JPH046524Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a grain recovery device for a combine harvester in which a transport device for lifting and transporting grains in a grain tank is configured to be able to rise and fall and rotate using a drive mechanism. .

[Conventional technology]

This type of grain collecting device is known to move the carrying out device to the desired carrying out position by visually measuring the up-and-down position and turning position of the carrying out device and operating an operating device (Utility Model No. 59-8527). (see issue).

[Means for solving problems]

However, the conventional configuration described above has the following inconveniences, leaving room for improvement.

In other words, even if the waiting position of the transport vehicle at the edge of the ridge is fixed and the position to which the unloading device is moved is the same every time, the driving device must be operated while visually measuring the undulating position and turning position. Therefore, no other work can be done during that time. Moreover, this operation significantly reduces work efficiency for inexperienced workers.

In addition, it has been known that a device is equipped with a mechanism that automatically returns the unloading device to the storage position during movement from the discharge location for discharging grains in the grain tank to the reaping work location. When there is an obstacle, the unloading device must return to the retracted position and rotate to avoid hitting the obstacle. Conventionally, the unloading device was rotated in a fixed direction, so depending on the location of the obstacle, the unloading device may become obstructed. There is a risk that the machine will automatically return if it hits an object, so the machine must be moved in advance to prevent the unloading device from hitting an obstacle, and then the unloading device can be rotated, which is a tedious task.

The present invention was developed in view of the above-mentioned circumstances, and if the unloading position is fixed each time,
It is an object of the present invention to provide a grain collecting device for a combine harvester, which simplifies manual movement of a carrying-out device by a worker and also allows the carrying-out device to be easily moved while avoiding obstacles.

[Means for solving problems]

The combine grain recovery device according to the present invention is
In order to achieve the above object, the above-mentioned structure is provided with a sensor for detecting the up-down position and the turning position of the carrying-out device, and a setting device for adjusting and setting the up-down position and the turning position of the carrying-out device, A state in which the operation of both of the drive mechanisms is controlled to move the carry-out device to the position set by the both setters, and a state in which the return operation of the drive mechanisms is controlled to move the carry-out device to the set storage position. and a state in which the drive mechanism is automatically operated based on the sensor and the setting device, and a state in which the drive mechanism is manually operated based on the operation of a manual operating tool. A switching means that can be operated is provided, and further,
A feature of the present invention is that the manual operation tool and the drive mechanism are configured to be linked so that the turning operation of the carry-out device can be selected between right turn and left turn.

The functions and effects of the above characteristic configuration are as follows.

[Effect]

In other words, if the position to which the unloading device is to be moved is fixed each time, by setting the up/down position and rotation position of the unloading device with the setting device during the first unloading operation, from the next unloading operation, Just by switching the operation selector switch, the drive mechanism will automatically operate and the unloading device can be moved to the set unloading position.
Furthermore, when storing the device, just by switching the operation changeover switch, the drive mechanism automatically returns to its original state and the unloading device can be moved to the preset storage position.

In addition, by manually operating the unloading device by selecting the rotation operation of the unloading device to the right or to the left, it is possible to store the unloading device without colliding with it when there is an obstacle at the unloading location. There is flexibility in setting the posture, carrying out posture, etc.

[Effect of idea]

Therefore, it is not possible to move the unloading device while the machine is being moved to the unloading location where a transport vehicle or the like is waiting, or to operate the retractor while moving the machine when moving on to reaping work after unloading. This saves time for moving the unloading device and improves work efficiency.In addition, when there is a possibility of the unloading device colliding with an obstacle, avoidance operations can be performed to avoid the collision. Since it is possible to turn in the direction that is quickest, it has become possible to improve work efficiency from this point of view as well.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 5, the front part of the machine includes a pre-harvesting processing section 1, a threshing device 2 for threshing the transported grain culm from the pre-harvesting processing section 1, and a waste straw processing device for processing waste straw from the threshing device 2. 3. A grain tank 5 that stores the grains conveyed by the vertical conveyance device 4; a grain tank 5 that stores the grains transported by the grain tank 5; A hydraulic cylinder 17 connects the horizontal axis
A combine harvester is constructed which is equipped with an unloading device 9 around which a transverse screw conveyor 8 is connected in communication so as to be able to swing up and down.

As shown in FIG. 2, the cylindrical case 10 of the vertical screw conveyor 7 has a double-cylindrical structure at its upper end, and the lateral side of the upper end of the double-cylindrical outer cylinder 10A and the lateral side of the horizontal screw conveyor 8 The proximal end lateral side portion is fitted to be relatively rotatable so as to be able to swing up and down, and together with this outer cylinder 10A, the lateral screw conveyor 8 is rotated around the cylinder axis P of the vertical screw conveyor 7. It is configured to be able to swing and swing freely using a swinging mechanism.

To explain the turning and swinging mechanism in detail, the outer cylinder 10
A ring gear 11 having a notch in a portion corresponding to the hydraulic cylinder 17 is externally fitted, and a drive pinion 1 for this ring gear 11 is fitted.
2 is fixed to the output shaft 13 of an electric motor M that can freely rotate in the forward and reverse directions.
It is configured so that it can be driven in rotation.

An undulation position sensor 21 for detecting the undulation position of the carry-out device 9 is provided on the horizontal axis X, and a rotation position sensor 22 for detecting the rotation position is provided on the cylinder axis P.

On the switch panel 23 of the control section, as shown in FIG. 3, there are an automatic/manual changeover switch S1 as a switching means for switching between automatic and manual mode, and a storage/unloading changeover switch S for switching between storage and unloading.
2, and an undulation position setting device 24 for setting the undulation position.
A turning position setting device 25 for setting the turning position is provided.

The control circuit of the unloading device 9 will be explained based on FIG. The circuit operates the hydraulic cylinder 1 according to the setting values of the undulation position sensor 21 and the undulation position setting device 24.
7 and a swing position control circuit B for driving the motor M according to the settings of the swing position sensor 22 and the swing position setter 25.

The undulation position control circuit A includes an undulation position setting device 2.
4 and the undulation position sensor 21, and a first differential amplifier OP1 for amplifying the deviation of these output voltages.
A pair of ascending comparators CP1 and descending comparators receive the output of the first differential amplifier OP1 and determine whether to raise or lower the undulating position.
CP2 and an electromagnetic valve drive circuit 26 for expanding and contracting the hydraulic cylinder 17.

The swing position control circuit B has the same configuration as the undulation position control circuit A, but a swivel position sensor 22 and a swivel position setting are provided in place of the undulation position sensor 21, the undulation position setter 24, and the electromagnetic valve drive circuit 26, respectively. 25 and a motor drive circuit 27 are used in the circuit.

In addition, the undulation position setting device 25 and the first differential amplifier OP
1, and a second switch SW ₂ is inserted between the rotation position setter 25 and _the second differential amplifier OP2 _.
The second switch _SW2 is interlocked with the storage/unloading switch S2. Further, a third switch is connected between the ascending comparator CP2 and the descending comparator CP2 and the electromagnetic valve drive circuit 26.
SW ₃ and a fourth switch SW ₄ are inserted, respectively, and a fifth switch SW ₅ and a sixth switch SW ₆ are inserted between the right turning comparator CP3 and the left turning comparator CP4 and the motor drive circuit 27, respectively. ,
These third switch _SW3 to sixth switch _SW6 are interlocked with the automatic/manual changeover switch S1.

Next, the operation of these switches and the control circuit of the unloading device 9 will be explained. The automatic/manual changeover switch S1 shown in FIG. 3 is in the "auto" position, that is, the third switch _SW3 to the sixth switch _SW6 are in the a contact, and the storage/unloading switch S2 is in the "unload" position. That is, when the first switch SW ₁ and the second switch SW ₂ are in the a contact, for example, when viewed from the up-and-down position control circuit A, the deviation between the set value and the detected value is amplified by the first differential amplifier CP1. , when the voltage value is larger than the value set by the variable pressure resistors VR ₁ and VR ₂ , the rising comparator CP1 is turned on, and when it is smaller, the falling comparator CP2 is turned on, thereby driving the electromagnetic valve. circuit 26
is activated, and as a result, the deviation between the detected value and the set value settles to a certain constant value. This state means that the up-and-down position of the unloading device 9 substantially coincides with the target set position.

Also, set the automatic/manual changeover switch S1 to "automatic".
When the storage/export changeover switch S2 is in the "storage" position, that is, when the first switch SW ₁ and the second switch SW ₂ are at the b contact, as an example, when looking at the undulation position control circuit A, the undulation The (+) input side of the first differential amplifier OP1 connected to the position setting device A is grounded and has a zero potential, the lowering comparator CP2 is unilaterally turned on, and the electromagnetic valve drive circuit 26 is connected to the hydraulic cylinder 17. continues to operate until it reaches the most contracted state, that is, the undulating position in the retracted state. These two operations of the undulating position control circuit A are as follows:
The same applies to the operation of the turning position control circuit B, and by operating these two control circuits A and B simultaneously, the carrying out device 9 can be stored and carried out.

Note that variable resistors VR ₁ to VR ₄ are installed to adjust the reference voltage of the comparators, and by these, it is possible to provide a buffer zone in which the two drive circuits do not operate together.

When the automatic/manual changeover switch S1 is set to the "manual" position, that is, when the third switch SW ₃ to the sixth switch SW ₆ are in the b contact, the control circuit of the unloading device 9 switches between the setters 24 and 25. and sensor 21,
22, control can be performed only by the cross switch 28. In other words, cross switch 28
By simply tilting the lever 29, which serves as a manual operating tool, toward the "up" position, the current will flow between the U contact and the _third switch
The water flows into the electromagnetic valve drive circuit 26 through the b contact of the valve, and the undulation position rises. Of course, the same operation can be performed for "descending", "turning to the right", and "turning to the left".

The determination of whether the positional relationship between the transport vehicle for collecting grain and the machine is the same as the previous transport may be done by the worker's eye, or by using sensors, etc. .

[Brief explanation of the drawing]

The drawings show an embodiment of the grain collecting device for a combine harvester according to the present invention, and FIG. 1 is a control circuit diagram of the unloading device, FIG. 2 is an enlarged view of the unloading device, FIG. 3 is a plan view of the switch panel, and FIG. The figure is a plan view of the cross switch, and FIG. 5 is an overall side view of the combine harvester. 5...Glen tank, 9...Export device, 17,
M... Drive mechanism, 21, 22... Sensor, 2
4, 25...Setting device, 29...Manual operating tool, S2
...Operation changeover switch.

Claims (1)

[Scope of utility model registration request] This is a combine grain recovery device in which a carry-out device 9 for lifting and carrying out grains in a grain tank 5 is configured to be able to rise and fall and turn by a drive mechanism 17, M. Sensors 21 and 22 that detect the position, and a setting device 2 that adjusts and sets the up/down position and turning position of the carrying out device 9.
4 and 25, and both the setting devices 2
4 and 25, and a state in which both the drive mechanisms 17 and M are operated and controlled to move the carry-out device 9 to the set position in steps 4 and 25, and a state in which both drive mechanisms 17 and M are operated and controlled to move the carry-out device 9 to the set storage position. It is equipped with an operation changeover switch S2 for switching the return operation of M to a state in which the return operation is controlled, and the sensors 21, 2
2 and the setting devices 24, 25, and a state in which the drive mechanisms 17, M are manually operated based on the operation of the manual operating tool 29. A combine harvester is provided with a switching means, and the manual operation tool 29 and the drive mechanism 17, M are linked so that the turning operation of the unloading device 9 can be selected between right turning and left turning. grain collection equipment.