JPH0751018B2 - Combine harvesting pretreatment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a combine harvester in which a pretreatment mechanism for raising and harvesting a plurality of rows of planted grain culms is configured to be laterally movable with respect to a traveling machine body. Regarding a processing device.

[Conventional technology]

On a combine, one side of the aircraft (generally the left side)
There are two types of cutting work, one is a standard work mode for cutting and running as uncut land, and the other is a splitting work in which a large field is cut and passed in advance in the middle of the field in order to classify it into a size suitable for cutting.

In a small combine harvester, the cutting width is smaller than the passing width of the left and right traveling devices in the traveling machine.Therefore, in order to enable the above middle cutting by traveling without stepping on the uncut corns on the left and right of the machine, before cutting It is necessary to arrange the processing mechanism near the left and right center of the front surface of the traveling body. For this reason, in this small machine, the traveling device on the uncut land side will be close to the uncut land planting culm during mowing, and in wetlands, it will be heaped up as the traveling device on the uncut land side subsides. When pushing the uncut land culm with the mud extruded to the uncut land side, or when the extruded mud rises to the stock of the uncut land culm and the next planted culm is cut, The mowing device bites mud,
There was a problem that the plant was cut and transported with the mud attached.

The combine pretreatment device was developed by paying attention to such an actual situation, and by significantly moving the cutting pretreatment mechanism laterally to the uncut side at the time of turning, the uncut land is planted. To avoid the above-mentioned problems caused by pushing mud with a space between the grain stalk and the traveling device, and to defeat the planted grain culms in the left and right uncut areas by arranging the pre-mowing treatment mechanism in front of the traveling machine body. Without this, it is possible to perform middle-division work.

[Problems to be solved by the invention]

What must be considered here is not only that the cutting pretreatment mechanism needs to be moved laterally, but it is necessary to determine the lateral movement position without disturbing the raising and weeding functions, and The positional relationship between the device and the pre-mowing treatment mechanism also had to be considered, and there was still room for improvement.

An object of the present invention is to reasonably set the lateral movement end of the pre-mowing treatment mechanism to the uncut side in the positional relationship with the traveling device so as not to hinder the weeding performance and the raising performance as much as possible. Is in the point of providing.

[Means for solving problems]

The characteristic configuration according to the present invention, while weeding the planted culm by a weeding tool preceding the reaping device, a pre-cutting mechanism for cutting a plurality of rows of culms after raising the weeds, a crawler traveling device. The harvesting pretreatment device is located in front of the threshing device located on the upper side, and the harvesting pretreatment mechanism is configured to be laterally movable laterally with respect to the traveling machine body on which the threshing device is mounted. In the swivel cutting mode in which the mechanism is laterally moved to the most uncut land side, the cutting line located on the most uncut site side among the multiple cutting lines and the planting line adjacent to this on the uncut site side With the weeding tool on the most uncut side located approximately in the center between the two, make sure that the crawler traveling device on the uncut side is located more on the cut ground than on the cutting strip on the cut side. In this section, the lateral movement end of the pre-mowing processing mechanism to the uncut land side with respect to the traveling machine body is set. The action and effect of is as follows.

[Work]

In the above characteristic configuration, when the pre-mowing treatment mechanism is laterally moved to the most uncut land side, a cutting strip located on the most uncut land side,
Since the weeding tool on the most uncut side is located in the approximate center between this and the adjacent planting strips on the uncut side, as shown in FIG.
The raising device (2) can be positioned above the cutting strip (a) on the side of the most uncut land, and the raising device (2) and the uncut can also be moved by the lateral movement of the pre-mowing treatment mechanism (17). The positional relationship with the cutting strip (a) on the ground side can be maintained in a state where the raising and weeding performance is not hindered.

Also, depending on the soft and hard condition of the field, the crawler traveling device (39) on the uncut side may sink into the field surface and push the mud laterally. In that case, as shown in FIG. The mud that is about to be extruded to the uncut area side is stopped by the stump of the cutting strip (a) on the most uncut area side, and the movement of the mud to the uncut area side is suppressed. Therefore, it is possible to prevent the mud from adhering to the uncut grain culms and to prevent the threshing operation from being hindered by handling the cut grain culms together with the mud.

〔The invention's effect〕

As a result, the stump can be used as a mud pushing control barrier by a simple modification of the lateral movement amount setting device of the pre-mowing treatment mechanism,
Compared with the case where the purpose is to keep the traveling device away from the sloping strips of uncut land, the effect of extruded soil can be avoided more effectively, contributing to the improvement of threshing and sorting performance, while It was possible to provide an excellent cutting pretreatment device that does not cause the performance and weeding performance to deteriorate even when the pretreatment mechanism is moved laterally.

〔Example〕

As shown in FIG. 5, the combine is a raising device (2) for raising the planted culm sown by the weeding tool (1), and a mowing device (3) for cutting the culm after the raising. , Left and right packers (4A) as a confluent transfer device (4) for concentrating the cut grain culm in the center of the cutting width, and a conveyor belt with left and right protrusions (4B), and the concentrated grain culm to the rear threshing device (5) Mowing pretreatment device comprising a vertical transport device (6) and the like, and a vertical transport device (6)
And a driver's seat (7) disposed laterally of the vehicle.

The above-mentioned weeding tool (1), raising device (2), mowing device (3), packer (4), etc. are collectively referred to as a mowing pretreatment mechanism (17), and this mowing pretreatment mechanism (17) is Is disposed in front of the threshing device (5) disposed above the crawler traveling device (39) and is configured to be laterally movable with respect to the traveling machine body (9) equipped with the threshing device (5). Next, the lateral movement structure of the cutting pretreatment mechanism (17) with respect to the traveling machine body (9) will be described. As shown in FIGS. 3 and 4, a longitudinal frame (10) is provided at the front end of the traveling body (9).
And a horizontal transmission case (11) is rotatably supported on the upper end of the vertical frame (10) so as to be rotatable around its horizontal axis. The main frame (12) in the front-back direction of the machine is fixed to the outer peripheral surface of the lateral transmission case (11), and the transmission shaft (13) of the lateral transmission case (11) and the transmission shaft (14) of the main frame (12). And bevel gear mechanism (15)
The horizontal transmission case (11) is configured to receive power from the engine (not shown) at the end input pulley (8) of the transmission shaft (13) and transmit the power to the mainframe transmission shaft (14). I am doing it. A support case (16) is provided at the tip of the main frame (12), and a mowing pretreatment mechanism (17) is attached to the support case (16).

The mounting structure of the pre-mowing treatment mechanism (17) in the tip support case (16) will be described. As shown in FIGS. 3 and 4,
A sliding shaft (18) in a posture along the lateral width direction of the machine is bearing-supported so as to be slidable in the axial center (X) direction of the main frame (12) of the tip support case (16). A passive bevel gear (19) and a drive bevel gear (20) are fixed to the tip of the main frame transmission shaft (14) at an intermediate portion formed in a hexagonal shape to form a transmission structure for the sliding shaft (18). The passive bevel gear (19) is externally fitted to the hexagonal intermediate portion of the sliding shaft (18) and is configured to be integrally rotatable, and is also pivotally supported by the tip support case (16) via the bearing (21). The sliding shaft (18) is supported and is configured to allow lateral sliding of the sliding shaft (18). Bevel gear transmission mechanisms (22) for supplying power to the raising devices (2), (2) are provided at the left and right end portions of the sliding shaft (18) that project left and right from the tip support case (16). (22) is provided.

On the front side of the sliding shaft (18), a pipe-type first sliding frame (23) is pivotally supported by the tip support case (16) via bushes (24), (24) so as to be able to slide laterally. At the same time, the left and right support frames (25), (25) fixed to the left and right weeding tool support rods are connected and fixed to the left and right ends protruding from the tip support case (16). Further, a second sliding frame (26) is installed over the left and right support frames (25) and (25) further forward than the first sliding frame (23), and at the same time the supporting case (16) is A holder (27) having a substantially U-shaped cross section, which extends further forward from the front end, is inserted and loosely supported from the front opening side and is configured to be relatively slidable relative to the holder (27).

Next, the lateral movement drive device of the pre-mowing treatment mechanism (17) will be described. As shown in FIG. 3 and FIG. 4, a screw shaft (2
8) is inserted, and a female screw member (29) that engages with the screw shaft (28) is provided on the left side surface portion of the tip support case (16). Left end of screw shaft (28) is left support frame (25)
The driven bevel gear (30) is attached to the front support bevel gear (30) and is projected from the left support frame (25). On the other hand, a drive motor (32) is installed above the driven bevel gear (30) and laterally above the left merging and conveying device (4B), and a downward output shaft and a screw shaft ( And 28) are transmission-coupled via a transmission shaft as a downward transmission mechanism (33). In the figure (34) is the transmission mechanism (33)
It is a drive bevel gear that is attached to the lower end of and engages with the driven bevel gear (30).

On the other hand, as shown in FIGS. 3 and 5, the first bevel gear case (35) integrally formed with the support frame (25) with respect to the bevel gear transmission mechanism (22) provided at both ends of the sliding shaft (18). ) And the first bevel gear case (3
Raise 5) as a support stand and set up a transmission case (36),
A second bevel gear case (37) is provided in the middle of the raising transmission case (36), and the second bevel gear case (3) is provided.
The power is branched from 7) to form a branch structure that supplies power to the conveyor belt with protrusions (4B) and the packer (4A). The mounting table (38) is extended from the second bevel gear case (37), and the drive motor (32) is mounted on the mounting table (38).

The first bevel gear case (35) has a structure in which the pivotal support portion (35a) of the sliding shaft (18) is bulged toward the center of the cutting width to suppress bulging outward of the cutting width, and the pivotal support portion (35a) ) Is limited to the size to hold the bearing, and the support frame (16) is inserted between the first sliding frame (23) and the pivotal support (35a) as shown by the phantom line in FIG. It has a structure that is compact and allows a large lateral movement stroke of the pre-mowing treatment mechanism (17) by forming a pocket space that allows for the.

In the above-mentioned configuration, as shown in FIGS. 1 and 2, when the pre-mowing treatment mechanism (17) is set to the laterally moving end on the uncut side in the round cutting operation, the uncut side crawler traveling is performed. In the state where the device (39) is located so that the already-cut land of the cutting strip (a) located on the side of the most uncut land is close to the side of the side of the cutting, the cutting line (a) on the side of the most uncut land is provided. And the cutting strip on the most uncut side so that the weeding tool (1) on the most uncut side is located approximately in the center between the cutting strip (a) and the planting strip (b) on the uncut land. The pre-cutting mechanism (17) is laterally moved to a position at a distance L ₁ = about 150 mm from (a). Then, the raising device (2) on the uncut land side is located above the cutting strip (a) and the raising device (2) can be constructed so as not to raise the performance.

In the above, the pre-mowing treatment mechanism (17) is set around the cutting work in a position particularly suited to wetland work.
The reference position (c) of the pre-mowing treatment mechanism (17) is a position closer to the right side by L ₃ = about 168 mm from the laterally moving end on the uncut side, and further, in the split work mode, approximately L ₂ = from the reference position. The position is closer to the right by about 100 mm, and the total movement stroke of the pre-mowing treatment mechanism (17) is about 268 mm.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a combine harvesting pretreatment device according to the present invention. Fig. 1 is a plan view showing a positional relationship between a harvesting pretreatment mechanism and a harvesting strip, and Fig. 2 is a position between the harvesting strip and a traveling device. Fig. 3 is a rear view showing the relationship, Fig. 3 is a cross-sectional plan view showing the lateral movement structure of the reaping pretreatment mechanism, Fig. 4 is a vertical side view showing the lateral movement structure of the reaping pretreatment mechanism, and Fig. 5 is an overall side view. is there. (1) …… Weeding tool, (3) …… Mowing device, (5) …… Threshing device, (9) …… Traveling machine, (17) …… Mowing pretreatment mechanism, (39) …… Crawler running Equipment, (a) ... cutting line on the most uncut side, (b) ... planting line on uncut land.

Claims (1)

[Claims] 1. A precutting mechanism (17) for weeding a planted grain culm by a weeding tool (1) preceding the reaping device (3) and slicing a plurality of rows of grain culm after raising the weeding. ) Is disposed in front of the threshing device (5) arranged above the crawler traveling device (39), and the pre-mowing treatment mechanism (17) is mounted on the traveling machine body (9) equipped with the threshing device (5). ), The combine pre-mowing pretreatment device is configured to be laterally movable with respect to each other, and in the swivel cutting form in which the pre-mowing treatment mechanism (17) is laterally moved to the most uncut area side, Among the cutting lines, the cutting line (a) located on the most uncut side and the planting line (b) adjacent to the cutting line (b) adjacent to the cutting line on the most uncut site side are in the approximate center. With the tool (1) in the position, the crawler traveling device (39) on the uncut side is located on the already cut field rather than the cutting strip (a) on the most uncut side. So that the said cutting pretreatment mechanism (1
(7) A combine harvesting pretreatment device having a lateral movement end to the uncut land side with respect to the traveling machine body (9).