JPS5912005Y2 - Installation structure of extension cover in tillage device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a mounting structure for an extension cover in a tillage device, and in particular, it facilitates attachment and detachment of the front and rear extension covers to and from the front and rear covers, and the structure is simple. The purpose of this invention is to provide a mounting structure for an extension cover in a tillage device, and in order to achieve this purpose, the front and rear extension covers are removably attached to the front and rear covers of the tillage device. Attach the extended front cover provided at the outer end of the front cover with mounting tools such as bolts installed horizontally in the width direction, and make sure that the axis is oriented in the width direction at each rear end of the front and extended front covers. The front/extended front cover can be removed by inserting a pivoting tool such as a pin through a pivot part provided for the rear cover and a pivot part provided at each front end of the rear/extended rear cover so as to be coaxial with the pivot part. It is characterized in that the rear part and the extended rear cover are pivotally supported to be connected to the rear part and the extended rear cover.

Hereinafter, one embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a rotary tilling device attached to a tractor via a three-point link, and support arms 2 are attached from both sides of a gear case (not shown) of the device 1. From the outer end, a transmission case 3 and a side frame are installed below.

A pawl shaft (not shown) is provided horizontally between the transmission case 3 and the lower end of the side frame, and an extension pawl shaft 4 is detachably attached to each outer end of the pawl shaft so as to extend outward. There is.

Reference numeral 5 denotes a front cover that covers the claw shaft from above, and is fixed to each inner side of the transmission case 3 and the side frame, and each outer end thereof is bent downward to form a flange portion 6.

Reference numeral 7 designates a pair of extension front covers that cover each of the extension claw shafts 4 from above, and their inner ends are in contact with the respective flanges 6 of the front cover 5 so as to extend outwardly from each of the front covers 5. Although it is provided in a detachable manner, a notch 8 is formed on the inner side thereof into which the transmission case 3 or the side frame is inserted.

Then, the outer end of each extended front cover 7 is bent downward to form a flange portion 9, and a mounting hole 10, which is formed through the front end portion of the flange portion 9 in the width direction, is provided with a mounting tool 11, which is illustrated by a bolt, in the width direction. It is inserted horizontally in the direction.

Reference numeral 12 designates a horizontally stepped cylindrical mounting piece provided for each fixture 11, which is integrally formed with a large diameter part 14 having a female threaded part 13 opening outward, and a small diameter part 15 having a male thread. The tip of the fixture 11 is removably screwed into the female threaded part 13, while the small diameter part 15 is mounted through the front end of each flange part 6 of the front cover 5 in the width direction. hole 16
the fixing nut 17 is removably screwed into the
Thereby, the front end of each extended front cover 7 is attached to the front end of the front cover 5.

In addition, as mentioned above, the mounting tool 1 is installed without using the mounting piece 12.
If each extension front cover 7 is attached to the front cover 5 using 1 and a nut, there is a risk that each extension front cover 7 may be bent or deformed due to excessive tightening of the mounting tool 11 and the nut. However, in the embodiment, the lengths of the large diameter portions 14 of the mounting fixture 11 and the mounting piece 12 are made to correspond to the width of each extended front cover 7, and then the mounting piece 12 is attached to the front cover 5. Therefore, there is no such concern as mentioned above.

18 is a rear cover that covers the claw shaft from the rear; 19 is a pair of left and right extended rear force bars that cover each extension claw shaft 4 from the rear; each cover 18. On the lower surface side of each front end of 19, there is a pivot support 20.19 which has a horizontal cylindrical shape, opens on both sides, and whose axis is oriented in the width direction.
21 is provided.

and a pivot portion 20 of the rear cover 18 and each extended rear cover 19. A gap 22 is provided between the extended rear covers 19, and a portion of the outer end of the pivot portion 21 of each extended rear cover 19 is cut out to form a notch 23.

Each flange portion 6 of the front cover 5 is provided with a rear protrusion portion 24 positioned within each gap 22, and the flange portion 9 of each extended front cover 7 is provided with a rear protrusion portion 24 positioned within each of the cutout portions 23. A rear protrusion 25 is provided, and each rear protrusion 24
．． 25 includes a pivot portion 26 coaxially with each pivot portion 20, 21 of the rear/extended rear cover 18, 19.
27 is opened through in the width direction.

Reference numeral 28 denotes a pair of pivot stationery, exemplified by a pin having a shaft portion 30 eccentric to the head 29, which is connected to the front and each extended front cover 5, 7.
Each pivot point 26, 27 and rear/each extension rear cover 1
8 and 19 in a removable manner, and the head 29 is inserted into the rear protrusion 2 of each extension front cover 7.
5 with fixing bolts 31, and thereby,
The rear part and each extension rear cover 18 and 19 are pivoted to connect to the front part and each extension front cover 5 and 7, and the rear end of each extension front cover 7 is connected to the rear end of the front cover 5. It is installed.

In this way, each pivot 28 is attached to the rear and each extended rear cover 1.
The front parts of 8 and 19 are also used as attachment members for the respective extension front covers 5 and 7, as well as a pivot member and attachment members for the front cover 5 of each extension front cover 7.

Reference numeral 32 denotes a pair of left and right fixing plates, which are detachably attached to the upper surface of each outer end of the rear cover 18 and the upper surface of the inner end of each extended rear cover 19 with bolts 33 or the like, so that the rear cover 18 and each extended rear cover 19 are connected to each other. is arranged so that they rotate together.

According to the embodiment with the above structure, when removing each of the extension front and extension rear covers 7, 19, first, each fixing plate 32 is removed, and then each fixing bolt 31 of each pivot support 28 is removed. Then, each pivot 28 is attached to the front/extended front covers 5, 7, and the rear/extended rear covers 18, 1.
9, each extended rear cover 19 can be removed together with the rear cover 18.

Then, by removing the fixing nuts 17 of each mounting piece 12, each extension front cover 7 can be removed.

In the manner described above, each of the extension front and extension rear covers 7, 19 can be easily removed.

In order to pivot the rear cover 18 to the front cover 5, prepare a pair of pivots with short shafts, and attach each pivot to each of the front and rear covers 5, 18. Cardinal branch 26, 20
The head of each pivot is removably inserted into the front cover 5.
This is done by removably fixing it to each of the rear protrusions 24 with fixing bolts.

Also, to install each of the front and rear extension covers 7 and 190, follow the above steps in reverse, first removing the rear cover 18, then
Rear cover 18
This can be easily done by attaching it to the front cover 5 as well.

In the embodiment, a pair of pivots 28 extend the rear and each extended rear cover 18. 19 is pivoted to the front and each extension front cover 5, 7, and the rear end of each extension front cover 7 is attached to the rear end of the front cover 5. The above embodiment can be achieved using a single pivot by inserting the same pivot from the pivot 27 of the extension front cover 7 on one side to the pivot 27 of the extension front cover 7 on the other side using a support. It can also perform a similar function.

The present invention is as described above, and the front extension cover and the extension rear cover can be easily attached and detached from the front and rear covers, and the front and extension front covers of the rear extension rear cover and the extension front cover can be easily attached and detached from each other. The structure is simple and highly practical, as it serves as the mounting member for the front cover, the pivot member, and the mounting member for the front cover of the extension front cover.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted plan view of a rotary tilling device showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line II = II in Fig. 1, and Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. Line arrow sectional view,
FIG. 4 is a rear view of FIG. 1. 1... Rotary tillage device, 5... Front cover 7.
... Extension front cover, 11... Mounting tool, 12... Mounting piece, 17... Fixing nut, 18... Rear cover, 19... Extension rear cover, 20... Rear cover Pivotal portion, 21... Pivotal portion of the extended rear cover, 26.
... Front cover pivot part, 27... Extension front cover pivot part, 28... Pivot support, 31... Fixing bolt.

Claims (1)

[Scope of utility model registration request] A mounting tool such as a bolt installed horizontally in the width direction of the extension front cover provided at the outer end of the front cover in a cultivating device that removably attaches the extension front and rear covers to the front and rear covers. At the same time, a pivot part is provided at each rear end of the front/extended front cover so that the axis thereof faces in the width direction, and a pivot part is provided at each front end of the rear/extended rear cover so as to be coaxial with the pivot part. To the prepared cardinal branches,
A mounting structure for an extension cover in a tillage device, characterized in that a rear part/extended rear cover is pivotally supported to be connected to a front part/extended front part cover by inserting a pivot tool such as a pin.