JP2015084747A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester that can restrain waste straws from accumulating in a reaping device.SOLUTION: A combine harvester 1 comprises a supply chain 221 that transfers grain culms reaped by cutting blades 53, a feed chain 96 that supplies the grain culms transferred by the supply chain 221 to a threshing device 10, and an auxiliary supply chain 231 that is arranged below the supply chain 221 and transfers the grain culms between the supply chain 221 and the feed chain 96. The auxiliary supply chain 231 is inclined with respect to a horizontal direction so that it is higher on the side of the feed chain 96 when viewed in a front-back direction of a machine body.

Description

  The present invention relates to a combine.

  The combine feeds and feeds the cereals harvested by the reaping device to the threshing device by the feed chain drive mechanism, stores the grains threshed by the threshing device in the grain tank, and then stores the grains in the grain tank, It is configured to be discharged by a discharge conveyor such as a spiral conveying device. In addition, some conventional combines are provided with an auxiliary chain on the end side of the conveying device of the reaping device that delivers the grain to the feed chain drive mechanism.

  For example, in the combine described in Patent Literature 1, a handling depth adjusting chain provided in the reaping device and a transfer chain for transferring cereals between the feed chain are provided, and further, the lower side of the feed end of the transfer chain The auxiliary chain is arranged in parallel. As a result, when the cereal is delivered from the reaping device to the feed chain, it can be delivered from the reaping device to the feed chain while changing the orientation of the cereal without causing the cereal to become unreasonable.

Japanese Patent No. 4394986

  Here, when the harvesting operation is performed with the combine, sawdust is generated. If this sawdust accumulates in the harvesting device, it may lead to malfunction or failure of the harvesting device. However, since the reaping device is composed of many devices, it has been very difficult to suppress the accumulation of sawdust in the reaping device.

  This invention is made | formed in view of the above, Comprising: It aims at providing the combine which can suppress the accumulation of the sawdust in a mowing apparatus.

  In order to solve the above-described problems and achieve the object, the combine according to the present invention is conveyed by a supply chain (221) that conveys the cereal that has been cut by the cutting blade (53) and the supply chain (221). A feed chain (96) for supplying the cereal cereals to the threshing device (10), a feed chain (221), and a feed chain (221), the feed chain (96), An auxiliary supply chain (231) that takes over the cereals between, and the auxiliary supply chain (231) is horizontal so that the feed chain (96) side is higher when viewed in the longitudinal direction of the machine body. Inclined with respect to the direction.

  In the above combine, it is preferable that a rubber sag is provided below the auxiliary supply chain (231) to drop the sawdust that has fallen below the auxiliary supply chain (231).

  In the above combine, an upper frame (255) is provided above the auxiliary supply chain (231), and the upper frame (255) extends in the horizontal direction along the auxiliary supply chain (231). It is preferable to be inclined.

  In the above combine, it is preferable that a tensioner (235) of the auxiliary supply chain (231) is attached to the upper frame (255).

  In the combine, the tensioner (235) is preferably disposed below the supply chain (221) inside the upper frame (255) in the left-right direction of the body.

  In the above combine, the portion of the auxiliary supply chain (231) on the feed chain (96) side is closer to the feed chain (96) than the portion of the supply chain (221) on the feed chain (96) side. The tensioner (235) is disposed above a portion of the auxiliary supply chain (231) that protrudes toward the feed chain (96) with respect to the supply chain (221). preferable.

  In the above combine, it is preferable that a cover is provided on the upper side of the tensioner (235).

  In the combine, a lower frame (256) is provided below the auxiliary supply chain (231), and the lower frame (256) includes a tensioner (235) of the auxiliary supply chain (231). ) Is preferably attached.

  In the above combine, the auxiliary supply chain (231) is positioned in front of the drive sprocket (233) in the longitudinal direction of the machine body and at least a drive sprocket (233) that transmits a driving force to the auxiliary supply chain (231). The tensioner (235) can be driven by a tip sprocket (236) that moves between the drive sprocket (233) and the tip sprocket (236) in the auxiliary supply chain (231). It is preferable to apply an urging force to it.

  Further, in the above combine, the cutting device (5) including the cutting blade (53) is attached to the body frame (2) so as to be rotatable with respect to the body frame (2) between a use state and an open state. A restricting member is provided below the auxiliary supply chain (231) to restrict the rotation of the mowing device (5) when the mowing device (5) is in use. preferable.

  In the above combine, the auxiliary supply chain (231) is connected to the universal joint (240) by the driving force transmitted from the supply chain (221) side via the universal joint (240) ( It is preferable that the sprocket (224) for the supply chain (221) attached to 227) is formed in a shape that makes tooth skipping easy.

  According to the combine according to the present invention, by tilting the auxiliary supply chain with respect to the horizontal direction so that the feed chain side becomes higher when viewed in the longitudinal direction of the machine body, from between the auxiliary supply chain and the feed chain, It is possible to form a space through which the sawdust is removed below the auxiliary supply chain, and it is possible to suppress the accumulation of the sawdust in the reaping device.

FIG. 1 is a side view of a combine according to the embodiment. FIG. 2 is a plan view of the combine shown in FIG. FIG. 3 is a side view showing the configuration of the combine feed chain drive mechanism shown in FIG. FIG. 4 is a side view showing the internal structure of the combine threshing apparatus shown in FIG. 1. FIG. 5 is a schematic diagram schematically showing a part of the power transmission mechanism of the combine shown in FIG. FIG. 6 is an explanatory diagram of a reaping device included in the combine shown in FIG. FIG. 7 is an AA arrow view of FIG. FIG. 8 is a detailed view of part B in FIG. FIG. 9 is a CC arrow view of FIG. FIG. 10 is a view taken along the line DD in FIG. FIG. 11 is a detailed view of a portion E in FIG. 12 is a cross-sectional view taken along line FF in FIG. FIG. 13 is an explanatory view showing a state where a supply chain is wound around the sprocket shown in FIG. FIG. 14 is a detailed view of the auxiliary supply device shown in FIG. FIG. 15 is a schematic diagram schematically showing a part of the transmission system of the combine harvester shown in FIG. 1. FIG. 16 is a modified example of the combine according to the embodiment, and is an explanatory diagram illustrating a state in which the auxiliary supply device is viewed from below.

  Hereinafter, embodiments of a combine according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

Embodiment
FIG. 1 is a side view of a combine according to the embodiment. FIG. 2 is a plan view of the combine shown in FIG. In the following description, the front-rear direction, the left-right direction, and the up-down direction in the normal usage mode of the combine 1 according to this embodiment will be described as the front-rear direction, the left-right direction, and the up-down direction in each part. Specifically, the front-rear direction is the length direction of the combine 1, the left-right direction is the width direction, and the up-down direction is the height direction. Among these, the front is the traveling direction of the combine 1 during the cutting operation, the left is the left-hand direction toward the front, and the lower is the direction in which gravity acts. In addition, these directions are defined for convenience in order to make the explanation easy to understand, and the present invention is not limited by these directions.

  A combine 1 that is an example of a work vehicle is a combine that can thresh rice husks such as rice and wheat while self-propelled by a driving force generated by an engine 3 as a driving force source. The combine 1 includes a body frame 2, an engine 3 as a driving force source, a traveling device 4, a reaping device 5, a threshing device 10, a glen tank 8, a feed chain drive mechanism 9, and a power transmission mechanism 11. And a control device 180 (see FIG. 3).

  The body frame 2 is a frame-like structural member of the body of the combine 1. The engine 3 is mounted on the front side in the front-rear direction on the body frame 2. The engine 3 is a source of driving force used in the combine 1. The engine 3 is an internal combustion engine, and is a heat engine that converts fuel energy into mechanical work by burning the fuel in a combustion chamber and outputs it as rotational force. The engine 3 is provided below a cabin 22 (shown in FIGS. 1 and 2) provided with an operation seat 21 on the machine body frame 2.

  The traveling device 4 is provided on the lower side in the vertical direction of the body frame 2. The traveling device 4 travels the entire combine 1 with the driving force from the engine 3. The traveling device 4 includes a crawler 41. The crawlers 41 are provided as a pair with a space in the vehicle width direction below the body frame 2 in the vertical direction. The traveling device 4 causes the entire combine 1 to travel forward in the front-rear direction when the crawler 41 is driven by the driving force transmitted from the engine 3.

  The reaping device 5 is provided at the front part of the body frame 2. The reaping device 5 is driven by the driving force from the engine 3 to harvest the cereal and transports the harvested cereal to the threshing device 10 or the like. The mowing device 5 is driven by the driving force from the engine 3 to harvest the cereal, and includes a weed body 51 for weeding the cereal to be vegetated in the field, and a pulling device 52 for causing the lying culm. A cutting blade 53 for cutting the caused culm is provided, and a transporting device 56 for transporting the harvested culm and a suspension base 59 (see FIG. 3) are provided.

  The transport device 56 includes a stock transport device 56 a and a tip transport device 56 b, transports the cereal husk from the reaping device 5 to the threshing device 10, and takes over the feed chain drive mechanism 9.

  FIG. 3 is a side view showing the configuration of the combine feed chain drive mechanism shown in FIG. FIG. 4 is a side view showing the internal structure of the combine threshing apparatus shown in FIG. 1. The suspension stand 59 is provided in front of the threshing device 10 at the rear end portion of the reaping device 5 and is erected from the machine body frame 2. The threshing device 10 is provided behind the reaping device 5 and on the side of the grain tank 8, and includes a lower sorting unit 6 and an upper threshing unit 7. The sorting unit 6 is provided above the body frame 2 and behind the conveying device 56 of the reaping device 5. The sorting unit 6 is provided on the side of the Glen tank 8 and on the left side of the body frame 2. The sorting unit 6 is a device that separates the grains from foreign substances such as cocoons of grains threshed by the threshing unit 7 by the driving force from the engine 3.

  As shown in FIG. 1 and FIG. 4, the sorting unit 6 includes a sorting chamber 61, a swing sorting unit 62 provided in the sorting chamber 61, a red pepper 63 provided below the swing sorting unit 62, A second hot pot 64 provided behind the hot pot 63, a first collecting section 65 and a second collecting section 66, and a dust exhaust fan 67 provided behind the swing sorting section 62 are provided. The sorting chamber 61 is threshed by air blown from the tangs 63 and the second tangs 64 driven by the driving force transmitted from the engine 3, the swinging of the swing sorting unit 62, and the suction action by the dust exhaust fan 67. Contaminants are removed from the object to be processed including the grain shed by the unit 7, and the grain is selected and recovered by the first recovery unit 65 and the second recovery unit 66. A to-be-processed object is what the barrel 72 of the threshing part 7 shed from the cereal. In addition, the cereal meal (removal) which passed the threshing device 10 and the grain was handled is moved to the rear side of the combine 1 by the waste transporting device 150 arranged on the rear side of the feed chain drive mechanism 9. It is conveyed to the arranged excision cutting device (not shown).

  The waste transporting device 150 is configured to convey the waste straw that has been threshed by the threshing unit 7 of the threshing device 10 to the waste cutting device, and the waste transporting chain engaged with the waste transporting chain. An evacuation drive sprocket that is rotationally driven, an evacuation driven sprocket that meshes with the evacuation conveyance chain and is rotatably provided. The waste cutting device cuts the waste put into the waste transporting device 150 and, for example, releases it to the field.

  The threshing unit 7 is provided above the body frame 2 and behind the conveying device 56 of the reaping device 5. The threshing unit 7 is provided on the side of the Glen tank 8 and on the left side of the body frame 2. The threshing unit 7 threshs the cereals conveyed by the driving force from the engine 3. That is, the threshing unit 7 is a device that separates the grains from the cereal husks harvested by the reaping device 5.

  The threshing unit 7 includes an endless annular feed chain 96 for supplying cereals, a handling chamber 71 provided on the left side of the front part, a second processing chamber (not shown) arranged on the right side of the handling chamber 71, and a second And a dust removal processing chamber (not shown) disposed behind the processing chamber. In the handling chamber 71, a cylindrical handling cylinder 72 that is rotatable about a rotation shaft (not shown) extending in the front-rear direction is disposed. The handling cylinder 72 sheds the grain from the tip of the cereal that has been conveyed into the handling chamber 71 by the feed chain 96 or the like by a rotating operation. The second processing chamber 73 is disposed in the second processing chamber, and the dust processing chamber 74 is disposed in the dust processing chamber so as to be rotatable around a rotation shaft (not shown) extending in the front-rear direction. The threshing unit 7 threshs the cereal by rotating the handling cylinder 72, the second processing cylinder 73, and the dust exhausting processing cylinder 74 around the rotation axis by the driving force from the engine 3. The handling chamber 71 is surrounded by a handling net 75 on the lower side in the vertical direction of the handling cylinder 72.

  The Glen tank 8 is provided on the side of the threshing device 10. The Glen tank 8 temporarily stores the grains collected by the sorting unit 6 of the threshing apparatus 10. A drain auger 81 is connected to the grain tank 8. The discharge auger 81 conveys the grains in the grain tank 8 by the driving force from the engine 3 and discharges the grains to the outside of the grain tank 8.

  The feed chain drive mechanism 9 rotates the feed chain 96 and conveys the cereals harvested by the reaping device 5 from the transport device 56 of the reaping device 5 toward the threshing unit 7 of the threshing device 10. The feed chain drive mechanism 9 is disposed on the side opposite to the side where the grain tank 8 of the threshing apparatus 10 is disposed, that is, on the left side. As shown in FIG. 3, the feed chain drive mechanism 9 includes a frame 91, a lower chain rail 92, an upper chain rail 93, a rear end side support rail 107, a drive sprocket 94, a plurality of driven sprockets 95a, 95b, a pinch 97, and the like.

  The frame 91 extends in the front-rear direction of the body frame 2, and a front end portion is attached to a pin 106 (shown in FIG. 3) provided on the suspension base 59 so as to be rotatable around the axis. The frame 91 is rotatably provided around the pin 106 and is locked by a lock mechanism in a state parallel to the front-rear direction of the body frame 2. The frame 91 is disposed outside the counter pulley 120 of the power transmission mechanism 11 in the vehicle width direction, and is provided at a position that partially overlaps the counter pulley 120 when viewed from the side, as shown in FIG.

  The lower chain rail 92 and the upper chain rail 93 are formed in a strip shape extending in the front-rear direction of the machine body frame 2 and support the feed chain 96 on the upper surface. The lower chain rail 92 is provided above the frame 91 and supported by the frame 91. The lower chain rail 92 is provided above the frame 91, and is curved so as to pass through and above the counter pulley 120 so as to avoid the counter pulley 120. The upper chain rail 93 is provided above the lower chain rail 92, and is connected to the lower chain rail 92 via the connection frame 98. The frame 91 is connected to the upper chain rail 93 via the connection frame 98 and the lower chain rail 92. It is supported by. The connection frame 98 connects the lower surface of the upper chain rail 93 and the inner surface of the lower chain rail 92, and is provided on the inner side in the vehicle width direction than the lower chain rail 92.

  The lower chain rail 92 is provided below the upper chain rail 93 so that the lower chain rail 92 is passed through the drive sprocket 94 and the driven sprocket 95b of the endless annular feed chain 96. The upper chain rail 93 supports the upper passage portion 96b of the endless annular feed chain 96 that passes through the drive sprocket 94 and the driven sprocket 95b.

  The rear end side support rail 107 is formed in a strip shape extending in the front-rear direction of the body frame 2, and is provided behind the upper chain rail 93 on the same line as the upper chain rail 93 and is fed to the upper surface. The rear end portion of the chain 96 is supported. The rear end side support rail 107 is supported (provided) by the threshing portion 7 so as to be rotatable up and down so that the rear end portion 107b is directed downward with the front end portion 107a as a center. A guide member 109 is attached to the rear end portion 107b of the rear end side support rail 107 in order to prevent the cereal wrapping around the feed chain 96 or the like.

  The drive sprocket 94 is rotated by a driving force output from a hydraulic continuously variable transmission 112 (to be described later) of the power transmission mechanism 11 to drive the rotation of the feed chain 96, so that the cereals are fed to the threshing device 10 in the feed chain 96. It is intended to be conveyed. The drive sprocket 94 is rotatably supported by the frame 91 via the support plate 101 by being rotatably supported by the support plate 101 attached to the front end portion of the frame 91, and the front end portion of the feed chain 96. It meshes with the inside of (front part).

  In the present embodiment, two driven sprockets 95a and 95b are provided. One driven sprocket 95 a is provided above and in front of the drive sprocket 94, and is rotatably supported by the front end portion of the upper chain rail 93. The other driven sprocket 95 b is provided above and behind the drive sprocket 94 and is rotatably supported by the rear end portion 107 b of the rear end side support rail 107. The front driven sprocket 95 a meshes with the inside of the front end of the feed chain 96, and the rear driven sprocket 95 b meshes with the inside of the rear end of the feed chain 96.

  The inside of the feed chain 96 is meshed with the outer periphery of the drive sprocket 94 and the driven sprockets 95a and 95b, and the feed chain 96 is suspended. In addition, the lower passage portion 96a that passes through the lower side of the drive sprocket 94 and the rear driven sprocket 95b in the feed chain 96 is provided with a counter pulley by the lower chain rail 92 so as to avoid the counter pulley 120. It is curved in front of 120 and through the top. A tensioner sprocket 102 is provided between the drive sprocket 94 and the driven sprocket 95a on the front side. The tensioner sprocket 102 is rotatably supported at the tip of a swing arm 103 that is swingably provided on the support plate 101 and the like, and is pressed from the outside to the inside of the feed chain 96 to thereby feed the feed chain 96. A tension is applied to 96.

  The clamp 97 is provided above the feed chain 96 and is supported by the upper chain rail 93 and the like. The clamp 97 is biased toward the feed chain 96 by the coil spring 104. With such a structure, the pincer 97 imparts a force toward the feed chain 96, particularly on the stock of the cereal. For this reason, the stock source of the cereals fed between the pincer 97 and the feed chain 96 is pinched between the pinch 97 and the feed chain 96, and the feed chain 96 is driven to rotate, whereby the threshing device. 10 is conveyed. In addition, a threshing funnel 105 that guides especially the tip of the cereal into the threshing unit 7 of the threshing device 10 is provided to the right of the pinch 97 in the machine width direction.

  FIG. 5 is a schematic diagram schematically showing a part of the power transmission mechanism of the combine shown in FIG. The power transmission mechanism 11 transmits the driving force of the engine 3 to the traveling device 4, the reaping device 5, the threshing device 10, the feed chain drive mechanism 9, and the like described above. As shown in FIG. 5, the power transmission mechanism 11 includes a travel driving force transmission unit 110, a counter shaft 111, a hydraulic continuously variable transmission 112, a threshing driving force transmission unit 113, and a sorting driving force transmission. Unit 114. The driving force transmission unit 110 for traveling includes a pulley 116 attached to the output shaft 31 of the engine 3, an HST 260 (see FIG. 15) to which driving force is transmitted from the pulley 116 via an endless belt 117, and an output shaft of the HST 260. And a traveling mission 265 (see FIG. 15) that transmits the driving force from the HST 260 to the crawler 41 (see FIG. 1). The driving force transmission unit 110 for traveling connects the cutting device 5 to the output shaft of the HST 260 and transmits the driving force from the engine 3 to the cutting device 5.

  A triple pulley 119 to which driving force is transmitted from the engine 3 is attached to the counter shaft 111 via a triple pulley 32 and an endless belt 33 attached to the output shaft 31 of the engine 3. The counter shaft 111 is rotated by the driving force of the engine 3 by the triple pulleys 32 and 119 and the endless belt 33. Further, the counter shaft 111 is provided with a counter pulley 120 that transmits a driving force to the input shaft 112 a of the hydraulic continuously variable transmission 112.

  The hydraulic continuously variable transmission 112 is configured as a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). As shown in FIGS. 1 and 3, the hydraulic continuously variable transmission 112 is provided between the reaping device 5 and the threshing device 10, and transmits the driving force transmitted from the counter shaft 111 to the feed chain driving mechanism 9. Is transmitted to the drive sprocket 94.

  As shown in FIG. 5, the hydraulic continuously variable transmission 112 is provided with an input pulley 121 on an input shaft 112 a of a hydraulic pump. An endless belt 142 is stretched between the input pulley 121 and the counter pulley 120. For this reason, the driving force from the engine 3 is transmitted to the input pulley 121 attached to the input shaft 112a of the hydraulic pump, and the input shaft 112a rotates with the driving force from the engine 3.

  The hydraulic continuously variable transmission 112 has a hydraulic motor that outputs a mechanical force (rotational force) by the hydraulic pressure generated by the hydraulic pump when the input shaft 112a is rotated by the driving force from the engine 3. . The hydraulic motor of the hydraulic continuously variable transmission 112 includes an output shaft 112b that outputs mechanical force (rotational force). A drive sprocket 94 is connected to the output shaft 112b of the hydraulic continuously variable transmission 112 via a gear box 122 that reduces the rotational speed.

  The gear box 122 is rotated by the hydraulic continuously variable transmission 112 and includes a drive shaft 125. A coupling gear 126 to which the drive sprocket 94 can be attached and detached is provided at the tip of the drive shaft 125 by moving the drive sprocket 94 in the axial direction. In short, the drive sprocket 94 is detachable from the coupling gear 126 in the axial direction. The coupling gear 126 rotates integrally with the drive shaft 125. When the drive sprocket 94 is attached to the tip of the drive shaft 125 via the coupling gear 126, the hydraulic continuously variable transmission 112 and the gear box 122 rotate the drive sprocket 94 together with the drive shaft 125 by the drive force from the engine 3. .

  The hydraulic continuously variable transmission 112 includes a swash plate (not shown) that can be tilted with respect to the input shaft 112a of the hydraulic pump to which the driving force of the engine 3 is transmitted, and a servo motor 130 that changes the tilt angle of the swash plate. have. The swash plate is inclined with respect to the input shaft 112a of the hydraulic pump, thereby changing the flow rate of the hydraulic oil supplied from the hydraulic pump to the hydraulic motor and changing the rotation speed of the output shaft 112b of the hydraulic motor. . Servo motor 130 is controlled by control device 180. The control device 180 controls the servo motor 130 so as to change the inclination angle of the swash plate in accordance with the vehicle speed of the combine 1 or the driving speed of the reaping device 5, and transmits the driving rotational speed transmitted to the driving sprocket 94 to the hydraulic pressure. The variable speed continuously variable transmission 112 is shifted. That is, the control device 180 shifts the rotational speed of the driving force transmitted to the driving sprocket 94 by a speed change operation of the hydraulic continuously variable transmission 112 according to the vehicle speed of the combine 1 or the driving speed of the cutting device 5.

  The threshing driving force transmission unit 113 includes a triple pulley 131 and a pulley 132 attached to the counter shaft 111, a triple pulley 133 connected to the rotating shaft of the handling chamber 71, a second processing cylinder 73, and a dust removal process. A pulley 134 connected to the rotating shaft of the body 74, an endless belt 135, 136 spanned between the triple pulleys 131, 133 and between the pulleys 132, 134, etc. The driving force is transmitted to the threshing unit 7.

  The sorting driving force transmission unit 114 includes two transmission pulleys 137a and 137b provided on the counter shaft 111, a pulley 138 connected to the rotation shaft of the Kara 63 of the sorting unit 6, a collection unit 65 and 66, and a second unit. The pulley 139 connected to the drive shaft that transmits the driving force to the tang 64, the dust exhaust fan 67, the waste transporting device 150, and the waste cutting device is suspended between the pulleys 137a and 139 and between the pulleys 137b and 138. Endless belts 140 and 141 are provided, and the driving force of the engine 3 is transmitted to the selection unit 6 via the counter shaft 111 and the like.

  FIG. 6 is an explanatory diagram of a reaping device included in the combine shown in FIG. FIG. 7 is an AA arrow view of FIG. FIG. 8 is a detailed view of part B in FIG. The cutting device 5 is disposed in front of the body frame 2, the weeding body 51 is located at the lower end of the front end, and the pulling device 52 extends upward at a position slightly behind the weeding body 51. Further, the cutting blade 53 is located behind the weed body 51. Thereby, the reaping device 5 can weed the cereals with the weeding bodies 51, cut the vicinity of the stock of the cereals caused by the pulling device 52 with the cutting blades 53, and reap the cereals.

  The conveying device 56 provided in the reaping device 5 is disposed behind the pulling device 52, and is formed from the front side to the rear side of the front end portion of the feed chain drive mechanism 9 in the front-rear direction. That is, the transport device 56 is provided so that the front end portions of both the stock transport device 56 a and the tip transport device 56 b in the front-rear direction are positioned in front of the front end portion of the feed chain drive mechanism 9. In addition, the rear end portions of the stock transport device 56 a and the tip transport device 56 b are positioned behind the front end portion of the feed chain drive mechanism 9 in the front-rear direction.

  Among the stock transporting device 56a and the tip transporting device 56b, the tip transporting device 56b is provided with a front end portion at a position similar to the position in the front-rear direction of the cutting blade 53, and the front end portion is It is located above the cutting blade 53. The stock former transport device 56a is formed in an oblique direction from the front end position toward the rear and upward.

  In addition, the stock transport device 56a is located on the lower surface side of the tip transport device 56b, and the front end portion thereof is positioned significantly rearward of the front end portion of the tip transport device 56b. For this reason, the front end portion of the stock transport device 56a is located behind and above the front end portion of the tip transport device 56b.

  The reaping device 5 is provided with a handling depth chain 200 that adjusts the handling depth when threshing is performed by the threshing device 10. This handling depth chain 200 is located on the lower surface side of the stock transport device 56a, and is formed from the front side to the back of the front end portion of the stock transport device 56a in the front-rear direction from the front end portion of the stock transport device 56a. Has been. That is, in the handling depth chain 200, the front end portion is positioned forward of the front end portion of the stock source transport device 56a, and the rear end portion is positioned rearward of the front end portion of the stock source transport device 56a. ing.

  Further, the handling depth chain 200 is rotatable in a direction in which the rear end side moves in the vertical direction with the vicinity of the front end as a rotation axis. That is, the handling depth chain 200 disposed on the lower surface side of the stock transport device 56a is largely separated downward from the lower surface of the stock transport device 56a with the vicinity of the front end as a rotation axis, or the stock transport device 56a. It is provided so that rotation is possible so that it can approach the lower surface of this.

  Further, the reaping device 5 is provided with an auxiliary supply device 230 that assists when the grain straw transported by the stock transport device 56 a is handed over to the feed chain drive mechanism 9. The auxiliary supply device 230 is disposed on the lower surface side of the stock transport device 56a, and the rear end portion in the front-rear direction is at the same position as the rear end portion of the stock transport device 56a. Further, the front end portion of the auxiliary supply device 230 is located behind the rear end portion of the handling depth chain 200.

  The handling depth chain 200 that can be rotated in the direction in which the rear end side moves in the up-down direction is in a fully raised state that is a state in which the rear end portion is raised most, and the rear end portion is in the up-down direction of the auxiliary supply device 230. The position is almost the same as the position. As described above, the handling depth chain 200 overlaps the auxiliary supply device 230 at the rear end portion in the highest position.

  In addition, the stock transport device 56 a and the auxiliary supply device 230 are both disposed on the center side of the machine body in the left-right direction with respect to the feed chain drive mechanism 9, that is, on the right side of the feed chain drive mechanism 9. Further, in the stock transport device 56a and the auxiliary supply device 230, the auxiliary supply device 230 has the outer end portion located on the outer side of the aircraft body, that is, the left end portion is located on the left side. ing. For this reason, the auxiliary supply device 230 is disposed closer to the feed chain drive mechanism 9 than the stock transport device 56a.

  FIG. 9 is a CC arrow view of FIG. FIG. 10 is a view taken along the line DD in FIG. FIG. 11 is a detailed view of a portion E in FIG. The tip transport device 56b has a front end located in front of and on the right side of the stock transport device 56a, and a tip transport drive sprocket 210 that transmits driving force to the stock transport device 56b is a stock transport device. It is located on the 56a side. The tip transport drive sprocket 210 and the supply drive sprocket 223 that transmits the driving force to the stock transport device 56 a are attached to a common drive shaft 215.

  Specifically, the stock transport device 56a and the tip transport device 56b transmit the power transmitted from the gear box 122 (see FIG. 5) from the drive shaft 215 that transmits the power to the stock transport device 56a and the tip transport device 56b. It can be driven by the driving force applied. The drive shaft 215 extends substantially in the vertical direction and is rotatably supported by a bearing. A bevel gear 216 is attached to the lower end of the drive shaft 215, and power from the gear box 122 can be transmitted to the drive shaft 215 by the bevel gear 216.

  The tip transport drive sprocket 210 is attached to the upper end of the drive shaft 215, and the supply drive sprocket 223 is located below the tip transport drive sprocket 210 on the drive shaft 215, that is, between the tip transport drive sprocket 210 and the bevel gear 216. Attached in between. Thereby, the stock transport device 56a and the tip transport device 56b can be driven by the driving force transmitted from the common drive shaft 215.

  A supply chain 221, which is included in the stock transport device 56 a and supplies the cereals harvested by the harvesting device 5 to the feed chain 96 side of the feed chain drive mechanism 9, is wound around the supply drive sprocket 223. The stock transport device 56a has a supply driven sprocket 224 on the left side of the supply drive sprocket 223 in the left-right direction, that is, on the outer side of the machine body, on the rear side of the supply drive sprocket 223 in the front-rear direction.

  12 is a cross-sectional view taken along line FF in FIG. FIG. 13 is an explanatory view showing a state where a supply chain is wound around the sprocket shown in FIG. The stock transport device 56a is a tensioner that applies tension to the supply chain 221 by the elastic force of the spring 225a on the front side of the supply drive sprocket 223 in the front-rear direction, in addition to the supply drive sprocket 223 and the supply driven sprocket 224. A supply tensioner 225 is included. The supply chain 221 is wound around the outer peripheral side of the supply drive sprocket 223, the supply driven sprocket 224, and the supply tensioner 225. For this reason, the supply tensioner 225 is directed from the inside to the outside of the supply chain 221. The power is given.

  A supply chain rail 226 is provided on the front side of the supply driven sprocket 224 in the front-rear direction. The supply chain rail 226 is gently curved from the direction toward the supply tensioner 225 to the direction toward the supply driven sprocket 224. Further, the supply chain rail 226 is located on the left side of the supply driven sprocket 224 in the left-right direction of the machine body.

  The supply chain 221 is wound around the supply chain rail 226 so that the inner peripheral portion is supported by the supply chain rail 226. For this reason, the locus of the supply chain 221 between the supply chain rail 226 and the supply driven sprocket 224 is inclined with respect to the front-rear direction so as to go from the left side to the right side from the front side toward the rear side. That is, in the plan view, the supply chain 221 is separated from the feed chain 96 so that the rear line behind the supply chain rail 226 is directed rearward.

  Further, the locus of the supply chain 221 between the supply tensioner 225 and the supply chain rail 226 is inclined so as to go from the right side to the left side as going from the front side to the rear side. For this reason, this part in the stock transport device 56a is substantially on the extension line of the trajectory when transporting the cereal with the tip transport device 56b located on the right side in front of the stock transport device 56a. positioned.

  Further, a guide rod 246 is located at a position facing the supply chain rail 226 through the supply chain 221 and is in contact with the supply chain 221 (see FIG. 9). The guide rod 246 is disposed in a state in which a biasing force in a direction approaching the supply chain 221 is applied by a spring (not shown) that is an elastic member disposed in the guide rod holder 245.

  The auxiliary supply device 230 is disposed on the lower surface side of the stock transportation device 56 a configured as described above, and the driving force is transmitted from the supply driven shaft 227 that is the rotation shaft of the supply driven sprocket 224 ( (See FIG. 11). Specifically, since the supply driven sprocket 224 is attached to the upper end of the rotatable supply driven shaft 227, the supply driven shaft 227 protrudes downward from the supply driven sprocket 224.

  The auxiliary supply drive shaft 237 that transmits power to the auxiliary supply device 230 is supplied via a universal joint 240 that is a universal joint that can transmit rotational force while changing the angle between the connecting shafts. Connected to. That is, the universal joint 240 has an upper end connected to the lower end of the supply driven shaft 227 and a lower end connected to the upper end of the auxiliary supply drive shaft 237 to connect the supply driven shaft 227 and the auxiliary supply drive shaft 237. Yes. A bellows 241 that is a protective member of the universal joint 240 is disposed around the universal joint 240, and the universal joint 240 is covered with the bellows 241.

  An auxiliary supply drive sprocket 233 is attached to the auxiliary supply drive shaft 237. Thereby, the auxiliary supply drive sprocket 233 can be rotated by the drive force transmitted through the supply driven shaft 227 and the universal joint 240. Auxiliary which is a chain that auxiliary supply device 230 has, and auxiliaryly conveys cereal straw supplied from stock transport device 56 a to feed chain drive mechanism 9 between stock transport device 56 a and feed chain drive mechanism 9. The supply chain 231 is wound around the auxiliary supply drive sprocket 233. The auxiliary supply chain 231 is provided with protrusions 231a protruding outward in the circumferential direction at equal intervals.

  The auxiliary supply device 230 has an auxiliary supply driven sprocket 234 on the left side of the auxiliary supply drive sprocket 233 in the left-right direction, with the position in the front-rear direction being substantially the same as the position of the auxiliary supply drive sprocket 233. The auxiliary supply driven sprocket 234 is rotatably arranged around the auxiliary supply driven shaft 238.

  Further, the auxiliary supply device 230 has a position in the front-rear direction in front of the auxiliary supply drive sprocket 233 and the auxiliary supply driven sprocket 234 and a position in the left-right direction at a position between the auxiliary supply drive sprocket 233 and the auxiliary supply driven sprocket 234. And an auxiliary supply tip sprocket 236 (see FIG. 14). The auxiliary supply chain 231 is wound around the outer periphery of these auxiliary supply drive sprocket 233, auxiliary supply driven sprocket 234, and auxiliary supply tip sprocket 236.

  The stock transportation device 56a has a plate-like upper frame 255 located on the upper side of the auxiliary supply chain 231 and a plate-like lower frame 256 located on the lower side of the auxiliary supply chain 231. The members constituting the stock transport device 56a such as the auxiliary supply driving shaft 237 and the auxiliary supply driven shaft 238 are supported by the upper frame 255 and the lower frame 256.

  FIG. 14 is a detailed view of the auxiliary supply device shown in FIG. In addition to the auxiliary supply drive sprocket 233, the auxiliary supply driven sprocket 234, and the auxiliary supply tip sprocket 236, the auxiliary supply device 230 is provided on the front side of the auxiliary supply drive sprocket 233 in the front-rear direction by the elastic force of the spring 235a. The auxiliary supply tensioner 235 which is a tensioner for applying tension to the 231 is provided. The auxiliary supply tensioner 235 is disposed on the upper surface of the upper frame 255 and is disposed below the supply chain 221 inside the upper frame 255 in the left-right direction of the machine body. The auxiliary supply tensioner 235 is located on the auxiliary supply chain 231 wound around the auxiliary supply drive sprocket 233 and the like between the auxiliary supply drive sprocket 233 and the auxiliary supply tip sprocket 236 from the outside of the auxiliary supply chain 231. An urging force is applied to the inside.

  An auxiliary supply guide member 239 is provided on the front side of the auxiliary supply driven sprocket 234 in the front-rear direction. The auxiliary supply guide member 239 is gently curved from the direction toward the auxiliary supply tip sprocket 236 to the direction toward the auxiliary supply driven sprocket 234. Further, the auxiliary supply guide member 239 has a position in the left-right direction of the left side of the body that supports the auxiliary supply chain 231 in the left-right direction of the body substantially the same as the position in the left-right direction of the left side of the auxiliary supply driven sprocket 234. ing.

  For this reason, the end of the auxiliary supply chain 231 on the left side of the machine body is a straight line portion 232 whose locus is linearly formed from the auxiliary supply guide member 239 to the auxiliary supply driven sprocket 234 along the longitudinal direction of the machine body. For this reason, the supply chain 221 is further away from the feed chain 96 as the rear line moves rearward, whereas the auxiliary supply chain 231 has a linear portion 232 that is a rear rear line from the auxiliary supply guide member 239. , Substantially parallel to the feed chain 96. The straight portion 232 of the auxiliary supply chain 231 is located on the left side of the left end portion of the supply chain 221 in the left-right direction of the machine body, and is disposed at a position closer to the feed chain 96 than the supply chain 221. .

  Further, in the auxiliary supply device 230 configured as described above, the trajectory plane which is the surface surrounded by the trajectory of the auxiliary supply chain 231 is inclined with respect to both the trajectory plane of the supply chain 221 and the trajectory plane of the feed chain 96. (See FIGS. 10 and 11). That is, the rotation axis when the auxiliary supply chain 231 goes around is inclined with respect to both the rotation axis of the supply chain 221 and the rotation axis of the feed chain 96.

  Specifically, the rotation axis of the feed chain 96 is rotated in a direction parallel to the left-right direction of the machine body. For this reason, the trajectory plane of the feed chain 96 extends in the vertical direction. . Further, the supply chain 221 has a direction in which the drive shaft 215 is slightly inclined with respect to the vertical direction, and is slightly inclined in the direction from the right side to the left side from the upper side to the lower side. For this reason, the locus surface of the supply chain 221 is slightly inclined with respect to the horizontal direction in the direction from the upper side to the lower side as it goes from the left side to the right side.

  On the other hand, the auxiliary supply chain 231 is inclined in the same direction as the supply chain 221, and the inclination degree is larger than the inclination degree of the supply chain 221. That is, the auxiliary supply drive shaft 237 is slightly larger than the drive shaft 215 in the direction from the right side to the left side as it goes from the upper side to the lower side. For this reason, the trajectory plane of the auxiliary supply chain 231 is slightly larger than the trajectory plane of the supply chain 221 in the horizontal direction in the direction from the upper side to the lower side as it goes from the left side to the right side. Since the auxiliary supply chain 231 is inclined so that the feed chain 96 side becomes higher in this way, a space is formed below the auxiliary supply device 230. The upper frame 255 and the lower frame 256 are inclined with respect to the horizontal direction along the auxiliary supply chain 231 together with the auxiliary supply chain 231.

  The degree of inclination of the locus surface of the chain is changed from a state close to horizontal to a state close to vertical in the order of the supply chain 221, the auxiliary supply chain 231, and the feed chain 96, that is, from the center side toward the outside. In addition, the inclination angles are relatively different. In other words, the auxiliary supply chain 231 has an intermediate posture with respect to the posture of the supply chain 221 and the posture of the feed chain 96 in a front view. As described above, the auxiliary supply chain 231 that is inclined with respect to both the supply chain 221 and the feed chain 96 becomes higher in the vertical direction as it approaches the feed chain 96 from the supply chain 221 side in the left-right direction of the machine body. Inclined in the direction.

  As described above, the supply chain 221, the auxiliary supply chain 231, and the feed chain 96 having different relative angles have positions where the ends of the three chains are aligned in a straight line when viewed from the front ( FIG. 11, straight line L). That is, the portion of the supply chain 221 that is located near the feed chain 96 is formed so as to be separated from the feed chain 96 as it goes rearward, so that it is located near the feed chain 96 in the supply chain 221 and the auxiliary supply chain 231. The portions have different relative positional relationships at positions in the front-rear direction.

  As described above, of the supply chain 221 and the auxiliary supply chain 231 having different relative positional relationships in the front-rear direction, the front end of the supply chain 221 and the front end of the feed chain 96 are connected at a predetermined position in the front-rear direction. The straight line coincides with the straight line connecting the tip of the auxiliary supply chain 231 and the tip of the feed chain 96. Therefore, in this portion, as indicated by a straight line L, the tips of the supply chain 221, the auxiliary supply chain 231 and the feed chain 96 are aligned on a straight line when viewed in the front-rear direction.

  In this way, the portion where the leading ends of the supply chain 221, the auxiliary supply chain 231 and the feed chain 96 are aligned on one straight line is specifically the front end portion of the straight portion 232 (see FIG. 14) of the auxiliary supply chain 231. ing. In other words, the supply chain 221, the auxiliary supply chain 231, and the feed chain 96 are positioned at the front end portion of the straight portion 232 of the auxiliary supply chain 231 in the front-rear direction, and the ends of the respective chains are aligned on a straight line.

  In addition, the handling depth chain 200 whose rear end portion overlaps with the auxiliary supply device 230 in the upmost state has a guide rod 246 (see FIG. 9) with respect to the auxiliary supply chain 231 whose trajectory surface is inclined. It overlaps with the auxiliary supply chain 231 in the vertical direction at the position of the rear end.

  The supply driven shaft 227 to which the supply driven sprocket 224 is attached is disposed in parallel with the drive shaft 215. For this reason, the auxiliary supply drive shaft 237 is inclined with respect to the supply driven shaft 227, but the auxiliary supply drive shaft 237 is connected to the supply driven shaft 227 via the universal joint 240. For this reason, the auxiliary supply drive shaft 237 inclined with respect to the supply driven shaft 227 rotates integrally with the supply driven shaft 227 while maintaining a state inclined relative to the supply driven shaft 227. It is possible.

  FIG. 15 is a schematic diagram schematically showing a part of the transmission system of the combine harvester shown in FIG. 1. The driving force transmitted from the pulley 116 attached to the output shaft 31 of the engine 3 to the HST 260 via the endless belt 117 is transmitted to the HST 260 via the pulley 262 attached to the input shaft 261 of the HST 260. That is, the endless belt 117 is stretched between the pulley 116 of the output shaft 31 of the engine 3 and the pulley 262 of the input shaft 261 of the HST 260.

  In addition, a pulley 267 attached to the output shaft 266 of the traveling mission 265 that transmits the driving force from the HST 260 to the crawler 41, and a pulley attached to the cutting device input shaft 270 that is an input shaft for the driving force of the cutting device 5 An endless belt 268 is stretched between the belt 271 and the belt 271. Thereby, a part of the driving force output from the traveling mission 265 is transmitted to the reaping device 5.

  The drive shaft 215, which is an input shaft for driving force for driving the stock transport device 56a, the tip transport device 56b, and the auxiliary supply device 230, is engaged with the gear on the reaping device input shaft 270 side, so that the reaping device input shaft. A driving force is transmitted from 270.

  The cutting blade 53 of the cutting device 5 is driven by transmitting a driving force from the cutting device input shaft 270 to the cutting blade drive shaft 275 that drives the cutting blade 53 via the transmission shaft 273. Transmit force to drive. Further, a driving force is transmitted from the reaping device input shaft 270 to the pulling drive shaft 281 of the pulling device 52 to the pulling device 52 that causes the harvested culm. Thereby, the driving force for driving the pulling chain 282 is transmitted to the pulling device 52.

  The combine 1 which concerns on this embodiment consists of the above structures, and demonstrates the effect | action below. During the operation of the combine 1, the operator operates the various operating means provided in the cabin 22, so that the combine 1 is run or the cereal is harvested. As described above, when the combine 1 is operated, the engine 3 that is a power source is driven, and the power generated by the engine 3 is output from the output shaft 31 and transmitted to each operation unit. Performs the desired operation.

  For example, when the harvesting operation is performed by the combine 1, the travel device 4 is driven by the driving force generated by the engine 3, and the cereal is harvested by the harvesting device 5 while traveling. At this time, the reaping device 5 is sown by the weeding body 51, causes the lying cereal to be raised by the pulling device 52, and then reaped by the cutting blade 53. Then, the combine 1 conveys the cereals harvested by the reaping device 5 to the handling room 71 of the threshing unit 7 of the threshing device 10 by the transport device 56. At that time, the combine 1 is driven to rotate, with the feed chain 96 sandwiching the root of the culm between the sushi 97 and the threshing funnel 105 guiding the tip of the cereal into the threshing unit 7. While the feed chain 96 conveys the culm backward, in the handling chamber 71, the handling cylinder 72 is rotated about the rotation axis by the driving force transmitted from the engine 3, thereby threshing the cereal.

  The threshed grain and the like fall into the sorting room 61 through the handling net 75. Then, the combine 1 sorts the grains in the sorting chamber 61 of the sorting unit 6 by the air blown from the Kara 63 and the second Kara 64, the swing of the swing sorting unit 62, and the suction action by the dust exhaust fan 67. The selected grain is stored in the Glen tank 8.

  At the time of the mowing operation, the cereal is harvested by the cutting blade 53 of the reaping device 5 as described above, and conveyed to the feed chain drive mechanism 9 side by the conveying device 56. The stock is transported by the transport device 56b, and the stock company side is transported by the stock device transport device 56a. Specifically, since the tip conveying device 56b is inclined from the lower side toward the upper side from the front of the machine body to the rear, the tip conveying device 56b conveys the cereal while raising it.

  Since the stock transporting device 56a is disposed at a position near the rear end of the tip transporting device 56b, the stock transporting device 56a waits for the cereals to be transferred to the position of the stock transporting device 56a. Transport. The conveying device 56 conveys the cereals in a state close to vertical to the feed chain drive mechanism 9 side while laying the culm in a state close to vertical in a state close to the horizontal by the tip conveying device 56b and the stock transporting device 56a.

  At that time, since the handling depth chain 200 is disposed on the front side of the stock source transport device 56a, the cereal straw conveyed in the direction of the stock source transport device 56a is the handle depth chain 200. Although the cereals after conveyance are conveyed, the handling depth chain 200 is rotatable in the direction in which the rear end side moves in the vertical direction. For this reason, by rotating the handling depth chain 200, the stock transporter 56 a in which the cereal straw is handed over from the handling depth chain 200 depends on the turning state of the handling depth chain 200. Will hold a different position.

  For this reason, the feed chain drive mechanism 9 in which the culm is inherited from the stock transporter 56a also holds the position corresponding to the state of holding the culm in the stock transporter 56a. As a result, the length of the cedar in which the tip portion is guided into the threshing portion 7 while being conveyed by the feed chain drive mechanism 9 changes, and the handling length at the threshing portion 7 changes. Changes. At the time of the cutting operation, the handling depth can be changed in this way by changing the height of the handling depth chain 200.

  Further, an auxiliary supply device 230 is disposed on the lower surface side of the stock transport device 56a, and the auxiliary supply device 230 is disposed to a position closer to the feed chain drive mechanism 9 than the stock transport device 56a. Therefore, when taking over cereal from the stock transporting device 56 a to the feed chain drive mechanism 9, it is taken over via the auxiliary supply device 230. Since the inclination angle of the auxiliary supply chain 231 viewed from the front-rear direction is an intermediate angle between the supply chain 221 and the feed chain 96, the auxiliary supply device 230 takes over smoothly when taking over the cereal. be able to.

  In this way, when the cereals are transported, swarf is generated. Such swarf is formed by tilting the auxiliary supply chain 231 so that the feed chain 96 side becomes higher. The space below 230 is removed from between the auxiliary supply chain 231 and the feed chain 96. Further, since the upper frame 255 of the auxiliary supply device 230 is also tilted together with the auxiliary supply chain 231, the shavings and soot on the upper frame 255 slide on the upper frame 255 and drop downward. For this reason, it is difficult for the sawdust to accumulate on the grain path of the cereals.

  The handling depth chain 200 takes over the cereal to the supply chain 221 of the stock transport device 56a, but some cereals cannot be taken over to the supply chain 221 smoothly. In the maximum raising state of the handling depth chain 200, the auxiliary supply chain 231 overlaps in the vertical direction. For this reason, even when there is a culm that cannot be handed over smoothly, the culm that has not been handed over to the supply chain 221 falls due to the overlap of the handling depth chain 200 and the auxiliary supply chain 231. Without being carried over to the auxiliary supply chain 231.

  At this time, since the auxiliary supply chain 231 is inclined in the direction in which the feed chain 96 side is raised, the cereal grains handed over from the handling depth chain 200 to the auxiliary supply chain 231 are picked up by the auxiliary supply chain 231. It is transported upward. Furthermore, since the rear end portion of the handling depth chain 200 overlaps the auxiliary supply chain 231 at the position of the rear end portion of the guide rod 246, the handling depth chain 200 is handed over to the auxiliary supply chain 231. The cereals that are no longer held by the guide slab 246 are taken over.

  The supply chain 221 is separated from the feed chain 96 as the portion on the feed chain 96 side moves from the front to the rear, whereas the auxiliary supply chain 231 has a straight portion 232 formed along the feed chain 96. It is substantially parallel to the feed chain 96. For this reason, when handing over cereals from the stock transporter 56a to the feed chain drive mechanism 9 via the auxiliary supply device 230, the supply chain 221 is gradually separated from the cereals and is smoothly fed by the auxiliary supply chain 231. Takes over to 96.

  In addition, the supply chain 221, the auxiliary supply chain 231, and the feed chain 96 that take over the cereals in this way have positions where the tips of the three chains are aligned in a straight line when viewed from the front (FIG. 11, Straight line L), in this part, the cereals are taken over in a straight posture. For this reason, in this portion, the cereal meal is smoothly transferred from the supply chain 221 to the feed chain 96. In addition, since this portion is the front end of the straight portion 232 of the auxiliary supply chain 231, the cereal rice cake is smoothly transferred from the auxiliary supply chain 231 to the feed chain 96 and gradually separated from the supply chain 221.

  The driving of the auxiliary supply device 230 will be described. The auxiliary supply drive shaft 237 that is the drive shaft of the auxiliary supply device 230 is connected to the supply driven shaft 227 of the stock transport device 56a via the universal joint 240. Yes. For this reason, the auxiliary supply drive shaft 237 has a relative angle with respect to the supply driven shaft 227, while the driving force from the stock transport device 56a is smoothly transmitted from the supply driven shaft 227, and the auxiliary supply device 230 is It is driven by this driving force.

  At that time, both the supply chain 221 of the stock transport device 56a and the auxiliary supply chain 231 of the auxiliary supply device 230 are driven by the driving force output from the traveling mission 265, and thus are driven in synchronization with the vehicle speed. . For this reason, the stock transportation device 56a and the auxiliary supply device 230 are driven at a speed corresponding to the vehicle speed and transport the cereals.

  The feed chain 96 is driven by the driving force output from the hydraulic continuously variable transmission 112 controlled by the control device 180, but the control device 180 is driven from the hydraulic continuously variable transmission 112. Shift control of the hydraulic continuously variable transmission 112 is performed so that the rotational speed of the force becomes a speed according to the vehicle speed. For this reason, the feed chain 96 is also driven in synchronism with the vehicle speed and conveys the cereal.

  In the combine 1 according to the above embodiment, the auxiliary supply chain 231 is inclined with respect to the horizontal direction so that the feed chain 96 side becomes higher when viewed in the longitudinal direction of the machine body. A space through which the sawdust is removed from between 96 and the auxiliary supply chain 231 can be formed. As a result, the accumulation of sawdust in the reaping device 5 can be suppressed.

  In addition, the upper frame 255 disposed above the auxiliary supply chain 231 is inclined with respect to the horizontal direction along the auxiliary supply chain 231. Slides down on the upper frame 255. As a result, accumulation of sawdust in the reaping device 5 can be more reliably suppressed.

  Further, since the auxiliary supply tensioner 235 is attached to the upper surface of the upper frame 255, the space below the auxiliary supply chain 231 can be increased more reliably, and the waste can be released. As a result, accumulation of sawdust in the reaping device 5 can be more reliably suppressed.

  Further, since the auxiliary supply tensioner 235 is disposed below the supply chain 221 inside the upper frame 255 in the left-right direction of the machine body, it is possible to make it difficult for the dust of the auxiliary supply tensioner 235 to adhere. As a result, the drivability of the auxiliary supply chain 231 can be improved.

  Further, since the auxiliary supply tensioner 235 is provided so as to apply a biasing force between the auxiliary supply drive sprocket 233 and the auxiliary supply tip sprocket 236 in the auxiliary supply chain 231, the auxiliary supply tensioner 235 is provided with the auxiliary supply chain. A biasing force can be applied to the loose side of 231 and to the non-transport side. As a result, it is possible to appropriately generate tension for the auxiliary supply chain 231 and to ensure smooth conveyance of the cereals in the auxiliary supply chain 231.

[Modification]
In the above-described combine 1, the auxiliary supply tensioner 235 is disposed on the upper surface of the upper frame 255, but the auxiliary supply tensioner 235 may be disposed on a member other than the upper frame 255. FIG. 16 is a modified example of the combine according to the embodiment, and is an explanatory diagram illustrating a state in which the auxiliary supply device is viewed from below. The auxiliary supply tensioner 235 may be disposed on the lower surface of the lower frame 256, for example, as shown in FIG. Thus, by providing the auxiliary supply tensioner 235 on the lower frame 256 side, unevenness on the upper surface of the upper frame 255 can be reduced. Can be. Thereby, accumulation of the sawdust in the reaping device 5 can be suppressed more reliably.

  Further, the auxiliary supply tensioner 235 may be disposed in a dead space. For example, the portion of the auxiliary supply chain 231 on the feed chain 96 side protrudes more toward the feed chain 96 than the portion of the supply chain 221 on the feed chain 96 side, so that the auxiliary supply tensioner 235 is connected to the supply chain in the auxiliary supply chain 231. You may arrange | position above the part which protrudes in the feed chain 96 side rather than 221. FIG. Since this portion is a region where the cereals do not enter, the space efficiency can be improved by arranging the auxiliary supply tensioner 235 in this portion.

  Further, a cover (not shown) for guiding the cereals may be provided on the upper side of the auxiliary supply tensioner 235. In this way, by providing the auxiliary supply tensioner 235 with a cover, the cereal straw can be protected. As described above, the auxiliary supply tensioner 235 is provided so that the tension of the auxiliary supply chain 231 can be generated by applying a biasing force to the auxiliary supply chain 231 regardless of the position or configuration of the auxiliary supply tensioner 235. If it is, the form will not be ask | required.

  Moreover, in the combine 1 mentioned above, although the member for dropping sawdust is not provided, you may provide the member for actively dropping sawdust. For example, a rubber sag (not shown) may be provided below the auxiliary supply chain 231 for dropping sawdust that has dropped into the space below the auxiliary supply chain 231 to the field. In this way, by providing a member for positively dropping the sawdust, accumulation of the sawdust in the reaping device 5 can be more reliably suppressed.

  Moreover, it is preferable that the supply driven sprocket 224 attached to the supply driven shaft 227 connected to the universal joint 240 is formed in a shape that allows easy tooth skipping. By making the supply driven sprocket 224 into a shape that facilitates tooth skipping, it is possible to skip teeth when an overload is applied. Thereby, it can suppress that a big load is applied to the universal joint 240, and the universal joint 240 can be protected.

  Further, the reaping device 5 is attached to the body frame 2 so as to be rotatable with respect to the body frame 2 between the use state and the open state, and can be moved from the front of the body frame 2 for maintenance. Preferably, it is configured. The reaping device 5 includes, for example, a rotation shaft extending in the vertical direction at the left end, and the reaping device 5 is opened with respect to the body frame 2 by rotating about the rotation shaft. The entire apparatus 5 is configured to be moved to the left front of the body frame 2. In this case, it is preferable that the bolt, which is a restricting member that restricts the rotation of the reaping device 5 when the reaping device 5 is in use, is disposed below the auxiliary supply chain 231. By tilting the auxiliary supply chain 231 with respect to the horizontal direction, a large space is formed below the auxiliary supply chain 231, so that a bolt for fixing the rotation of the reaping device 5 faces this portion. Thus, space efficiency can be improved.

  Further, since the auxiliary supply chain 231 is inclined so that the feed chain 96 side becomes higher, it is possible to secure a movement space of a member that rotates when the reaping device 5 is opened. Thereby, the structure which rotates the reaping device 5 can be comprised easily.

  Moreover, the combine 1 may combine suitably the structure etc. which are used in embodiment and the modification which were mentioned above, or may use things other than the structure mentioned above. Regardless of the configuration of the combine 1, the auxiliary supply chain 231 is inclined with respect to the horizontal direction so that the feed chain 96 side becomes higher when viewed in the longitudinal direction of the machine body. A space through which the sawdust is removed from the gap to the lower side of the auxiliary supply chain 231 can be formed, and accumulation of the sawdust in the reaping device 5 can be suppressed.

DESCRIPTION OF SYMBOLS 1 Combine 2 Machine frame 3 Engine 4 Traveling device 5 Cutting device 6 Sorting part 7 Threshing part 8 Glen tank 9 Feed chain drive mechanism 10 Threshing apparatus 11 Power transmission mechanism 21 Operation seat 22 Cabin 41 Crawler 51 Weed body 52 Pulling device 53 Cutting blade 55 Cutting part 56 Conveying device 56a Stock transporting device 56b Ear tip conveying device 81 Discharge auger 96 Feed chain 97 Clamping 110 Driving driving force transmission unit 111 Counter shaft 112 Hydraulic stepless transmission 113 Threshing driving force transmission unit 114 Selection driving force transmission unit 122 Gear box 123 Plate 150 Discharge transport device 180 Control device 200 Handle depth chain 210 Tip transport drive sprocket 215 Drive shaft 221 Supply chain 223 Supply drive sprocket 224 Supply driven sprocket 225 Supply tensioner 226 Supply chain rail 227 Supply driven shaft 230 Auxiliary supply device 231 Auxiliary supply chain 232 Linear portion 233 Auxiliary supply drive sprocket (drive sprocket)
234 Auxiliary supply driven sprocket 235 Auxiliary supply tensioner (tensioner)
236 Auxiliary supply tip sprocket (tip sprocket)
237 Auxiliary supply drive shaft 238 Auxiliary supply driven shaft 239 Auxiliary supply guide member 240 Universal joint (universal joint)
245 Guide rod holder 246 Guide rod 255 Upper frame 256 Lower frame 260 HST
265 Mission for traveling 270 Cutting device input shaft 275 Cutting blade drive shaft 281 Pulling drive shaft 282 Pulling chain

Claims (11)

A supply chain for conveying cereals cut by a cutting blade;
A feed chain that supplies the threshing device conveyed in the supply chain to a threshing device;
An auxiliary supply chain that is disposed below the supply chain and that takes over the culms between the supply chain and the feed chain;
With
The auxiliary supply chain is inclined with respect to a horizontal direction so that the feed chain side is elevated when viewed in the longitudinal direction of the machine body.   The combine according to claim 1, wherein a rubber sag is provided below the auxiliary supply chain for dropping sawdust that has fallen below the auxiliary supply chain. An upper frame is provided above the auxiliary supply chain,
The combine according to claim 1 or 2, wherein the upper frame is inclined with respect to a horizontal direction along the auxiliary supply chain.   The combine according to claim 3, wherein a tensioner of the auxiliary supply chain is attached to the upper frame.   The combiner according to claim 4, wherein the tensioner is disposed below the supply chain on the inner side of the upper frame in the left-right direction of the body. The feed chain side portion of the auxiliary supply chain protrudes more toward the feed chain than the feed chain side portion of the supply chain,
The combiner according to claim 4, wherein the tensioner is disposed above a portion of the auxiliary supply chain that protrudes toward the feed chain with respect to the supply chain.   The combine according to claim 6, wherein a cover is provided on the upper side of the tensioner. A lower frame is provided below the auxiliary supply chain,
The combine according to claim 1 or 2, wherein a tensioner of the auxiliary supply chain is attached to the lower frame. The auxiliary supply chain can be driven by at least a drive sprocket that transmits a driving force to the auxiliary supply chain and a tip sprocket that is positioned in front of the drive sprocket in the longitudinal direction of the machine body,
The combiner according to any one of claims 4 to 8, wherein the tensioner applies a biasing force to a portion between the drive sprocket and the tip sprocket in the auxiliary supply chain. The cutting device including the cutting blade is attached to the machine frame so as to be rotatable with respect to the machine frame between a use state and an open state.
The combine according to any one of claims 1 to 9, wherein a regulating member that regulates rotation of the harvesting device when the harvesting device is in use is disposed below the auxiliary supply chain. In the auxiliary supply chain, the driving force from the supply chain side is transmitted through a universal joint,
The combine according to any one of claims 1 to 10, wherein the sprocket for the supply chain attached to a shaft connected to the universal joint is formed in a shape that allows easy tooth skipping.

Images