JPH0347476Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reaper suspension system for swingably supporting a reaper with respect to a threshing machine and a traveling device in a combine harvester.

A combine harvester is composed of a reaping machine that harvests and transports grain culms in a field, a threshing machine that threshes and sorts the transported grain culms, and a traveling device that carries them and runs. Reapers need to adjust the cutting height and avoid obstacles when driving on the road.
Since it is necessary to raise and lower the reaping position, a support member that supports the reaping position is swingably supported by the threshing machine and the traveling device by means of a suspension device. That is,
A pipe-shaped reaper support member, through which the transmission shaft passes, is swingably supported by a bearing provided at the upper front end of the thresher and extends diagonally downward. They are connected by a bendable link and a pressure cylinder that expands and contracts the link. By operating the pressure cylinder from the cockpit, the support member expands and contracts the link while moving the bearing around the bearing. The reaper is configured to move up and down by swinging.

In a combine harvester equipped with such a reaper suspension system, the reaper may be removed from the thresher and the traveling device for maintenance, storage, etc. In this case, the connection between the suspension system and the pressure cylinder must be disconnected. However, in conventional suspension systems, the bearing at the upper end of the reaper support member is divided into two halves, joined on a horizontal plane, and the joints are tightened with bolts. Each time, the bolts had to be loosened and tightened to split the bearing in half and then the reaper had to be lifted upwards, which was a tedious task and required a lot of effort and time. In addition, in the case where the reaping input pulley shaft is supported by a half-shaped bearing, the belt stopper must be removed to remove the belt attached to the reaping input pulley every time the reaper is disconnected. When you reinstall the reaper on the machine, you have to adjust the position of this belt stopper and attach it, which is not only troublesome, but also causes people to forget to attach the belt stopper, and the belt stops during harvesting work. There was a risk of an accident occurring due to it coming off.

The present invention was developed in view of the above points, and consists of opening the pivot portion of the bearing that rotatably and detachably supports the upper end of the reaper support member to the front, and attaching a swingable lid to the pivot portion of the bearing. By attaching a locking member at the closed position, it is easy to attach and detach the reaper to and from the machine, reducing labor and ensuring work safety. By providing a belt stopper on the lid body that prevents the belt from coming off, it is possible to attach and detach the reaper with the belt stopper attached, thereby reducing labor and preventing accidents caused by neglecting to attach the belt stopper. A reaper suspension system for an ivy combine is provided. Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 6 show an embodiment of the reaping machine suspension system according to the present invention, FIG. 1 is a side view of a combine harvester in which this is implemented, FIG.
The figure is a front view of the vicinity of the upper end of the reaper support member, FIG. 4 is a side view, FIG. 5 is a front view of the suspension device, and FIG. 6 is a side view. In the figure, the combine 1 is equipped with a pair of left and right running crawlers 5 each consisting of a driving wheel 2, a plurality of rolling wheels 3, and an endless crawler track 4 stretched between these rotating wheels, and the left and right running crawlers 5 are connected. A threshing machine 7 is mounted on the traveling frame 6. Inside the frame 8 of the threshing machine 7, a threshing device for threshing grain culms harvested by a reaper 14, which will be described later, and a sorting device for sorting the threshed grains are housed. An endless conveyor belt 9 for conveying the threshing culms is stretched over the conveyor belt. Further, at the rear of the frame 8, a straw cutter 10 is provided for cutting off the threshed grain culms, that is, the straw, and scattering it on the field. Reference numeral 11 denotes a driver's seat where the driver sits, and is provided on the side of the front end of the threshing machine 7. In front of the driver's seat 11, an operating device 12 including various operating levers and instruments is arranged. Among the operating levers, a reaping up/down lever 13 that operates a hydraulic cylinder 42 as a driving source for up and down of the reaping machine 14, which will be described later, is disposed at the outer front end of the operating device 12.

The reaper, which is designated by the reference numeral 14 as a whole, has a plurality of cutting bodies 1 at its front end that scrape through the grain culms in the field.
5, and a raising device 16 for raising the fallen grain culm.
, a clipper-like cutting blade 17 for cutting the root part of the erected grain culm, and a grain culm conveying device 18 before and after conveying the cut grain culm toward the threshing machine 7, etc. Each device, except for the rear part of the device 18, has a plurality of branching rods 1 extending forward along the ground.
9 and is supported by a reaper support member 20.

Therefore, this reaper support member 20 and the reaper suspension system that supports it will be explained. A gearbox 21 supported at the front end of the traveling frame 6
A transmission device and a side clutch device are housed in the interior, and the left and right traveling drive shafts, which are output shafts of the side clutch device, are connected to the driving wheels of the traveling crawler 5. 2 are each pivoted. Further, two V-pulleys 23 are rotatably attached to another output shaft 22 provided in the gearbox 21. A bearing 24 whose upper half is formed into a U-shape is mounted on the upper end surface of the gearbox 21.
is fixed, and at the upper end of this bearing 24,
A pair of left and right shaft supports 24a and 24b formed in a U-shape that opens toward the front are integrally provided. Both end cylindrical parts 25a, 25 of a reaping input gear case 25, which is integrally fixed to the upper end part of the reaping machine support member 20, are attached to the shaft supports 24a, 24b.
b is rotatably and removably supported on a shaft, and a reaping input shaft 26 having a double structure of an outer tube and a shaft passes through the cylindrical portions 25a and 25b and is rotatably supported on the shaft. . V pulleys 27 and 28 are fixed to the outer tube and shaft of the reaping input shaft 26, respectively, and a belt tension type clutch is connected between these V pulleys 27 and 28 and each strip of the V pulley 23. U-belts 29 and 30 having belts 29a and 30a are stretched respectively. The outer tube of the reaping input shaft 26 is drivingly connected to a transmission shaft 31 which is supported by passing through the reaper support member 20 by a gear within the gear case 25. 2
The shaft 6 is drivingly connected to the rear section of the grain culm conveying device 18 via a transmission device (not shown). Note that the rear stage portion of the grain culm conveying device 18 is supported on the bearing 24 side. The left and right shaft supports 24a, 24b
Plate bearings 32 are integrally formed and project from the plate bearings 32, and each plate bearing 32 has a suspension plate 33 formed in a triangular plate shape.
is pivotably supported by a pin 34. 35 is a pipe-shaped connecting stay that connects and integrates the left and right suspension plates 33. A locking member 37 having a groove 37a at the tip is attached to the pin 36 implanted at the free ends of the left and right suspension plates 33.
is freely rotatably mounted on the bush 38, and applies a rotational force to the locking member 37 in the direction of engaging the cut groove 37a with the lock pin 39 on the bearing 24 side. A torsion coil spring 40 has both ends connected to the suspension plate 33 and the locking member 3.
7, respectively. 41
is a stopper that restricts rotation of the locking member 37. One end of the left and right locking members 37 are integrally connected by a U-shaped handle 42, and as shown in FIG. 4, the handle 42 and the connecting stay 35 are grasped and brought close together. As a result, the locking member 37 rotates against the elastic force of the torsion coil spring 40, and the engagement between the cut groove 37a and the lock pin 39 is released, and the suspension plate 33 is configured to be able to rotate. There is. Note that the locking member 37 is
By forming the tip into a tapered shape, the kerf 3
7a and the lock pin 40 can be engaged by simply rotating the suspension plate 33 without grasping the handle 42.

A belt stopper 43 formed by bending a flat plate is provided on the suspension plate 33 on the side of the V pulleys 27 and 28 to protrude outward. At the closed position of the suspension plate 33, the V pulley 27,
Its position is set so as to be close to the circumferential surface of V-belt 28, and is configured to prevent the V-belts 29, 30 from coming off. When releasing the suspension plate 33, the belt stopper 43
Since the V-belts 29 and 30 are separated from each other, it becomes possible to attach and detach the V-belts 29 and 30.

Next, the lower suspension system of the reaper will be explained.
At the front ends of the pair of support arms 44 that protrude forward from the front end of the traveling frame 6, there is a horizontal member 45b that connects a pair of arcuate vertical members 45a and their central parts.
The suspension arm 45 formed in an H-shape is attached to the pin 4.
6, and is rotatably supported by the horizontal member 4.
The plate 47 integrally formed at the end of 5b includes
A piston rod 49 of a hydraulic cylinder 48, which is pivotally supported on the traveling frame 6, is pivotally mounted. Moreover, what is designated by the reference numeral 50 is a connecting arm formed in an H-shape by a pair of vertical members 50a and a horizontal member 50b connecting the central parts thereof, and is connected to a pin at the lower end of the vertical member 45a of the suspension arm 45. It is pivoted at 51,
A coupling pin 5 is provided at the upper end of each vertical member 50a.
2 and 53 are integrally formed and protrude horizontally. Of the left and right pins 52, 53, the pin 53 on the operating device 12 side extends below the reaping up/down lever 13 so that the reaping up/down lever 13 can be operated with the foot while operating the reaping up/down lever 13 by hand. On the other hand, from both ends of the pre-reaping frame 54 which is orthogonal to the lower end of the reaper support member 20 so as to form an inverted T-shape, a connecting hook 55 is provided with a U-shaped opening 55a facing diagonally downward. are provided to protrude upward, respectively, and the pins 52 and 53 are respectively engaged with the U-shaped openings 55a of the pins 56.
is prevented from coming out of the opening 55a. When the pin 56 is inserted, the suspension device and the reaper support member 20 are integrated, and when the piston rod 49 of the hydraulic cylinder 48 is moved back and forth, the reaper support member is connected via the suspension arm 45 and the connecting arm 50. 20 swings, and by pulling out the pin 56 and stepping on the pin 53, the pins 52 and 53 are released from the opening 55a, and the reaper support member 20 is removed from the suspension system.
In this case, the piston rod 49 of the hydraulic cylinder 48 must be retracted.

In the combine harvester 1 configured as described above, the grain culm cut by the cutting blade 17 of the reaper 14 is conveyed by the grain culm conveying device 18, and is threshed by the threshing machine 7 while being taken over by the endless conveying belt 9 and conveyed. be sorted out. In this case, the cut groove 37a of the locking member 37 is engaged with the lock pin 39 under the bias of the torsion coil spring 40, and the suspension plate 33 is attached to the shaft supports 24a, 24.
Since the opening b is closed, the reaper support member 20 will not fall off from the shaft supports 22a, 22b. Further, when the piston rod 49 of the hydraulic cylinder 48 is moved back and forth, the reaper support member 20 swings via the suspension arm 45 and the connecting arm 50.
The cutting height by the cutting blade 17 is adjusted. In addition, the V belts 29 and 30 stretched over the V pulleys 27 and 28
The belt stopper 43 causes the V pulley 27,
It is regulated to deviate from 28.

Next, the operation for removing the reaper 14 will be explained. First, a pedestal is prepared below the grass dividing rod 19, and then when the connecting stay 35 of the suspension plate 33 and the handle 42 are grasped by hand and grip force is applied, the handle 42 is drawn to the chain line position and the locking member 37 When the lock pin 39 rotates against the elastic force of the torsion coil spring 40, the engagement between the cut groove 37a and the lock pin 39 is released, and the suspension plate 33 becomes rotatable. Then, it is rotated in the direction of the arrow in FIG. 4, and further rotated until it goes beyond the chain line position and hangs down to the opposite side.
By doing this, the shaft supports 24a, 2 of the bearing 22
4b opens forward. When the suspension plate 33 is opened, the belt stopper 43 integrated therewith is separated from the V-pulleys 27, 28, so that the V-belts 29, 3
0 to disconnect the reaper support member 20 and gearbox 21 sides.

Next, after removing the pin 56 at the lower end of the reaper support member 20, the reaping up/down lever 13 is operated to move the piston rod 49 of the hydraulic cylinder 48 backward, the reaper support member 20 swings and the reaper 14 is lowered. Then, the grass dividing rod 19 is supported on the pedestal. At the same time, when the operator steps on the pin 47 located below the reaping up/down lever 13 with his foot, the engagement between the pins 52, 53 and the U-shaped opening 55a is released, and the side of the machine where the connecting arm 50 is located is released. and the side of the reaper 14 where the connecting hook 55 is located are separated. Then, when I sit in the cockpit 11 and move the aircraft backwards, as mentioned above, the shaft support 24
Since a and 24b are opened forward, the machine base retreats leaving the reaper 14 behind, and the removal of the reaper 14 is completed.

After performing maintenance etc. on the reaper 14, the reaper 1
4 on the machine side, move the machine forward and connect the lower suspension system by the reverse action of disconnection, and then hook the V belts 29 and 30 around the V pulleys 27 and 28. Then, the suspension plate 33 is closed and locked by the locking member 37. In this case, due to the closure of the suspension plate 33, the belt stopper 43, which is integrated with the suspension plate 33, correctly returns to the position before the reaper was disconnected.
The relative position with the V pulleys 27 and 28 is maintained with high precision.

As is clear from the above description, according to the present invention, in the reaper suspension system of a combine, the shaft supports 24a and 24b of the bearing 24 that rotatably and detachably supports the upper end of the reaper support member 20 are moved forward. By attaching a lid body that can be opened and pivoted and a locking member 37 in the closed position, the lid body can be simply rotated without loosening bolts or lifting the reaper 14. Since the reaping machine 14 can be attached to and detached from the main machine with a simple operation, the labor required is greatly reduced compared to the conventional method, and the safety of the attaching and detaching work is improved. Also, belts 29 and 30 attached to the reaping input pulley coaxial with the bearing 24
By providing the belt stopper 43 on the lid body to prevent the belt stopper 43 from coming off, the reaper 14 can be attached and detached with the belt stopper 43 attached. Since the belt stopper 43 can be returned to the position with high precision, the trouble of attaching and detaching the belt stopper 43 can be saved and the labor required can be reduced, and there is no risk of forgetting to attach the belt stopper 43, thereby preventing accidents. functions can be ensured at all times.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the harvester suspension system for a combine harvester according to the present invention. FIG. 4 is a front view of the vicinity of the upper end of the machine support member, FIG. 4 is a side view, FIG. 5 is a front view of the reaper suspension system, and FIG. 6 is a side view. DESCRIPTION OF SYMBOLS 1... Combine harvester, 7... Thresher, 20... Reaper support member, 24... Bearing, 24a, 24b...
...Axis support, 26...Reaping input shaft, 27, 28...
V pulley, 33...suspension plate, 37...locking member, 43...belt stopper.

Claims (1)

[Scope of utility model registration request] The upper end bearing portion of the reaper support member that pivotally supports the reaping input shaft is rotatably and detachably supported by a front-opening shaft support provided on the thresher side, and the opening end of the shaft support is oscillated to open and close. A movable lid body and a locking member that locks the lid body in an open end closed position are provided, and a locking member is provided on the lid body and close to the circumferential surface of the reaping input pulley on the reaping input shaft in the closed position. A reaper suspension device for a combine harvester, characterized in that a belt stopper is provided.