JPS6038322Y2 - Protection device for drive case in side drive rotary - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a protection device for a drive case in a side drive rotary having a structure in which the left and right shaft portions of a tiller are supported by the drive case and side frames.

In order to widen the tilling width, it is often done to connect the auxiliary tiller to the shaft of the tiller so that the auxiliary tiller is mounted on the outer side of the drive case in the left and right direction. In order to avoid leaving uncultivated areas, the tips of the innermost tilling claws of the auxiliary tiller are placed as close to the drive case as possible, so that when the innermost tilling claws turn upward, The plowing claws come very close to the outer plate of the drive case, and at this time, the tilling claw itself or the plowed soil clod collides with this outer plate, causing problems such as denting and damaging the thin outer plate.

A structure in which a protective body is attached to cover the outer side of the drive case in the vicinity through which the tip of the cultivating body passes is known as Utility Model Publication No. 39-28852. In the event of a strong collision, there is a risk that the drive case will also be dented.

Therefore, this invention was devised to prevent the drive case from being dented even when subjected to such a strong collision force, and its structure is such that the left and right shaft portions 6a, 6b of the tiller 6 are connected to the drive case 4. and a side frame 5, and covers the inner side portion of the drive case 4 in the vicinity where the tip portion of the auxiliary tiller 7 attached to the tiller 6 passes through. 16 is attached to the drive case 4 in a drive case protection device for a side drive rotary, such that a gap 21 exists between the protector 16 in the attached state and the outer part of the drive case 4.
This is a protection device for a drive case in a side drive rotary, in which the front and rear parts of a protector 16 are attached to a thick back plate 20 of a drive case 4 via stay bolts 19, respectively.

Next, the specific structure will be explained based on one embodiment shown in the drawings.The side drive rotary shown in FIGS. 1 and 2 has pipe frames 2,
3 is extended, and the drive case 4 is installed on the left pipe frame 2.
In addition, the upper part of the side frame 5 is fixed to the right pipe frame 3, and the left and right shaft parts 6a and 6b of the tiller 6 are fixed to the lower part of the drive case 4 and the side frame 5, respectively. An auxiliary tiller 7 is connected to the left shaft portion 6a on the left outer side of the drive chain case 4, and an auxiliary tiller 8 is connected to the right shaft portion 6b, and this side drive rotary 9 is connected. The rotation of the PTO shaft 11 of the mobile agricultural machine 10 is transmitted to the input shaft 1 of the gear box 1 via the universal joint shaft 12, for example.
3, bevel gear mechanism 14 and drive chain mechanism 15
The input shaft 13 is configured to rotationally drive the cultivating body 6 via the input shaft 13 and the input shaft 13 .

Therefore, in this embodiment, as shown in FIGS. 3 and 4, the protective body 16 is formed using a thick plate having a U-shaped cross section.
The case cover 17 of the U-shaped cross section of the drive chain case 4 formed of a thin plate is covered with the protector 16 from the outside, and the front and rear ears 17a, 17b of the case cover 17 are closed.
A stay bolt 19 formed by fitting into this pipe stay 18 is inserted into the thick back plate 20 of the drive case 4, with the pipe stay 18 interposed between the outer part 16a of the protector 16 and the pipe stay 18. If you screw it in, the case lid 17
This protector 16 is attached to the back plate 20 of the drive case 4 while leaving a gap 21 between the outer part 17b of the protector 16 and the outer part 16a of the protector 16. The outer part 16a of this protector 16 attached near the inner side of the path of the tip is the outer part 17 of the case lid 17.
The front protection parts 16b, 16b of the protection body 16 are configured to cover the front and rear parts 17c, 17c of the case i17.

Although not shown, the front and rear portions 17cw of the case lid 17
In a state of use where there is little risk of damage to the protector 17c, a protector having a simple structure in which only the outer portion is formed into a flat plate may be attached as shown in the above-mentioned illustrated example.

Therefore, when the auxiliary tiller 7 is connected to the tiller 6 to perform tilling work as shown in FIG. The tilled soil clods, pebbles, etc. are scattered, and the thick protector 16 attached to the inner side of the path of the tip of the tiller claw 7a is attached to the thin case lid 17.
Because it covers the auxiliary cultivating body 7, there is a risk of collision with soil clods, gaps in the shaft bearing part during turning operation, or
Even if the auxiliary tiller 7 causes rotational wobbling due to, for example, not being bent, the tiller claws 7a come into direct contact with the protector 16, the drive case covered with the protector 16 This reduces the risk of damage to the case lid.

This invention is constructed as described above, and when the protector 16 is attached to the drive case 4, the protector 16
The front and rear parts of the protector 16 are attached to the thick back plate 20 via stay bolts 19, respectively, so that there is a gap 21 between the outside of the protector 16 and the outside of the drive case 4. External force due to earth clods etc. acting on the side is caused by stay bolt 1
The external force is transmitted from the protector 16 to the thick back plate 20 of the drive case 4 via the 9° 19, and does not directly act on the case lid 17 of the drive case 4. Moreover, since the outer part of the drive case 4 has a gap 21 with respect to the protector 16, even when the protector 16 is elastically deformed inward due to the above-mentioned external force, the outer part of the drive case 4 is Since no external force is applied to the drive case 4, the case i17 constituting the outer part of the drive case 4 is sufficient to simply have an extremely thin wall to prevent foreign matter such as dust from entering the drive case 4. Drive case 4
Since the dead weight of the mobile agricultural machine 10 and, by extension, the dead weight of the side drive rotary 9 can be sufficiently reduced, the overhang weight of the mobile agricultural machine 10 can be reduced, which is very effective in improving running stability.

[Brief explanation of the drawing]

Fig. 1 is a side view of a side drive rotary to which one embodiment of this invented device is applied, Fig. 2 is a rear view of the main part in Fig. 1, Fig. 3 is an enlarged view of the main part in Fig. 1, and Fig. 4 is a plan view of the drive case. Code explanation, 1... Gear box, 2, 3...
... Pipe frame, 4 ... Drive case, 5
...Side frame, 6... Cultivating body,
6. a, 6b... Left and right shaft parts, 7. Death...
Auxiliary cultivating body, 7a... Cultivating claw, 9...
Side drive rotary, 10... Mobile agricultural machine,
11... PTO shaft, 12... Universal joint shaft, 13... Input shaft, 14... Bevel gear mechanism, 15... Drive chain Mechanism, 16...
...Protective body, 16a, 17b...Outer part,
17...Case lid, 17a...Ear part,
16b, 17c...front and rear, 18...
Pipe stay, 19...Stay bolt, 20.
... Back plate, 21 ... Gap.

Claims (1)

[Scope of utility model registration request] The left and right shafts of the tiller are supported by the drive case and the side frame, and the outer side of the drive case covers the inner side of the vicinity through which the tip of the auxiliary tiller attached to the tiller passes. In a drive case protection device for a side drive rotary in which a protector as described above is attached to the drive case, the protector is installed so that there is a gap between the protector and the outer part of the drive case in the above-mentioned attached state. A protection device for a drive case in a side drive rotary, characterized in that the front and rear parts are respectively attached to a thick back plate of the drive case via stay bolts.