Harvesting Machine

Abstract

To provide a harvesting work machine that properly drives and rotates a feed chain drive mechanism to solve such the problem with a combine harvester provided with a threshing part transport device for supplying culm to a thresher with a feed chain that the feed chain is driven and rotated with a drive sprocket installed on a machine body backward side and chain skip or come off occurs due to the load when an amount of transported culm increases, and, as a result, the operation may be interrupted.SOLUTION: In a harvesting work machine, a chain rail main frame 91 for supporting a chain rail 92a for guiding a feed chain 96 is disposed in a front part of a feed chain drive mechanism 9, a front part of the chain rail main frame 91 is fixed to a machine body to configure a rear part to take a posterosuperior inclined posture, the chain rail 92a is fixed to a rear end part 91R of the chain rail main frame 91, and the chain rail main frame 91 is disposed downward of a drive sprocket 94 of the feed chain 96.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a harvesting machine equipped with a threshing section transport device that supplies grain stalks harvested by a reaping device to a threshing device. [Background technology]

[0002] Conventionally, there is a combine harvester provided with a threshing section conveying device that supplies grain stalks to a threshing device via a feed chain (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-068556 A Summary of the Invention [Problem to be solved by the invention]

[0004] The feed chain was rotated by a drive sprocket mounted on the rear side of the machine body, so when the amount of grain straw being transported increased, the load could cause the chain to jump or fall off, and work could be interrupted.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a harvesting machine in which a feed chain drive mechanism is properly driven and rotated. [Means for solving the problem]

[0006] The first aspect of the present invention is In a harvesting machine equipped with a feed chain drive mechanism (9) for transporting stalks harvested by a harvesting device (5) to a threshing device (10), a chain rail main frame (91) for supporting a chain rail (92a) for guiding a feed chain (96) is disposed in front of the feed chain drive mechanism (9), the front part of the chain rail main frame (91) is fixed to a machine body, and the rear part is configured in a rear-upward inclined position, the chain rail (92a) is fixed to a rear end part (91R) of the chain rail main frame (91), and the chain rail main frame (91) is disposed below a drive sprocket (94) of the feed chain (96), This harvesting machine is characterized in that a base of a drive sprocket stay (98) supporting a drive sprocket (94) is fixed to the rear of a chain rail main frame (91), a belt cover stay (15) is provided below the portion of the chain rail main frame (91) bent diagonally upward toward the rear, and the belt cover stay (15) is provided below the drive sprocket stay (98), and a base of a chain cover stay (17) that engages a chain cover (13) covering the left outside of a feed chain (96) is fixed to a midway portion extended diagonally upward toward the rear of the chain rail main frame (91), a pulley (99) that transmits driving force to the threshing device (10) by a belt is provided below the drive sprocket (94), and the base sides of the drive sprocket stay (98) and the chain cover stay (17) are provided in positions overlapping the outer sides of the pulley (99). According to the first aspect of the present invention, the driving sprocket stay 98 blocks straw chips and the like falling from above, preventing the straw chips and the like from getting caught and accumulating on the belt cover stay 15, improving maintainability. The second aspect of the present invention is In a harvesting machine equipped with a feed chain drive mechanism (9) for transporting stalks harvested by a harvesting device (5) to a threshing device (10), a chain rail main frame (91) for supporting a chain rail (92a) for guiding a feed chain (96) is disposed in front of the feed chain drive mechanism (9), the front part of the chain rail main frame (91) is fixed to a machine body, and the rear part is configured in a rear-upward inclined position, the chain rail (92a) is fixed to a rear end part (91R) of the chain rail main frame (91), and the chain rail main frame (91) is disposed below a drive sprocket (94) of the feed chain (96), This harvesting machine is characterized in that a driven sprocket (95) for changing the direction of the feed chain (96) is provided in front of the chain rail (92a), a tension roller (90) is provided behind the driven sprocket (95), and the driven sprocket (95), tension roller (90), drive sprocket (94) and chain rail (92a) are arranged in a straight line or approximately in a straight line. According to the second aspect of the present invention, the vertical movement of the feed chain 96 is reduced, sliding resistance is suppressed, and the load is reduced, thereby preventing a decrease in work efficiency and interruption of work due to the feed chain 96 falling off. The first invention related to the present inventionis a harvesting machine equipped with a feed chain drive mechanism 9 that transports the stalks harvested by the harvesting device 5 to a threshing device 10, in which a chain rail main frame 91 supporting a chain rail 92a that guides the feed chain 96 is disposed at the front of the feed chain drive mechanism 9, the front of the chain rail main frame 91 is fixed to the body of the machine and the rear is configured in a rear-upward inclined position, the chain rail 92a is fixed to the rear end portion 91R of the chain rail main frame 91, and the chain rail main frame 91 is disposed below the drive sprocket 94 of the feed chain 96.

[0007] The first invention related to the present invention According to this, a chain rail main frame 91 that supports a chain rail 92a that guides a feed chain 96 is disposed at the front of the feed chain drive mechanism 9, the front of the chain rail main frame 91 is fixed to the body and the rear is configured with a rear-upward inclined posture, the chain rail 92a is fixed to the rear end 91R of the chain rail main frame 91, and the chain rail main frame 91 is disposed below the drive sprocket 94 of the feed chain 96.Since the chain rail main frame 91 is positioned below the drive sprocket 94 which is easily subjected to load, its strength is improved and the feed chain drive mechanism 9 is driven to rotate properly.

[0008] The second invention related to the present invention The base of the drive sprocket stay 98 supporting the drive sprocket 94 is fixed to the rear of the chain rail main frame 91, a belt cover stay 15 is provided under the part of the chain rail main frame 91 bent diagonally upward toward the rear, and the belt cover stay 15 is provided below the drive sprocket stay 98. The base of the chain cover stay 17 for engaging the chain cover 13 covering the left outer side of the feed chain 96 is fixed to the middle part of the chain rail main frame 91 extended diagonally upward toward the rear. A pulley 99 for transmitting the drive force to the threshing device 10 by a belt is provided below the drive sprocket 94, and the base sides of the drive sprocket stay 98 and the chain cover stay 17 are provided in a position overlapping the outer side of the pulley 99. The first invention related to the present invention It is a harvesting machine.

[0009] The second invention related to the present invention According to the invention, the base of the drive sprocket stay 98 that supports the drive sprocket 94 is fixed to the rear of the chain rail main frame 91, the belt cover stay 15 is provided below the part of the chain rail main frame 91 that is bent diagonally upward toward the rear, and the belt cover stay 15 is provided below the drive sprocket stay 98.As a result, the drive sprocket stay 98 blocks straw chips and the like falling from above, preventing the straw chips and the like from getting caught and accumulating on the belt cover stay 15, improving maintainability.

[0010] In addition, the base of the chain cover stay 17, which engages the chain cover 13 covering the left outer side of the feed chain 96, is fixed to the midway portion extended diagonally upward toward the rear of the chain rail main frame 91, and a pulley 99 which transmits driving force to the threshing device 10 by belt is provided below the drive sprocket 94. The base sides of the drive sprocket stay 98 and the chain cover stay 17 are positioned so as to overlap the outer side of the pulley 99. Therefore, the drive sprocket stay 98 and the chain cover stay 17 also function as a safety guard for the pulley 99. For example, when installing the chain cover 13, the drive sprocket stay 98 and the chain cover stay 17 are configured so that they come into contact with the operator's hands first, ensuring safety during work.

[0011] The third invention related to the present invention In the present embodiment, a driven sprocket 95 for changing the direction of a feed chain 96 is provided in front of a chain rail 92a, a tension roller 90 is provided behind the driven sprocket 95, and the driven sprocket 95, tension roller 90, driving sprocket 94 and chain rail 92a are arranged in a straight line or approximately in a straight line. The first or second invention related to the present invention It is a harvesting machine.

[0012] The third invention related to the present inventionAccording to this, a driven sprocket 95 that changes the direction of the feed chain 96 is provided in front of the chain rail 92a, a tension roller 90 is provided behind the driven sprocket 95, and the driven sprocket 95, tension roller 90, drive sprocket 94 and chain rail 92a are arranged in a straight line or approximately in a straight line, thereby reducing the up and down movement of the feed chain 96, suppressing sliding resistance and reducing the load, and preventing a decrease in work efficiency and work interruptions due to the feed chain 96 falling off.

[0013] The fourth invention related to the present invention The operating surface of the chain rail 92a is located above the line connecting the centers of the driven sprocket 95 and the driving sprocket 94. The third invention related to the present invention It is a harvesting machine.

[0014] The fourth invention related to the present invention According to this, the active surface of the chain rail 92a is located above the line connecting the centers of the driven sprocket 95 and the driving sprocket 94, so that the driving sprocket 94 properly engages with the feed chain 96 to properly drive and rotate the feed chain 96, preventing errors in transporting the straw due to slackness in the feed chain 96, or work interruptions due to the feed chain 96 falling off.

[0015] In addition, even if the feed chain 96 begins to stretch due to deterioration over time, the chain rail 92a can apply tension to it, allowing normal tension to be applied, preventing work interruptions due to incorrect transport of the stalks or the feed chain 96 falling off.

[0016] Fifth Invention Related to the Present Invention The drive shaft 94a is provided with a holder 37 for supporting the intermediate portion of the drive shaft 94a that drives and rotates the drive sprocket 94. The first or second invention related to the present invention It is a harvesting machine.

[0017] Fifth Invention Related to the Present Invention According to this, since the holder 37 is provided to support the intermediate portion of the drive shaft 94a that drives and rotates the drive sprocket 94, distortion of the drive shaft 94a can be suppressed, and damage to the transmission mechanism and the like can be prevented. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a side view of a combine harvester according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 4 is a side view of the front part of the feed chain drive mechanism. [Figure 4] FIG. 4 is a side view of the drive portion of the drive sprocket. [Diagram 5] FIG. 4 is a rear cross-sectional view of the drive portion of the drive sprocket. [Figure 6] FIG. 4 is a perspective view of a fastener for the radiator cover. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, a combine harvester as one embodiment of a harvesting machine of the present invention will be described in detail with reference to the drawings.

[0020] For ease of understanding, the following description will refer to the front as the front side, the rear as the rear side, the right hand side as the right side, and the left hand side as the left side, as viewed from the pilot's perspective; however, the present invention is not limited to these terms.

[0021] As shown in Figures 1 and 2, the combine harvester 1 includes a body frame 2, an engine 3 as a driving power source, a traveling device 4, a harvesting device 5, a threshing device 10 equipped with a feed chain drive mechanism 9, and a grain tank 8.

[0022] The vehicle frame 2 forms a frame-shaped structural member of the vehicle body of the combine harvester 1.

[0023] The engine 3 is mounted on the aircraft frame 2 at the front side in the longitudinal direction, below a control section 22 which has an operator's seat 21 mounted thereon.

[0024] The traveling device 4 is provided vertically below the machine body frame 2. The traveling device 4 moves the entire combine harvester 1 by driving force from the engine 3. The traveling device 4 has crawlers 41. A pair of crawlers 41 are provided on the left and right sides vertically below the machine body frame 2 with a gap in the vehicle width direction. The traveling device 4 moves the entire combine harvester 1 forward in the fore-and-aft direction by driving the crawlers 41 by the driving force transmitted from the engine 3.

[0025] The harvesting device 5 is mounted at the front of the body frame 2 and is equipped with a dividing body 51 that divides the culms growing in the field, a lifting device 52 that raises the culms, a cutting blade 53 that cuts the lower part of the culms, a transport device 56 that transports the harvested culms, and a suspension base 59. It is driven by the driving force from the engine 3 to harvest the culms and transport the harvested culms to the threshing device 10.

[0026] The conveying device 56 is equipped with a base of the stalk conveying device 56a and a tip of the stalk conveying device 56b, and conveys the stalks from the harvesting device 5 to the threshing device 10, and then hands them over to the feed chain drive mechanism 9.

[0027] The suspension base 59 is provided at the rear end of the harvesting device 5 and in front of the threshing device 10. The suspension base 59 includes a pair of left and right standing frames 59a on the left and right in the vehicle width direction standing upright from the machine frame 2, and a connecting frame connecting the left and right standing frames 59a to each other.

[0028] The threshing device 10 is provided behind the reaping device 5 and to the side of the grain tank 8 (on the left side of the machine frame 2), and has an upper threshing section and a lower sorting section.

[0029] The threshing and sorting sections are located above the machine frame 2 and behind the conveying device 56 of the reaping device 5.

[0030] The threshing unit threshes the culms transported by the driving force from the engine 3. That is, the threshing unit is a device that separates grains from the culms harvested by the harvesting device 5.

[0031] The threshing device 10 is covered on the left outer side by front and rear belt covers 11, 12, a chain cover 13 and a cutter cover 14.

[0032] The sorting section is a device that separates impurities such as straw from the culm threshed by the threshing section from the grains using the driving force from the engine 3.

[0033] The grain tank 8 is provided to the side of the threshing device 10 and stores the grains collected by the sorting section of the threshing device 10.

[0034] A discharge auger 81 is connected to the grain tank 8. The discharge auger 81 transports grains in the grain tank 8 by the driving force from the engine 3 and discharges them to the outside of the grain tank 8.

[0035] The feed chain drive mechanism 9 rotates and drives the feed chain 96 to take over the stalks harvested by the harvesting device 5 and transport them by the transport device 56 of the harvesting device 5 to the threshing section of the threshing device 10.

[0036] The feed chain drive mechanism 9 is arranged on the side opposite to the side on which the grain tank 8 of the threshing device 10 is arranged, i.e., on the left side.

[0037] Here, the detailed configuration of the feed chain drive mechanism 9 will be described with reference to FIGS.

[0038] The feed chain drive mechanism 9 comprises a feed chain 96, a chain rail main frame 91, a lower central chain rail 92a, a lower front chain rail 92b, and an upper chain rail 93 which guide and support the feed chain 96, a drive sprocket 94, a number of driven sprockets 95, a tension roller 90, a clamping rod 18, etc.

[0039] The lower front chain rail 92b is integrally formed with the lower part of the front end portion of the upper chain rail 93.

[0040] The upper chain rail 93 is the working rail that guides the feed chain 96 that transports the grain stalk, and the lower central chain rail 92a and the lower front chain rail 92b are non-working rails. The feed chain 96 is guided by the upper surface of the upper chain rail 93 to move rearward to transport the grain stalk, and then rotates along a trajectory that leads to the front end of the upper chain rail 93, guided by the upper surface of the lower central chain rail 92a and the lower surface of the lower front chain rail 92b.

[0041] The feed chain 96 is wound around a drive sprocket 94, a plurality of driven sprockets 95 (at the front and rear ends), and a tension roller 90, and is driven to rotate.

[0042] The tension roller 90 is provided at the same height in front of the drive sprocket 94, which reduces the vertical movement of the feed chain 96 and suppresses sliding resistance, thereby reducing the load.

[0043] Furthermore, the front end of the upper chain rail 93 (front driven sprocket 95), the tension roller 90, the drive sprocket 94, the lower central chain rail 92a and the lower front chain rail 92b are arranged in a straight line or approximately in a straight line, which reduces the up and down movement of the feed chain 96, suppresses sliding resistance and reduces the load, and prevents a decrease in work efficiency and work interruptions due to the feed chain 96 falling off.

[0044] In addition, the line of the lower central chain rail 92a is higher than the line connecting the front end of the upper chain rail 93 and the drive sprocket 94, ensuring the winding angle of the feed chain 96 on the drive sprocket 94.

[0045] In addition, the rear end of the rail surface of the lower front chain rail 92b is above the axis of the drive shaft 94a of the drive sprocket 94 and the pivot shaft 90a of the tension roller 90, so that tension can be applied even if the feed chain 96 stretches.

[0046] Furthermore, the front-to-rear length of the lower central chain rail 92a, which is the non-working side rail, is less than half the front-to-rear length of the upper chain rail 93, which is the working side rail, and this length prevents the feed chain 96 from swinging, minimizing the sliding resistance as much as possible, reducing the load, and suppressing the bringing of straw forward.

[0047] The chain rail main frame 91 has a front end 91F facing the fore-and-aft direction welded to a mounting plate 91b, and the mounting plate 91b is fixed to the left side surface of the left upright frame 59a of the pair of left and right upright frames 59a of the suspension base 59 with a bolt 91c, and the middle portion is bent upward and extends diagonally upward toward the rear of the body.

[0048] Therefore, since the rear of the chain rail main frame 91 extends diagonally upward, there is space below the rear of the chain rail main frame 91, making it easier to maintain the drive belt, which is arranged inside the body of the vehicle rather than the chain rail main frame 91.

[0049] The front end of the front end portion 91F of the chain rail main frame 91 is welded and fixed to the mounting plate 91b so that it is positioned forward of the rear bolt 91c and forward of the midpoint between the front bolt 91c and the rear bolt 91c, thereby increasing the mounting rigidity of the front end portion 91F of the chain rail main frame 91.

[0050] A rear end portion 91R of the chain rail main frame 91 is connected by a connecting plate 97 to the lower front end of the lower central chain rail 92a, which is the non-working rail.

[0051] A drive sprocket stay 98 is fixed to the rear of the chain rail main frame 91 in a direction perpendicular to the chain rail main frame 91, and supports the outer center of the drive sprocket 94 so as to be able to rotate freely.

[0052] The drive sprocket stay 98 is disposed below the lower central chain rail 92a, and is positioned so as to overlap the outer side of a counter pulley 99 which transmits driving force to the threshing device 10 by belt.

[0053] Therefore, the drive sprocket stay 98 also functions as a safety guard.

[0054] In addition, on the underside of the portion of the chain rail main frame 91 that is bent diagonally upward toward the rear, a belt cover stay 15 is provided that engages the front part of the front belt cover 11 that covers the left outer side of the transmission belt that transmits driving force from the counter pulley 99 to the threshing device 10.

[0055] Therefore, since the belt cover stay 15 is provided below the part of the chain rail main frame 91 that is bent diagonally upward toward the rear, it does not get in the way of maintenance work that requires removing the front belt cover 11, etc.

[0056] In addition, the belt cover stay 15 is located below the drive sprocket stay 98, below the part of the chain rail main frame 91 that is bent diagonally upward to the rear, so that the chain rail main frame 91 and the drive sprocket stay 98 block straw chips and the like falling from above, preventing the straw chips and the like from getting caught and accumulating, and preventing fires caused by frictional heat from the transmission belt on the side.

[0057] In addition, the base of a chain cover stay 17 which engages the front part of the chain cover 13 which covers the left outer side of the feed chain 96 is welded to the rear end part of a trapezoidal mounting plate 16 which has its base welded to a position below the drive sprocket stay 98 at its midpoint extending diagonally upward to the rear of the chain rail main frame 91.

[0058] Therefore, the chain cover stay 17 is located below the drive sprocket stay 98, below the part of the chain rail main frame 91 that extends diagonally upward to the rear, and the chain rail main frame 91 and the drive sprocket stay 98 block straw chips and the like falling from above, preventing the straw chips and the like from getting caught and accumulating, and preventing the outbreak of fire due to frictional heat from the transmission belt located below.

[0059] In addition, the mounting plate 16 (corresponding to the base of the chain cover stay 17 of the present invention) is located on the outside of the machine body of the counter pulley 99 and is positioned so that it laps (overlaps) the counter pulley 99 in a side view, thereby also functioning as a safety guard.

[0060] In addition, a net (wire mesh) is installed on the front part of the chain cover 13 to dissipate heat, and frames such as the chain rail main frame 91 are arranged around the net to function as a guide when the heat is dissipated from the net.

[0061] In addition, the front part of the chain rail main frame 91 is welded to a mounting plate 91b fixed to the left side of the left upright frame 59a, and the lower front chain rail 92b which is integrally formed with the lower part of the front end of the upper chain rail 93 is connected by a reinforcing frame 60, improving the rigidity of the upper chain rail 93 and the lower front chain rail 92b.

[0062] The connection position of the lower end of the reinforcing frame 60 with the mounting plate 91b is below the upper chain rail 93 and the lower front chain rail 92b and above the chain rail main frame 91, and the reinforcing frame 60 is arranged through the inside of the feed chain 96.

[0063] In addition, the chain rail main frame 91 is configured to be located below the drive sprocket 94, and by arranging the drive sprocket 94 in a position surrounded by frames such as the chain rail main frame 91 and the reinforcing frame 60, a sturdy structure is obtained.

[0064] In addition, the active surface of the chain rail 92a is positioned above the line connecting the centers of the driven sprocket 95 and the driving sprocket 94, so that the driving sprocket 94 properly engages with the feed chain 96 to properly drive and rotate the feed chain 96, preventing errors in transporting the straw due to slackness in the feed chain 96 or work interruptions due to the feed chain 96 falling off.

[0065] In addition, even if the feed chain 96 begins to stretch due to deterioration over time, the chain rail 92a can apply tension to it, allowing normal tension to be applied, preventing work interruptions due to incorrect transport of the stalks or the feed chain 96 falling off.

[0066] In summary, by positioning the chain rail main frame 91 below the drive sprocket 94, which is susceptible to load, the strength is improved and the feed chain drive mechanism 9 is driven to rotate appropriately.

[0067] Finally, the drive arrangement of the drive sprocket 94 will be described.

[0068] A feed chain drive gear case 31 is fixed to the upper part of a vertical frame 30 whose base is fixed to the machine frame 2 .

[0069] The feed chain drive gear case 31 is disposed between the suspension base 59 and the counter pulley 99 .

[0070] A drive shaft 94a is provided at the upper part of the feed chain drive gear case 31 so as to be rotatable in the left-right direction of the machine body, and an input shaft 32a is provided at the lower part so as to be rotatable in the left-right direction of the machine body.

[0071] A drive sprocket 94 is provided at the tip end of the drive shaft 94a in spline engagement, and an input pulley 32 is fixed to the tip end of the input shaft 32a.

[0072] The drive shaft 94a and the base of the input shaft 32a are connected via a chain and gear transmission mechanism 33 for power transmission.

[0073] A transmission belt 35 is wound around the output pulley 34, which rotates by the driving force of the engine 3 and is located near the front end of the upper chain rail 93 at the top of the left upright frame 59a, and the input pulley 32. Tension is applied to the transmission belt 35 by a tension pulley 36, transmitting the driving force of the engine 3 to the input pulley 32, and the driving force is transmitted through the input shaft 32a, the chain and gear transmission mechanism 33, and the drive shaft 94a to drive and rotate the drive sprocket 94.

[0074] The output pulley 34, input pulley 32, tension pulley 36 and transmission belt 35 are disposed in front of the counter pulley 99 and below the tension roller 90 of the feed chain 96, making maintenance easy.

[0075] In addition, the base of the holder 37 is fixed to the counter pulley support stay 36' that supports the counter pulley 99, and a through hole 37a provided at the tip of the holder 37 passes through the tubular portion 31a of the feed chain drive gear case 31 that rotatably supports the drive shaft 94a of the drive sprocket 94, thereby increasing the strength of the drive shaft 94a.

[0076] Therefore, the drive shaft 94a of the drive sprocket 94 is long in the left-right direction, but the holder 37 supports the tubular portion 31a of the feed chain drive gear case 31, which supports the drive shaft 94a for free rotation (preventing vibration in the front-to-back and up-down directions, but not fixing the left-to-right direction of the aircraft, i.e., the thrust direction), thereby preventing vibration of the drive shaft 94a in the up-down and front-to-back directions, preventing damage to the transmission mechanism and feed chain drive gear case 31, and preventing oil leakage from the case, etc.

[0077] The holder 37 is fixed to the counter pulley support stay 36' by a bolt 38 so that the fixed position can be freely adjusted in the front-rear and up-down directions.

[0078] FIG. 6 is a perspective view showing a locking device 71 that locks the radiator cover 70 in the closed state.

[0079] A radiator is provided on the outer right side of the engine 3, which is located below the steering section 22 in which the operator's seat 21 is located. To facilitate maintenance of the radiator, a radiator cover 70 is provided on the outer right side of the radiator, which is pivoted at either the front or rear so as to be able to be opened and closed freely.

[0080] A locking member 71 is provided on the other of the front and rear ends of the radiator cover 70 to lock the radiator cover 70 in the closed state when the radiator cover 70 is closed.

[0081] The locking device 71 is composed of a locking pin 71a extending in the front-rear direction and having its base fixed to the radiator cover 70, and a locking clip 71b formed of a spring plate into which the locking pin 71a fits from the outside and which is fixed to the machine frame.

[0082] Therefore, since the locking device 71 is composed of the locking pin 71a and the locking clip 71b, it has a simple structure and is inexpensive, thereby improving the profitability of the combine.

[0083] The locking device 71 may be configured such that one locking pin 71a fits into two or more locking clips 71b, or may have two or more locking pins 71a that fit into one locking clip 71b. [Explanation of symbols]

[0084] 5 Reaping device 9 Feed chain drive mechanism 10 Threshing Equipment 13 Chain cover 15 Belt cover stay 17 Chain cover stay 37 Holder 90 Tension roller 91 Chainrail main frame 91R rear end 92a chain rail (lower center chain rail) 94 Drive sprocket 95 Driven sprocket 96 Feed Chain 98 Drive sprocket stay 99 Pulley (counter pulley)

Claims

1. In a harvesting machine equipped with a feed chain drive mechanism (9) for transporting stalks harvested by a harvesting device (5) to a threshing device (10), a chain rail main frame (91) for supporting a chain rail (92a) for guiding a feed chain (96) is disposed in front of the feed chain drive mechanism (9), the front part of the chain rail main frame (91) is fixed to a machine body, and the rear part is configured in a rear-upward inclined position, the chain rail (92a) is fixed to a rear end part (91R) of the chain rail main frame (91), and the chain rail main frame (91) is disposed below a drive sprocket (94) of the feed chain (96), a pulley (99) for transmitting driving force to a threshing device (10) by a belt cover stay (15) provided below the drive sprocket stay (98) and a pulley (99) for transmitting driving force to a threshing device (10) by a belt cover stay (15) provided below the drive sprocket stay (98), a pulley (99) for transmitting driving force to a threshing device (10) by a belt is provided below the drive sprocket (94), and a pulley (99) for transmitting driving force to a threshing device (10) is provided below the drive sprocket (94).

2. In a harvesting machine equipped with a feed chain drive mechanism (9) for transporting stalks harvested by a harvesting device (5) to a threshing device (10), a chain rail main frame (91) for supporting a chain rail (92a) for guiding a feed chain (96) is disposed in front of the feed chain drive mechanism (9), the front part of the chain rail main frame (91) is fixed to a machine body, and the rear part is configured in a rear-upward inclined position, the chain rail (92a) is fixed to a rear end part (91R) of the chain rail main frame (91), and the chain rail main frame (91) is disposed below a drive sprocket (94) of the feed chain (96), This harvesting machine is characterized in that a driven sprocket (95) for changing the direction of a feed chain (96) is provided in front of a chain rail (92a), a tension roller (90) is provided behind the driven sprocket (95), and the driven sprocket (95), tension roller (90), drive sprocket (94) and chain rail (92a) are arranged in a straight line or approximately in a straight line.

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