JPH01128714A - Reaping pretreatment apparatus for combine - Google Patents

Abstract

PURPOSE:To perform smooth operation of the title apparatus over a long period without using particular bellow cover, etc., by laterally sliding a reaping pretreatment mechanism with a rack-pinion driving apparatus. CONSTITUTION:When a pinion gear 29 is rotated in normal or reverse direction, a rack member 28 engaging with the gear is moved to effect the lateral sliding of a reaping pretreatment mechanism supporting the rack member 28 in a direction reverse to the motion of the rack member relative to a supporting case 16 (running machine body) linked with the rack member through a connection rod 35. The rack member moves in lateral direction according to the rotation of the pinion gear even if the mechanism is fastened with rust to some extent.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applied to a combine harvester in which a reaping pretreatment mechanism for reaping grain culms is attached to a traveling machine body equipped with a threshing device so as to be able to slide laterally from side to side. This relates to the pre-processing device, and in detail, when mowing with the uncut side in the left hand, the reaping pre-processing mechanism is extended to the left to increase the distance between the uncut grain culm and the left crawler traveling device. In order to prevent the uncut grain culm from being pushed down by the muddy soil pushed out by the crawler, and to perform splitting work with the uncut grain culm positioned on both the left and right sides, the reaping pre-treatment mechanism should be moved to the middle position between the left and right sides. During combine harvesting, the weeding tool is positioned in front of the right crawler traveling device, and the reaping pretreatment mechanism is slid horizontally to prevent the right crawler traveling device from stepping on the uncut grain culm on the right side. The present invention relates to a pretreatment device.

[Conventional technology]

Conventionally, in this type of combine harvester pre-treatment device, the main frame, which also serves as a transmission case, extends forward and downward from the front end of the traveling machine, and the reaping pre-treatment mechanism can be slid horizontally onto the tip of the main frame. A support case is attached to the support case, and a horizontal threaded drive shaft that engages with the female screw member on the support case side is installed between the support case and the weeding tool support rod on the pre-reaping treatment mechanism side. The reaping pre-treatment mechanism was configured to slide laterally by rotating it around its axis (for example, as disclosed in Japanese Patent Application No. 17558/1986).
No. 7).

[Problem that the invention seeks to solve]

Since this drive shaft is located close to the ground, it does not protrude into the conveyance path of the harvested grain culm to be sent to the rear threshing device (although it has the advantage of not interfering with conveyance, They are easily affected by moisture, and rust due to moisture can cause malfunctions, or it is necessary to take measures such as installing bellows covers to prevent rust.

In particular, since a female threaded member has a thread carved into its inner circumferential surface, the part where it engages with the drive shaft tends to become a closed space, and there is no way for the rust to escape, and this rust obstructs the rotation of the drive shaft. It turns out.

An object of the present invention is to provide a horizontal sliding drive device for a reaping pretreatment mechanism that can operate smoothly over a long period of time without the need for a special bellows cover or the like by adopting a rational structure. It is in.

[Means for Solving the Problems] The characteristic configuration according to the present invention is that the reaping pretreatment mechanism is controlled by a rack and pinion type drive device consisting of a rotationally driven pinion gear and a rack member that is engaged with the pinion gear and moves left and right. The structure is such that it can be driven horizontally and horizontally, and its effects are as follows.

[For production]

For example, as shown in Fig. 1, when the pinion gear (29) is oscillated in the forward and reverse directions, the rack member (28) engaged with it oscillates, and the pre-reaping mechanism (17) to which the rack member (28) is attached is activated. , rack member (28) and connecting rond (35)
Support case (16) linked via (traveling aircraft)
The rank member (28) laterally slides in a direction opposite to the swinging direction of the rank member (28). Therefore, in a device using such a rack and pinion type drive device, only a part of the pinion gear in the circumferential direction and a part of the rank member are engaged, and the entire circumference of the pinion gear is covered by the rack member. Since there is no space, even if there is some rust, when the pinion gear is rotated, the rack member will move left and right accordingly.

〔Effect of the invention〕

Therefore, there is no need to take special measures such as installing a bellows cover as in the past, and it is useful for the horizontal sliding structure of the reaping pretreatment mechanism only for drive devices that need to be installed close to the ground. I was able to do it. -- [Example] As shown in Fig. 2, the combine harvester includes a pulling device (2) that pulls up the planted grain culms that have been divided by the weeding tool (1), and a pulling device (2) that pulls up the planted grain culms that have been divided by the weeding tool (1), and a device that cuts the grain culms after being pulled up. A pre-harvesting process consisting of a reaping device (3) that collects grain culms, a packer (4) that collects the harvested grain culms in the center of the cutting width, a vertical conveyance device (6) that transports the collected grain culms toward the rear threshing device (5), etc. The vehicle is configured to include a device and a driver's seat (7) disposed on the lateral side of the vertical conveyance device (6).

The above-mentioned weeding tool (1), pulling device (2), reaping bag R
(3), packer (4), etc. are collectively referred to as the reaping pre-treatment mechanism (
17), and the lateral sliding structure of this pre-reaping treatment mechanism (17) with respect to the traveling body (9) will be explained.

As shown in FIG. 1, a vertical frame (10) is installed at the front end of the traveling aircraft (9),
) A horizontal transmission case (11) is rotatably supported around the horizontal axis at the upper end of the transmission case (11). This horizontal transmission case (
11) on the outer circumferential surface of the main frame (
12) and the horizontal transmission case (11).
The internal rolling shaft (13) and the transmission shaft of the main frame (12) (
14) by a bevel gear mechanism (15), and the end input pulley (
8) is configured to receive power from an engine (not shown) and transmit it to a transmission shaft inside the main frame. A support case (16) is provided at the tip of the main frame (12), and a reaping pretreatment mechanism (17) is attached to this support case (16).

The reaping pre-treatment mechanism (17) in this tip support case (16)
) ' mounting structure will be explained. As shown in Fig. 1, a sliding shaft (18) aligned along the width direction of the fuselage slides in the direction of its own axis (X) at the attachment part of the main frame (12) of the tip support case (16). A passive bevel gear (19) is attached to the hexagonal intermediate portion, and a drive bevel gear (20) is fixed to the tip of the main frame transmission shaft (14) to transmit power to the sliding shaft (18). A structure is formed. This passive bevel gear (19)
is fitted onto the hexagonal middle part of the sliding shaft (18) so that it can rotate integrally with the sliding shaft (18), and is rotatably supported by the tip support case (16) via a bearing (21). (18) The configuration allows for lateral sliding.

The left and right ends of the sliding shaft (18) protruding left and right from the tip support case (16) are provided with a lifting device (2), respectively.
(2) Bevel gear transmission mechanism (22
), (22) are provided. ``On the front side of the sliding shaft (18) is a pipe-type first sliding frame (
23) is pivoted to the tip support case (16) via the bushes (24) and (24) so as to be able to slide laterally, and the left and right weeding tool supports are provided at the left and right ends protruding from the tip support case (16). Left and right support frames with fixed rods (25),
(25) are connected and fixed.

Moreover, further forward of the first sliding frame (23), a second sliding frame (26) is provided with a left and right support frame (25).
, (25), and is inserted from the front opening side into a holder (27) having a substantially U-shaped cross section and extending further forward from the front end of the support case (16), and is supported by a loose fit; It is configured to be slidable relative to the holder (27).

Next, the lateral sliding drive device of the reaping pretreatment mechanism (17) will be explained. A fan-shaped rack member (28) is pivotally supported to the left support frame (25) so as to be horizontally swingable around the vertical axis (Y), and is engaged with the rank member (28) to rotate the vertical axis. A pinion gear (29) is provided to swing the rack member (28) forward and backward around (Y). on the other hand,
As shown in FIG. 2, the left bevel gear transmission mechanism (
22) The lifting transmission case (30) is raised from the lifting device (2) from the case (22A), and a branch transmission case ( 30A), and this branch transmission case (30A) is equipped with the pinion gear (29) driving motor (
31) is attached via the placket (32). A downward transmission shaft (33) is transmission connected to the downward output shaft of this drive motor (31) by a compression ring (34), and the pinion gear (29) is connected to the lower end of this downward transmission shaft (33).
It is installed so that it can be rotated as one unit. Moreover, the rank member (
A connecting rod (35) is installed between the supporting case (16) and the connecting rod (35), and the connecting rod (35) is connected to the reaping pre-treatment mechanism (28) based on the amount of left-right movement of the rack member (28).
17) is configured as a drive transmission member for laterally sliding driving. Therefore, the rack member (28) and the reaping pretreatment mechanism (17) operate in the opposite manner so that when the rack member (28) swings to the left, the reaping pretreatment mechanism (17) laterally slides to the right. Such a rack member (28) and pinion gear (2
9), the drive motor (31), etc. are referred to as a rack and pinion type drive device (36).

〔Betsuji completely defeated〕

The rack member (28) may be a linear rod member in which a screw is carved to engage with the pinion gear (29).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the pre-reaping treatment device for a combine harvester according to the present invention, and FIG. 1 is a sectional view showing the lateral sliding structure of the pre-reaping treatment mechanism, and FIG. 2 is an overall side view. (5)... Threshing device, (9)... Traveling machine, (17)... Reaping pre-treatment mechanism, (28)
... Rank member, (29) ... Pinion gear, (35) ... Rack and pinion drive device.

Claims (1)

[Claims] The reaping pre-treatment mechanism (17) for reaping grain culms is connected to the threshing device (5).
) mounted on the traveling aircraft (9) so that it can slide left and right, and a pinion gear (29) that is rotatably driven.
), and a rack member (2
8) A reaping pretreatment device for a combine harvester, which is configured to drive the reaping pretreatment mechanism (17) horizontally and laterally by a rack and pinion type drive device (36) comprising: