JPH0525445B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to a reaping machine equipped with a merging conveyance device that pulls up and reaps grain culms to join them in the center of the cutting width and send them out toward the starting end of a vertical conveyance device. A pre-harvesting structure for a combine harvester in which a pre-processing mechanism is installed so that it can move laterally with respect to the traveling machine body, and a vertical conveyance device is installed so that it can swing left and right around a rear fulcrum in conjunction with the left-right movement of the pre-harvesting mechanism. Regarding.

[Conventional technology]

As one of the conventionally known pre-harvesting treatment structures for this type of combine harvester,
There is a device disclosed in Publication No. 24503, which includes a merging conveyance device of a reaping pretreatment mechanism that moves laterally and laterally, and a front end of a vertical conveyor device that swings left and right to receive grain culms from the merging conveyor device. The problem that the interval in the direction changes as the pre-reaping treatment mechanism moves laterally to the left and right is solved by moving the pre-reaping mechanism back and forth along with the lateral movement.

[Problem that the invention seeks to solve]

It is true that the mechanism that moves the reaping pre-processing mechanism back and forth as well as its horizontal movement eliminates the positional deviation in the front-rear direction between the merging conveyance device on the reaping pre-treatment mechanism side and the front end of the vertical conveyance device. Grain culms can be transferred smoothly between the two parties,
If we were to provide a mechanism to move the pre-reaping mechanism, which is equipped with a pulling device, a reaping device, a merging conveyance device, etc., forward, it would have to be a large-scale mechanism, and it would be necessary to install the pre-reaping mechanism along with the left and right lateral movement mechanism. The disadvantage was that the mechanism for moving (moving left, right, back and forth) was large.

An object of the present invention is to provide a structure that can suppress deterioration in grain culm delivery caused by misalignment between the merging conveyance device on the side of the reaping pre-treatment mechanism and the front end of the vertical conveyance device by making simple improvements to the existing structure. It is in.

[Means for solving problems]

The characteristic structure of the present invention is that a pair of right and left anti-wrapping rods are provided above the merging conveyance device, and the rear end of the anti-wrapping rod is positioned opposite to the starting end of the vertical conveyance device at the rearmost position. and the rear half of the wrapping prevention rod is formed in a shape that follows a trajectory in which the starting end of the vertical conveying device moves from the rearmost position to the forwardmost position as the vertical conveying device swings left and right. There are certain points and , and the effects are as follows.

[Effect]

As described in the feature structure, by making the shape of the rear half of the anti-wrapping rod follow the movement locus of the starting end of the vertical transport device, as shown in Figure 1A, the starting end of the vertical transport device 6 is aligned with the machine body. When it is at the rearmost position in the front-rear direction, the grain culm from the merging conveyance device 4 is delivered from the rear end of the anti-wrapping rod 59 to the starting end of the vertical conveyance device 6, and as shown in FIG. When the starting end of the vertical conveying device 6 gradually moves toward the frontmost position, the grain culm from the merging conveying device 4 is delivered to the starting end of the vertical conveying device 6 from the middle of the rear half of the anti-wrapping rod 59. .

[Structure of the invention]

Therefore, even with the horizontal movement of the pre-harvesting treatment mechanism and the back and forth movement of the vertical conveyance device caused by the left and right swinging of the vertical conveyance device, the guide function of the anti-wrapping rod prevents the grain culm from being transferred between the two. In addition to being able to do this smoothly, it is possible to easily attach it to the existing mechanism (wrapping prevention rod) without using the conventional method of moving the pre-harvesting mechanism back and forth, which would lead to an increase in the size of the mechanism. All you need to do is make some modifications (change the shape).

〔Example〕

As shown in Fig. 6, the combine harvester has a weeding tool 1
A pulling device 2 that pulls up the planted grain culms separated by the grass, a reaping device 3 that reaps the grain culms after being pulled up, and a pair of left and right devices that serve as a merging conveyance device that collects the harvested grain culms in the center of the cutting width. The packer 4 includes a reaping pre-processing mechanism including a vertical conveyance device 6 for conveying the merged grain culms toward a rear threshing device 5, and a driver's seat 7 disposed on the lateral side of the vertical conveyance device 6. It is configured.

The above-mentioned weeding tool 1, pulling device 2, reaping device 3, packer 4, etc. are collectively referred to as the reaping pretreatment mechanism 17.
The structure for moving the reaping pretreatment mechanism 17 left and right with respect to the traveling machine body 9 will be described.

As shown in FIGS. 3 and 4, a vertical frame 10 is erected at the front end of the traveling body 9, and a horizontal transmission case 11 is rotatably mounted on the upper end of the vertical frame 10 about its horizontal axis. It is pivotally supported. The main frame 12 in the longitudinal direction of the aircraft body is fixed to the outer peripheral surface of the horizontal transmission case 11, and
The transmission shaft 13 serving as a rear fulcrum of the horizontal transmission case 11 and the transmission shaft 14 of the main frame 12 are connected by a bevel gear mechanism 15 to form the horizontal transmission case 1.
The input pulley 8 at the end of the transmission shaft 13 receives power from an engine (not shown) and transmits it to the transmission shaft 14 in 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 the support case 16.

Reaping pre-treatment mechanism 1 in this tip support case 16
The mounting structure of No. 7 will be explained. As shown in FIGS. 3 and 4, a sliding shaft 18 is supported with a bearing at the attachment part of the main frame 12 of the tip support case 16 so that it can slide in the direction of its own axis X in a posture along the width direction of the fuselage. At the same time, a passive bevel gear 19 is fixed to the hexagonal intermediate portion, and a drive bevel gear 20 is fixed to the tip of the main frame transmission shaft 14, thereby forming a transmission structure to the sliding shaft 18.
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 connected to the tip support case 19 via a bearing 21.
The shaft 18 is pivoted so as to be rotatable only, and is configured to allow the sliding shaft 18 to slide laterally. Bevel gear transmission mechanisms 22, 22 for supplying power to the lifting devices 2, 2 are provided at the left and right end portions of the sliding shaft 18 that protrude left and right from the tip support case 16, respectively.

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, and protrudes from the tip support case 16. Left and right support frames 25, 25 to which left and right weeding tool support rods are fixed are connected and fixed to the left and right ends. Furthermore, a second sliding frame 26 is installed further forward than the first sliding frame 23 and spans the left and right support frames 25, 25, and extends further forward from the front end of the support case 16. It is inserted into and loosely supported by the holder 27, which has a substantially U-shaped cross section, from the front opening side, and is configured to be able to slide laterally relative to the holder 27. Further, a central weeding tool support rod 32 extends forward from a supporting portion of the second sliding frame 26 that is engaged and supported by the holder 27.

Next, the lateral movement drive device of the reaping pretreatment mechanism 17 will be explained. As shown in FIG. 3, an endless screw shaft 28 is inserted horizontally into the tip support case 16, and
6. A piece member 2 that acts on the screw shaft 28 on the right side surface.
9 is provided. A drive motor 30 is attached to the base end of the right support frame 25 as a drive device which is transmission connected to the screw shaft 28 via a coupling 31 and rotates the screw shaft 28. The drive motor 30 rotates the screw shaft 28 to drive the tip support case 16 and the reaping pretreatment mechanism 1.
7 can be moved horizontally to the left and right.

Next, the handling depth adjustment device will be described in detail. Fifth
As shown in the figure, the vertical conveyance device 6 consists of a tip locking conveyance device 6A and a stock clamping conveyance device 6B,
A transmission shaft 33 for a vertical conveyance device, which is capable of vertically swinging around the axis of the horizontal transmission case 11 and is raised from the horizontal transmission case 11 and serves as a rear vertical support shaft.
It is possible to swing left and right about the axis P as a fulcrum P. A motor 34 with a worm reducer is attached to the main frame 12, and a bracket 35 is attached to the main frame 12.
The fan-shaped gear 36 is attached through the motor output shaft pinion 37 and the fan-shaped gear 36 are engaged with each other.
The fan-shaped gear 36 swings up and down around the horizontal axis Y, and the drive arm 39, which can swing together with the fan-shaped gear 36 at the horizontal axis Y position, is attached to the case 46 of the ear tip locking and conveying device 6A via the connecting rod 38. The vertical conveyance device 6 is configured to be able to swing vertically.

On the other hand, as shown in FIG. 6, a pair of upper and lower contact sensors 41 are mounted on a hanging frame 40 that is provided around the upper part of the conveyance path to suspend and support the clamping rail for the stock clamping and conveying device 6B. established,
It is configured as a culm length sensor for conveyed grain culms sent by the vertical conveyance device 6. In other words, the vertical conveying device 6 is vertically swung so that the tip of the grain culm to be transported passes exactly through the upper and lower intermediate positions of both contact sensors 41, and the clamping position of the stock clamping and conveying device 6B is fixed from the tip depending on the length of the grain culm. The handling depth can be controlled so that the length of insertion into the threshing device 5 becomes a set length.

Next, the left-right swing structure of the vertical conveyance device 6 will be explained.

A vertical transmission case 42 is fixed to the horizontal transmission case 11 to support the transmission shaft 33 for the vertical conveyance device, and a drive sprocket 43 for the stock clamping and conveyance device is provided at the vertical intermediate position of the transmission shaft 33, and a tip is provided at the upper end. Drive sprocket 4 for locking conveyance device
4 are fitted so that they can rotate together. The upper half of the vertical transmission case 42 has a wall surface only on the rear side of the transmission shaft 33 for the vertical conveyance device, and a rotating frame 45 that can swing left and right is located on the front side of the space. The frame 45 is supported by a bearing on the transmission shaft 33 for the vertical conveyance device.

With respect to this rotating frame 45, the ear tip locking and conveying device case 46 and the stock clamping and conveying device case 4 are connected to each other.
7 is provided, and both cases 46 and 47 are connected by an intermediate support frame 48, so that the ear tip locking and conveying device 6A and the plant head clamping and conveying device 6B are integrally configured to be able to swing left and right about the rear fulcrum P. It has been done.

On the other hand, as shown in FIG. 5, the lifting transmission cases 49, 49 for the lifting device 2 are erected on the left and right to move laterally integrally with the left and right support frames 25, 25, and the right side as a merging conveyance device is installed. A vertical support shaft 51, on which the conveyor belt 52 with a locking pawl and the right side packer 4A are rotatably loosely fitted, is supported by the right side lifting transmission case 49 via a cantilever 58. Further, the right side packer 4A receives rotational driving force through engagement with the left side packer 4B, and also drives a conveyor belt 52 with a locking claw connected to the right side packer 4A via a connected cylindrical case 53. It supplies rotational driving force to the pulley.

With the upper end of the right-hand lifting transmission case 49 welded to the bracket 54,
A hanging rod 55 serving as a linkage mechanism is attached through the transmission case 11, and its lower end is locked to a protrusion of the upper cover 56 of the conveyor belt 52 with a locking claw on the right side, and its position is regulated. It is formed in an arc shape centered on the rear horizontal support shaft 13. That is, as shown in FIG. 2 A and B, this hanging rod 55 is engaged in a state in which it passes through a locking bracket 57 extending from the ear locking and conveying device case 46 in the middle thereof, and the hanging rod 55 is engaged with the locking bracket 57 extending from the ear locking and conveying device case 46 before reaping. As the processing mechanism 17 moves horizontally, it moves horizontally as a unit, and the vertical conveyance device 6 is swung horizontally via the locking bracket 57. Therefore, the hanging rod 55 is connected to the vertical conveyance device 6.
As described above, the locking bracket 57 is formed into an arc shape to allow vertical swinging for controlling the handling depth, and the hanging rod 55 is attached to the locking bracket 57.
A hole 50 is formed therethrough, and the connecting rod 38 that swings the vertical conveyance device 6 up and down can also swing left and right along with the tip retainer conveyance base 39.

As shown in FIGS. 1A and 1B, a wrapping prevention rod 59 is provided above the left and right packers, which functions to prevent cut straw such as grain culms from getting entangled with the vertical support shaft 51, etc. The shape of this anti-wrapping rod 59 is formed as follows. As shown in FIG. 1A, the rear end of the anti-wrapping rod 59 is positioned opposite to the starting end of the vertical conveyance device 6 at the rearmost position, and the rear half of the anti-wrapping rod 59 is
As the vertical conveyance device 6 swings left and right around the rear support point P, as shown in FIG.
It is formed in a shape that follows the movement locus of the starting end of the vertical conveyance device moving to the frontmost position.

[Another example]

The merging conveyance device 4 may be a general term for both the packer and the conveyance belt with locking claws, and is not limited to these, and may be any other conveyance structure.

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 structure for a combine harvester according to the present invention, and FIGS. 2A and 2B are plan views showing the lateral movement interlocking state of the reaping pre-processing mechanism and the vertical conveyance device, FIG. 3 is a cross-sectional plan view showing the lateral movement structure of the reaping pre-processing mechanism, and FIG. 4 5 is a side view of the support frame, FIG. 5 is a side view showing a linkage mechanism between the handling depth adjustment mechanism and the lateral movement structure of the pre-reaping treatment mechanism, and FIG. 6 is an overall side view. 6...Vertical conveyance device, 4...Combined conveyance device, 9...
... Traveling machine body, 17 ... Reaping pretreatment mechanism, 59 ...
Anti-wrapping rod, P... Rear fulcrum.

Claims (1)

[Claims] 1 The reaping pre-processing mechanism 17 equipped with the merging conveyance device 4 that pulls up and reaps the harvested grain culms into the center of the cutting width and sends them out toward the starting end of the vertical conveyance device 6 can be moved laterally to the left and right with respect to the traveling machine body 9 At the same time,
In conjunction with the left and right movement of the reaping pre-processing mechanism 17, the vertical conveyance device 6 is attached so as to be swingable from side to side around the rear fulcrum P. Anti-wrapping rod 5
9 is positioned opposite to the starting end of the vertical conveyance device 6 at the rearmost position, and the anti-wrapping rod 59
A pre-reaping treatment structure for a combine harvester, in which the rear half of the vertical conveying device 6 is formed in a shape along a trajectory in which the starting end of the vertical conveying device moves from the rearmost position to the most forward position as the vertical conveying device 6 swings left and right.