JPS6028242B2 - Straw cutting blade attachment structure of threshing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a straw cutting blade mounting structure for removably fixing a straw cutting blade protruding into a handling chamber in a threshing machine. It is normal for straw cutting blade maintenance work such as replacement and inspection to be carried out simultaneously with maintenance work in the handling room. The aim is to make it easy to attach and detach, and to be able to securely hold the straw cutting blade in place without wobbling when it is installed.

First, an embodiment of the present invention will be described based on the drawings. In a threshing machine, a pair of blades 2A, 2A, A plurality of U-shaped straw cutting blades 2 with 2A are connected to the blade body 2.
A, 2A, etc. are in the position of protruding into the handling chamber 1, and are removably fixed at intervals in the axial direction of the handling cylinder. Blade insertion holes 4a, 4a, . . . are formed in the opposing slope portion 4A, through which the blades 2A, 2A, . Along with being
As described above, each blade connecting plate part 2 of the group of straw cutting blades 2 in which the blades 2A, 2A, . . . are projected into the handling chamber 1.
B...Press the back side to the opposing slope 4A side and cut the straw cutting blade 2.
...Member 3 for collectively fixing the group to the opposing slope section 4A
A fixed mounting frame 4 is provided to removably hold the steel plate, and between this fixed mounting frame 4 and the fixed part village 3, the rotational force acting on the straw cutting blade 2 in conjunction with the straw cutting action causes the A locking mechanism is configured to increase the pressing force by the fixed part village 3, and the pressing force is applied to the swing opening/closing cover 5 for the handling room 1 in a state where the upper entrance 40 of the fixed support frame 4 is closed in the cover closing position. The member 3 is pressed and fixed to the mounting frame 4 in a changing mechanism operating position, and a support pressing portion 5A is fixed thereto, which releases the fixation when the cover is opened.

The above-mentioned locking mechanism is capable of being freely engaged and disengaged between the opposing slope portion 4A and the pressing member 3, and is engaged with an engagement hole 8 that constitutes a rotation fulcrum R by the rotational force of the pressing member 3 in the engaged state. The mating protrusion 9 is provided, and the inner surface a of the other opposing slope portion 4C of the mounting frame 4 and the contact surface b of the pressing member 3 that abuts against the inner surface a are connected around the fulcrum R of the pressing member 3 by the rotational force. The pressing member 3 is formed on a cam surface that presses the pressing member 3 toward the opposing plate portion 4A side, that is, the straw cutting blade 2 side as the pressing member 3 rotates.

1 in the figure is a clamp device for holding the handling chamber cover 5 in a closed position.

In the above configuration, first, the straw cutting blades 2 are set so that their blade bodies 2A, 2A, . The straw cutting blade 2... is fixed by setting it through the upper sekiguchi 4D and then closing and fixing the cover 5, and the removal of the straw cutting blade 2... is done by following the reverse procedure. be.

Incidentally, the present invention may be implemented by constructing the bush abutment pressing portion 5A of the cover 5 from an elastic body that elastically presses the pressing portion 3 in the cover closed position.

When this is done, the pressing member 3 will not shake due to the abutting pressing portion 5A, regardless of slight manufacturing or assembly errors.
can be pressed and fixed in the position where the pinching mechanism operates. In summary, the straw cutting blade attachment structure of the threshing machine according to the present invention is as follows:
Between a member 3 for pressing and holding the straw cutting blade 2 protruding into the handling chamber 1 from its back side and a fixed mounting frame 4 for holding the straw cutting blade 2 in a removable manner, the straw cutting blade 2 is A sliding door mechanism is configured to increase the pressing force of the section 3 by the applied rotational force, and the door opening/closing cover 5 for the handling room 1 places the member 3 against the fixed mounting frame 4 in the sliding mechanism working position. It is characterized by being configured to be press-fixable.

That is, the straw cutting blade 2 is fixed by the rotational force itself that acts on the straw cutting blade 2 during threshing through the husking mechanism between the detachable pressing member 3 and the fixed mounting frame 4, so the work can be done without tools. This allows the straw cutting blade 2 to be easily attached and removed, and in the installed state, the straw cutting blade 2 can be securely and strongly fixedly held. However, especially when using the present invention, it is necessary to fix the straw cutting blade 2 by the triggering action. Since the initial setting of the pressing member 3 to the bare mechanism working position can be performed by closing the opening/closing cover 5, and the pressing member 3 can be taken out by opening the cover 5, maintenance work for the straw cutting blade is generally easy. From the perspective of thresher maintenance work, which is performed simultaneously with indoor maintenance work,
The cover opening/closing work that is essential for maintenance work in the handling room can also be used for the straw cutting blade attachment/detaching work necessary for straw cutting blade maintenance work, streamlining and increasing the efficiency of the straw cutting blade 2 attachment/detaching work and, by extension, the maintenance work of the entire threshing machine. We were able to achieve this.

In this way, the present invention allows the straw cutting blade 2 to be easily attached and detached,
Moreover, it has become possible to provide a straw cutting blade attachment structure for a thresher that can securely and strongly fix the straw cutting blade 2.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the straw cutting blade attachment structure of a threshing machine according to the present invention, FIG. 1 is a vertical sectional front view of the main part, FIG. 2 is an enlarged cross-sectional plan view of the main part, and FIG. 3 is a main part. It is an enlarged longitudinal sectional front view of the section. 1... handling room, 2... straw cutting blade, 3...
...Parts, 4...Fixed mounting frame, 5...Opening/closing cover, 5A...Miss abutment pressing part. Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. Between a member 3 for pressing and holding the straw cutting blade 2 protruding into the handling chamber 1 from its back side and a fixed mounting frame 4 for removably fitting and holding it. , constitutes a wedge mechanism that increases the pressing force by the member 3 by the rotational force acting on the straw cutting blade 2, and also allows the member 3 to be attached to the fixed mounting frame 4 by the opening/closing cover 5 for the handling chamber 1. A straw cutting blade mounting structure for a thresher is characterized in that it is configured so that it can be fixed by abutment and pressure in a wedge mechanism operating position. 2. The threshing machine according to claim 1, wherein the abutting and pressing portion 5A of the opening/closing cover 5 against the member 3 is made of an elastic body that elastically presses the member 3 in its closed position. Straw cutting blade mounting structure.