JPH0642805B2 - Combine harvester suspension - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a reaper suspension device for swingably supporting a reaper with respect to a thresher and a traveling device in a combine harvester.

The combine harvester is a harvester that harvests and transports grain culms in the field.
It is composed of a threshing machine for threshing and sorting the conveyed grain culm, and a traveling device that carries these for traveling. Since the reaper needs to raise and lower the reaping position in order to adjust the mowing height and avoid obstacles when traveling on the road, etc., the supporting member supporting the reaping device is provided with a suspension device for the thresher. And a traveling device so as to be swingable. That is,
A pipe-shaped reaper supporting member having a transmission shaft penetratingly supported by a bearing provided at an upper front end of the thresher so as to be swingable and extending obliquely downward, and a lower end portion of the supporting member and a traveling device. The space between them is 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, centering around the bearing. The reaper is configured to swing and move up and down.

In a combine equipped with such a reaper suspension device, it is necessary to remove the reaper from the thresher and the traveling device for maintenance and storage. In this case, in the conventional case, one operator operates the operation lever of the pressure cylinder in the cockpit to lower the reaper, and at the same time, another operator links the reaper support member and the lower end thereof. After removing the connection with the, the upper end of the reaper support member was removed from the bearing on the thresher side, so not only two workers were required, but also the operation of the two people was successful. There was a drawback that the reaper could not be removed smoothly because they were not connected.

The present invention has been made in view of the above points, and the upper end of the reaper is supported by the lower end of a reaper supporting member that is swingably and detachably supported by the threshing machine to support the reaper. The lower end and the traveling frame side are connected by a swingable reaper suspension member, and the operating end of the piston rod is pivotally attached to the reaper suspension member. In addition to connecting, a foot movement operating member that is located below the manual operation lever and supported by the mower suspension member side to release the engagement between the mower support member and the mower suspension member by foot movement is provided. It is possible to remove the reaper from the machine by manipulating the foot operation member and the manual operation lever with the feet and hands of the operator, thereby saving labor and improving workability in the reaper removal work. Providing a mower suspension for an ivy combine harvester It is intended. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 6 show an embodiment of a reaper suspension device according to the present invention. FIG. 1 is a side view of a combine that implements the same, FIG. 2 is a plan view of the same, and FIG. 3 is a reaper support. FIG. 4 is a front view of the vicinity of the upper end of the member, FIG. 4 is a side view of the same, FIG. 5 is a front view of the reaper suspension device, and FIG.
In the figure, a combine 1 is provided with a pair of left and right traveling crawlers 5 composed of a driving wheel 2, a plurality of rolling wheels 3, and an endless crawler belt 4 suspended on these rotating wheels. A thresher 7 is mounted on the frame 6. In the frame 8 of the threshing machine 7, a threshing device for threshing the grain culms cut by the reaper 14 described later and a sorting device for sorting the threshed grains are stored,
On the side of the frame 8, an endless belt 9 for conveying threshed culms is stretched. Further, behind the frame 8, there is provided a straw cutter 10 for cutting threshed grain culms, that is, waste straw and spraying it to the field. Reference numeral 11 denotes a driver's seat on which the driver is seated, which is provided on the side of the front end portion of the threshing machine 7, and an operating device 12 including various operating levers and instruments is arranged in front of the driver's seat. Among the operation levers, a mowing up-and-down lever 13 as a manual operation lever for operating a hydraulic cylinder 42 as an up-and-down drive source of the mowing machine 14 which will be described later is arranged at the outer front end portion of the operation device 12.

The reaper, which is generally designated by reference numeral 14, has a plurality of grass bodies 15 for scraping off the grain culms in the field at the front end thereof, a raising device 16 for raising the laid grain culms, and a root of the raised grain culms. It is provided with a clipper-shaped cutting blade 17 for cutting the part, and a grain culm transporting device 18 before and after transporting the harvested grain culm to the threshing machine 7, and each of the grain culm transporting devices 18 except for the latter part thereof. The entire device is composed of a plurality of weed rods 19 that extend forward along the ground.
Supported by the reaper support member 20.

Therefore, the reaper support member 20 and the reaper suspension device supporting the reaper support member 20 will be described. A bearing 22 is fixed to an upper end surface of a gear box 21 which is supported by the traveling frame 6 and which drives the drive wheels 2 and in which a transmission and a transmission are housed. A pair of left and right shaft support portions 22a, 22b formed in a U shape that open toward each other are integrally provided. Cylinders 23a, 23b at both ends of a reaping input gear case 23 integrally fixed to the upper end of the reaper supporting member 20 are rotatably and detachably rotatably supported by the shaft supporting portions 22a, 22b. In this cylindrical portion 23a, 23b,
The reaping input shaft 24 penetrates and is rotatably supported.
A pulley 25, which is drivingly connected to the driving side by a belt, is fixed to the reaping input shaft 24.
4 is drivingly connected to a transmission shaft 26 which is pierced through the reaper supporting member 20 and is axially supported by a gear in a gear case 23. Plate bearings 27 project from the left and right shaft support portions 22a and 22b by integral formation, and each plate bearing 27 has a suspension plate 28 formed in a triangular plate shape by a pin 29. It is pivotally supported. Reference numeral 30 denotes a pipe-shaped connecting stay that connects the left and right suspension plates 28 and integrates them. A locking member 32 having a cutting groove 32a at its tip end is rotatably mounted on a pin 31 planted at the free ends of the left and right suspension plates 28 via a bush 33. Above is
A torsion coil spring 35 for imparting a turning force to the locking member 32 in a direction for engaging the lock groove 34 on the bearing 22 side with the locking member 32 has a suspension plate 28 and the locking member 32 at both ends.
And are respectively engaged with and mounted. Reference numeral 36 is a stopper for restricting the rotation of the locking member 32. One ends of the left and right engaging members 32 are integrally connected by a U-shaped handle 37. As shown in FIG. 4, the handle 37 and the connecting stay 30 are gripped. By bringing them closer, the locking member 32 is rotated against the elastic force of the torsion coil spring 35, the engagement between the cut groove 32a and the lock pin 34 is released, and the suspension plate 28 can be rotated. ing. Since the locking member 32 has a tapered tip end, when the cut groove 32a and the lock pin 34 are engaged with each other, the suspension plate 28 is rotated without gripping the handle 37. Just engage. The upper grain culm transporting device 18 is supported and driven by the bearing 22 side.

Next, the lower suspension device of the reaper will be described. A pair of support arms 3 protruding forward from the front end of the traveling frame 6.
At the front end of 8, a suspension arm 39 as a reaper suspension member formed in an H shape by a pair of arcuate vertical members 39a and a horizontal member 39b connecting the central portions thereof is rotated by a pin 40. A piston rod 43 of a hydraulic cylinder 42 pivotally supported on the traveling frame 6 is pivotally mounted on a plate 41 which is pivotally supported freely and is integrally formed on an end portion of the lateral member 39b. Reference numeral 44 is a connecting arm formed in an H shape with a pair of vertical members 44a and a horizontal member 44b connecting the central portions thereof, and a pin is provided at the lower end of the vertical member 39a of the suspension arm 39. 45 is pivotally attached to each vertical member 44a, and a coupling pin 46 and a pin 47 as a foot operation member are provided at the upper end of each vertical member 44a.
And are integrally formed so as to project horizontally. Of the left and right pins 46, 47, the pin 47 on the operating device 12 side
Is extended below the reaper up / down lever 13 so that the reaper up / down lever 13 can be operated by the foot while operating the hand up / down lever 13. On the other hand, a connecting hook 49 provided with a U-shaped opening 49a directed obliquely downward from the both ends of the pre-crop frame 48 orthogonal to the lower end of the reaper supporting member 20 so as to form an inverted T shape. Are each projected upwards,
The pins 46 and 47 are engaged with the U-shaped opening 49a, respectively, and the pins 50 prevent the pins from coming off from the opening 49a. When the pin 50 is inserted, the suspension device and the reaper support member 20 are integrated,
When the piston rod 43 of the hydraulic cylinder 42 is moved back and forth, the reaper supporting member 20 swings through the suspension arm 39 and the connecting arm 44, and the pin 50 is pulled out and the pin 47 is stepped on, so that the pin 46, 47 is the opening
It is released from 49a and the reaper support member 20 is disengaged from the suspension. In this case, the piston rod 43 of the hydraulic cylinder 42 needs to be retracted.

In the combine 1 configured as described above, the grain culms harvested by the harvesting machine 17 of the reaper 14 are transported by the grain culvert transporting device 18, and transferred to the transporting endless belt 9 while being transported and threshing by the threshing machine 7. Be sorted. In this case, the cut groove 32a of the locking member 32 is urged by the torsion coil spring 35 to lock the lock pin 34.
Since the suspension plate 28 closes the openings of the shaft support portions 22a and 22b by engaging with, the mower support member 20 is attached to the shaft support portion.
It does not fall off from 22a and 22b. When the piston rod 43 of the hydraulic cylinder 42 is moved back and forth, the reaper supporting member 20 swings via the suspension arm 39 and the connecting arm 44, and the cutting height by the cutting blade 17 is adjusted.

Next, the removing operation of the reaper 14 will be described. First, weed rod 1
After preparing the pedestal 51 below 9, the suspension plate 28
When the connecting stay 30 and the handle 37 are gripped by hand and a gripping force is applied, the handle 37 is pulled to the chain line position,
By rotating the locking member 32 against the elastic force of the torsion coil spring 35, the engagement between the cut groove 32a and the lock pin 34 is released, and the suspension plate 28 can be rotated. Then, this is rotated in the direction of the arrow in FIG. 4, and further rotated until it goes down beyond the position of the chain line and hangs in the opposite direction. By doing so, the shaft support portions 22a and 22b of the bearing 22 are opened forward.
Next, after removing the pin 50 at the lower end of the reaper supporting member 20, the reaper up / down lever 13 is operated to retract the piston rod 43 of the hydraulic cylinder 42 as shown in FIG. Then, the reaper 14 descends and the weeding rod 19 is supported by the receiving stand 51. At the same time, when the worker steps on the pin 47 located below the mowing up-and-down lever 13, the pins 46 and 47 and the U-shaped opening 49a are disengaged from each other and the connecting arm 44 is connected to the main body side. Connection hook 4
The reaper 14 side with 9 separates. Therefore, the cockpit 11
When seated on and retracting the machine base, as described above, the shaft support 22
Since the a and 22b are open to the front, the machine base moves backward leaving the reaper 14, and the removal of the reaper 14 is completed.

As is apparent from the above description, according to the present invention, in the combine harvester suspension device, the upper end portion is provided with the thresher 7.
The reaper 14 is supported by the lower end of a reaper supporting member 20 that is swingably and detachably pivotally supported by the reamer, and the reamer is freely swingable between the lower end of the reaper 14 and the traveling frame 6 side. A pressure cylinder 42 connected by a suspension member 39 and having a working end of a piston rod 43 pivotally attached to the reaper suspension member 39 side.
The manual operation lever 13 on the upper part of the threshing machine 7 is coupled to the threshing machine 7, and the mower support member 2 is located below the manual operation lever 13 and supported by the mower suspension member 39 by foot movement.
0 and the reaper suspension member 39 are disengaged from the foot movement operating member 4
7 is provided, and the pin 47 and the reaper up / down lever 13 are operated by one operator's foot and hand to separate the reaper 14 from the main machine, which is conventionally performed by two people. The detaching work of the reaper 14 can be carried out by one person, and the labor can be saved, and the movement of the hand and foot is well linked because it is performed by one person, and the reaper 14 can be detached very smoothly. Be done.

[Brief description of drawings]

1 to 6 show an embodiment of a combine harvester suspension device according to the present invention. FIG. 1 is a side view of a combine harvester in which this is implemented, FIG. 2 is a plan view of the same, and FIG. 4 is a front view of the vicinity of the upper end of the machine supporting member, FIG. 4 is a side view of the same, FIG. 5 is a front view of the reaper suspension system, and FIG. 6 is a side view of the same. 1 …… Combine, 13 …… Mowing up / down lever, 14 ……
Harvester, 20 ... Harvester support member, 44 ... Connecting arm, 46, 47 ... Pin, 49 ... Connecting hook, 49a ...
... U-shaped opening.

Claims (1)

[Claims] 1. A reaper support member (20) having an upper end swingably and detachably supported by a bearing (22) on the side of a thresher (7) and supporting the whole reaper (14) at the lower end. A reaper suspension member having one end pivotably supported on the side of the traveling frame (6) below the thresher (7) and the other end rotatably and detachably connected to the lower end of the reaper (14). (39), a pressure cylinder (42) having the working end of the piston rod (43) pivotally attached to the reaper suspension member (39), and the thresher (7) connected to the pressure cylinder (42). The manual operation lever (13) arranged at the top and this manual operation lever
(13) A foot movement operating member which is located below the mower suspension member (39) and is disengaged from the mower support member (20) and the mower suspension member (39) by foot movement. (47) A combine harvester suspension device characterized by being provided with.