JPS598487Y2 - Claw bracket wear prevention device for rotary claw shaft - Google Patents

Description

[Detailed description of the invention] This invention prevents the claw bracket installed in the area where the loader claw shaft approaches the tilling transmission case and the tilling claw mounting bolt attached to this from being worn out and damaged due to compressed adhesion of soil, etc. The present invention relates to a claw bracket wear prevention device.

In a rotary tillage device, a claw shaft cylinder is fitted to the tilling transmission shaft supported at the bottom of the tillage case, and the tilling claws are attached to claw brackets arranged appropriately around the outer circumference of this claw shaft cylinder. In the area of the tube that approaches the tilling case, the soil that is scattered during tilling during rotation, or the grass, straw, etc. scattered in the field, tends to swell and become compressed, so the tube should be installed particularly close to this area. The claw bracket installed thereon contacts and rotates against the attached compressed material, and is likely to be worn out and damaged, causing it to lose its function at an early stage.

The device of the present invention was developed to eliminate these drawbacks, and compared to conventional devices, it is possible to reliably prevent wear and tear on the claw brackets, etc., without complicating the structure. In addition, the present invention provides a wear prevention device for the claw bracket that is useful for preventing soil from adhering to the rotary claw shaft cylinder and the tilling case from being wrapped around the rotary claw barrel and the tillage case. .

This will be explained below using a specific example shown in the drawings. The one shown in FIG. 1 is a center drive type rotary in which the rotary claw shaft cylinders are provided on both sides of the tilling case. This is a rotary device for tilling residual tillage that is comparable to a tillage transmission shaft, in which 1 is a tillage case, 2 is a tillage transmission shaft rotatably supported at the bottom of this tillage case, and 3 is fixed to case 1. holder,
Reference numeral 4 denotes an inclined claw shaft cylinder which is rotatably held in a holder, 5 indicates a bending transmission mechanism that interlocks and connects the inclined claw shaft cylinder 4 and the tilling transmission shaft 2, and 6 fits the horizontal claw shaft cylinder of the transmission shaft 2. mounting part,
7 is a claw bracket arranged and welded to the outer periphery of the inclined claw shaft cylinder; 8
shows the tilling transmission mechanism housed in the tilling case.

The present invention is a tillage rotary with built-in inclined shaft cylinder,
Alternatively, in a tilling rotary that does not have a normal tilt or oblique shaft cylinder, a labyrinth mechanism is created by overlapping the inner end of the rotary claw shaft cylinder 4 with the inner circumference of the outer peripheral protruding edge 9 of the holder 3 of the tilling case 1. The claw bracket 7 is attached closest to the tilling case 1 side of the second claw shaft cylinder 4, and the U-shaped members 7b and 7C are welded together to form a sheath shape. The U-shaped member 7b located at the front edge in the rotating direction of the claw shaft cylinder 7 is extended toward the protruding edge (of the fixed member), and a notch is formed at a portion of the extension 10 near the outer periphery of the fixed member. An edge portion 11 is provided so that the edge portion 11 rotates close to the outer periphery of the fixing member 9.

In addition, 12 is a tilling claw whose mounting base is inserted into the bracket and fixed with a fixture.

Therefore, when the power is transmitted by the transmission mechanism 8, the tillage transmission shaft 2
rotates, and at the same time, the horizontal claw shaft barrel fitted thereon rotates, and at the same time, the inclined claw shaft barrel 4 is also rotated by the bending transmission mechanism 5, and the tilling claws 12 attached to these are rotated in a predetermined driving order. It is driven into the soil to till the soil, and during this operation, soil tends to adhere to the tilling case side (case or fixed member) because it does not rotate, and this gradually forms a pile. However, as the number of attachments increases, external pressure is likely to be applied to the overlapping rotating portion of the inner end of the rotary claw shaft cylinder with the fixed member side, the claw bracket, and the claw fixing device. The soil or grass straw, etc. that is exposed is removed by the extension part 10 of the rotating front edge of the claw bracket and the edge part 1.
1 prevents the attachment from expanding, and in particular, since the side surface of the claw bracket facing the case side is covered by the protrusion and rotated, it is not damaged, and the inner end of the rotary claw shaft cylinder and The overlapping part with the fixed member is forcibly scraped off by the edge part 11, which rotates close to the outer periphery, so that there is no damage to this part.
It also prevents problems from occurring.

Since the present invention is structured and operates as described above, it includes a claw bracket installed closest to the tilling case side, an overlapping rotating portion between the rotary claw shaft cylinder and the tilling case side, and a claw bracket installed closest to the tilling case side. can be protected from external pressure caused by attached soil and entangled grass straw, ensuring prevention of wear and tear.
The device can be made to withstand use for an extremely long period of time.

Moreover, the structure to achieve this effect is simply a part of the claw bracket structural member integrally extended, so the mechanism is significantly simpler and cheaper than conventional ones. It can be provided as a product.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a partial cross-sectional front view of the main part when the present invention is incorporated into a rotary claw shaft for residual tillage processing using an inclined claw shaft cylinder, and Fig. 2 is a front view in partial section of the main part. FIG. 2 is a side view of the claw bracket section seen from the direction of the arrow in FIG. 1; Code 1...Tilling case, 4...Rotary claw shaft cylinder, 7...Claw bracket, 7 b
, 7 C... Bracket structure member, 9...
...Fixing member, 10...Extension part, 11...
...Notch edge.

Claims (1)

[Scope of utility model registration request] The case side end of the rotary claw shaft, which is rotatably installed in the tilling case, is attached to the inner periphery of the fixed member extending from the case in an overlapping state. and attach the claw bracket.
The U-shaped member is welded together, and the U-shaped member located at the front edge of the bracket in the direction of rotation of the claw axis is extended toward the fixed member, and the portion of the extended portion that approaches the fixed member is A structure of a pawl bracket abrasion prevention device for a rotary pawl shaft, which is provided with a notched edge portion, and is configured such that the edge portion rotates close to the outer periphery of a fixing member.