JPH0232035Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a threshing machine drive device mainly for driving a suction fan.

The dust removal section of the threshing machine is equipped with a suction fan, but this suction fan is housed in a suction fan chamber that protrudes from the threshing chamber with a step toward the front so as not to reduce the wind sorting function. There is.

By the way, this suction fan is driven by a belt from the drive shaft, but since the suction fan is located at the rear of the aircraft, it is too far from the drive shaft, so the power is temporarily transferred to the suction fan. It is guided to an intermediate shaft installed nearby, and power is obtained from it. For this reason, an intermediate bearing is required to support the intermediate shaft, but the area around this area is crowded with various pulleys, and there is not much space to install it, and there is also a need for a threshing room and a suction fan room. As mentioned above, there is a step, so
Even the mounting configuration is difficult.

Therefore, this invention solves the above-mentioned problems by installing this intermediate bearing across the threshing room and the suction fan room, and by interposing a suitable intervening member in the step part, and also solves the above-mentioned problem. This is to make effective use of this part.

Hereinafter, as an embodiment of this invention, a case of a thresher mounted on a combine harvester will be explained with reference to the drawings.
FIG. 2 is a front view of the suction fan, FIG. 3 is a developed sectional view, and FIG. 4 is a plan view of the main parts.

The threshing machine is mounted on the main body of the combine, and the suction fan and the intermediate shaft pulley are centrally arranged on one side of the rear of the threshing machine. The threshing room 1 is surrounded by a frame wall 2, and at the rear of the threshing room 1 there is a suction fan that is also enclosed by a frame wall 3 but protrudes forward (towards the front) with a step above the threshing room 1. A chamber 4 is formed.

By the way, inside the threshing room 1, from the front, a drive shaft 5, a No. 1 helical shaft 6, a No. 2 helical shaft 7, etc. are provided, and these are connected to a pulley 8, respectively.
9 and 10 are fixed and connected by a belt 11. These power systems are connected to the suction fan chamber 4.
The signal is transmitted to a pulley 13 fixed to an intermediate shaft 12 provided nearby.
is provided at the rear end of the intermediate portion 12. intermediate shaft 12
Two pulleys 14, 14' are fixed to the front end of the pulley 14, and a belt 15 connects one of the pulleys 14 to the fan shaft 17 of a suction fan 16 housed in the suction fan chamber 4. The signal is transmitted to the fixed pulley 18. The other pulley 14' is for PTO and is used for driving various attachments.

An intermediate bearing 19 supports the intermediate shaft 12, and is installed across the threshing chamber 1 and the suction fan chamber 4. In both of these installations, the flange portion 19a is externally tightened to the frame walls 2 and 3 using bolts 20, etc. However, since the threshing chamber 1 side is low, an intervening member 21 is necessary. It is. That is, it is attached directly to the suction fan chamber 4 at one location, and to the threshing chamber 1 at two locations, one of which is the intervening member 2.
1 is a support shaft 22, and the other is a spacer 23. Furthermore, it is preferable that the arrangement of these three locations be as close to an equilateral triangle as possible.

Secondly, both belts 11, 15 require a suitable tensioning mechanism. That is, if the above-mentioned pulleys 8, 9, 10, 13, 14, and 18 are arranged as shown in FIG. 2, at least three tension mechanisms are required.

In this invention, these tension mechanisms are centrally installed on the support shaft 22, which is one of the intervening members. That is, between the pulley 13 and the pulley 10, there is a support shaft 2.
By pivotally supporting the pulley 24 on 2, this becomes a tension pulley. Also, pulley 8 and pulley 9
Between the pulleys 14 and 18, tension arms 27 and 28, each having rollers 25 and 26 rotatably mounted at their tips, are pivotally supported on the support shaft 22. These tension arms 27, 28 are then pressed against each belt 11, 15 by appropriate tension mechanisms 29, 30. In addition,
In the above, all the tension mechanisms are concentrated on the support shaft 22, but in some cases, the spacer 23
It is also possible to change this to the axis and use it in conjunction with this.

In addition, in Fig. 3 and Fig. 4, inside the threshing room 1, the No. 1 helical shaft 6 has a No. 1 helical shaft 31.
However, the No. 2 helical shaft 7 is provided with a No. 2 helical shaft 32, and the end of the No. 2 helical shaft 7 is provided with a thrower 3 for returning unthreshed grains to the threshing room 1.
3 is housed in the reduction cylinder 34.

As mentioned above, this invention consists of the above-mentioned configuration,
First, place the intermediate bearing 19 in one place in the suction fan chamber 4.
The intermediate bearing 19 can be attached to the threshing room 1 at two locations and at three locations, and when attached to the threshing room 1 which is lower than the suction fan room 4, it is attached via the intervening member 21 in between. is firmly fixed. Therefore, it goes without saying that deformation caused by insufficient fixing force will not occur, and this intermediate bearing 19 connects the threshing room 1 and the suction fan room 4, and the frame wall 2 of the threshing room 1 Increased rigidity and no chattering or deformation.

On the other hand, regarding the support shaft 22 which is the intervening member 21, since its one end is firmly fixed by the frame wall 2 of the threshing chamber 1 and the other end is firmly fixed by the intermediate bearing 19, it is supported by both sides. The rigidity is further strengthened, and the pulley 24 and the two tension arms 27 and 28 can be centrally supported in this way.

Furthermore, attaching the pulley 24 and tension arms 27, 28 to the support shaft 22 has conventionally been difficult.
This means that the mounting members that were required for each are no longer necessary, which makes it possible to reduce costs and save space.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention.
The figure is a side view of the combine, FIG. 2 is a front view of the suction fan, FIG. 3 is a developed sectional view, and FIG. 4 is a plan view of the main parts. Code, 1... Threshing room, 4... Suction fan room, 1
2... Intermediate shaft, 16... Suction fan, 19... Intermediate bearing, 21... Intervening member, 22... Support shaft, 23
... Spacer, 24 ... Fixed pulley, 27, 28 ...
tension arm.

Claims (1)

[Claims for Utility Model Registration] The driving force of a suction fan 16 housed in a suction fan chamber 4 protruding from the threshing chamber 1 with a step is obtained from an intermediate shaft 12 provided near the suction fan chamber 4. In the drive device for a threshing machine, the intermediate bearings 19 that support the intermediate shaft 12 are installed at three locations, one in the suction fan chamber 4 and two in the threshing chamber 1, and are also attached to the threshing chamber 1. In this case, the drive device for a thresher is characterized in that it is attached via an intervening member 21 in the middle. The intervening member 21 described in claim 1 of the claims for registration of a utility model is a support shaft 22, and a fixed pulley 24 and tension arms 27, 28 are attached to this support shaft 22.
A drive device for a threshing machine, characterized in that it is fitted with a. A drive device for a threshing machine, characterized in that the intervening member 21 is a spacer 23 as set forth in claim 1 of the utility model registration.