JPS6124037Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mower cover structure.

For example, in a front-mounted drum mower that is mounted on the front of a tractor so that it can be raised and lowered via a front-mounted three-point link mechanism, it is compatible with the universal joint shaft of the mower body in order to avoid interference between the universal joint shaft and the mower body when raised. Since a cutout is provided in the area where the cutting blade is cut, a cutting blade cover cannot be provided in this area, resulting in the problem that grass clippings and the like will fly away. In other words, a drum mower has its cutter section driven by power from a tractor via a universal joint shaft.
Since the input shaft is located at the center of the front and back of the mower body, in order to avoid interference, it is necessary to provide a notch in the mower body at the corresponding part of the universal joint shaft, which poses a problem in preventing scattering.

The present invention solves these conventional problems, and its characteristics are that it is mounted on a vehicle via a link mechanism so that it can be raised and lowered freely, and that the universal joint shaft is driven by power from the vehicle. In the mower that is driven through the mower, a flexible cover is provided at a portion of the mower body that covers the tractor portion corresponding to the universal joint shaft, and an elastic body is provided to elastically support the cover in a desired posture.

Hereinafter, one embodiment of the present invention will be described in detail with regard to the illustrated embodiment. In FIG. 1, 1 is a tractor;
Reference numeral 2 denotes a front-mounted three-point link mechanism, which consists of a top link 3 and a lower link 4. 5 is a hydraulic cylinder for lifting and lowering, and 6 is a front power take-off device, which has a PTO shaft 7. Reference numeral 8 denotes a drum mower mounted on the front of the tractor 1 via a front three-point linkage mechanism 2 so as to be able to rise and fall freely, and as shown in FIGS. It consists of a mower body 10 provided. The cutter section 9 consists of a rotating disk 11, a cutting blade body 12 pivotally attached to the peripheral edge of the rotating disk 11, and a rotating drum 13 provided concentrically on the rotating disk 11, and is attached to the mower body 10. The gear case 14 is rotatably supported via a vertical shaft. The mower main body 10 is provided with a mounting frame 15 for the front three-point link mechanism 2, as well as an input shaft 16 and a transmission case 17.
etc. are provided, and each cutter portion 9 is configured to be rotationally driven inward from each other by power transmitted from the PTO shaft 7 of the tractor 1 to the input shaft 16 via the universal joint shaft 18. Mower body 10
There is a notch 1 on the rear side of the holder corresponding to the universal joint shaft 18.
9 is provided, and a cover 20 is provided to cover this notch 19 and hang down from the rear of the mower body 10. As shown in FIG. 4, the cover 20 is made of a flexible material with a bellows portion 21 at the portion corresponding to the universal joint shaft 18, and is attached to the mower body 10 with bolts/nuts 22 and a presser 23. There is. On the other hand, at the rear end of the notch 19 of the mower body 10, an elastic body 24 such as a piano wire is provided inwardly protruding from both left and right sides, and the cover 20 is elastically supported from the inside by this pair of elastic bodies 24. has been done. Note that the elastic body 24 is jointly fastened to the mower body 10 with bolts and nuts 22 and the like. A cutting blade cover 25 made of a flexible material is vertically disposed on the front edge and both side edges of the mower body 10 so as to surround the entire circumference of the mower body 10 together with the cover 20. As shown in FIGS. 5 to 7, the cutting blade cover 25 has a bag portion 26 formed at the upper end thereof, and a cutout portion 27 is formed at an appropriate location in the bag portion 26. It is supported at the upper end by a mounting rod 28 which is attached to the top end. Fixing metal fittings 29 are attached to the mounting rod 28 in correspondence with each notch 27, and the fixing metal fittings 29 are attached to the inner surface of a bent edge 30 formed on the periphery of the mower body 10 with bolts and nuts 31. There is. Although there are five mounting rods 28 in the circumferential direction, the cutting blade cover 25 may also be divided into five pieces corresponding to each of the mounting rods 28. A reinforcing plate 32 located inside the cutting blade cover 25 is attached to the front bent edge 30 of the mower body 10 by a plurality of bolts and nuts 33 in the horizontal direction.
This reinforcing plate 33 is for reinforcing the cutting blade cover 25 from the inside so that the cutting blade cover 25 pushes down the grass when mowing. It is in contact with the mounting rod 28 via 26 and cannot be rotated. The outer periphery of the universal joint shaft 18 is covered with a protective cover 35.

In the above configuration, when cutting grass or the like, the power from the front power extraction device 6 of the tractor 1 is used to direct the cutter parts 9 of the mower 8 inwardly ( The mower 8 is rotated in the direction of the arrow).
The vehicle is backed up by the tractor 1 while being grounded. Then, since the cutting blade cover 25 on the front edge side of the mower body 10 is reinforced with the reinforcing plate 32, the grass etc. is pushed down forward as shown in FIG. cutting blade body 12
Reap with. The cut grass is collected by a pair of rotating drums 1
3, it is collected toward the center and discharged to the rear. In this case, there is a cover 20 on the rear side from the notch 19 of the mower body 10, and it is held by a pair of left and right elastic bodies 24, so it is possible to prevent grass etc. from scattering from this part, improving safety. . Note that the grass collected in the center passes under the cover 20.

When driving on the road, the hydraulic cylinder 5 is operated,
The mower 8 is held in the raised position via the front three-point linkage mechanism 2. In this case, the universal joint shaft 18 is the eighth
Although the cover 20 is contacted as shown in the figure, the cover 2
0 is elastically supported by an elastic body 24, and as the elastic body 24 bends downward, the center part of the cover 20 escapes downward as shown in FIG. It will never come. When the mower 8 is lowered, the cover 20 is restored by the elastic body 24 and returns to the state shown in FIG. 4.

In the embodiment, a piano wire is used as the elastic body 24, but a coil spring may be stretched across the left and right sides, and the elastic body 24 is not limited to a front-loading type, but can be similarly implemented in a rear-loading type.

In this invention, a flexible cover is provided on the part of the mower body that corresponds to the universal joint shaft, and this is elastically supported by an elastic body, so it is possible to prevent grass etc. from scattering, and also prevent grass from coming into contact with the universal joint shaft. Sometimes the cover deforms against the elastic body and escapes downwards, but does not interfere with the upward movement.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a plan view, Fig. 3 is an enlarged partially cutaway side view, and Fig. 4 is a broken rear view of the cover part. , Fig. 5 is an enlarged view of Fig. 3 in the - arrow direction, Fig. 6 is an enlarged view of Fig. 5 in the - arrow direction, and Fig. 7 is an enlarged view of Fig. 5 in the - arrow direction.
The arrow view, FIG. 8, and FIG. 9 are action explanatory diagrams. 1...Tractor, 2...Muzzle three-point linkage mechanism,
8...Drum mower, 9...Cutter section, 10...
... Mower main body, 18 ... Universal joint shaft, 19 ... Notch, 20 ... Cover, 24 ... Elastic body.

Claims (1)

[Scope of utility model registration request] In a mower that is attached to a vehicle via a link mechanism so as to be able to be raised and lowered and is driven by power from the vehicle via a universal joint shaft, a portion of the mower body that covers the cutter portion that corresponds to the universal joint shaft is flexible. 1. A cover structure for a mower, comprising: a cover having a structure, and an elastic body elastically supporting the cover in a desired posture.