combine

Abstract

To provide a combine that can easily remove a grain culm stuck in the rear side of a raise-up device.SOLUTION: A raise-up frame (40) is formed of an upper and lower transmission cylinder (41) extending downward from a first transmission cylinder (15) and a right and left transmission cylinder (42) extending in a right and left direction from a lower part of the upper and lower transmission cylinder (41). A convex portion (54A) is formed in a front part of a first rotating shaft (46) installed inside the right and left transmission cylinder (42). A front end of the convex portion (54A) extends forward of front faces of a right connecting portion (42R) and a left connecting portion (42L) of the right and left transmission cylinder (42). A concave portion (55A) engaging with the convex portion (54A) is formed in the rear side of a second rotating shaft (51) supporting a drive sprocket (50) around which a raise-up chain (56) of raise-up devices (17, 70) is wound. A rear end of the concave portion (55A) is positioned forward of a rear wall of the raise-up devices (17, 70).SELECTED DRAWING: Figure 14

Description

[Technical field]

[0001] The present invention relates to a combine harvester having a plurality of lifting devices in a harvesting device. [Background technology]

[0002] A known technology involves connecting the upper parts of a pair of lifting devices, one for lifting culms and the other for lifting the culms, located in the middle of the transmission tube, with a frame extending vertically, and when the culms become stuck in the transport device located behind the lifting devices, the frame is rotated around the axis of the transmission tube to lift the lower part of the lifting device upward, securing a working space in front of the transport device and removing the culms stuck in the transport device (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-37441 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technology of Patent Document 1 had a problem in that it was necessary to rotate a frame connecting the transmission cylinder and the lifting device about the axis of the transmission cylinder to lift up the lower part of the lifting device, which required a large workload.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a combine harvester capable of easily removing stalks stuck behind the lifting device.

[0006] The present invention which has solved the above problems is as follows. That is, the invention described in claim 1 is a combine harvester in which a harvesting device (3) is provided in front of a machine frame (1) on which an engine is mounted, a threshing device (4) is provided on the rear left side of the harvesting device (3), and a control unit (5) is provided on the rear right side of the harvesting device (3). A harvesting frame (10) of the harvesting device (3) is provided with a grass dividing body (16) for dividing culms, a lifting device (17, 70) for raising the divided culms, a cutting blade device (18) for cutting the base of the raised culms, and a conveying device (19) for clamping the cut culms and conveying them to the threshing device (4). A first transmission tube (15) extending in the left-right direction for transmitting the output rotation of an engine arranged on the upper part of the harvesting frame (10) is provided. At least one or more lifting frames (40) are provided in the left-right intermediate portion of the first transmission tube (15). The lifting frames (40) are connected to upper and lower transmission tubes (41) extending downward from the first transmission tube (15). The combine harvester is characterized in that it is formed of left and right transmission cylinders (42) extending in the left-right direction from the lower parts of the upper and lower transmission cylinders (41), a convex portion (54A) is formed in the front part of a first rotating shaft (46) mounted inside the left and right transmission cylinders (42), the front end of the convex portion (54A) extends forward of the front faces of the left connecting portion (42L) and the right connecting portion (42R) of the left and right transmission cylinders (42), a recess (55A) that engages with the convex portion (54A) is formed in the rear part of a second rotating shaft (51) that supports a drive sprocket (50) around which a raising chain (56) of the raising device (17, 70) is wound, and the rear end of the recess (55A) is positioned forward of the rear wall of the raising device (17, 70).

[0007] The invention described in claim 2 is the combine described in claim 1, wherein the convex portion (54A) is formed in a polygonal shape and a first chamfered portion (54B) is formed on the outer periphery of the front end of the convex portion (54A), and the concave portion (55A) is formed in a polygonal shape and a second chamfered portion (55B) is formed on the inner periphery of the rear end of the concave portion (55A).

[0008] The invention described in claim 3 is a combine harvester described in claim 1 or 2, in which a snap pin (57) that regulates the rotation of the raising chain (56) is inserted into a portion between the drive sprocket (50) and the tension sprocket (81) of the raising chain (56) of the raising device (17, 70) removed from the harvesting frame (10).

[0009] The invention according to claim 4 is provided with support members (49) on both sides of the left and right transmission cylinders (42), and a spike tip guide (58B) for guiding the spike tips of the cereal straws lifted by the lifting devices (17, 70) is provided at the lower end of the support members (49). A base of a cereal straw sensor (58A) for detecting the cereal straws lifted above the spike tip guide (58B) in the support members (49) is provided so as to be swingable. In a rear view, when the lifted cereal straws are not detected, the long axis of the cereal straw sensor (58A) is orthogonal to the tip of the spike tip guide (58B), and when the lifted cereal straws are detected, the long axis of the cereal straw sensor (58A) is parallel to the tip of the spike tip guide (58B). It is a combine according to claim 1 or 2 having such a configuration.

[0010] The invention according to claim 5 is provided with a left support device (100L) for supporting the left part of the first transmission cylinder (15) and a right support device (100R) for supporting the right part of the first transmission cylinder (15) at the front part of the machine body frame (1). A release plate (117) for engaging and disengaging an engagement with a pin (116) extending in the left-right direction of the upper clamping part (112B) and the lower clamping part (112A) is provided on the left side of an operation lever (114) for opening and closing the upper clamping part (112B) provided above the lower clamping part (112A) of the right support device (100R). It is a combine according to claim 1 or 2 having a configuration in which the engagement between the upper clamping part (112B) and the pin (116) is released when the grip parts (117A) of the operation lever (114) and the release plate (117) are gripped.

[0011] The invention according to claim 6 is provided with a cabin (9) covering the control part (5), and a gearbox (72) for increasing and decreasing the speed of the output rotation transmitted to the first transmission cylinder (15). An operation lever (73) for operating a shifter connecting part (72A) for switching the meshing of the gears of the gearbox (72) is arranged on the left side of the cabin (9), and the left part of a first rod (73A) extending in the left-right direction of the operation lever (73) is connected to the shifter connecting part (72A), and the No. 1This is a combine harvester as described in claim 1, in which a right portion of a rod (73A) is rotatably fixed to a support member (74) provided in the middle portion of the first transmission cylinder (15), and a second rod (73B) extending upward from the right portion of the first rod (73A) of the operating lever (73) is provided to the left of the support member (74) when viewed from the front.

[0012] The invention described in claim 7 is the combine described in claim 6, wherein the second rod (73B) extends upward from a right portion of the first rod (73A) and then extends toward a cabin (9).

[0013] The invention described in claim 8 further comprises a cover (19A) for covering an upper side of the conveying device (19), This is a combine harvester as described in claim 6 or 7, in which an oil controller (76) for oiling the harvesting device (3) and the threshing device (4) is provided at a position overlapping with the cabin (9) in a side view, and the rear of the cover (19A) and the oil controller (76) are connected by a connecting member (79).

[0014] The invention described in claim 9 is a combine harvester described in claim 6, in which front and rear frames (22) extending from a second transmission tube (13) extending in the left-right direction and located at the bottom of the harvesting frame (10) toward the grass body (16) are arranged at a predetermined interval in the left-right direction, and at least one stay (43) extending upward from the middle part of the frame (23) connecting the middle parts of the front and rear frames (22) is provided in the middle part of the frame (23) extending in the left-right direction and connecting the middle parts of the front and rear frames (22), and left and right frames (44) extending in the left-right direction from the upper part of the stay (43) are provided, and the axis extending in the up-down direction of the upper and lower transmission tubes (41) is offset from the left-right center of a pair of left and right lifting devices (17, 70) that are removably fixed to the left and right frames (44) and the left and right transmission tubes (42).

[0015] The invention described in claim 10 is a combine harvester as described in claim 9, in which an abutment member (41A) is provided at the upper part of the upper and lower transmission barrels (41) for abutting the upper parts of the rear walls of the pair of left and right lifting devices (17, 70), a left connecting portion (42L) is provided at the left part of the left and right transmission barrels (42) for connecting the rear walls of the left lifting device (17, 70), and a right connecting portion (42R) is provided at the right part of the left and right transmission barrels (42), and in side view, the front surface of the abutment member (41A), the front surface of the left connecting portion (42L), and the front surface of the right connecting portion (42R) are formed parallel to each other.

[0016] The invention described in claim 11 is a combine described in claim 10, in which, when viewed from the side, the front surface of the abutment member (41A), the front surface of the left connecting portion (42L), and the front surface of the right connecting portion (42R) are formed to have a predetermined intersection angle with the axis of the upper and lower transmission cylinders (41).

[0017] The invention described in claim 12 is a combine harvester described in claim 9, in which a conversion part (18A) for converting the output rotation of a rotating shaft installed in the second transmission cylinder (13) into swinging movement is provided on the rear side of the cutting blade device (18), and a front-rear rod (91) is provided extending from the rear of the front-rear frame (22) located at the rightmost side toward the right wall of the second transmission cylinder (13).

[0018] The invention described in claim 13 is the combine described in claim 12, further comprising a rectangular protective plate (92) provided in the middle of the front and rear rods (91) in a side view to cover the conversion portion (18A).

[0019] The invention described in claim 14 is a combine described in claim 12, in which a protective rod (94) is provided in the middle of the front and rear rods (91) in a side view, which extends upward, then extends upward toward the rear, passes through the right part of the conversion portion (18A), and reaches the upper side of the second transmission cylinder (13).

[0020] The invention according to claim 15 is a combine according to claim 11, wherein the right part on the opposite side of the starting device (17B) located second from the left side of the starting device (17) is arranged to face the left part on the opposite side of the starting device (17C) located third from the left side of the starting device (17). The upper part of the starting device (17B) is detachably fixed to the left part of the left - right transmission cylinder (42) by a left engaging part (47L), and the lower part is detachably fixed to the left part of the left - right frame (44) by a left clamping part (48L). The upper part of the starting device (17C) is detachably fixed to the right part of the left - right transmission cylinder (42) by a right engaging part (47R), and the lower part is detachably fixed to the right part of the left - right frame (44) by a right clamping part (48R).

[0021] In the invention according to claim 16, the right part on the side opposite to the triggering side of the triggering device (70B) located second from the left side of the triggering device (70) is arranged to face the left part on the side opposite to the triggering side of the triggering device (70C) located third from the left side of the triggering device (70), the right part on the side opposite to the triggering side of the triggering device (70D) located fourth from the left side of the triggering device (70) is arranged to face the left part on the side opposite to the triggering side of the triggering device (70E) located fifth from the left side of the triggering device (70). The upper part of the triggering device (70B) is detachably fixed to the left part of the left and right transmission cylinder (42) extending from the lower part of the upper and lower transmission cylinder (41) on the left side by the left engaging part (47L), and the lower part is detachably fixed to the left part of the left and right frame (44) extending from the upper part of the stay (43) on the left side by the left clamping part (48L). The upper part of the triggering device (70C) is detachably fixed to the right part of the left and right transmission cylinder (42) extending from the lower part of the upper and lower transmission cylinder (41) on the left side by the right engaging part (47R), and the lower part is detachably fixed to the right part of the left and right frame (44) extending from the upper part of the stay (43) on the left side by the right clamping part (48R). The upper part of the triggering device (70D) is detachably fixed to the left part of the left and right transmission cylinder (42) extending from the lower part of the upper and lower transmission cylinder (41) on the right side by the left engaging part (47L), and the lower part is detachably fixed to the left part of the left and right frame (44) extending from the upper part of the stay (43) on the right side by the left clamping part (48L). The upper part of the triggering device (70E) is detachably fixed to the right part of the left and right transmission cylinder (42) extending from the lower part of the upper and lower transmission cylinder (41) on the right side by the right engaging part (47R), and the lower part is detachably fixed to the right part of the left and right frame (44) extending from the upper part of the stay (43) on the right side by the right clamping part (48R). It is the combine according to claim 11.

[0022] In the invention according to claim 17, the left engaging part (47L) is formed by an engaging part (60) provided on the left and right transmission cylinder (42) and a first engaged part (61) erected on the rear surface of the triggering devices (17B, 70B, 70D), the right engaging part (47R) is formed by an engaging part (60) provided on the left and right transmission cylinder (42) and a first engaged part (61) erected on the rear surface of the triggering devices (17C, 70C, 70E), and the combine according to claim 15 or 16, in which the first engaged part (61) is formed with irregularities.

[0023] The invention according to claim 18 is such that the left clamping component (48L) is formed by an upper clamping portion (65) and a lower clamping portion (66) provided below the triggering device (17B, 70B, 70D), the right clamping component (48R) is formed by an upper clamping portion (65) and a lower clamping portion (66) provided below the triggering device (17C, 70C, 70E), a pin (65B) extending in the left - right direction is provided on the upper clamping portion (65), the front portion of the arc - shaped upper clamping main body portion (65C) of the upper clamping portion (65) is fixed to the pin (65B), the front portion of the arc - shaped lower clamping main body portion (66A) of the lower clamping portion (66) is rotatably fixed to the pin (65B), a second engaged portion (66B) is provided at the rear portion of the lower clamping main body portion (66A), and the rear portion of the second engaged portion (66B) is curved rearward and downward. It is the combine according to claim 15 or 16.

[0024] The invention according to claim 19 is the combine according to claim 18, wherein elastic members are laminated on the inner peripheral surfaces of the upper clamping main body portion (65C) and the lower clamping main body portion (66A).

[0025] The invention according to claim 20 is the combine according to claim 11, wherein the left part of the left - right transmission cylinder (42) and the left - right frame (44) is connected by a left - right - extending upper and lower frame (45L), and the right part of the left - right transmission cylinder (42) and the left - right frame (44) is connected by a right - left - extending upper and lower frame (45R).

[0026] The invention according to claim 21 is the combine according to claim 20, wherein in a side view, the left - right - extending upper and lower frame (45L) and the right - left - extending upper and lower frame (45R) are arranged parallel to the rear surface of the triggering device (17, 70).

Advantages of the Invention

[0027] According to the invention described in claim 1, a reaping frame (10) of the reaping device (3) is provided with a culm dividing body (16) for dividing the culms, a lifting device (17, 70) for lifting the divided culms, a cutting blade device (18) for cutting the base of the lifted culms, and a conveying device (19) for clamping the cut culms and conveying them to the threshing device (4). At least one or more lifting frames (40) are provided in the left-right middle of the first transmission cylinder (15), and the lifting frame (40) is formed of an upper and lower transmission cylinder (41) extending downward from the first transmission cylinder (15) and a left-right transmission cylinder (42) extending left-right from the lower portion of the upper and lower transmission cylinder (41). A protrusion (54A) is formed in the front of a first rotating shaft (46) installed inside the left-right transmission cylinder (42). a front end of the protrusion (54A) extends forward from the front faces of the left connecting portion (42L) and the right connecting portion (42R) of the left and right transmission cylinders (42); a recess (55A) engaging with the protrusion (54A) is formed in the rear of the second rotating shaft (51) supporting the driving sprocket (50) around which the raising chain (56) of the raising device (17, 70) is wound; and the rear end of the recess (55A) is positioned forward from the rear wall of the raising device (17, 70). The front part of the first rotating shaft (46) of the left and right transmission tubes (42) of the harvesting frame (10) can be easily connected and disconnected to the rear part of the second rotating shaft (51) supporting the drive sprocket (50) of the lifting device (17, 70). When the conveying device (19) etc. becomes clogged with straw, the lifting device (17, 70) can be quickly removed from the harvesting frame (10) to quickly form a large working space in front of the conveying device (19) etc.

[0028] According to the invention recited in claim 2, in addition to the effects of the invention recited in claim 1, the convex portion (54A) is formed in a polygonal shape and a first chamfered portion (54B) is formed on the outer periphery of the front end of the convex portion (54A), and the concave portion (55A) is formed in a polygonal shape and a second chamfered portion (55B) is formed on the inner periphery of the rear end of the concave portion (55A). As a result, the first rotating shaft (46) and the second rotating shaft (51) can be connected more quickly and the connection can be made more reliable.

[0029] According to the invention described in claim 3, in addition to the effects of the invention described in claim 1 or 2, a snap pin (57) that restricts the rotation of the raising chain (56) is inserted into the portion between the drive sprocket (50) and the tension sprocket (81) of the raising chain (56) of the raising device (17, 70) that has been removed from the mowing frame (10). This restricts the rotation of the raising chain (56) of the raising device (17, 70) that has been removed from the mowing frame (10), and the raising device (17, 70) can be easily attached to the mowing frame (10) again.

[0030] According to the invention described in claim 4, in addition to the effects of the invention described in claim 1 or 2, support members (49) are provided on both sides of the left and right transmission tubes (42), a tip guide (58B) is provided at the lower end of the support member (49) to guide the tip of the culm raised by the raising device (17, 70), and the base of the culm sensor (58A) that detects the raised culm is provided above the tip guide (58B) on the support member (49) so as to be able to swing freely. When viewed from the rear, if the raised culm is not detected, the long axis of the culm sensor (58A) and the tip of the tip guide (58B) are perpendicular to each other, and if the raised culm is detected, the long axis of the culm sensor (58A) and the tip of the tip guide (58B) are parallel to each other. This prevents the tip of the culm from becoming entangled in the culm sensor (58A) and makes it easy to raise the culm.

[0031] According to the invention of claim 5, in addition to the effects of the invention of claim 1 or 2, a left support device (100L) for supporting a left part of the first transmission cylinder (15) and a right support device (100R) for supporting a right part of the first transmission cylinder (15) are provided at the front part of the machine body frame (1), and a pin (114) extending in the left-right direction between the upper clamping part (112B) and the lower clamping part (112A) is provided on the left side of an operating lever (114) for opening and closing an upper clamping part (112B) provided above the lower clamping part (112A) of the right support device (100R). A release plate (117) is provided to engage and disengage the upper clamping portion (112B) and the pin (116). When the operating lever (114) and the grip portion (117A) of the release plate (117) are gripped, the engagement between the upper clamping portion (112B) and the pin (116) is released. Therefore, by simultaneously gripping the operating lever (114) and the release plate (117) to release the engagement between the upper clamping portion (112B) and the pin (116), the right portion of the transmission tube (11) of the harvesting device (3) can be easily removed from the right support device (100R).

[0032] According to the invention of claim 6, in addition to the effects of the invention of claim 1, a cabin (9) is provided to cover the operation section (5), a gear box (72) is provided to increase or decrease the output rotation transmitted to the first transmission cylinder (15), an operation lever (73) is disposed on the left side of the cabin (9) to operate a shifter connecting part (72A) that switches the meshing of the gears of the gear box (72), and a left part of a first rod (73A) extending in the left-right direction of the operation lever (73) is connected to the shifter connecting part (72A), No. 1 Since the right part of the rod (73A) is rotatably fixed to the support member (74) provided in the middle part of the first transmission cylinder (15) and the second rod (73B) extending upward from the right part of the first rod (73A) of the operating lever (73) is provided to the left of the support member (74) in a front view, the left wall of the cabin (9) can be extended further to the left to increase the working space inside the cabin (9). Also, an operator on the control section (5) can easily increase or decrease the raising speed of the raising device (17, 70) by operating the operating lever (73) to change the meshing of the gears of the gear box (72).

[0033] According to the invention described in claim 7, in addition to the effect of the invention described in claim 6, the second rod (73B) extends upward from the right part of the first rod (73A) and then extends toward the cabin (9). Therefore, an operator on the control section (5) can operate the operating lever (73) to change the gear meshing of the gear box (72) and more easily increase or decrease the raising speed of the raising device (17, 70).

[0034] According to the invention described in claim 8, in addition to the effects of the invention described in claim 6, a cover (19A) is provided to cover the upper side of the conveying device (19), and an oil controller (76) for oiling the reaping device (3) and the threshing device (4) is provided at a position overlapping with the cabin (9) in a side view, and the rear of the cover (19A) and the oil controller (76) are connected with a connecting member (79), so that an operator riding on the control unit (5) can operate the oil controller (76) to oil the reaping device (3) and the threshing device (4).

[0035] According to the invention of claim 9, in addition to the effect of the invention of claim 6, the front and rear frames (22) extending from the second transmission cylinder (13) extending in the left and right direction arranged at the bottom of the mowing frame (10) toward the grass division body (16) are provided at a predetermined interval in the left and right direction, and at least one stay (43) extending upward from the middle part of the frame (23) and a stay (44) are provided at the middle part of the frame (23) extending in the left and right direction connecting the middle parts of the front and rear frames (22). The left and right frames (44) extend left and right from the top of the vertical transmission tube (43), and the vertical axis of the vertical transmission tube (41) is offset from the left and right center of the pair of left and right lifting devices (17, 70) detachably fixed to the left and right frames (44) and the left and right transmission tube (42). Therefore, the hanging frame provided between the pair of left and right lifting devices (17, 70) can be quickly attached and detached from the vertical transmission tube (41), and the pair of left and right lifting devices (17, 70) can be quickly attached and detached. In addition, by removing the lifting devices (17, 70) from the left and right transmission tubes (42) and the left and right frames (44), a large working space can be secured in front of the conveying device (19), and the straw stuck in the conveying device (19) can be easily removed.

[0036] According to the invention of claim 10, in addition to the effects of the invention of claim 9, an abutment member (41A) is provided at the upper part of the upper and lower transmission cylinders (41) to abut against the upper parts of the rear walls of the pair of left and right lifting devices (17, 70), a left connecting portion (42L) is provided at the left part of the left and right transmission cylinders (42) to connect the rear walls of the pair of left and right lifting devices (17, 70), and a right connecting portion (42R) is provided at the right part of the left and right transmission cylinders (42) to connect the rear walls of the pair of right and left lifting devices (17, 70). In a side view, the front faces of the abutment member (41A), the front face of the left connecting portion (42L), and the front face of the right connecting portion (42R) are formed parallel to each other. This makes it possible to more quickly attach and detach the pair of left and right lifting devices (17, 70).

[0037] According to the invention described in claim 11, in addition to the effects of the invention described in claim 10, in a side view, the front surface of the abutment member (41A), the front surface of the left connecting portion (42L), and the front surface of the right connecting portion (42R) are formed at a predetermined intersection angle with the axis of the upper and lower transmission cylinders (41), so that the pair of left and right lifting devices (17, 70) can be attached and detached even more quickly.

[0038] According to the invention described in claim 12, in addition to the effects of the invention described in claim 9, a conversion part (18A) that converts the output rotation of a rotating shaft mounted inside the second transmission cylinder (13) into swinging movement is provided on the rear side of the cutting blade device (18), and a front-rear rod (91) is provided extending from the rear of the front-rear frame (22) located at the far right toward the right wall of the second transmission cylinder (13), thereby making it possible to prevent the toes of the operator from coming into contact with the conversion part (18A).

[0039] According to the invention described in claim 13, in addition to the effects of the invention described in claim 12, a rectangular protective plate (92) that covers the conversion portion (18A) is provided in the middle of the front and rear rods (91) in a side view, thereby making it possible to further prevent the toes of the operator from coming into contact with the conversion portion (18A).

[0040] According to the invention described in claim 14, in addition to the effects of the invention described in claim 12, a protective rod (94) is provided in the middle of the front-rear rod (91) in a side view, which extends upward and then upward toward the rear, passes through the right part of the conversion part (18A), and reaches the upper side of the second transmission cylinder (13). This further prevents the toes of the operator from coming into contact with the conversion part (18A).

[0041] According to the invention of claim 15, in addition to the effect of the invention of claim 11, the right part of the lifting device (17B) located second from the left side of the lifting devices (17) and the left part of the lifting device (17C) located third from the left side of the lifting devices (17) are arranged to face each other, and the upper part of the lifting device (17B) is attached to the left part of the left and right transmission cylinders (42) by the left engagement part (47L), and the lower part is attached to the left part of the left and right frames (44) by the left clamping part (48L). Since the upper part of the lifting device (17C) is detachably fixed to the right part of the left-right transmission cylinder (42) by the right engaging part (47R) and the lower part is detachably fixed to the right part of the left-right frame (44) by the right clamping part (48R), the lifting device (17B) can be more easily removed by releasing the engagement of the left engaging part (47L) and releasing the clamping of the left clamping part (48L), and the lifting device (17C) can be more easily removed by releasing the engagement of the right engaging part (47R) and releasing the clamping of the right clamping part (48R).

[0042] According to the invention of claim 16, in addition to the effect of the invention of claim 11, a right side of the opposite side to be raised of the raising device (70B) located second from the left side of the raising devices (70) and a left side of the opposite side to be raised of the raising device (70C) located third from the left side of the raising devices (70) are arranged to face each other, and a right side of the opposite side to be raised of the raising device (70D) located fourth from the left side of the raising devices (70) and a left side of the raising device (70E) located fifth from the left side of the raising devices (70) are arranged to face each other. The left part of the lifting device (70B) is disposed opposite to the left part of the left-right transmission cylinder (42) extending from the lower part of the left-side vertical transmission cylinder (41) with a left engaging part (47L), and the lower part is detachably fixed to the left part of the left-side frame (44) extending from the upper part of the left-side stay (43) with a left clamping part (48L). The upper part of the lifting device (70C) is detachably fixed to the right part of the left-side transmission cylinder (42) extending from the lower part of the left-side vertical transmission cylinder (41) with a right engaging part (47R), and the lower part is detachably fixed to the left part of the left-side frame (44) extending from the upper part of the left-side stay (43) with a left clamping part (48L). The upper part of the lifting device (70D) is detachably fixed to the left part of the left and right frame (44) extending from the upper part of the right stay (43) by the left clamping part (48R), the upper part of the lifting device (70D) is detachably fixed to the left part of the left and right transmission cylinder (42) extending from the lower part of the right-side vertical transmission cylinder (41) by the left engagement part (47L), and the lower part is detachably fixed to the left part of the left and right frame (44) extending from the upper part of the right stay (43) by the left clamping part (48L). The right portion of the left and right transmission cylinders (42) is detachably fixed to the right portion of the left and right frame (44) extending from the upper portion of the right stay (43) by the right engaging part (47R), and the lower portion is detachably fixed to the right portion of the left and right frame (44) extending from the upper portion of the right stay (43) by the right clamping part (48R). Therefore, the lifting devices (70B, 70D) can be more easily removed by releasing the engagement of the left engaging part (47L) and releasing the clamping of the left clamping part (48L), and the lifting devices (70C, 70E) can be more easily removed by releasing the engagement of the right engaging part (47R) and releasing the clamping of the right clamping part (48R).

[0043] According to the invention of claim 17, in addition to the effects of the invention of claim 15 or 16, the left engagement part (47L) is formed of the engagement part (60) provided on the left and right transmission cylinders (42) and the first engaged part (61) erected on the rear surface of the raising device (17B, 70B, 70D), and the right engagement part (47R) is formed of the engagement part (60) provided on the left and right transmission cylinders (42) and the first engaged part (61) erected on the rear surface of the raising device (17C, 70C, 70E), and unevenness is formed on the first engaged part (61). Therefore, the engagement part (60) can be firmly engaged with the first engaged part (61) to fix the raising device (17, 70) in close contact with the left and right transmission cylinders (42).

[0044] According to the invention of claim 18, in addition to the effects of the invention of claim 15 or 16, the left clamping part (48L) is formed of an upper clamping part (65) and a lower clamping part (66) provided at the lower part of the raising device (17B, 70B, 70D), the right clamping part (48R) is formed of an upper clamping part (65) and a lower clamping part (66) provided at the lower part of the raising device (17C, 70C, 70E), and a pin (65B) extending in the left-right direction is provided at the upper clamping part (65), and the pin (65B) is fixed to the circle of the upper clamping part (65). The front portion of the arc-shaped upper clamping body portion (65C) is fixed, the front portion of the arc-shaped lower clamping body portion (66A) of the lower clamping portion (66) is rotatably fixed to the pin (65B), a second engaged portion (66B) is provided at the rear portion of the lower clamping body portion (66A), and the rear portion of the second engaged portion (66B) is curved downward and rearward, so that the upper clamping body portion (65C) and the lower clamping body portion (66A) tightly clamp the left and right frames (44), thereby enabling the lower portions of the lifting devices (17, 70) to be firmly fixed to the left and right frames (44).

[0045] According to the invention described in claim 19, in addition to the effects of the invention described in claim 18, an elastic material is laminated on the inner surfaces of the upper clamping body portion (65C) and the lower clamping body portion (66A), so that the left and right frames (44) can be clamped more closely by the upper clamping body portion (65C) and the lower clamping body portion (66A).

[0046] According to the invention described in claim 20, in addition to the effects of the invention described in claim 11, the left and right transmission cylinders (42) and the left and right frames (44) are connected at their left and right portions by the left upper and lower frame (45L) extending in the vertical direction, and the right and left transmission cylinders (42) and the left and right frames (44) are connected at their right and left portions by the right lower frame (45R) extending in the vertical direction. This increases the rigidity of the left and right transmission cylinders (42) and the left and right frames (44), and makes it possible to suppress deformation of the left and right transmission cylinders (42) and the left and right frames (44) when the lifting device (17, 70) is removed from the left and right transmission cylinders (42) and the left and right frames (44).

[0047] According to the invention recited in claim 21, in addition to the effects of the invention recited in claim 20, in a side view, the upper and lower left frame (45L) and the lower right and lower right frame (45R) are arranged parallel to the rear surface of the lifting device (17, 70), thereby further increasing the rigidity of the left and right transmission cylinders (42) and the left and right frames (44). [Brief description of the drawings]

[0048] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. 4 is a front view of a frame for fixing the lifting device. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. 2 is a rear view of the upper part of the lifting device. [Figure 14] 11 is a perspective view of the left and right transmission cylinders and the rotation shaft of the lifting device when the connection is released; FIG. [Figure 15] FIG. 4 is a front view of the left and right transmission cylinders and the rotating shaft of the lifting device when the connection is released. [Figure 16] FIG. 4 is a front view of the connected left and right transmission cylinders and the rotating shaft of the lifting device. [Figure 17] FIG. 13 is a rear view of the frame for fixing the lifting device. [Figure 18] FIG. 18 is an enlarged rear view of the main part of FIG. [Figure 19] FIG. 4 is a perspective view of a nozzle support member. [Figure 20] FIG. 13 is a rear view of the upper portion of the lifting device illustrating the nozzle support member. [Figure 21] FIG. 4 is a left side view of the upper part of the lifting device illustrating the nozzle support member. [Figure 22] FIG. 13 is a left side view showing the lifting device fixed to the left and right transmission cylinders. [Figure 23] This is a left side view of the grass dividing frame in Figure 22 with the upper part moved forward. [Figure 24] FIG. 24 is a left side view of the lifting device of FIG. 23 with the upper part moved forward. [Diagram 25] 25 is a left side view of the lifting device of FIG. 24 with the lower part removed upward. [Figure 26] 1A is a plan view, FIG. 1B is a right side view, FIG. 1C is a front view, and FIG. 1D is a left side view of a lifting device illustrating a regulating pin. [Figure 27] 13 is a left side view of the engaging parts in which the engaging portions of the left and right transmission cylinders and the engaged portions of the lifting device are engaged with each other. FIG. [Figure 28] 13 is a left side view of the engaging parts in which the engaging portions of the left and right transmission cylinders and the engaged portions of the lifting device are disengaged from each other. FIG. [Figure 29] FIG. 13 is a left side view of an engaging part of the lifting device that holds the left and right frames. [Diagram 30] 13 is a left side view of the engaging part of the lifting device when the clamping of the left and right frames is released. FIG. [Diagram 31] FIG. 13 is a front view of another combine harvester. [Diagram 32]FIG. 1 is a front view of a side light fixed to a left side mirror frame. [Diagram 33] FIG. 2 is a perspective view of the mowing device illustrating an operating lever. [Diagram 34] FIG. 4 is a plan view of the harvesting device, illustrating the operating lever. [Diagram 35] FIG. 4 is a right side view of the harvesting device illustrating the oil controller. [Diagram 36] FIG. 36 is an enlarged right side view of the main part of FIG. 35. [Figure 37] FIG. 2 is a plan view of the harvesting device illustrating the oil controller. [Figure 38] FIG. 4 is an explanatory diagram of a switch of the lubrication controller. [Figure 39] FIG. 2 is a right side view of the blade protection part of the first embodiment. [Diagram 40] FIG. 40 is a right side view showing the front and rear rods of FIG. 39 with a safety plate attached thereto. [Diagram 41] FIG. 11 is a right side view of the blade protection part of the second embodiment. [Diagram 42] FIG. 42 is a right side view showing the rear portion of the front and rear rod of FIG. 41 fixed to the right wall of the transmission cylinder. [Diagram 43] FIG. [Diagram 44] FIG. [Diagram 45] FIG. 13 is a left side view showing the lifting device engaged with the left part of the reaping device. [Figure 46] FIG. 11 is a front view showing the lifting device attached to the left part of the reaping device. [Figure 47] FIG. 13 is a right side view showing the lifting device attached to the front of the control unit. [Figure 48] This is a left side view showing the lifting device attached to the top of the threshing device. [Figure 49] FIG. 13 is a left side view showing the lifting device engaged with the nano-guide. [Figure 50] FIG. 4 is a left side view of the harvesting device illustrating the side mirror. [Figure 51] FIG. 2 is a perspective view of a support device that supports the reaping device. [Figure 52] FIG. [Diagram 53] FIG. [Figure 54] FIG. [Figure 55] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0049] As shown in Figures 1 and 2, a combine harvester has a traveling device 2 consisting of a pair of left and right crawlers that travels on the soil surface on the underside of a body frame 1, a harvesting device 3 that harvests grain stalks in the field is provided on the front side of the body frame 1, a threshing device 4 that threshes and sorts the harvested grain stalks is provided on the rear left side of the harvesting device 3, and a control unit 5 on which an operator rides is provided on the rear right side of the harvesting device 3.

[0050] Below the control unit 5 is an engine room 6 in which an engine is mounted, and behind the control unit 5 is a grain tank 7 in which threshed and sorted grains are stored, and behind the grain tank 7 is a discharge auger 8 consisting of a vertically extending grain lifting section and a horizontal discharge section extending back and forth to discharge grains to the outside.

[0051] The reaping frame 10 of the reaping device 3 is formed of a transmission tube 11 extending in the left-right direction to transmit the output rotation of the engine, a transmission tube 12 extending downward and forward from the right part of the transmission tube 11, a transmission tube (a "second transmission tube" in the claims) 13 extending in the left-right direction from the lower part of the transmission tube 12, a transmission tube 14 extending upward from the left part of the transmission tube 13, and a transmission tube (a "first transmission tube" in the claims) 15 extending in the left-right direction from the upper part of the transmission tube 14. Note that a rotating shaft to which the output rotation of the engine is transmitted is installed inside the transmission tubes 11-15 via bearings or the like.

[0052] The harvesting frame 10 is equipped with a harvesting body 16 for harvesting the culms planted in the field, a lifting device 17 for raising the harvested culms, a pair of left and right cutting blade devices 18 for cutting the base of the raised culms, and a transport device 19 for clamping the harvested culms and transporting them to the threshing device 4.

[0053] 3 and 4, the right part of the transmission cylinder 11 and the middle part of the transmission cylinder 15 are connected by a connecting member 20 made of round steel, and the right part of the transmission cylinder 15 and the right part of the transmission cylinder 13 are connected by a connecting member 21 made of round steel. As a result, the left part of the transmission cylinder 15 is supported by the transmission cylinder 14, the middle part of the transmission cylinder 15 is supported by the connecting member 20, and the right part of the transmission cylinder 15 is supported by the connecting member 21, so that deformation of the transmission cylinder 15, such as bending and twisting, can be suppressed.

[0054] The connecting member 20 extends from the right part of the transmission cylinder 11 to the upper front side so as to pass over the upper side of the conveying device 19, then extends forward, and then extends forward and downward to reach the transmission cylinder 15. The connecting member 21 extends from the right part of the transmission cylinder 13 to the upper front side so as to pass over the upper side of the conveying device 19, then extends upward, and then extends forward and upward to reach the transmission cylinder 15.

[0055] As shown in Fig. 5, the divided grass body 16 is formed of five divided grass bodies 16A to 16E. The divided grass bodies 16A to 16E are fixed to the front parts of the front-rear frames 22 extending forward from the transmission tubes 13 provided at a predetermined interval in the left-right direction. In addition, the divided grass bodies 16A to 16E are connected by a frame 23 formed of a round pipe that connects the middle parts of the front-rear frames 22 provided on the leftmost side and the front-rear frames 22 provided on the rightmost side.

[0056] The lifting device 17 is composed of four lifting devices 17A to 17D. The right side of the lifting device 17B and the left side of the lifting device 17C are arranged opposite each other. This allows a total of four rows of culms to be lifted at the same time: two rows between the lifting devices 17A and 17B, and two rows between the lifting devices 17C and 17D.

[0057] As shown in Fig. 6, a rotating shaft (not shown) supporting a driving sprocket provided on the upper part of the lifting device 17A is connected to a rotating shaft 31L of the upper and lower transmission tubes 30L extending downward from the left part of the transmission tube 15, and the lower part of the lifting device 17A is fixed to a rectangular connecting member 33L provided on a stay 32L that curves upward and to the right from the left part of the frame 23. As a result, the output rotation of the engine transmitted to the rotating shaft installed in the transmission tube 15 is transmitted to the driving sprocket of the lifting device 17A via the rotating shaft 31L installed in the upper and lower transmission tubes 30L to rotate the lifting chain. In addition, a cover 25 is provided on the front side of the transmission tube 15.

[0058] A rotating shaft (not shown) supporting a drive sprocket provided on the upper part of the lifting device 17D is connected to a rotating shaft 31R of the upper and lower transmission cylinders 30R extending downward from the right part of the transmission cylinder 15, and the lower part of the lifting device 17D is fixed to a rectangular connecting member 33R provided on a stay 32R curving upward and leftward from the right part of the frame 23. As a result, the output rotation of the engine transmitted to the rotating shaft mounted inside the transmission cylinder 15 is transmitted to the drive sprocket of the lifting device 17D via the rotating shaft 31R mounted inside the upper and lower transmission cylinders 30R, and can rotate the lifting chain.

[0059] A raising frame 40 is provided at the middle part of the transmission cylinder 15 in the left-right direction. The raising frame 40 is formed of an upper and lower transmission cylinder 41 extending downward from the middle part of the transmission cylinder 15, and a left-right transmission cylinder 42 extending in the left-right direction from the lower part of the upper and lower transmission cylinder 41. A rotating shaft for transmitting the output rotation of the engine is installed inside the upper and lower transmission cylinders 41 and the left-right transmission cylinders 42 via bearings, etc., and the rotating shaft inside the left-right transmission cylinder 42 extends in the left-right direction and then extends forward from both side parts via bevel gears.

[0060] As shown in Figures 7 to 11, the left-right center of the left-right transmission cylinder 42 is provided at a position shifted leftward from the axis extending in the up-down direction of the up-down transmission cylinder 41. That is, the length L1 of the left-right transmission cylinder 42 extending leftward from the lower part of the up-down transmission cylinder 41 is formed longer than the length L2 of the left-right transmission cylinder 42 extending leftward from the lower part of the up-down transmission cylinder 41. As a result, as shown in Figure 5, the left-right center of the lifting device 17B and the lifting device 17C is provided at a position shifted leftward from the axis extending in the up-down direction of the up-down transmission cylinder 41, and the upper part of the lifting device 17B and the lifting device 17C can be easily attached and detached from the up-down transmission cylinder 41.

[0061] A connecting portion 42A is provided at the rear of the left and right transmission cylinder 42, at a position of length L3 to the right of the lower portion of the up and down transmission cylinder 41, where a rotating shaft for an auxiliary lifting device (not shown) can be provided. In this embodiment, the length L1 is the sum of the lengths L2 and L3. For example, when the length L2 is 135 mm and the length L3 is 45 mm, the length L1 is set to 180 mm. This makes it possible to suppress the twisting of the rotating shaft (not shown) that is built in the left and right transmission cylinder 42 and extends in the left and right direction, which occurs due to the moment applied to the rotating shaft.

[0062] An abutting member 41A is provided on the upper part of the vertical transmission tube 41 to abut the upper parts of the lifting device 17B and the lifting device 17C. In addition, in a side view, the left front surface of the left connecting part 42L, which houses the rotating shaft 46L of the left and right transmission tubes 42, and the right front surface of the right connecting part 42R, which houses the rotating shaft 46R, are formed at a predetermined intersection angle with the axis extending in the vertical direction of the vertical transmission tube 41, and are formed approximately parallel to the front surface of the abutting member 41. As a result, the upper ends of the lifting device 17B and the lifting device 17C can be abutted against the abutting member 41A, and the upper parts of the lifting device 17B and the lifting device 17C can be attached and detached to the left front surface of the left connecting part 42L and the right front surface of the right connecting part 42R, respectively. In this specification, the rotating shaft 46L and the rotating shaft 46R are collectively referred to as the rotating shaft (the "first rotating shaft" in the claims) 46.

[0063] When the raising frame 40 is attached to the transmission cylinder 15, the upper and lower transmission cylinders 41 are attached in a posture extending downward and forward from the transmission cylinder 15. In addition, the left front surface of the left connecting part 42L and the right front surface of the right connecting part 42R are formed symmetrically, and a pair of upper and lower openings for inserting bolts or the like are formed at a position offset to the left from the center in the left-right direction on the left front surface of the left connecting part 42L, and a pair of upper and lower openings for inserting bolts or the like are formed at a position offset to the right from the center in the left-right direction on the right front surface of the right connecting part 42R. This allows the upper parts of the raising device 17B and the raising device 17C to be easily attached and detached from the left front surface of the left connecting part 42L and the right front surface of the right connecting part 42R, respectively.

[0064] The outer diameter of the left and right transmission cylinders 42 is larger than the outer diameter of the upper and lower transmission cylinders 41. This allows the diameter of a rotating shaft (not shown) extending in the left-right direction along the left and right transmission cylinders 42 to be increased, and the output rotation of the engine can be efficiently transmitted to the raising devices 17B and 17C. The upper parts of the raising devices 70B and 70C described below are fixed to the raising frame 40 provided on the left side of the middle part of the transmission cylinder 15, and the upper parts of the raising devices 70D and 70E are fixed to the raising frame 40 provided on the right side of the middle part of the transmission cylinder 15.

[0065] 6, a stay 43 is provided at the middle part of the frame 23, extending upward from the middle part, and left and right frames 44 made of round pipes and extending in the left and right direction are provided on the upper part of the stay 43. In addition, restricting members 44L, 44R made of washers or the like are provided on both sides of the left and right frames 44. This makes it possible to prevent a left clamping part 48L and a right clamping part 48R, which will be described later, from coming off the left and right frames 44 in the left and right direction.

[0066] The left parts of the left and right transmission cylinders 42 and the left and right frames 44 are connected by the left upper and lower frames 45L, and the right parts of the left and right transmission cylinders 42 and the left and right frames 44 are connected by the right upper and lower frames 45R. This increases the rigidity of the left and right transmission cylinders 42 and the left and right frames 44, and suppresses deformation of the left and right transmission cylinders 42 and the left and right frames 44 even when the lifting devices 17B and 17C are removed. In addition, when viewed from behind, the upper and lower transmission cylinders 41, the left and right transmission cylinders 42, the stays 43, the left and right frames 44, the left upper and lower frames 45L, and the right upper and lower frames 45R are disposed inside the outer peripheries of the lifting devices 17B and 17C.

[0067] 6, a rotating shaft 51L supporting a driving sprocket 50L (described later) provided on the upper part of the lifting device 17B is connected to a rotating shaft 46L of the left and right transmission cylinders 42. As a result, the output rotation of the engine transmitted to the rotating shaft installed in the transmission cylinder 15 is transmitted to the driving sprocket 50L of the lifting device 17B via the rotating shafts 46L installed in the upper and lower transmission cylinders 41 and the left and right transmission cylinders 42, etc., to rotate the lifting chain 56.

[0068] The rotating shaft 51R supporting the driving sprocket 50R provided on the upper part of the lifting device 17C is connected to the rotating shaft 46R of the left and right transmission cylinders 42. As a result, the output rotation of the engine transmitted to the rotating shaft installed inside the transmission cylinder 15 is transmitted to the driving sprocket 50R of the lifting device 17C via the rotating shaft 46R installed inside the upper and lower transmission cylinders 41 and the left and right transmission cylinders 42, etc., to rotate the lifting chain 56.

[0069] 12 and 13, the front end of the rotating shaft 46L extends forward of the front surface of the left connecting part 42L, and the rear end of the rotating shaft 51L supporting the drive sprocket 50L provided on the upper part of the lifting device 17B is located forward of the rear surface of the lifting device 17B. This makes it easy to connect the front end of the rotating shaft 46L of the left connecting part 42L to the rear end of the rotating shaft 51L of the lifting device 17B.

[0070] The front end of the rotating shaft 46R extends forward of the front surface of the right connecting part 42R, and the rear end of the rotating shaft 51R supporting the drive sprocket 50R provided on the upper part of the raising device 17C is located forward of the rear surface of the raising device 17C. This allows the front end of the rotating shaft 46R of the right connecting part 42R to be easily connected to the rear end of the rotating shaft 51R of the raising device 17C. In this specification, the driving sprockets 50L and 50L are collectively referred to as the driving sprocket 50, and the rotating shafts 51L and 51R are collectively referred to as the rotating shaft (the "second rotating shaft" in the claims) 51.

[0071] As shown in Figs. 14 to 16, a polygonal convex portion 54A is formed at the front of the rotating shaft 46L, and a chamfered portion (a "first chamfered portion" in the claims) 54B is formed at the front end of the outer periphery of the convex portion 54A. A polygonal recess 55A is formed at the rear of the rotating shaft 51L, and a chamfered portion 55B is formed at the rear end of the inner periphery of the recess 55A. This allows the convex portion 54A of the rotating shaft 46L to be easily inserted into the recess 55A of the rotating shaft 51L for connection. In addition, a polygonal convex portion 54A is formed at the front of the rotating shaft 46R, and a chamfered portion 54B is formed at the front end of the outer periphery of the convex portion 54A. A polygonal recess 55A is formed at the rear of the rotating shaft 51R, and a chamfered portion (a "second chamfered portion" in the claims) 55B is formed at the rear end of the inner periphery of the recess. This allows the convex portion 54A of the rotary shaft 46R to be easily inserted into the concave portion 55A of the rotary shaft 51R for connection.

[0072] The convex portions 54A of the rotating shafts 46L and 46R may be formed into a pentagonal, hexagonal, or spline shape instead of a square shape, and the concave portions 55A of the rotating shafts 51L and 51R may be formed into a pentagonal, hexagonal, or spline shape instead of a square shape.

[0073] The rotating shafts 46L and 46R are fixed to the left connecting portion 42L and the right connecting portion 42R via bearings, respectively, and the rotating shafts 51L and 51R are fixed to the raising devices 17B and 17C via bearings, respectively.

[0074] 17 and 18, a portion of the upper portion of the lifting device 17B adjacent to a portion facing the rotating shaft 46L is fixed to the left portion of the left-right transmission cylinder 42 via a left engaging part 47L such as a snap lock, and a lower portion of the lifting device 17B is fixed to the left portion of the left-right frame 44 via a left clamping part 48L such as a snap lock. This makes it possible to firmly maintain the connection between the rotating shaft 46L and the rotating shaft 51L.

[0075] The portion of the upper part of the lifting device 17C adjacent to the portion facing the rotating shaft 46R is fixed to the right part of the left and right transmission cylinder 42 via a right engaging part 47R such as a snap lock, and the lower part of the lifting device 17C is fixed to the right part of the left and right frames 44 via a right clamping part 48R such as a snap lock. The lower parts of the lifting device 70B and the lifting device 70C described later are fixed to both sides of the left and right frames 44 provided on the left side of the middle part of the frame 23, and the lower parts of the lifting device 70D and the lifting device 70E are fixed to both sides of the left and right frames 44 provided on the right side of the middle part of the frame 23. This makes it possible to firmly maintain the connection between the rotating shaft 46R and the rotating shaft 51R.

[0076] Nozzle support members ("support members" in claims) 49 that support oil nozzles that supply oil to the raising chains 56 of the raising devices 17B and 17C are provided on both left and right sides of the left and right transmission cylinders 42. In addition, the raising chains 56 are fitted with raising lugs 35 at a predetermined interval, and the raising lugs 35 stand up when the raising devices 17B, etc. are moving from the bottom to the top, and lie down when the raising devices 17B, etc. are moving from the top to the bottom.

[0077] As shown in Figures 19 to 21, the nozzle support member 49 is formed from a fixing portion 49A fixed to the left and right transmission cylinders 42, an upper pipe portion 49B extending downward and forward from the lower portion of the fixing portion 49A, a plate-shaped mounting portion 49C provided at the lower left portion of the upper pipe portion 49B, a mounting portion 49D formed by bending a plate provided at the lower right portion of the upper pipe portion 49B, a lower pipe portion 49E extending downward from the mounting portion 49D and then curving to one side, and a plate-shaped mounting portion 49F provided at the lower portion of the lower pipe portion 49E.

[0078] An oil nozzle (not shown) is attached to the mounting part 49C, a culm sensor 58A that measures the presence or absence of culms raised by the raising device 17B, etc. is attached to the mounting part 49D, and a tip guide 58B that guides the tip of the culm raised by the raising device 17B, etc., to the upper side is attached to the mounting part 49F. The culm sensor 58A is formed of a support part and a sensor body supported rotatably on the support part. When there is a raised culm, the long axis, which is the longitudinal direction of the sensor body, is in a parallel position parallel to the upper part of the tip guide 58B, and when there is no raised culm, the long axis of the sensor body is in an orthogonal position approximately perpendicular to the tip guide 58B. This makes it possible to prevent the tip of the culm from getting tangled in the sensor body, and the culm can be easily raised.

[0079] As shown in Fig. 22, the lower part of the hanging frame 24 extending downward and forward from the engagement member 52 provided at the front of the upper and lower transmission tubes 41 is rotatably supported by the pin 53 extending in the left-right direction provided at the rear of the divided grass body 16C. This allows the upper part of the hanging frame 24 to be disengaged from the engagement member 52 and the upper part of the hanging frame 24 to be pulled forward around the axis of the pin 53, as shown in Fig. 23, to easily attach and detach the lifting device 17B and the lifting device 17C.

[0080] As shown in FIG. 22, the upper part of the rear surface of the lifting device 17B, i.e., the portion below the drive sprocket 50L, is fixed to the left part of the left / right transmission cylinder 42 via the left engaging part 47L, and the lower part of the rear surface of the lifting device 17B is fixed to the left part of the left / right frame 44 via the left clamping part 48L.

[0081] When removing the lifting device 17B from the left and right transmission tubes 42, first, as shown in Fig. 24, the rotation shaft 51L of the lifting device 17B is disconnected from the rotation shaft 46L of the left and right transmission tubes 42, the upper part of the rear surface of the lifting device 17B is disengaged from the left engagement part 47L, and the upper part of the lifting device 17B is pulled forward around the axis of the left and right frames 44. Next, as shown in Fig. 25, the lower part of the lifting device 17B is disengaged from the left clamp part 48L, and the lower part of the lifting device 17B is removed from the left part of the left and right frames 44. This makes it possible to easily remove the straw entangled in the conveying device 19 arranged behind the lifting device 17B by removing the lifting device 17B from the left and right transmission tubes 42.

[0082] The left upper and lower frame 45L is provided parallel to the rear surface of the lifting device 17B. This makes it possible to further increase the rigidity of the left and right transmission cylinders 42 and the left and right frames 44.

[0083] Similarly, the upper part of the rear surface of the lifting device 17C, i.e., the portion below the drive sprocket 50R, is fixed to the right part of the left and right transmission cylinders 42 via the right engaging part 47R, and the lower part of the rear surface of the lifting device 17C is fixed to the right part of the left and right frames 44 via the left clamping part 48L.

[0084] When removing the lifting device 17C from the left and right transmission tubes 42, etc., similarly to the lifting device 17B, the connection between the rotation shaft 51R of the lifting device 17C and the rotation shaft 46R of the left and right transmission tubes 42 is released, the engagement between the upper part of the rear surface of the lifting device 17C and the right engagement part 47R is released, and the upper part of the lifting device 17C is pulled forward around the axis of the left and right frames 44. Next, the engagement between the lower part of the lifting device 17C and the right clamping part 48R is released, and the lower part of the lifting device 17C is removed from the right part of the left and right frames 44. This makes it possible to easily remove the straw entangled in the conveying device 19 arranged behind the lifting device 17C by removing the lifting device 17C from the left and right transmission tubes 42, etc.

[0085] The upper right and lower right frames 45R are provided parallel to the rear surface of the lifting device 17C. This allows the rigidity of the left and right transmission cylinders 42 and the right portions of the left and right frames 44 to be further increased.

[0086] As shown in Fig. 26, it is preferable to insert a snap pin 57 that restricts the movement of the starting chain 56 from above to below between the drive sprocket 50L and the tension sprocket 81 of the starting chain 56 of the starting device 17B removed from the left connecting portion 42L of the left and right transmission cylinders 42. The snap pin 57 is formed from a circular gripping portion used during insertion and a bifurcated snap portion that sandwiches the starting chain 56.

[0087] When the starting chain 56 rotates clockwise in an axial view about the rotation shaft 51L, the pin portion of the snap pin 57 contacts the tooth tip of the drive sprocket 50L to restrict the clockwise rotation of the starting chain 56. When the starting chain 56 rotates counterclockwise, the pin portion of the snap pin 57 contacts the tooth tip of the tension sprocket 81 to restrict the counterclockwise rotation of the starting chain 56. As a result, the rotation of the starting chain 56 of the starting device 17B removed from the left and right transmission cylinders 42 is prevented, the vertical movement of the starting lug 35 is restricted, and the starting device 17B can be easily reinstalled on the left connecting portion 42L without aligning the vertical position of the starting lug 35.

[0088] Similarly, it is preferable to insert the snap pin 57 from above to below between the drive sprocket 50R and the tension sprocket 81 of the starting chain 56 of the starting device 17C removed from the right connecting portion 42R of the left and right transmission cylinders 42.

[0089] As shown in Figs. 27 and 28, the left engaging part 47L is formed of an engaging part 60 provided on the left part of the left-right transmission tube 42 and an engaged part (the "first engaged part" in the claims) 61 provided on the rear surface of the lifting device 17B. The engaging part 60 is formed of a mounting plate 60A, a pin 60B provided on the mounting plate 60A and extending in the vertical direction, a lever 60C rotatably attached to the pin 60B, and a hook 60D provided on the lever 60C. The engaged part 61 extends rearward from the rear surface of the lifting device 17B, and the right part of the engaged part 61 is formed with a projection and recess for engaging with the hook 60D. This allows the upper part of the lifting device 17B to be easily attached and detached from the left part of the left-right transmission tube 42.

[0090] Similarly, the right engaging part 47R is formed of an engaging part 60 provided on the right part of the left-right transmission tube 42 and an engaged part 61 provided on the rear surface of the lifting device 17C. The engaging part 60 is formed of a mounting plate 60A, a pin 60B extending in the vertical direction provided on the mounting plate 60A, a lever 60C rotatably attached to the pin 60B, and a hook 60D provided on the lever 60C. The engaged part 61 extends rearward from the rear surface of the lifting device 17C, and the left part of the engaged part 61 is formed with a projection and recess that engages with the hook 60D. This allows the upper part of the lifting device 17C to be easily attached and detached from the right part of the left-right transmission tube 42.

[0091] As shown in FIGS. 29 and 30, the left clamping member 48L is formed of an upper clamping portion 65 provided on the lower part of the rear surface of the raising device 17B, and a lower clamping portion 66 provided below the upper clamping portion 65.

[0092] The upper clamping part 65 is formed of a mounting plate 65A, a pin 65B extending in the left-right direction provided on the lower part of the mounting plate 65A, a generally arcuate upper clamping body part 65C supported by the pin 65B, a pin 65D extending in the left-right direction provided on the upper part of the mounting plate 65A, a lever 65E rotatably attached to the pin 65D, and a hook 65F provided on the lever 65E. It is preferable that an elastic member such as rubber is laminated on the inner peripheral surface of the upper clamping body part 65C.

[0093] The lower clamping part 66 is formed by a substantially arc-shaped lower clamping main body part 66A rotatably supported by a pin 65B and an engaged part (the "second engaged part" in the claims) 66B provided at the rear end of the lower clamping main body part 66A. The rear part of the engaged part 66B is curved downward to the rear. Thereby, the lower part of the lifting device 17B can be easily attached to and detached from the left part of the left and right frames 44. It is preferable to laminate an elastic member such as rubber on the inner peripheral surface of the lower clamping main body part 66A, and the lower clamping main body part 66A can also be made of an elastic member with high hardness.

[0094] Similarly, the right clamping part 48R is formed by an upper clamping part 65 provided at the lower part of the rear surface of the lifting device 17C and a lower clamping part 66 provided below the upper clamping part 65.

[0095] The upper clamping part 65 is formed by a mounting plate 65A, a pin 65B extending in the left-right direction provided at the lower part of the mounting plate 65A, a substantially arc-shaped upper clamping main body part 65C supported by the pin 65B, a pin 65D extending in the left-right direction provided at the upper part of the mounting plate 65A, a lever 65E rotatably mounted on the pin 65D, and a hook 65F provided on the lever 65E. It is preferable to laminate an elastic member such as rubber on the inner peripheral surface of the upper clamping main body part 65C.

[0096] The lower clamping part 66 is formed by a substantially arc-shaped lower clamping main body part 66A rotatably supported by a pin 65B and an engaged part 66B provided at the rear end of the lower clamping main body part 66A. The rear part of the engaged part 66B is curved downward to the rear. Thereby, the lower part of the lifting device 17C can be easily attached to and detached from the left part of the left and right frames 44. It is preferable to laminate an elastic member such as rubber on the inner peripheral surface of the lower clamping main body part 66A, and the lower clamping main body part 66A can also be made of an elastic member with high hardness.

[0097] Figs. 31 and 32 illustrate other combines for six-row cutting. The same parts as those of the four-row cutting combine described above are denoted by the same reference numerals and the description thereof is omitted.

[0098] The lifting device 70 of the harvesting device 3 is formed of six lifting devices 70A to 70F. The right side of the lifting device 70B and the left side of the lifting device 70C are arranged opposite each other, and the right side of the lifting device 70D and the left side of the lifting device 70E are arranged opposite each other. This allows a total of six rows of stalks to be lifted simultaneously: two rows between the lifting devices 70A and 70B, two rows between the lifting devices 70C and 70D, and two rows between the lifting devices 70E and 70F. The steering unit 5 is covered by a cabin 9.

[0099] The lifting device 70A is fixed to the connecting member 33L between the upper and lower transmission cylinders 30L and the stays 32L, and the lifting device 70F is fixed to the connecting member 33R between the upper and lower transmission cylinders 30R and the stays 32R. The lifting device 70A is formed similarly to the lifting device 17A, and the lifting device 70F is formed similarly to the lifting device 17D.

[0100] The lifting device 70B is fixed to the left part of the left and right transmission tubes 42 of the lifting frame 40 provided on the left side of the intermediate part and to the left part of the left and right frame 44 provided on the left side of the intermediate part, and the lifting device 70D is fixed to the left part of the left and right transmission tubes 42 of the lifting frame 40 provided on the right side of the intermediate part and to the left part of the left and right frame 44 provided on the left side of the intermediate part. The lifting devices 70B and 70D are formed in the same manner as the lifting device 17B.

[0101] The lifting device 70C is fixed to the right part of the left and right transmission tube 42 of the lifting frame 40 provided on the left side of the intermediate part and to the right part of the left and right frame 44 provided on the left side of the intermediate part, and the lifting device 70E is fixed to the right part of the left and right transmission tube 42 of the lifting frame 40 provided on the right side of the intermediate part and to the right part of the left and right frame 44 provided on the right side of the intermediate part. The lifting devices 70C and 70E are formed in the same manner as the lifting device 17C.

[0102] 33 and 34, a gear box 72 that accelerates or decelerates the output rotation of the rotating shaft of the transmission cylinder 14 is provided at the connection between the transmission cylinder 14 and the transmission cylinder 15. An operating lever 73 that operates a shifter (not shown) that switches the meshing gears of the gear box 72 is provided above the transmission cylinder 15 that is disposed behind the cover 25.

[0103] The operating lever 73 is formed of a horizontal rod ("first rod" in the claims) 73A extending in the left-right direction and a vertical rod ("second rod" in the claims) 73B standing on the right side of the horizontal rod 73A.

[0104] The left end of the horizontal rod 73A is connected to a shifter connection portion 72A provided on the outer surface of the gearbox 72, and the right end of the horizontal rod 73A is supported rotatably by a support member 74 provided in an upright position in the middle of the transmission tube 15.

[0105] The vertical rod 73B is provided close to the left side of the support member 74. The vertical rod 73B extends upward from the right part of the horizontal rod 73A, and then extends toward the control unit 5 at the upper front side. This allows the left wall of the cabin 9 to extend further leftward to increase the working space inside the cabin 9. Also, an operator on the control unit 5 can operate the operation lever 73 to change the meshing gear of the gear box 72 to increase or decrease the lifting speed of the lifting device 70A, etc. A grip 73C that the operator can hold is attached to the upper end of the vertical rod 73B.

[0106] As shown in Figures 35 to 37, both left and right sides of the reaping device 3 are covered with side covers 3A, and the upper front side of the reaping device 3 is covered with an upper cover 3B. An oil controller 76 that oils the reaping device 3 and the threshing device 4 is provided above the cover 19A that covers the upper side of the transport device 19.

[0107] The oil controller 76 is fixed to the upper surface of a plate-shaped support member 77 with its operation surface facing the control unit 5. The support member 77 extends to the right side, i.e., to the control unit 5 side, from a stay 78 erected at the rear of the upper surface of the cover 19A, and is then fixed to the upper part of a pipe-shaped connecting member 79 extending upward. This allows an operator riding on the control unit 5 to operate switches 76A, 76B of the oil controller 76 to oil the reaping device 3 and the threshing device 4. Reference numeral 20A denotes a cutting blade lever that adjusts the height at which the cutting blade device 18 cuts the base of the culm.

[0108] As shown in Fig. 38, a pair of left and right switches 76A, 76B are provided on the operation surface of the oil controller 76. As shown in the labels below the switches 76A, 76B, oil can be poured into the threshing device 4 by rotating the rotary operation part of the switch 76A counterclockwise to move it toward the 9 o'clock direction. In addition, oil can be poured into the lifting chain of the lifting device 70A of the reaping device 3 by rotating the rotary operation part of the switch 76B counterclockwise to move it toward the 9 o'clock direction while rotating the rotary operation part of the switch 76A clockwise to move it toward the 3 o'clock direction, and oil can be poured into the cutting blade device 18 of the reaping device 3 by rotating the rotary operation part of the switch 76B clockwise to move it toward the 3 o'clock direction.

[0109] <Blade protection portion of the first embodiment> 39, the cutting blade protection part 90 of the first embodiment is provided with a front-rear rod 91 extending in the front-rear direction at the rear of the front-rear frame 22 to which the lower part of the grass body 16E is fixed. The front-rear rod 91 extends downward and rearward from the rear of the front-rear frame 22, and then extends upward and rearward to the right of the transmission tube 13.

[0110] In a side view, the middle part of the front-rear rod 91 is provided at a position facing, i.e. overlapping, the conversion part 18A that transmits the output rotation of the transmission tube 13 to the right-side cutting blade device 18. The conversion part 18A converts the output rotation of the transmission tube 13 and transmits it to the cutting blade device 18 by swinging it left and right. This makes it possible to prevent twigs and the like blown into the field from getting caught in the sliding part of the conversion part 18A. In addition, when riding on the control unit 5, it is possible to prevent the operator's toes from accidentally coming into contact with the conversion part 18A, thereby improving safety when the operator rides on the control unit 5 or when dismounting from the control unit 5.

[0111] As shown in Fig. 40, it is preferable to attach a rectangular protective plate 92 to the middle of the front and rear rod 91 to prevent the intrusion of twigs and the like from the outside. This can further prevent twigs and the like from getting caught in the sliding part of the conversion part 18A, and can further improve the safety of the operator when boarding the control part 5. The upper part of the protective plate 92 is engaged with a pair of front and rear engaging parts 93A formed on a support member 93 extending in the front and rear direction and supporting the lower part of the right side cover 3A.

[0112] <Blade protection section of second embodiment> A blade protection part 90 of the second embodiment is shown in Fig. 41. The same members as those of the blade protection part 90 of the first embodiment are given the same reference numerals and the description thereof will be omitted.

[0113] The blade protection part 90 of the second embodiment is provided with a protection rod 94 that extends upward from the middle part of the front-rear rod 91, and then extends upward toward the rear side to the upper side of the transmission tube 13. This makes it possible to prevent twigs, etc., blown into the field from getting caught in the sliding part of the conversion part 18A. In addition, when getting on the control part 5, it is possible to prevent the operator's toes from accidentally coming into contact with the conversion part 18A, thereby improving safety when the operator gets on or off the control part 5.

[0114] 42, in order to increase the rigidity of the front-rear rod 91, it is preferable to support the rear portion of the front-rear rod 91 on the right wall of the transmission cylinder 13 via a support member 95 provided on the right wall of the transmission cylinder 13. This allows the middle portion of the front-rear rod 91 to be held in a position overlapping with the conversion unit 18A in a side view, thereby further improving the safety of the operator when boarding the control unit 5.

[0115] As shown in Figs. 27, 28, 43 and 44, the pulling device 17, 70 is provided with a tension adjusting section 80 for adjusting the tension of the pulling chain 56 engaged with the driving sprocket 50L.

[0116] The tension adjustment unit 80 is formed of a tension sprocket 81 and a moving unit 82 that moves the tension sprocket 81 in the vertical direction.

[0117] The moving section 82 is formed of a frame 84 fixed to a bracket 83 into which the rotating shaft 51L supporting the drive sprocket 50L is fitted, and an adjustment member 86 that moves a bracket 85, into which the rotating shaft supporting the tension sprocket 81 is fitted, in the vertical direction relative to the frame 84. As a result, when the bracket 85 is moved upward with the adjustment member 86, the tension in the pulling chain 56 is tightened, and when the bracket 85 is moved downward with the adjustment member 86, the tension in the pulling chain 56 is relaxed.

[0118] In side view, the frame 84 is formed in a J shape, and a hook 87 is formed extending upward from the upper part of the bracket 85, then extending rearward from the upper end, and then extending downward from the rear end. A pair of upper and lower hooks 88 are provided at a vertically intermediate part on the back of the raising device 17, shifted toward the side where the raising lug 35 raises the stalks. It is preferable to attach an elastic member made of urethane or rubber to the inner peripheral surface of the hooks 87, 88 in order to suppress vibration.

[0119] When the lifting devices 17B, 17C of the 4-row harvester or the lifting devices 70B-70E of the 6-row harvester are removed to easily remove the stalks entangled in the transport device 19 arranged behind the lifting devices 17E, etc., the hooks 87 of the lifting devices 70E, etc. can be engaged with the fasteners (not shown) of the grass body 16 provided on both the left and right sides of the harvesting device 3 as shown in Figs. 45 and 46, or with the fasteners (not shown) of the lifting guide 5A extending in the vertical direction provided in front of the step that the operator of the steering unit 5 holds when ascending and descending as shown in Fig. 47. This ensures a wide working space in front of the transport device 19, and prevents the operator from accidentally hitting his head against the lifting devices 70E, etc. In addition, it is also possible to prevent the lifting devices 70E, etc. from malfunctioning due to soil from the field adhering to the sliding parts of the lifting devices 70E, etc.

[0120] A sensor is provided near the fastener. When the sensor detects the lifting device 70E or the like being hooked to the fastener, the connection of the reaping clutch provided between the engine and the reaping device 3 is released, and the output rotation of the engine is no longer transmitted to the reaping device 3. This allows the hook 87 of the lifting device 70E or the like to be hooked to the fastener, allowing the stalks entangled in the conveying device 19 to be safely removed.

[0121] As shown in Figure 48, the hook 87 of the lifting device 70E or the like can be engaged with the opening / closing lever 4B that extends in the front-rear direction and opens and closes the threshing drum cover 4A that covers the upper part of the threshing drum of the threshing device 4. This can prevent soil from the field from adhering to the sliding parts of the lifting device 70E or the like, causing malfunction. It can also reduce the number of attachments such as fasteners.

[0122] As shown in Fig. 49, the hook 88 of the lifting device 70E etc. can be engaged with the narrow guide 1A extending in the front-rear direction of the machine frame 1, which shifts the uncut stalks planted on the left side of the traveling direction of the combine to the left. This can prevent soil from the field from adhering to the sliding parts of the lifting device 70E etc., causing malfunction, and can prevent the lifting device 70E etc. from falling off the narrow guide 1A.

[0123] As shown in Figure 50, a support member 26 extending upward and rearward is provided in the middle of the transmission tube 14 of the harvesting device 3, and a support member 27 extending upward is provided in the middle of the support member 26. A stay 96 is provided at the bottom of the support member 27, and a rod 97 made of round steel is provided on the stay 96, extending upward and frontward.

[0124] A left side mirror 98 is rotatably supported on the upper part of the rod 97, and a vehicle width light 99 is provided below the side mirror 98. This eliminates the need to provide a separate support member for supporting the vehicle width light 99, allowing the number of parts to be reduced.

[0125] In a side view, it is preferable that the rod 97 is shaped so that it extends upward from the stay 96, then extends rearward and upward, and then extends upward again. This makes it possible to easily change the position of the side mirror 98 by operating the rod 97 from the operation unit 5.

[0126] As shown in FIG. 51, the support device 100 that supports the transmission tube 11 of the harvesting device 3 is formed of a left support device 100L provided on the front left side of the machine frame 1, and a right support device 100R provided on the front right side.

[0127] The left support device 100L is formed of a fixed part 101 fixed to the machine frame 1, a support shaft 102 extending upward from the fixed part 101, and a rotating arm 103 rotatably attached to the support shaft 102. In addition, a clamping part 104 that clamps the left part of the transmission cylinder 11 is formed on the upper part of the rotating arm 103.

[0128] The right support device 100R is formed of a fixed part 110 that is fixed to the machine body frame 1, and an arm 111 above the fixed part 110. In addition, a clamping part 112 that clamps the right part of the transmission cylinder 11 is formed on the upper part of the arm 111.

[0129] As shown in Figures 52 and 53, the clamping portion 112 is formed of a lower clamping portion 112A provided on the upper side of the arm 111 and having a semicircular cutout portion formed in its upper part, and an upper clamping portion 112B provided on the upper side of the lower clamping portion 112A and having a semicircular cutout portion formed in its lower part.

[0130] Upper clamping portion 112B is rotatably fixed to a support shaft 111A extending in the left-right direction provided at the front part of arm 111 via a connecting body 113. An operating lever 114 for opening and closing upper clamping portion 112B is provided at the rear part of connecting body 113. Operating lever 114 is formed of connecting portion 114A extending upward and rearward from the rear part of connecting body 113, and lever 114B extending in the up-down direction provided at the rear end part of connecting portion 114A.

[0131] A locking member 115 extending downward and rearward is provided at the rear of the connecting portion 114A. In a front view, the locking member 115 is formed of an upper portion 115A extending downward from the upper end, an intermediate portion 115B extending downward to the left from the lower end of the upper portion 115A, and a lower portion 115C extending downward from the lower end of the intermediate portion 115B.

[0132] An opening formed in the lower part of lower portion 115C is fitted onto pin 116 extending in the left-right direction provided on the upper part of lower clamping portion 112A. Release plate 117 extending in the vertical direction is provided on the upper part of lower portion 115C, and release plate 117 extends in the vertical direction along operating lever 114.

[0133] In a front view, release plate 117 is formed of grip portion 117A extending downward to the right from the upper end, intermediate portion 117B extending downward to the left from the lower end of grip portion 117A, and lower portion 117C extending downward from the lower end of intermediate portion 117B and fixed to the upper portion of lower portion 115C. Grip portion 117A is provided adjacent to the left side of the upper portion of lever 114B, and the lower end portion of grip portion 117A abuts against the left surface of lever 114B.

[0134] When the operator grasps lever 114B and grip portion 117A, lower portion 117C moves to the left via intermediate portion 117B, and when the operator releases lever 114B and grip portion 117A, lower portion 117C moves to the right via intermediate portion 117B. This makes it possible to simultaneously grasp lever 114B and grip portion 117A to release the engagement between locking member 115 and pin 116 and easily open upper clamping portion 112B, thereby removing the right portion of transmission tube 11 of harvesting device 3 from right support device 100R.

[0135] As shown in Figures 54 and 55, a sun visor 121 that blocks direct sunlight and the like that covers the upper side of the control unit 5 is provided on the upper part of a support member 120 that extends in the vertical direction and is provided on the front wall of the grain tank 7. The rear part of the sun visor 121 is supported to be able to swing on the upper part of the support member 120. This allows the front part of the sun visor 121 to move in the vertical direction, and straw chips and the like that have accumulated on the upper part of the sun visor 121 can be easily dropped.

[0136] The sun visor 121 covers the upper side of a precleaner 122 and an air cleaner 123 that take in air to be supplied to the engine, which are provided between the control section 5 and the grain tank 7. Air from which impurities have been removed by the precleaner 122 is sent to the air cleaner 123 via a flexible pipe 124. This makes it possible to prevent rainwater from entering the inside of the precleaner 122 and the air cleaner 123. [Explanation of symbols]

[0137] 1 Aircraft frame 3 Reaping device 4. Threshing Equipment 5. Control Unit 9 Cabin 10. Reaping Frame 13 Transmission Cylinder (Second Transmission Cylinder) 15 Transmission Cylinder (First Transmission Cylinder) 16 minute plant 17 Raising device 17B Raising device 17C Raising device 18 Cutting blade device 18A conversion unit 19 Conveyor equipment 19A Cover 22 Front and rear frames 23 Frame 40 Raising Frame 41 Upper and lower transmission cylinders 41A Contact member 42 Left and right transmission cylinder 42L left connection part 42R Right connection part 43 Stay 44 Left and right frames 45L Left upper and lower frames 45R upper right and lower frame 46 Rotation axis (first rotation axis) 47L Left engagement part 47R Right engagement part 48L Left clamping part 48R Right clamping part 49 Nozzle support member (support member) 50 Drive sprocket 51 Rotation axis (second rotation axis) 54A Convex 54B Chamfer (1st chamfer) 55A Recess 55B Chamfered section (second chamfer) 56 Pulling Chain 57 Snap pin 58A Grain stalk sensor 58B Tip guide 60 Engagement part 61 Engaged part (first engaged part) 65 Upper clamping part 65B Pin 65C Upper clamp body 66 Lower clamping part 66A Lower clamp body 66B Engaged part (second engaged part) 70 Raising device 70B lifting device 70C lifting device 70D lifting device 70E lifting device 72 Gearbox 72A Shifter connection part 73 Operating lever 73A Horizontal rod (first rod) 73B Vertical rod (second rod) 74 Support member 76 Lubrication Controller 79 Connecting members 81 Tension sprocket 91 Front and rear rods 92 Protection Plate 94 Protective Rod 100L left support device 100R right support device 112A Lower clamping part 112B Upper clamping part 114 Operating lever 116 pin 117 Release Plate 117A Grip

Claims

1. A combine harvester having a harvesting device (3) provided in front of a machine frame (1) on which an engine is mounted, a threshing device (4) provided on the rear left side of the harvesting device (3), and a control section (5) provided on the rear right side of the harvesting device (3), A reaping frame (10) of the reaping device (3) is provided with a culm dividing body (16) for dividing the culms, a lifting device (17, 70) for raising the divided culms, a cutting blade device (18) for cutting the base of the raised culms, and a conveying device (19) for clamping the cut culms and conveying them to the threshing device (4), a first transmission cylinder (15) extending in the left-right direction for transmitting the output rotation of an engine disposed on the upper portion of the reaping frame (10); At least one raising frame (40) is provided at a left-right intermediate portion of the first transmission cylinder (15), The raising frame (40) is formed by an upper and lower transmission cylinder (41) extending downward from the first transmission cylinder (15) and a left and right transmission cylinder (42) extending left and right from the lower part of the upper and lower transmission cylinder (41), a protrusion (54A) is formed on a front portion of a first rotating shaft (46) mounted inside the left and right transmission cylinders (42), and a front end portion of the protrusion (54A) is extended forward beyond the front faces of the left connecting portion (42L) and the right connecting portion (42R) of the left and right transmission cylinders (42); a second rotating shaft (51) supporting a drive sprocket (50) around which a raising chain (56) of the raising device (17, 70) is wound, is formed at the rear of the second rotating shaft (51), and a rear end of the recess (55A) is positioned forward of the rear wall of the raising device (17, 70).

2. 2. A combine harvester as described in claim 1, wherein the convex portion (54A) is formed in a polygonal shape, a first chamfered portion (54B) is formed on the outer periphery of the front end portion of the convex portion (54A), and the concave portion (55A) is formed in a polygonal shape, and a second chamfered portion (55B) is formed on the inner periphery of the rear end portion of the concave portion (55A).

3. 3. A combine harvester as claimed in claim 1 or 2, wherein a snap pin (57) for restricting the rotation of the raising chain (56) of the raising device (17, 70) removed from the harvesting frame (10) is inserted into a portion between the drive sprocket (50) and the tension sprocket (81) of the raising chain (56).

4. Support members (49) are provided on both sides of the left and right transmission cylinders (42), and a tip guide (58B) for guiding the tip of the culm raised by the raising device (17, 70) is provided at the lower end of the support member (49). A culm sensor (58A) for detecting the raised culm is provided at its base so as to be freely swingable above the tip guide (58B) on the support member (49). A combine harvester as described in claim 1 or 2, configured such that, when viewed from the rear, when a raised culm is not detected, the long axis of the culm sensor (58A) and the tip of the tip guide (58B) are perpendicular to each other, and when a raised culm is detected, the long axis of the culm sensor (58A) and the tip of the tip guide (58B) are parallel to each other.

5. a left support device (100L) for supporting a left portion of the first transmission cylinder (15) and a right support device (100R) for supporting a right portion of the first transmission cylinder (15) are provided at a front portion of the vehicle body frame (1); a release plate (117) for engaging and releasing a pin (116) extending in the left-right direction between the upper clamping portion (112B) and the lower clamping portion (112A) is provided on the left side of an operating lever (114) for opening and closing an upper clamping portion (112B) provided above the lower clamping portion (112A) of the right support device (100R); A combine harvester as described in claim 1 or 2, wherein when the operating lever (114) and the grip portion (117A) of the release plate (117) are gripped, the engagement between the upper clamping portion (112B) and the pin (116) is released.

6. A cabin (9) is provided to cover the control section (5); a gear box (72) for increasing or decreasing the output rotation transmitted to the first transmission cylinder (15); An operating lever (73) for operating a shifter connecting portion (72A) for switching the meshing of the gears of the gear box (72) is disposed on the left side of the cabin (9); a left portion of a first rod (73A) extending in the left-right direction of the operating lever (73) is connected to the shifter connecting portion (72A), and a right portion of the first rod (73A) is rotatably fixed to a support member (74) provided in an intermediate portion of the first transmission cylinder (15); 2. A combine harvester according to claim 1, wherein a second rod (73B) extending upward from a right portion of a first rod (73A) of the operating lever (73) is provided to the left of a support member (74) in a front view.

7. 7. The combine harvester according to claim 6, wherein the second rod (73B) extends upward from a right portion of the first rod (73A) and then extends toward a cabin (9).

8. A cover (19A) is provided to cover the upper side of the conveying device (19), an oil controller (76) for oiling the reaping device (3) and the threshing device (4) is provided at a position overlapping with the cabin (9) in a side view; 8. A combine harvester according to claim 6 or 7, wherein a rear portion of the cover (19A) and an oil controller (76) are connected by a connecting member (79).

9. A front and rear frame (22) is provided at a predetermined interval in the left and right direction, the front and rear frames (22) extending from a second transmission cylinder (13) disposed at the bottom of the mowing frame (10) and extending in the left and right direction toward the grass body (16), At least one or more stays (43) extending upward from the intermediate portion of a frame (23) extending in the left-right direction connecting the intermediate portions of the front and rear frames (22) are provided in the intermediate portion of the frame (23), and left and right frames (44) extending in the left-right direction from an upper portion of the stay (43), A combine harvester as described in claim 6, wherein the axis extending in the vertical direction of the upper and lower transmission cylinders (41) is offset from the left-right center of a pair of left and right lifting devices (17, 70) which are removably fixed to the left and right frames (44) and the left and right transmission cylinders (42).

10. a contact member (41A) for contacting the upper part of the rear wall of the pair of left and right lifting devices (17, 70) is provided on the upper part of the vertical transmission cylinder (41); a left connecting portion (42L) for connecting rear walls of the pair of left lifting devices (17, 70) to the left of the left and right transmission cylinders (42); a right connecting portion (42R) for connecting rear walls of the right lifting devices (17, 70) of the pair of right and left transmission cylinders (42), 10. The combine harvester according to claim 9, wherein a front surface of the abutment member (41A), a front surface of the left connecting portion (42L), and a front surface of the right connecting portion (42R) are formed parallel to each other in a side view.

11. A combine harvester as described in claim 10, wherein, when viewed from the side, the front surface of the abutment member (41A), the front surface of the left connecting portion (42L), and the front surface of the right connecting portion (42R) are formed at a predetermined intersection angle with the axis of the upper and lower transmission cylinders (41).

12. a conversion section (18A) for converting the output rotation of a rotation shaft mounted inside the second transmission tube (13) into a swinging movement is provided on the rear side of the cutting blade device (18); 10. A combine harvester according to claim 9, further comprising a front-rear rod (91) extending from a rear portion of the front-rear frame (22) located at the rightmost position toward a right wall of the second transmission cylinder (13).

13. 13. The combine harvester according to claim 12, wherein a rectangular protective plate (92) for covering the conversion portion (18A) is provided in the middle of the front and rear rods (91) in a side view.

14. A combine harvester as described in claim 12, wherein, when viewed from the side, a protective rod (94) is provided in the middle portion of the front and rear rods (91), which extends upward, then extends upward toward the rear, passes through the right portion of the conversion portion (18A), and reaches the upper side of the second transmission cylinder (13).

15. The right side of the lifting device (17B) located second from the left side of the lifting devices (17) is disposed opposite to the left side of the lifting device (17C) located third from the left side of the lifting devices (17), The upper part of the lifting device (17B) is detachably fixed to the left part of the left-right transmission cylinder (42) by a left engaging part (47L), and the lower part is detachably fixed to the left part of the left-right frame (44) by a left clamping part (48L). A combine harvester as described in claim 11, wherein the upper part of the lifting device (17C) is detachably fixed to the right part of the left and right transmission cylinders (42) by a right engaging part (47R) and the lower part is detachably fixed to the right part of the left and right frames (44) by a right clamping part (48R).

16. The right side of the lifting device (70B) located second from the left side of the lifting devices (70) is disposed opposite to the left side of the lifting device (70C) located third from the left side of the lifting devices (70), The right side of the lifting device (70D) located fourth from the left side of the lifting devices (70) is disposed opposite to the left side of the lifting device (70E) located fifth from the left side of the lifting devices (70), The upper part of the lifting device (70B) is detachably fixed to the left part of the left-right transmission cylinder (42) extending from the lower part of the left-side vertical transmission cylinder (41) by a left engaging part (47L), and the lower part is detachably fixed to the left part of the left-right frame (44) extending from the upper part of the left-side stay (43) by a left clamping part (48L). The upper part of the lifting device (70C) is detachably fixed to the right part of the left-right transmission cylinder (42) extending from the lower part of the left-side vertical transmission cylinder (41) by a right engaging part (47R), and the lower part is detachably fixed to the right part of the left-right frame (44) extending from the upper part of the left-side stay (43) by a right clamping part (48R). The upper part of the lifting device (70D) is detachably fixed to the left part of the left-right transmission cylinder (42) extending from the lower part of the right-side vertical transmission cylinder (41) by a left engaging part (47L), and the lower part is detachably fixed to the left part of the left-right frame (44) extending from the upper part of the right-side stay (43) by a left clamping part (48L). A combine harvester as described in claim 11, wherein the upper part of the lifting device (70E) is detachably fixed to the right part of the left-right transmission cylinder (42) extending from the lower part of the right-side vertical transmission cylinder (41) by a right engaging part (47R), and the lower part is detachably fixed to the right part of the left-right frame (44) extending from the upper part of the right-side stay (43) by a right clamping part (48R).

17. The left engaging part (47L) is formed by an engaging part (60) provided on the left / right transmission cylinder (42) and a first engaged part (61) provided on a rear surface of the raising device (17B, 70B, 70D), The right engaging part (47R) is formed by an engaging part (60) provided on the left and right transmission cylinder (42) and a first engaged part (61) provided on a rear surface of the raising device (17C, 70C, 70E), The combine harvester according to claim 15 or 16, wherein the first engaged portion (61) is formed with projections and recesses.

18. The left clamping part (48L) is formed by an upper clamping part (65) and a lower clamping part (66) provided at the lower part of the lifting device (17B, 70B, 70D), The right clamping part (48R) is formed by an upper clamping part (65) and a lower clamping part (66) provided at the lower part of the lifting device (17C, 70C, 70E), The upper clamping portion (65) is provided with a pin (65B) extending in the left-right direction, The front portion of the arc-shaped upper clamping body portion (65C) of the upper clamping portion (65) is fixed to the pin (65B), A front portion of the arc-shaped lower clamping body portion (66A) of the lower clamping portion (66) is rotatably fixed to the pin (65B), A second engaged portion (66B) is provided at the rear of the lower clamping body portion (66A); 17. A combine harvester according to claim 15 or 16, wherein a rear portion of the second engaged portion (66B) is curved rearward and downward.

19. A combine harvester according to claim 18, wherein an elastic material is laminated on inner peripheral surfaces of the upper clamping body portion (65C) and the lower clamping body portion (66A).

20. A combine harvester as described in claim 11, wherein the left and right transmission tubes (42) and the left and right frames (44) are connected to each other by a left upper and lower frame (45L) extending in the vertical direction, and the right and left transmission tubes (42) and the left and right frames (44) are connected to each other by a right upper and lower frame (45R) extending in the vertical direction.

21. 21. The combine harvester according to claim 20, wherein the left upper and lower frames (45L) and the right upper and lower frames (45R) are disposed parallel to a rear surface of the lifting device (17, 70) in a side view.

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