JPS6131605Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a rotary cover provided on a tiller or rotary working machine.

In a center drive type rotary work machine, the power transmission structure that transmits power from the tractor to the tiller is located in the center of the machine; in this case, the power transmission structure is built into the tiller. The case is inserted into a notch formed rearward from the center of the front edge of the rotary cover. When the tilling case is inserted into the notch in this way, the gap between the tilling case and the edge of the notch causes looseness between the two, which causes vibration and noise. In some cases, the tilled soil would scatter from these gaps during tilling.

Therefore, in this proposal, a rubber edge is attached to the edge of the notch, and this rubber edge fills the gap between the tillage case and the tillage case, thereby eliminating vibration and noise and reducing the scattering of tilled soil. This is what we are trying to prevent.

The present invention will be explained below based on embodiments shown in the drawings.

A is a rotary working machine connected to the rear of a tractor 1, with a tilling case 2 provided in the center of the machine body, and a power transmission shaft 3 extending forward from the upper end front of the tilling case 2. Axle 3 to tractor 1
Connect it to the PTO shaft 4 installed at the rear of the PTO.
The power from the shaft 4 is transmitted to the tilling main shaft 5 via the transmission shaft 3, and the power is transmitted to the tilling shaft by a power transmission structure 7 which is built into the tilling case 2 using a power transmission chain 6. 8, and while the tractor 1 is towing the machine body, the tilling claws 9 erected on the tilling shaft 8 perform the tilling work. Note that the reference numeral 10 is a connecting frame extending forward from the front end of the fuselage, and this connecting frame 1
0 is connected to a hitch frame 11 provided at the rear of the tractor 1. Reference numerals 12 and 12 indicate main beams extending in the left-right direction from both sides of the upper end of the tilling case 2, and reference numerals 13 and 13 indicate mounting plates provided on the main beam 12, to which a lift link 14 is connected to the front end, and The upper end of this lift link 14 is connected to a lift arm 15 provided on the tractor 1, and the body of the rotary working machine A is raised and lowered by the lifting and lowering rotation of this lift arm 15. 16 is a plowing depth adjustment frame whose base end is pivotally connected to the mounting plate 13, 17 is a plowing depth adjustment handle, and 18 is a tail wheel.

19 is a rotary cover that covers the tilling part 20, and includes an upper plate cover 19a and this upper plate cover 1.
Rear cover 19b pivotally attached 21 to the rear edge of 9a
and left and right side covers 19c, 19c. And this rotary cover 19
The supporting structure is the front edge 19 of the upper plate cover 19a.
A notch 22 is formed rearward from the center of a', and the tilling case 2 is inserted into this notch 22, and the tips of the main beams 12, 12 provided in the tilling case 2 are provided with a triangular shape. support plate 23,2
3 is mounted, and mounting flanges 24, 24 are erected on the upper surface of the upper plate cover 19a, and the mounting flange 24 and the support plate 23 are mounted using bolts and nuts.

Reference numeral 25 denotes a rubber edge attached to the edge of the notch 22, which is formed into a structure in which a protruding piece 25' facing toward the inner part is integrally provided inside a rubber material having a U-shaped cross section, and this is attached to the tilling case. Notch 22 for intervening 2
I am trying to install it in the back part of the. To install this rubber edge 25, insert the notch 22 into the side opening 25a of the rubber edge 25 with the protruding piece 25' positioned on the lower side.
The edge of the notch 22 is intervened to cover the edge with a rubber edge 25, and the gap t between the edge of the notch 22 and the tilling case 2 is filled with the rubber edge 25 attached. It has a mounting structure. Sho 2
6 is a closing plate that closes the opening of the notch 22.

Therefore, when the rotary cover 19 is supported with the tilling case 2 interposed in the notch 22, the gap t between the edge of the notch 22 and the tilling case 2 is small.
is filled with the rubber edge 25, and the outer surface of the tilling case 2 comes into contact with the rubber edge 25 and does not come into direct contact with the rotary cover 19.

As described above, according to the present invention, it is possible to prevent the tilling case and the rotary cover from coming into direct contact with each other, so that the vibration and noise caused by the collision between the two can be alleviated by the rubber edge provided in the gap. Since the gap is filled with a rubber edge, it is possible to prevent the situation where the tilled soil is scattered from the gap during plowing work. A space is created between the lower surface of the rotary cover 19 on the periphery of the rubber edge 22 and the inner surface of the opening of the rubber edge 25.
The lower surface can be elastically deformed, and even if the tilled soil collides with the lower surface of the rubber edge 25 due to the rotation of the tilling claws 9, the shock is absorbed by the above-mentioned elastic deformation, and this elastic deformation causes the lower surface of the rubber edge 25 to deform. The adhered cultivated soil is easily peeled off, and no adherent accumulation of cultivated soil occurs in this area. Further, the upper surface of the rotary cover 19 and the opening of the rubber edge 25 are brought into close contact with each other without any gaps due to the elasticity of the protruding piece 25', which has the effect of improving the appearance of this part.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing the rotary working machine of the embodiment of the present invention, Fig. 2 is a plan view of the same part, Fig. 3 is a plan view showing the state in which the rubber rim is attached, and Fig. 4 is taken along the line shown in Fig. 3. Sectional view, FIG. 5, is a cross-sectional view of the rubber rim. A: rotary work machine, 1: tractor, 2: tillage case, 19: rotary cover, 19a: upper plate cover, 19a': front edge, 22: notch, 25: rubber edge, t: gap.

Claims (1)

[Scope of utility model registration request] In the rotary cover in which a notch 22 is cut out from the front edge toward the rear and the tilling case 2 is inserted into the notch 22, a rubber edge 25 is attached to the edge of the notch 22. , so as to fill the gap t between the rear peripheral edge of the notch 2 where the tilling case 2 has intervened and the same case 2, and to fill the gap t between the tilling case 2 and the rubber edge 2
5, a protruding piece 25' facing toward the inner part is integrally formed inside the rubber material having a substantially U-shaped cross section, and the protruding piece 25' is placed on the lower side inside the side opening 25a of the rubber edge 25. A rotary cover structure characterized in that a rubber edge 25 is attached to the edge of the notch 22 by intervening the edge of the notch 22.