JPH0117962Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a harvested grain culm conveying device in a combine harvester that can adjust the handling depth to the threshing section appropriately by changing the gripping position of the grain culm depending on the length of the grain culm. Regarding.

When changing the holding position of the grain culm after harvesting,
There is a configuration in which the starting end of the conveyance device is vertically displaced relative to the reaping device, but conventionally, when moving the conveyance device vertically, this type of conveyance is carried out in two stages, upper and lower, on the plant base side. The distance between the device and the tip-side conveying device remained unchanged, and the device was configured to move up and down integrally while maintaining a constant relationship.

In contrast, the present invention attempts to change the distance between the two in relation to the vertical displacement. In other words, when displacing the upper and lower two conveying devices upward, since it is a long culm, the gap between both conveying devices is widened, and when displacing it downward, since it is a short culm, both By narrowing the gap between the grains in the direction of closing, this allows the grain culms to be handed over properly after harvesting, regardless of the length of the grain culms, and to ensure subsequent transportation in a stable posture in an orderly and reliable manner. It is something that can be done.

The present invention will be explained below based on one embodiment shown in the drawings. A is a 4-row combine harvester, and the front part of the machine body is equipped with pulling devices 1 and 2 and a reaping device 3. A threshing section 5 having a feed chain 4 on one side is mounted at the rear. Also,
A pair of raking devices 6, 6' and 7, 7' are disposed at the upper rear side of the reaping device 3, and are opposed to each other at portions corresponding to the rear of the lifting devices 1 and 2.

Between the reaping device 3 and the threshing section 5, there are stock head side conveying devices 9, 9' for individually pinching and conveying the harvested grain culm base parts, merging them at the terminal end, and conveying them all at once. The left and right stock head side conveying devices 9, 9' are composed of a conveying chain and a clamping rod that clamp the stock head part, and one stock head side conveying device 9 is provided with the above-mentioned scraping devices 6, 6'. The other stock side transport device 9' is arranged opposite to the scraping devices 7, 7', and the transport end sides of each stock stock side transport device 9, 9' are located at the center of each other when viewed from the plane. They are inclined toward each other and merge to form a collective conveyance path between these opposing conveyance surfaces, and the terminal end thereof is connected to the start end of the transfer conveyance device 10 which is successively positioned near the start end of the feed chain 4. It is in a temporary position. These left and right stock side transport devices 9, 9' are integrally constructed as a frame, and
It is configured to be able to move vertically and fixedly around a fulcrum axis P centering on the middle part, and when the starting end side is changed in position in the vertical direction with respect to the reaping device 3, the terminal end side is moved relative to the transfer conveyance device 10. The position of the threshing section 5 is changed in the distance direction, and the depth at which the grain culm is handled by the threshing section 5 can be freely changed.

Above the stock side conveyance devices 9, 9', there are provided ear side conveyance devices 11, 11' that engage and convey the ear side of the grain culm in correspondence with these conveyance routes. The devices 11, 11' and the transfer conveyance device 10 are integrally constructed in the same manner as the stock side conveyance device, and the tip side conveyance devices 11, 11' swing around a support shaft 12. It is configured to be mounted and supported by a displacing link 13 so as to be able to move up and down. A telescopic adjustment rod 16 is provided which can extend and retract the arm 14 for swinging the link 13 and the arm 15 for swinging the stock side transport device 9, 9' around the fulcrum axis p. By connecting them with each other, when the starting end sides of the plant head side conveying devices 9, 9' are upwardly displaced with respect to the reaping device 3, the tip side conveying devices 11, 11'
is upwardly displaced in relation to this, and at the same time is expanded and displaced in the direction in which the distance from the stock head side conveyor device 9, 9' is widened.Conversely, when the starting end side of the stock head side conveyor device is downwardly displaced, the tip of the ear The side conveyance devices 11, 11' are configured to move downward accordingly, and at the same time to be reduced and displaced in a direction in which the distance between them becomes narrower.

In addition, in the embodiment, the stock side conveyance devices 9, 9' and the ear side conveyance devices 11, 11' are maintained in a substantially parallel state, and are interlocked to widen or narrow the distance between them. However, by adjusting the telescopic adjustment rod 16, both conveying devices can be held in a non-parallel state, for example, a state in which a predetermined angle is maintained such that the gap between the two is wide at the terminal end and narrow at the starting end. It is constructed in such a way that it can be made wider or narrower.

Therefore, according to the above configuration, when the grain culm is a short culm, the relationship between the plant head side conveying devices 9, 9' and the ear side conveying devices 11, 11' is as shown in FIG. 1, for example. The distance M between the two is narrow and close to each other, and the conveyance start end is located close to the reaping device 3.

Therefore, when the grain culm is a long culm, in order to change the gripping position of the grain culm, the stock side conveyor devices 9, 9' are
The fulcrum shaft p is the center of rotation, and the tip side conveying devices 11 and 11' are upwardly displaced in the direction away from the reaping device 3, as shown by the imaginary line in FIG. 2 (FIG. 3). In conjunction with this, the culm is displaced upward, and the distance L between the two is expanded to be wider than the distance M when the culm is short.

Therefore, when the grain culms after being raised are cut and transferred to the starting ends of the stock head side transport devices 9, 9' and the ear side transport devices 11, 11', the holding position on the stock head side shifts to the upper part. Therefore, the distance from the clamping position to the tip is shortened, and the tip can be supplied to the optimum position in the handling chamber. At this time, the tip side conveying device 1
1 and 11' are upwardly displaced to a greater extent than the stock base side, and the distance between them is widened, so that the grain culms can be engaged and transported in a stable manner.

In addition, in the case of short culms, since the distance between the two is narrower, the engagement position of the tip-side conveying device shifts to the plant base side, ensuring that the optimal position on the tip side is engaged regardless of the short culm. It can be held together and transported stably.

In short, according to the present invention, since the upper and lower conveying devices are arranged in an interlocking manner so that the distance between the two conveying devices increases as the upper and lower conveying devices move upward relative to the reaping device, it is possible to adjust the handling depth. Even though the grain culm holding position can be changed arbitrarily, regardless of the length of the grain culm, it is always engaged and held in the optimal position to transport it in a stable and orderly manner, and the grain culm can be transferred smoothly after harvesting. There are features that can be achieved.

[Brief explanation of drawings]

The figures show one embodiment of this invention, and FIGS. 1 to 3 are side views of the main parts of the combine, and FIG. 4 is a plan view of a part thereof. 3 is a reaping device, 9, 9' is a stock transfer device, 1
Reference numerals 1 and 11' indicate the tip side conveying device.

Claims (1)

[Scope of utility model registration request] A stock side conveyor device and a head side conveyor device that vertically convey harvested grain culms toward the rear threshing section are installed in two upper and lower stages. What is claimed is: 1. A harvested grain culm conveying device for a combine harvester, characterized in that the harvested grain culm conveying device is configured to be able to change its position in the vertical direction, and is configured to interlock with the reaping device so that a gap between the two is widened when the device is moved upwardly relative to the reaping device.