JPH0110965Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a cover for closing an opening for attaching a ridge erector of a rotary tiller that is attached to an agricultural tractor, tiller, etc.

(B) Prior art It is temporary to perform ridge-raising work by attaching a ridge-erecting device to a rotary tillage device, and most of the work is usually tilling and crushing soil, so the ridge-erecting device attachment port is used in this case. must be closed to prevent soil from scattering backwards.

In order to close this ridge erector installation opening, it is known that a closing cover is applied from below and fixed with bolts, or the upper end is clamped and the lower end is locked and fixed. . For example, Jikko 57-
Publication No. 42241, etc.

(c) Problems that the invention aims to solve However, it is not possible to lift the rear cover, insert the mounting port cover on the bottom surface, match the nuts welded to the mounting port cover with the holes in the rear cover, and screw in the bolts from above. It is a demanding job, and especially physical strength is required to lift the mounting cover from below and screw in the bolts while it is in close contact with the rear cover. In addition, if the upper end of the mounting port cover was only held and clamped, there was a risk that soil would fly away due to earth pressure from below.

(d) Means for solving the problem In view of the above points, the present invention is constructed as follows.

In a configuration in which a substantially triangular ridge erector attachment port 3c is provided at the center of the lower part of the rear cover 3, and an attachment port cover 2 is detachably attached to the ridge erector attachment port 3c, a folding line of the rear cover 3 is provided at the front part of the ridge erector cover 2. 3g is provided, and the front tip attachment piece 1 can be fitted across the front part of the ridge erector attachment opening 3c, and the rear end of the attachment opening cover 2 and the rear cover 3 can be fitted together.
The rear end is engaged with engagement edges 18L and 18R.

(e) Embodiment The purpose of the present invention is as described above, and the detailed structure of the present invention will be explained based on the structure of the embodiment shown in the attached drawings.

Fig. 1 is a plan view of the rotary tiller, Fig. 2 is a side view, Fig. 3 is a plan view of the attachment port cover, Fig. 4 is an enlarged side view, and Fig. 5 is a plan view of the front attachment piece of the tip. FIG. 6 is a side view as well.

This figure shows an embodiment of a directly mounted rotary tiller in which rotating arms 9L and 9R are pivotally supported by pins on support arms that protrude rearward from a rear axle case of an agricultural tractor. Since a universal joint is disposed between the rotating arms 9L and 9R, a joint cover 11 is provided, and a rotary gearbox is disposed below the joint cover 11.

Main beams 10L and 10R project from the rotary gearbox to the left and right, and a chain case 13 is fixed to the tip of 10L, and a side frame 14 is fixed to the tip of 10R. A tilling cover 6, a tilling claw shaft, etc. are interposed between the chain case 13 and the side frame 14, and a side cover 23 is installed on the side.
a is arranged, and an extension side cover 23 is provided at the rear of the extension side cover 23.
b is extended.

The rear cover 3, which is the essential part of the present invention, is pivotally supported by a pivot 6a at the rear end of the tilling cover 6, and is movable up and down. In order to suppress the vertical movement of the rear cover 3 from above and increase the leveling effect, hanger rods 8L and 8R are protruded upward from the triangular rib 3a of the rear cover 3, and the hanger rods 8L and 8R are interposed with springs to reduce the depth. It is supported by frames 16L and 16R.

The front end of the depth frame 16 is the main beam 10
The depth arm 7 is vertically adjusted by rotating a depth control handle 12 which is pivotally supported by pivot pins 24L and 24R of pivot bodies 21L and 21R that protrude rearward from the mast 15 and is threaded onto the mast 15. Depth arm 7 is depth frame 16
It is fixed to a reinforcing bar 16a supported between L and 16R. Fixed cylinder 7 at the tip of depth arm 7
The support rods of the ridge erector are inserted into a and 7a and adjusted up and down. Depth wheels 5L and 5R are supported via a depth frame horizontal rod 17 and a depth frame vertical rod 24.

A ridge erector attachment opening 3c is opened in the center of the rear cover 3 and has an isosceles triangular shape that matches the planar shape of the ridge erector. Place the mounting port cover 2, which has a slightly large area, on the ridge erector mounting port 3c from below, and then tighten the bolts 19a, 19b, 19c, 19d, 20a, 20
Tighten and fix at b.

The mounting port cover 2 is provided with the same curved ribs 2f and triangular ribs 2e as those provided on the rear cover 3, so that the mounting port cover 2 is not conspicuous with respect to the rear cover 3. This improves the decorative appearance.

The rear part of the mounting port cover 2 has a curved surface that follows the shape of the rear cover 3, and the rearmost end engages with the reinforced edge of the rear end of the rear cover 3 to prevent the cover from drooping and to create a gap. Engagement edges 18L and 18R are provided to prevent this from happening.

Welding nuts are welded and fixed to the lower surfaces of the holes 2a, 2b, 2c, and 2d of the attachment port cover 2.

Further, no nuts are welded to the holes 1d and 1e of the front mounting piece 1, but welding nuts are welded to the corresponding holes of the rear cover.

The tip of the attachment port cover 2 and the tip front attachment piece 1 form a double structure as shown in FIG. 4, and the rear cover is sandwiched between them.

The front attachment piece 1 is bent at two places as shown in FIGS. 5 and 6.

The folding line 1b is along the folding line 3g of the rear cover, and the folding line 1c is linearly bent along the overlapping stepped portion of the rear cover 3 and the attachment port cover 2. By providing this folding line 1c, when the cover 2 is pushed in, it will stop at this line and the bolt holes will easily align.

(f) Effects of the invention Since the invention is constructed as described above, the following effects can be obtained.

Firstly, since we have provided a pointed front mounting piece along the folding line of the rear cover on the front part of the mounting port cover, the mounting port cover and the pointed front mounting piece can form a double structure, allowing you to push the It can be temporarily fixed. Furthermore, since the attachment port cover and the rear cover are placed along the folded line, the space between them is tightly covered and the tilled soil does not leak.

Second, the front attachment piece of the tip can be fitted across the front of the ridge erector attachment opening, so the earth pressure from below presses the attachment opening cover, causing soil to scatter upward. In addition, there is no need to support the cover from below when installing the mounting port cover, and the bolt holes and nut positions can be matched by simply pushing the mounting port cover into the contact area, making installation easy. It's easy to do.

Third, since the rear end of the mounting port cover and the rear end of the rear cover were engaged at the engaging edges, it was possible to prevent the rear end of the mounting port cover from vibrating, and also prevent the end from bending due to impact. It is.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the rotary tiller, Fig. 2 is a side view, Fig. 3 is a plan view of the attachment port cover, Fig. 4 is an enlarged side view, and Fig. 5 is a plan view of the front attachment piece of the tip. FIG. 6 is a side view as well. 1... Tip front mounting piece, 2... Mounting port cover,
3... Rear cover, 3c... Furrow erector installation port.

Claims (1)

[Scope of utility model registration request] In a configuration in which a substantially triangular ridge erector attachment port 3c is provided at the center of the lower part of the rear cover 3, and an attachment port cover 2 is provided in the ridge erector attachment port 3c in a detachable manner, a folding line of the rear cover 3 is provided at the front part of the attachment port cover 2. 3g is provided, and the front tip attachment piece 1 can be fitted across the front part of the ridge erector attachment opening 3c, and the rear end of the attachment opening cover 2 and the rear cover 3 can be fitted together.
A ridge erector attachment port cover for a rotary tillage device, characterized in that its rear end is engaged with engagement edges 18L and 18R.