JPH02171111A - combine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is for threshing harvested grain culms from a reaping and conveying device driven in synchronization with the traveling speed by a feed chain driven at a substantially fixed speed. The present invention relates to a combine harvester having a conveyance system for supplying equipment, and specifically relates to a technique for smoothly delivering harvested grain culms from a harvesting conveyance device to a feed chain.

[Conventional technology]

As mentioned above, as a technique for smoothly transferring the harvested grain culm from the harvesting conveyance device to the feed chain,
There is a device disclosed in Japanese Patent Application Laid-Open No. 53-54535, and in this reference, an intermediate conveying device is arranged between the reaping conveying device and the feed chain, and the driving speed of this intermediate conveying device is set to be different from that of the reaping conveying device. By coordinating in synchronization, it is configured to suppress the disturbance of the posture of the harvested grain culm from the harvesting and conveying device regardless of changes in the traveling speed of the vehicle body.

[Problem to be solved by the invention]

However, if we consider the case where the harvesting operation is carried out by significantly reducing the traveling speed of the harvester, such as when harvesting grain culms that are in a lodging state,
In the grain culm conveyance system of the above reference, the drive speed of the intermediate conveyance device also decreases significantly in conjunction with the traveling speed, so the reaped grain culm is received and transferred between the harvested grain culm conveyance device and the intermediate conveyance device in a good manner. On the other hand, the difference in the conveying speed between the intermediate conveying device and the feed chain becomes large, so even though the intermediate conveying device is provided, the harvested grain culm is sent to the feed chain via the intermediate conveying device. It may also cause disturbances in posture.

An object of the present invention is to configure, through rational modification, a conveyance system in which the conveyance posture of the harvested grain culm sent from the harvesting conveyance device to the feed chain is unlikely to be disturbed even if the traveling speed is significantly reduced.

[Means to solve the problem]

A feature of the present invention is that, as described above, in a combine that has a reaping conveyance device that synchronizes with the traveling speed and a feed chain that is driven at a substantially fixed speed, an intermediate conveying device is disposed between the reaping conveyance device and the feed chain. At the same time, when the traveling speed is below a predetermined value, the intermediate conveying device is driven at an intermediate speed between that of the feed chain and the reaping conveying device, and when the traveling speed is above a predetermined value, the driving speed of the intermediate conveying device is set to a speed between the feed chain and the reaping conveying device. The present invention has a drive means that is driven at an intermediate drive speed and at a speed that is synchronized with the reaping and conveying device, and its functions and effects are as follows.

[For production]

If the above characteristics are configured as shown in FIG. 1, for example, when the traveling speed is significantly reduced, the intermediate conveyance device (13)
Since it can be driven at an intermediate drive speed between the reaping conveyance device (6) and the feed chain (9), the speed difference between the intermediate conveyance device (13) and the feed chain (9) increases as in the cited example. This phenomenon can be suppressed, and the speed difference between the reaping conveyance device (6) and the intermediate conveyance device (13) can be suppressed.
) can be set to the same degree as the speed difference between

Furthermore, when traveling at a higher speed than a predetermined traveling speed, the intermediate conveyance device (13) is driven in synchronization with the traveling speed, so that
By appropriately setting the synchronized speed of the intermediate conveying device (13) with respect to the reaping conveying device (6), the reaping conveying device (
6) and the intermediate conveyance device (13) can be set small, and the speed difference between the intermediate conveyance device (13) and the feed chain (9) can be further reduced.

〔Effect of the invention〕

Therefore, even if the traveling speed is significantly reduced by modifying the intermediate conveying device by providing a drive means for switching the drive mode as described above, the conveying posture of the harvested grain culms sent from the reaping conveying device to the feed chain will be disturbed. A difficult conveyance system was constructed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

As shown in Figure 2, a pair of left and right crawler traveling devices (1
), a plurality of lifting devices (3
), a clipper-type reaping device (4), and a reaping conveyance device (6) for transporting reaped grain culms (5) are connected to each other in a vertically movable manner. A combine harvester is constructed by mounting a threshing device (7) to which culms (5) are supplied on a vehicle body (2).

As shown in FIGS. 1 and 2, the crawler traveling bag!
(1) is configured so that power is transmitted from a transmission case (8) placed at the front central position of the vehicle body (2), and the reaping pre-processing section including the reaping conveyance device (6) etc. A transmission system is formed so that power is transmitted through the case (8), so that the vehicle is driven in synchronization with the traveling speed.

The threshing device (7) also has a handling cylinder (7a) that is driven and rotated around a longitudinal axis, and a feed chain (7a) that supplies the reaped grain culm to the handling cylinder (7a) in a sideways posture. 9), the feed chain (9) includes a transmission case (11) for transmitting power from the engine (10) to the sorting section (not shown) of the threshing device (7), and a speed reducer. It is configured to be driven at a substantially fixed speed by being transmitted through each case (12).

In this combine, in order to smoothly transfer the reaped grain culm (5) from the reaping transport device (6) to the feed chain (9), a transport chain type is used between the reaping transport device (6) and the feed chain (9). A pair of intermediate conveying devices (13) are provided, and when the traveling speed of the vehicle body (2) is below a predetermined value, the intermediate conveying device (13)
and the reaping conveyor (6) at an intermediate speed.
is driven by the power from the deceleration case (12) to convey the The transmission case (
8) is transmitted via the transmission path (14).

To explain in detail, the feed chain (9) has a deceleration case (
Power is transmitted through the first sprocket (15) provided at the feed chain (9), and when the running speed of the vehicle body (2) is below a predetermined value, The power from the second sprocket) (16) is transmitted via the one-way clutch (17), the rotating shaft (18), and a pair of small-diameter third sprockets) (19) and (19) to the intermediate conveyor system?
! ffi (13), (13), and when the traveling speed of the vehicle body (2) reaches a predetermined value or higher, the clutch (20) interposed in the transmission path (14) is engaged and operated. By transmitting power to the rotation shaft (18),
The intermediate conveying device (13) is driven at a speed higher than the speed transmitted via the feed chain (9) and at a speed that is synchronized with the traveling speed.

Incidentally, the one-way clutch (17) is the clutch (20).
When the power is transmitted to the rotating shaft (18), the transmission direction is set so as to allow the rotating wheel (18) to rotate at a higher speed than the rotating speed of the second sprocket (16).

And the transmission system from the feed chain (9) to the rotating wheel (18), and the rotating shaft (18) from the clutch (20).
The transmission system leading to the above is collectively referred to as the drive means (A).

As shown in FIG. 3, the reaping device (4) includes a receiving blade (4a) fixedly installed on the side of the reaping pre-processing section, and a receiving blade (4a).
The cutting blade (4b) is supported so as to be slidable against the cutting blade (4b), and a driving member (21) having a vJ-shaped engagement recess (21a) is attached to the side of the cutting blade (4b). , a swinging arm (
23) at the tip of the roller (24) into the recess (21a).
By doing so, the arc motion of the swing arm (23) is converted into a reciprocating linear motion of the cutting blade (4b).

[Another Embodiment] In addition to the above-mentioned embodiments, the present invention may also include, for example, the intermediate conveyance device may be configured with a single conveyance chain or a conveyance belt.
Furthermore, in order to transmit power to the intermediate conveyance device, various implementations are possible, such as a special transmission device being provided in the drive means, and a control device for switching the transmission path being provided.

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 combine harvester according to the present invention, FIG. 1 is a schematic diagram showing the transmission structure of the conveyance system, FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view of the drive structure of the reaping device. be. (5)... Reaping grain culm, (6)... Reaping conveyance device, (7)... Threshing device, (9)...
... Feed chain, (13) ... Intermediate conveyance device, (A) ... Drive means.

Claims (1)

[Claims] A conveyance system that supplies harvested grain culms (5) from a reaping conveyance device (6) driven in synchronization with the traveling speed to a threshing device (7) by a driven feed chain (9) at a substantially fixed speed. A combine harvester comprising: an intermediate conveying device (13) disposed between the reaping conveying device (6) and the feed chain (9);
13) is driven at an intermediate speed between the feed chain (9) and the reaping transport device (6) when the traveling speed is below a predetermined value, and when the traveling speed is above the predetermined value, the feed chain (9) and the reaping conveyor are driven at an intermediate speed. At an intermediate drive speed with the conveying device (6),
A combine harvester further comprising a drive means (A) driven at a speed synchronized with the reaping and conveying device (6).