changed, and the mounting on the inner surface of the case 7, which has been done until now, is performed. The life of the chain rail 12 can be shortened by 2 times by bringing the other sliding contact portion 13', which had been in the posture, to the sliding posture, and by placing the worn sliding portion 13 in the mounting posture. It can be doubled, and
Even when both the sliding contact portions 13 and 13' are positioned in the sliding contact posture, the chain rail 12 is completely installed inside the case 7, and the mounting bolts and nuts 14 are not attached to the case 7. At the bottom,
Since it is recessed from the side surface where the opening is formed, it is possible to avoid transportation troubles such as when the transported grain culm is caught on the chain rail 12, bolts/nuts 14, etc.

The chain rail 12 may be Z-shaped, as shown in FIG. 4, having two sliding contact sections 13, 13', or may have four sliding contact sections, as shown in FIG. It may be an E-shape having 13....

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the stem culm conveying device according to the present invention, in which FIG. 1 is a side view of the main part of a combine, FIG. 2 is an enlarged plan view of the main part, and FIG. 3 is a diagram of FIG.
4 and 5 are enlarged longitudinal sectional views of essential parts showing other embodiments, respectively. 7... Case, 8... Endless chain, 9... Locking claw, 10... Hole, 12... Chain rail,
13, 13'...Sliding contact portion.

Claims (1)

[Claims for Utility Model Registration] An opening 1 formed in the side part of the case 7.
The locking claws 9, which can be erected and protruded outward by swinging through 0, hang the pivotally mounted rotating chain 8, and by slidingly contacting the side surface of the rotating chain 8, the locking pawl 9... In a stem culm conveying device that is provided with a chain rail 12 that restricts the swinging of the locking claws 9 in the protruding direction, the chain rail 12 is slidably connected to at least two chains in the direction of the pivot shafts of the locking claws 9. Action part 1
3, 13', and in a state where one of the sliding contact working parts 13 is selectively positioned in the sliding contact action posture with respect to the rotation chain 8, the other sliding contact working part 13' The chain rail 12 is configured to be selectively attachable to the inner surface of the case 7 located in the direction of the locking claws 9 and the pivot shafts. The stem culm conveying device according to claim 1, wherein the chain rail 12 is configured in a U-shape or a substantially U-shape. The chain rail 12 has a sliding contact portion 1
The stem culm conveying device according to claim 1 or 2, wherein the connecting portion 13a of the case 7 is in contact with the inner surface of the side surface of the case 7 where the opening is formed.