JPS643341Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention was developed in order to conveniently load grain collected by a combine harvester onto a transport vehicle. The present invention relates to a grain removal device in which a second grain lifting screw device, which can be driven and rotated and fixed around a vertical axis and a horizontal axis, is connected to the upper end of the first grain lifting screw device.

In a conventional grain removal device of this type, generally, for example, a first operating lever for a first drive mechanism that rotates a second grain screw device around a vertical axis, and a first operating lever for a first drive mechanism that rotates a second grain screw device around a horizontal axis. It is known that a device is provided with a second operating lever for a second drive mechanism that rotates around the core, but in such a structure, while watching the movement of the second grain screw device, The disadvantage is that both operating levers must be operated, which naturally results in a fumbling operation, which can easily lead to erroneous operations such as holding the operating lever incorrectly or operating it in the opposite direction. It was hot.

As a means to eliminate such drawbacks, conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 56-59828, the vertical position and horizontal position of the second grain frying screw device are determined in advance. There is also known a grain removal device that allows grain to be transported to a desired position by setting the angle with a dial and selecting start or stop from that state. However, with this type of conventional structure, there is no problem as long as the target position is reliably reached with the initially set target value, but in reality it is difficult to set the target accurately. As a result, in order to reach the target position, it becomes necessary to make fine adjustments vertically and horizontally while operating each dial near the end of the swinging motion of the second grain frying screw device. Therefore,
Although the operating range is small when making fine adjustments, the same inconvenience as the above-mentioned operation using the two levers cannot be avoided. In addition, regarding the structure, it requires a means for setting a target value, a means for detecting the current position, and a means for comparing and discriminating these, which inevitably leads to structural complexity that accompanies the complexity of control. It was hot.

The present invention provides a method for easily operating the first and second drive mechanisms of the second grain frying screw device with fewer erroneous operations when moving the discharge port of the second grain frying screw device to the target position. The purpose is to provide a grain extraction device with a simple structure.

The feature of the present invention for achieving the above object is that the first grain tank extends upward from the grain tank.
At the upper end of the grain frying screw device, there is a second shaft which can be driven and rotated and fixed around the vertical axis and the horizontal axis, respectively.
In a grain take-out device in which a grain raising screw device is connected, the first drive mechanism is operable to move in two different directions and rotates a second grain raising screw device around a vertical axis by movement in one direction. It controls the operation stop and the second direction by moving in the other direction
A single operating lever is provided for controlling activation and deactivation of the second drive mechanism that rotates the grain frying screw device around the horizontal axis, and further, this single operating lever is connected to the operation movement direction for the first drive mechanism. It is configured to be movable in a synthetic direction with the operating movement direction for the second drive mechanism, and when the operating lever is operated in the synthetic direction, the second grain screw device is moved between the vertical axis center and the horizontal axis. The structure is such that it can be rotated simultaneously around both axes, and this structure provides the following effects.

Since the operating levers for the first and second drive mechanisms are unified, and the lever operating directions for the first drive mechanism and the lever operating direction for the second drive mechanism are different from each other, it is easy to operate the lever without fumbling. However, it is possible to avoid erroneous operations due to holding the lever incorrectly or operating it in the opposite direction as much as possible, and by operating the single operation lever in the desired direction, the second grain frying screw device can be operated accurately and quickly. It has now been possible to rotate the device around its axis.

The single operating lever is configured to be movable in a composite direction of the operating movement direction for the first drive mechanism and the operating movement direction for the second drive mechanism, and by operating the lever in the combined direction, the second lifting mechanism is moved. Since the grain screw device can be rotated around both axes at the same time, the second grain screw device can be rotated to a desired attitude more quickly.

A means for presetting a target movement position of the second grain lifting screw device and detecting the current position when the second grain lifting screw device simultaneously rotates around the two axes due to the operation of the operating lever in the synthetic direction. There is no need for a means for detecting the set value or a means for comparing and determining the set value and detected value, but simply by providing a means for detecting in which direction the operating lever is operated, and based on the detection result. It is only necessary to provide a means for controlling each drive mechanism to drive each drive mechanism separately or simultaneously, and to provide a structure for quickly and accurately moving the discharge port of the second grain screw device to the desired location. , which is relatively simple and easy to configure.

Hereinafter, an embodiment of the present invention will be described based on the drawings. A weeding tool 6, a weeding tool 6, A device for taking out grain from the grain tank 3 of a combine harvester in which a reaping section A including a device 7, a clipper type reaping device 8, and a device 9 for conveying and supplying the harvested grain culm to the threshing device 2 is arranged in a vertically movable manner. Basically, the first grain frying screw device 10 is installed upwardly from the grain tank 3, and the vertical axis Y and the horizontal axis are provided at the upper end of the first grain frying screw device 10. A second grain frying screw device 11 that can be driven and rotated and fixed around the axis X and has a grain discharge port 11a at its tip is installed in series.

The first grain frying screw device 10 has a screw shaft 10A that can be driven and rotated around the vertical axis Y.
and a screw tube 10B fitted over the screw tube.

The second grain frying screw device 11 has a screw shaft 11A, whose lower end is interlocked with the upper end of the first screw shaft 10A via a horizontal shaft 12 located on the horizontal axis X, and whose lower end and a screw tube 11B that fits over the screw shaft 11A in a state where the screw tube 11B communicates with the upper end of the first screw tube 10B.

Upper end portion 10 of the first screw cylinder 10B
Ba is configured to be freely rotatable around the vertical axis Y while being integral with the second screw tube 11B, and the connection portion between the two screw tubes 10B and 11B is configured to be relatively rotatable around the horizontal axis X. has been done.

In addition, at the upper end of the first screw shaft 10A,
A blade 13 for scraping the lifted grain to the second screw device 11 side is attached to the interlocking horizontal shaft 12, and the blade 13 sends the scraped grain from the first screw device 10 to the second screw device 11 side. A screw blade 14 is attached.

The first drive mechanism 15 that rotates the second screw device 11 around the vertical axis Y fixes a ring-shaped bevel gear 16 to the rotational upper end 10Ba of the first screw tube 10B, and A gear 17 is provided on the fixed part side to rotate the bevel gear 16, that is, the rotating upper end portion 11Ba, by meshing with the bevel gear 16 and rotating in a fixed position, and a forward/reverse mechanism for driving the gear 17. A possible electric motor 18 is provided and configured.

A second drive mechanism 19 for rotating the second screw device 11 around the horizontal axis X is suspended between the rotation upper end portion 10Ba and a member 20 connected to the second screw tube 11B. hydraulic cylinder 21
The second screw device 11 is rotated around the horizontal axis X by expanding and contracting the screw through the electromagnetic valve 22.

A single operating lever 23 is provided at the rear of the seat 4A of the driving section 4 and is elastically held at a specific position, and is movable in the vertical direction, horizontal direction, and a composite direction thereof. Utilizing a ball bearing structure, etc., the operation lever 23 is pivoted so as to be swingable in all directions around the ball bearing part, and can be operated in the vertical direction, horizontal direction, and the composite direction thereof. A well-known guide means such as a conical coil spring is provided so that the operating lever 23 is automatically returned to a specific position P such as a fulcrum of the guide groove. The specific position P of the operating lever 23 is elastically maintained using a biasing means.

Then, it is detected in which direction the operating lever 23 is operated, and depending on the detection result, either one of the drive mechanisms 15 and 19 is selectively operated, or both are operated simultaneously. The operation lever 23 and each drive mechanism 15, 19 are
are linked. The control device 24 may, for example, detect that the single operation lever 23 has been operated to either one side or the opposite side of the vertical path a including the specific position P, or the horizontal path b including the specific position. A well-known detection switch detects whether the switch is operated to one side or the opposite side, and furthermore, to which side the switch is operated in the composite direction of the vertical path a and the horizontal path b, When the operating lever 23 is operated within the vertical path a or within the horizontal path b, either the first drive mechanism 15 or the second drive mechanism 19 is alternatively selected and driven in a predetermined direction. and when it is detected that the operating lever 23 is being operated in the composite direction, the operation is controlled to drive both the first and second drive mechanisms 15 and 19 in a predetermined direction. It is configured. That is, when the operating lever 23 is operated to one side of the vertical path a, the electric motor 18 of the first drive mechanism 15 is rotationally driven in the forward direction, and when the operating lever 23 is operated to the other side of the vertical path a, When the electric motor 18 is reversely rotated and the single operating lever 23 is operated to an upper position of the horizontal path b including the specific position, switching the solenoid valve 22 of the second drive mechanism 19 to a raised position;
When the horizontal path b is operated to the lower position, a signal is output from the control device 24 to switch to the lower position.
When the operating lever 23 is operated, for example, when the operating direction is in the upper right direction, the signal from the switch that detects the upper right position of the operating lever 23 is transmitted to the side where the electric motor 18 of the first drive mechanism 15 rotates in the forward direction. and input to the circuit of the second drive mechanism 1.
In order to input the solenoid valve 22 of No. 9 to the circuit on the side that raises it, it is connected via a diode whose flow direction is from the detection switch at the upper right position to each of the circuits in the forward direction. The control device 24 is constituted by well-known signal transmission means.
Note that not only when the operating lever 23 is operated to the upper right position as in the above example, but also when the operating lever 23 is operated to the upper left position, the lower right position,
As in the case of the above example, the forward direction of the diode is set so that each of the drive mechanisms 15 and 19 is driven in the desired direction when the lower left position is operated. Needless to say, it is sufficient to adopt the signal transmission means described above, and the control device 24 may be configured in this manner by utilizing well-known techniques.

In addition, the first screw shaft 10A and the interlocking horizontal shaft 12, and the interlocking horizontal shaft 12 and the second screw shaft 1
1A are interlocked via bevel gear pairs 25 and 26, respectively.

Reference numeral 27 in the figure indicates a bevel gear pair 2 connected to a shaft 28 at one end of which is interlocked with the ring-shaped bevel gear 16.
9 and link 3 at the other end.
A shaft is horizontally suspended in the tank 3 in a manner interlocked with a vertical shaft 30 provided vertically penetrating through the front portion of the upper plate via a pair of bevel gears 31;
This handle is detachably attached to the protruding upper end different diameter portion 30a of 0, and these handles constitute a manual operation system for rotating the second grain frying screw device 11 around the vertical axis Y.

According to the above configuration, by operating and moving the single operating lever 23 along the horizontal path b, the second
The screw device 11 can be rotated around the vertical axis Y without rotating around the horizontal axis X, and by operating and moving the single operation lever 23 along the vertical path a, the second Screw device 1
1 can be rotated around the horizontal axis X without rotating around the vertical axis Y, and the single operation lever 23 can be operated and moved to a position other than the horizontal path b and the vertical path a. By doing so, the second screw device 11 can be rotated around the vertical axis Y and the horizontal axis X at the same time. In addition, operation lever 2
3 may be operable only along the horizontal path b and the vertical path a, and in addition, in the embodiment, the vertical direction and the horizontal direction are illustrated as two different directions, but this It can be in any direction.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain extraction device according to the present invention, and FIG. 1 is a partially cutaway plan view of the combine harvester, FIG. 2 is a partially cutaway side view of the combine harvester, and FIG. 3 is an enlarged longitudinal section of the main parts. It is a front view. 3... Grain tank, 10... First grain frying screw device, 11... Second grain frying screw device, 15
...First drive mechanism, 19...Second drive mechanism, 23
...Operation lever.

Claims (1)

[Scope of utility model registration request] At the upper end of the first grain frying screw device 10 extending upward from the grain tank 3, there is provided a second grain frying screw device 11 that can be driven and rotated and fixed around the vertical axis Y and the horizontal axis X, respectively. A first drive mechanism 1 that is operable to move in two different directions in the serially arranged grain removal devices and rotates the second grain screw device 11 around the vertical axis Y by moving in one direction.
5, and a single operating lever 23 that controls the activation and deactivation of the second drive mechanism 19 that rotates the second grain frying screw device 11 around the horizontal axis X by moving in the other direction. Furthermore, this single operation lever 23 is configured to be movable in the combined direction of the operation movement direction for the first drive mechanism 15 and the operation movement direction for the second drive mechanism 19. The second grain frying screw device 11 is configured to be rotated simultaneously around both the vertical axis Y and the horizontal axis X in conjunction with the operation in the synthesis direction. A grain extraction device characterized by: