JPH062511Y2 - Combine harvesting pretreatment device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is to install a screw shaft across a cutting pretreatment mechanism for cutting grain culms and a traveling machine body equipped with a threshing device, and to install the screw shaft in the same manner. The present invention relates to a combine harvesting pretreatment device in which a harvesting pretreatment mechanism is configured to be laterally slidable with respect to a traveling machine body by rotating in the forward and reverse directions about an axis.

[Conventional technology]

In a combine harvesting pretreatment device of this type, a female screw member screwed onto the screw shaft has conventionally been fixed to a support case on the traveling machine body side (Japanese Patent Application No. 62-272339).

[Problems to be solved by the invention]

When the cutting pretreatment mechanism equipped with such a cutting device is slid sideways, the support corresponding part of the cutting pretreatment mechanism side supported with respect to the traveling body side support case changes. Although it is slightly twisted or tilted, the effect may also be exerted on the screw shaft that is laid across the pre-mowing treatment mechanism and the traveling-machine-side support case, causing axial misalignment. Therefore, it is conceivable that the screwed state of the screw shaft and the female screw member may change, and the screw shaft may be bitten by the female screw member during the lateral sliding to stop operating.

An object of the present invention is to provide a screw shaft drive structure that can be smoothly operated by changing the mounting state of the female screw member.

[Means for solving problems]

According to a characteristic configuration of the present invention, a female screw member screwed to the screw shaft is attached to one of the cutting pretreatment mechanism and the traveling machine body, and the female screw member is attached to the attachment portion of the screw shaft. The movement in the axial direction is restricted, and it is mounted in a state in which the movement in the direction orthogonal to the axial center is allowed, and its action and effect are as follows.

[Action]

That is, by restricting the movement of the screw shaft in the axial direction, and by rotating the screw shaft about its axis, for example, if the female screw member is attached to the cutting pretreatment mechanism, this female screw member will be cut. It moves in the axial direction of the screw shaft together with the pretreatment mechanism. Moreover, since the movement is allowed in the direction orthogonal to the axis of the screw shaft, the screw shaft is affected by the twisting of the pre-mowing treatment mechanism during the lateral sliding drive and the female screw member is On the other hand, even if the posture is changed, the posture change degree can be alleviated by moving in the orthogonal direction.

[Effect of device]

Therefore, even if the screw shaft is misaligned, the screw shaft and the female screw member can be maintained in the desired occlusal posture over the entire lateral sliding stroke of the cutting pretreatment mechanism, and the smooth operation of the screw shaft is maintained. In addition to this, the modification for that purpose is simply to change the female screw member to a state in which it can be moved in a direction orthogonal to the axis of the screw shaft.

〔Example〕

As shown in FIG. 3, 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 transport device (4) that focuses the harvested culm on the center of the cutting width
And a conveyor belt with left and right protrusions (4B), a vertical pre-processing device (6) for transferring the concentrated grain culm to the rear threshing device (5), and a lateral side of the vertical transfer device (6). And a driver's seat (7) arranged in the.

The weeding tool (1), the raising device (2), the mowing device (3), the confluent conveying device (4), etc. are collectively referred to as a mowing pretreatment mechanism (17), and this mowing pretreatment mechanism (17) The lateral sliding structure for the traveling body (9) will be described. As shown in FIG. 1 and FIG. 2, a vertical frame (10) is erected at the front end of the traveling body (9), and a horizontal transmission case (11) is installed at the upper end of the vertical frame (10). It is rotatably supported around its axis.
The main frame (12) in the front-back direction of the fuselage 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 of the main frame (12) are fixed.
(14) is connected with the bevel gear mechanism (15), and the power from the engine (not shown) is received by the end input pulley (8) of the lateral transmission case (11) transmission shaft (13), Transmission shaft
It is designed to be transmitted to (14). The main frame (1
A support case (16) is provided at the front end of 2), 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 FIG. 1 and FIG. 2, at the mounting portion of the main frame (12) of the tip support case (16), a sliding shaft (18) in a posture along the lateral direction of the machine body has its own axis (X). Bearings are supported so that they can slide in any direction, and the drive bevel gear (20) is fixed to the end of the driven bevel gear (19) and the main frame transmission shaft (14) that are formed in the intermediate portion of the hexagonal shape, and the sliding shaft (18 ) Is formed. The driven bevel gear (19) is externally fitted to the hexagonal intermediate portion of the sliding shaft (18) to be integrally rotatable, and the bearing (21)
It is rotatably supported by the tip end support case (16) through the shaft, and allows the sliding shaft (18) to slide laterally.
The left and right end portions of the sliding shaft (18), which project left and right from the tip support case (16), respectively, have a bevel gear transmission mechanism (22) for supplying power to the raising devices (2), (2), respectively. (22) is provided.

A pipe-type first sliding frame (23) is provided on the front side of the sliding shaft (18) via bushes (24) and (24) to support the tip support case (1).
6) It is pivotally supported by 6) so that it can slide laterally, and the tip support case
(16) The left and right first support frames (25), (25) pivotally supporting the bevel gear transmission mechanism are connected and fixed to the left and right ends projecting from (16), and the reaping pretreatment mechanism side base end frame (40) is fixed. Configured. On the other hand, a half holder (27) is arranged in front of the tip support case (16), and the plate-shaped brackets (27a), (27a) at the left and right ends of the holder (27) are attached to the tip support case (16). ) It is attached to both lateral sides and bolted.

Furthermore, the support frame (4) that supports the left and right weeding tools (1), (1)
3), (43), the second sliding frame (26) and the clipper-type mowing device (3) are bridged in a state where the second sliding frame (26) is positioned rearward, and the mowing pretreatment mechanism side The tip frame (39) is constructed. Then, the second sliding frame (26) is engaged with the holder (27) from the front side so as to be relatively slidable laterally, and is connected to the left and right support frames (25) and (25) as a connecting portion. The tip frame (39) is fixed through three brackets (41) on the left and right, and the tip frame (39) and the base frame (40) on the pre-mowing treatment mechanism side are integrally formed into the support case (1).
6) It is pivotally supported so that it can slide laterally.

Next, the lateral sliding drive device of the pre-mowing treatment mechanism (17) will be described. As shown in FIG. 1 and FIG. 2, a screw shaft (28) having a large advancing angle in the lateral direction in the tip support case (16).
And a female screw member (29) that engages with the screw shaft (28) is provided on the left side surface of the tip support case (16).
The left end of the screw shaft (28) is supported by the left first support frame (25), and a driven bevel gear (30) protruding from the left first support frame (25) is attached. on the other hand,
Above this driven bevel gear (30) and on the left side of the confluent conveyor
A drive motor (32) is installed on the upper lateral side of (4), and a downward output shaft of the drive motor (32) and the screw shaft (2
And 8) are transmission-coupled via a transmission shaft as a downward transmission mechanism (33). In the figure, (34) is a drive bevel gear that is attached to the lower end of the transmission mechanism (33) and meshes with the driven bevel gear (30).

On the other hand, as shown in FIGS. 1 and 3, the sliding shaft (18)
The first bevel gear case (3) which is also used by the first support frame (25) for the bevel gear transmission mechanism (22) provided at both ends of the
While covering with 5), the first bevel gear case (35) is raised as a support stand to erect the transmission case (36), and the second bevel gear case (37) is installed in the middle of the raised transmission case (36). A branch structure is provided in which the power is branched from the second bevel gear case (37) to supply power to the transport belt with protrusions (4B) and the packer (4A). And this second
The mounting base (38) is extended from the bevel gear case (37), and the drive motor (32) is mounted on the mounting base (38).

Next, the mounting structure of the female screw member (29) will be described. The female screw member (29) is positioned so as to abut against the side surface recessed portion of the support case (16), and the holder (27)
The bracket (27a) for fixing the bracket to the support case (16) is extended to the female screw member (29) side, and the chain of the female screw member (29) is received by the tip of the bracket (27a) to support the support case (16). Of the female screw member (29) on the side surface of the bracket and the bracket (27a).
(28) While adopting a structure that restricts movement in the axial direction,
The recessed portion is set to a size that allows the female screw member (29) to move in a direction orthogonal to the axial direction of the screw shaft.

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

[Brief description of drawings]

FIG. 1 shows an embodiment of a combine harvesting pretreatment device according to the present invention. FIG. 1 is a cross-sectional plan view showing a lateral sliding drive structure of the harvesting pretreatment mechanism, and FIG. 2 is lateral sliding of the harvesting pretreatment mechanism. FIG. 3 is a vertical side view showing the drive structure, and FIG. 3 is an overall side view. (5) …… Threshing device, (9) …… Running machine, (17) …… Mowing pretreatment mechanism, (28) …… Screw shaft, (29) …… Female screw member.

Claims (1)

[Scope of utility model registration request] 1. A screw shaft (28) is installed over a traveling pretreatment mechanism (17) for cutting grain culms and a traveling machine body (9) equipped with a threshing device (5), and the screw shaft (28). ) Is rotated forward and backward around its axis to set the pre-mowing treatment mechanism (17)
(9) A combine harvesting pretreatment device configured to be able to slide laterally with respect to (9), wherein a female screw member (29) screwed to the screw shaft (28) is used as a harvesting pretreatment mechanism (17). Attach to either one of the traveling body (9) and this female screw member (29).
Is attached to its mounting portion, the movement of the screw shaft (28) in the axial center direction is restricted, and the combine is mounted in a state of allowing the movement in the direction orthogonal to the axial center before the cutting process. apparatus.