JP3367175B2 - Grain stalk transport device in mowing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain culm conveying device in a harvesting device such as a combine. 2. Description of the Related Art Conventionally, a mowing device provided on a combine or the like has a cutting power transmission case in a left-right direction and a mowing power transmission case.
A reaping device is formed by integrally forming a scraping device, a grain culm transport device, a cutting blade device, a raising device, a weeding device, and the like, which are driven and driven by the stalk. The grain culm transport device is provided for transporting the harvested grain culm from the upper side of the cutting blade device located forward to the rearward. The grain culm transport device includes an endless transport device configured by winding a transport chain around a drive wheel, an idler wheel, and the like, and a holding rod disposed to face the transport chain of the endless transport device. The harvested culm is clamped between the transport chain and the clamping rod of the endless transport device, and the harvested culm is transported rearward by driving the transport chain. [0003] As described above, in the conventional stalk conveying device of the reaping device, both the endless conveying device and the clamping rod facing the culm conveying device are fixed in position with respect to the reaping device. Have been. That is, the distance between the endless transport device and the holding rod is set to be constant, and this distance cannot be easily changed. Accordingly, when a large amount of harvested grain culm is taken into the grain culm transport device, clogging of the transported grain culm easily occurs between the endless transport device and the holding rod. In addition, in the maintenance work for removing such clogging, it is not easy to widen the interval between the endless transport device and the holding rod.
Thus, the grain culm transport device in the conventional mowing device,
Not only can the reaping work not continue smoothly, but also the maintenance work is hindered, and the reaping work is made extremely inefficient. The present invention employs the following technical means in order to solve the above-mentioned problems.
That is, in the reaping device 5 provided with the grain culm transport device 4 for clamping the culm cut by the cutting blade device 1 by the endless transport device 2 and the clamping rod 3 and transporting the grain stem rearward, the endless transport device 2 is replaced by A biasing means 7 which is configured to be movable in a distance direction with respect to the holding rod 3, and biases the endless conveying apparatus 2 in a direction approaching the holding rod 3 by the tension of the endless belt 6 accompanying the driving of the endless conveying apparatus 2. And a configuration of a grain culm conveying device in a reaper. When performing a cutting operation, at least the cutting blade device 1 and the culm conveying device 4 of the cutting device 5 are driven. In this state, the planted grain culm is cut by the cutting blade device 1, and the grain culm is clamped by the endless transport device 2 and the clamping rod 3 of the grain culm transport device 4 and transported rearward. The grain culm after transportation is subjected to an appropriate treatment such as threshing in a combine, for example. During such a mowing operation, the endless transport device 2 is configured to be able to move in a distance direction with respect to the holding rod 3.
Further, the endless belt 6 is urged by the urging means 7 in a direction approaching the holding rod 3 by the tension of the endless belt 6 accompanying the driving of the endless transporting device 2. Therefore, when the amount of the transported culm decreases, the endless transporting device 2 automatically moves in the direction approaching the holding rod 3, and the distance between the endless transporting device 2 and the holding rod 3 is properly maintained. be able to. When a large amount of harvested grain culm is taken into the grain culm transport device 4, the endless transport device is pressed against the transported grain culm against the urging force of the urging means 7. 2 is moved away from the holding rod 3.
As a result, the distance between the endless transport device 2 and the holding rod 3 is expanded, and clogging of the transported grain can be prevented. Further, when the endless transporting device 2 stops driving due to the end or interruption of the harvesting operation, the tension of the endless belt 6 is lost, so that the urging means 7 clamps the endless transporting device 2. The bias in the direction approaching 3 is cut off. Thus, the endless transporting device 2 can be easily and manually moved away from the holding rod 3, and the interval between the endless transporting device 2 and the holding rod 3 can be widened, so that maintenance work can be easily performed. As described above, the mowing operation can be smoothly continued, the maintenance operation can be easily performed, and the efficiency of the mowing operation can be greatly improved. An embodiment of the present invention will be described in detail with reference to a combine. The combine body 8 is provided with a machine base 10 above the left and right traveling devices 9, 9 of an endless track type, and a threshing device 11 and a grain storage device 12 are juxtaposed above the machine base 10, Further, the control unit 13 and the prime mover 14 are provided. A mowing device 5 is provided in front of the threshing device 11 so as to be movable up and down. The main support frame of the mowing device 5 includes a mowing transmission case 15 formed in a tubular body in the left-right direction, and a left and right front and rear extending from the vicinity of both right and left ends of the mowing transmission case 15. Frames 16, 16 and the left and right front and rear frames 16, 1
6 Front horizontal frame 1 with its left and right ends connected to the front end
7 and a weeding pipe 18 extending forward from a plurality of locations in the left-right direction of the front horizontal frame 17. Then, a main transmission cylinder 19 is erected from the middle part in the left and right direction above the mowing transmission case 15. The upper end of the main transmission cylinder 19 is pivotally mounted on the machine body 8 so as to be vertically rotatable, and the mowing device 5 is moved up and down by the expansion and contraction operation of a hydraulic cylinder 20. Also, the reaping transmission case 1
From the middle upper part of 5, a raising transmission cylinder 21 is erected. The upper end of the raising transmission cylinder 21 is connected to the upper end of a lug-type raising device 22 via a bevel case. On the other hand, in front of the front horizontal frame 17, the cutting blade device 1 is mounted over the front horizontal frame 17 and the weeding pipe 18. The cutting blade device 1 comprises a movable upper blade 23 and a movable lower blade 24 in the form of a clipper, and the upper blade 23 and the lower blade 24 are separated from the cutting power transmission case 15 by A reciprocating sliding drive is performed in opposite directions via the swing arm 25. Incidentally, 26, 2
Reference numeral 7 denotes a knife bar for slidingly guiding the upper blade 23 and the lower blade 24 in the left-right direction, respectively.
Is a blade holder for pressing the upper blade 23 and the lower blade 24 to eliminate a gap. Thus, the harvesting device 5 is provided with the grain culm transport device 4. When the cutting device 5 is of the three-row cutting adaptive type, two culm conveying devices 4 and 4 are provided on the left and right of the reaping device, and two reaping culms collected and conveyed by the one cereal conveying device 4 are provided. In this case, the cut grain culm of one line collected and conveyed by the other grain culm conveying device 4 is joined at the conveyance end portion. The other culm conveying device 4 has a pipe frame 29 with a scraping wheel 30 at a front end thereof and a floating sprocket 31 coaxially integrated with the scraping wheel 30.
And a driving sprocket 32 driven by the mowing transmission case 15 is disposed at an intermediate portion, and a floating roller 33 is supported at a rear end portion of the driving sprocket 31, the driving sprocket 32, and the floating roller. An endless band 34 (conveying chain) is wound around the lathe 33. 35 is a tension roller,
36 is a tension arm provided rotatably about the drive sprocket 32 axis, 37 is a tension spring,
38 is a chain guide rail. Further, a holding rod 39 is provided to face the chain guide rail 38. The holding rod 39
Is a supporting frame 4 for supporting the intermediate scraping wheel 40.
1, the chain guide rail
To support the ball. The chain guide rail 38
The portion between and the holding rod 39 is a grain stalk holding and conveying passage. Also,
The rake wheel 40 is driven by meshing with the rake wheel 30. Thus, the one grain culm conveying device 4 is configured as follows. First, a floating roller is attached to the rear end of the pipe frame 44 having the chain guide rail 43.
The mounting bracket 45 and the mounting stay 46 are mounted. And, the front end of the pipe frame 44 and the reaping transmission case 15
And a supporting stay 47 provided from the front side is axially connected by a front link arm 48. Further, a mounting stay 46 at the rear end of the pipe frame 44 and a supporting stay 49 provided on the main transmission cylinder 19 are axially connected by a rear link arm 50. As a result, the pipe frame 44 is supported by the parallel link with its tip end facing above the scraping wheel 51. 52 is a driving sprocket driven by the cutting transmission case 15; 53 is a tension arm 54 rotatably provided around the axis of the driving sprocket 52; A tension spring 56 provided between the case 15 and the other end of the tension arm 54,
9 is a floating roller. Then, the endless belt 6 (transport chain) is wound around the floating sprocket 57, the floating roller 45, the driving sprocket 52, the tension roller 53, and the floating roller 56 provided coaxially with the scraping wheel 51. Thereby, the endless transport device 2 and the urging means 7 are configured. In addition, the chain guide rail 43
The holding rod 3 is provided in opposition to. The holding rod 3 is resiliently supported toward the chain guide rail 43 by a holder 58 attached to a support frame 41 for supporting an intermediate scraping wheel 40. A portion between the endless belt 6 (conveying chain) guided by the movement of the chain guide rail 43 and the holding rod 3 is a grain stalk holding / conveying passage. With the above construction, while the grain conveying device 4 is being driven, tension is generated in the endless belt 6 (transport chain) by the driving force of the driving sprocket 52, and this tension causes the rear end of the pipe frame 44 to move. The floating roller 45 of the section is pulled forward, and as a result, a force acts to move the pipe frame 44 forward. This is the urging means 7
This is the effect of The forward movement of the pipe frame 44 is regulated to an appropriate position by the contact between the locking portion 59 provided on the support stay 49 and the rear link arm 50. Further, the endless belt 6 (transport chain) and the holding rod 3
When the transported culm is clogged between the end of the end and the end of the endless belt 6, the tension of the endless belt 6 (conveying chain) is reduced by stopping the driving of the endless conveying device 2, and the pipe frame 44 is moved forward. The power to try weakens. As a result, the pipe frame 44 is easily moved rearward only by resisting the tension of the tension spring 55, and the interval between the endless band 6 (transport chain) and the holding rod 3 is increased, so that the clogged grain is opened. The culm can be removed. Such an operation can be easily performed by grasping the guide rod 60 provided at the rear end of the pipe frame 44. Further, even if the amount of the transported culm temporarily increases, the pipe frame 44 automatically retreats, so that the occurrence of clogging can be prevented. The support structure of the endless transport device 2 is as follows.
The following configuration may be adopted. That is, the pipe frame 61
The cutting power transmission case 15 is inserted into the long hole 62 formed at the front end.
A pin 63 provided from the side is fitted, and a support stay 66 integral with the main transmission cylinder 19 is inserted into L-shaped bent long holes 65 formed in a mounting stay 64 at the rear end of the pipe frame 61. The pins 67 to be provided are fitted together. Even with this configuration, similar to the case of the parallel link described above,
The pipe frame 61 can be supported so that it can be moved and the movement amount can be regulated. In addition, the pipe frame 61
Is retracted, and the pins 67, 67 are
65, the endless band 6
The distance between the (conveying chain) and the holding rod 3 can be fixed while keeping the gap open, and maintenance can be performed more easily. To return to the transport state again, it is only necessary to hold the guide rod 68 provided at the rear end of the pipe frame 61 and pull it in the direction of the holding rod 3. The support structure of the endless transport device 2 may be configured as follows. That is, the pipe frame 6
9. Support the front end of the cutting transmission case 15 with the support
And a rear end of the pipe frame 69 and a support stay 71 on the main transmission cylinder 19 side are connected by a bent link arm 72. A guide rod 73 is attached to a part of the bent link arm 72. With this configuration, the bent link arm 72 is fixed in a stretched state over the fulcrum during the transportation of the grain stem, and the distance between the endless band 6 (transport chain) and the holding rod 3 is properly maintained. When the culm is clogged between the endless belt 6 (conveying chain) and the holding rod 3, the guide link 73 is operated to bend the bending link arm 72, whereby the bending link arm 72 is bent. By rotating the pipe frame 69, the endless belt 6 (transport chain) is retracted from the holding rod 3 to increase the interval. Thereby, maintenance can be easily performed. In the reaping operation, when the driving force of the prime mover 14 is input to the reaping transmission case 15 via the main transmission tube 19 by operating the reaping clutch from the operating section 13, the raising device 22, the grain stalk transport device 4 and the cutting blade device 1 are driven. The harvested corn culm transported by the cereal culm transport device 4 is supplied to the threshing device 11 and subjected to threshing, and the harvested grains are collected by the cereal storage device 12.
And stored temporarily.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of an operation of a main part in a first embodiment of the present invention. FIG. 2 is an explanatory plan view of a main part in the first embodiment of the present invention. FIG. 3 is a schematic side view of a main part in the first embodiment of the present invention. FIG. 4 is an explanatory diagram of an operation of a main part in a second embodiment of the present invention. FIG. 5 is an explanatory plan view of a main part in a second embodiment of the present invention. FIG. 6 is a schematic side view of a main part according to a second embodiment of the present invention. FIG. 7 is an operation explanatory view of a main part in another embodiment of the present invention. FIG. 8 is an explanatory plan view of a main part in another embodiment of the present invention. FIG. 9 is a schematic side view of a main part in another embodiment of the present invention. FIG. 10 is a side view of the combine according to the embodiment of the present invention. FIG. 11 is a plan view of a combine according to the embodiment of the present invention. [Description of Signs] 1 Cutting blade device 2 Endless transport device 3 Holding rod 4 Grain culm transport device 5 Cutting device 6 Endless belt 7 Biasing means

Claims (1)

(1) A grain culm transport device (4) is provided for transporting the grain culm cut by the cutting blade device (1) to the rear by being clamped by the endless transport device (2) and the clamping rod (3). In the reaper 5, the endless transport device 2 is configured to be movable toward and away from the holding rod 3, and the tension of the endless belt 6 accompanying the driving of the endless transport device 2 causes the endless transport device 2 to hold the holding rod 3. A culm conveying device in a reaper, further comprising an urging means 7 for urging in a direction approaching the stalk.