JP2022042538A - Combine harvester - Google Patents

Abstract

To provide a combine harvester which allows a worker to perform maintenance work without forcing an unnatural posture to the worker when arranging a grain tank being rotatable around a revolving center of a grain discharge auger for providing a space for servicing and maintenance work between a threshing device arranged side by side to a machine frame, and forming a maintenance hole (hole for servicing and maintenance work of the tank itself) while forming the hole of a minimum necessary size.SOLUTION: A grain tank 26 includes an inclined wall for collecting grains to a horizontal spiral side of a grain discharge auger arranged below the grain tank, and an upright wall continuing to an upper part of the inclined wall. A maintenance hole 67c whose bottom center faces the ground when the grain tank 26 is rotated to an outer side direction and opened is formed across the inclined wall and the upright wall.SELECTED DRAWING: Figure 6

Description

The present invention relates to a combine for harvesting grains by cutting rice, wheat and the like, and more particularly to a combine provided with a grain tank for storing the harvested grains.

The combine, which harvests grains by cutting rice and wheat, has a grain tank equipped with a threshing device on the frame of the machine equipped with a traveling device at the bottom, and the grain tank stores the grain. It is equipped with a grain harvester that discharges the rice to the outside of the machine. Further, the grain tank is rotatably provided around the turning center of the grain discharging auger in order to provide a space for maintenance and maintenance and inspection between the grain tank and the threshing device attached to the machine frame.

Therefore, if the Glen tank is changed from the storage position attached to the threshing device to the maintenance position opened by rotating it outward, a space for maintenance and maintenance inspection will be created between the threshing device and the storage position, and this space will be used. For example, the operator may open the cleaning port of the threshing device or the reducing device provided on the Glen tank side of the threshing device to remove grains and straw debris, or remove the cover covering the outer periphery of the processing cylinder to remove the cover in the processing chamber. Maintenance such as removal of straw debris and attachment / detachment of processing nets can be performed. Also, when the Glen tank is changed to the maintenance position, the spiral cover that covers the lower side of the horizontal spiral of the grain discharge auger comes off from the top of the fuselage frame to the outside.

Therefore, if the spiral cover is removed without being disturbed by the machine frame, the grains and dust remaining on the spiral cover can be removed. However, dust and grains adhering to the upper part of the grain tank cannot be removed only by opening the spiral cover. In addition, the flow plate provided above the horizontal spiral can adjust the flow rate of the grain discharge auger by taking it in and out. However, there is a problem that it is difficult to perform the adjustment work because the flow plate is taken in and out by opening the gutter for taking out grains provided in the Glen tank and putting an arm in this gutter and groping.

On the other hand, the maintenance position where the Glen tank is rotated as described above and the front side of the tank protrudes to the right outside of the fuselage frame to open the rear side of the engine and the right side of the threshing device, and the whole rear of the engine. In the combine that can be repositioned to the work position stored so as to be located in, a large opening that opens most of the right wall surface is provided on the right side wall on the lateral outer side of the Glen tank, which is a large scale. It is disclosed that a worker enters the grain tank through an opening to perform maintenance or cleaning (see Patent Document 1).

In addition, a Glen sensor that measures the amount of storage in the Glen tank is installed at the rear left side of the Glen tank at a position behind the cleaning port. Conventionally, the Glen sensor was also installed on the cleaning port, so the cleaning port lid plate can be removed. However, according to this example, it is easy to open and close the cleaning port because there is nothing extra on the cleaning port. Further, it is disclosed that by providing flange pieces on the upper and lower sides of the cleaning port and on the rear opening edge portion, the strength of the Glen tank itself is increased while the cleaning port has a simple shape (see Patent Document 2).

Japanese Unexamined Patent Publication No. 2010-12487 Japanese Unexamined Patent Publication No. 2016-154494

As mentioned above, if a grain tank is rotatably provided around the turning center of the grain discharge auger in order to provide a space for maintenance and maintenance and inspection between the threshing device attached to the machine frame, it will be between the threshing device and the grain removal device. A space for maintenance and maintenance is created, and the operator can easily perform maintenance of various devices installed on the grain tank side of the threshing device by using this space. However, the maintenance of the Glen tank itself has only the advantage that the spiral cover can be easily removed, and there is room for improvement.

Further, in the above-mentioned Patent Document 1, a large opening for opening most of the right wall surface is provided on the right side wall on the lateral outer side of the Glen tank, and the operator can open the opening during large-scale maintenance or cleaning. It is described that the work is done by entering the Glen tank. However, if a large opening that opens most of the right wall surface is provided on the right side wall on the lateral outer side of the Glen tank, it is necessary to connect a large lid plate that closes this opening with a large number of connecting bolts, and the lid. It takes a considerable amount of time to attach and detach the plate, and the presence of the lid plate is a factor that impairs the appearance of the combine from the lateral outer side of the machine body.

Moreover, although a large opening is preferable for maintenance, the strength of the right wall having a large opening as a single unit is reduced, which adversely affects the material handling in the Glen tank manufacturing base and the distribution base of the right wall. Even when completed as a Glen tank, there is concern that the strength of the right wall will be insufficient. In addition, when a worker enters the Glen tank through an opening, it is difficult to enter the Glen tank through an opening that is considerably high from the ground, or the narrow bottom of the Glen tank that houses the screw conveyor. There is a problem that it is generally difficult to work on top of it.

In that respect, in the above-mentioned Patent Document 2, since the cleaning port is provided on the left side of the grain tank, the cleaning port can be provided without impairing the appearance of the combine, and the cleaning port can be provided on the upper and lower and rear opening edges of the cleaning port. By providing the flange piece, it is possible to increase the strength of the grain tank itself while making the cleaning port a simple shape. However, this cleaning port also has a large opening that adversely affects the material handling of the left wall with this opening as a single unit, and the large lid that closes it must be attached and detached with a large number of bolts, and it takes time to attach and detach the lid. Will be required considerably.

Further, when working by entering the inside of the Glen tank from this cleaning port, it is difficult to perform the work by standing on the narrow bottom of the Glen tank accommodating the screw conveyor as in Patent Document 1. .. Therefore, it is necessary to clean the inside of the tank while putting the upper body into the cleaning port from the outside of the upright left wall, which is a difficult task due to the forced posture.

Therefore, in view of the above problems, the present invention is rotatably provided around the turning center of the grain discharging auger in order to provide a space for maintenance and maintenance and inspection between the threshing device and the threshing device attached to the machine frame. When providing a maintenance hole (hole for maintenance and maintenance) to maintain the Glen tank and its tank itself, maintenance work is performed without forcing the operator to take an unreasonable posture while providing a hole of the minimum required size. The challenge is to provide a combine that can do this.

In order to solve the above-mentioned problems, the combine of the present invention can rotate around the turning center of the grain discharge auger in order to provide a space for maintenance and maintenance and inspection between the combine harvester and the threshing device attached to the machine frame. The grain tank to be provided is provided with a sloping wall for collecting grains on the horizontal spiral side of the grain discharge auger provided at the lower part of the tank, and an upright wall connected to the upper part of the sloping wall, and the grain tank is placed outward. It is characterized in that a maintenance hole, which faces the ground directly below when it is rotated and opened, is formed so as to straddle the inclined wall and the upright wall.

Secondly, the combine of the present invention is characterized in that the maintenance hole is formed so as to straddle an inclined wall and an upright wall inside the machine body facing the threshing device side. Further, the combine of the present invention is thirdly formed as a side plate formed by bending the inclined wall and the upright wall of the storage portion connecting the maintenance hole to the upper part of the gutter portion accommodating the horizontal spiral of the grain auger. It is characterized by being provided by piercing.

Fourth, the combine of the present invention is characterized in that the maintenance hole is covered with a hole cover formed by bending along the inclined wall and the upright wall of the side plate. Fifth, in the combine of the present invention, the maintenance hole is formed in a substantially rectangular shape long in the axial direction of the horizontal spiral of the grain discharge auger, and the upper body is inserted from the maintenance hole and provided above the horizontal spiral. It is characterized by being able to adjust the flow rate of the board.

According to the combine of the present invention, the inside of the grain tank is rotatably provided around the turning center of the grain discharging auger in order to provide a space for maintenance and maintenance and inspection between the combine and the threshing device attached to the machine frame. A sloping wall for collecting grains on the horizontal spiral side of the grain harvester provided at the bottom of the sloping wall and an upright wall connected to the upper part of this sloping wall are provided, and when the grain tank is rotated outward and opened. A maintenance hole directly below the ground facing the ground is formed so as to straddle the inclined wall and the upright wall.

Therefore, when the Glen tank is rotated outward to open it when performing maintenance inside the Glen tank, the area directly under the maintenance hole faces the ground, where the worker stands on the ground without being disturbed by the machine frame or the like. The hole cover can be removed, and the operator can put the upper body into the Glen tank from the maintenance hole while bending slightly, and for example, dust and grains adhering to the inner wall of the tank can be swept off with a brush or the like. Therefore, the worker can finish the work smoothly without being forced into an unreasonable posture when performing the maintenance work.

When the worker puts the upper body in or out of the tank, he first puts his head in the opening at a relatively high position corresponding to the upright wall of the maintenance hole, and then at the low position corresponding to the inclined wall. The upper body may be inserted into a certain opening, or the upper body may be removed from the tank in the reverse procedure, and the upper body can be easily taken in and out as compared with the case where a maintenance hole is provided only in a low inclined wall, for example. In addition, the opening corresponding to the inclined wall for inserting the upper body is close to the horizontal spiral of the grain discharge auger, so the worker puts the upper body deep in the tank under a stable scaffolding on the ground and puts the upper body in the inner wall of the tank. Can be made easier to access.

Further, the maintenance hole may be provided with a relatively small hole that allows the operator to comfortably insert the upper body into the tank so as to straddle the inclined wall and the upright wall. It suppresses the decrease in the strength of the wall, does not adversely affect the material handling of the side plate that provides the inclined wall or the upright wall as a single unit, and makes the hole cover that closes the maintenance hole smaller, and holes with less bolts. It can be expected that the cover can be attached and detached in a short time.

Further, according to the combine of the present invention, the maintenance hole is formed so as to straddle the inclined wall and the upright wall inside the machine body facing the threshing device side. Therefore, the Glen tank is rotated outward to open it to perform maintenance inside the Glen tank, and then maintenance of various devices installed on the Glen tank side of the threshing device is performed, or conversely, maintenance on the threshing device side is performed first. It is possible to eliminate unnecessary procedures, improve the efficiency of total maintenance of each part, and finish the maintenance work promptly. Moreover, the maintenance hole is formed across the inclined wall and the upright wall inside the fuselage, and the hole cover that closes it is also provided inside the fuselage, so the presence of the hole cover is the appearance of the combine from the side outside the fuselage. Does not interfere with.

Further, according to the combine of the present invention, the maintenance hole is drilled into a side plate integrally formed by bending an upright wall and an inclined wall of a storage portion connecting the maintenance hole to the upper part of a gutter portion accommodating a horizontal spiral of a grain auger. prepare. Therefore, when a maintenance hole is provided in the gutter part that is the lower part of the grain tank and accommodates the horizontal spiral of the grain discharge auger, a hole is made in the gutter part where a large number of reinforcing plates are provided to ensure the strength. The structure becomes more complicated to ensure. However, it is sufficient to make a hole in the side plate of the storage part, which does not require as much strength as the gutter part, without being hindered by a reinforcing plate or the like, and only one hole is made across the bent inclined wall and the upright wall of the side plate. Therefore, it is possible to suppress the cost increase without complicating the structure while preventing the strength of the side plate of the storage portion from being lowered.

Then, according to the combine of the present invention, the maintenance hole is covered with a hole cover formed by bending along the inclined wall and the upright wall of the side plate. Therefore, it is possible to prevent the storage amount of grains stored in the Glen tank from being reduced by the new maintenance hole and the addition of the hole cover, and to maintain the storage amount up to that point. In addition, the hole cover formed by bending has increased strength and can be easily handled as a single unit.

Further, according to the combine of the present invention, the maintenance hole is formed in a substantially rectangular shape long in the axial direction of the horizontal spiral of the grain discharge auger, and the upper body is inserted from the maintenance hole and the flow plate is provided above the horizontal spiral. Allows you to adjust the flow rate. Therefore, when performing maintenance, the operator adjusts the flow rate of the flow plate by inserting the upper body into a substantially rectangular hole so as to face the horizontal spiral axis, following a maintenance hole that is long in the axial direction of the horizontal spiral. be able to. Further, the maintenance hole can be made into a relatively small maintenance hole having a length slightly larger than the shoulder width of the worker.

It is a right side view of the combine to which this invention is applied. It is a left side view of the combine. It is a plan view of a combine. It is a side view explaining the mounting structure of a grain tank. It is a top view which shows the state which opened the grain tank in a maintenance position. It is a perspective view which shows the state which puts the upper body into a tank from a maintenance hole and performs maintenance. It is a perspective view of a Glen tank. It is a left side view of the Glen tank. It is a vertical sectional view of a Glen tank. It is a vertical sectional view of a gutter part.

An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the 6-row harvesting self-removing combine harvester 1 that harvests grains by cutting rice and wheat is a traveling frame 3 below the machine frame (body) 2 that is framed in a substantially rectangular shape. The left and right crawler traveling devices 4 are provided via the above. The left and right crawler traveling devices 4 include a drive sprocket 6 attached to a drive shaft extending from the left and right of the transmission case 5, an idle wheel 7 and a track roller 8 pivotally supported by the traveling frame 3, and rubber wound around them. A crawler 9 is provided.

Further, a driving frame 10 which is framed in a substantially rectangular parallelepiped shape is integrally connected to the front right side of the machine frame 2 in the forward direction of the machine, and the driving frame 10 and the rear engine room A are steered upward toward the front part. A unit 11 is provided. The control unit 11 has a driver's seat behind the floor, a front console (front operation panel) on the front of the floor, and a side console (side operation panel) on the left side of the floor and the driver's seat. Further, the cabin 12 covers them.

Further, the cutting portion 13 is provided so as to be able to move up and down from the left front portion of the machine frame 2 to the front of the control portion 11 by a hydraulic cylinder (not shown). Then, the cutting section 13 divides the standing hair culm in the field into a cut grain culm and an uncut grain culm by a weed body 14 and a narrow guide 15 provided at the lower part of the front end thereof, and enters between the left and right weed culms 14. The harvested grain culm is raised by a raising device 16 provided with a raising claw, and then the stock of the grain culm is gathered by a scraping device composed of a scraping belt with protrusions and a star wheel 17 by a reciprocal cutting blade device 18. Disconnect.

Further, the grain culms cut and cut by the cutting blade device 18 are sent to the rear by the star wheel 17 of the scraping device, and the grain culms sent to the rear are handed over to the stock transfer devices provided in the left and right and the center. And then transport it further backwards. The terminal portion of the stock source transport device provided in the center faces the confluence portion provided in the middle of the transport path of the right stock source transport device, and the grain culm transported by this middle stock source transport device is the right stock at the confluence portion in the middle. It merges with the grain culm transported by the original transport device, and is subsequently taken over by the right stock transfer device.

On the other hand, the end of the stock transfer device provided on the left side faces the end of the transfer path of the right stock transfer device, and the culm transported by this left stock transfer device is the grain transported by the right stock transfer device. It merges with the culm at the confluence, which is the end of both transport devices. Further, the merged grain culms are taken over by the handling depth transport device 19 having the starting end portion facing both of the confluence portions, and are further conveyed rearward and upward.

Then, the grain culm handed over to the handling depth transport device 19 is handed over to the threshing feed chain 20 from the terminal portion of the handling depth transport device 19 via the auxiliary transport device. Up to this point, the transport route on the stock root side of the grain culm has been mainly described, but the tip side of the grain culm is provided on the right stock root transport device, the handling depth transport device 19, and the tip transport on the upper side of the auxiliary transport device. The device 21 is locked to the transport claws attached to the transport chains of the left culm transfer device and the middle culm transfer device provided above the left culm transfer device and the middle culm transfer device.

Further, the threshing section is provided mainly on the threshing device 22 on the left side of the machine frame 2 behind the cutting section 13, and a handling room and a processing room are provided below the cylinder cover 23 covering the upper part of the threshing device 22. Among them, the handling room is provided with a threshing feed chain 20 and its holding rail 24 for transporting the grain culm conveyed from the cutting section 13 along the handling opening, a handling cylinder provided with the handling teeth, and a receiving net thereof. In addition, the processing chamber is installed in the handling chamber so as to face the rear of the machine from the rear end tip side of the handling cylinder, and the processing cylinder and its processing cylinder for processing straw waste mixed with grains that could not be threshed in the handling chamber. Provide a processing network.

On the other hand, a sorting room will be provided below the handling room and the processing room. This sorting chamber is provided with a swinging flow plate, No. 1 spiral and No. 2 spiral, a wall insert fan, a suction fan, etc., and swings the grains leaked from the receiving net of the handling room or processing room. Sorted on a flow plate, the sorted grains are transferred from the first spiral to the grain tank (grain tank) 26 via the grain frying device 25, and the second grain mixed with straw waste etc. is transferred from the second spiral to the second spiral. Return to the rocking flow plate via the turnover device.

Further, the straw debris reaching the end of the rocking flow plate, the straw debris captured by the suction fan, or the straw debris discharged from the end of the processing cylinder is discharged to the outside of the machine behind the threshing device 22. Further, the culm discharged from the handling room after the threshing process is completed is transported toward the disc type cutter 28 by the straw discharging transport device 27, and further, the disc type cutter 28 is transported by the straw discharging transport device 27. Shred the culm and release it as cut straw to the site where it was cut.

The above-mentioned Glen tank 26 is composed of a diesel engine provided behind the control unit 11, a radiator for cooling the cooling water of the engine, an air cleaner for supplying clean combustion air to the engine, an exhaust gas aftertreatment device, and the like. It is provided further behind the driving unit 29 to temporarily store the grains transferred by the grain raising device 25 of the threshing device 22. Further, when the grain is full in the grain tank 26, a grain discharge auger 30 is provided to discharge the grain from the grain tank 26 and discharge it to a container or the like outside the machine.

Further, as shown in FIG. 4, the grain discharge auger 30 has an input gear case 31 provided with a drive hydraulic motor (not shown) fixed to the rear right side of the machine frame 2 and is driven on the upper part of the input gear case 31. The case 32 is rotatably supported. Further, a lower part of the rear wall of the Glen tank 26 is attached to the front part of the drive case 32, and the first vertical pipe 33 is rotatably supported on the upper part of the drive case 32. Further, the upper portion of the first vertical pipe 33 is rotatably supported by the auger stay 34 standing on the machine frame 2 via the metal 35.

Further, the holder 36 is attached to the upper part of the first vertical pipe 33 so as to be relatively rotatable, and the holder 36 is attached to the upper part of the rear wall of the grain tank 26. Further, a gear body is fixedly fixed on the outer periphery of the first vertical pipe 33 near the lower portion, and a swivel motor 37 provided with a drive gear that meshes with the gear body is attached to the auger stay 34 via the bracket 38. On the other hand, one of a pair of elbow-shaped gear cases 39 and 40 that are rotatably connected to each other is attached to the upper portion of the first vertical pipe 33, and the second vertical pipe 41 is attached to the other gear case 40. prepare.

Then, as shown in FIGS. 8 to 10, a horizontal spiral 42 is horizontally provided on the bottom of the drive case 32 and the grain tank 26 and rotatably supported via a bearing. Further, a vertical spiral 43 is provided in the drive case 32, the first vertical pipe 33, the gear cases 39, 40, and the second vertical pipe 41, and the vertical spiral 43 is rotatably supported via a bearing. Further, these horizontal spirals 42 and vertical spirals 43 are configured to be driven by a drive hydraulic motor via a gear transmission mechanism provided in the gear case 31, the drive case 32, and the gear cases 39, 40, thereby Glenn. The grains in the tank 26 are transferred by the horizontal spiral 42 and the vertical spiral 43, and the grains are discharged to the outside of the machine from the discharge port 44 provided at the tip of the second vertical pipe 41.

Further, in that case, when the hydraulic cylinder 45 provided between the gear case 39 and the second vertical pipe 41 is operated, the second vertical pipe 41 is undulated from the posture stored above the combine 1 to the turning / discharging posture (upright). Can be moved up and down). Further, when the above-mentioned swivel motor 37 is operated, the first vertical pipe 33, the gear cases 39, 40, and the second vertical pipe 41 are provided in the first vertical pipe 33 which is the swivel center of the grain discharge auger 30. It can be integrally rotated clockwise or counterclockwise around the axis of 43, whereby the grain discharge auger 30 can be swiveled over the storage position and the discharge position.

On the other hand, as described above, the Glen tank 26 is subsequently attached to the holder 36 and the drive case 32 at the top and bottom of the wall. Therefore, the Glen tank 26 is rotatably provided around the turning center of the grain discharge auger 30 (the axis of the vertical spiral 43 provided in the first vertical pipe 33), whereby the Glen tank 26 is provided. As shown in FIG. 3, the position near the front part of the machine is rotated toward the inside of the machine body to store the grains attached to the threshing device 22 provided on the machine body frame 2, and the position near the front part is set as shown in FIG. It can be rotated outward to a maintenance position where a space for maintenance and maintenance is provided between the threshing device 22 and the driving unit 29.

The outline of the combine 1 and the rotation structure of the grain discharge auger 30 and the gutter tank 26 have been described above. Next, the maintenance of the gutter tank 26 itself will be described. First, the gutter tank 26 is shown in FIGS. 7 to 10. As described above, the front wall, the rear wall, and the left and right inclined side walls formed of the front wall and the rear wall made of steel plate, and the lower side gutter portion 46 formed in an inverted triangular columnar shape, and the front wall, the rear wall, and the right side wall above the gutter portion 46. The storage section 47 near the upper part, which is formed in a substantially rectangular parallelepiped shape on the left side wall and the ceiling wall, is integrally connected with bolts to form a tank for storing grains.

Then, the gutter portion 46 accommodates the horizontal spiral 42 inside the horizontal spiral 42 so that its axis is in the front-rear direction, and the front end portion of the horizontal spiral 42 rotates on the front mounting plate 49 to be mounted on the front wall 48 via a bearing. Freely support the shaft. Further, the rear end portion of the horizontal spiral 42 is pivotally supported by the drive case 32, and the gutter portion 46 is attached to the drive case 32 via the rear mounting plate 51 which is subsequently attached to the wall 50. Further, a spiral cover 52 that covers the lower part of the horizontal spiral 42 is rotatably attached to the lower end of the left inclined side wall 53 via a hinge, and the right end portion of the spiral cover 52 is attached to the right inclined side wall 54 with a plurality of wing nuts. It can be opened and closed freely.

Further, a hole 54a is provided near the lower portion of the right inclined side wall 54, and a shutter 55 and a shooter 56 for closing the hole 54a are provided to form a higuchi. Allow it to be taken out into a bag. Further, as shown in FIG. 4, the right inclined side wall 54 is provided with front and rear brackets 54b for detachably attaching the tank lower cover 57 covering the outer side of the gutter portion 46 and brackets 54c for attaching the tank fixing lever 58.

Further, the tank lock lever 59 is attached to the front mounting plate 49 to be mounted on the front wall 48 so as to be pullable against the spring 60 and rotatably upward, and the tank lock lever 59 is fixed on the machine frame 2. It is freely engaged and detached on the upright piece of the plate 2a. Further, a bearing 61 is pivotally supported under the front mounting plate 49, and the bearing 61 is placed on the plate 2a to support the front side of the grain tank 26 on the machine frame 2. Further, when the grain tank 26 is pulled to the maintenance position by putting a hand in the handle 49a formed on the front mounting plate 49, the bearing 61 rotates but supports the grain tank 26, so that the grain tank 26 is lightly rotated. be able to.

Since the load of grains, constituent members of the storage portion 47, etc. acts on the girder portion 46, it is necessary to increase the strength. For example, a large number of reinforcing plates B in the front-rear direction are fixed to the left inclined side wall 53 thereof. A reinforcing plate C in the vertical direction is fixed to the right inclined side wall 54, or a plurality of beams in the left-right direction are fixedly provided over the left and right inclined side walls 53 and 54 toward the upper part and provided above. The structure is complicated by being more firmly configured than the storage portion 47.

Next, the storage portion 47 attached to the upper part of the gutter portion 46 with a bolt will be described. The front wall 62 of the storage portion 47 is formed by bending a steel plate, and is an upright wall near the lower part attached to the upper end of the front wall 48 of the gutter portion 46. It is formed by an upright wall 62b that inclines toward the rear with 62a, an upright wall 62c near the top, and an upright wall 62d that extends the rear end connected to the left end of the upright wall 62a and the incline wall 62b slightly to the left. By locating the upright wall 62c behind the front wall 48 of the gutter portion 46, interference with the exhaust gas aftertreatment device and the pre-cleaner provided at the rear portion near the upper part of the driving portion 29 is prevented.

Further, the rear wall 63 of the storage portion 47 is provided by bending the lower portion of the storage portion 47 so as to slightly project toward the rear side of the first vertical pipe 33, and the upper portion of the upright wall 63a is slightly inclined forward. A wall 63b is provided, and the above-mentioned holder 36 is attached near the upper part of the upright wall 63a so that the first vertical pipe 33 supports the upper part of the grain tank 26. Further, the right side wall 64 of the storage portion 47 has an upright wall 64b provided by fixing a reinforcing member 64a in the front-rear direction to the inside of the intermediate portion in the vertical direction and a front of the storage portion 47 fixed to the inside of the upright wall 64b. A mounting wall 64c to be bolted to the right end of the wall 62 and the rear wall 63 is provided, and the front and rear mounting walls 64c can be regarded as a part of the front wall 62 and the rear wall 63 of the storage portion 47.

A bracket is attached to the attachment portion between the rear attachment wall 64c and the rear wall 63, and a support pin is provided on this bracket to rotate the tank rear cover 65 that covers the first vertical pipe 33 and the like of the grain discharge auger 30. The hook provided on the rear side of the tank rear cover 65 is fixed to the pin of the locking portion 34a provided on the auger stay 34 to hold it in the closed state. Further, the left wall 66 of the storage portion 47 is formed by a lower plate 67 bolted to the upper part of the left inclined side wall 53 of the gutter portion 46 and an upper plate 68 riveted or welded to the upper end of the lower plate 67. Configure.

Further, the front and rear ends of the lower plate 67 and the upper plate 68 are riveted or welded to the left ends of the front wall 62 and the rear wall 63, respectively, 62b, 62c, 62d, 63a, 63b and integrated with them. do. The lower plate 67 is formed by bending in a dogleg shape at the intermediate portion in the vertical direction, and the inclined wall 67a which is the lower part of the lower plate 67 extends the left inclined side wall 53 of the gutter portion 46 upward. It is installed at the same angle and tilted toward the inside of the aircraft. Further, the upper portion of the lower plate 67 is an upright wall 67b parallel to the upright wall 64b of the right side wall 64.

Therefore, when the grains stored in the grain tank 26 are discharged to the outside of the machine by the operation of the grain discharge auger 30, the inclined wall 67a inside the machine body of the storage portion 47 and the left inclined side wall 53 of the gutter portion 46 The grains deposited on the upper surface are slid down on these upper surfaces and collected toward the horizontal racen 42 side of the grain discharge auger 30, and then discharged to the outside of the machine by the rotation of the horizontal racen 42 and the vertical racen 43. be able to.

On the other hand, a hole is formed so as to straddle the inclined wall 67a and the upright wall 67b inside the body of the above-mentioned storage portion 47, and a maintenance hole (maintenance and maintenance inspection hole) 67c, which is a feature of the present invention, is provided. That is, a hole 67c is formed in the central portion on the slightly front side in the front-rear direction of the lower plate 67 (the axial direction of the horizontal spiral 42), and the length of the hole 67c in the vertical direction along the inclined wall 67a and the upright wall 67b is omitted. A substantially rectangular hole 67c that is equal and has a lateral length slightly longer than the vertical length is provided.

Then, a substantially rectangular hole cover 69 that covers and closes the maintenance hole 67c is formed by bending a steel plate into a dogleg shape following the inclined wall 67a and the upright wall 67b of the lower plate 67, and forming the hole cover 69. Is attached to the peripheral edge of the maintenance hole 67c from the side inside the machine body, and is detachably fastened and attached with a plurality of bolts. The peripheral edge portion 69a of the hole cover 69 is bent outward to form a reinforcing portion for increasing the strength of the hole cover 69 and the lower plate 67.

Further, the above-mentioned upper plate 68 is provided with an upright wall 68a similar to the upright wall 67b of the lower plate 67, and a rectangular grain receiving port 68b facing rearward and upward is provided at the upper portion of the upright wall 68a toward the front. The receiving port 68b is provided so as to be in close contact with the outlet case 25a of the grain raising device 25 via a seal, and serves as a hole for receiving the grains transferred by the grain raising device 25 into the grain tank 26. Further, a bracket 70 is attached to the middle outer surface of the upright wall 67b near the front, and the bracket 70 is provided with a hook 71 which is rotated by a wire to the tank fixing lever 58. Then, the hook 71 can be engaged with a pin provided in the grain raising device 25 to fix the grain tank 26 at a position where the grains are stored, or to release the fixing thereof.

Further, an expansion chamber 72 for grains that swell toward the inside of the machine body is provided near the rear of the upper plate 68. The expansion chamber 72 includes a front wall 72a, a rear wall 72b, a left inclined wall 72c, a left upright wall 72d, and a ceiling wall 72e, and a peripheral portion on the right side of these walls is provided near the rear of the upper plate 68. It is bolted or riveted or welded to the peripheral edge of the opening 68c to be integrated with the upper plate 68, and the inside thereof is formed as a grain expansion chamber 72.

The ceiling wall covering the upper part of the storage portion 47 of the Glen tank 26 is composed of a substantially rectangular top plate 73, and the top plate 73 is bolted to the upper ends of the respective walls 62c, 63b, 64b, 68a below the top plate 73. It can be attached and detached with. Further, a rectangular inspection hole 73a is provided near the front portion of the top plate 73, and the inspection hole 73a is covered with a transparent cover 74 that can be opened and closed around the hinge at the rear portion. Further, a rectangular hole 73b to which a measuring device for measuring the quality of grains can be retrofitted is provided behind the inspection hole 73a, and a cover 75 for closing the hole 73b is fixed with a bolt.

Further, as shown in FIGS. 8 to 10, a pipe 77 to which an inverted V-shaped flow plate 76 is fixed is attached to the drive case 32 and the front mounting plate 49 above the horizontal spiral 42 of the grain discharge auger 30. Rotatably supports the shaft. Further, the arm 77a provided near the front end of the pipe 77 is engaged with the eccentric cam provided near the front end of the horizontal spiral 42, and the left and right end sides of the flow plate 76 swing up and down with the rotation of the horizontal spiral 42. Exercise.

Therefore, the flow plate 76 receives the weight of the grain to be deposited above the horizontal spiral 42 by itself, and prevents a large grain pressure from being applied to the horizontal spiral 42. Further, since the left and right end sides of the flow plate 76 swing in the vertical direction with the rotation of the horizontal spiral 42 to vibrate the surrounding grains, the grains can be moved between the flow plate 76 and the right inclined side wall 54. , Guided to a flow path formed between the flow plate 76 and the left inclined side wall 53, and the grains are sequentially flowed down to the horizontal spiral 42 to prevent the grains from stagnation.

Further, on the left inclined portion of the flow plate 76, a flow rate adjusting plate 78 which is advanced and retracted within the range of the elongated hole and fixed by a flange nut is provided in two parts. Therefore, the distance between the flow plate 76 and the left inclined side wall 53 can be changed by adjusting the advancing / retreating of the flow rate adjusting plate 78. If the transport load of the horizontal spiral 42 and the vertical spiral 43 becomes large, the flow rate adjusting plate 78 is adjusted so that the distance between the two is narrowed to reduce the transport load. On the contrary, if there is a margin in the transport load, the distance between the two is widened to promote the rapid discharge of grains to the outside of the machine.

Then, dust and grains adhering to the inner wall of the Glen tank 26 configured as described above and the diaphragm of the paddy sensor 79 attached to the rear walls 63 and 72b of the Glen tank 26 are removed and cleaned, or When adjusting the flow rate of the flow plate 76 described above, the grain tank 26 is rotated to the maintenance position and the work is performed in the same manner as when the threshing device 22 and the driving unit 29 are maintained. More specifically, when the Glen tank 26 is rotated to the maintenance position, the tank lower cover 57 is first removed, and the tank rear cover 65 is released from the closed state so that the cover can be freely rotated. (See Fig. 4).

Next, the tank lock lever 59 provided near the lower right portion of the front portion of the gutter portion 46 is pulled backward and rotated upward to release the fixing between the gutter portion 46 and the machine frame 2. Further, the tank fixing lever 58 is rotated upward with the left hand to release the fixing of the storage portion 47 to the machine frame 2 side, and the handle 49a formed on the front mounting plate 49 is grasped and pulled toward the front with the right hand. The lower part of the Glen tank 26 is supported by the machine frame 2 via the bearing 61, and the front side of the Glen tank 26 can be pulled out to the right outside of the machine.

The drawn Glen tank 26 can be rotated to the maximum until the airframe frame 2 (not shown) and the stopper provided at the lower part of the Glen tank 26 come into contact with each other, but the rotation position is slightly in front of the frame 2. Rotate to the maintenance position shown in 5. Therefore, the rod 26a for rotatably attaching one end to the left inclined side wall 53 of the gutter portion 46 shown in FIG. 7 is removed from the clamp 26b, and the other end is fitted into the hole 2b fixed to the machine frame 2 to be locked. Then, the gutter tank 26 can be held in the maintenance position.

Further, when the Glen tank 26 is rotated to the maintenance position in this way, the maintenance hole 67c provided in the above-mentioned Glen tank 26 faces the ground directly below. Therefore, as shown in FIG. 6, the operator stands on the ground without being disturbed by the machine frame 2, the crawler traveling device 4, and the like, and removes the hole cover 69 by using a tool. Further, the operator can put the upper body into the tank 26 from the maintenance hole 67c while bending slightly, and for example, dust and grains adhering to the inner wall of the tank 26 can be swept off by using a brush, a blower, or the like.

When the worker puts the upper body in or out of the tank 26, he first puts his head in the opening at a relatively high position corresponding to the upright wall 67b of the maintenance hole 67c, and then tilts the maintenance hole 67c. The upper body may be inserted into the opening at a low position corresponding to the wall 67a, or the upper body may be removed from the tank 26 in the reverse procedure. Can be. Further, the opening corresponding to the inclined wall 67a for inserting the upper body is close to the horizontal spiral 42 of the grain discharge auger 30, so that the worker puts the upper body deep in the tank 26 under a stable scaffolding on the ground. , It becomes easy to access the inner wall of the tank 26.

Further, the maintenance hole 67c may be provided with a relatively small hole that allows the operator to comfortably insert the upper body into the tank so as to straddle the inclined wall 67a and the upright wall 67b. A hole cover 69 that suppresses a decrease in strength of the wall 67a or the upright wall 67b, does not adversely affect the material handling of the lower plate 67 provided with the inclined wall 67a or the upright wall 67b as a single unit, and closes the maintenance hole 67c. Even so, the hole cover 69 can be attached and detached in a short time with a small number of bolts.

Further, since the maintenance hole 67c is formed so as to straddle the inclined wall 67a and the upright wall 67b of the left side wall 66 of the storage portion 47 inside the machine body facing the threshing device 22, the grain tank 26 is rotated outward to open. Then, the upper body is put into the tank 26 from the maintenance hole 67c to perform maintenance in the grain tank 26, and then maintenance of various devices provided on the grain tank 26 side of the threshing device 22 is performed, or conversely, the grain removal device 22 side. By performing the maintenance of each part first, it is possible to efficiently perform the maintenance of each part by eliminating unnecessary procedures.

When dust and grains adhering to the inner wall of the grain tank 26 are swept off with a brush, a blower, or the like, these are finally deposited on the horizontal spiral 42 or the spiral cover 52 of the grain discharge auger 30. become. Therefore, in order to discharge these to the outside of the machine, after the maintenance is completed, the grain discharge auger 30 is driven and discharged from the discharge port 44 of the grain discharge auger 30. Alternatively, the spiral cover 52 can be opened and removed for perfection.

Further, when adjusting the flow rate of the flow plate 76 attached to the horizontal spiral 42 of the grain discharge auger 30, the operator inserts the upper body into the tank 26 from the maintenance hole 67c as described above, and the horizontal spiral 42. The flow rate adjusting plate 78 provided above the above is adjusted by loosening the flange nut and advancing / retreating while visually observing the distance between the flange nut and the left inclined side wall 53 to adjust the flow rate of the flow plate 76.

In this case, since the maintenance hole 67c is formed in the central portion on the front side slightly in the axial direction of the horizontal spiral 42 of the lower plate 67, the two flow rate adjusting plates 78 provided along the axial direction of the horizontal spiral 42 are provided. You can reach out while facing each other and adjust the advance and retreat without fail. Further, the maintenance hole 67c can be made into a relatively small maintenance hole having a length slightly larger than the shoulder width of the worker.

Although the embodiment of the present invention has been described above with reference to the drawings, the maintenance hole 67c of the grain tank 26 is not limited to the left side wall 66 of the storage unit 47, but the right side wall 64 of the storage unit 47 has an inclined wall in addition to the upright wall. The maintenance hole 67c may be provided on the right side wall 64, or the maintenance hole 67c may be formed so as to extend to the upper part of the left inclined side wall 53 of the gutter portion 46. Based on this, it can be changed to various embodiments and implemented, and is not necessarily limited to the above-described embodiments.

1 Combine 2 Aircraft frame 22 Threshing device 26 Glen tank 30 Grain discharge auger 42 Horizontal spiral 46 Gutter 47 Reservoir 67 Lower plate (side plate)
67a Inclined wall 67b Upright wall 67c Maintenance hole 69 Hole cover

Claims (5)

A grain discharge auger installed at the bottom of the grain tank, which is rotatably provided around the turning center of the grain discharge auger in order to provide a space for maintenance and maintenance between it and the threshing device attached to the machine frame. A maintenance hole that has a sloping wall that collects grains on the side of the sloping wall and an upright wall that connects to the upper part of this sloping wall, and when the grain tank is rotated outward and opened, the area directly below it faces the ground. Is formed across the inclined wall and the upright wall. The combine according to claim 1, wherein the maintenance hole is formed so as to straddle an inclined wall and an upright wall inside the machine body facing the threshing device side. 1. The combine according to claim 2. The combine according to claim 3, wherein the maintenance hole is covered with a hole cover formed by bending along an inclined wall and an upright wall of a side plate. The maintenance hole is formed in a substantially rectangular shape long in the axial direction of the horizontal spiral of the grain discharge auger, and the upper body is inserted from the maintenance hole so that the flow rate of the flow plate provided above the horizontal spiral can be adjusted. The combine according to any one of claims 1 to 4, which is characteristic.

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