JPS6021924Y2 - Weed cling prevention device for mobile agricultural machinery - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a curtain wrapping prevention device that is installed on power tillers, agricultural tractors, and the like.

Conventionally, in this type of tool, a grass cutter was provided directly on the tiller claw, or was directly fixed to the claw shaft by welding or the like.

Therefore, it is difficult to process, and the number of low pits during tilling increases, making it difficult to perform the work efficiently.

Therefore, the present invention eliminates the above drawbacks by fixing a tongue-shaped protrusion to the opening of the mounting bracket, which is formed in a U-shape when viewed from the top, to form a grass cutting tool, and attaching it to the claw holder in a detachable manner. To provide a curtain wrapping prevention device that is simple and increases work efficiency.

The embodiments of the present invention will be described in detail below with reference to illustrative drawings. Reference numeral 1 denotes a tilling transmission case, in which a tilling claw shaft 3 is rotatably supported by a lower shaft bearing part 2.

4 is installed on the tiller claw shaft 3 and the same holder 4 is installed with the claw holder.
A tilling claw 6 is fixed to the holder 4 through bolts and nuts 5 which are inserted laterally into the holder 4.

Reference numeral 7 denotes a curtain cutter fitting fitted to the claw holder 4' of the claw holder 4, which is located close to the bearing portion 2 of the tilling transmission case, and the curtain cutter fitting 7 is formed in a U-shape when viewed from above. A tongue-like protrusion 10 having a U-shaped longitudinal section and protruding laterally is fixed to an opening 9 of a mounting plate 8 to form a cylindrical shape as a whole, and the upper part of the tongue-like protrusion 10 The protruding portion 10' is formed in a semi-arc shape as shown in FIG. 4, and has a narrow end width in a semi-arc shape along the outer peripheral surface of the bearing portion 2 of the transmission case.

Reference numeral 11 denotes a notched bolt hole with an open bottom end formed in an inverted U-shape on the back surface of the mounting plate 8, and is configured so that the bolt/nut 5 can be inserted into the bolt hole 11.

Therefore, the pawl holder approaching the tilling transmission case 1
4' is fitted with a curtain cutter fitting 7, and is firmly fixed together with the tilling claw 6 by the bolt/nut 5 through the bolt hole 11. At this time, the bolt head 12 of the bolt/nut 5 forms a tongue-shaped protrusion. It is configured to face the body 10 in a state of contact.

When the claw shaft 3 is rotated, the tongue-like protrusion 10 protruding from the curtain cutter 7 reliably cuts grass or straw wrapped around the bearing part 2 of the tilling transmission case.

As described above, in accordance with the present invention, a tongue-like protrusion body formed in a semicircular arc shape with an upper protrusion portion along the outer peripheral surface of the bearing portion of the transmission case is provided on the mounting plate having a U-shape in plan. Grass and straw wrapped around the bearing part of the transmission case are easily cut, and compared to a simple flat protrusion, the rotation locus is formed by the thin plate thickness of the tongue-like protrusion. It has less resistance to the soil and can improve cutting efficiency, and the hollow space formed by the U-shaped mounting plate and the tongue-shaped protrusion allows the whole to be formed into a cylindrical shape, and can be attached to the tiller claw holder. It is easy to fit and install, and has the effect of allowing the curtain cutter to be configured compactly.

In addition, since the upper protrusion of the tongue-like protrusion has a narrow tip, entangled grass can be easily removed from the protrusion, allowing for smoother curtain-cutting work. Since the bolt is in contact with the bolt, the load is received by the bolt.
This has the effect of preventing damage to the tongue-like projection body.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a rear view of a tillage device equipped with the device of the present invention. FIG. 2 is a side view of the curtain cutter according to the present invention. FIG. 3 is a plan view of the same. FIG. 4 is a front view of the same. Figure 5 shows
FIG. 1: Tillage transmission case, 4': claw holder, 7: curtain cutter, 8: mounting plate, 10: tongue-like protrusion.

Claims (1)

[Scope of utility model registration request] A pawl holder 4' is planted on the circumferential surface of the tilling pawl shaft 3 which is mounted on the side of the tilling transmission case 1, and the tilling pawl 6 fitted into the pawl holder 4' is laterally inserted into the pawl holder 4'. In a mobile agricultural machine fixed through bolts and nuts 5,
At the opening of the mounting plate 8 which is U-shaped in plan, there is a U-shaped vertical cross section.
A tongue-like protrusion body 10 with a narrow tip whose upper protrusion protrudes laterally is fixedly attached to form a cylindrical curtain-cutting metal fitting 7 as a whole,
The upper protrusion part of the tongue-like protrusion body 10 is connected to the bearing part 2 of the transmission case.
It is formed in a semicircular arc shape along the outer circumferential surface, and the mounting plate 8
An inverted U-shaped notch bolt hole 11 with an open lower end and whose upper end is approximately the same height as the upper protrusion of the tongue-shaped projection body 10 is formed on the back surface of the bolt hole 11. The grass cutting tool 1 is inserted through the hole hole 11 with the grass cutting tool 7 fitted into the pawl holder 4, which is configured to allow the nut 5 to be inserted therein and is located close to the tillage transmission case 1. This device for preventing curtain curling in a mobile agricultural machine is constructed so that a bolt head 12 of a bolt/nut 5 comes into contact with a tongue-like protrusion 10 when the bolt/nut 5 is fixed.