JPH0228661Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a reaping device for reaping machines such as combine harvesters and binders, in which a reciprocating clipper-type cutting blade is suspended horizontally in the reaping section.

``Prior Art'' Conventionally, a technique for fixing the receiving blade side of the cutting blade to the cutting frame via a base plate (for example, 1983-
Publications No. 27611 and Utility Model Publication No. 58-28494) were published.

``Problems to be solved by the invention'' In the conventional technology, the left and right ground heights of the cutting blades change due to the left and right inclination of the machine body, and the height of the stubble becomes uneven, causing problems in the field after cutting. It was difficult to walk, and there were other problems such as long stubble getting wrapped around the rotary tiller claws during tilling.

In addition, as shown in Japanese Patent Application Laid-open No. 56-55112, there was a technique for horizontally supporting the entire reaping section by adjusting its inclination to the left and right, but the support structure for the reaping section became complicated, making it easier to reduce costs. In addition, there were structural and functional problems such as the relative position of the reaping part and the threshing part changing, making it impossible to stably supply the reaped grain culm.

Furthermore, as shown in Japanese Patent Application Laid-open No. 56-61919, there was a technique for horizontally adjusting and supporting only the cutting blade, but the cutting blade drive shaft was provided on the same axis as the horizontal adjustment fulcrum of the cutting blade. Therefore, the reaping drive structure is restricted by the reaping blade drive system, and there are problems in that it is not easy to improve the function of the reaping drive structure or reduce costs by simplifying it.

``Means for Solving the Problems'' However, in the present invention, the cutting blade 21, which is suspended horizontally on the cutting section 7 and operates reciprocatingly, is attached to the swinging fulcrum shaft 19a so that the left and right ends thereof can be raised and lowered, and the left and right ends of the An inclination adjustment member 43 is provided to adjust the support angle of the cutting blade 7 based on the output of a body tilt sensor 46 that detects inclination, and a guide body 38 is provided to connect the crankshaft 27 that drives the cutting blade 7 and the cutting blade 7. They are characterized in that they are connected to each other so that they can move vertically.

``Function'' Therefore, since only the cutting blade is horizontally adjusted based on the detection result of the sensor, it is possible to carry out the inheritance of the reaped grain culm and the support of the reaping part functionally with a simple structure, and also to connect the crankshaft and the reaping section. Since the blades are interlocked and connected so that they can be raised and lowered, the cutting blades can be driven at a position other than the swinging fulcrum axis, and the cutting blade support structure, cutting blade drive system, and reaping part drive structure have a simple and functional configuration for handling and operation. This makes it easier to achieve improvements in performance and cost reduction than in the past.

"Embodiment" An embodiment of the present invention will be described below in detail based on the drawings. Fig. 1 is a side view of the combine harvester, and Fig. 2 is a plan view of the same.
3 is a machine base that is fixedly supported on the truck frame 1; 4 is a threshing section that suspends the feed chain 5 on the left side and has a handling cylinder 6 built therein; A reaping section that is raised and lowered by a hydraulic cylinder 9, 10 a straw cutter section that faces a straw removal chain 11 connected to the terminal end of the feed chain 5, and 12 a straw removal section that takes out waste straw in an unprocessed state through the chain 11. 13 is a paddy tank facing the grain hoisting cylinder 14; 15 is an engine with an intake cylinder 16 connected to the rear of the tank 13; 17 is a driver's seat with a driving operation unit 18 in front. .

Also, the reaping section 7 is connected and supported by the rotation fulcrum shaft 8.
A grain culm conveying mechanism 20 and a cutting blade 21 are disposed on the reaping frame 19, and the structure is such that the grain culm is continuously scraped in, the culm root is cut, and the grain culm is fed to the threshing section 4.

Furthermore, as shown in FIGS. 3 to 5, a reaping floor plate 22 is installed horizontally on the rear upper surface of the reaping frame 19, and a base plate 23 is installed horizontally on the front end of the floor plate 22 to which the cutting blade 21 is attached. The central reaping frame 1 has a swinging fulcrum axis approximately in the middle of the base plate 23.
9a via a bearing bracket 24, and a receiving blade 21a of the cutting blade 21 is mounted on the upper surface of the base plate 23.
is fixed, and a presser plate spring 2 is attached to the upper surface of the receiving blade 21a.
5, the movable blade 21b of the cutting blade 21 is supported so as to be slidable back and forth to the left and right, and the cutting blade 21 is attached to the base plate 23 so that the left and right ends of the cutting blade 21 can be raised and lowered.

A cutting blade drive case 26 is provided at the end of the reaping frame 19, and a cutting blade crankshaft 27 is protruded from the upper surface of the case 26, and the middle of the cutting blade crank plate 28 is pivotally supported on the crankshaft 27. The roller 3 is connected to one end of the roller 28 via the fulcrum pin 29.
0, and the roller 30 is fitted into the elongated hole 32 of the cutting blade crank regulating plate 31 fixed to the case 26. On the other hand, a roller 34 is provided on the other end of the crank plate 28 via a working pin 33, a ring-shaped buffer rubber 36 is provided on a knife head 35 connected and fixed to the movable blade 21b, and a pair of guide plates 38 form a guide hole 37. , 38 are erected and fixed on the rubber 36, and the rollers 34 of the working pins 33 are fitted into the guide holes 37 of the guide plates 38, 38 so as to be movable up and down and back and forth, and the crank plate 28 is swung in the left-right direction of the machine. By this, the movable blade 21b of the cutting blade 21 whose left and right ends swing vertically is slid left and right. They are connected to each other so that they can move up and down.

Next, a guide pin 39 is attached to the left end of the base plate 23.
An inverted U-shaped guide arm 40 is set upright on the reaping frame 19 on the left side of the machine, and the pin 39 and the arm 40 prevent horizontal twisting of the base plate 23. A tilt motor 4 is a tilt adjustment member that supports a drive box 42 through a bracket 41 and moves the left and right ends of the cutting blade 21 up and down to adjust the support angle.
3 is installed inside the box 42, and the base plate 23
The motor 43 is connected to the right end of the cutting blade 21 through a rack 44 and a pinion 45, and the motor 43 is controlled in forward and reverse directions to raise and lower the left and right ends of the cutting blade 21 around the central reaping frame 19a. It is configured to change the slope.

Furthermore, as shown in FIG. 6, a pendulum-type machine body tilt sensor 46 is installed on the upper surface of the front end of the threshing section 4 between the left and right crawlers 2, 2 as shown in FIG. As shown in the figure, left and right travel path sensors 47 and 48 are provided which are supported by reaping frames 19 and 19 on both outer sides of the machine body and detect the distance between each frame 19 and 19 and the reaped field surface.
A cutting blade tilt adjustment circuit 51 that controls the tilting motor 43 in forward and reverse directions via left tilt and right tilt circuits 49 and 50.
The adjustment circuit 51 controls the motor 43 based on the left and right tilt output of the tilt sensor 46.
is rotated forward and reverse, and the left and right ends of the cutting blade 21 are raised and lowered in a direction opposite to the left and right inclination of the machine body, so that the cutting blade 21 is supported substantially parallel to the surface of the harvested field. In addition, the right and left outer reaping frames 1 are
The driving path detection circuit 52 calculates the difference in ground clearance between the ground heights 9 and 19, and the detection circuit 52 and the adjustment circuit 51 cause the motor 43 to move forward and backward, so that the cutting blade is moved in the same direction as the left and right inclination of the field to be harvested. 21 is tilted to support the cutting blade 21 substantially parallel to the surface of the harvested field.

The present embodiment is constructed as described above, and when the tilt sensor 46 detects the left and right inclination of the combine machine body, the tilt motor 43 is rotated in the forward and reverse directions via the adjustment circuit 51 to reverse the left and right inclination of the combine machine body. The cutting blade 21 is tilted left and right in the direction, and the cutting blade 21 is supported substantially parallel to the surface of the cut field, so that the heights of the left and right stubbles are made substantially the same.

Further, when the running path sensors 47, 48 and the running path detection circuit 52 detect the difference in ground height between the left and right outer reaping frames 19, 19, the tilting motor is 43 in the forward and reverse directions, the cutting blade 21 is tilted left and right in a direction substantially parallel to the surface of the harvested field, so that the heights of the left and right stubbles are made substantially the same.

Note that during the control of the motor 43 by the tilt sensor 46, the output of the detection circuit 52 is interrupted, and vice versa, a priority circuit can easily be formed.

"Effects of the Invention" As is clear from the above embodiments, the present invention has the cutting blade 21 suspended horizontally on the reaping section 7 and operated reciprocatingly, the left and right ends of which are attached to the swinging fulcrum shaft 19a so as to be able to rise and fall freely, and A tilt adjustment member 43 is provided to adjust the support angle of the cutting blade 7 based on the output of a machine body tilt sensor 46 that detects left and right inclination, and a crankshaft 27 for driving the cutting blade 7 and the cutting blade 7 are connected to a guide body. The cutter blades 21
Since only the crankshaft 27 and the cutting blade 21 can be horizontally adjusted, inheritance of the harvested grain culm and support of the cutting section 7 can be carried out functionally with a simple structure.
The swing fulcrum shaft 1 is linked so that it can be raised and lowered
The cutting blade 21 can be driven at a position other than 9a, and the cutting blade 21 can be driven at a position other than 9a.
The support structure, the cutting blade 21 drive system, and the reaping part 7 drive structure are configured in a simple and functional manner, resulting in practical effects such as easier handling and cost reduction than before. there is.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a combine harvester showing one embodiment of the present invention, Fig. 2 is a plan view of the same, and Figs.
The figure is a partial enlarged sectional view of the main part, FIG. 5 is a front view of the main part, and FIG. 6 is a block diagram showing the main part electric circuit. 7... Reaping part, 19a... Reaping frame (swinging fulcrum shaft), 21... Cutting blade, 38... Guide plate (guide body), 43... Tilt motor (tilt adjustment member),
46... Aircraft tilt sensor.

Claims (1)

[Scope of utility model registration request] A cutting blade 21 that is placed horizontally on the cutting section 7 and operates reciprocally.
The left and right ends are attached to the swing fulcrum shaft 19a so as to be able to rise and fall freely, and a tilt adjustment member 43 is provided to adjust the support angle of the cutting blade 7 based on the output of a machine body tilt sensor 46 that detects the left and right tilt of the machine body, The cutting blade device for a reaper is characterized in that a crankshaft 27 for driving the cutting blade 7 and the cutting blade 7 are connected to each other via a guide body 38 so as to be vertically movable.