JPS6141522Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a rear cover in a tilling device.

As is well known, a rear cover is attached to a tiller, and this cover is generally removably pivoted between the front main cover and the front cover. . In this case, this is fine for normal tilling work, but if, for example, a well-known mulch is attached to the rear of the tiller, it is necessary to remove the rear cover, which is made of a single plate, and in this case it is necessary to remove the bolts on the hinge. In particular, each hinge has a pair of bolts on the front and rear, so for example, if the hinges are arranged in four places, you must remove the eight bolts on the rear cover side. This not only made the work extremely troublesome, but even if the mulch was installed, the rear cover would have all been removed, so there would inevitably be a large gap above the mulch, which could be used for tilling. There is a problem in that the cultivated soil and sand scattered by the mulch covers the vinyl sheet covered with mulch, and there is a need for an improvement measure.

Therefore, when installing an attached work machine such as a multi-purpose machine, by removing only the lower part of the rear cover that is suitable for the work machine, instead of removing the entire rear cover, the trouble of attaching and detaching as described above can be saved, and the work machine A configuration as shown in FIGS. 1 to 3 is conceivable as a configuration in which the upper cover remaining at the time of installation prevents earth and sand from scattering. The following will be explained based on the drawings. What is shown in FIGS. 1 to 3 is an example of a tillage device R that is equipped for traction at the rear of an agricultural tractor. A transmission case 1 is provided on the side, and a tiller claw 2 is provided at the bottom.

3 is a rotary main cover provided to cover the rotation range of the claw 2 from above, and 4 is a side cover that covers both sides, and there are 2 holes at each of the four tail ends of the main cover 3. Front hinge pieces 6 are arranged in a row with individual bolts 5.

On the other hand, the rear cover 7 has a pair of left and right rear hinge pieces 8, 8 protruding from the upper end of its front portion at four locations, each of which can be attached and detached freely via bolts 5, and is attached to the front hinge piece 6. are connected via a hinge shaft 9, forming a hinge 10 here.

This rear cover 7 is divided into an upper cover 7a and a lower cover 7b, and the lower end 4 of the upper cover 7a
An insertion receiving box 12 having a downwardly opening insertion opening 11 is welded and fixed at the location, while a short insertion tongue piece 13 that can be inserted into each box 12 is attached to the upper edge of the lower cover 7b. protruding, and in this way both 1
2 and 13 can be fixed with wing bolts 14 for each one.

Therefore, with the above configuration, when installing the multi-M, for example, by simply removing the four butterfly bolts 14, only the lower cover 7b can be removed while leaving the upper cover 7a intact. Of course, the lower cover 7b can be done without tools.
Since the chisel is removed, the work can be done easily and accurately, and the hinge shaft 9
There is no need for complicated processes such as removing the

When the multi-purpose M is attached with only the upper cover 7a left in this way, this multi-purpose M will fit into the upper and lower space formed by removing the lower cover 7b, and therefore the upper cover 7a will be placed on the multi-M without any gaps. Since the plowed soil is placed on top of the mulch M, the tilled soil does not escape from this gap and does not cover the vinyl sheet covered with the mulch M, thereby preventing any inconvenience during subsequent work.

However, in the above structure, the lower edge 1 of the upper cover 7a, which serves as the mutual connection part 17,
7a and the end surface of the upper edge 17b of the lower cover 7b are simply butted together and the insertion tongue piece 13 is connected to the insertion receiving box 12, so there is a risk that the lower cover 7b may inadvertently shake. The disadvantage is that it lacks installation stability.

Therefore, in view of the above problems, the present invention reduces the trouble of attaching and detaching when installing an attached work machine such as a multi-purpose machine by removing only a part of the lower part of the rear cover that is suitable for the work machine, instead of removing the entire rear cover. The upper cover, which is omitted and remains when the work equipment is attached, reliably prevents the scattering of earth and sand, and also strengthens the mounting condition to improve installation stability. A rear cover is provided via a hinge at the tail end of a main cover provided to cover the rotating area of the claw from above, and the rear cover itself is composed of an upper cover and a lower cover that are detachably connected to each other. A recess is integrally formed on the edge of either the upper cover or the lower cover, and an insertion box with a flat plate attached to both sides of the recess is formed, and the edge of the other cover has the above-mentioned recess. An insertion tongue that is removably inserted into the box and a stable piece that is curved on both sides of the tongue and attached in an overlapping manner to both sides of the box are integrally formed, and the insertion tongue is inserted into the box. A fastening bolt is provided to prevent the inserted tongue piece from coming off.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The connecting portion 17 in FIGS. 1 to 3 is replaced with the connecting portion 17 shown in FIG. 4, and the lower edge 17a of the upper cover 7a is A plurality of recesses are integrally formed at predetermined intervals along the recesses, and a flat plate 15 is attached by welding or the like to both side edges of each recess, and a plurality of insertion receiving boxes 12 are formed here. On the other hand, the upper edge 17b of the lower cover 7b has an insertion tongue 13 that can be removably inserted into each of the insertion boxes 12, and both sides of the insertion tongue 13 are bent in an upright shape. Lower edges 17 on both sides of the box
A stabilizing piece 16 which is attached in an overlapping manner to a is integrally formed. Incidentally, the insertion receiving box 12 and the insertion tongue piece 13 are configured to have a wide width. Then, the insertion tongue piece 13 is inserted into the insertion box 12, and the stabilizing pieces 16 are attached to the lower edges 17a of the upper cover 7a on both sides of the insertion box 12 in an overlapping manner.
A butterfly bolt 14 (fastening bolt) is inserted through the insertion receiving box 12 and the insertion tongue piece 13, and is fastened, thereby preventing the insertion tongue piece 13 from coming off.

Since the embodiment of the present invention is constructed as described above, as described above, only the lower cover 7b can be easily removed by simply removing a small number of wing bolts 14, and if the wing bolts 14 are used, no tools are required. Moreover, since only the lower cover 7b is removed, the work can be carried out easily and accurately, and there is no need for complicated processes such as removing the hinge shaft 9. The lower cover 7b thus removed can be stored, for example, by being stacked on top of the upper cover 7a via the butterfly bolts 14. When the mulch M is attached, the upper cover 7a is placed on the mulch M without any gaps, so the tilled soil does not escape from this gap, and the soil does not cover the vinyl sheet covered with the mulch M. This has the advantage of not causing any inconvenience to subsequent work. Further, when the lower cover 7b is attached to the upper cover 7a, the insertion tongue piece 13 of the lower cover 7b is inserted into the insertion box 12 and is held in place by the butterfly bolt 14, 12 lower edges 17a on both sides and insertion tongue pieces 13 stabilizing pieces 16 on both sides
and are in an interlocking state where they are attached in a polymeric manner,
A strong mounting condition with no looseness can be obtained, and the mounting stability can be improved. It also has a simple configuration,
Can be provided at low cost.

Note that although the butterfly bolt 14 is shown as the fastening bolt, it is also possible to use a normal hexagonal bolt.

As described above, the present invention has a structure in which the rear cover is divided into an upper cover and a lower cover, and both covers are detachably connected to each other by a plug-in connecting part, so that there are no fastening bolts for attachment. Only a small number of bolts are required, which eliminates the trouble of removing a large number of conventional hinge bolts.Furthermore, since it is a plug-in type, it has the advantage of being extremely quick and easy to remove and install. Furthermore, as mentioned above, when using a mulching device, the upper cover prevents tilled soil from escaping, and the mulching work can be done neatly. In addition, the insertion tongue is inserted into the insertion receiving box and held in place, and the edges on both sides of the insertion receiving box and the stabilizing pieces on both sides of the insertion tongue are attached in an overlapping manner. Since it is in a flat state, a strong mounting state without rattling can be obtained, and the mounting stability can be improved. It also has the advantage of having a simple configuration and being able to be provided at low cost.

[Brief explanation of the drawing]

Figure 1 is a side view of a tilling device showing a comparative example;
The figures are a sectional view taken along the line -- in FIG. 3, FIG. 3 is a view taken along the Y arrow in FIG. 2, and FIG. 4 is an exploded perspective view showing an embodiment of the present invention. 3... Main cover, 7... Rear cover, 7a...
Upper cover, 7b... Lower cover, 10... Hinge, 12... Insertion box, 13... Insertion tongue piece, 14... Butterfly bolt, 15... Flat plate, 16...
Stable piece, 17...Connection part.

Claims (1)

[Scope of utility model registration request] A rear cover structure for a tilling device, characterized in that a rear cover is attached via a hinge to the tail end of a main cover provided to cover the rotation area of the tilling tines from above, the rear cover itself consisting of an upper cover and a lower cover which are detachably connected to each other, a recess is integrally formed on the edge of one of the upper or lower covers and an insertion receiving box is formed with a flat plate attached across both side edges of the recess, an insertion tongue which can be inserted removably into the box and a stabilizing piece which is bent on both sides of the tongue and attached overlappingly to both sides of the box are integrally formed on the edge of the other cover, and a fastening bolt is provided to hold the insertion tongue inserted into the box in place.