JPS601568Y2 - reaping machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a reaping harvester.

When working with this reaping/harvesting machine, if the machine runs at high speed from the start of reaping when it enters the planted stem culm group,
Not only is there a risk of damage to various devices due to sudden loads being applied to them, but also the posture of the stem culms is likely to become disordered, making it difficult to perform smooth work. It is preferable to perform the reaping operation at low speed for a certain period of time until the stem culm is transported to the appropriate location on the transport path.

However, there is a risk that the operator may forget to switch to a low speed state at the start of reaping, and in recent years, operating tools that operate along a fixed straight path as a traveling transmission When a continuously variable transmission device that changes speed (for example, a hydraulic continuously variable transmission device) is used, not only is there a risk of forgetting the above operations, but it is also difficult to recognize the operation position of the operating tool, resulting in operational errors. There is also a risk that the desired low-speed running condition may not be achieved properly.

The present invention has been developed with the above-mentioned circumstances in mind, and in the reaping/harvesting machine having the structure described above, the traveling transmission device is prevented from being operated to a high speed range at least for a certain period of time from the start of reaping. Since the machine is characterized by being equipped with a mechanism that prevents the mowing machine from starting the reaping operation before the machine is running at high speed,
In other words, at least for a certain period of time after the start of reaping, it is possible to run at a low speed accurately, thereby eliminating the forgetting of operations and operational errors mentioned above, and performing smooth and good reaping work. became possible.

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

The figure shows a device 3 for raising multiple rows of planted stem culms into an upright position at the front of the machine, which consists of a crawler traveling device 1, a threshing device 2, etc.
, a reaping device 4 that cuts the base end of the pulled stem culm, an auxiliary conveyance device 5 that conveys the cut stem culm to the rear while merging it, and a device 6 that vertically conveys the cut stem culm toward the rear threshing device 2, etc. This shows a combine harvester that is connected and equipped with a reaping section consisting of:

The threshing device 2 is configured to handle and thresh the stem culm delivered from the vertical conveyance device 6 while holding and conveying it with a feed chain 7 installed on the horizontal side,
The structure is such that the treated waste straw is sent to a rear disk-shaped waste straw cutter 9 by a waste straw chain 8 and shredded.

The crawler traveling device 1 is driven by an output from a hydraulic continuously variable transmission device 11 that is interlocked with an installed engine 10 and a belt, and this transmission device 11 is operated to change speed as described below. The vehicle is configured so that the traveling speed is changed and adjusted as the vehicle progresses.

That is, the swing operation arm 11a of the transmission 11 and the swing operation lever 13 disposed near the control seat 12 provided on the machine are interlocked and connected via a link mechanism 14, and the lever 13 is in the neutral position. It is configured such that the more the vehicle is operated forward from the position N, the higher the speed of forward motion becomes, and the more the vehicle is operated backward from the neutral position N, the higher the speed of backward motion becomes.

Incidentally, a fan 16 is attached to the input shaft 15 of the continuously variable transmission 11, and the fan 16 is attached to the input shaft 15 of the continuously variable transmission 11.
7 is configured to be cooled by air from a fan 16.

The reaping section is supported by an elevating frame 18 that is connected to the machine so as to be able to rise and fall freely, and is configured such that the elevating frame 18 is driven up and down by a hydraulic cylinder 19.

As shown in FIG. 4, the combine harvester constructed as described above is normally used for circular mowing work.

In other words, after performing the reaping work while traveling straight [7], the reaping work will be performed after turning to the left at the headland area A and A and proceeding to rush into the next row of planted culms, and,
In headland areas A and A, the reaping part will be raised high above the ground so as not to touch the ground.

In addition, at the initial stage of entering the stem culm group, it is preferable to travel at a low speed so as not to apply sudden loads to various devices, and to ensure this, the following check mechanism is provided. ing.

That is, a normally closed electric switch 20 is provided which is pressed by the stem culm and opens when the stem culm is conveyed by the foot chain 7, and the reaping section is lowered to the height position for reaping. A normally open electric switch 21 is provided which is pressed by the elevating frame 18 to be in a closed state.

Further, an electromagnetic solenoid 22 is arranged opposite to the operating lever 13.
is provided.

The solenoid 22 projects the retractable rod 22a only while it is energized, and intercepts and prevents the lever 13 from being operated to a high speed range above a certain value.
It is configured to prevent the vehicle from being operated to a high speed range exceeding a certain value.

Both electric switches 20 and 21 are connected in series to the solenoid 22, and both switches 20 and 21 are connected in series.
．． 21 is closed to prevent a high-speed state from occurring.

Therefore, when the reaping unit is lowered to the reaping height to start reaping work, both switches 20 and 21 are closed, which energizes the solenoid 22 to check and prevent high-speed running. After that, when the cutting progresses to an appropriate point, the stem culm is delivered to the foot chain 7 and the switch 20 is turned on.
Since the brake is opened and the restraint is released, the operator uses the lever 13 to change the gear to a desired high-speed running state.

In addition, in the headland area A, as described above (the reaping section is raised and the restraint is released, the operator can select an appropriate running speed).

In implementing the present proposal, the point at which the stem culm needs to be restrained from the start of reaping until it is transported varies depending on the growing state of the stem culm and the humidity level.For example, in the case of the example, An electric switch similar to the switch 20 is provided not only in the foot chain 7 but also in the vertical conveyance device 6 and the straw removal chain 8, so that it can be selectively used depending on the situation of the stem culm. It is more convenient to do so, and in general, when reaping under heavy loads, it is better to perform the reaping operation at low speed for a sufficiently long period of time.

In addition, in carrying out the present invention, it is not only necessary to directly detect the transport position of the stem culm as in the embodiment, but also to use a timer device to detect the transport position of the stem culm at an appropriate time from the time when the reaping section is lowered to start reaping. It may be implemented in a form in which only time is checked, and in this case as well, it is preferable to configure the setting time of the timer device to be freely adjustable.

Furthermore, the present invention may be implemented by incorporating a drive mechanism that automatically changes speed to a high speed state when the action of the check mechanism is released.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the reaping harvester according to the present invention,
FIG. 1 is a side view of the combine harvester, FIG. 2 is a schematic diagram showing a speed change operation structure, FIG. 3 is an interlocking diagram, and FIG. 4 is a diagram showing a traveling mode. 11...Traveling transmission, 13...Operation tool.

Claims (1)

[Claims for Utility Model Registration] ■ A reaping harvester characterized by being provided with a mechanism that prevents the traveling transmission 11 from being operated to a high speed range at least for a certain period of time from the start of reaping. (2) The reaping and harvesting machine according to claim 1, wherein the certain period of time is the time required for the reaped stem culm to be conveyed to an appropriate position on the stem culm processing conveyance path. ■ The traveling transmission 11 is a continuously variable transmission whose speed is changed by an operating tool 13 that is reciprocated along a fixed straight path. The reaping harvester described in paragraph 2.