combine

Abstract

To provide a combine in which a transmission cylinder provided above a reaping device and a pair of raising parts provided opposite to a non-raising action side are connected via a support arm, in which, when removing grain culm clogged in a convey device or the like, the pair of raising device is moved forward by rotating the support arm, in which a risk occurs where the support arm unexpectedly rotates to suddenly move the raising device forward if the frontward-moved raising device is not appropriately fixed in a harvest posture after removing the clogged grain culm, which risk is solved by the present combine in which the frontward-moved raising device is quickly returned to a storage position with a simple configuration and appropriately fixed to the harvest posture.SOLUTION: Any of a plurality of raising devices having a base part pivotally supported to a reaping frame 20 and connected to a tip part of a rotatable support arm 61 is movably provided between a harvest posture and an open posture in which the device is moved toward a front side of a vehicle body. A fixing mechanism A for fixing at a harvest posture is provided to a support arm 61.SELECTED DRAWING: Figure 41

Description

[Technical field]

[0001] The present invention relates to a combine harvester equipped with a lifting device for lifting divided culms. [Background technology]

[0002] In conventional combine harvesters, a transmission tube provided above the harvesting device and a pair of lifting devices with their non-lifting sides facing each other are connected by a support arm, and when removing straw that has become stuck in a conveying device provided behind the lifting devices, a technology was known in which the first and second horizontal arms of the support arm are rotated to move the lifting devices forward (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-29568 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the lifting device that has moved forward is not properly fixed in the harvesting position after the clogged stalks have been removed, there is a risk that the first and second horizontal arms of the support arm will rotate quickly against the operator's wishes, causing the lifting device to suddenly move forward.

[0005] Therefore, the main object of the present invention is to provide a combine harvester that can quickly return the lifting device that has moved forward to a stored position with a simple configuration after removing stalks stuck in the harvesting device, and can be properly fixed in the harvesting position. [Means for solving the problem]

[0006] The first aspect of the present invention is A combine harvester having a harvesting device (3) provided in front of a machine frame (1) on which an engine (E) is mounted, a thresher (4) provided behind the harvesting device (3), and the harvesting device (3) including a plurality of lifting devices (31A, 31B, 31C, 31D) for lifting culms in a field, a cutting blade device (32) for cutting the base of the culms, and a transport device (33) for transporting the harvested culms toward the thresher (4), wherein any of the plurality of lifting devices (31A, 31B, 31C, 31D) is connected to the tip of a rotatable support arm (61) whose base is pivotally supported on the harvesting frame (20) so as to be movable between a harvesting position and an open position moved to the front of the vehicle body, and a fixing mechanism (A) for fixing the harvesting position is provided on the support arm (61), Among the plurality of lifting devices (31A, 31B, 31C, 31D), the lifting devices (31B, 31C) at the left and right centers are connected to the tip of a support arm (61) so as to be movable between a harvesting posture and an open posture moved forward of the vehicle body, This combine harvester is characterized in that the fixing mechanism (A) is configured to insert a fixing body (300) into an insertion member (71b, 73b) provided at the tip of the support arm (61), and to insert the fixing body (300) into an insertion hole (24a) of a fixing bracket (24b) provided on the harvesting frame (20) and fix it. According to the first present invention, when removing stalks stuck in the conveying device 33 etc. during harvesting operation, any one of the multiple lifting devices 31A, 31B, 31C, 31D can be moved forward to an open position to increase the working space in front of the conveying device 33, making it possible to easily remove the stalks stuck in the conveying device 33, and the support arm 61 can be fixed to the harvesting frame 20 in the harvesting operation position and movement to the open position can be appropriately regulated with a simple configuration. The second aspect of the present invention is This is a first combine harvester of the present invention, characterized in that a fixing bracket (24b) is provided on a transmission case (24), which is a component of a harvesting frame (20) arranged along the upper part of a plurality of lifting devices (31A, 31B, 31C, 31D). The third aspect of the present invention is This is a first combine harvester of the present invention, characterized in that insertion members (71b, 73b) are provided at the tips of upper and lower first and second horizontal arms (71, 73) that constitute a support arm (61) whose base is pivotally supported. The first invention related to the present invention is a combine harvester in which a harvesting device 3 is provided in front of a body frame 1 on which an engine E is mounted, a thresher 4 is provided behind the harvesting device 3, and the harvesting device 3 is composed of a plurality of lifting devices 31A, 31B, 31C, 31D that lift up the culms in the field, a cutting blade device 32 that cuts the base of the culms, and a transport device 33 that transports the harvested culms toward the thresher 4. Any of the plurality of lifting devices 31A, 31B, 31C, 31D is connected to the tip of a support arm 61 which is pivotally supported at its base on the harvesting frame 20 and can be rotated, so that it can be freely moved between a harvesting position and an open position moved to the front of the vehicle body, and a fixing mechanism A that fixes it in the harvesting position is provided on the support arm 61.

[0007] The first invention related to the present invention According to this, any of the multiple lifting devices 31A, 31B, 31C, 31D is pivotally supported at its base on the harvesting frame 20 and connected to the tip of a rotatable support arm 61 so that it can be freely moved between a harvesting position and an open position moved to the front of the vehicle body, and a fixing mechanism A for fixing it in the harvesting position is provided on the support arm 61.Therefore, when removing stalks stuck in the conveying device 33 etc. during harvesting, any of the multiple lifting devices 31A, 31B, 31C, 31D can be moved forward to the open position to increase the working space in front of the conveying device 33, making it possible to easily remove stalks stuck in the conveying device 33, and the support arm 61 can be fixed to the harvesting frame 20 in the harvesting position and moved to the open position appropriately regulated with a simple configuration.

[0008] The second invention related to the present invention Among the multiple lifting devices 31A, 31B, 31C, and 31D, the lifting devices 31B and 31C at the left and right centers are connected to the tip of a support arm 61 and are provided so as to be freely movable between a harvesting position and an open position moved forward of the vehicle body. The first invention related to the present invention It is a combine harvester.

[0009] The third invention related to the present invention In the example shown in FIG. 1, the fixing mechanism A inserts the fixing body 300 through the insertion members 71b, 73b provided at the tip of the support arm 61, and the fixing body 300 is inserted into the insertion hole 24a of the fixing bracket 24b provided on the reaping frame 20 to be fixed. The first or second invention related to the present invention It is a combine harvester.

[0010] The fourth invention related to the present invention A fixing bracket 24b is provided on the transmission case 24, which is a component of the reaping frame 20 arranged along the upper part of the plurality of lifting devices 31A, 31B, 31C, and 31D. The third invention related to the present invention It is a combine harvester.

[0011] Fifth Invention Related to the Present Invention The support arm 61 is pivotally supported at its base. The upper and lower first and second horizontal arms 71 and 73 are provided with insertion members 71b and 73b at their tips. The third invention related to the present invention It is a combine harvester. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a left side view of a combine harvester according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 4 is a front view of the harvesting device in the stored position. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] A perspective view of the reaping device. [Figure 8] FIG. [Figure 9] FIG. 4 is an explanatory diagram of the transmission of the lifting device of the combine harvester. [Figure 10] FIG. [Figure 11] FIG. [Figure 12]FIG. [Figure 13] FIG. 4 is an explanatory diagram of a transmission case of the lifting device. [Figure 14] FIG. 2 is a left side view of the swinging part of the combine harvester. [Figure 15] FIG. 2 is a front view of the lifting device with its upper portion pulled out in front of the combine harvester. [Figure 16] FIG. 2 is a left side view of the lifting device with its upper portion pulled out in front of the combine harvester. [Figure 17] (a) and (b) are the fixed plate of the combine, (c) and (d) are the rotating plate, and (e) and (f) are a cross-sectional view and a left side view of the pin. [Figure 18] FIG. 2 is a perspective view of a first embodiment of a connecting part for preventing rotation of a lateral arm of the combine harvester. [Figure 19] FIG. [Figure 20] FIG. [Figure 21] FIG. 2 is a front view of the reaping device when it is moved forward of the combine harvester in an open position. [Figure 22] FIG. [Figure 23] FIG. [Figure 24] FIG. [Diagram 25] FIG. 2 is a front view of the harvester's reaping device when it is moved to the front left side of the combine harvester in an open position. [Figure 26] FIG. [Figure 27] FIG. [Figure 28] FIG. [Figure 29] FIG. 2 is a front view of the harvester's reaping device when it is in an open position moved to the front right side of the combine harvester. [Diagram 30] FIG. [Diagram 31] FIG. [Diagram 32] FIG. [Diagram 33]FIG. 2 is a left side view of the left stock base transport device of the combine harvester. [Diagram 34] FIG. [Diagram 35] FIG. 2 is a front view of a lifting device provided in the middle of the combine in the left-right direction. [Diagram 36] FIG. [Figure 37] FIG. 2 is an enlarged front view of the upper portion of the lifting device. [Figure 38] FIG. 4 is an enlarged left side view of the upper portion of the lifting device. [Figure 39] FIG. 2 is an enlarged plan view of the upper portion of the lifting device. [Diagram 40] FIG. 2 is an enlarged perspective view of a reaping device and a support arm of the combine harvester. [Diagram 41] FIG. 2 is an enlarged rear view of the support arm portion of the combine harvester. [Diagram 42] FIG. 4 is a side view for explaining the operation of the fixing mechanism of the combine harvester. [Diagram 43] FIG. 4 is a front view of a harvesting device showing another embodiment of the combine harvester. [Diagram 44] FIG. 4 is a side view of a harvesting device showing another embodiment of the combine harvester. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, a combine harvester according to an embodiment of the present invention will be described with reference to the attached drawings. In order to facilitate understanding, the directions are conveniently indicated as the front side, the rear side, the right hand side, and the left hand side as seen from the operator, but the configuration is not limited to these.

[0014] 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, provided below a machine frame 1, and a reaping device 3 that harvests stalks in a field, provided in front of the machine frame 1. In addition, a threshing device 4 that threshes and sorts the stalks harvested by the reaping device 3 is provided on the rear left side of the reaping device 3, and a control unit 5 on which an operator rides is provided on the rear right side of the reaping device 3.

[0015] An engine room 6 in which an engine E is mounted is provided below the control unit 5, and a grain tank 7 for storing grains that have been threshed and sorted by the threshing device 4 is provided behind the control unit 5. The grains stored in the grain tank 7 are discharged to the outside by a discharge auger 8 connected to the grain tank 7.

[0016] A front panel 10 is provided in front of the cockpit of the control section 5, and a side panel 15 is provided to the left of the cockpit.

[0017] A monitor 11 that displays the output rotation of the engine E, etc. is provided in the center of the front panel 10, and an operating lever 12 that controls the rotation of the traveling device 2 and the raising and lowering of the harvesting device 3 is provided on the right side of the monitor 11.

[0018] A main speed change lever 16 is provided at the front of the side panel 15 to operate a continuously variable transmission that increases / decreases the output rotation of the engine E and switches the rotation direction, and a sub-speed change lever 17 is provided behind the main speed change lever 16 to operate a transmission that increases / decreases the output rotation of the continuously variable transmission.

[0019] As shown in Figs. 3 to 7, the reaping device 3 is attached to a reaping frame 20, which serves as a main frame. The reaping frame 20 is formed of a transmission tube 21 extending in the front-rear direction, a transmission tube 22 extending in the left-right direction provided at the front of the transmission tube 21, a transmission tube 23 extending in the up-down direction provided at the left of the transmission tube 22, and a transmission tube 24 as a transmission case extending in the left-right direction provided at the top of the transmission tube 23. The rear part of the transmission tube 21 is supported so as to be swingable by a transmission tube 25 extending in the left-right direction provided at the front of the threshing device 4 to which the output rotation of the engine E is transmitted. This allows the front part of the transmission tube 21, i.e., the reaping device 3 to be raised and lowered in the up-down direction via the reaping frame 20 by driving a lifting cylinder (not shown) connected to the transmission tube 21. The transmission tubes 21 to 25 are provided with rotating shafts 21A to 25A to which the output rotation of the engine E or the like is transmitted.

[0020] The harvesting device 3 is composed of a dividing body 30 that divides the culms planted in the field, a raising device 31 that raises the divided culms, a cutting blade device 32 that cuts the raised culms, and a transport device 33 that clamps the cut culms and transports them to the threshing device 4.

[0021] The raising device 31 is provided with four raising devices 31A, 31B, 31C, and 31D in that order from the left. This allows the raising device 31A and the raising device 31B to raise the culms planted in one row, and the raising device 31C and the raising device 31D to raise the culms planted in the one row adjacent to the right side of the one row. The raising device 31B and the raising device 31C are connected via a connecting member (not shown).

[0022] Furthermore, reference numeral 39 denotes an auxiliary lifting device that assists the lifting work of the stalks by the lifting device 31A and the lifting device 31B, etc.

[0023] The cutting blade device 32 is made up of a left cutting blade device 32A provided on the left side of the cutting device 3 and a right cutting blade device 32B provided on the right side.

[0024] The conveying device 33 is formed of a stock base conveying device 34 that clamps and conveys the stock base of the harvested culm, and a tip conveying device 35 that clamps and conveys the tip of the harvested culm. The stock base conveying device 34 is formed of a left stock base conveying device 34A provided on the left side of the harvesting device 3 and a right stock base conveying device 34B provided on the right side, and the tip conveying device 35 is formed of a left tip conveying device 35A provided on the left side of the harvesting device 3 and a right tip conveying device 35B provided on the right side. In this specification, the left stock base conveying device 34A and the left tip conveying device 35A are collectively referred to as the left conveying device 33A, and the right stock base conveying device 34B and the right tip conveying device 35B are collectively referred to as the right conveying device 33B.

[0025] A support arm 60 is provided on the left side of the transmission cylinder 24, connecting the lower part of the transmission cylinder 24 to the upper part of the rear surface of the lifting device 31A, a support arm 61 is provided on the middle part of the transmission cylinder 24, connecting the lower part of the transmission cylinder 24 to the upper part of the rear surface of the lifting device 31B and the lifting device 31C, and a support arm 62 is provided on the right side of the transmission cylinder 24, connecting the lower part of the transmission cylinder 24 to the upper part of the rear surface of the lifting device 31D. A rotating shaft (not shown) for transmitting the output rotation of the engine E or the like is provided inside the support arms 60-62.

[0026] The support arm 60 extends downward from the lower part of the transmission tube 24, then curves forward and is connected to the rear surface of the lifting device 31A. The support arm 62 extends downward from the lower part of the transmission tube 24, then curves forward and is connected to the rear surface of the lifting device 31D.

[0027] The support arm 61 is formed of a first vertical arm 70 extending downward from the lower part of the transmission tube 24, a first horizontal arm 71 rotatably supported at the lower part of the first vertical arm 70, a second vertical arm 72 extending downward from the lower part of the tip of the first horizontal arm 71, a second horizontal arm 73 rotatably supported at the lower part of the first vertical arm 70, and a third vertical arm 74 extending downward from the lower part of the tip of the second horizontal arm 73, then curved forward and connected to the rear surface of the lifting device 31B and the lifting device 31C. As a result, when removing culms stuck in the conveying device 33, etc., the lifting device 31B and the lifting device 31C are moved forward to an open position as shown in FIG. 27, and the working space in front of the conveying device 33 is enlarged, so that the culms stuck in the conveying device 33 can be easily removed.

[0028] When the support arm 61 is in the stored position (harvesting position), the longitudinal direction of the first horizontal arm 71 and the longitudinal direction of the second horizontal arm 73 extend in the left-right direction along the transmission tube 24 and are provided on the rear side of the lifting device 31B and the lifting device 31C. This makes it possible to prevent the stalks and the like lifted by the lifting device 31A and the lifting device 31B from becoming entangled in the first horizontal arm 71 and the second horizontal arm 73.

[0029] <Transmission of engine output rotation> As shown in FIG. 8, the output rotation of the engine E is transmitted to a rotating shaft 25A mounted inside a transmission cylinder 25 via a belt 40 or the like.

[0030] The output rotation transmitted to the rotating shaft 25A is transmitted to the right tip conveying chain 35b of the right tip conveying device 35B via a gear 41 etc. provided in the middle part of the rotating shaft 25A. The output rotation transmitted to the rotating shaft 25A is also transmitted to the rotating shaft 21A installed in the transmission tube 21 via a gear 42 etc. provided on the right side of the rotating shaft 25A.

[0031] The output rotation transmitted to the rotating shaft 21A is transmitted to the right stock base conveying chain 34b of the right stock base conveying device 34B via a gear 43 etc. provided in the middle of the rotating shaft 21A. The output rotation transmitted to the rotating shaft 21A is also transmitted to the rotating shaft 22A installed in the transmission tube 22 via a gear 44 etc. provided in the front part of the rotating shaft 21A.

[0032] The output rotation transmitted to the rotating shaft 22A is transmitted to the left cutting blade device 32A via a swing rod 56 etc. provided on the left side of the rotating shaft 22A, and is transmitted to the right cutting blade device 32B via a swing rod 57 etc. provided on the right side of the rotating shaft 22A. The output rotation transmitted to the rotating shaft 22A is transmitted to the rotating shaft 23A mounted inside the transmission tube 23 via a gear 45 etc. provided on the left side of the rotating shaft 22A.

[0033] The output rotation transmitted to the rotating shaft 23A is transmitted to the left stalk base conveying chain 34a of the left stalk base conveying device 34A and the left ear tip conveying chain 35a of the left ear tip conveying device 35A via a gear 46 etc. provided in the middle of the rotating shaft 23A. Reference numeral 37 denotes a supply chain of a supply device that transfers the stalks conveyed to the rear of the conveying device 33 to the threshing device 4, and reference numeral 38 denotes an adjustment chain of an adjustment device that adjusts the position of the stalks conveyed by the conveying device 33.

[0034] The output rotation transmitted to the rotating shaft 23A is transmitted to the rotating shaft 24A mounted within the transmission cylinder 24 via a gear 47 provided at the front of the rotating shaft 23A and a gear box 48, etc.

[0035] The output rotation transmitted to the rotating shaft 24A is transmitted to the rotating shaft 81 via the gears 50 and 80 provided on the left side of the rotating shaft 24A, and the output rotation transmitted to the rotating shaft 81 is transmitted to the lifting device 31A via the gear 82.

[0036] The output rotation transmitted to the rotating shaft 24A is transmitted to the first rotating shaft 75A via the gear 51 and the gear 84 provided at the middle part of the rotating shaft 24A, the output rotation transmitted to the first rotating shaft 75A is transmitted to the second rotating shaft 77A via the first gear 75, the first counter gear 76, and the second gear 77U, and the output rotation transmitted to the second rotating shaft 77A is transmitted to the third rotating shaft 79A via the third gear 77D, the second counter gear 78, and the fourth gear 79. The gear 84 is provided at the top of the first rotating shaft 75A, and the first gear 75 is provided at the bottom of the first rotating shaft 75A. The second gear 77U is provided at the top of the second rotating shaft 77A, and the third gear 77D is provided at the bottom of the second rotating shaft 77A.

[0037] The output rotation transmitted to the third rotating shaft 79A is transmitted to the rotating shaft 87 via gears 85 and 86, and the output rotation transmitted to the rotating shaft 87 is transmitted to the raising device 31B via gear 88 provided on the left part of the rotating shaft 87, and is transmitted to the raising device 31C via gear 89 provided on the right part of the rotating shaft 87. The fourth gear 79 is provided on the upper part of the third rotating shaft 79A, and the gear 85 is provided on the lower part of the first rotating shaft 75A.

[0038] The output rotation transmitted to the rotating shaft 24A is transmitted to the rotating shaft 91 via the gear 52 and the gear 90 provided on the right side of the rotating shaft 24A, and the output rotation transmitted to the rotating shaft 91 is transmitted to the lifting device 31D via the gear 92.

[0039] This allows the output rotation of the engine E to be transmitted to the raising devices 31A to 31D, the cutting blade device 32, and the transport device 33.

[0040] <Support arm> 9, the first horizontal arm 71 is provided with a first gear 75, a first counter gear 76, and a second gear 77U. The first gear 75 is supported by a first rotating shaft 75A extending vertically at the right part of the first horizontal arm 71, the first counter gear 76 is supported by a first counter shaft 76A extending vertically at the middle part of the first horizontal arm 71, and the second gear 77U is supported by a second rotating shaft 77A extending vertically at the left part of the first horizontal arm 71. The second rotating shaft 77A is formed to extend from the upper side of the left part of the first horizontal arm 71 to the lower side of the left part of the second horizontal arm 73.

[0041] The first rotating shaft 75A is rotatably supported by the first horizontal arm 71, the first counter shaft 76A is rotatably supported by the first horizontal arm 71, and an upper portion of the second rotating shaft 77A is rotatably supported by the first horizontal arm 71.

[0042] The second horizontal arm 73 is provided with a third gear 77D, a second counter gear 78, and a fourth gear 79. The third gear 77D is supported by a second rotating shaft 77A extending in the vertical direction on the left side of the second horizontal arm 73, the second counter gear 78 is supported by a second counter shaft 78A extending in the vertical direction on the middle side of the second horizontal arm 73, and the fourth gear 79 is supported by a third rotating shaft 79A extending in the vertical direction on the right side of the second horizontal arm 73.

[0043] The lower part of the second rotating shaft 77A is rotatably supported by the second horizontal arm 73, the second counter shaft 78A is rotatably supported by the second horizontal arm 73, and the third rotating shaft 79A is rotatably supported by the second horizontal arm 73.

[0044] The pitch circles of the first gear 75 and the second gear 77U are formed to have the same diameter. This allows the rotation angle of the first gear 75 and the rotation angle of the second gear 77U to be the same angle. In addition, one first counter gear 76, which is an odd number, is provided between the first gear 75 and the second gear 77U. This allows the rotation direction of the first gear 75 and the rotation direction of the second gear 77U to be set in the same direction. Note that two or more first counter gears 76 can be provided between the first gear 75 and the second gear 77U, and when an even number of first counter gears 76 are provided, the rotation direction of the first gear 75 and the rotation direction of the second gear 77U can be set in the opposite direction.

[0045] The pitch circles of the third gear 77D and the fourth gear 79 are formed to have the same diameter. This allows the rotation angle of the third gear 77D and the rotation angle of the fourth gear 79 to be the same angle. In addition, one second counter gear 78, which is an odd number, is provided between the third gear 77D and the fourth gear 79. This allows the rotation direction of the third gear 77D and the rotation direction of the fourth gear 79 to be set to the same direction. Note that two or more second counter gears 78 can be provided between the third gear 77D and the fourth gear 79, and when an even number of second counter gears 78 are provided, the rotation direction of the third gear 77D and the rotation direction of the fourth gear 79 can be set to be opposite to each other.

[0046] In this embodiment, the pitch circles of the first gear 75, the first counter gear 76, the second gear 77U, the third gear 77D, the second counter gear 78, and the fourth gear 79 are formed to have the same diameter. This improves the interchangeability of the first gear 75, etc., and allows the first gear 75, etc. to be standardized.

[0047] 10 and 11, the front part of the first horizontal arm 71 and the rear part of the second horizontal arm 73 are rotatably connected via a resistor 65 that generates a predetermined resistance when rotating. This prevents the second horizontal arm 73 from rotating excessively relative to the first horizontal arm 71 against the operator's intention, allowing the operator to safely remove stalks stuck in the conveying device 33, etc. The resistor 65 is provided on the outer periphery of the second rotating shaft 77A.

[0048] In addition, the lower part of the first vertical arm 70 and the rear part of the first horizontal arm 71, and the front part of the first horizontal arm 71 and the upper part of the third vertical arm 74 can be connected by resistors 65 that generate a predetermined resistance when rotating. This prevents the first horizontal arm 71 from rotating excessively relative to the first vertical arm 70 and the third vertical arm 74 from rotating excessively relative to the second horizontal arm 73 against the intention of the worker, making it possible to more safely remove the stalks stuck in the conveying device 33, etc. The resistors 65 provided between the lower part of the first vertical arm 70 and the rear part of the first horizontal arm 71 are provided on the outer periphery of the first rotating shaft 75A, and the resistors 65 provided between the front part of the first horizontal arm 71 and the upper part of the third vertical arm 74 are provided on the outer periphery of the third rotating shaft 79A.

[0049] As shown in Fig. 12, the resistor 65 is formed of a cylindrical receiving cylinder 66 and a pushing cylinder 67. The inner periphery of the receiving cylinder 66 is fitted onto the first rotating shaft 75A, etc., and four grooves 66A are formed at predetermined radial positions on the surface of the receiving cylinder 66 facing the pushing cylinder 67, spaced 90 degrees apart in the circumferential direction. The outer periphery of the pushing cylinder 67 is fitted onto the right part of the first horizontal arm 71, etc., and a sliding member 67A such as a steel ball and a biasing means 67B such as a spring for biasing the sliding member 67A toward the receiving cylinder 66 are provided at predetermined radial positions on the surface of the pushing cylinder 67 facing the receiving cylinder 66.

[0050] The groove 60A can be formed in a hemispherical or V-shape, and the sliding member 67A can be formed in a spherical or elliptical shape. In addition, two sets of sliding members 67A and biasing means 67B spaced 180 degrees apart at predetermined radial positions, or four sets of sliding members 67A and biasing means 67B spaced 90 degrees apart at predetermined radial positions, can be provided on the opposing surfaces of the pushing cylinder 67.

[0051] When the first horizontal arm 71 etc. are rotated around the first rotation shaft 75A, the sliding member 67A of the pushing cylinder 67 moves circumferentially through a predetermined radial position on the opposing surface of the receiving cylinder 66, and then fits into the groove 66A of the receiving cylinder 66. This restricts the circumferential movement of the sliding member 67A of the pushing cylinder 67, preventing the first horizontal arm 71 etc. from rotating against the operator's will, and allowing the removal of stalks stuck in the conveying device 33 etc. to be performed more safely.

[0052] It is preferable to cover the surface of the receiving cylinder 66 facing the pushing cylinder 67 with an anti-slip material 68 such as cork, rubber, sponge, or resin. This prevents the first horizontal arm 71 and the second horizontal arm 73 from rotating excessively against the operator's intention, making it safer to remove the stalks stuck in the conveying device 33, etc.

[0053] As shown in Fig. 13, the first vertical arm 70 with the first rotating shaft 75A mounted therein is disposed offset to the right of the center in the left-right direction between the lifting device 31B and the lifting device 31C. As a result, when removing culms stuck at the joining position where the left conveying device 33A and the right conveying device 33B approach each other, where the culms raised by the lifting device 31A and the lifting device 31B and the culms raised by the lifting device 31C and the lifting device 31D join, the lifting device 31B and the lifting device 31C can be moved forward and to the right to form a larger working space in front of the conveying device 33, etc., and the culms can be removed more easily.

[0054] Openings for passing through the fixing pins 95 are provided in the front of the transmission tube 24, the front of the base of the first horizontal arm 71 of the support arm 61, and the front of the tip of the second horizontal arm 73. As a result, when the support arm 61 is in the stored position (harvesting position), the first horizontal arm 71 and the second horizontal arm 73 of the support arm 61 are fixed to the transmission tube 24, and it is possible to prevent the first horizontal arm 71 and the second horizontal arm 73 from rotating and taking the support arm 61 into the open position.

[0055] In addition, as shown in Figures 40 to 42, instead of the fixing pin 95, a fixing mechanism A may be provided that fixes the support arm 61 to the transmission tube 24 in the storage position (harvesting position) to restrict the movement of the lifting device 31B and the lifting device 31C.

[0056] That is, a first cylinder 71a and a second cylinder 73a are fixed to the tip ends of the first horizontal arm 71 and the second horizontal arm 73 of the support arm 61, respectively, and the lower part of a first round pipe 71b serving as an insertion member is fitted and fixed into the first cylinder 71a, and the upper part of a second round pipe 73b serving as an insertion member is fitted and fixed into the second cylinder 73a.

[0057] A fixing bracket 24b having an insertion hole 24a at a position coaxial with the first round pipe 71b inserted into the first cylinder 71a and the second round pipe 73b inserted into the second cylinder 73a when the support arm 61 is in the stored position is fixed to the underside of the transmission cylinder 24 that constitutes the cutting frame 20.

[0058] Then, a round bar 300 serving as a fixed body is inserted from below into the first round pipe 71b fitted into the first cylinder 71a and the second round pipe 73b fitted into the second cylinder 73a, a first insertion hole 300a is provided in the upper part of the round bar 300, a first pin 301a is inserted into the first insertion hole 300a in the upper part of the round bar 300 which has passed through the insertion hole 24a of the fixing bracket 24b, and is secured against coming out with a snap pin, and a second insertion hole 300b is provided in the round bar 300 at the position where the first round pipe 71b has been inserted, and the second pin 301b is inserted into the first insertion hole 300a and secured against coming out with a snap pin.

[0059] Therefore, when the support arm 61 is in the stored position (harvesting position), a round bar 300 is inserted from below into the first round pipe 71b inserted into the first cylinder 71a and the second round pipe 73b inserted into the second cylinder 73a provided at the tip of the first horizontal arm 71 and the second horizontal arm 73 of the support arm 61, respectively, and the upper part of the round bar 300 is inserted into the insertion hole 24a of the fixing bracket 24b provided on the transmission tube 24, which is a component of the harvesting frame 20, so that the round bar 300 is prevented from coming out by the first pin 301a and the second pin 301b, and the support arm 61 is fixed to the transmission tube 24, which is a component of the harvesting frame 20, thereby appropriately restricting the movement of the lifting device 31B and the lifting device 31C.

[0060] The round bar 300 inserted into the first round pipe 71b and the second round pipe 73b may be a solid round bar or a hollow round bar (round pipe).

[0061] In addition, the first cylinder 71a and the second cylinder 73a may be a first square tube 71a and a second square tube 73a, and the members that fit into them may be a first square pipe 71b and a second square pipe 73b instead of the first round pipe 71b and the second round pipe 73b, and a round bar 300 may be inserted into the first square pipe 71b and the second square pipe 73b, or a square bar 300 may be inserted into the first square pipe 71b and the second square pipe 73b instead of the round bar 300.

[0062] That is, each member may have any shape.

[0063] Further, the first pin 301a and the second pin 301b are used to prevent the round bar 300 from coming off, but the round bar 300 may be prevented from coming off by a snap pin.

[0064] Additionally, the second pin 301b may be omitted.

[0065] <Oscillating parts> 14, there is provided a front-rear frame 26 that is formed from a left-right middle portion of the transmission cylinder 22 toward the front side. A pair of left and right substantially rectangular fixing plates 27 are provided facing upward from the front side portion of the front-rear frame 26.

[0066] A swinging part 28 is rotatably supported on the front part of the fixed plate 27. The swinging part 28 is formed of a rectangular rotating plate 28A provided between the pair of left and right fixed plates 27, an extending part 28B extending from the top of the rotating plate 28A toward the rear and upward, and a connecting part 28C extending in the left-right direction from the rear part of the extending part 28B. In addition, a left part of the connecting part 28C is connected to a lower part of the rear surface of the lifting device 31B, and a right part of the connecting part 28C is connected to a lower part of the rear surface of the lifting device 31C.

[0067] A pin 29 is inserted through an opening 27a formed in the front lower part of the fixed plate 27 and an opening 28a formed in the front lower part of the rotating plate 28A, and a fixing means such as a bolt is inserted through a screw portion 27b formed in the rear part of the fixed plate 27 and an opening 28b formed in the rear part of the rotating plate 28A. As a result, as shown in Figures 15 and 16, when moving the upper parts of the lifting device 31B and the lifting device 31C forward, the fixing means is removed and the swinging part 28 is rotated counterclockwise about the pin 29, so that the upper parts of the lifting device 31B and the lifting device 31C can be pulled forward to increase the working space in front of the conveying device 33.

[0068] The pin 29 may be a straight pin, a stepped pin, an L-shaped pin with a bent portion formed on one side of the straight pin, or the like. When a straight pin is used, it is preferable to form through holes at both ends of the straight pin and insert a snap pin or a split pin therethrough. When a stepped pin is used, it is preferable to form a counterbore on the side of the fixed plate 27 into which the stepped portion of the stepped pin enters, and to form a through hole on the other side where the stepped portion of the stepped pin is not formed, and to insert a snap pin or a split pin therethrough. When an L-shaped pin is used, it is preferable to provide an engagement portion (not shown) on the side of the fixed plate 27 with which the bent portion of the L-shaped pin engages, and to form a through hole on the other side where the bent portion of the L-shaped pin is not formed, and to insert a snap pin or a split pin therethrough. This makes it possible to prevent the pin 29 from falling off the openings of the fixed plate 27 and the rotating plate 28A.

[0069] 17(a) and (b), protrusions 29a protruding in the radial direction can be formed at both ends of the pin 29. When using this pin 29, a groove 28c extending in the radial direction into which the protrusion 29a is inserted is formed in the opening 28a of the rotating plate 28A as shown in Figs. 17(c) and (d), and a groove 27c extending in the radial direction into which the protrusion 29a is inserted is formed in the opening 27a of the fixed plate 27 as shown in Figs. 17(e) and (f). This makes it possible to easily fix the pin 29 by rotating the pin 29 around the axis after the pin 29 is inserted through the opening 27a of the fixed plate 27 and the opening 28a of the rotating plate 28A.

[0070] <First form connection parts> 18 to 20 show a first form of connecting part 93. A first rib 71A extending from the front side of the first vertical arm 70 to the front side of the second vertical arm 72 is provided on the upper part of the first horizontal arm 71, and a second rib 73A extending from the front side of the second vertical arm 72 to the front side of the third vertical arm 74 is provided on the upper part of the second horizontal arm 73.

[0071] A recess 93A is formed in the lower part of the connecting part 93 in the first form, and an opening 93B is formed in the upper part. The upper part of the connecting part 93 is rotatably supported via a pin 94 extending in the left-right direction in front of the first rib 71A. As a result, as shown in Fig. 27, when the lifting device 31B and the lifting device 31C are moved forward, the recess 93A of the connecting part 93 is engaged with the second rib 73A to restrict the second horizontal arm 73 from rotating around the second vertical arm 72, preventing contact between the worker and the second horizontal arm 73, and allowing the stalk stuck in the conveying device 33, etc. to be safely removed.

[0072] The pin 94 may be a straight pin, a stepped pin, or the like. When a straight pin is used, it is preferable to form openings at both ends of the straight pin and insert a snap pin or a split pin therethrough. When a stepped pin is used, it is preferable to form an opening on the other side of the stepped pin where the step is not formed and insert a snap pin or a split pin therethrough. This makes it possible to prevent the pin 94 from falling off from the front of the first rib 71A. Also, a fastening means such as a bolt may be used instead of the pin. Also, a fastening part such as a bolt may be used instead of the pin 94.

[0073] Furthermore, although the connecting part 93 is formed as an integral part, it may also be formed by dividing it into a left connecting part and a right connecting part, which are then connected together by a fastening part such as a bolt.

[0074] <Removing grain stalks stuck in the conveyor> When the stalks are stuck in the transport device 33 located behind the lifting device 31B and the lifting device 31C, after stopping the engine E, the lifting device 31B and the lifting device 31C are manually moved forward to an open position as shown in Figs. 21 to 23. This creates a large working space in front of the transport device 33, etc., making it easier to remove the stalks. In addition, as shown in Fig. 16, it is preferable to rotate the swinging part 28 to pull out the upper parts of the lifting device 31B and the lifting device 31C forward. This creates a large working space in front of the transport device 33, etc., making it easier to remove the stalks.

[0075] As shown in FIG. 24, when the lifting device 31B and the lifting device 31C are manually moved forward, the first horizontal arm 71 rotates 90 degrees clockwise around the first vertical arm 70 as viewed from the axis of the first vertical arm 70, and the second horizontal arm 73 rotates 90 degrees counterclockwise around the second vertical arm 72 as viewed from the axis of the second vertical arm 72, so that the longitudinal direction of the first horizontal arm 71 and the longitudinal direction of the second horizontal arm 73 extend along the front-rear direction. This prevents the lugs for transporting the culms of the lifting device 31B and the lifting device 31C from moving up and down, and when the lifting device 31B and the lifting device 31C are moved backward to the storage position, the position of the lugs can also be moved to the position before the movement. In addition, after removing the clogged culms, the lifting device 31B and the lifting device 31C can be quickly re-driven by putting them into the storage position. 18, etc., it is preferable to engage the recess 93A of the connecting part 93 with the second rib 73A of the second horizontal arm 73. This restricts the rotation of the second horizontal arm 73 and prevents the second horizontal arm 73 from contacting the worker, making it possible to more safely remove the stalks stuck in the conveying device 33, etc.

[0076] When the transport device 33 located to the rear right of the lifting device 31B and the lifting device 31C is clogged with stalks, after stopping the engine E, the lifting device 31B and the lifting device 31C are manually moved forward and leftward to an open position as shown in Figs. 25 to 27. By moving the lifting device 31B and the lifting device 31C forward and leftward, a large working space is formed in front of the transport device 33, and the stalks can be easily removed.

[0077] As shown in FIG. 28, when the lifting device 31B and the lifting device 31C are manually moved forward to the left, the first horizontal arm 71 rotates 60 degrees clockwise around the first vertical arm 70 as viewed from the axis of the first vertical arm 70, and the second horizontal arm 73 rotates 120 degrees counterclockwise around the second vertical arm 72 as viewed from the axis of the second vertical arm 72, and the longitudinal direction of the first horizontal arm 71 and the longitudinal direction of the second horizontal arm 73 extend along a virtual line L1 that intersects with the front-rear direction at an intersection angle of 30 degrees. This makes it possible to suppress the movement of the lugs that transport the stalks of the lifting device 31B and the lifting device 31C in the vertical direction, and when the lifting device 31B and the lifting device 31C are moved backward to the storage position, the position of the lugs can also be moved to the position before the movement. In addition, after removing the clogged stalks, the lifting device 31B and the lifting device 31C can be quickly re-driven by putting them into the storage position. 18, etc., it is preferable to engage the recess 93A of the connecting part 93 with the second rib 73A of the second horizontal arm 73. This restricts the rotation of the second horizontal arm 73 and prevents the second horizontal arm 73 from contacting the worker, making it possible to more safely remove the stalks stuck in the conveying device 33, etc.

[0078] When the transport device 33 located on the rear left side of the lifting device 31B and the lifting device 31C is clogged with stalks, after stopping the engine E, the lifting device 31B and the lifting device 31C are manually moved forward and to the right to open the device as shown in Figs. 29 to 31. By moving the lifting device 31B and the lifting device 31C forward and to the right, a large working space is created in front of the transport device 33, and the stalks can be easily removed.

[0079] As shown in FIG. 32, when the lifting device 31B and the lifting device 31C are manually moved forward to the right, the first horizontal arm 71 rotates 120 degrees clockwise around the first vertical arm 70 as viewed from the axis of the first vertical arm 70, and the second horizontal arm 73 rotates 60 degrees counterclockwise around the second vertical arm 72 as viewed from the axis of the second vertical arm 72, and the longitudinal direction of the first horizontal arm 71 and the longitudinal direction of the second horizontal arm 73 extend along a virtual line L2 that intersects with the front-rear direction at an intersection angle of 30 degrees. This makes it possible to suppress the movement of the lugs that transport the stalks of the lifting device 31B and the lifting device 31C in the vertical direction, and when the lifting device 31B and the lifting device 31C are moved backward to the storage position, the position of the lugs can also be moved to the position before the movement. In addition, after removing the clogged stalks, the lifting device 31B and the lifting device 31C can be quickly re-driven by putting them into the storage position. 18, etc., it is preferable to engage the recess 93A of the connecting part 93 with the second rib 73A of the second horizontal arm 73. This restricts the rotation of the second horizontal arm 73 and prevents the second horizontal arm 73 from contacting the worker, making it possible to more safely remove the stalks stuck in the conveying device 33, etc.

[0080] <Left stock transport device> As shown in Figs. 33 and 34, the left stock base conveying device 34A is provided with a sprocket 100 around which the left stock base conveying chain 34a is wound, a star wheel 101 that rakes in the stock base of the culm to which the output rotation of the sprocket 100 is transmitted, and a pulley 102 that winds a lugged belt. In addition, the rear part of a front frame 104 extending forward and the front part of a rear frame 105 extending backward are fixed to a cylindrical body 103 that has a rotating shaft that connects the sprocket 100 and the star wheel 101 inside. This allows the cylindrical body 103 to be firmly supported on the machine frame 1 via the front frame 104 and the rear frame 105. The front part of the front frame 104 is fixed to a frame (not shown) that is erected on the machine frame 1, and the rear part of the rear frame 105 is fixed to the left part of the transmission tube 22. In addition, a protective cover 106 is provided on the upper side of the pulley 102.

[0081] <Tension adjustment mechanism> As shown in Figures 35 and 36, the lugged chain 110 that raises the stalks is wound around a first sprocket 111 provided on the upper part of the raising device 31B, a tension sprocket 112 provided to the right of the first sprocket 111, and a second sprocket 113 provided on the lower part of the raising device 31B.

[0082] The first sprocket 111 is supported by a rotating shaft 111A, and a front part of the rotating shaft 111A is rotatably supported by a front cover 116 of the raising device 31B, and a rear part of the rotating shaft 111A is rotatably supported by a rear cover 117 of the raising device 31B via a support member 114. The output rotation of a rotating shaft 87 mounted within the third vertical arm 74 is transmitted to the rotating shaft 111A via a gear 88, etc.

[0083] The tension sprocket 112 is supported on the front part of a rotating shaft 112A, and the rear part of the rotating shaft 112A is rotatably supported on the right part of a tension arm 115 that is rotatably supported on a support member 114. In addition, the second sprocket 113 is supported on a rotating shaft 113A, and the front part of the rotating shaft 113A is rotatably supported on a front cover 116 of the raising device 31B, and the rear part of the rotating shaft 113A is rotatably supported on a rear cover 117 of the raising device 31B.

[0084] As a result, when viewed from the axis of the rotating shaft 111A, the chain 110 can be rotated counterclockwise, the fallen culms can be lifted by the lifting device 31A and the lifting device 31B, and the base of the culms can be efficiently cut by the left cutting blade device 32A.

[0085] The lugged chain 210 that raises the stalks is wound around a first sprocket 211 provided on the upper part of the raising device 31C, a tension sprocket 212 provided to the left of the first sprocket 211, and a second sprocket 213 provided on the lower part of the raising device 31B.

[0086] The first sprocket 211 is supported by a rotating shaft 211A, the front part of which is rotatably supported by a front cover 216 of the raising device 31C, and the rear part of which is rotatably supported by a rear cover 217 of the raising device 31C via a support member 214. The output rotation of a rotating shaft 87 mounted within the third vertical arm 74 is transmitted to the rotating shaft 211A via a gear 89, etc.

[0087] The tension sprocket 212 is supported on the front part of a rotating shaft 212A, and the rear part of the rotating shaft 212A is rotatably supported on the right part of a tension arm 215 that is rotatably supported on the support member 114. In addition, the second sprocket 213 is supported by a rotating shaft 213A, and the front part of the rotating shaft 213A is rotatably supported on a front cover 216 of the raising device 31C, and the rear part of the rotating shaft 213A is rotatably supported on a rear cover 217 of the raising device 31C.

[0088] As a result, when viewed from the axis of the rotating shaft 211A, the chain 210 can be rotated clockwise, the fallen culms can be lifted by the lifting devices 31C and 31D, and the base of the culms can be efficiently cut by the right cutting blade device 32B.

[0089] 40 to 42, the lower part of a rectangular vertical member 120 extending in the vertical direction is attached to the outer periphery of the left opening of the third vertical arm 74, and the lower part of a rectangular vertical member 220 extending in the vertical direction is attached to the outer periphery of the right opening of the third vertical arm 74. In addition, the upper parts of the vertical member 120 and the vertical member 220 are connected by a rectangular horizontal member 121 extending in the left-right direction.

[0090] A tension rod 122 extending in the vertical direction is provided at a portion of the cross member 121 facing the left portion of the tension arm 115, and the lower portion of the tension rod 122 is connected to the left portion of the tension arm 115 via a biasing part 123 such as a spring. The tension rod 122 is also provided with an adjustment means 124 such as a bolt for adjusting the length of the rod that extends downward beyond the cross member 121. This makes it possible to adjust the tension that biases the left portion of the tension arm 115 upward via the biasing part 123, thereby preventing the chain 110 wound around the first sprocket 111, etc. from falling off.

[0091] A tension rod 222 extending in the vertical direction is provided at a portion of the cross member 121 facing the right portion of the tension arm 215, and the lower portion of the tension rod 222 and the right portion of the tension arm 215 are connected via a biasing part 223 such as a spring. The tension rod 222 is also provided with an adjustment means 224 such as a bolt for adjusting the length of the rod that extends below the cross member 121. This makes it possible to adjust the tension that biases the right portion of the tension arm 215 upward via the biasing part 223, thereby preventing the chain 210 wound around the first sprocket 211, etc. from falling off.

[0092] In the form shown in Figures 37-38, the upper parts of vertical member 120 and vertical member 220 are connected by horizontal member 121, but it is also possible to provide a left plate extending toward the right side at the upper part of vertical member 120, a right plate extending toward the left side at the upper part of vertical member 220, a tension rod 122 at the right part of the left plate, and a tension rod 222 at the left part of the right plate.

[0093] <Other embodiments> 43 and 44 show a front view and a side view of a five-row harvesting device 3 according to another embodiment, in which the lifting device 31 is driven by an electric motor 400.

[0094] That is, the five raising devices 31A, 31B, 31C, 31D, and 31E of the raising device 31 are driven by electric motors 400A, 400B, 400C, 400D, and 400E provided on the upper rear surface of each device.

[0095] Therefore, the drive system of the raising device 31 only requires wiring to the electric motors 400A, 400B, 400C, 400D, and 400E, and the drive system of the raising device 31 is simplified, making it possible to reduce the weight and the number of parts.

[0096] The electric motors 400A, 400B, 400C, 400D, and 400E are respectively arranged at the center of the inside of the winding of the lugged chain that raises the stalks above the raising device 31A, the raising device 31B, the raising device 31C, the raising device 31D, and the raising device 31E.

[0097] In addition, a camera is installed on the vehicle body to photograph the uncut stalks in front of the vehicle body, and when the camera detects that the uncut stalks have fallen, the driving rotation of the electric motor (400A, 400B, 400C, 400D or 400E) of the lifting device (31A, 31B, 31C, 31D or 31E) that lifts the fallen uncut stalks is increased to improve the lifting performance of the fallen stalks.

[0098] Therefore, the lifting speed of the lifting device (31A, 31B, 31C, 31D or 31E) can be adjusted to match the lying state of the harvested stalks, and the transport posture can be stabilized, allowing for good harvesting work.

[0099] In addition, the lifting devices 31A and 31B, and the lifting devices 31D and 31E, which have lifting lugs facing each other to lift the stalks, have electric motors 400A, 400B, 400D, and 400E which rotate at a faster speed than the electric motor 400C of the lifting device C, which lifts the stalks with a single lifting lug.

[0100] Therefore, the transfer of each raising lug can be prevented from being out of alignment, and damage to the raising lugs can be prevented. [Explanation of symbols]

[0101] 1 Aircraft frame 3 Reaping device 4. Threshing Equipment 20 Reaping Frame 24 Transmission case (transmission tube) 24a Insertion hole 24b Fixing bracket 31A Lifting device 31B Raising device 31C lifting device 31D lifting device 32 Cutting blade device 33 Transport equipment 61 Support Arm 71 First horizontal arm 71b Insertion member (first round pipe) 73 Second horizontal arm 73b Insertion member (second round pipe) 300 Fixed body (round bar) A Fixing mechanism E-Engine

Claims

1. A combine harvester is provided with a harvesting device (3) at the front of a machine frame (1) on which an engine (E) is mounted, a thresher (4) at the rear of the harvesting device (3), and the harvesting device (3) is composed of a plurality of lifting devices (31A, 31B, 31C, 31D) for lifting up culms in a field, a cutting blade device (32) for cutting the base of the culms, and a transport device (33) for transporting the harvested culms toward the thresher (4). Any of the plurality of lifting devices (31A, 31B, 31C, 31D) is connected to the tip of a rotatable support arm (61) whose base is pivotally supported on the harvesting frame (20) so as to be movable between a harvesting position and an open position moved to the front of the vehicle body, and a fixing mechanism (A) for fixing the device in the harvesting position is provided on the support arm (61). Among the plurality of lifting devices (31A, 31B, 31C, 31D), the lifting devices (31B, 31C) at the left and right centers are connected to the tip of a support arm (61) so as to be movable between a harvesting posture and an open posture moved forward of the vehicle body, A combine harvester characterized in that the fixing mechanism (A) is configured to insert a fixing body (300) into an insertion member (71b, 73b) provided at the tip of a support arm (61), and to insert the fixing body (300) into an insertion hole (24a) of a fixing bracket (24b) provided on a harvesting frame (20) to fix the fixing body (300).

2. The combine harvester according to claim 1, characterized in that a fixing bracket (24b) is provided on a transmission case (24), which is a component of the harvesting frame (20) arranged along the upper part of the multiple lifting devices (31A, 31B, 31C, 31D).

3. The combine harvester according to claim 1, characterized in that an insertion member (71b, 73b) is provided at the tip of the upper and lower first horizontal arms (71) and second horizontal arms (73) that constitute a support arm (61) whose base is pivotally supported.

Images