JPH048742Y2 - - Google Patents

Description

[Detailed description of the invention] This invention merges multiple rows of harvested grain culms in the middle of the cutting width, supports the merged grain culms with a stock head clamping conveyance device and a head end locking conveyance device, and conveys them rearward and upward. The threshing feed chain is then fed to the threshing feed chain in a sideways posture with the ears laid down inside the machine, and the stock head clamping and conveying device and the ear locking and conveying device are vertically oscillated around a fulcrum near the front of the threshing device. The present invention relates to a combine harvester configured to dynamically adjust handling depth.

Conventionally, as this type of combine harvester,
As shown in No. 16618, a locking and conveying device for ear merging is disposed opposite to the front part of the ear tip locking and conveying device, and this locking and conveying device for ear merging is integrated with the top and bottom conveying device. configure it to work,
A method has been proposed in which the tip side of the grain culm can be appropriately locked and merged and conveyed regardless of whether the culm is long or short.

In this case, the main ear tip locking and conveying device is configured to receive mechanical power via the vertically swinging shaft at the end of conveyance, as in the past, whereas the main ear tip locking and conveying device was configured to receive power from the tip-locking conveyance device through a mechanical transmission system that detoured above the conveyance path.

Specifically, both locking conveyance devices are connected by a portal frame made of pipe that straddles the conveyance route, and
The structure was such that the transmission shaft passed through the pipes that made up this frame.

However, the shaft transmission structure that passes through the inside of the portal frame requires bevel gear transmission at two bends, which makes the transmission structure complicated, and the portal frame itself has a large diameter through which the transmission shaft passes. It was large and heavy, with pipes connected through a bevel gear case.

The present invention has been made with attention to these points, and is an attempt to alleviate the above-mentioned problems by improving the drive structure of the locking and conveying device for merging the ears.

The characteristic structure of the present invention to achieve the above purpose is as follows:
An ear merging locking and conveying device driven by a motor is provided on the opposite side of the front portion of the ear tip locking and conveying device. The point is that it is configured to move.

According to the above configuration, it is driven independently of the ear tip merging locking and conveying device, and a mechanical transmission structure from the ear tip locking and conveying device is not required.

Therefore, the gate-shaped frame that connects the ear-end retaining conveyance device and the ear-merging retaining conveyor device can be made of a lightweight and simple structure such as a small-diameter pipe bent into an inverted U-shape. The weight of the entire device, which is swung up and down to adjust the depth, has been reduced even considering the increase in the number of drive motors, making it easier to perform depth adjustment operations.

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, three lifting devices 1 in backward inclined positions are arranged with two of them facing each other, and the opposing lifting devices 1,
1 pulls up two rows of grain culms, another pulling device 1 pulls up one row of grain culms, and a reaping device 2 that reaps the pulled grain culms; A chain conveying device 3 with protrusions 3, 3 and a large diameter gear type scraping device 4 at the rear end are used to merge the width in the middle.
4 are arranged side by side, and this combined grain culm is transferred to the stock holding and conveying device 5.
The grains are supported by the ear locking and conveying device 6 and transported rearward and upward, and are fed to the threshing feed chain 8 in a sideways posture with the ear tip lying down inside the machine by the guidance of the ear guide rod 7. In addition, a reaping pre-processing section 10 is configured to adjust the handling depth by vertically swinging the stock head clamping and conveying device 5 and the ear end locking and conveying device 6 about a fulcrum P near the front of the threshing device 9. Configure a combine with

A locking and conveying device 11 for merging ears, which faces the front part of the ear tip locking and conveying device 6 in a V-shape that expands forward, is extended from the ear tip locking and conveying device 6, bypassing the grain culm conveying path. It is attached and fixed to the taken-out support frame 12 and configured to move up and down integrally with the ear tip locking and conveying device 6, so that the ear tip portion can be appropriately locked regardless of the length of the harvested grain culm. I can do it.

The locking and conveying device 11 for joining the ears has a chain 41 wound around the drive sprocket 39 and the idler sprocket 40, and a plurality of locking pawls 42 protruding from the chain 41.
By the drive motor 43 provided on the 2-mounting part,
It is configured to be able to be conveyed by locking the tip.

To explain the pulling device 1 in detail based on FIGS. 2 to 6, transmission cases 22, 22, 22 extend from the horizontal transmission case 21 of the reaping device 2 toward the pulling devices 1, 1, 1, respectively. The transmission cases 22, 22, 22 are arranged such that the middle one thereof is inclined laterally in a plan view, and the cases 27, 27, 27 are interlocked and erected by being raised at the tips of each of the transmission cases 22, 22, 22, A chain 25 driving sprocket 26 with a lifting locking pawl 24 attached and fixed to the tip of the transmission shaft 23 housed in the transmission case 22 is fitted, and a tension sprocket provided at the upper part of the lifting case 27 is attached. 28 and chain 25
is being wound around. Said tension sprocket 2
8 is supported at the tip of a swingable arm 36, and a spring 37 is provided to bias the arm 36 toward the tension side of the chain 25.
The protruding piece 36A protruding from the lifting case 27 and the round rod-shaped receiving member 38 protruding through the elongated hole 27A provided on the side of the lifting case 27 are provided in abutting state, and by this abutting action, The chain 25 is configured to be adjustable to the tight side while limiting its loosening.

By providing the drive sprocket 26 at the lower end as described above, the transmission case does not need to be raised to the upper end, which simplifies the structure and reduces costs. Can be configured to double as a transport guide.

Grain culm lifting locking claws 29 are made to protrude forward at two locations, one between the opposing lifting devices 1 and 1 and on the outside of the other lifting device 1, and at a forward position. Forced weeding devices 30, 30 are arranged, and a drive sprocket 3 is attached to each forced weeding device 30, 30.
1 and 31 are pivotally supported at the upper ends, and the upper ends of each of the weeding devices 30 and 30 are connected by a transmission case 32, so that the outer weeding device 30 and the other pulling device 1 can be connected to each other. The wheel shaft 3 provided on the lower driving side of the tension sprocket 28 of the tensioning device 1
3 and the drive sprocket shaft 34 of the weeding device 30, power is transmitted through a bevel gear 35.

Therefore, the forcible weeding device 30 can prevent the weeds from becoming entangled with the grain culms, and the load on the weeding device 1 can be reduced.

A weeding tool 13 is provided at the front of the pulling device 1, and the weeding tool 13 is supported by a pin 16 at its proximal end with respect to a support rod 14, and its distal end is supported by an internal plate-shaped The member 15 is connected with a pin through a long hole 15A provided in the member 15 so as to be able to swing in the horizontal direction, and the weeding tool 13 is held in a neutral position between the support rod 14 and the weeding tool 13. Spring 1
7 and 17 are stretched so as to be able to swing from side to side in response to the load during weeding, thereby preventing the grain from being pushed down onto the grain culm.

As shown in FIG. 8, another embodiment of the weeding tool 13 is shown.

The weeding tool 13 is supported by a pin 16 at its proximal end on the support rod 14, and the distal end is connected with a pin through a long hole 15A provided in an internal plate member 15. In addition to being configured to be able to swing in the horizontal direction, springs 20, 20 are tensioned between the vertical pieces 18, 18 and 19 which are respectively erected from the two pieces 13 and 14 to maintain a neutral posture, thereby reducing the load during weeding. It may be configured to be able to swing left and right in response to the above.

[Brief explanation of drawings]

The drawings show an embodiment of the combine harvester according to the present invention, and FIG. 1 is a side view of the pre-harvesting section of the combine;
Figure 2 is an enlarged plan view of the main parts of Figure 1, Figure 3 is a drive system diagram of the pulling device and forced weeding device, Figure 4 is a front view of the pulling device and forced weeding device, and Figure 5 6 is an enlarged rear view of the main parts of the pulling device, FIG. 7 is a plan view of the weeding tool,
FIG. 8 is a plan view showing another embodiment of the weeding tool. 5... Stock head clamping and conveying device, 6... Ear tip pinching and conveying device, 8... Threshing feed chain, 9... Threshing device, 11... Ear tip merging locking and conveying device, 43...
…motor.

Claims (1)

[Scope of utility model registration request] A plurality of reaped grain culms are merged in the middle of the cutting width, and the merging grain culms are supported by the stock head clamping and conveying device 5 and the ear locking and conveying device 6 and conveyed rearward and upward, and the ears are moved inside the machine. The grain is fed to the threshing feed chain 8 in a horizontally fallen position, and the stock head clamping and conveying device 5 and the ear locking and conveying device 6 are vertically oscillated about a fulcrum P near the front of the threshing device 9. The combine harvester is configured to adjust the handling depth by using a handle, and is provided with a locking and conveying device 11 for merging ears driven by a motor 43 on the opposite side of the front portion of the head locking and conveying device 6. Retaining and conveying device 1 for merging the tips of the ears
1 is configured to move up and down integrally with the ear tip locking and conveying device 6.