JPS5941923Y2 - Reinforcement support structure for rotary cover in center drive type rotary work machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a reinforcement support structure for a rotary cover in a center drive type rotary actuator.

Conventionally, in a center drive type rotary working machine, the rotary cover has been supported only by a gear case provided at the center.

As a result, abnormal vibrations occur on both sides of the rotary cover due to the vibrations of the working machine, and installation of the rotary cover has the disadvantage that the cover may become twisted depending on the condition.

This proposal was made in view of the above drawbacks.

In a center drive type rotary working machine in which a gear case 2 having a connecting pitch frame 10 on the front side supports a rotary cover 7 covering a tilling section 6, reinforcing members 18 supporting the rotary cover 7 are provided on both sides of the gear case 20. By providing a reinforcing support structure for the rotary cover supported by the connecting pitch frame 10, the support of the rotary cover is strongly reinforced, abnormal vibrations occurring in the rotary cover are reduced, and twisting of the rotary cover is prevented. The purpose is to

. The present invention will be explained based on the embodiment shown in the drawings. The rotary work machine A is constructed by a center drive system in which a drive transmission section 1 is provided in the center, and a tilling shaft is attached to the tip of a chain case 3 formed integrally with a gear case 2. A rotary cover I covering the tilling part 6 is supported by the gear case 2 and supported by a support rod 8 at the rear of the machine body. A tail wheel 9 is provided.

A connecting hitch frame 10 is provided on the front surface of the gear case 2, and the connecting hitch frame 10 and the rear of the tractor B are connected to the Wrrtc.
The rotary work A is connected to the tractor B by connecting the provided hitch frame 11 with a connecting pin 12.

The connecting hitch frame 18 has opposing side frames 1 on both sides of the board 10a.
0b, 10b, and the opposite side frame 10b.

An input shaft 13 extending from the gear case 2 is pivotally supported in the opposing space 10b, and the power shaft 13 and the tractor BOPTO shaft 14 are connected by a joint 15 to transmit the power of the tractor B to the work implement A. .

The rotary cover 7 has an upper plate cover 7a whose front and rear sides are curved downward, side plate covers 7b, 7b provided on both sides of the upper plate cover 7a, and a shaft rotatably mounted on the rear edge of the upper plate cover 7a. The side plate frames 7'' and γ' of the U-shaped plate frame 1' formed on the upper surface of the upper plate cover 7a are connected to the mounting seat 1 provided at the rear of the gear case 2. It is attached and supported by X7.

A reinforcing member 18 supporting the rotary cover 7 on both sides of the gear case 20 is supported by a connecting hitch frame 19 to reinforce the support of the rotary cover 7. The reinforcing member 18 is attached to the gear case 2 at the center of the bottom. It is constituted by a trapezoidal plate 18' forming a relief space S to prevent interference between the two.

Then, the bottom sides of the trapezoidal plate 18' are bent upward, and the lower surfaces of the bent parts 19, 19 are attached to the front upper surface of the rotary cover I on both sides of the gear case 2 with bolts 20 and 20. The support state of the rotary cover 7 is reinforced by attaching the middle part of the upper surface to the lower surface of the opposing side frames iob and iob with bolts 21 and 21.

Moreover, a pipe rod, an angle steel material, etc. can also be used as the reinforcing material 18.

22 in the figure is a reinforcing rib formed on the trapezoidal plate 18', 23 is a reinforcing rib formed on the upper plate cover 7a of the rotary cover 7, and the bent part 19 of the trapezoidal plate 18' is on the reinforcing rib 23. In the case of attaching the recess 19' to the bent portion 19, the recess 19' overlaps with the rib 23.

Therefore, according to the present invention, the reinforcing material 18 continuous to the front end of the rotary cover 7 is disposed across both sides of the gear case 20, and the reinforcing material 18 is continuously continuous to the connecting hitch frame 10. Therefore, the support of the rotary cover 7 is strongly reinforced by the reinforcing material 18, and abnormal vibrations occurring in the rotary cover 7 can be reduced.
This has the effect of being able to reliably support the rotary cover 7 without the risk of twisting.

[Brief explanation of the drawing]

FIG. 1 is an overall side view showing a center drive type rotary work machine according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a plan view of a reinforcing member, and FIG. 4 is a side view thereof. A: Center drive rotary work machine, 2
・・・・・・Gear case, 6・−・・Plowing section, 7・
... Rotary cover 10 ... Connection hitch frame, 18 ... Reinforcement material.

Claims (1)

[Scope of utility model registration request] In a center drive type rotary working machine in which a gear case 2 having a connecting pitch frame 10 on the front side supports a rotary cover 7 covering a tilling section 6, a reinforcing member 1B connected to the front end of the rotary cover 1 is provided. A reinforcing support structure for a rotary cover, which is disposed across both sides of a gear case 20, and a reinforcing member 18 is integrally connected to a connecting pitch frame 10.