JPH07246018A - Raising apparatus of multi-row reaping combine harvester - Google Patents

Abstract

PURPOSE:To smoothly pass a culm without being obstructed with a transmission case in a multi-row reaping combine harvester having a plurality of raising apparatuses driven at their top parts from one side through a transmission shaft built in a transmission case. CONSTITUTION:A transmission shaft 61 of a raising apparatus 10 for an unreaped field side is divided in the middle of a raising path D and the divided transmission shaft 61 is driven in bent form with a bevel gear 62. An inverted V-shaped path H for passing the ear is formed under a transmission case 60 by this structure. The lengths of the right and left arms of the divided transmission shaft 61 are made to be different from each other to deviate the tip part P of the ear passing path H under the transmission case 60 toward the transfer direction of the rake-in transfer apparatus A1 placed at the back of the raising apparatus 10. Preferably, exclusively the ear passing path H of a raising path D closest to the unreaped field among the plural raising paths D is formed in the inverted V-shaped ear passing path H.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulling device used in a multi-row cutting combine having three or more cuts, and more particularly to a transmission structure of the pulling device.

[0002]

2. Description of the Related Art A combiner in which a plurality of pulling devices provided in front of a machine body are transmitted from one side through a transmission shaft provided in a transmission case at the upper portion thereof, or in Japanese Utility Model Publication No. 50-46625. Or actual Kaisho 51-3530
As shown in Japanese Patent Laid-Open Publication No. JP-A-2003-264, there is already known a combine in which one of the raising devices is chain-driven to the other of the raising devices.

[0003]

SUMMARY OF THE INVENTION A combine harvester in which the former is configured to be transmitted from one side by a transmission shaft of the former,
A transmission shaft and a transmission case covering the transmission shaft are provided at the back of the pulling device, and since they cross the upper part of the pulling path, especially when a long culm is caused, the tip of the grain culm becomes a transmission case. There is a drawback in that it causes stagnation when it comes into contact. In the worst case, the tip of the grain that touches the transmission case and tries to pass under it while curving will not be able to pass through because it is blocked by the tip of the grain culm that was caused subsequently, and it will be blocked at that part. Alternatively, there is a drawback in that particles are crushed by being forcibly conveyed by a scraping and conveying device provided at the rear part of the raising device. For this reason, in the case of transmission by a transmission shaft, it has been attempted to position the transmission shaft and the transmission case that covers the transmission shaft at a high position so as to widen the tip passage of the raising path. In order to prevent the height of the raising device from being raised more than necessary, it is necessary to separately hang the transmission shaft from the transmission shaft to the lower raising device, and to reduce the forward visibility from the driver's seat. However, there is a problem that the cost is high and the support in the upper part of the raising device becomes unstable.

In the latter, the combine that is transmitted from one of the pulling devices to the other of the pulling devices forms a mountain-shaped tip passage path below the chain case that covers the chain.
Although there is an advantage that no stagnation of the tip of the culms also cause long culms, width of just chain case to adopt chain transmission scheme is widened, with fundamentally deterioration in forward visibility is not resolved, There is no evidence that it was actually adopted due to poor maintainability such as noise generation by the chain or supply of lubricating oil. Moreover, even if this one can be used for transmission between two pulling devices, the transmission of the remaining pulling device can be performed by multiplying the same chain transmission by overlapping or by separately transmitting from another side by a dedicated transmission device. However, there is a problem in that the characteristic that the transmission is required and that the transmission is simply performed from one side to form an inexpensive transmission is lost, and the weight of the transmission is increased, and the support at the upper part of the pulling device is finally unstable.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention transmits a plurality of raising devices provided in front of a machine body from one side through a transmission shaft provided in a transmission case at an upper portion thereof. In the multi-row mowing combine as described above, the transmission shaft that drives the above-mentioned raising device is divided at the center of the raising path, and each of the divided transmission shafts is flexibly transmitted through the bevel gear, and the mountain is located below the transmission case. It is characterized in that a tip-shaped passage path having a shape is formed. In addition, the lengths of the transmission shafts to be divided are different from each other, and the top of the tip passage path formed below the transmission case is biased in the transport direction of the scraping transport device provided at the rear of the raising device. To do. Furthermore, among the plurality of raising paths, only the leading edge passage of the leading edge on the most uncut site side is formed in the mountain-shaped tip passage.

[0006]

When the combine harvester is put into the field and the harvesting operation is performed, the raising device causes the grain culms in the field to be triggered by the pulling claws, and the raised grain culms are trimmed by the cutting blade provided at the rear. At the same time, the harvested grain culm is conveyed toward the threshing device by the scraping conveying device. In this case, the plurality of pulling devices are transmitted from one side of the pulling device via the transmission shaft, and the transmission shaft of the portion corresponding to the pulling path is divided at the central portion thereof, and the respective divided transmission shafts are divided. Is refracted through a bevel gear. Therefore, the transmission case that covers the transmission shaft forms a mountain-shaped transmission case in the central portion of the pulling path, and forms a wide tip passage path below the transmission case. Therefore, even when cutting long culms, the ears of the culms caused by the ears quickly pass through the mountain-shaped wide tip passage without being disturbed by the transmission case, and the ears of the culms are delayed or fall forward. , And through the lower part of the transmission case without causing jamming due to the disturbance of the conveyance posture.

Further, the tips of the raised grain culms tend to pass biased toward the conveying direction side by the scraping conveying device provided at the rear part below the transmission case. However, the top of the mountain-shaped tip passage path formed below the transmission case is provided so as to be biased according to the transport direction of the scraping transport device. Therefore, most of the tips pass without difficulty under the highest peak of the transmission case. Therefore, when the top of the transmission case is provided on the bisector of the pulling path width, the tips are still stagnant.To avoid this, the top of the mountain-shaped transmission case is raised more than necessary and the forward visibility is increased. The problem that it worsens is suppressed, the transmission case is reasonably held to the minimum required height, and the mountain-shaped transmission case that biases the tip side is directed to the scraping conveyor device in the conveying direction. Therefore, the subsequent scraping and conveying can be performed well.

[0008] The grain culm introduced into the raising path on the side of the already cut ground was once fed laterally toward the feed chain side of the thresher by the scraping and conveying device, and then introduced into the raising path on the most uncut side. In a combine that merges with the grain culm and conveys the merged grain culm to the feed chain of the threshing machine, the grain culm caused by the raising device on the side of the slaughtered land is scratched. Since the conveying device immediately traverses the transmission case as it passes below it, even if it is a long culm, its tips easily pass under the transmission case while curving in the transverse direction along the transmission case, and the raising device Even if the transmission shaft of is set at a standard relatively low position, the tip is not clogged. However, although the grain culm introduced into the raising path on the most uncut site side is shaken slightly toward the merging portion by the scraping and conveying device, it merges with the grain culm conveyed from the above-mentioned transverse feed passage, and therefore the ears. Is more stagnant below the transmission case. Therefore, in the case of a long culm, the tip of the grain culm is blocked by the grain culm that is subsequently triggered and the grain culm that has been conveyed from the lateral feed passage, and in the end, it takes a curved posture to pass through the transmission case. Doing so causes clogging. Therefore, in the combine taking the above-mentioned transport form, among the plurality of raising routes, only the tip passage route of the raising route on the most uncut site side is formed into the mountain-shaped tip passage route, and In addition to preventing the occurrence of clogging, the tip passage path on the side of the already-cutted ground is not particularly formed in a mountain-shaped tip passage path so that the forward visibility from the driver's seat is not deteriorated.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to a five-row harvest combine shown in the drawings. 1 and 2, reference numeral 1 denotes a thresher mounted on the left side of a machine base 3 having a pair of left and right crawlers, and on the right side, in order from the front, a driver's seat 3a and a grain tank (not shown), etc. And a rear end of a pretreatment frame including a main frame 5 and a mowing frame 6 fixed to the front part of the support column 4 standingly provided on the front part of the machine stand 3 by means of a lateral support shaft 7. A vertically rotatably supported shaft is provided, and a lifting hydraulic cylinder 8 is interposed between the front portion of the machine base 3 and the main frame 5. Six cutting bodies 9 are attached to the front end of the cutting frame 6 in order to weed 5 rows of culms, and five raising devices 10 are obliquely provided from the rear of the cutting bodies 9 toward the upper rear. Further, the raising device 10 is equipped with a large number of raising claws 10b standing up on the raising route D side in the raising chain 10e installed inside the raising and lowering case, and the raising device 10 attaches its lower portion to the support rod 6a of the mowing frame 6 and its upper portion to the upper portion. It is supported by a transmission device described later. And the raising device 1
In the lower rear part of 0, corresponding to the pulling path D, three scraping paths A, which will be described in detail below, are formed, and the ends thereof are joined to the lateral conveying device B. The five star wheel-shaped scraping wheels 12 provided on the scraping path A are provided on each vertical axis 13
The scraping wheel 12 on the right end when viewed from the rear is provided with one scraping path A on the inside (the guide rod opposite is not shown).
Are separated and independent.

Further, the other four scraping wheels 12 are meshed with each other and are respectively provided in the two scraping paths A, and are located on the right side of the pair of scraping wheels 12 but are attached to the upper end of the vertical axis 13. V pulley 15 and a small-diameter V pulley 16 axially supported by a bracket 20 extending forward from the shaft holding cylinder.
A flexible take-up belt 25 with a take-up lug 25a is stretched over and a V-pulley 15 is attached to the upper end of the shaft 13 of the take-in wheel 12 meshing with the left side of the take-up belt 25, and the shaft holding cylinder is diagonally forward from And V-pulleys 16 and 22 are axially supported on the brackets 20 and 21 extending rearward, respectively, and a flexible take-in belt 25 with a flexible take-in lug 25a is stretched between these and the V-pulley 15, and the central longitudinal The intermediate sprocket chain 2 between the sprocket attached to the lower part of the shaft 13 and the roller 27 pivotally supported on the rear end side.
8 are stretched.

Further, a stock source take-in chain 31 is stretched over the lower part of the vertical axis 13 of the right take-up wheel 12 and the sprocket 30 at a portion traversing a lateral carrying path (main carrying device) B which will be described later. , The sprocket attached to the vertical axis 13 of the leftmost scraping wheel 12 and the sprocket of the transmission case 33 provided on the outer side of the end of the lateral conveying path are also driven by tensioning the stock scraping chain 35. As a result, the scraping wheel 12 at the left end is driven to rotate the scraping wheel 12 that sequentially meshes with its right side. Further, on the scraping wheel 12 of the intermediate scraping path A, a stalk scraping body 36 made of a finger drum, a star wheel or the like is mounted.

Further, on the upper part of the shaft 33a standing up from the left transmission case 33, there is a stem scraping chain 29 facing from the outside between the portions of the horizontal transport belts 38, 39 facing rearward at the transport end. A stalk that is stretched and scrapes the stem portion of the grain culm that is in the process of being pulled and transports it backward, and also receives the stem portion of the confluent grain culvert transported by the lateral transport device B and converts the transport direction to the rear. It constitutes a part scraping device. That is, the scraping path A on the left side is composed of the stock scraping chain 35 provided on the uncut area side, the scraping wheel 12, the scraping belt 25, the stem scraping chain 29, etc., which are sequentially arranged above the stock scraping chain 35. Is formed by the scraping conveying device A1 and the longitudinal conveying path at the rear side is obliquely directed toward the inside of the machine from the scraping rotation path portion by the scraping belt 25 at the front to the lower side of the transverse conveying device B. It is formed so as to merge and convey toward each other. Further, the right-side scraping path A is a scraping conveying device A2 including a stock-source scraping chain 31 provided on the side of the already cut land, a scraping wheel 12, a scraping belt 25, and the like which are sequentially arranged above the stock scraping chain 31. The vertical conveying path formed on the front side is directed toward the inner side of the machine body from the take-up rotation path portion formed by the front scraping belt 25 so that the transverse conveying device B can be merged and conveyed obliquely toward the upper side. Is forming.

The horizontal transfer device (main transfer device) B comprises a chain with undulating tines, and a horizontal transfer belt 38 in the middle stage.
39 and a drive sprocket 41 for a lower horizontal conveying belt 40, which is a chain with protrusions, is attached to a shaft 43 that rises from the gear case 42 in parallel with the shaft 13 and the like, and the return side intermediate portion of the middle horizontal conveying belt 39 is wound around the drive. The sprocket is attached to the upper part of the intermediate shaft 44 via a joint,
A shaft 47 having a drive sprocket wound around the left rear part of the above is attached to the upper end of the shaft 47 by engaging the sprocket provided at the lower end with the middle horizontal conveyance belt 39 to drive the upper horizontal conveyance belt 38 and transfer of the lower horizontal conveyance belt 40. The end extends rearward,
It is transmitted to the gear case 42 by a transmission shaft in the pipe 5a which is one of the constituent members of the main frame 5.

The inclined conveying device C is composed of a bristle-side conveying chain 50 having a tine and a guide rod arranged oppositely thereto, and a stock-source conveying chain 51 having a sandwiching rail arranged oppositely, and the front end thereof is a lower lateral side. Above and above the transport belt 40, the horizontal transport belt 38,
The rear end of 39 is supported by a support shaft 7 through a tilt shaft and a gear case so as to be tiltable up and down and transferred to the feed chain 1a of the thresher 1 so that the grain culms can be adjusted to an appropriate handling depth. I have to. Reference numeral 53 is a guide plate that is attached to the rear surface of the grain culm raising device 10 and forms the front surface of the lateral transport path between the scraping paths A.

Next, the raising device 10 already described with reference to FIGS. 3 and 4 will be described. Of the five pulling devices 10, four pulling devices 1 opposite to each other in front of the left and middle scraping paths A are provided.
0 is a pair of pulling claws 10b facing each other 2
The pulling path D for one row is formed, and the one pulling device 10 on the right side is formed so as to be the pulling path D for one row in which the pulling claw 10b is projected to one side, and the pulling path A on the right side is formed. The raising claw 10b is provided on the front surface so as to face in the same direction as the rotation and scraping direction side of the scraping and conveying device A2. These raising devices 10 are connected laterally by a transmission case 60 so that the upper part is fixed at the same point as the drive sprocket 10c with the lower part attached to the support rod 6a of the mowing frame 6 with the entire length corresponding to the length of the normal culm. In addition to the transmission case 4
2 is vertically supported by a transmission pipe 42a that is erected from 2 and a support frame 6b that is erected from the right cutting frame 6,
Further, it is firmly supported by an upper support frame 3b extending from the machine body frame 3.

A drive sprocket 10c in the raising device 10
Pulling chain 1 stretched between the sprocket and the guide sprocket 10d
0e means that the bevel gear 10g attached to the drive shaft 10f of the drive sprocket 10c is meshed with the bevel gears 62, 62 of the transmission shaft 61 supported in the transmission case 60, respectively. It is designed to rotate in the pulling direction. The transmission case 60 that laterally connects the pulling devices 10 has a plurality of support cases 6 to which the pulling devices 10 are attached and the drive bevel gears 10f are fitted.
The transmission shafts 61 each having bevel gears 62, 62 fixed to both shaft ends are pivotally supported by bearings 64 and connected in series by transmission pipes 65. Then, from the transmission shaft of the transmission pipe 42a described above provided at the left end of the transmission case 60, each transmission shaft 61 is connected to each bevel gear 10f, 62.
Drive through a series of.

In this embodiment, the pair of raising devices 10 facing the left-side scraping route A on the uncut side, which is the other side of the driver's seat 3a, includes a transmission shaft 6 at the center of the raising route D.
1 is divided into a V-shape, and the bevel gears 62 attached to the divided transmission shafts 61 are meshed with each other to cause refraction transmission to form a mountain-shaped tip passage H under the transmission case 60. By changing the left and right length of the transmission shaft 61, and connecting the refraction transmission case 66 and the refracted support case 63 with the long transmission pipe 65a and the short transmission pipe 65b, a mountain-shaped grain is formed above the pulling path D. An ear tip passage path H is formed, and its top P is deviated by a distance L from the center of the pulling path D toward the scraping conveyance direction of the scraping conveyance device A1 (direction of the merging point where the main conveyance path B merges). I am trying.

As a result, the total height of the raising device 10 is lowered to a level suitable for a grain culm of a normal length, the front view from the driver's seat 3a is improved, and it is caused by the raising claw 10b when mowing a long culm. The tip of the grain culm is not disturbed by the transmission case 60, and the mountain-shaped tip passing path H is provided.
It can pass through the part well and can be trimmed in an extended posture, and the grain culms that are scraped and transported by the scraping transport device A1 can be quickly transported vertically to the confluence of the horizontal transport device B at the rear, and can be transported horizontally. The large number of grain culms sent from the good side of the device B are well merged with each other without causing entanglement, and smoothly transferred from the end of the lateral transfer device B to the inclined transfer device C.
It can be threshed accurately by feeding to an appropriate depth.

At this time, the root side of the napped culm which is being caused by the raising claw 10b is being rotatably scraped while being swung laterally at the front ends of the scraping belt 25 and the stem scraping chain 29, or after cutting. By the vertical conveyance to the conveying direction side of the scraping conveying device A1, the tip side biased to one side in the raising route D is moved in the raising conveying direction of the scraping conveying device A1 in the raising route D. Since it is possible to quickly pass below the top portion P of the tip end passage H that is biased, the tip end is not obstructed by the transmission case 60 and the tip end is not delayed or shredded, and the smooth vertical conveyance is possible. Can be done.

Further, a plurality of pulling devices 1 as in the embodiment.
The transmission case 60 is divided into a plurality of transmission pipes 65, and the transmission shaft 61 having a bevel gear 62 in its hollow is manufactured in a divided shape so that the upper part of 0 is connected and supported laterally in series by the transmission case 60. Since the support cases 63 are connected to each other and driven from one side of the support cases 63, the total height of the pulling device 10a can be kept low without increasing the size of the transmission case 60 unlike the conventional one. In addition to supporting, it is possible to make common the transmission parts in manufacturing, which is advantageous in that it is simple and inexpensive.
In addition, in the embodiment, the mountain-shaped tip passage path H is changed to the pull-in path D corresponding to the scraping path A on the uncut area side (left side) where a particularly large amount of the lateral feed culms are merged with the scraping path A. Although configured, the tip end passage H may be formed in correspondence with another raising passage D as necessary.

In the embodiment, the five-row cutting combine was explained, but the present invention can be similarly applied to a combine having an even number of raising paths, such as four-row cutting or six-row cutting, and the transfer of grain culms. A route consisting of a raking and conveying device that opposes the raising route and a main conveying device that reaches the thresher is formed in a Y shape in plan view, and the grain culm caused by each raising route is formed in the central part of the machine body. Alternatively, they may be merged on the side and lifted and conveyed to the thresher. When the above Y-shaped transport path is taken, it is preferable that the right and left outer scraping transport devices are configured by utilizing both front end portions of the main transport device.

Therefore, as another embodiment, a raising device for a four-row cutting combine as shown in FIG. 5 will be described.
The pulling device 10 is formed by forming a pair of pulling devices 10 for two lines, and has a mountain-like tip end passage H in which the transmission shaft 61 is divided and internally installed above each pulling route D, respectively. A transmission case 60 to be formed is provided, and the top portions P of the transmission cases 60 are configured to be biased toward each other toward the inside of the machine body in each of the raising paths D. The pulling device 10 configured as described above is used for a combine having the above-mentioned Y-shaped transporting route, in which the grain culms introduced into each pulling route D are merged on the central side of the machine body. At the same time, as in the above-mentioned embodiment, the raising device of the multi-row mowing combine, which allows the grain culm to quickly pass under the transmission case 60 and can perform good cutting work without impairing the forward visibility. can do.

[0023]

As described above, according to the present invention, the transmission shaft for driving the pulling device is divided at the central portion of the pulling path, the transmission shaft is flexibly transmitted through the bevel gear, and the mountain shape is formed below the transmission case. Since it is designed to form a tip passage, the transmission case that is installed above the pulling path is made narrower without increasing the width to a wide width like the chain transmission method, yet it is rigid and compact. It is possible to maintain a good front view. Even in long culms, the tips of grain culms quickly pass through the mountain-shaped tip passage without being obstructed by the transmission case, preventing delay and tip collapse of grain culms, and prevent clogging. Mowing work can be performed.

When the lengths of the transmission shafts to be divided are different from each other and the top of the tip passage path formed below the transmission case is biased in the conveying direction of the scraping conveying device provided at the rear of the pulling device. , The tip of a transmission case biased to pass in the conveying direction of the scraping and conveying device can be swiftly passed below the highest top of the transmission case, which is biased accordingly, so that the tip delay or Accurately prevent culm and do not cause clogging. Further, by doing so, it is possible to provide a minimum required tip passage path, and it is not necessary to unnecessarily increase the height of the transmission case, and it is possible to further improve the forward visibility.

Furthermore, after the grain culm introduced into the raising path on the side of the already cut land is fed laterally, it is merged with the grain culm introduced into the raising path on the side of the uncut land, and is lifted and conveyed to the thresher. In the combine harvester, if only the tip passage of the raising path on the most uncut site side among the plurality of raising paths is formed into a mountain-shaped tip passage, clogging does not occur, and the The reaping work can be satisfactorily performed without obstructing the forward visibility.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a combine equipped with an embodiment of the present invention.

FIG. 2 is a plan view showing the transmission configuration of FIG.

FIG. 3 is a rear view of the raising device.

FIG. 4 is a sectional view showing a main part of a transmission case.

FIG. 5 is a rear view showing another embodiment of the raising device.

[Explanation of symbols]

 3 Machine stand (machine body) 3a Driver's seat 10 Raising device 25 Sucking belt 60 Transmission case 61 Transmission shaft 62 Bevel gear 63 Support case 66 Refraction case A Scraping path A1 Trapping transfer device B Side transfer device (main transfer device) D Raising Path DH Head passage Path P Top

Claims (3)

[Claims] 1. A multi-row mowing combine in which a plurality of raising devices provided in front of a machine body are transmitted from one side through a transmission shaft provided in a transmission case at an upper portion thereof. A multi-row cutting characterized in that the shaft is divided at the center of the raising path, and each of the divided transmission shafts is flexibly transmitted through a bevel gear to form a mountain-shaped tip passage path below the transmission case. Combine raising device. 2. The length of the transmission shaft to be divided is made different from each other,
The top of the tip passage path formed below the transmission case,
2. The pulling device for a multi-row mowing combine according to claim 1, wherein the pulling device is provided in a rear portion of the pulling device so as to be biased in a conveying direction. 3. The multi-row mowing combine according to claim 1, wherein only the tip passage path of the raising passages on the most uncut side of the plurality of raising passages is formed into a mountain-shaped tip passage passage. Invoking device.