JPH0145334B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Generally, a ridge is 20 to 30 cm high as shown in FIG. 1, whereas a farm road is 35 to 70 cm higher than the field and has a horizontal distance of 50 to 100 cm.

Therefore, with large combines, the grain stored in the grain tank was loaded onto a transport vehicle such as a truck or trailer on a farm road using an auger, but small or medium-sized combines have no space to mount a large grain tank. Also, equipping an auger would be expensive, so the paddy was stored in a bag and then loaded onto a transport vehicle.

However, since the height difference between the farm road and the field is large as mentioned above, the loading work described above was extremely hard work.

In addition, guide rails are provided at the front and rear of the grain container mounted on the machine base, and the outer side of the grain container becomes higher in sequence, and a rolling wheel that rides on the guide rail is provided in the center of the width of the outside of the grain container, and a pair of upper and lower wheels are provided. It has been proposed to install a hydraulic cylinder to move the grain tank diagonally upward, but this method only allows the grain tank to protrude outward from the machine base by less than half the width, and the guide Due to the relationship between the rail and the rolling wheels,
Since it is about half the width of the grain tank, its lift height is extremely small, and as a result, the grain in the grain container can be loaded onto the platform of a transport vehicle located higher on the road than the field. I couldn't do it.

It has also been proposed to lift the grain container using a chain block, but this requires a great deal of effort and time to operate the chain.

Furthermore, a method of pushing up the grain container using a pair of bending links was proposed, but the lifting height is low and it cannot be moved outside the machine platform, so the only option is to put the truck into the field, and even then, it cannot be moved outside the machine platform. It is difficult to load and cannot be applied to weak fields because trucks cannot be brought into the fields.

The present invention aims to solve the above-mentioned problems, and is directed to a combine harvester in which a grain container is mounted on a machine base, and the base of a lift arm directed outward is pivotably supported on the machine base so as to be tiltable up and down. The lift arm is configured to be extendable and retractable, and a vertical drive device is attached thereto, a grain container is tiltably pivotally connected to the tip of the lift arm, and a space is provided between the grain container and the lift arm. It is characterized in that it is equipped with posture control means.

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on a machine stand 3 having a traveling device 2, in front of which a reaping device and a grain culm conveying device are installed, and on the other side of the machine stand 3, in order from the front, an operation panel and an operation panel are installed. A seat 4 and a grain hopper 5 are provided,
A discharge port of the grain lifting cylinder 6 of the threshing device 1 communicates with the grain hopper 5.

Furthermore, a pair of hanging rods 7, 7 are protruded from the end of the threshing device 1, facing both sides of the outlet of the grain hopper 5, and are provided between the grain hopper 5 and the driver's seat 4. A grain container 9 is provided for storing paddy bags 8 filled with grains, and this grain container 9 has side plates 10a on the bottom plate on the threshing device 1 side and on the rear side, as shown in FIG. 4b.
10b, a joint plate 11 is hinged to the outer side of the bottom plate, and rolling wheels 12a provided on the lower surface are mounted on a pair of square tube frames 12 at the front and rear.

Further, a stay 13 protruding outward from the lower surface of the bottom plate of the grain container 9 is pivoted by a fulcrum shaft 16 to a stay 15 that is integrated with a sliding frame 14 inserted into the square tube frame 12. The sink plate 10c is rotatably attached to the fulcrum shaft 16, and the rectangular tube frame 12 and sliding frame 14 constitute a lift arm.

Reference numeral 17 denotes a bracket in which the inner ends of the rectangular cylindrical frames 12, 12 are pivoted by a fulcrum shaft 18, and a hydraulic cylinder 19 is interposed between the bracket 17 and the lower outer end of the sliding frame 14. The outer part of the machine base 3 and the front and rear square tube frames 12,
Hydraulic cylinders 20, 20 serving as a pair of front and rear lifting drive devices are installed between the grain container 9 and the machine base 3, and hydraulic cylinders 20, 20 are installed between the lower surface of the bottom plate of the grain container 9 and the machine base 3 as a posture control means. A cylinder 22 is interposed.

Reference numeral 23 denotes an operating lever attached to the rear rectangular tube frame 12 via a spring plate 23a, and has a plurality of engagement holes 24, through which pins protrude from the sink plate 10c. 25, the angle of the sink plate 10c can be adjusted.

In the above-mentioned device, the grains in the grain hopper 5 are packed into a paddy bag 8, the chuck at the bag opening is closed, and then the grains are sequentially loaded into the grain container 9. When a predetermined amount is reached, the machine is moved along the farm road. Then, remove the operating handle 23 from the pin 25 and set the sink plate 10c on the operating lever 23 so that it is approximately horizontal.

At that time, when lowering the paddy bag onto the farm road, the hydraulic cylinder 19 is operated to push out the grain container 9, and then the hydraulic cylinder 22 is extended. He slipped and was ejected onto a farm road.

After the discharge is completed, the hydraulic cylinders 19 and 22 are operated to return, and the sink plate 10c is raised and set using the operating handle 23, so that the sink plate 10c becomes an outer plate of the grain container 9.

Also, when loading the paddy bags 8 onto the truck, when the hydraulic cylinders 19, 20 and 22 are operated,
The grain container 9 is pushed diagonally upward while maintaining a substantially horizontal position.

This operation is performed with the grain container 9 pushed out a little by the hydraulic cylinder 19, and then the hydraulic cylinder 20,
22 to set the rectangular tube frame 12 at a desired angle, the hydraulic cylinder 19 may be further actuated to push it up.

After completing the push-up, the hydraulic cylinder 2
When the height of the grain tank 9 is corrected using 0, the angle of the sink plate 10c is also corrected using the operation handle 23, and the hydraulic cylinder 22 is operated, the paddy bags 5 are discharged onto the loading platform of the truck.

And the aforementioned hydraulic cylinders 19, 20, 22
The switching valves 19a, 20 of the hydraulic circuit (see Fig. 6)
Orifice seats 19a', 20a', 22 of a, 22a
Since a' is constricted, the speed at which the grain container 9 is pushed out and pushed up is slow, and the speed at which it returns is fast.

Also, the paddy bags 8 in the grain container 9 are released to a desired location by the hydraulic cylinder 22.
It is dangerous if the grain weight exceeds the set value. To prevent this, a relief valve 22b is installed in the switching valve 22a.
By attaching a relief valve to the switching valve 20a (not shown), it is possible to prevent the switching valve 20a from being pushed up when the weight is excessive.

Furthermore, the set pressure of the relief valve 26 is the same as that of the relief valve 22.
It is larger than that of b. Hydraulic cylinder 19,2
0 is operated by the set pressure of the relief valve 26, and the hydraulic cylinder 22 is operated by the set pressure of the relief valve 22b.

Next, another embodiment of the present invention will be described with reference to FIGS. 7 and 8. The grain container 9' in this example consists of a box-shaped tank, and the upper opening is located directly below the discharge port of the grain lifting cylinder 6. The lifting mechanism for the grain container 9' is constructed in the same manner as in the previous embodiment.

When the grain container 9' becomes almost full, a sensing switch (not shown) installed at the top of the grain container 9' senses this and issues an alarm, allowing the driver to interrupt his work. The machine is brought to a farm road, the hydraulic cylinders 19, 20, and 22 are operated in the same way as in the previous embodiment, and the grain container 9' is pushed upward diagonally while maintaining a substantially horizontal position, and the locking handle 30 is operated. While opening the opening/closing plate 31, the hydraulic cylinder 22
When the grain container is further pushed up and tilted, the grains flow all at once onto the loading platform of a truck parked on the farm road.

After grain discharge is finished, close the opening/closing plate 31 and stop it with the locking handle 30,
9, 20, and 22 are reduced to their initial positions.

According to this embodiment, there is no need for bagging the grains, and the grains in the grain container 9' can be loaded into the transport vehicle all at once, so the grains can be processed with a simple operation. Moreover, it can be carried out with high efficiency.

The present invention provides a combine harvester in which a grain container is mounted on a machine base as described above, in which the base of a lift arm facing outward is pivotally supported on the machine base so as to be tiltable up and down, and the lift arm is configured to be extendable and retractable. At the same time, a vertical drive device is attached, a grain container is tiltably pivoted to the tip of the lift arm, and a posture control means is interposed between the grain container and the lift arm. Extend the arm outward,
By raising and tilting the grain container using the vertical drive device, it is possible to lift the grain container toward the loading platform of a transport vehicle parked at a position higher than the field. Grain can be quickly and easily loaded onto the platform by means of the interposed posture control means.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
Figure 1 a is a sectional view showing the relationship between the farm road and the field, b is a diagram showing the height and slope of the farm road, Figure 2 is a diagram showing the relationship between the field and the trucks on the farm road, and Figure 3 is a diagram showing the relationship between the farm road and the track on the farm road. Rear view of the main parts of the combine harvester according to the present invention, No. 4
Figure a is a side view of the same as above, b is a perspective view of the grain container, and Figure 5.
6 is a hydraulic circuit diagram, FIG. 7 is a rear view of another embodiment, and FIG. 8 is a side view of the same. 8...Paddy bag, 9...Grain container, 10a, 10b
... Side plate, 10c ... Sink plate, 12 ... Square tube frame, 14 ... Sliding frame, 19, 20, 22
... Hydraulic cylinder, 23 ... Operation handle.

Claims (1)

[Claims] 1. In a combine harvester in which a grain container is mounted on a machine base, the base of a lift arm facing outward is pivotally supported on the machine base so as to be tiltable up and down, the lift arm is configured to be extendable and retractable, and a vertical drive device is provided. A grain container in a combine harvester, characterized in that a grain container is tiltably pivotally attached to the tip of the lift arm, and a posture control means is interposed between the grain container and the lift arm. Processing equipment.