JPS6137018A - Harvester - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a harvester in which a reaping section is mounted on the front part of the machine body, which is moved by a traveling device, so as to be able to rise and fall.

The reaping unit mounted on the front end of the body of the harvester is usually suspended by suspending the frame of the reaping unit from a rotational fulcrum provided on the body so that it can rotate up and down about the rotational fulcrum. A hydraulic cylinder is provided between the frame of the section and the machine body, and the operation of the hydraulic cylinder causes the machine to rotate about the rotational fulcrum and perform lifting and lowering operations. In such a harvester, when adjusting the cutting height of the cutting blade device installed on the frame by raising and lowering the frame of the cutting section by operating a hydraulic cylinder, the cutting height of the cutting blade device installed on the frame is adjusted. Since the angle of the blade changes from upward to downward, it becomes oblique to the culm body of the culm planted on the ground.
There is a problem that reduces sharpness.

In order to solve this problem, the reaping section installed at the front end of the machine should be suspended so that it can move up and down parallel to the ground while maintaining an attitude parallel to the ground. When inspecting the operating part installed on the bottom side of a cutting blade device, etc., from the bottom side of the reaping section, it is necessary to move the reaping section significantly upwards to perform the work. Compared to the conventional means of raising and lowering the front end of the front end by rotating it upward, another problem arises that makes inspection work extremely inconvenient.

For this reason, when the reaping section installed at the front end of the machine is suspended from the machine so that it can be raised and lowered, the frame of the reaping section maintains an attitude parallel to the ground surface in the low range where the cutting height can be adjusted. It is desirable to move the mowing section up and down, and at a height beyond the adjustment range of the mowing height, it is desirable to rotate the mowing section around a rotational fulcrum and move up and down. A device has also been proposed, but in this way, when raising the reaping section close to the ridge to cross the ridge, or when there is uncut husk culm immediately in front of the front end of the reaping section. When the reaping section is raised high in order to change the direction of the machine at a certain position, the front end of the frame of the reaping section is displaced forward and rotated upward, causing the ridge or culm group to be raised. The front end of the reaping section may become stuck, causing damage to the reaping section, or causing the inconvenience of pulling out the culm along with the plant.In order to avoid this inconvenience, the front end of the reaping section should be A problem arises in which the machine has to be operated in such a way as to move the machine backward away from the ridge or culm and to raise the cutting section higher.

It is an object of the present invention to solve the above-mentioned problems while also solving this problem.For this purpose, the present invention has a purpose of solving the above-mentioned problems by eliminating this problem.As shown in FIG. The frame 20 of the reaping section, which is suspended from the front end of the machine body a, is suspended from the ground surface (G L)
The lifting support device C is held in a parallel position and raised while moving backward, and lowered while moving forward, and at a high position is rotated up and down about the rotation fulcrum W.
This proposes a means to mount it on the aircraft body a. .

Next, embodiments will be described in detail with reference to the drawings.

2 to 5 show a first embodiment. In the figure, a is a body of a combine harvester A which is a harvesting machine that runs on a traveling device 10, b is a reaping section mounted on the front end of the machine body a, and C is an elevating support device that suspends and supports the frame 20 of the reaping section. In addition, 11 is a threshing section consisting of a self-thresholding type threshing machine mounted on the upper surface of the machine body a, 21 is a weeding body supported on the front end of the frame 20 of the reaping section, and 22 is a rear part of the weeding body 21. 23 is a culm lifting device disposed above the cutting blade device 22 and supported on the frame 20; 24 is a culm lifting device mounted on the upper end of the frame 20 with respect to the frame 20; A shell culm conveying device for adjusting the handling depth is shown, which is supported so as to rotate up and down about a rotation fulcrum 25.

As shown in FIGS. 2 and 3, the lifting support device C has a distal end rotatably connected to the upper end side of the main body 20a of the frame 20 of the reaping section, and a base end connected to the upper end of the main body 20a of the frame 20, which is the reaping section. An upper link 31 is connected to a bracket 30 fixedly provided to the bracket 30 so as to rotate about a rotation fulcrum W;
1 and a lower link 32 parallel to the lower link 32, the upper end of which is rotatably connected to a stay 33 extending forward from the fuselage a and integral with the fuselage a, and the lower end of which is integrally connected to the lower end of the lower link 32. A suspension rod 35 is rotatably connected to the connecting shaft 34, and a hydraulic cylinder 36 whose upper end is integrally connected to the connecting shaft 34 and whose lower end is supported on the aircraft body a so as to rotate together with the lower link 32. The lower link 32 is connected to an arm 37 that is connected to the tip of the rod 36a that goes in and out, and a stopper 38 that is provided on the stay 33 to prevent the hanging rod 35 from rotating rearward from a substantially vertical position. axis 34
It consists of an abutting rod 39 provided on the lower link 32 so as to abut the hanging rod 35 in the latter half of the rotation when the lower link 32 rotates clockwise in FIG. 2.

As a result, when the arm 37 is pushed out by the operation of the hydraulic cylinder 36 from the state where the frame 20 of the reaping section is supported near the ground surface (GL) as shown in FIG. , lower link 32 and upper link 31
The frame 20 rotates upward in parallel around the connecting shaft 34 and the rotation fulcrum W, and the frame 20 rises while being displaced backward while maintaining the posture shown in FIG. When the hydraulic cylinder 36 is operated so that the rod 36a is retracted from the state position shown in FIG. With the rotations 31 and 32, the frame 20 of the reaping section moves downward while maintaining a posture parallel to the ground surface (GL) and displacing forward.

Further, in the state shown in FIG. 4 described above, when the hydraulic cylinder 36 is operated so that the rod 36a is pushed out, the abutment rod 39 provided on the lower link 32 abuts against the front surface of the suspension rod 35. Then, the lower link 32 is prevented from rotating clockwise in FIG. The action of pushing out the arm 37 causes the suspension rod 35 to rotate forward and upward about the support shaft 35a at its upper end. As a result of this rotation of the hanging rod 35, the frame 2o of the reaping section rotates significantly upwards about the rotation fulcrum W on the proximal end side of the upper link 31, as shown in FIG. It will now rotate to the state position shown in .

Therefore, when the reaping section frame 20 is in a low position,
Maintaining an attitude parallel to the ground surface (GL), it will rise while retreating and descend while moving forward, and when at a high position, it will rotate in an arc to greatly raise the front end side. .

Next, FIGS. 6, 7, and 8 show the embodiment of FIG. 2. Note that the same reference numerals in the drawings are used for the same constituent members.

In this example, the lifting support device C has a main body portion 20a of the frame 20 of the reaping section formed into a shaft tube shape, and a short pipe-shaped sheath tube 40 is slidably fitted to the upper end side of the main body portion 20a. The sheath cylinder 40 is supported at the tip of a suspension arm 41 that is pivotally supported on the machine body a so as to rotate up and down about the rotation fulcrum W. A stopper 42 is provided which abuts against each other to prevent the main body part 20a from rotating rearward about the rotation fulcrum W, and a support arm 43 is provided which projects rearward on the rear surface side of the intermediate portion of the main body part 20a.
The support arm 43 is provided with an abutting portion 44 that abuts against the lower surface of the tip of the suspension arm 41, and the support arm 43 and the lower part of the suspension arm A hydraulic cylinder 36 is installed across a support shaft 45 that is fixedly supported on a. As a result, in the state shown in FIG. 6, the rod 3 of the hydraulic cylinder 36 is
When 6a is operated to push out, the abutting portion 44 of the support arm 43
The frame 20 of the reaping section is held in the position shown in Fig. 6 until it collides with the lower surface of the tip of the suspension arm 41, and is raised while being moved backwards to reach the state shown in Fig. 7. From then on, The extending hydraulic cylinder 36 connects the support arm 43
The suspension arm 41 is rotated upward about the rotation fulcrum W through the frame 20 of the reaping section.
As shown in the figure, it is designed to be rotated largely upwards about the rotation fulcrum W.

In addition, in the embodiment apparatus of FIGS. 6 to 8, 46 is
A support provided on the fuselage a to prevent the suspension arm 41 from rotating below a predetermined rotation position, and 47 a spring connected to keep the suspension arm 41 rotated to the lower limit position of downward rotation. , 48 is a drive shaft.

Next, FIGS. 9, 10, and 11 show a third embodiment of the apparatus.

In this embodiment, the main body part 20a of the frame 20 of the reaping part is
is formed into a cylindrical shape, and the sheath cylinder 40 provided at the tip of the suspension arm 41 is fitted into the upper end side of the sleeve cylinder 40, and the rear surface of the lower end side of the main body part 20a is supported by a stopper 42 provided on the body a. A hydraulic cylinder 36' is installed between a support arm 43 provided on the rear side of the intermediate portion of 20a and a support shaft 45 provided on the body a,
By the operation of the hydraulic cylinder 36, when the main body part 20a of the frame 20 is in a low position, it slides relative to the sheath cylinder 40 supported by the suspension arm 41 and is raised and lowered obliquely, and when it is in a high position, the whole suspension arm 41 is rotated. The basic point of rotating around the fulcrum W is the same as the second embodiment, but the tip of the mouthpiece 36a of the hydraulic cylinder 36 whose base end is supported on the support shaft 45 is connected to the frame 20. When connecting to the support arm 43 provided on the main body part 20a, the fuselage a
A long hole 5 along the longitudinal direction of the lift arm 50 is attached to a connecting pin 51 that is implanted in a support arm 43 provided on the main body portion 20a at the rotating end side of the lift arm 50, which is pivotably supported for vertical rotation.
2, and a hydraulic cylinder 36 is installed across the intermediate portion of the lift arm 50 and the above-mentioned support shaft 45. Rotation is prevented by a lock pin 53 provided on the body a.

In this embodiment, when the frame 20 of the reaping section is in a low position, the main body 20 of the frame 20 is lifted up by the lift arm 50, which rotates up and down by the operation of the hydraulic cylinder 36.
a is guided by the sheath cylinder 40 (or guide cylinder) that can be supported by the suspension arm 41 and moves up and down along the axial direction of the sheath cylinder 40, and when it is at a high position, the suspension arm 41 is impacted by the rise of the lift arm 50. The combined support arms 43 rotate the suspension arm 41 up and down about the rotation fulcrum W, so that the front end side of the frame 20 can largely rotate up and down about the rotation fulcrum W.

As explained above, according to the means of the present invention, when the frame of the reaping section mounted on the front end of the body of the harvester is at a low position, it rises while retreating while maintaining a horizontal attitude to the ground surface, and rises when it is at a high position. When the frame is in the ridge, the front end rotates up and down to move up and down, so when the frame of the reaping section is raised to go over a ridge, etc., the front end of the reaping section rises while moving backward away from the ridge. This eliminates the problem of the front end of the reaping section getting stuck in the ridge and causing damage.Moreover, when the reaping section is raised to inspect each operating section of the reaping section, the front end side must be raised significantly. This makes it easier to inspect the cutting section from the bottom side.

[Brief explanation of drawings]

FIG. 1 is a detailed explanatory diagram of the present invention, FIG. 2 is a side view of an embodiment of the present invention, FIG. 3 is a perspective view of the main parts of the same device, and FIGS. 4 and 5 are the same as the above device. An explanatory diagram of the operation, FIG. 6 is a partially cutaway side view of the device of the second embodiment, and FIGS. 7 and 8 are
FIG. 9 is a partially cutaway side view of the device of the third embodiment, and FIGS. 10 and 11 are explanatory diagrams of the operation of the device according to the above. Explanation of drawing symbols A... Combine harvester a... Machine body b... Reaping section C... Lifting support device 10... Traveling device 11...
・Removal part 20... Frame 20a... Main body part 21... Grass splitting body 22... Cutting blade device 2
3... Culm lifting device 24... Culm conveying device 25.
...Rotation fulcrum 30...Bracket 31, 32...
・Link 33... Stay 34... Connection shaft 35
...Hanging rod 36...Hydraulic cylinder 36a...Rod 37...Arm 38...Stopper 39
...Abutting portion W...Rotation fulcrum 40...Sheath tube 41...Suspension arm 42...Stopper 43.
...Support arm 44...Abutment part 45...Support shaft 4
6 River support 47... Spring 48... Drive shaft 50... Lift arm 6 51... Connection pin 52... Long hole 53... Lock pin

Claims (1)

[Claims] The frame of the reaping section, which is suspended from the front end of the traveling machine by a traveling device, is held in a position parallel to the ground at a low level, raised while moving backward, and lowered while moving forward, and rotated at a high level. A harvesting machine that is mounted on a machine body using a lifting device that rotates up and down around a fulcrum.