JP4809721B2 - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reaping device of a combine, having a constitution enabling a left upper part conveying device as easily demountable. <P>SOLUTION: This reaping device of a combine conveying lifted up ear sides by a cereal culm-lifting up device 13 to the reaping part 3 arranged in front of a traveling machine body 1, joining left and right upper part conveying devices 28, 29 by a hanging frame 74 constituted as a reversed U-shape and constituting a vertical conveying device 30 for receiving from the left and right upper part-conveying devices 28, 29 and lower part-conveying devices 25, 27 to a feed chain 6 as one unit by centering around its rear end part as up and down rotatable is provided by constituting the left upper part-conveying device 28 as demountable as a unit. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a harvesting device for a combine, and more particularly, to a technique of a power transmission mechanism from an upper right conveyance device to an upper left conveyance device.

Conventionally, in a combine, in a pre-cutting treatment device provided in the front part of the combine, a culm raising device for raising an uncut cereal planted in a field, and a cutting reaped by a cutting blade device A cereal conveyance device for conveying the cereals backward, the cereal conveyance device sandwiching and conveying the root part of the cereal and an upper conveyance for conveying the tip part It is composed of devices. The upper transport device is composed of a main transport body having a long length and a sub transport body having a short length in a combination of three and four cuttings, and the main transport body and the sub transport body are viewed in a plan view. It is arranged in an approximately “C” shape. The sub-carrier is driven by power transmitted from the lower conveyance device, and the sub-carrier is fixed to the main carrier by a suspension frame or the like.
JP 2000-092954 A

  However, in the conventional structure, when attaching and detaching the upper left transport device from the suspension frame, it is necessary to attach and detach each component, which is troublesome. In addition, in the assembly process, since each part has to be pumped up, the process is complicated. Therefore, in view of such a problem, the present invention provides a combine harvester having a configuration in which the upper left transport device can be easily attached and detached.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In claim 1, in the reaping device (3) arranged in front of the traveling machine body (1), the left and right upper transport devices (28, 29) are connected by a suspension frame (74) configured in an inverted U shape, The left and right upper conveying devices (28, 29) and a vertical conveying device that is inherited from the lower conveying device to the feed chain are provided, and the combiner configured to be rotatable up and down around the rear end of the reaping device (3). The reaping device is configured such that the upper left conveying device (28) is detachable as a unit, and the upper left conveying device (28) includes an upper left conveying case including an upper plate (105) and a lower plate (106). 107), an upper left transport drive sprocket (101) housed in the upper left transport case (107), a driven sprocket (103), and a chain with tine (1) wound between the two sprockets. 2) etc., and the left upper conveyance drive sprocket (101) is fixed on a hollow drive shaft (111) having a fitting surface for preventing relative rotation inside, and the drive shaft (111) ) Is configured to be rotatably supported by the lower plate (106) via a bearing (112) .

According to a second aspect of the present invention, in the combine harvesting apparatus according to the first aspect, the upper left conveyance input shaft (76) protruding from the suspension frame (74) is fitted to the drive shaft (111) so as not to be relatively rotatable. An edge (76c) is formed at the tip of the suspension frame (74), and the edge (76c) and the upper plate (105) are fixed by a bolt (105a) .

  As effects of the present invention, the following effects can be obtained.

In claim 1, in the reaping device (3) arranged in front of the traveling machine body (1), the left and right upper transport devices (28, 29) are connected by a suspension frame (74) configured in an inverted U shape, The left and right upper conveying devices (28, 29) and a vertical conveying device that is inherited from the lower conveying device to the feed chain are provided, and the combiner configured to be rotatable up and down around the rear end of the reaping device (3). Since the upper left conveying device (28) is configured to be detachable as a unit , the upper left conveying device is used when a trouble such as crop clogging occurs in the upper left conveying device 28 during the harvesting operation in the field. It is possible to remove the device 28 and easily perform cleaning or the like. Also, parts can be easily replaced.

The upper left transport device (28) includes an upper left transport case (107) composed of an upper plate (105) and a lower plate (106), and an upper left transport housed in the upper left transport case (107). It consists of a drive sprocket (101), a driven sprocket (103), a chain with a tine (102) wound between the two sprockets, etc., and the upper left transport drive sprocket (101) cannot be relatively rotated inside. And is fixed on a hollow drive shaft (111) having a fitting surface for supporting the drive shaft (111), and the drive shaft (111) is rotatably supported on the lower plate (106) via a bearing (112). As a result of the unitization, unstable parts such as the inclination of the drive sprocket 101 are accommodated in the case 107, so that it is stable during assembly.

According to a second aspect of the present invention, in the combine harvesting apparatus according to the first aspect, the upper left conveyance input shaft (76) protruding from the suspension frame (74) is fitted to the drive shaft (111) so as not to be relatively rotatable. Since the edge (76c) is formed at the tip of the suspension frame (74) and the edge (76c) and the upper plate (105) are fixed by the bolt (105a) , the driving force from the suspension frame 74 Can be surely performed by spline fitting, and the bolt 105a can be removed to separate the unit from the suspension frame 74.

  Next, embodiments of the invention will be described.

  FIG. 1 is a side view showing the overall structure of a combine according to an embodiment of the present invention, FIG. 2 is a plan view of the combine, and FIG. 3 is a front view of the combine. 4 is a front perspective view of the reaping device, FIG. 5 is a side view of the reaping device, FIG. 6 is a skeleton diagram showing a power transmission mechanism of the reaping device, and FIG. 7 is a perspective view of the upper right transport device and the upper left transport device. FIG. 8 is a perspective partial sectional view of the upper right transport device, FIG. 9 is a perspective partial sectional view of a suspension frame, and FIG. 10 is a side partial sectional view showing a joint portion of a second drive pipe and a third drive pipe. 11 is a partial cross-sectional side view showing a joint between the third drive pipe and the upper left conveyance input pipe, FIG. 12 is a perspective view of the upper left conveyance device, and FIG. 13 is a partial partial cross sectional view of the upper left conveyance device. is there.

  First, the overall configuration of the combine according to the present invention will be described with reference to FIGS. 1 to 3. The triple-stripe combine in this embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 and 2. At the front part of the traveling machine body 1, a reaping device 3 that takes in the cereal while harvesting is mounted so as to be adjustable up and down by a single-acting hydraulic cylinder 4. A threshing device 5 with a feed chain 6 and a grain tank 7 for storing grains after threshing are mounted on the traveling machine body 1 side by side. In this embodiment, the threshing device 5 is disposed on the left side in the traveling direction of the traveling machine body 1, and the grain tank 7 is disposed on the right side in the traveling direction of the traveling machine body 1. The grain tank 7 is configured to be horizontally rotatable around a vertical axis (in the embodiment, the vertical auger tube 9 of the discharge auger 8, see FIGS. 1 and 2) provided at the rear portion of the traveling machine body 1. A driving unit 10 having a steering lever, a driving seat, and the like is provided between the reaping device 3 and the grain tank 7. An engine 11 as a power source is disposed below the operation unit 10. The harvested cereal grains harvested by the harvesting device 3 are transferred to the feed chain 6 and threshed by the threshing device 5.

  A handling cylinder 17 is housed in the handling room of the threshing device 5, and a swinging selection mechanism (not shown) for performing swing sorting by a chaff sheave or the like and a wind for performing wind sorting by a Kara fan are provided below the handling cylinder 17. A sorting mechanism (not shown) is arranged. The grains that have been sorted by both of these sorting mechanisms and collected in the first receptacle (not shown) are accumulated in the grain tank 7 via the first conveyor and the cereal conveyor (not shown). The first thing in the grain tank 7 is carried out of the machine through the discharge auger.

  The waste handed over from the rear end of the feed chain 6 to the waste chain 18 (see FIG. 2) is discharged to the rear of the traveling machine body 1 in a long state, or is passed to a waste cutter (not shown). After being cut to a short length as appropriate, it is discharged to the rear of the traveling machine body 1.

  Next, the reaping device will be described with reference to FIGS. 4 and 5.

  The reaping device 3 is arranged around a horizontally long reaping input pipe 35 (see FIGS. 1, 4, and 5) pivotally supported with respect to a reaping stand (not shown) positioned in front of the threshing device 5. It is configured to be rotatable up and down. A longitudinal transmission pipe 36 extending diagonally forward and downward is provided in the middle of the cutting input pipe 35. A midway portion of the vertical transmission pipe 36 and the front end portion of the traveling machine body 1 are connected via a single-acting hydraulic cylinder 4.

  A horizontally long horizontal transmission pipe 37 is provided at the tip (lower end) of the vertical transmission pipe 36. The horizontal transmission pipe 37 is provided with four cutting frames 38 protruding forward in parallel along the longitudinal direction of the horizontal transmission pipe 37 at appropriate intervals. A clipper-type cutting blade device 12 is provided below the cutting frame 38 group. A weeding body 15 projects from the tip of each cutting frame 38.

  Further, the horizontal transmission pipe 37 is provided with three middle and left and right pulling drive pipes 39a, 39b, and 39c extending obliquely upward in the forward direction according to the number of cutting lines. The middle, left and right raising drive pipes 39a, 39b, and 39c are arranged at appropriate intervals along the longitudinal direction of the lateral transmission pipe 37 (the lateral width direction of the traveling machine body 1). At each end of the middle, left, and right pulling drive pipes 39a, 39b, 39c, a culm pulling device 13 for attaching an uncut culm planted in the field is attached. In the present embodiment, the grain culling pulling device 13 for three strips is provided at the front portion of the reaping device 3. Between the grain raising apparatus 13 and the front end of the feed chain 6, a grain conveying device 14 is arranged.

  The grain raising device 13 includes a horizontal type grain raising case 22 having a raising tine 21 for raising an uncut grained rice cake taken in through the weed body 15. A star wheel 23 and a scraping belt 24 are disposed in the lower rear part. The star wheel 23 and the scraping belt 24 are for scraping the root portion of the uncut grain ridge caused by the pulling tine 21 corresponding to these sets backward. The root part of the uncut grain hoe that has been scraped by the star wheel 23 and the scraping belt 24 is cut by the clipper type cutting blade device 12.

  The grain feeder 14 conveys the lower right conveying chain 25 that conveys the right two chopped grains into the left diagonally rearward direction, and conveys the root portion of the lower right part of the right lower conveying chain 25 that conveys the root portion thereof to the lower right. The lower left transport chain 27 to be merged in the vicinity of the feed end position of the chain 25, the upper right transport tine 29a (upper right transport device 29) for transporting the tip of the harvested cereal portion of the right two strips diagonally to the left, and the left one In the vicinity of the feed end position of the upper left transport chain 28a (upper left transport device 28) that transports the tip part of the harvested cereal rice bran diagonally to the right and merges with the upper right transport tine 29a, and the lower right transport chain 25 It is comprised with the vertical conveyance chain 30 for inheriting and conveying to the feed chain 6 the root part of the harvested cereal rice cake for the 3 pieces which joined. The root portions of the three chopped cereal grains sent to the vertical conveyance chain 30 are subsequently inherited by the feed chain 6 and conveyed. Then, the tip part of the harvested cereal mash is threshed by the handling drum 17 in the handling chamber of the threshing device 5.

  Next, the drive transmission mechanism of the vertical conveyance chain 30 and the upper right conveyance tine 29a will be described with reference to FIGS.

  The motive power from the engine 11 toward the reaping device 3 is first supplied to the reaping input pipe 35 through the handling cylinder input shaft, the reaping speed change mechanism (not shown), the reaping input pulley 40, and the like. 41. The power transmitted to the cutting input shaft 41 is transmitted to the lateral transmission shaft 43 in the lateral transmission pipe 37 via the longitudinal transmission shaft 42 in the longitudinal transmission pipe 36, and then from the lateral transmission shaft 43 to the right and middle and Power is transmitted to the right, middle, and left pulling transmission shafts 44 a, 44 b, 44 c and the cutting blade driving shaft 45 that are housed in the left pulling drive pipes 39 a, 39 b, 39 c. The power transmitted to the right, middle, and left elevating transmission shafts 44a, 44b, and 44c is transmitted through the right, middle, and left elevating input shafts 46a, 46b, and 46c, and the elevating sprocket 47 connected thereto. Each wake 21 of the grain raising device 13 is driven. The power transmitted to the cutting blade drive shaft 45 drives the cutting blade device 12.

  From the left and right elevating transmission shafts 44c and 44a, the power also branches to the left and right lower conveyance drive shafts 48 disposed between the adjacent right and middle and left eliciting transmission shafts 44a, 44b and 44c. Is transmitted. The power transmitted to the left lower conveying drive shaft 48 is transmitted to the left lower conveying chain 27 of the cereal conveying device 14 and the left star wheel 23 in the cereal raising device 13 via a drive sprocket 49 connected thereto. And the scraping belt 24 is driven. The power transmitted to the lower right transport drive shaft 48 is transmitted to the right lower and center star in the lower right transport chain 25 of the grain feeder 14 and the grain raising device 13 via a drive sprocket 49 connected thereto. The wheel 23 and the scraping belt 24 are driven.

  Further, the power transmitted to the cutting input shaft 41 is transmitted to an input sprocket 34 penetrating through a longitudinal conveying drive shaft 50 provided in parallel with the cutting input shaft 41 via a chain 33. Power is transmitted from the vertical conveyance drive shaft 50 to the vertical conveyance input shaft 52 via a bevel gear 51. The vertical conveyance input shaft 52 is provided with a bevel gear 53 that meshes with the bevel gear 51 extending in the vertical direction through a middle portion, and a vertical conveyance for driving the vertical conveyance device 30 at the lower end. A sprocket 54 is fitted. Further, an upper right transport sprocket 56 for driving the upper right transport tine 29a is fitted to the upper end portion so as not to be relatively rotatable by spline fitting or the like. Accordingly, the upper right transport tine 29a and the vertical transport device 30 are driven in synchronization. The chain 33 and the input sprocket 34 shown in this embodiment can be replaced with a transmission mechanism using a belt and a pulley, and the other chains and sprockets shown in this embodiment can be similarly replaced. It is.

  Power is transmitted from the upper right transport sprocket 56 to the upper left transport device 28. That is, as shown in FIGS. 7 and 8, the rotation shaft 57 cannot be relatively rotated by spline fitting or the like in the upper shaft hole 56b of the boss portion 56a formed in a hollow shape in the center of the upper right transport sprocket 56. The drive sprocket 58 is fitted in the rotation shaft 57 so as not to be relatively rotatable by spline fitting or the like, and the rotation shaft 57 is fixed to the upper chain case 60 via a bearing or the like. Yes. A chain 61 is wound between the drive sprocket 58 and the input sprocket 59, and a first drive shaft 71 is penetrated through the center of the input sprocket 59 so as not to be relatively rotatable.

  The drive sprocket 58, the input sprocket 59 and the chain 61 are housed in the upper chain case 60. The upper chain case 60 rotatably supports the drive sprocket 58 via a bearing 62, and the rotation shaft 57 extends through the upper chain case 60. The upper chain case 60 is normally fixed to the lower right transport device 29 by a bolt 63. With such a configuration, when the upper right transport tine 29a of the upper right transport device 29 is replaced, the bolt 63 is removed and the drive sprocket 58 and the rotation shaft 57 are shifted upward so that the spline is fitted. The rotating shaft 57 can be removed from the boss portion 56a. That is, the upper chain case 60 can be removed from the upper right transport device 29, and the transmission pipes 71a, 72a, 73a and the upper left transport device 28, which will be described later, can be removed, and maintenance of the upper right transport device 29 can be performed. Specifically, since it is possible to secure a space above the upper right transport device 29, it is possible to easily maintain the upper right transport tine 29a, the sprocket, and the like by removing the cover.

  A first drive shaft 71 is penetrated through the center of the input sprocket 59 so as not to rotate relative thereto by spline fitting or the like. The first drive shaft 71 transmits drive to the upper left transport device 28 via a second drive shaft 72, a third drive shaft 73 and the like which will be described later. The first drive shaft 71, the second drive shaft 72, and the third drive shaft 73 are installed in a suspension frame 74 including a first drive pipe 71a, a second drive pipe 72a, a third drive pipe 73a, and the like, which will be described later. .

  As shown in FIGS. 7 to 11, the suspension frame 74 is disposed so as to bypass the upper side in a substantially inverted U shape when viewed from the front, and includes a first drive pipe 71a, a second drive pipe 72a, and a third drive pipe. The driving pipe 73a is integrally formed by joining the first joint 87 and the second joint 88 and welding them. Inside the suspension frame 74, the first drive shaft 71 accommodates transmission mechanisms such as a second drive shaft 72, a third drive shaft 73, and bevel gears 81, 82, 83, 84, 85, 86, which will be described later. An end portion on the base side of the first drive pipe 71 a constituting the suspension frame 74 is fixed to the upper chain case 60 of the upper right transport device 29.

  As shown in FIG. 8, the first drive shaft 71 protrudes upward, and is installed in a first drive pipe 71a similarly protruding upward. As shown in FIG. 9, the first drive shaft 71 has a first bevel gear 81 penetrating at its upper end, and the second bevel gear 81 is also penetrating from the first bevel gear 81 to one end of the second drive shaft 72. Engage with the bevel gear 82 to transmit power. The first bevel gear 81 and the second bevel gear 82 are accommodated in a first joint 87, and the first joint 87 rotatably supports one end of the first drive shaft 71 via a bearing 91 and also supports a bearing 93. One end of the second drive shaft 72 is rotatably supported. The first joint 87 is configured to have a substantially “h” shape, and the first drive pipe 71a and the second drive pipe 72a are connected so that the angle formed by both pipes is an obtuse angle. The second drive shaft 72 is laid from the right side to the left side in the traveling direction and straddles the upper right transport device 29 in plan view. The second drive shaft 72 is provided in a second drive pipe 72a that is horizontally mounted in the left-right direction.

  As shown in FIGS. 9 and 10, a third bevel gear 83 is fitted on the other end of the second drive shaft 72 so as not to rotate relative to the second drive shaft 72. Power is transmitted to the third drive shaft 73 by meshing with a fourth bevel gear 84 fixed on one end of 73. The third drive shaft 73 extends downward and is provided in the third drive pipe 73a. The third bevel gear 83 and the fourth bevel gear 84 are accommodated in a second joint 88. The second joint 88 rotatably supports the other end of the second drive shaft 72 via a bearing 94, and a bearing 95. One end of the third drive shaft 73 is rotatably supported via the. The second joint 88 is configured in a substantially V shape, and is configured so that the angle formed by both pipes becomes an acute angle as a joint between the second drive pipe 72a and the third drive pipe 73a. An insertion hole 75 for inserting the second drive shaft 72 and the like is formed. The insertion hole 75 is provided with an insertion hole lid 75a for closing the hole after insertion.

  As shown in FIG. 11, a fifth bevel gear 85 is fitted on the other end of the third drive shaft 73, and is housed in one end of the upper left transport input pipe 76a. One end of the upper left transport input pipe 76a is formed to be bent in a substantially “h” shape, and the end of the third drive shaft 73 is rotatably supported via the bearing 96 at the bent portion. One end of the upper left conveyance input shaft 76 is rotatably supported via the. A sixth bevel gear 86 is fitted on one end of the upper left conveyance input shaft 76, meshes with the fifth bevel gear 85, and transmits power from the third drive shaft 73 to the upper left conveyance input shaft 76. The upper left conveyance input shaft 76 is provided in the upper left conveyance input pipe 76a, and one end of the upper left conveyance input pipe 76a is provided with a flange (edge) 76b. A flange 73b is also provided at the end of the pipe 73a, and is fastened and fixed with a bolt or the like in a state where the flange 73b and the flange 76b are combined. The fifth bevel gear 85 and the sixth bevel gear 86 are accommodated on one side of the upper left conveyance input pipe 76a, and the upper left conveyance input via a bearing 98 on the other side of the upper left conveyance input pipe 76a. The other side of the shaft 76 is rotatably supported. The upper left conveyance input shaft 76 and the upper left conveyance input pipe 76 a are provided so as to be perpendicular to the upper left conveyance device 28.

  Next, a method of assembling the first drive shaft 71, the second drive shaft 72, and the third drive shaft 73 into the first drive pipe 71a, the second drive pipe 72a, and the third drive pipe 73a will be described.

  First, the first drive pipe 71a, the second drive pipe 72a, and the third drive pipe 73a are fixed by welding or the like via a first joint 87 and a second joint 88. The first drive shaft 71 is inserted from the opening side (insertion hole 77) of the first drive pipe 71a in a state where the first bevel gear 81 and the bearing 91 are fitted. That is, the bearing 91 is fitted on the boss portion of the first bevel gear 81, and the retaining ring 91 a is fitted and fixed to the end portion of the first drive shaft 71. In this state, it is inserted into the first drive pipe 71a and supported so as to be rotatable. A bearing 92 having a diameter larger than the diameter of the bearing 91 is fitted and fixed to the first drive pipe 71a at the other end from the opposite direction to the bearing 91. At this time, since the bearing 91 (first bevel gear 81) has a smaller diameter than the bearing 92, it can be inserted upward without contacting the insertion hole 77 during insertion. The first drive shaft 71 is installed inside the first drive pipe 71a by fixing the bearing 92 so as to be rotatable by a retaining ring 92a in a state where the bearing 92 is in contact with the side wall of the insertion hole 77.

  The second drive shaft 72 is inserted with the second bevel gear 82, the third bevel gear 83, and the bearings 93 and 94 fitted. That is, the bearing 93 is fitted on the boss portion of the second bevel gear 82 that meshes with the first bevel gear 81 and fixed by the retaining ring 93a. A bearing 94 is fixed to the end of the second drive shaft 72 by a retaining ring 94a. In this state, the first bevel gear 81 and the second bevel gear 82 are engaged with each other through the insertion hole 75 provided in the second joint. Then, the third bevel gear 83 is fitted on the end of the second drive shaft 72 and fixed with a retaining ring or the like. Note that the outer diameter of the bearing 93 is smaller than the outer diameter of the bearing 94. The insertion hole 75 is sized such that the bearings 93, 94, the second bevel gear 82, and the third bevel gear 83 can be inserted.

  The bearing 95 and the fourth bevel gear 84 are fitted to one end of the third drive shaft 73 and fixed by a retaining ring or the like. In this state, it inserts from the insertion hole 78 located under the 3rd drive pipe 73a. At this time, the diameter of the bearing 95 is smaller than that of the insertion hole 78. A fifth bevel gear 85 having a bearing 96 fitted on the boss portion is fitted on the other end of the third drive shaft 73 and fixed by a retaining ring. Then, one end of the upper left conveyance input pipe 76a is fitted, and the flange portion 73b provided on the third drive pipe 73a and the flange portion 76b provided on the upper left conveyance input pipe 76a are fastened with a bolt or the like. Then, the bearing 97 is fixed on the boss of the sixth bevel gear 86 and is inserted from below the upper left conveyance input pipe 76a to mesh the sixth bevel gear 86 and the fifth bevel gear 85. A bearing 98 is fitted on the middle of the upper left transport input pipe 76a and is fixed to the end of the upper left transport input pipe 76a by a retaining ring or the like.

  On the other hand, the upper left transport device 28 is fastened to the upper left transport input pipe 76a with a bolt or the like. As shown in FIGS. 11, 12, and 13, the upper left conveyance device 28 has a left upper conveyance drive sprocket 101 fitted to the upper left conveyance input shaft 76, and a chain 102 with respect to the upper left conveyance drive sprocket 101. A driven sprocket 103 that pivots through the chain, a chain 102 wound between the upper left conveyance drive sprocket 101 and the driven sprocket 103, and swings in a cantilevered state on the chain 102 with a certain interval. The upper left conveyance tine 28a and the like are supported, and the outside is covered and protected by a left upper conveyance case 107 including an upper plate 105 and a lower plate 106. These parts have a unit configuration formed integrally by assembling in advance.

  That is, a flange (edge) 76c is provided at an end of the upper left transport input pipe 76a on the upper left transport device 28 side, and a plurality of bolt holes 76d are formed in the flange 76b. Yes. On the other hand, a plurality of bolts 105a are fixed to the upper plate 105 of the upper left transport case 107 by welding or the like corresponding to the bolt holes 76d. The upper left transport input pipe 76a and the upper left transport device 28 are fixed by inserting the bolt 105a into the bolt hole 76d and fastening with a nut or the like. The upper transport drive sprocket 101 is fitted to a boss-shaped drive shaft 111 at the center, and the end of the upper left transport input shaft 76 is relatively rotated by spline fitting or the like on the axial center of the drive shaft 111. It is inserted impossible. The lower end of the drive shaft 111 is fitted into a bearing 112 and is rotatably supported. The bearing 112 is fixed to the lower plate 106. That is, the drive sprocket 101 is supported by the bearing 112 provided on the bottom plate 106 of the upper left transport case 107. Thus, by removing the nut, the upper left transport device 28 can be pulled down from the upper left transport input pipe 76a and the upper left transport input shaft 76 to be removed. The fitting means between the drive shaft 111 and the upper left transport input shaft 76 is not limited to spline fitting, and for example, fitting means such as a square hole and a square shaft, a key groove and a key can be used. is there.

As described above, the head side caused by the grain raising device 13 is conveyed to the reaping device 3 arranged in front of the traveling machine 1, and the left and right upper conveyance devices 28 are formed by the suspension frame 74 configured in an inverted U shape. -29 is connected, and the left and right upper transport devices 28, 29 and the vertical transport device 30 inherited from the lower transport devices 25, 27 to the feed chain 6 can be integrally rotated up and down around the rear end. In this combine harvester, the upper left transport device 28 is configured to be detachable as a unit. By configuring in this way, when a trouble such as crop clogging occurs in the upper left transport device 28 during the cutting operation in the field, it is possible to easily remove the left upper transport device 28 and perform cleaning or the like. is there. Also, parts can be easily replaced.

  The upper left transport device 28 includes a case 107 composed of an upper plate 105 and a lower plate 106, a drive sprocket 101 accommodated in the case 107, a driven sprocket 103, and a winding between the sprockets 101 and 103. The drive sprocket 101 is fixed on a hollow drive shaft 111 having a fitting surface for preventing relative rotation in the interior thereof, and the drive shaft 111 is formed on the lower side. The plate 106 is rotatably supported through a bearing. By configuring in this way, the unstable parts such as the inclination of the drive sprocket 101 are integrated in the case 107 by unitization, so that it is stable during assembly.

  A transmission shaft 76 protruding from the suspension frame 74 is fitted to the drive shaft 111 so as not to be relatively rotatable, and an edge portion 76c is formed at the tip of the suspension frame 74. The edge portion 76c and the upper case 107 are formed. Were fixed with bolts 105a. With this configuration, transmission of the driving force from the suspension frame 74 can be reliably performed by spline fitting, and the unit 105 can be separated from the suspension frame 74 by removing the bolt 105a.

As described above, to the cutting device 3 arranged in front of the traveling machine body 1, the vertical conveying device 30 inherited from the lower conveying devices 25 and 27 to the feed chain 6 and the tip side caused by the grain raising device 13 are conveyed. A harvesting device for a combine in which the left and right upper transport devices 28 and 29 are configured to be integrally rotatable up and down around the rear end portion thereof, and are a right upper transport device 29 (pilot seat side) and a left upper transport device. 28 (feed chain side) is connected by a suspension frame 74 configured in an inverted U shape with a pipe, and a transmission mechanism for transmitting power from the upper right transport device 29 to the upper left transport device 28 is provided in the pipe frame. It was. By configuring in this way, the upper left conveying device 28 can rotate integrally with the vertical conveying device 30 and the upper right conveying device 29, so that it is possible to cope with changes in crop culm length. Further, the upper right transport device 29 and the upper left transport device 28 can be integrally rotated.

  As described above, the suspension frame 74 includes the upward first pipe 71a protruding from the upper end of the pipe rising from the upper right transport device 29, and the substantially horizontal second pipe connected to the upper end of the first pipe 71a. 72a, a downwardly facing third pipe 73a connected to the tip of the second pipe 72a, and joints 87 and 88 connecting these pipes, are integrally formed, and drive shafts 71 and 72 are formed inside each pipe. A driving means for driving the upper left conveyance device 28 through 73 is provided. With this configuration, the drive means is protected by incorporating the drive means inside the suspension frame 74. In addition, the bevel gears 81, 82, 83, 84, 85, and 86 are arranged inside the joint to transmit power to the transmission shaft, thereby reducing costs and improving durability compared to using a flexible transmission shaft. .

  Further, the three pipes 71a, 72a, 73a are connected by two joints 87, 88 to form a suspension frame 74, and the first joint 87 is formed in a substantially “h” shape connecting the pipes at an obtuse angle. The second joint 88 is formed in a substantially V shape that connects the pipes at an acute angle, and an opening for inserting the transmission shaft 72 into the pipe 72a is formed at the bent portion of the second joint 88. With this configuration, it becomes easy to insert the drive shaft, the bevel gear, and the bearing into the U pipe. That is, with the drive shaft, the bevel gear, and the bearing assembled (structure), the gear-shaped first joint can be inserted through the openings on both sides to mesh the gears. One shaft mechanism can be inserted into the second joint, and the other can be inserted through the other opening to engage the bevel gear.

  The base side end of the suspension frame 74 is detachably fixed to the upper chain case 60 of the upper right transport device 29. With this configuration, the upper right transport device 29 and the upper left transport device 28 can be integrally rotated. In addition, the suspension frame and the like can be removed integrally to facilitate maintenance and the like.

The side view which showed the whole structure of the combine which concerns on one Example of this invention. The top view of a combine. The front view of a combine. The front perspective view of a reaping device. The side view of a reaping device. The skeleton figure showing the power transmission mechanism of the reaping device. The perspective view of a right upper part conveying apparatus and a left upper conveying apparatus. The perspective partial cross section figure of an upper right part conveying apparatus. The perspective partial sectional view of a hanging frame. The side surface partial sectional view showing the junction part of the 2nd drive pipe and the 3rd drive pipe. The side surface partial sectional view showing the junction part of the 3rd drive pipe and the upper left conveyance input pipe. The perspective view of an upper left conveyance apparatus. Side surface partial sectional drawing of an upper left conveyance apparatus.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Harvesting apparatus 13 Grain raising apparatus 28 Upper left conveyance apparatus 29 Upper right conveyance apparatus 71 1st drive shaft 72 2nd drive shaft 73 3rd drive shaft 74 Hanging frame 75 Insertion hole 76 Upper left conveyance input shaft 101 Upper left transport drive sprocket 107 Upper left transport case

Claims (2)

In the reaping device (3) arranged in front of the traveling machine body (1), the left and right upper transport devices (28, 29) are connected by a suspension frame (74) configured in an inverted U shape, and the left and right upper transport devices. (28, 29) and a vertical conveying device inherited from the lower conveying device to the feed chain, and a combine harvester configured to be vertically rotatable around the rear end of the harvester (3), The upper left transport device (28) is configured to be detachable as a unit. The upper left transport device (28) includes an upper left transport case (107) including an upper plate (105) and a lower plate (106), and the upper left transport case (107). The upper left transport drive sprocket (101) housed in the part transport case (107), the driven sprocket (103), the tine chain (102) wound between the sprockets, etc. The upper left conveyance drive sprocket (101) is fixed on a hollow drive shaft (111) having a fitting surface for preventing relative rotation inside, and the drive shaft (111) is fixed to the lower plate (106). The combine harvester is characterized in that it is rotatably supported via a bearing (112) . The combine mowing apparatus according to claim 1, wherein the upper left transport input shaft (76) protruding from the suspension frame (74) is fitted to the drive shaft (111) so as not to be relatively rotatable, and the suspension frame (74). ), The edge portion (76c) is formed at the front end, and the edge portion (76c) and the upper plate (105) are fixed by a bolt (105a) .

Images