JPS5848136B2 - Automatic handling depth adjustment device for combine harvesters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic handling depth adjustment device for a combine harvester.

In the automatic handling depth adjustment device of this type of combine harvester, during the conveyance path of the harvested grain culm from the reaping section to the threshing section,
A culm length detection system for detecting the length of the harvested grain culm is provided by installing a stock support carrier for changing the inheritance position of the harvested grain culm in the threshing section, and an operating mechanism of the stock stock support transport body is provided in the conveyance path. Those configured to be automatically adjustable by a mechanism are already known.

However, in the conventional automatic handling depth adjustment device that uses only a culm height detection mechanism, the culm height detection mechanism is not energized even when the machine is turning to temporarily interrupt reaping and threshing work unless the power is turned off. Therefore, when the machine is turning, there is no grain culm to be detected by the culm height detection mechanism in the conveyance path from the reaping section to the threshing section, causing the culm height detection mechanism to malfunction, and the harvesting performed after turning. There is a drawback that the initial handling depth of the grain culms is not properly carried out.

The present invention has been devised in view of the above-mentioned actual situation of the conventional device and to eliminate the drawbacks thereof, and includes an operating mechanism of a stock support conveyor that can be automatically adjusted by a culm height detection mechanism.
By controlling an operation detection mechanism that activates when grain culms are present in the conveyance path and stops when there is no harvested grain culm, automatic control can be achieved from confirmation of the presence of harvested grain culms being conveyed by the stock support carrier. The object of the present invention is to provide an automatic handling depth adjustment device for a combine harvester that can shorten the time taken to reach the depth.

To explain one embodiment of the structure of the present invention shown in the drawings, 1 is a main frame of a combine harvester, and a reaping section 2 is disposed at the front of the main frame 1, and a reaping section 2 is disposed at the rear of the reaping section 2. A threshing section 3 is installed.

Reference numeral 4 denotes a cutting blade of the cutting section 2, which is provided horizontally above the ground.

Reference numeral 5 denotes a cutting culm lateral conveying body installed directly above the cutting blade 4, and from above the lateral conveying end position of this cutting culm lateral conveying body 5 toward the rear upper threshing section 3 in the machine traveling direction. A conveying body 6 for holding and carrying grain stalks along the grain culm is installed in an inclined manner so as to be vertically tiltable about a pivot shaft 7.

Further, above the stock head supporting conveyor 6, a stem conveyor 8 is installed substantially parallel to the stock head holding conveyor 6, and the terminal end thereof extends rearward longer than the terminal end of the stock head holding vertical conveyor 6.

Reference numeral 9 denotes a grain culm automatic feeding device of the threshing section 3, and between the starting end of this grain culm automatic feeding device 9 and the terminal end of the stock head supporting conveyor 6, a grain culm supply conveying body 10 is installed in the front-rear direction and It is constructed almost horizontally.

On the other hand, reference numeral 11 denotes a drive mechanism for vertically adjusting the tilting of the stock holding and conveying body 6, and this drive mechanism 11 has a movable body 13 screwed into a vertical screw rod 12 that reciprocates. The upper part of the screw rod 12 is connected to a drive motor 14.

Then, the movable body 13 and the stock support carrier 6 are
They are interlocked and connected by a connecting arm 15.

Further, 16 is a culm height detection mechanism of the grain culm, and this culm height detection mechanism 16 corresponds to the terminal end of the stock support carrier 6.
It is fixed to the cover plate 17 of the stem conveyor 8 located above it.

The culm height detection mechanism 16 includes a photoelectric element 18 for detecting the length and shortness of the harvested grain culm transported by the stock support carrier 6.
19 are disposed above and below at a predetermined interval, and light sources 20 and 21 are disposed opposite to these photoelectric elements 18 and 19 across the movement path of the grain culm.

Reference numeral 22 denotes an operation detection mechanism for detecting the presence or absence of the reaped grain culm being conveyed by the stock clamping conveyance body 6, and this operation detection mechanism 22 is located near the upper side of the culm height detection mechanism 16.
A photoelectric element 23 and a light source 24 are arranged opposite to each other across the movement path of the grain culm.

In the figure, reference numeral 25 denotes a light-shielding cover for the culm height detection mechanism 16 and operation detection mechanism 22, and this light-shielding cover 25 allows external light to be transmitted to each of the photoelectric elements 18, 19, and 23 of both detection mechanisms 16 and 22. This prevents the occurrence of malfunctions by blocking the incidence of light.

26 is an operation control device, and this operation control device 26 includes photoelectric elements 1B, 19, 23, light sources 20, 21 of the culm height detection mechanism 16 and the operation detection mechanism 22, as shown in FIG.
．． 24 are connected to each other, and furthermore, the drive motor 1
It connects 4.

Therefore, the drive motor 14 of the actuation mechanism 11 enters the operation mode upon receiving an operation command signal from the photoelectric element 23 of the operation detection mechanism 22, and also receives an operation command signal from the photoelectric element 18 or 19 for detecting the culm height of the culm height detection mechanism 16. In response to the signal, the drive motor 14 controls the operating mechanism 11 to rotate in the forward and reverse directions, and adjusts the clamping position of the reaped grain culm from the grain culm clamping conveyor 6 to the grain culm supply transfer body 10 in the direction of the culm. By changing the transfer position of the harvested grain culm to the grain culm supply and transfer body 10 on the threshing part 2 side, the grain culm tip position relative to the threshing part 2 is maintained constant.

In addition, 27 is a grain culm raising body of the reaping part 2, 28 is a track traveling device, 29 is a driving operation panel, and 30 is a driver's seat.

Next, the operation of the present invention constructed as described above will be explained.

First, as the machine moves forward, the harvested grain culm is cut by the cutting blade 4 of the reaping section 2, and is transported to one side of the machine by the cutting culm lateral conveyor 5, and then transferred to the stock clamping conveyor 6. is held, and the stem is conveyed toward the rear while exhibiting a substantially upright state in which the stem is loosely supported by the stem conveyor 8.

Then, the stalk of the harvested grain culm is transferred from the terminal end of the grain support carrier 6 to the start end of the grain culm supply conveyor 10, and then conveyed forward while being held by the grain culm supply conveyor 10. At the same time, the stalk part of the grain culm is conveyed further backward from the terminal end to the starting end side of the grain culm automatic feeding device 9 of the threshing section 3, so that the reaped grain culm becomes approximately horizontal. After the ears are transformed and come to line up with the grain supply port of the threshing section 3, they are sequentially threshed in the handling room of the threshing section 2 as the grain culm automatic supply device 9 transports the grain to the stock. .

By the way, if there is a grain culm being conveyed by the stock clamping conveyor 6 and the stem conveyor 8, this grain culm will be detected by the motion detection mechanism 22.
Therefore, the drive motor 14 is put into operation mode via the operation control device 26.

Then, the tip of the grain culm that is further transported is detected by the culm height detection mechanism 1.
If the photoelectric element 19 that detects the short limit of 6 is not reached or the photoelectric element 18 that detects the long limit of 6 is not reached, the detection signal of the culm height detection mechanism 16 is activated via the operation detection device 26. The actuating mechanism 11 in which the drive motor 14 rotates in the forward or reverse direction moves the stock clamping conveyor 6 so that the tip of the harvested grain culm is located within the opposing interval of the photoelectric elements 18 and 19 in the culm direction. Since automatic adjustment is performed by tilting around the axis 7, the starting end of the grain culm automatic feeding device 9 of the threshing section 3 is transferred from the terminal end of the stock supporting conveyor 6 via the grain culm supply relay body 10. Regardless of its length, the grain culm transferred to the threshing section 3 must maintain a culm length within a certain range from the supporting point to the ear tip, and the culm length of the grain culm inserted into the handling chamber of the threshing section 3 should be kept constant. I can do it.

At this time, since the motion detection mechanism 22 is provided near the upper side of the culm height detection mechanism 16, the time from confirmation of the presence of grain culms by the motion detection mechanism 22 to automatic control by the culm height detection mechanism 16 is extremely short. This has the advantage that no operating time is wasted.

In addition, when the machine body turns around and the grain culms transported by the stock clamping transport body 6 and the stem transport body 8 are exhausted, there is nothing blocking the light source of the operation detection mechanism 22, so the drive motor 14 is activated. Since the culm height detection mechanism 16 cannot operate the operating mechanism 11, and the operating mechanism 11 of the stock support carrier 6 remains stopped at that position, the culm height detection mechanism 16 cannot operate the operating mechanism 11. This prevents malfunction of the culm height detection mechanism 16 due to the absence of grain culms in the conveyance route leading to the grain culms, and maintains the initial handling depth of the harvested grain culms after turning in a proper state.

Therefore, after the operation detection mechanism 22 detects the presence of grains being conveyed in the conveyance route and puts the actuation mechanism 11 of the stock support carrier 6 into the actuation position, the actuation mechanism 11 in the actuation position is Further, the culm height detection mechanism 16 automatically adjusts the length, and the motion detection mechanism 22 detects the absence of grain culms being conveyed along the conveyance route.
Even though the culm height detection mechanism 16 is provided, the operating mechanism 11 of the stock support carrier 6 can be reliably stopped at that position. Both the detection mechanism 22 and the culm height detection mechanism 16 can perform control without wasting operating time.

In short, the present invention provides a stock support carrier that changes the transfer position of the harvested grain culm with respect to the threshing part in the transport route of the harvested grain culm from the threshing part to the reaping part, and A combine harvester in which the operating mechanism of the body can be automatically adjusted by a culm height detection mechanism that detects the length of the harvested grain culm,
The operation mechanism of the stock head support carrier is linked to an operation detection mechanism that detects the presence or absence of a reaped grain culm, which is provided near the upper side of the culm height detection mechanism, and is activated by a detection signal of the presence of grain culms from the operation detection mechanism. Therefore, when there is a harvested grain culm to be transported on the transportation path of the harvested grain culm from the threshing section to the reaping section, the operation mechanism of the stock support carrier is controlled to detect the presence of the grain culm using the motion detection mechanism. Ready to operate according to the detection signal,
The operating mechanism in this operating state can be automatically adjusted by a culm height detection mechanism that detects the culm height of the grain culm, which is provided near the lower side of the operation detection mechanism.

Moreover, since the motion detection mechanism that detects the presence or absence of grain culms is located near the upper side of the culm height detection mechanism, it is possible to adjust the stock support conveyor to an appropriate position that immediately responds to the grain culm height with a slight time difference. Since the handling depth can be automatically adjusted, it eliminates wasted time from the operation state of the operating mechanism based on the detection of grain culm presence detected by the motion detection mechanism to the automatic control of the operating mechanism using the culm height detection mechanism. The depth adjustment device can be automatically adjusted.

Furthermore, when there is no harvested grain culm to be transported on the transportation path of the harvested grain culm from the threshing section to the reaping section, the operating mechanism of the stock support carrier is not in operation mode, so a culm height detection mechanism is provided. To ensure that the operating mechanism of a stock support carrier is stopped at that position to prevent malfunction of a culm height detection mechanism due to the absence of grain culms, and to optimize the initial handling depth of harvested grain culms. can be done at the same time.

[Brief explanation of drawings]

The drawings show an embodiment of the automatic handling depth adjustment device for a combine harvester according to the present invention, in which FIG. 1 is an overall side view of the combine, FIG. 2 is a perspective view of the main parts, FIG. 4
FIG. 5 and FIG. 5 are perspective views of main parts for explaining the operation, respectively, and show cases where the handling depth is appropriate, deep handling, and shallow handling. 2... Reaping section, 3... Threshing section, 6...
... stock support carrier, 11... operating mechanism,
16... Culm height detection mechanism, 22... Movement detection mechanism.

Claims (1)

[Claims] 1. During the transportation route of the harvested grain culm from the reaping section to the threshing section,
A stock support carrier is installed in the threshing section to change the inheritance position of the harvested grain culm, and the operating mechanism of the stock support support carrier can be automatically adjusted by a culm length detection mechanism that detects the length of the harvest grain culm. In the configured combine harvester, the operation mechanism of the stock head supporting conveyor is linked to a motion detection mechanism that detects the presence or absence of a harvested grain culm, which is provided near the upper side of the culm height detection mechanism, and the presence of grain culm is determined by the motion detection mechanism. 1. An automatic handling depth adjustment device for a combine harvester, characterized in that it is configured to be in an operating state based on a detection signal.