JPH0528087B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a reaping device for a combine harvester.

BACKGROUND ART A horizontal sensor detects the inclination of a vehicle body in the left-right direction, and rolls the reaping device in a horizontal position. This rolling is performed by a telescopic cylinder such as hydraulic pressure.

Problems to be Solved by the Invention When rolling is performed using a cylinder that expands and contracts with hydraulic pressure, the cylinder has an expansion/contraction limit position, so the neutral position of the rolling region must be set at the center of the piston stroke length within this cylinder. Once determined, the reaping position can be rolled left and right over the same angular range, with the position of the reaping device parallel to the vehicle body as the neutral position.

However, in reality, when the combine harvester is tilted left and right, the weight on the left and right sides of the car body differs due to the installation of the operator's seat and the grain tank that stores the harvested grain. It tends to lean toward the larger side. Therefore, due to the inclination of the vehicle body, the rolling angle for controlling the rolling of the reaping device in a horizontal position also increases. In such a case, if the left and right rolling angles are in the same range as described above, the rolling angle will be narrowly limited or the entire area of the rolling cylinder cannot be fully used, which is unreasonable.

Means for Solving the Problems This invention provides a rolling cylinder 5 that performs rolling control with respect to the vehicle body 2 to make the reaping device 1 parallel to the reaping ground in the reaping width direction, and a rolling cylinder 5 that controls the rolling of the reaping device 1 with respect to the vehicle body 2 in order to make it parallel to the reaping ground in the reaping width direction. The structure of the reaping device for a combine harvester is characterized in that a corresponding limit position for rolling control is set, and a rolling neutral position on the rolling cylinder 5 is provided so as to be movable and adjustable.

Effect of the Invention When the vehicle body 2 is tilted in the left-right direction during combine harvesting operation, the reaping device 1 is also tilted in the same direction, but by detecting this with a horizontal sensor etc., rolling control is activated and the operation of the rolling cylinder 5 is controlled. Therefore, the reaping device 1 is rolled relative to the vehicle body 2 and maintained in a horizontal position.

The rolling cylinder 5 is set so that the rolling region of the left and right sides of the vehicle body 2 when the vehicle body 2 tilts toward the side with a higher load is set to a large limit position, and the rolling region when the left and right sides of the vehicle body 2 tilt toward the side with a lower load is set to a small limit position. A rolling neutral position is set between these two rolling regions and at a position where the reaping device 1 is parallel to the vehicle body 2. Therefore, the rolling control range for inclination of the vehicle body 2 toward the side where the load is greater is maintained larger than the control range for the opposite side, and the entire length of the rolling cylinder 5 can be used effectively.

Effects of the Invention In this way, the rolling control of the reaping device 1 is performed in accordance with the size of the left and right weights of the vehicle body 2, so that the rolling control range for the side with a larger slope of the vehicle body is made larger, and the rolling control range for the side with a smaller slope is made smaller. Therefore, the same rolling cylinder 5 can be used to the full extent of the rolling area and can be used effectively over the entire length.
Unnecessary length can be reduced.

Moreover, since the rolling neutral position of the rolling cylinder 5 is provided so as to be movable and adjustable,
The rolling range of the reaping device 1 can be adjusted appropriately by changing the size of the left and right loads due to the weight of each part on the combine harvester body 2, the weight ratio, etc.
Alternatively, the left and right rolling areas can be made equal, without replacing the rolling cylinder 5.
It can be easily adjusted by the same rolling cylinder 5.

Embodiment In the illustrated example, the combine harvester has a vehicle body 2 having a pair of left and right running devices 6 in the form of crawlers.
A threshing device 7, a grain tank 8 for storing threshed grains, a driver's seat 9, etc. are provided on the top, and a reaping device 1 is provided in front of the vehicle body 2. Traveling device 6 at the front of the vehicle body 2
A transmission device 10 is provided for transmitting power to the reaping device 1, threshing device 7, etc., and a cylindrical support frame 12 is provided above the transmission device 10 to be movable up and down about a horizontal axis 11.
between the vehicle body 2, a lifting cylinder 13 which can be extended and contracted by hydraulic pressure, a link frame 14 which can be bent forward and backward,
The reaping device 1 is supported by the support frame 15 interposed therebetween, expands and contracts the link frames 14 and 15 back and forth with respect to the vehicle body 2 by expanding and contracting the lifting cylinder 13, and moves up and down about the horizontal axis 11 of the support frame 12. The configuration controls the elevation and descent of the

The reaping device 1 connects the left and right center portions of the reaper frame 16 to the lower end of the support frame 12 by means of a rolling metal 17 and a rolling shaft 3.
The transmission mechanism in the reaper frame 16 is connected to the transmission device 1 via the transmission shaft in the support frame 12.
0, and is provided to transmit power from the shaft 11, etc.

The rolling shaft 3 is provided on one side of the support frame 12 in a nearly horizontal state in the front-rear direction, and the support frame 12 has arms 18, 1 that are gate-shaped in plan view on both left and right sides.
A rolling cylinder 5 is provided between one arm 18 and the corresponding reaping machine frame 16 and is extendable and retractable by hydraulic pressure. A rolling control device is configured to roll the roller around the rolling shaft 3. Moreover, this arm 18 and the other arm 19 and the reaper frame 1 corresponding to these
6, a rolling guide rod 20 is provided, and the guide groove 21 at the upper end of the rolling guide rod 20 fixed to the reaping machine frame 16 is fitted into the arms 18 and 19 to guide the rolling of the reaping device 1. It is structured as follows.

The reaping device 1 includes a raising device 2 in which a weeding frame 22 and a grain culm lifting lug 23 are arranged from the front end of a reaping machine frame 16.
4. Grain culm raking device 25, clipper type cutting blade device 2
6, etc., and the horizontal sensor 4 is installed in a part of this reaping device 1 at the rear of the upper part of the pulling device 25, so that the horizontal sensor bubble axis crosses the front extension line of the rolling shaft 3 in the left and right direction. Provided on the component.

At the rear of the reaping device 1, a grain culm moving device 27 for transporting the grain culm harvested by the reaping device 1 is provided toward the transporting and feeding device 28 of the threshing device 7 at the rear upper part. It is configured so that it can be rotated to adjust the depth of supply of grain culms to the threshing device 7.

The horizontal sensor 4 and the rolling cylinder 5 are configured in conjunction with each other by an electromagnetic mechanism and a hydraulic circuit. When the horizontal sensor 4 detects a tilt on the left or right side, a solenoid switches a hydraulic valve to adjust the hydraulic pressure. is sent to the extension side or contraction side of the rolling cylinder 5, thereby rolling the reaping machine frame 16 against the support frame 12 and rolling the reaping device 1 to a substantially horizontal position. The horizontal detection by the sensor 4 releases the switching of the hydraulic valve so that it does not expand or contract.

A rolling cylinder 5 is provided in front of the vehicle body 2 on the side where the driver's seat 9, the grain tank 8, and the prime mover between these are mounted, and the piston part 29 fitted into the rolling cylinder 5 is The cylinder portion 30 is connected to the arm 18 portion, and the cylinder portion 30 is connected to the reaper frame 16 via a threaded rod 32 having a male thread 32a and an adjustment member 31. This adjustment member 31 has a female thread 31a and is screwed into the threaded rod 32, and when it is turned to expand or contract, the position of the cylinder part 30 with respect to the piston part 29 changes, and the reaping device 1 with respect to the vehicle body 2 changes. If the relative position between the piston section 29 and the cylinder section 30 when the piston section 29 and the cylinder section 30 are in a parallel attitude position is a neutral position, this neutral position can be adjusted up and down with respect to the cylinder section 30 by expanding and contracting the adjustment member 31. Assuming that the vehicle body 2 is considerably heavier on the cockpit 9 side than on the threshing device 7 side, the rolling cylinder 5 has a stroke length on the side where the piston 29 extends upward relative to the neutral position, and a stroke length on the side where it contracts. , and set each limit position for left and right rolling. Adjustment member 3
This condition can also be set by expanding 1.

When reaping while moving the machine forward,
The grain culm raised by the raising device 24 is moved to the raking device 25.
While being raked and guided to the rear side, the ears are harvested by the cutting blade device 26, transferred through the rear moving device 27, and supplied to the moving feeding device 28 of the threshing device 7, where the tips are threshed in the threshing room. be done. The threshed grains are subjected to a sorting action and then supplied to the grain tank 8 by a grain frying machine or the like.

When the traveling device 6 reaches soft soil, the vehicle body 2 tilts so that one of the left and right sides becomes deeper as shown in FIG. 5 or FIG. 7, and the reaping device 1 also tilts in the same direction. When the aircraft tilts to the right in the direction of travel (A) (Fig. 5), this tilt is detected by the horizontal sensor 4.
is detected and the piston portion 29 is extended to extend the rolling cylinder 5, so that the reaping device 1 is rolled toward the side opposite to the inclination of the vehicle body 2 around the rolling shaft 3. As a result,
When this reaping device 1 is in a horizontal state (Fig. 6),
The horizontal sensor 4 detects the horizontal state and stops rolling, and the height at which the grain culm is cut by the reaping device 1 is the same on the left and right as the cutting blade device 26 is parallel to the soil surface.

Conversely, when the vehicle body 2 tilts to the left in the traveling direction (A) (Fig. 7), this tilt is detected by the horizontal sensor 4.
is detected, the rolling cylinder 5 is contracted, and the reaping device 1 is rolled toward the opposite side to this inclination, so that the reaping device 1 is placed in a horizontal state (FIG. 8).

When the cutting height of the grain culm by the cutting blade device 26 of the cutting device 1 is changed due to vertical movement of the traveling device 6 or tilting back and forth, etc., the cutting height of the grain culm by the cutting blade device 26 of the cutting device 1 is changed, or by manual operation using the operating device or by the weeding frame 22 of the cutting device 1. Based on detection by a reaping height sensor or the like provided in the section, the elevating cylinder 13 is operated or controlled to extend and contract, thereby maintaining the reaping height constant. At this time, the reaping device 1 is moved up and down with the supporting frame 12 centered around the shaft 11 portion. The reaping device 1 is
Even if the cutting height is changed, the relationship between the rolling shaft 3 relative to the support frame 12, the rolling position of the reaping device 1 around this rolling shaft 3, the horizontal sensor 4, etc. does not change, so rolling is performed independently of the cutting height. be done.

In such a rolling control of the reaping device 1, since the left-right inclination of the vehicle body 2 tends to be largely tilted to the right side in the figure, which is the heavier side of the vehicle body 2 under normal conditions, the reaping device 1 based on this is Regarding the rolling action of , rolling to the left (b) is performed more greatly than rolling to the right (c). Along with this, the neutral position of the rolling cylinder 5 where this rolling control should be performed is set in advance to allow a large amount of rolling (b) to the left.
The left and right rolling actions (b) and (c) can be effectively performed over the full stroke limit position of the rolling cylinder 5.

Rotating the adjustment member 31 to adjust the piston portion 29
The neutral position can be adjusted by changing the position of the cylinder part 30, or the neutral position can be moved from side to side by rolling.
It can also be set in the center of (b) and (c).

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partial plan view, Fig. 2 is a side view, Fig. 3 is a partially enlarged front view, and Fig. 4 is a side view thereof. 5 to 8 are front views showing the operation. In the figure, 1 is a reaping device, 2 is a vehicle body, 3 is a rolling axis, 4 is a horizontal sensor, 5 is a rolling cylinder, 6 is a traveling device, 7 is a threshing device, 8 is a grain tank, 9 is a driver's seat, 29 30 represents a piston portion, 30 represents a cylinder portion, and 31 represents an adjustment member.

Claims (1)

[Claims] 1. The rolling cylinder 5 that performs rolling control on the vehicle body 2 to make the reaping device 1 parallel to the reaping surface in the reaping width direction is set with a rolling control limit position that corresponds to the magnitude of the lateral load on the vehicle body 2. In addition, the rolling cylinder 5
A reaping device for a combine harvester, characterized in that an upper rolling neutral position is movably and adjustable.