JP2007029002A - Grain straw raker of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems wherein grain straws are clogged, broken, dropped, or the like, due to a constant space between the shafts of the raking star wheels of both rakers on right and left sides, when grain straws picked up with both right and left pick-up devices are raked and conveyed with the star wheels, raking belts and the like in large amounts. <P>SOLUTION: The grain straws picked up with right and left front pick-up devices are raked and conveyed with the raking star wheels 7a, 8a and raking belts 7b, 8b of both the right and left rakers 7, 8. The right raker 7 is moved with a moving device 10 in the left outer direction to shoal the engaging states of the raking star wheels 7a, 8a of the right and left rakers 7, 8 with the raking belts 7b, 8b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  A stir-up starfoil for scrambling and transferring the row of cereals on one side and the row of rows on the other side to the rear side of the pulling device for raising the culm at the front of the reaper that cuts and transfers the culm; and There are left and right scratching devices, such as a scraping belt. This left scratching device on the left side (driven side) is provided with a moving device that moves the upper rear portion with the front lower portion as the rotation center, and this moving device moves the left scratching device to the left outer side. This is a technique provided to change the meshing state of each of the right staring device and each of the whitening belts shallowly, and can be used as a combine culm picking device.

  As shown in Japanese Patent Laid-Open No. 10-136755, the harvester for harvesting and transporting corn straw is a front pulling device. The raised cedar is squeezed by a pair of left and right scraping belts provided on the rear side, and a second sub endless chain mechanism that is scraped by each scraping foil and transferred rearward, and a first sub endless chain mechanism. The cereals conveyed rearward are handed over and transferred by the main endless chain mechanism toward the culm vertical transport device, and further transferred by the culm vertical transport device.

Each of the pair of left and right scraping belts and each scraping wheel is fixed at a predetermined position, and the meshing state of the two cannot be changed.
JP-A-10-136755

  The pestle raised by the pestle pulling device is transferred to the rear upper part of the rake by a pair of left and right rake belts and an rake wheel, and these rake belts and the rake wheel are pivotally supported. The distance between the shafts is constant. For this reason, when a large amount of cereals are stirred, cereals may be broken, cereals may be clogged, or spillage may occur. However, the present invention is intended to solve these problems.

  For this purpose, in the invention according to claim 1, the reaping machine (4) for cutting and transferring the cereals at the front part of the traveling chassis (2) to the rear upper part raises the cereals at the front part. And a plurality of pulling devices (6), and each of the starfoils (7a), (8a), and each of the scooping belts for scrambling and transferring the one side and the other side to the rear side Left and right left side scraping devices (7), (8) consisting of (7b), (8b), etc., a cutting blade device (5c) for trimming the spiked culm, and the root side of the harvested cereal The root transfer device (9a), the tip transfer device (9b), and the left (driven side) left rake device (7) for transferring the head and the tip side to the rear upper part are centered around the front lower part (b). ), And a moving device (10) for moving and operating the rear upper part, the left device is driven by the operation of the moving device (10). The setting star wheel (7a) and the setting belt (7b) are movable to the left outer side, the right side (driving side) the right driving device (8), the setting star wheel (8a) and This is a combine harvester scraping device characterized in that it is provided to make the meshing state with the scraping belt (8b) shallow.

  The harvester for harvesting napped cereals with a combine harvester is provided at the front part of the traveling chassis (2), and the reaper (4) for harvesting and transferring the cereals to the upper rear part is A plurality of pulling devices (6) for pulling up and pulling up one side and the other side of the row, each of the scratches provided on the rear side for picking up and transferring the raised grains The left and right scratching devices (7), (8) on both the left and right sides, which are composed of the embedded star foils (7a), (8a) and the respective scraping belts (7b), (8b), etc. The culm being scraped is cut by the cutting blade device (5c), and the root side and the tip side of the chopped cereal are taken over by the root transfer device (9a) and the tip transfer device (9b). And transferred to the rear upper part.

  The left side (driven side) left scavenging device (7) has the front lower part as the rotation center (A) and the rear upper part by the operation of the moving device (10). The take-up star wheel (7a), the take-up belt (7b), etc. are configured to be movable to the left outer side, and thereby, the take-up star wheel (8a) of the right take-up device (8) on the right side (drive side). ) And the biting belt (8b) so as to make the meshing state shallow, when a large amount of cereal is scraped between the left and right biting devices (7) and (8), The driving star wheel (7a) and the driving belt (7b) of the setting device (7) are moved to the left outer side by the moving device (10), and the meshing state becomes shallower. Become. The chopped cereals are transferred through this widened meshing part.

  In a second aspect of the present invention, the moving device (10) for moving the left scratching device (7) includes the left support shaft (11a) mounted in the left support fixing frame (11), and the left support shaft (11a). The harvesting device for combine harvester according to claim 1, characterized in that it is provided to move by means of a telescopic damper device (12a) installed in the fixed frame (11).

  When a large amount of cereal is scraped between the left and right scraping devices (7) and (8), the left supporting and fixing frame (10) of the moving device (10) for moving the left scraping device (7) ( 11) The left support shaft (11a) provided in the interior of the left support shaft (11a) is operated in a compressed state by the telescopic damper device (12a) provided in the left support fixed frame (11), and the left support shaft (11a). Becomes a shortened state, and the stirrer star foil (7a) of the left scoring device (7) and the scoring belt (7b) are moved to the left outer side, 8a) and the engagement belt (8b) become shallower, and the engagement portion becomes wider.

  According to a third aspect of the present invention, the left support shaft (11a) is provided to move by the compression spring (12b) provided in the moving device (10) for moving the left picking device (7). The harvester of a combine harvester according to claim 1 or 2, characterized in that.

  When a large amount of cereal is scraped between the left and right scraping devices (7) and (8), a compression spring provided on a moving device (10) for moving the left scraping device (7) ( 12b), the left support shaft (11a) is moved to the left outer side, the staring wheel (7a) of the left picking device (7) and the picking belt (7b) are moved to the left outer side, and the right The meshing state between the staring wheel (8a) of the scraping device (8) and the scraping belt (8b) becomes shallow, and the meshing portion becomes wide.

  In the first aspect of the invention, the left and right picking devices (7) and (8) for picking up and transferring the grains to be cut, the starfoil (7a) and (8a), 7b), a moving device (10) is provided for moving the staring wheel (7a) of the left rake device (7) and the rake belt (7b) to shallow the meshing state with (8b). As a result, the meshing portion is widened, thereby preventing the occurrence of the chopping of the chopped cereal, the clogging of the pestle, the spilling of the pestle, the breaking of the cereal, and the like. Further, it is possible to improve a large amount of cutting performance and prevent deformation and breakage of the driven star wheels (7a) and (8a) and the driven belts (7b) and (8b).

  In the invention according to claim 2, the moving device (10) is provided with a left supporting shaft (11a) and an expansion / contraction damper device (12a) provided on the left supporting fixed frame (11). By changing the meshing state of the left and right scratching devices (7) and (8) in (10), the high-speed cereal transfer performance of the left and right stirrer (7a), (8a ) And the left and right scooping belts (7b) and (8b), breakage prevention, and improvement of large amount of cutting performance can be achieved.

  According to a third aspect of the present invention, the moving device (10) is provided with a compression spring (12b), and the moving device (10) engages the left and right picking devices (7), (8). By changing the state shallowly and widening the meshing part, cost reduction and improvement of the high-speed squeeze transfer performance, left and right stir star foils (7a), (8a), left and right stir It is possible to prevent deformation and breakage of the belts (7b) and (8b) and to improve a large amount of cutting performance.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The front part of the traveling chassis 2 provided on the upper side of the traveling device 3 of the combine 1 is provided with a reaper 4 for harvesting and transferring cereals, and the upper left side surface of the traveling chassis 2 is supplied with the harvested cereals. The threshing machine 15 for threshing is placed. Left and right scoring devices 7 and 8 for scrambling and transferring a plurality of pulling devices 6 for pulling cereals to the front of the reaper 4 and one row to the rear and the other row And a cutting blade device 5c for cutting the scraped cereal and a root / tip transfer device 9a, 9b for transferring the root side and the tip side of the harvested cereal to the rear upper part, and the left side (driven) The left side scraping device 7 on the side) is provided with a moving device 10 for moving and operating the rear upper portion with the front lower portion as the rotation center (b). By the operation of the moving device 10, the staring star wheel 7 a of the left raking device 7, the raking belt 7 b, and the like can move to the left outer side, and the staring star wheel of the right raking device 8 on the right side (drive side). It is the structure which can change the meshing state with 8a and the take-in belt 8b shallowly. The left and right scraping devices 7, 8 and the moving device 10 will be mainly illustrated and described.

  As shown in FIG. 6 and FIG. 7, a traveling device 3 in which a pair of left and right traveling crawlers 3 a traveling on the soil surface is stretched is disposed below the traveling chassis 2 of the combine 1. It is the structure which mounted the threshing machine 15 on the upper side. The napped grains are harvested by the reaper 4 at the front part of the traveling chassis 2 and transferred to the upper rear part, and the threshing is carried out while being nipped and transferred by the feed chain 16a and the clamping bar 16b of the threshing machine 15. The grain that has been threshed and sorted is supplied into the grain storage tank 16c disposed on the right side of the threshing machine 15 and temporarily stored.

  As shown in FIGS. 6 and 7, in the front part of the traveling chassis 2, a narrow guide 5 a that separates the napped grains and each weed body 5 b, and each pulling device 6 that raises the napped grains, The left and right scavenging devices 7 and 8 of the culm scraping and transporting device 4a for scrambling and transferring the pulverized culm, the cutting blade device 5c for cutting the scrambled corn straw, and the harvested culm There is provided a reaping machine 4 including a root and tip transfer device 9a, 9b, etc., of a cereal scraping transfer device 4a that is nipped and transferred and delivered to a feed chain 16a of the threshing machine 5 and a holding rod 16b. The root transfer device 9a is configured to adjust the handling depth. The mower 4 is configured to move up and down with respect to the soil surface by a telescopic cylinder 13 that is hydraulically driven.

  A support pipe rod 14b provided at the upper end portion of the support rod 14a inclined from the front lower portion to the rear upper portion of the reaper 4 is rotatably supported by a support device 14c provided on the upper side surface of the traveling chassis 2. When the telescopic cylinder 13 is operated, the reaper 4 rotates up and down together with the support rod 14a.

  In the culm transfer route of the culm scraping transfer device 4a, a culm sensor 4b for detecting the presence or absence of supply of the culm to the threshing machine 15 by contacting the culm that is cut and transferred. Provided.

  As shown in FIG. 1 and FIG. 2, the left (driven side) left scraping device 7 has a staring star wheel 7 a as a shaft on an upper left support shaft 7 d that is pivotally supported on the left scratching case 7 c. The upper left pulley 7e is pivotally supported while being supported. Further, a lower left pulley 7h is pivotally supported on a lower left support shaft 7f pivotally supported on the left take-up case 7c. The upper left and lower left pulleys 7e and 7h are configured to span a scraping belt 7b having a scraping lug 7j mounted at a predetermined interval.

  Also, as shown in FIGS. 1 and 2, the right (driven side) right take-up device 8 has a take-up star wheel 8a on an upper right support shaft 8d provided to be supported by a right take-up case 8c. And an upper right pulley 8e are supported. Further, a lower right pulley 8h is pivotally supported on a lower right support shaft 8f pivotally supported on the right take-up case 8c. The upper and lower right pulleys 8e and 8h are configured to span a scooping belt 8b having a scooping lug 8j mounted at a predetermined interval.

  As shown in FIGS. 1 and 2, the front lower portion of the left scraping device 7 rotates the lower left support shaft 7f to the left support plate 17c provided on the left pulling pipe 17a on which the lower portion of the left pulling device 6 is mounted. As the center of movement (b), it is pivotally supported. Further, the rear upper part is provided with a moving device 10 to the upper left support shaft 7d. By the operation of the moving device 10, the left scraping device 7 rotates the left upper support shaft 7d at the rear upper portion to the left outer side with the lower left support shaft 7f at the lower front as the rotation center (b). Thus, the left scraping device 7 is configured to be pivoted to the left outer side.

  As shown in FIGS. 1 and 2, the lower front portion of the right scraping device 8 has a lower right support shaft 8 f attached to a right support plate 17 d provided on a right pulling pipe 17 b to which the lower portion of the right pulling device 6 is attached. The shaft is supported so as not to rotate. The rear upper part is mounted by a right support plate (not shown) provided on a right support pipe (not shown) provided on the right pulling pipe 17b so as not to rotate.

  The left rake device 7 has a large amount of cereals scraped between the left rake device 7 and the right rake device 8, and left, right rake left, right star wheels 7a, 8a, and left -When transferred to the upper part by the right take-up belts 7b and 8b and transferred to the vicinity of the meshing part, the upper left support shaft 7d part at the rear upper part is set to the left outer side with the lower left support shaft 7f at the front lower part as the center of rotation (A). The moving star 10 is rotated by the moving device 10 so that the staring star wheel 7a and the driving belt 7b of the left driving device 7 are connected to the driving star wheel 8a and the driving belt 8b of the right driving device 8. The meshing state becomes shallower, and the meshing portion becomes wider. The left side staring star wheel 7a is rotationally driven by the right side staring star wheel 8a, and the respective parts of the left side left scavenging device 7 are rotationally driven.

  Scratching of the left scavenging device 7 that shallows the meshing state between the staring wheels 7a and 8a of the left and right scoring devices 7 and 8 for scrambling and transferring the grains to be harvested. The star wheel 7a and the take-in belt 7b are rotated by the operation of the moving device 10 with the left lower support shaft 7f at the lower front part as the center of rotation (A) and the entire left take-up device 7 facing left outside. The meshing state of the driven starwheels 7a, 8a of the left and right scratching devices 7, 8 and the scraping belts 7b, 8b becomes shallower and the meshing portion becomes wider. It is possible to prevent the occurrence of cereal trough cutting, cereal clogging, grain spillage, and cereal breakage. Moreover, the cutting performance of a large amount of cereals can be improved, and the deformation and damage of the driven star wheels 7a and 8a and the driven belts 7b and 8b can be prevented.

  As shown in FIG. 1, the moving device 10 for moving the left (driven side) left scraping device 7 to the left outer side is provided on the left support fixing frame 11 on the mounting plate 17f attached to the left support pipe 17e. The support plate 11b is mounted with bolts and nuts. A left support shaft 11a is movably mounted on the left support fixing frame 11, and an inner end is attached to the upper left support shaft 7d. Further, the left support fixing frame 11 is provided with a telescopic damper device 12a on the left outer side of the left support shaft 11a. The left support shaft 11a is moved to the left outer side via the telescopic damper device 12a, and the left picking device 7 is rotated to the left outer side. The left and right picking devices 7 and 8 have a configuration in which the meshing state of the staring foils 7a and 8a and the scraping belts 7b and 8b becomes shallow and the meshing portion becomes wide. Further, as shown in FIG. 1, the moving device 10 is configured to be provided substantially directly beside in the left-right direction. Alternatively, as illustrated in FIGS. 4 and 5, the moving device 10 is configured to be inclined at a predetermined angle from the rear outer side toward the front inner side.

  When a large amount of pestle is squeezed between the left and right rake devices 7 and 8 and transferred to the rear upper part, the left rake device 7 movably provided is a large amount of cereal being transferred. Pushed with the scissors, the left support shaft 11a of the moving device 10 is pushed in the left outer direction, the telescopic damper device 12a is in a compressed state, and the entire left scratching device 7 is rotated and moved in the outer direction. In this configuration, the engagement state of the engagement star wheels 7a, 8a and the engagement belts 7b, 8b of the left and right entry devices 7, 8 is shallow, and the engagement portion is widened.

  The moving device 10 for rotating the left scraping device 7 to the left outer side is provided with a left support shaft 11a and an expansion / contraction damper device 12a provided in the left support fixing frame 11, and the moving device 10 is provided with a left / right support. By changing the meshing state of the scraping devices 7 and 8, the improvement of the massing performance and cutting performance of the mass cereals, the left and right staring star wheels 7a and 8a, and the left and right stirring belts 7b, The deformation and damage prevention of 8b can be achieved.

  As shown in FIG. 5, the moving device 10 that moves the left scraping device 7 to the left outer side is provided with a compression spring 12b between the left support fixing frame 11 and the left support shaft 11a. The left support shaft 11a is moved to the left outer side via the spring 12b, and the left scraping device 7 is rotated to the left outer side. The left and right take-up star wheels 7a and 8a of the left and right take-up devices 7 and 8 and the left and right take-up belts 7b and 8b are brought into a shallow engagement state, and this engagement portion is widened. The compression spring 12b is provided so as not to drop off.

  The moving device 10 for rotating the left scraping device 7 to the left outer side is provided with a compression spring 12b between the left support fixing frame 11 and the left support shaft 11a. By changing the meshing state of 7, 8 shallowly and widening the meshing part, the cost of the moving device 10 could be reduced. Further, it is possible to improve the scraping performance and cutting performance of a large amount of cereals and to prevent deformation and breakage of the left and right stirring star wheels 7a and 8a and the left and right stirring belts 7b and 8b.

  As shown in FIG. 1, left and right guide rods 18 a and 18 b made of a resilient material or the like for guiding the cereal to the left and right scratch star wheels 7 a and 8 a of the left and right scratching devices 7 and 8, and the left auxiliary A guide rod 18c is provided. Further, the weed pipe 5d in the central portion is provided with a large separation rod 19a and a small separation rod 19b which are substantially rhombus-shaped and made of an elastic material such as a round material or a plate material, with a predetermined interval in the vertical direction. .

  As shown in FIG. 8, the moving device 10 that moves the left scraping device 7 to the left outer side includes a leaf spring 20 made of a leaf spring material between the left support fixing frame 11 and the left support shaft 11 a. Is provided. The left spring device 7 is rotated and moved to the left outer side, and the leaf spring 20 is engaged with the left and right driven star wheels 7a and 8a and the left and right driven belts 7b and 8b. In a normal state where the meshing portion is deformed into a substantially circular shape and the meshing state is deep and the meshing portion is narrowed when the portion is widened, an elliptical shape is provided. In the above-described configuration, as shown in FIG. 9, the thickness of the right side (driving side) scratching star wheel 8a is set to be a predetermined dimension thicker than the thickness of the left side (driven side) scratching star wheel 7a. It is a configuration.

  Thereby, the cost reduction of the said moving apparatus 10 can be aimed at. Further, it is possible to improve the scraping performance and cutting performance of the mass cereal and to prevent the left and right scraping star wheels 7a and 8a and the left and right scraping belts 7b and 8b from being deformed and damaged. Moreover, the shift | offset | difference at the time of the re-meshing of the left and right taking star wheels 7a and 8a can be prevented.

  In the configuration shown in FIG. 10, the thickness of the left side (driven side) of the left and right picking devices 7 and 8 is as follows: This is a configuration provided with a predetermined dimension thicker than the thickness of 8a.

Thereby, the shift | offset | difference at the time of the re-meshing of the staring star foils 7a and 8a on the left and right sides can be prevented.
As shown in FIG. 12, a connecting plate 21 is provided between the upper left and lower left support shafts 7d and 7f of the left scraping device 7, and an "ON"-"OFF" type switch 21a is provided on the left support fixing frame 11. Is provided. When the left scraping device 7 is pivoted to the left outside to the maximum, the switch 21a is pushed by the connecting plate 21, and when it is in the “ON” state, the “ON” state causes clogging of the cereal grains being transferred. Is detected, and the reaper 4 is automatically stopped by this detection. Or it is the structure which decelerates the transfer speed | rate of a corn straw, and makes the layer thickness of the corn straw to transfer thin. At this time, the traveling vehicle speed of the combine 1 is automatically changed to a low vehicle speed.

  Thereby, the deformation | transformation and damage of the various components of the said left and right raking device 7 and 8 can be prevented. Moreover, the overload of the threshing machine 15 can be prevented by making the layer thickness of the cereals to be transferred thinner.

  As shown in FIGS. 6 and 7, an operation device 22a for starting and stopping the combine 1, and adjusting each part, etc., and a cockpit 22b are provided at the front portion on the grain storage tank 16c side. The engine 23 is mounted on the lower side of the cockpit 22b, and the grain storage tank 16c is disposed in the rear part.

  A potentiometer type vehicle speed sensor 24b for detecting the traveling vehicle speed is provided in the transmission path of the transmission mechanism 24a in the traveling mission case 24 mounted on the front end portion of the traveling chassis 2. ing.

  On the rear side of the grain storage tank 16 for discharging the grains stored in the grain storage tank 16c to the outside of the machine, a discharge support cylinder 25 having a vertical transfer spiral 25a is mounted so as to be pivotable in a substantially vertical posture. At the upper end of the discharge support cylinder 25, a discharge auger 26 is provided that is extendable and retractable. The discharge auger 26 includes a discharge spiral 26 a that extends the length of the combine 1 in the longitudinal direction of the combine 1. It is the structure arrange | positioned in the front-back direction so that rotation and turning right and left are possible.

  It is provided above the inlet funnel 15a of the threshing machine 15. The dust-proof cover device 27 made of a resin material is rotated and moved to the upper part of the cockpit 22b, and is used as a sun visor for sun protection. As shown in FIGS. 13 to 16, the dust-proof cover device 27 is provided on a resin material cover 27a, an arm 27b that supports the cover 27a, and the arm 27b. The cover 27a and the arm 27b are rotated. The rotating lever 27c that is operated to move is configured.

  By the turning operation of the turning lever 27c, the dust protection cover device 27 on the upper side of the inlet funnel 15a is turned to the upper side of the cockpit 22b, and the day of the operator who is seated on the cockpit 22b and operates for driving. It is the structure used as the sun visor of the cover for protection.

  As shown in FIGS. 13 to 16, the arm 27 b of the dust-proof cover device 27 is configured to be able to rotate and be fixed approximately 90 degrees and is attached to the rear portion of the cover 27 a made of a resin material. The pivot point of the arm 27b is configured between the cockpit 22 and the inlet funnel 15a. Further, a rotation lever 27c is provided in the vicinity of the rotation fulcrum of the arm 27b to assist the switching operation.

  As shown in FIG. 13, a mounting plate 27d is fixedly provided on the upper portion of the arm 27b, and the cover 27a is attached to the mounting plate 27d with bolts, nuts, and the like. The front part is mounted so as to be adjustable up and down with the center of rotation.

  As a result, for the sunshade of the driver who sits on the cockpit 22b by rotating the dustproof cover device 27 provided on the upper part of the inlet funnel 15a of the threshing machine 15 to the upper part of the cockpit 22b. By using a sun visor, a sun visor can be easily formed with a simple configuration. Moreover, the cost is reduced by sharing. Further, by providing the rotation lever 25c, the rotation movement operation is easy, and the sunshade can be surely secured by rotating the cover 27a up and down.

Enlarged plan view of the left and right scavenging device of the reaper Enlarged side view of the left and right scavenging device of the reaper Expanded plan view of the left and right scavenging device parts of the reaper at standard time Enlarged plan view when moving the left rake device of the reaper to the maximum left outside Enlarged plan view of the left and right scavenging device of the reaper Combine left side side view Overall front view of combine Enlarged plan view of the left and right scavenging device of the reaper Enlarged front view of left and right stirrer star foils for left and right stirrers Enlarged plan view of the left and right scavenging device of the reaper Enlarged front view of left and right stirrer star foils for left and right stirrers Enlarged plan view of the left and right scavenging device of the reaper Expanded side view of the dustproof cover device of the combine Expanded front view of the dust-proof cover device of the combine Top view of the combine dust-proof cover device attached to the threshing machine Top view when turning to the cockpit of the combine dustproof cover device

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Running chassis 4 Mowing machine 5c Cutting blade device 6 Pulling device 7 Left scratching device 7a Scratching star wheel 7b Scratching belt 8 Right scratching device 8a Scratching star wheel 8b Scratching belt 9a Root transfer device 9b Tip transfer device 10 Moving device 11 Left support fixing frame 11a Left support shaft 12a Telescopic damper device 12b Compression spring A Rotation center

Claims (3)

  The reaping machine (4) for cutting and transferring the cereals at the front part of the traveling chassis (2) to the upper rear part includes a plurality of pulling devices (6) for raising the cereals at the front part, and a strip on one side to the rear side. Left and right scratches on both the left and right sides, each of which is made up of each of the stir star wheels (7a), (8a) and each of the screed belts (7b), (8b), etc. The cutting device (7), (8), the cutting blade device (5c) for cutting the chopped cereal, and the root transfer device (9a) for transferring the root side and the tip side of the cutting cereal to the rear upper part The tip transfer device (9b) and the left (driven side) left scraping device (7) are provided with a moving device (10) and the like for moving and operating the rear upper portion with the front lower portion as the rotation center (b). In the configuration, the operation of the moving device (10) causes the left staring device (7) to have a staring star wheel (7a) and a driving belt (7b). Etc. can be moved to the left outer side, and is provided so as to make the meshing state of the staring wheel (8a) and the scraping belt (8b) of the right (driving side) right scratching device (8) shallow. Combine harvester's grain scraper.   The moving device (10) for moving the left raking device (7) includes a telescopic damper having a left support shaft (11a) mounted on the left support fixing frame (11) mounted on the left support fixing frame (11). 2. Combine harvester scraping device according to claim 1, characterized in that it is provided for movement by means of a device (12a).   The left support shaft (11a) is provided to move the left support shaft (11a) by a compression spring (12b) provided in a moving device (10) for moving and operating the left scraping device (7). Item 3. A combine harvesting device according to Item 2.

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