JP2016067255A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine which solves a problem that discharge work may require labor depending on a positional relation with a grain discharge destination and can easily discharge grains.SOLUTION: The combine includes: a grain storage device 7 storing grains; a first conveyance cylinder 20 arranged on a rear side of the grain storage device 7 and having one end part connected with the grain storage device 7; a second conveyance cylinder 30 having one end part connected with the other end part of the first conveyance cylinder 20 and the other end part including a discharge device 70 discharging the grains to outside of the machine; and a blower device 60 supplying air for grain conveyance into the first conveyance cylinder 20 and second conveyance cylinder 30. The first conveyance cylinder 20 is divided into an upper side conveyance cylinder 121 on an upper side and a lower side conveyance cylinder 120 on a lower side. The lower side conveyance cylinder 120 is freely rotatable around a shaft center Z in a front/rear direction of the machine body.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a combine.

  The combine is provided with a cutting device on the front side of the chassis equipped with the traveling device, and provided with a control unit, a threshing device and a Glen tank on the upper side of the chassis, and the grain in the Glen tank is placed in the lower transfer cylinder in the bottom of the Glen tank. Is provided with a feeding device for feeding out, a blower device is provided on the inlet side of the conveyance cylinder, and a discharge cylinder for grain discharge guidance is provided on the outlet side of the conveyance cylinder (see, for example, Patent Document 1).

JP 2011-155895 A

However, the discharge cylinder for the grain discharge guide is changed in the overhanging direction according to the position of the discharge destination such as the truck bed, but there are many portions that rotate when the overhanging direction is changed, and the rotation cylinder is rotated. An excessive load may be applied to the dynamic drive device. In addition, the support cylinder and the discharge cylinder have insufficient support rigidity when rotated in this way, and the transfer cylinder and the discharge cylinder may be deformed. It is an object of the present invention to provide a combine that can change the projecting direction of the cylinder more smoothly.

The present invention that has solved the above problems is as follows.
The invention which concerns on Claim 1 is arrange | positioned behind the grain storage apparatus (7) which stores a grain, and the said grain storage apparatus (7), and one end part is connected to the said grain storage apparatus (7). The first transport cylinder (20) and the first end having one end connected to the other end of the first transport cylinder (20) and the other end having a discharge device (70) for discharging the grain out of the machine. In the combine provided with two conveying cylinders (30) and a blower (60) for supplying air for conveying the grains into the first conveying cylinder (20) and the second conveying cylinder (30), the second conveying That the rotation drive device (175) for rotating the tube (30) about the vertical axis (Y) is disposed above the center portion in the vertical direction of the grain storage device (7). It is a feature combine.

  According to a second aspect of the present invention, there is provided a cylindrical frame (135) that rotatably supports the second transport cylinder (30), and the frame (135) on the rear side of the grain storage device (7). A rear frame (160) supported by the frame (2); and a lift drive device (170) for rotating the second transport cylinder (30) so that the discharge device (70) moves up and down. The driving device (170) is disposed above the support plate (164) provided on the upper portion of the rear frame (160), and the rotational driving device (175) is disposed below the support plate (164). The combine according to claim 1.

  The invention according to claim 3 is the combine according to claim 2, wherein the rear frame (160) is connected to a threshing device (5) provided on a side of the grain storage device (7).

  According to invention of Claim 1, since it has arrange | positioned above the center part in the up-down direction of a grain storage apparatus (7), a 2nd conveyance cylinder (30) is rotated with a small driving force. The twist generated when the second transport cylinder (30) is rotated is reduced. And by these things, the extension direction of the 2nd conveyance cylinder (30) can be changed smoothly.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the elevating drive device (170) is disposed above the support plate (164) provided on the upper portion of the rear frame (160). Since the rotation drive device (175) is disposed below the support plate (164), the lift drive device (170) and the rotation drive device (175) are arranged around the support plate (164). Therefore, it is possible to reduce the size of the combine body.

  According to invention of Claim 3, in addition to the effect by invention of Claim 2, it connects with the threshing apparatus (5) which provided the rear part frame (160) in the side of the said grain storage apparatus (7). As a result, the support rigidity of the first transfer cylinder (20) and the second transfer cylinder (30) can be increased, and twisting and bending of these transfer cylinders can be prevented to prevent deformation and breakage.

FIG. 1 is a side view of the combine. FIG. 2 is a plan view of the combine. FIG. 3 is a side view showing the first transport cylinder and the second transport cylinder. FIG. 4 is a side view showing the first transport cylinder and the second transport cylinder. FIG. 5 is a cross-sectional view of the main part. FIG. 6 is an enlarged cross-sectional view of a main part. FIG. 7 is a block diagram showing a schematic configuration. FIG. 8 is a side view showing a main part around the first transport cylinder. FIG. 9 is a rear view showing the main part around the first transport cylinder. FIG. 10 is a rear view showing the main part around the first transport cylinder, and is an explanatory view of the second discharge operation method. FIG. 11 is a plan view showing a main part around the first transport cylinder.

  Embodiments according to the present invention will be described below 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.

  The combine 1 which concerns on embodiment is demonstrated based on FIG. 1 thru | or FIG. FIG. 1 is a side view showing a schematic configuration of the combine according to the embodiment. FIG. 2 is a plan view illustrating a schematic configuration of the combine according to the embodiment.

  In the following, for convenience, three directions orthogonal to each other are defined as a front-rear direction, a left-right direction, and a vertical direction, respectively, and the configuration of each part will be described according to this definition. The front-rear direction is the length direction of the combine (airframe) 1, the left-right direction is the width direction, and the up-down direction is the height direction. Of these, the forward is the direction of travel of the combine 1 during the cutting operation, the left is the left-hand direction toward the front, the right is the right-hand direction toward the front, and the gravity acts on the lower side. Direction. 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.

  The combine 1 is a mobile agricultural machine that harvests and thresh crops while running. The combine 1 includes a traveling device 3 arranged at the lower part of the body frame 2, a reaping device 4 attached to the front end of the body frame 2, and a threshing device mounted on the upper left side (one side) of the body frame 2. 5, a cab 6 disposed in the front right part on the fuselage frame 2, and a grain tank (grain storage device) 7 disposed on the upper right side (the other side) of the fuselage frame 2 and behind the cab 6. And a diesel engine (hereinafter referred to as an engine) 8 disposed on the fuselage frame 2 and below the cab 6 is mounted. A blower cylinder 61 is connected to the bottom of the grain tank 7 of the combine 1, and the first transfer cylinder 20 (a part of the discharge unloader) is connected to the blower cylinder 61. Moreover, the combine 1 provided the air blower 60 in the entrance side of the 1st conveyance cylinder 20, and provided the discharge apparatus 70 for the grain discharge | emission guidance in the exit side of the 2nd conveyance cylinder 30 (a part of discharge | emission unloader). Is. Here, the discharge unloader is mainly composed of the first conveyance cylinder 20 and the second conveyance cylinder 30.

The traveling device 3 is provided on the lower side of the body frame 2 in the vertical direction. The traveling device 3 transmits the power from the engine 8 to the pair of left and right crawler belts 3a to cause the combine 1 to travel.
The reaping device 4 is provided in front of the body frame 2. The reaping device 4 is driven by the driving force from the engine 8 to harvest the cereal and transports the harvested cereal to the threshing device 5 or the like. The reaping device 4 mainly includes a reaping portion 41, a transport device 46, and a reaping power transmission mechanism (not shown). Here, the cutting power transmission mechanism transmits the driving force from the engine 8 to the cutting unit 41 and the transport device 46.

  The mowing unit 41 includes an auger frame 42, an auger (not shown), and a main cutting device 44 for harvesting cereals. The auger frame 42 includes a bottom plate 42a, a pair of left and right side plates 42b in the vehicle width direction, and a rear plate 42c. The auger is disposed in the auger frame 42 along the vehicle width direction and is rotatably supported. The main cutting device 44 cuts and harvests the culm by sandwiching the culm between a reciprocating movable blade (not illustrated) and a fixed blade (not illustrated).

  Further, the harvesting unit 41 is provided with a scraping reel 45 that scrapes the cereals cut and cut by the main cutting device 44 above the fixed blade and the movable blade. The take-up reel 45 is provided so that the position in the front-rear direction and the height in the vertical direction can be adjusted. The cutting device 4 cuts and takes in the culm by the main cutting device 44 when the auger or the like is driven by the driving force transmitted from the engine 8. In the cutting device 4, the main cutting device 44 is moved up and down by a lifting cylinder (not shown).

  The conveyance device 46 is provided on the rear side of the cutting unit 41, more specifically, between the cutting unit 41 and the body frame 2. The conveying device 46 conveys the cereals harvested by the main cutting device 44 to the threshing device 5 by the driving force from the engine 8.

  The threshing device 5 is provided on the rear side of the reaping device 4 and on the side of the grain tank 7, and includes a lower sorting portion (not shown) and an upper threshing portion (not shown). The sorting unit is a device that separates the grains from the impurities such as cocoons of cereals threshed by the threshing unit by the driving force from the engine 8. The threshing unit threshs the cereals conveyed by the driving force from the engine 8. That is, the threshing unit is a device that separates the grains from the cereal husks harvested by the reaping device 4.

  The driver's cab 6 is a driver's seat for performing a driving operation, a cutting operation, or the like while a worker is seated. The cab 6 is provided in front of the body frame 2 in the front-rear direction, and is provided above the engine 8 in the up-down direction. Further, around the operator's cab 6, for example, a cutting lift lever (not shown) for lifting and lowering the cutting device 4, a lifting and lowering operation and turning of the discharge unloader at a position where an operator can sit and operate. An unloader operation lever (not shown), an unloader panel switch 80 (see FIG. 7), a display panel, and the like are provided for performing operations and expansion operations.

  The Glen tank 7 is a grain storage device that temporarily stores the grains selected by the threshing device 5. The Glen tank 7 is provided behind the cab 6 in the front-rear direction and on the right side of the body frame 2 in the vehicle width direction. The Glen tank 7 is connected to a discharge unloader. The discharge unloader conveys the grains in the grain tank 7 by the driving force from the engine 8 and discharges the grains to the outside of the grain tank 7. The grain in the grain tank 7 is discharged from the unloader, specifically, in the first transport cylinder 20 erected on the rear side of the grain tank 7 and from the upper end of the first transport cylinder 20. The inside of the cylinder 30 is conveyed by wind power from the blower 60 and discharged from the discharge device 70 to the outside.

The engine 8 is a generation source of driving force used in the combine 1, and is a heat engine that converts fuel energy into mechanical work and outputs it as rotational force by burning the fuel in the combustion chamber. The engine 8 is mounted in an engine room (not shown) formed in front of the machine body frame 2 in the front-rear direction and below the cab 6 in the up-down direction.
(First transport cylinder and second transport cylinder)
The first transport cylinder 20 is an elastic cylindrical member (inner diameter d1) disposed behind the combine 1 in the front-rear direction, and one end 20 a is connected to the blower cylinder 61. The one end part 20a and the blower cylinder 61 are connected in close contact with the circumferential surface without any gap. A blower device 60 described later is disposed on the inlet side of the blower cylinder 61. Thereby, in the 1st conveyance cylinder 20, the grain which flowed in via the ventilation cylinder 61 is conveyed in the 1st conveyance cylinder 20 with an wind force, and flows in into the 2nd conveyance cylinder 30. FIG. Further, as shown in FIG. 3, the first conveying cylinder 20 is formed with a curved portion 21 that is curved at the upper rear portion of the combine 1. The 1st conveyance cylinder 20 is processed in the inner peripheral surface to prevent static electricity. The inner diameter of the other end portion 20 b of the first transfer cylinder 20 is formed to be slightly larger than the inner diameter of the inner cylinder 32 of the second transfer cylinder 30. Accordingly, the inner cylinder 32 of the second conveyance cylinder 30 is fitted to the other end portion 20 b of the first conveyance cylinder 20.

  As shown in FIG. 3, the support member 22 supports the first transport cylinder 20 from below in the bending portion 21. The support member 22 is in the form of a roller, and the upper side of the outer peripheral surface abuts on and supports the lower side of the outer peripheral surface of the first transport cylinder 20. The first conveying cylinder 20 is held horizontally by the support member 22 from the contact position with the support member 22 to the other end portion 20b, that is, a linear portion 24 in which the axial direction extends linearly is formed. . This prevents the other end 20 b of the first transport cylinder 20 from being twisted with respect to the one end 30 a of the second transport cylinder 30 regardless of the extending direction of the second transport cylinder 30.

In the first transport cylinder 20, the vicinity of the curved portion 21, that is, the upper rear portion of the combine 1 in the front-rear direction is covered and protected by the casing 23.
The second transport cylinder 30 is disposed on the upper portion of the combine 1, and one end 30a is inserted and connected to the other end 20b of the first transport cylinder 20, as shown in FIGS. It is elastic in the direction. A discharge device 70 described later is connected to the other end 30 b of the second transport cylinder 30. The 2nd conveyance cylinder 30 is a steel pipe of the double cylinder structure by which the inner cylinder 32 was inserted in the outer cylinder 31 so that advancement / retraction was possible. As shown in FIG. 5, the outer cylinder 31 has an inner diameter d1 and the same diameter as the first transport cylinder 20. The inner diameter of the inner cylinder 32 is d2, and the inner diameter d2 is slightly smaller than the inner diameter d1 of the outer cylinder 31 so that it can advance and retreat. The outer diameter of the inner cylinder 32 is set to the same diameter as the inner diameter d1 of the outer cylinder 31. Here, the same diameter includes substantially the same diameter (slightly smaller than the same diameter, slightly larger than the same diameter).

  As shown in FIG. 6, a taper 35 is formed on the inner peripheral surface of the one end 32 a of the inner cylinder 32 of the second transport cylinder 30. The taper 35 is processed so that the inner diameter of the inner peripheral surface of the one end portion 32a of the inner cylinder 32 of the second conveyance cylinder 30 gradually increases toward the tip end side (left direction in FIG. 6). Thereby, the level | step difference between the one end part 32a of the inner cylinder 32 and the 1st conveyance cylinder 20 becomes small, and the difference of the internal diameter d1 of the 1st conveyance cylinder 20 and the internal diameter d2 of the inner cylinder 32 changes continuously.

  The extension direction of the second transport cylinder 30 can be adjusted by a rotation drive device 175 described later via an unloader panel switch 80 described later, and the height can be adjusted by an elevating drive device 170, which will be described later. The length can be adjusted by the telescopic drive device 40.

  The second transport cylinder 30 is placed and fixed on the upper portion of the support member 35 disposed at the substantially central portion in the axial direction of the second transport cylinder 30 when the grain is not discharged. When the second transport cylinder 30 is discharged, the operator operates the unloader panel switch 80 so as to discharge the grain to a predetermined position such as a truck bed or a container. When the control device 90 detects that the control signal from the unloader panel switch 80 has been received, the control device 90 transmits a control signal for adjusting the extending direction of the second transport cylinder 30 to the rotation drive device.

As shown in FIG. 3, the second transport cylinder 30 accommodates the inner cylinder 32 in the outer cylinder 31 by the expansion / contraction drive device 40 when the grain is not discharged, and the axial length of the second transport cylinder 30. Shorten the length. As shown in FIG. 4, the second transport cylinder 30 pulls out the inner cylinder 32 from the outer cylinder 31 by the telescopic drive device 40, as shown in FIG. 4, for example, a grain transporting truck (hereinafter referred to as a truck). The length of the second conveying cylinder 30 in the axial direction is adjusted to an appropriate length so that the grain is discharged to a predetermined position such as a cargo bed or container.
(Extension drive device)
The telescopic drive device 40 is disposed at one end portion 32 a of the inner cylinder 32 of the second conveyance cylinder 30, and moves the outer cylinder 31 forward and backward relative to the inner cylinder 32 to expand and contract the second conveyance cylinder 30. The telescopic drive device 40 mainly includes a rail member 41, a movable member 42, a motor 43, and a casing 44 that accommodates them. The rail member 41 extends between the one end portion 32 a and the other end portion 32 b of the inner cylinder 32 of the second conveyance cylinder 30 in parallel with the second conveyance cylinder 30. The rail member 41 is disposed so as to be separated from the inner cylinder 32 and the outer cylinder 31. On the outer peripheral surface of the rail member 41, an engagement groove 41a is formed over the entire circumference. The movable member 42 is disposed at one end 31a of the outer cylinder 31, is driven by a motor 43, and slides along the rail member 41 while engaging with the engagement groove 41a. That is, when the movable member 42 slides along the rail member 41 while engaging with the engagement groove 41 a, the outer cylinder 31 moves with respect to the inner cylinder 32. The motor 43 supplies power for driving the movable member 42.

  The casing 44 has a curved surface that is curved similarly to the outer peripheral surfaces of the outer cylinder 31 and the inner cylinder 32, and is disposed above the outer cylinder 31 and the inner cylinder 32. One end 44a of the casing 44 is fixed to the one end 32a of the inner cylinder 32 via a fixture 44b. The outer cylinder 31 can move forward and backward with respect to the casing 44.

By such a telescopic drive device 40, the outer cylinder 31 of the second transport cylinder 30 moves between the one end 32 a and the other end 32 b with respect to the inner cylinder 32 along the rail member 41. That is, the outer cylinder 31 moves relative to the inner cylinder 32 in the front in the front-rear direction with respect to the position at which the telescopic drive device 40 is disposed.
(Blower)
As shown in FIG. 1, the blower 60 is for conveying the grains stored in the Glen tank 7 with wind power via the first conveyance cylinder 20 and the second conveyance cylinder 30. The blower 60 sucks outside air by rotating the rotating body, and blows out air from a blower opening (not shown). The air blown out from the blower port passes through the blower cylinder 61 and flows into the inlet side of the first transfer cylinder 20. By the air blown out from the blower 60, the grains are conveyed through the first conveyance cylinder 20 and the second conveyance cylinder 30 and conveyed to the outlet side (discharge device 70 side).
(Discharge device)
As shown in FIG. 5, the discharge device 70 is provided at the other end 31 b of the outer cylinder 31 of the second transfer cylinder 30 and has a discharge port 71 that opens in a direction different from the axial direction of the second transfer cylinder 30. It is formed by processing a steel plate which is a conductive material. The discharge port 71 is formed with an opening toward the lower side in the vertical direction, and the grain conveyed to the discharge port 71 falls downward. In this way, the discharge device 70 discharges the grain to a discharge destination such as a loading platform of a truck stopped nearby. The discharge port 71 of the discharge device 70 is connected to the other end portion 31b of the outer cylinder 31 of the second transfer cylinder 30 in a state of being in close contact with the peripheral surface without any gap. A shooter 72 is detachably disposed in the discharge port 71.

The shooter 72 is connected to the outlet 71 and guides the grain. The shooter 72 is fixed with, for example, a thumbscrew 72a so that it can be attached and detached without using a tool. Thereby, the shooter 72 can be easily opened and closed or removed at any time by the operator.
(Detailed structure of the first transfer cylinder)
Next, the detailed structure of the 1st conveyance cylinder 20 is demonstrated.

  The first transport cylinder 20 is divided at an intermediate portion in the height direction of the Glen tank 7 behind the Glen tank 7. In other words, the first transport cylinder 20 is connected to the lower transport cylinder 120 whose one end 120 a is connected to the blower cylinder 61 and whose other end 120 b is located at the intermediate portion in the height direction of the Glen tank 7 behind the Glen tank 7. One end 121a faces the vicinity of the other end 120b of the lower transfer cylinder 120, and the other end 121b has an upper transfer cylinder 121 that fits into the inner cylinder 32 of the second transfer cylinder 30.

  A part of the lower conveyance cylinder 120 enters a support cylinder 130 that is erected upward from the body frame 2. The support cylinder 130 includes an elbow part 131 supported by the body frame 2 so as to be rotatable about the longitudinal axis Z, and a cylinder part 132 extending upward from the upper part of the elbow part 131. The lower conveying cylinder 120 extends rearward from the blower cylinder 61 side, enters a curved space in the elbow part 131 from a front opening 131a formed at the front part of the elbow part 131, and is located above the elbow part 131. The tube portion 132 is inserted into the tube portion 132 through the upper opening 131 b formed at the top, and extends upward from the upper end portion of the tube portion 132.

  The upper conveying cylinder 121 enters the cylindrical frame 135 and the casing 23 from below the lower end portion of the cylindrical frame 135 provided at the lower part of the casing 23 and is fitted into the inner cylinder 32 of the second conveying cylinder 30. ing.

The other end 120 b of the lower transport cylinder 120 and the one end 121 a of the upper transport cylinder 121 are connected by a joint member 122. The joint member 122 is connected to the lower connecting piece 122a provided at the other end 120b of the lower conveying cylinder 120 and the upper connecting piece 122b provided at the one end 121a of the upper conveying cylinder 121, whereby the lower conveying cylinder The air blown from the one end portion 120a side of 120 and the grain conveyed by this air are prevented from flowing out to the outside at the connecting portion, and the joint member 122 is a so-called swivel joint, The side connection piece 122a and the upper connection piece 122b are connected to each other so as to be relatively rotatable around the vertical axis.
(Glen tank and discharge unloader support structure)
The front part of the Glen tank 7 is supported by a support frame (not shown) standing upward from the machine body frame 2. Further, the rear part of the Glen tank 7 is supported by a support frame 151 erected upward from the machine body frame 2.

  A front portion of the elbow portion 131 of the support cylinder 130 is supported at a lower portion of the support frame 151 in a state of being rotatable around the axial center Z in the front-rear direction. The rear part of the elbow part 131 is supported by a stay 152 provided on the body frame 2 so as to be rotatable about the axis Z in the front-rear direction. Note that the axial center Z in the front-rear direction substantially coincides with the axis of the blowing cylinder 61 in the extending direction.

  A rear frame 160 that supports the second transfer cylinder 30 and the like is disposed behind the Glen tank 7. The rear frame 160 extends in the first vertical frame 161a and the second vertical frame 161b that are erected upward from the body frame 2, and the first vertical frame 161a and the second vertical frame 161b extend from the upper part to the left side. A first horizontal frame 162a and a second horizontal frame 162b are provided. The front portion of the first vertical frame 161a is joined to the support frame 151 that supports the rear portion of the Glen tank 7, and is an integral member.

  Further, the rear frame 160 includes a first connecting frame 163a that connects a vertical middle portion of the first vertical frame 161a and a horizontal middle portion of the first horizontal frame 162a, and a vertical direction of the second vertical frame 161b. A second connection frame 163b that connects between the middle part of the second horizontal frame 162b and the middle part in the left-right direction of the second horizontal frame 162b, and a third connection frame 163c that connects between the first vertical frame 161a and the upper part of the second vertical frame 161b. I have.

  A support plate 164 is provided on the upper portion of the rear frame 160 to receive and support the weight of the second transport cylinder 30 and the like. In addition, a holding plate 165 that prevents the cylindrical frame 135 from falling is provided at a portion of the rear frame 160 that is lower than the support plate 164.

  The cylindrical frame 135 provided at the lower part of the casing 23 has a gear plate 136 at an intermediate portion in the vertical direction at the outer peripheral portion. The gear plate 136 is an external gear formed in an annular shape and joined to the outer peripheral portion of the cylindrical frame 135.

  The cylindrical frame 135 is fitted into a hole having substantially the same diameter as the outer periphery of the cylindrical frame 135 formed in the support plate 164 and the holding plate 165, and the lower surface of the gear plate 136 is in contact with the upper surface of the support plate 164. , Supported by the rear frame 160. In this way, the axial line of the cylindrical frame 135 is held without being tilted by fitting with the holes of the support plate 164 and the holding plate 165, and the cylindrical frame 135 and the second plate are held by contact between the gear plate 136 and the support plate 164. The weight of the transport cylinder 30 or the like is supported.

The upper part of the cylindrical frame 135 and the base part (lower rear part) of the casing 23 are pin-coupled by a support shaft 173, and the casing 23 has a cylindrical frame in a state where the tip end portion can rotate around the support shaft 173. 135 is supported. The second transport cylinder 30 is connected to the tip of the casing 23.
(Elevation drive device and rotation drive device)
Between the cylindrical frame 135 and the casing 23, an elevating drive device 170 that changes the height of the discharge device 70 is provided. The elevating drive device 170 includes a hydraulic cylinder 171 that expands and contracts between the cylindrical frame 135 and the casing 23.

  Further, the support plate 164 is provided with a rotation drive device 175 that changes the extending direction of the discharge device 70. The rotational drive device 175 includes a pinion 177 that meshes with the gear plate 136 of the cylindrical frame 135, and an electric motor 176 that applies a rotational driving force to the pinion 177. The rotation drive device 175 changes the projecting direction of the discharge device 70 by rotating the cylindrical frame 135 around the vertical axis Y.

Note that the hydraulic cylinder 171 of the lifting drive device 170 is disposed above the support plate 164, and the electric motor 176 of the rotation drive device 175 is mounted on the lower surface of the support plate 164.
(Unloader panel switch)
As shown in FIG. 7, the unloader panel switch 80 is provided with a switch for performing an operation related to grain discharge, and is mainly provided with a switch including a discharge switch 81 and a stop switch 82. . The unloader panel switch 80 transmits ON / OFF of the switch to the control device 90 as a control signal.

  The discharge switch 81 is a switch that starts discharging grains from the combine 1. The discharge switch 81 transmits a control signal to that effect to the control device 90 when turned on (discharge) by the operator. Then, the feeding device (not shown) and the blower 60 are driven by the control device 90. In this way, when the discharge switch 81 is turned “ON (discharge)”, the discharge of the grains from the glen tank 7 is started.

The stop switch 82 is a switch for stopping the discharge of the grain from the combine 1. The stop switch 82 transmits a control signal to that effect to the control device 90 when turned on (stopped) by the operator. Then, after the feeding device is stopped by the control device 90, the blower device 60 is stopped. In this way, when the stop switch 82 is set to “ON (stop)”, the grain discharge from the grain tank 7 is stopped.
(Control device)
The control device 90 performs the lifting / lowering operation of the cutting device 4, the lifting / lowering operation of the discharge unloader, the turning operation, and the extension operation based on the operation of the cutting lifting / lowering lever and the unloader operation lever. The control device 90 receives control signals from the discharge switch 81, the stop switch 82, etc. of the unloader panel switch 80, and transmits control signals to the rotation drive device, the telescopic drive device 40, and the blower device 60. It is.
(Combine operation)
Next, the operation | movement at the time of the grain conveyance of the combine 1 comprised in this way is demonstrated with reference to drawings.

The combine 1 harvests the culm by the reaping device 4 while the traveling device 3 is driven by the driving force generated by the engine 8 and travels. The cereals harvested by the reaping device 4 are conveyed to the threshing device 5. The reaping device 4 weeds with a weed body, rakes the cereals into the auger frame 42 with a take-up reel 45, and cuts and reaws with the main cutting device 44. Then, the combine 1 transports the cereals harvested by the reaping device 4 to the threshing device 5 by the transport device 46. Then, the combine 1 threshs the cereal with the threshing device 5 to select the grains, and stores the selected grains in the glen tank 7.
(First discharge operation method)
When the operator confirms the display panel of the cab 6 and finds that the grain stored in the Glen tank 7 is full or exceeds a predetermined amount, the combine 1 is stopped and the truck is stopped nearby. .

  Then, the operator operates the unloader panel switch 80 to adjust the height, the projecting direction, and the length of the second transport cylinder 30 according to the truck bed. When the control device 90 detects the control signal for adjusting the extension direction from the unloader panel switch 80, the control device 90 transmits a control signal having the extension direction as a predetermined angle to the rotation driving device of the second transport cylinder 30. In this way, the extending direction of the second transport cylinder 30 is adjusted. Further, when the control device 90 detects the length adjustment control signal from the unloader panel switch 80, the control device 90 pulls the outer cylinder 31 forward in the front-rear direction with respect to the telescopic drive device 40 of the second transport cylinder 30 to a predetermined length. A control signal is transmitted. In this way, the discharge port 71 of the discharge device 70 of the combine 1 is positioned above the truck bed.

  Then, the worker presses the discharge switch 81 of the unloader panel switch 80. When detecting the “ON (discharge)” signal from the discharge switch 81, the control device 90 transmits a control signal for driving the feeding device and a control signal for driving the blower 60. Thus, the combine 1 conveys the grain in the Glen tank 7 by the wind force through the first transport cylinder 20 and the second transport cylinder 30 and discharges the grain from the discharge device 70 to the outside.

  When the operator confirms the display panel of the cab 6 and finds that there is no grain stored in the glen tank 7 (the discharge is completed), the operator presses the stop switch 82 of the unloader panel switch 80. When the control device 90 detects an “ON (stop)” signal from the stop switch 82, the control device 90 transmits a control signal for stopping the feeding device, and transmits a control signal for stopping the blower device 60 after the first predetermined time has elapsed. To do. In this way, the grain discharge from the Glen tank 7 is stopped.

In this way, until the desired range of mowing work is completed, the harvesting device 4 harvests the culm while traveling on the combine 1, threshing by the threshing device 5, and discharging the grain from the discharging device 70 to the truck. Is repeated.
(Second discharge method)
Next, the second discharging method will be described. The second discharging operation is to transfer the grains to a portable grain bag having a smaller volume than a truck bed or the like. For example, an auxiliary worker who does not get on the combine 1 is carried out in an operation in which grains are packed in a bag and loaded on a truck manually.

  An operator who is on the combine 1 stops the combine 1 in the field in a timely manner. The auxiliary worker holds the grain bag in the vicinity of the combine 1 and moves to the periphery of the discharge unloader to release the connection of the joint member 122. Then, the auxiliary worker rotates the lower conveyance cylinder 120 around the axis Z in the front-rear direction, and positions the other end 120 b of the lower conveyance cylinder 120 outside the side edge of the body frame 2. In this state, the auxiliary worker prepares for discharge by curving so that the direction of the upper part of the lower conveyance cylinder 120 having flexibility faces the inside of the grain bag.

  Here, the auxiliary worker informs the worker that the preparation for discharge is completed, and the worker presses the discharge switch 81 of the unloader panel switch 80. When detecting the “ON (discharge)” signal from the discharge switch 81, the control device 90 transmits a control signal for driving the feeding device and a control signal for driving the blower 60.

  It should be noted that a sensor for detecting that the joint member 122 has been released is provided, and the control device 90, when the joint is released, controls the driving speed of the blower 60 from the time of the first discharge operation method. Also reduce.

As a result, the discharge is started, and when the grain bag is almost full, the auxiliary worker tells the worker to stop the discharge, the operator presses the stop switch 82, and the discharge stops.
In addition, although the structure which detects the connection cancellation | release by the joint member 122 is arbitrary, the switch of a contact child machine can be provided in the junction part of the lower side connection piece 122a and the upper side connection piece 122b of the joint member 122, for example. Moreover, the sensor which detects the rotation angle around the axis Z of the elbow part 131 is provided, and joint cancellation | release can also be determined with the detection angle of this sensor. In this case, the other end portion 120b of the lower conveyance cylinder 120 is positioned in the vicinity of the outer end portion of the body frame 2 from the angle at which the rotation angle of the elbow portion 131 is inclined by a predetermined angle outside the connected state of the joint member 122. The operation of the discharge switch 81 is invalidated up to the angle to be performed, and at the angle where the other end portion 120b of the lower conveyance cylinder 120 is inclined to the outside of the body beyond the angle positioned near the outer end of the body frame 2, It is preferable to lower the driving speed of the blower 60 than when the first discharging operation method is used.
(Effect of the combine according to the embodiment)
As described above, according to the combine 1 according to the embodiment, the length of the discharge unloader can be adjusted to a desired length by expanding and contracting the second transport cylinder 30 by the expansion / contraction driving device 40. In this way, by expanding and contracting the second transport cylinder 30, the grain can be discharged more easily regardless of the positional relationship with the loading platform or container of the truck as the discharge destination.

  The telescopic drive device 40 is disposed above the one end 32 a of the inner cylinder 32 of the second transport cylinder 30 in the vertical direction. For this reason, for example, compared with the case where the expansion-contraction drive apparatus 40 is arrange | positioned on the casing 23 of the 1st conveyance cylinder 20, the height of the combine 1 can be suppressed.

  Moreover, since the one end part 32a of the inner cylinder 32 of the second conveyance cylinder 30 is slightly enlarged and molded, the other end part 20b of the first conveyance cylinder 20 and the inner cylinder 32 can be fitted. For this reason, for example, other connection parts including a joint are not necessary for the connection between the first transfer cylinder 20 and the inner cylinder 32. For this reason, the number of parts used for the combine 1 can be reduced. Moreover, since the 1st conveyance cylinder 20 and the inner side cylinder 32 can be connected directly, the leakage of the air in connection parts, such as a joint, can be suppressed, and it can suppress that the conveyance efficiency of a grain falls.

  In addition, since the one end 32a of the inner cylinder 32 of the second conveyance cylinder 30 is inserted and connected to the other end 20b of the first conveyance cylinder 20, even when the second conveyance cylinder 30 is expanded or contracted, Friction does not occur in the first transport cylinder 20. Further, the inner diameter d1 of the first conveying cylinder 20 and the inner diameter d1 of the outer cylinder 31 of the second conveying cylinder 30 are the same, and the internal pressure (the air blower 60 blows air) in the first conveying cylinder 20 and the second conveying cylinder 30. Air pressure) does not decrease. Thereby, since the grain speed of a grain does not fall at the time of conveyance, the combine 1 prevents the clogging of a grain with sufficient wind force, and can discharge a grain smoothly.

  Further, the step between the one end portion 32a of the inner cylinder 32 of the second conveying cylinder 30 and the first conveying cylinder 20 is reduced, and the difference between the inner diameter d1 of the first conveying cylinder 20 and the inner diameter d2 of the inner cylinder 32 is continuous. To change. For this reason, it can reduce that the grain conveyed is damaged by the level | step difference in the connection part of the 1st conveyance cylinder 20 and the inner side cylinder 32. FIG. Moreover, since the level | step difference in the 1st conveyance cylinder 20 and the 2nd conveyance cylinder 30 which are the flow paths of the air ventilated from the air blower 60 is reduced, the pressure loss of air is reduced.

  Further, the support member 22 supports the curved portion 21 of the first transfer cylinder 20 from below, and the first transfer cylinder 20 is held in a horizontal state from the contact position with the support member 22 to the other end 20b. . This prevents the other end 20b of the first transfer cylinder 20 from being twisted with respect to the one end 30a of the second transfer cylinder 30 regardless of the extending direction of the second transfer cylinder 30. 20 can be prevented from being bent or bent. For this reason, the wind force from the air blower 60 can be supplied stably. Moreover, the rigidity of the bending portion 21 can be increased by supporting the bending portion 21 of the first transport cylinder 20 from below by the support member 22.

1 Combine (airframe)
2 Airframe frame 5 Threshing device 7 Glen tank (grain storage device)
20 1st conveyance cylinder 20b Other end part 21 Curved part 22 Support member 24 Linear part 30 2nd conveyance cylinder 30a One end part 31 Outer cylinder 31a One end part 31b Other end part 32 Inner cylinder 32a One end part 32b Other end part 35 Taper 40 Expansion / contraction Driving device 43 Motor 60 Blower 70 Discharge device 71 Discharge port 72 Shuter 80 Unloader panel switch 90 Control device

Claims (3)

A grain storage device (7) for storing the grain, and a first transport cylinder (20) disposed at the rear of the grain storage device (7) and having one end connected to the grain storage device (7). And a second transport cylinder (30) having one end connected to the other end of the first transport cylinder (20) and having a discharge device (70) for discharging the grain to the outside of the other end. In a combine provided with a blower (60) for supplying air for grain transportation into the first transport cylinder (20) and the second transport cylinder (30),
A rotation drive device (175) for rotating the second transport cylinder (30) about the vertical axis (Y) is located above the central portion in the vertical direction of the grain storage device (7). A combine characterized by the arrangement. A cylindrical frame (135) that rotatably supports the second transport cylinder (30), and a rear part that supports the frame (135) on the machine body frame (2) on the rear side of the grain storage device (7). A frame (160), and a lift driving device (170) for rotating the second transport cylinder (30) so that the discharge device (70) moves up and down,
The elevating drive device (170) is disposed above a support plate (164) provided on the upper portion of the rear frame (160), and the rotation drive device (175) is disposed below the support plate (164). The combine according to claim 1 disposed in   The combine according to claim 2, wherein the rear frame (160) is connected to a threshing device (5) provided on a side of the grain storage device (7).

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