JPS6211369Y2 - - Google Patents

Description

[Detailed description of the invention] This invention consists of a power take-off shaft that protrudes to one side from the split transmission case and a power take-off shaft that protrudes to the same side from the working device side transmission case that is removably fixedly connected to the machine. A work equipment mounting structure for a walking type mobile agricultural machine in which a case housing a transmission mechanism for interlocking the input shaft is removably installed between the two cases, the purpose of which is to By using the originally provided tightening bolts to securely connect the split cases,
The object of the present invention is to provide a structure for fixing the transmission case to the transmission case that is simple, inexpensive, and sturdy.

First, an embodiment of the present invention will be described based on the drawings. As shown in FIG. A two-split transmission case 7 with a shaft 5 protruding laterally and outwardly, and a control handle 6 extending rearward from the top of the shaft 5.
A rotary tiller A, which is an example of a working device, is fixedly connected to the rear hitch 8 of the mission case 7, and a connected member 9 that can be fitted to the rear hitch 8 from the rear and from the lateral side. The transmission case 10 of the tilling device A and the transmission case 7 are fixedly and detachably connected through the transmission case 10 and the power take-off shaft 5.
A transmission case (hereinafter referred to as a sub-chain case) 13, which houses a chain transmission mechanism 12 for interlocking the input shaft 11 protruding in the same direction as the power output shaft 11, is reversible and replaceable back and forth. In the walk-behind cultivator installed on the ground, the working device mounting structure of the present invention is constructed as follows.

That is, as shown in FIG. 2, among the tightening bolts for fixedly connecting the split cases 7A and 7B of the split transmission case 7, the tightening bolt 14 located corresponding to the sub chain case 13
are extended to the construction side of the sub chain case 13, and the tightening bolts 1 are attached to the opposing case walls 13A and 13B of the sub chain case 13 when the sub chain case 13 is reversed and replaced.
The tightening bolt 1 is attached to the part corresponding to 4.
Through hole 15 for extending bolt portion 14a of No. 4,
15 and 15, 15, and through holes 15, 15 and 1 of the opposing case walls 13A, 13B.
5, 15 A cylindrical reinforcing member 1 extending between the peripheral portions
6 and 16 are fixedly installed, and with the extending bolt portion 14a of the tightening bolt 14 penetrating and protruding into the through hole 15, 15 or 15, 15 of the sub chain case 13, the protruding portion is screwed. The auxiliary chain case 13 and the transmission case 7 are fixedly connected by tightening a nut 17 with a matching operating grip. That is, the extending bolt portion 14a is connected to the sub chain case 13 and the transmission case 7.
It also serves as a fixed connection bolt.

The chain transmission mechanism 12 includes two sprockets 12A and 12B with different numbers of teeth supported at both ends in the sub chain case 13, and a transmission chain 12C suspended between the two sprockets 12A and 12B. By reversing and replacing the auxiliary chain case 13, the drive rotational speed of the tilling device A can be changed to a higher or lower speed by changing the ratio of the number of teeth of both the sprockets 12A, 12B.

In the figure, reference numeral 18 denotes a nut for fixing and connecting the mission case, which is screwed onto the tightening bolt 14.

Further, to explain an example of the means for attaching the rotary tilling device A, after the sub chain case 13 is fixedly connected to the transmission case 10 of the tilling device A, the tilling device A is attached to the handle frame 19 of the main machine in a hook shape. It is suspended and supported via the member 20, and in this state, the through holes 15, 15 or 15, 15 formed in the sub chain case 13, the sprocket 12A or 12B, a nut 17 that fits into the connected member 9 of the tilling device A from the lateral outer side, fixedly connects the connected member 9 and the rear hitch 8 via a pin, and is screwed onto the tightening bolt 14; By the tightening operation, the transmission case 7 and the sub chain case 13 are fixedly connected.

In summary, the work equipment mounting structure for a walking-type mobile agricultural machine according to the present invention has the following features:
Split case 7 of the two-split transmission case 7
Tightening bolt 14 for fixedly connecting A and 7B
extends to the construction side of the transmission case 13, and this extended bolt portion 14a is attached to the transmission case 13.
The transmission case 13 is also used as a fixed connection bolt between the transmission case 13 and the transmission case 7.
The structure for fixedly connecting the divided cases 7A and 7B of the transmission case 7 is made by using the tightening bolt 14 which is originally firmly attached to the divided cases 7A and 7B in a double-sided state in order to fixedly connect the divided cases 7A and 7B. It has become possible to construct the device easily, inexpensively, and robustly.

Further, as in the above embodiment, the transmission case 1
In the case where a cylindrical reinforcing member 16 is fixedly installed between the opposing case walls 13A and 13B at a position corresponding to the penetration portion of the extending bolt portion 14a of No. 3,
There is an advantage that the fixed connection structure of the transmission case 13 can be made more sturdy.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the working device mounting structure for a walking type mobile agricultural machine according to the present invention, and FIG. 1 is an overall side view of the walking type mobile tiller, and FIG. 2 is a partially cutaway plan view of the main parts. . A... Working device, 5... Power take-off shaft, 7...
Mission case, 7A, 7B... split case,
10, 13...Transmission case, 11...Input shaft, 1
2... Transmission mechanism, 13A, 13B... Opposing case wall, 14... Tightening bolt, 14a... Extension bolt portion, 16... Cylindrical reinforcing member.

Claims (1)

[Scope of Claim for Utility Model Registration] A power take-off shaft 5 protruding to one side from the split transmission case 7 and a power take-off shaft 5 protruding to the same side from the working device A side transmission case 10 which is removably fixedly connected to the machine. In the working device mounting structure for a walking type mobile agricultural machine, a case 13 housing a transmission mechanism 12 for interlocking an input shaft 11 is removably installed between the two cases 10 and 13. Shion case 7
A tightening bolt 14 for fixedly connecting the divided cases 7A, 7B' is extended to the construction side of the transmission case 13, and this extended bolt portion 14a
A working device mounting structure for a walk-behind mobile agricultural machine, characterized in that the bolt is also used as a fixed connection bolt between the transmission case 13 and the transmission case 7. The extending bolt portion 1 of the transmission case 13
Opposing case wall 13A at a position corresponding to the penetration part of 4a,
13B, a working device mounting structure for a walking type mobile agricultural machine according to claim 1, wherein a cylindrical reinforcing member 16 is fixedly installed. The working device mounting structure for a walking type mobile agricultural machine according to claim 1 or 2, wherein the transmission mechanism 12 is a chain transmission mechanism.