JPS5912006Y2 - Tillage extension cover attachment device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for attaching a tilling extension cover, and more specifically, a device for firmly and easily attaching a tilling extension cover to the side transmission case of a side drive type tiller. Regarding.

In order to widen the tilling width or to perform edge tilling, an extension tilling member is attached to the side of the tilling device, but normally this extension tiller member is attached to a so-called side frame on the opposite side of the side transmission case. or provided in the side transmission case.

When the extension tilling member is attached to the side transmission case, it is difficult to easily and reliably support the extension tilling force bar based on the shape of the transmission case, and the form of support thereof is also relatively poor.

The inventors of the present invention have conducted intensive research on how to support a tilling extension cover for a side transmission case of a side drive type tillage device, and have developed a side drive type tillage device in which the side transmission case is connected to an inner fixed base plate, a transmission case force bar fastened to the outside of the base plate; one extension cover mounting bracket is shaped to cross the longitudinal direction of the transmission case and follow the outer shape of the transmission case force bar; Both ends of the force bar mounting bracket are fastened to the tilling cover supported inside the board, and are also fastened to the board together with the power bar of the transmission case, and the extension cover is supported on this mounting bracket in a detachable manner. As a result, he succeeded in developing a tillage extension cover attachment device having certain features.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In Figs. 1 to 5, reference numeral 1 denotes a side-drive type cultivating device, which is attached to a tractor (not shown) by a connecting device 2 shown as a three-point link so that it can be raised and lowered.

Reference numeral 3 denotes a central transmission case, which has a power receiving shaft at the front thereof, and torque from the tractor PTO shaft is transmitted to this receiving shaft via a universal joint shaft 4.

Reference numeral 5 denotes a pair of left and right arms, which extend outward from both side walls of the transmission case 3. A base plate 6 is flanged to the outer end of the arm body 5, and the base plate 6 faces downward. They extend and correspond to each other.

Reference numeral 7 denotes a side transmission case, and in the embodiment of the board 6, a power bar 9 of the transmission case is fastened to the left board 6 with a plurality of bolts 8.
Therefore, the cover peripheral flange 9A is substantially fastened with the bolts 8.

Inside the transmission case 7, there is provided a transmission body 10 such as a chain, a belt, etc., or a gear transmission body, which is driven via a transmission shaft 11 shown in FIG.

12 is a tilling claw shaft, both ends of which are rotatably supported by a bearing box 13 attached to the base plate 6, and the tilling claw 1 is mounted on this claw shaft 12.
It has multiple books of 4.

Of course, power is transmitted to the pawl shaft 12 by the transmission body 10.

Reference numeral 15 denotes a tiller front cover, with flanges 15A at both left and right ends thereof.
are supported and fixed on the inner surfaces of the pair of left and right substrates 6, and cover the locus of the claws 14.

The front cover 15 completely traverses the longitudinal direction of the transmission case 7, and its front and rear extending flanges 15B, 15B are provided with bolt holes 16A, 16B.

Reference numeral 17 denotes a rear tiller cover, which is connected to the rear edge of the front cover 15 by a bending fitting 18.

Reference numeral 19 denotes a tilling side cover, which is located at the rear of the transmission case 7 and a board (not shown) corresponding to the case 7, and which is located at the rear of the front cover 1.
It is fastened with bolts on both sides of 5.

Reference numeral 20 denotes an extended tillage device, and the figure shows a so-called cage rotary member in which an arm 22 is provided on a rotating shaft 21 in a radial arrangement, and blades 23 are provided at equal intervals in the circumferential direction at the tip of this arm 22. is inserted into a mounting hole 24 formed in the transmission case 7, and connected to be driven by the transmission body 10.

Note that the rotating shaft 21 is coaxial with the tilling claw shaft 12,
When the rotary shaft 21 is not in use, the mounting hole 24 is covered with a plug.

25 is a tilling extension cover, which is separated from the front cover 26 and the rear force bar 27, and the rear cover 2 is connected to the front cover 26.
7 are connected by a bending fitting 28 and cover the force rotary member.

Reference numeral 29 denotes a cover mounting bracket, which has an overlapping portion 29B with respect to the cover peripheral flange 9A via the front and rear step portions 29A in order to follow the outer surface shape of the transmission case force bar 9. has a stay 29C extending downward.

The mounting bracket 29 is in the shape of a so-called band plate, and extends across the longitudinal direction of the transmission case force bar 9, with overlapping portions 29B on the front and rear abutting against the peripheral flange 9A, and extending flange 1.
5B through a cylindrical elastic collar 30 with bolts 31.

Further, a bolt hole 32 is provided in the stay 29C provided in the overlapping portion 29B, and a bolt hole 108A is used for attaching the flange 9A of the transmission case force bar 9 to the base plate 6 using a bolt 108. The stay 29C and the flange 9A of the cover 9 are fastened together with the base plate 6.

In addition, a horizontal refraction stay 3 is installed on each upper part of the overlapping part 29B.
A cylinder 35 having a fastener 34 is fixed to each stay 33, and the cylinder axis of the cylinder 35 is horizontal and extends in the left-right direction.

The front extension cover 26 corresponds to the cylindrical body 35, and
A removable rod 36 is fixed to the cylindrical body 35 and has a recessed notch 26A on the inner edge along the transmission case 7.

Connect the concave notch 26A of this front extension cover 26 to the transmission case 7.
The rod 36 is inserted into the cylinder 35 and supported by the fastener 34, but at this time, the front extension cover 26 is placed on the top surface of the mounting bracket 29. .

According to the above embodiment of the present invention, the front and rear overlapping portions 29B of the mounting bracket 29 abut flush against the peripheral flange 9A of the power bar 9 of the transmission case, and the extended flange 1 of the tilling front cover 15
5B with a bolt 31 via a cylindrical elastic collar 30, and by this, the mounting bracket 29 crosses the transmission case 7 and supports it, so that both the transmission case 7 and the mounting bracket 29 are secured to each other. It is reinforced by

Furthermore, the mounting bracket 29 is provided with a downward stay 29C in addition to the aforementioned fastening by the pair of front and rear bolts 31.
29C is fastened to the base plate 6 together with the peripheral flange 9A of the power bar 9 of the transmission case with bolts 108, and the mounting bracket 29 is firmly fastened to the transmission case 7 here.

Further, in this case, the bolt 108 is a component for fastening the transmission case force bar 9 to the base plate 6 to construct the transmission case 7, and the mounting bracket 29 is attached here as a separate component, that is, using a bolt. Savings in the number of parts compared to those that are fastened,
This is advantageous in that the structure can be simplified.

Further, since a cylinder 35 is fixed to the front and rear of the mounting bracket 29, and a rod 36 fixed to the extension front cover 26 is inserted into the cylinder 35 and fixed with the fastener 34, the extension cover 2
6 is extremely convenient to attach and detach.

At this time, as mentioned above, the mounting bracket 29 reinforces the structurally relatively weak cover 9 which is made of sheet metal and is usually shaped, and the mounting bracket 29 is abutted along the cover 9. The support of the extension cover 25 mounted using this mounting bracket 29 is not only extremely stable and accurate, but also, as in the embodiment, the inner edge of the base of the extension cover 25 can be attached along the transmission case force bar 9. By abutting and mounting the base so that the lower surface is placed and received on the upper surface of the mounting bracket 29, the extension cover 25 can be mounted more perfectly, and the cover can be easily mounted even when subjected to vibrations or collisions with rocks and stones. The support form of 25 remains intact.

In the embodiment, the cylinder 35 is fixed to the mounting bracket 29, but the cylinder 35 may be fixed to the cover 26, and the rod 36 may be fixed to the mounting bracket 29.

The present invention has been explained in detail above, and in short, the mounting bracket is shaped to cross the longitudinal direction of the transmission case and follow the outer surface shape of the case, and is fastened to the tilling cover at the front and back. Since it is fastened together with the power bar of the transmission case at a different location than the attachment part, the mounting bracket and the transmission case reinforce each other, and this strong mounting bracket supports the extension cover. As a result, the support of the extension cover is simple, accurate, and strong.

[Brief explanation of drawings]

The drawings show an example of the embodiment of the present invention; Fig. 1 is a side view of the entire tilling device, Fig. 2 is a rear view of the main parts of the invention, and Fig. 3 is a rear view of the main part of the tilling device.
4 is a partial perspective view of FIG. 3, and FIG. 5 is a perspective view illustrating an exploded state. 1... Side drive type tilling device, 6... Board, 7
... Side transmission case, 8... Fastening bolt, 9...
Transmission case force bar, 15... Tillage front cover, 29.
...Mounting bracket, 29B...Overlapping part of mounting bracket, 29C
...Mounting stay, 31...Tightening bolt, 25...
Cultivation extension cover, 108... tightening bolt.

Claims (1)

[Scope of utility model registration request] In the side drive type cultivating device, the side transmission case is composed of an inner fixed base plate and a power transmission case force bar fastened to the outside of the base plate, and an extension cover mounting bracket crosses the longitudinal direction of the transmission case, The extension cover mounting bracket has a shape that follows the outer shape of the transmission case force bar, and both ends of the extension cover mounting bracket are fastened to the tilling cover supported inside the board, and are fastened to the board together with the power transmission case power bar. A tillage extension cover mounting device characterized in that the extension cover is detachably supported on the mounting bracket.