JP2008178329A - Apparatus for unloading grain in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a horizontal unloading cylinder at a folding side, constituted so that the horizontal unloading cylinder for unloading the grain from a grain tank may be folded in two, to be smoothly turned by a small operation force in an apparatus for unloading grain in a combine harvester. <P>SOLUTION: The apparatus for unloading the grain in the combine harvester is constituted as follows. An operation tool 25 for carrying out the turning operation of the second horizontal unloading cylinder 11b from an operating part 4 side is pivotally supported by the base terminal side of the second horizontal unloading cylinder 11b, and the second horizontal unloading cylinder 11b is constituted so as to be turnably operated through a lever fulcrum P contacting with a midway part of the operation tool 25. When the midway part of the operation tool 25 is brought into contact with the lever fulcrum P to change the posture of the second horizontal unloading cylinder 11b from a housed posture to a grain-unloading posture, the tip of the operation tool 25 is regulated so as to protrude from the extended line X of the circumference of the first horizontal unloading cylinder 11a in the threshing part 5 side in the plane view and so as to face to the operating part 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combine grain discharging apparatus configured to be able to fold a horizontal discharge cylinder that discharges a grain from a grain tank into two.

  In a conventional combine, a sideways discharge cylinder that discharges the grain from the grain tank is connected to the first sideways discharge cylinder on the base end side and the tip of the first sideways discharge cylinder. Contained with a horizontal discharge cylinder, the second horizontal discharge cylinder is folded in a straight line extending from the tip of the first horizontal discharge cylinder and folded in parallel with the first horizontal discharge cylinder The posture can be changed to the posture, and an operation lever is pivotally supported on the proximal end side of the second lateral discharge cylinder, and an intermediate portion of the operation lever is locked to a locking member provided on the second lateral discharge cylinder By doing so, the second horizontal discharge cylinder in the retracted position and the operation lever are configured to be able to swing together, so that the second horizontal discharge cylinder is linear with respect to the first horizontal discharge cylinder. (See, for example, Patent Document 1) .

Further, a handlebar for swinging the second sideways discharge cylinder on the distal end side with respect to the first sideways discharge cylinder on the base end side is provided from the base end side of the second sideways discharge cylinder. There is known a configuration in which the discharge tube is configured to extend in a direction opposite to the grain conveyance direction of the sideways discharge cylinder (for example, see Patent Document 2).
JP-A-10-127152 (page 3-4, FIGS. 6-9) JP 2001-251950 A (page 3, FIGS. 1 to 4)

  However, in the above-mentioned Patent Document 1, when the second horizontally oriented discharge tube that is folded and in the retracted posture is linearly extended with respect to the first horizontally oriented discharge tube, While pressing the operation lever pivotally supported on the base end side of the second lateral discharge cylinder, the second lateral discharge cylinder must be swung. The sideways discharge cylinder could not be swung easily. When the second sideways discharge cylinder is swung about 90 degrees from the retracted position by pressing the operation lever, the operation lever can push the operation lever over the connecting portion of both sideways discharge cylinders. Therefore, further swinging of the second sideways discharge cylinder must be performed by locking the intermediate portion of the operation lever to a locking member provided at the base end of the second sideways discharge cylinder. there were.

  Further, in Patent Document 2, the distal end portion of the handle bar provided for swinging the second lateral discharge cylinder on the distal end side, that is, the grip operation portion of the handle bar is in a direction that is largely separated from the control portion. When the operator who has boarded the step that forms the floor surface of the combine control section is operating the handlebar, the operator is forced into an unstable working posture by leaning on the pretreatment device side from the control section. It was not an easy task to swing the second horizontal discharge cylinder, which has a built-in spiral shaft and is heavy.

  The present invention has been made to solve the above-mentioned problems, and includes a first lateral discharge cylinder that discharges grain from a grain tank, and a vertical provided on the tip side of the first horizontal discharge cylinder. A grain discharge posture comprising a second lateral discharge cylinder coupled to the shaft in a swingable manner, and extending the second lateral discharge cylinder linearly from the tip of the first lateral discharge cylinder; In the combine grain discharging apparatus configured to be changeable to a storage posture folded to the side of the sideways discharge cylinder, the second sideways discharge cylinder is operated on the base end side of the second sideways discharge cylinder. An operation tool for swinging from the side of the part is pivotally supported, and the second lateral discharge cylinder is configured to be swingable via a lever fulcrum that abuts the middle part of the operation tool. In order to change the posture of the horizontal discharge cylinder from the retracted position to the grain discharging position, When abutted against the developing unit, and the first, characterized in that faces the steering tip of the operation member protrudes from the extension line of the threshing portion side outer periphery of the first lateral discharge tube in a plan view.

  The second feature is that the vertical axis is used as a lever fulcrum that abuts the middle part of the operation tool.

  According to the first aspect of the present invention, the second lateral discharge cylinder is disposed on the base end side of the second lateral discharge cylinder that is swingably connected to the vertical axis provided on the distal end side of the first lateral discharge cylinder. An operating tool for swinging operation from the control unit side is pivotally supported, and the second lateral discharge cylinder is configured to be swingable via a lever fulcrum that contacts the middle part of the operating tool. When the middle part of the operation tool is brought into contact with the lever fulcrum to change the posture of the horizontal discharge tube from the retracted posture to the grain discharge posture, the tip of the operation tool in plan view is the threshing portion of the first horizontal discharge tube Since it protrudes from the extension line on the outer side of the side and faces the control section, when the operator who is on the control section of the combiner operates the operation tool, the lever action through the lever fulcrum that abuts on the middle part thereof, Smoothly swing the heavy second sideways discharge cylinder with less operating force Excellent workability because it also be that there is no strong an unstable work attitude of leaned over from the steering unit.

  And according to invention of Claim 2, the said vertical axis | shaft can be comprised at low cost, without providing a special component by utilizing as a lever fulcrum which contact | abuts the middle part of an operation tool.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a combine 1 with a part omitted, and the combine 1 is a control unit provided with a seat 3 on which an operator is seated on one side of a front part of a body 2 supported by a crawler traveling device (not shown). 4 and a pre-processing unit 6 that conveys the harvested culm to the threshing unit 5 provided on the other side of the control unit 4 while trimming the culm.

The grain that has been threshed and selected in the threshing unit 5 is temporarily stored in a grain tank 7 provided at the rear of the seat 3, and the threshed waste is provided in the rear part of the machine body 2. It is discharged from the post-processing unit 8 to the outside of the apparatus. Moreover, in order to discharge | emit the grain temporarily stored in the grain tank 7 to transport means, such as a truck and a trailer, the grain discharger 9 which can be raised and lowered freely is provided.

  More specifically, the grain discharging device 9 includes a vertical spiral cylinder 10 erected from the lower rear side of the grain tank 7 and a horizontal grain discharge supported on the upper part of the vertical spiral cylinder 10 so as to be undulated and swiveled. An auger 11 is provided. In addition, the substantially middle part of the grain discharge auger 11 can be supported by an auger receiver 12 erected from the side frame of the threshing part 5.

  The grain discharge auger 11 includes a drive side discharge cylinder 11a as a first lateral discharge cylinder having a drive side spiral shaft 13 (see FIG. 2) which is a first spiral axis, and the drive side discharge cylinder 11a. 1 can be folded substantially in parallel as shown by a solid line in FIG. 1, and when it is extended and connected linearly as shown by a two-dot chain line in FIG. And a driven side discharge cylinder 11b as a second horizontal discharge cylinder having a driven side spiral axis 14 (see FIG. 2) which is a second helical axis.

  FIG. 2 is a perspective view showing a configuration around the connecting portion J of both cylinders 11a and 11b in a retracted posture in which the driven-side discharge cylinder 11b is folded substantially parallel to the drive-side discharge cylinder 11a. The driven spiral shaft 14 provided in the side discharge cylinder 11b is movable in the axial direction and coupled to the drive side spiral shaft 13 provided in the drive side discharge cylinder 11a. A grain conveying spiral shaft (not shown) is provided which is fitted to the spiral shaft 14a and transmits the rotation of the connecting spiral shaft 14a.

  And the bearing part 15 which hold | maintains the drive side helical shaft 13 rotatably is provided in the front-end | tip part (folding base point part) of the drive side discharge cylinder 11a. The bearing portion 15 includes a guide portion 15 b that fits the bearing 15 a of the drive side spiral shaft 13 and the connecting spiral shaft 14 a of the driven side spiral shaft 14.

  Further, the driven discharge cylinder 11b in the retracted posture is swung as indicated by the two-dot chain line in FIG. 1 at the distal end of the drive discharge cylinder 11a and the proximal end of the driven discharge cylinder 11b. When the grain discharge posture is extended linearly from the tip of the drive side discharge cylinder 11a, flanges 16a and 16b that form the connecting portions (surfaces) of both the cylinders 11a and 11b are provided.

  Further, above and below the flange 16a of the drive-side discharge cylinder 11a and the flange 16b of the driven-side discharge cylinder 11b, a fulcrum shaft that pivotally connects the driven-side discharge cylinder 11b to the drive-side discharge cylinder 11a. Holders 18a and 18b and holders 19a and 19b are fixed to insert and support the vertical axis 17, respectively.

  The upper and lower holders 19a and 19b fixed to the flange 16b of the driven-side discharge cylinder 11b are fitted in the upper and lower holders 18a and 18b fixed to the flange 16a of the drive-side discharge cylinder 11a. The vertical axis 17 can be inserted and supported in 18a, 18b, 19a, 19b.

  Further, when the driven-side discharge cylinder 11b is swung at the front end portion of the drive-side discharge cylinder 11a so as to extend linearly from the front-end of the drive-side discharge cylinder 11a to have a grain discharging posture, this driven-side discharge cylinder A lock fitting 21 for holding the grain discharge posture of 11b is attached, and a clamp arm 22 provided in the lock fitting 21 is locked to a locking member 23 provided at the base end portion of the driven-side discharge cylinder 11b, Next, the grain discharge posture of the grain discharge auger 11 can be maintained by rotating the lock lever 24 in the fixing direction.

  Then, on the lower side of the machine body 2 on the lower side of the base end side of the driven side discharge tube 11b, the base end portion of the rod-like operation tool 25 capable of swinging the driven side discharge tube 11b from the control unit 4 side is pivotally supported, In the retracted posture state in which the driven-side discharge cylinder 11b is folded substantially parallel to the drive-side discharge cylinder 11a, the grip portion B side of the rod-like operation tool 25 is closer to the control section 4 at the lower end on the front end side of the drive-side discharge cylinder 11a. The resin clamp 26 is provided so that it can be held. At this time, the rod-like operation tool 25 is held by the resin clamp 26 below the drive side discharge cylinder 11a and the driven side discharge cylinder 11b and in a substantially orthogonal state with both the discharge cylinders 11a and 11b. The resin clamp 26 is fitted to the lower surface side of an L-shaped holder 27 that is fixed to the drive side discharge cylinder 11a and close to the control unit 4.

  More specifically, the rod-like operation tool 25 described above is made of a round bar or pipe material formed by bending the holding part B side downward, and a plate 25a having a mounting hole (not shown) is fixed to the base end portion thereof. ing. In order to pivotally support the mounting hole of the plate 25a, a holder 28 is fixed on the outer side of the machine body 2 of the driven-side discharge cylinder 11b, and the plate 25a can be swung freely in the holder 28 and slightly. It is attached using the collar 29 and the bolt 30 while allowing vertical movement.

  Further, when the driven-side discharge cylinder 11b is folded in substantially parallel to the drive-side discharge cylinder 11a, a rod-like shape is used to prevent unnecessary swinging movement in the opening direction of the driven-side discharge cylinder 11b. A protrusion 31 is fixed on the upper surface of the operation tool 25 on the gripping part B side as a stopper for preventing the opening of the driven discharge cylinder 11b, and the protrusion 31 holds the rod-shaped operation tool 25 on the resin clamp 26. In this state, the resin clamp 26 comes into contact with the outside of the holder 27 to which the resin clamp 26 is fitted, and acts as an opening prevention stopper.

  Reference numeral 32 in the figure indicates that when the driven side discharge cylinder 11b is folded substantially parallel to the drive side discharge cylinder 11a, the driven side discharge cylinder 11b is held so as not to swing in the vertical direction, and the drive side discharge A discharge cylinder holding member that holds the space between the cylinder 11a and the driven side discharge cylinder 11b, and the discharge cylinder holding member 32 is attached to the drive side discharge cylinder 11a and is in contact with the driven side discharge cylinder 11b. A cushion material 33 is attached to the surface.

  By the way, when the grain temporarily stored in the grain tank 7 is discharged to a transportation means such as a truck or a trailer by the grain discharging device 9, it is folded substantially in parallel to the driving side discharge cylinder 11a. The driven-side discharge cylinder 11b is driven by swinging the driven-side discharge cylinder 11b in the retracted posture around the vertical axis 17 that is the swing fulcrum axis as shown by an arrow A shown by a two-dot chain line in FIG. It is set as the grain discharge attitude | position extended linearly from the front-end | tip of the side discharge cylinder 11a.

  In order to swing the driven-side discharge cylinder 11b as described above, first, the holding state of the rod-like operation tool 25 held by the resin clamp 26 is released, as shown in FIGS. The bar-like operating tool 25 is swung in the direction of arrow C shown in FIG. 4, and then the lower end portion P of the vertical axis 17 which is the rocking fulcrum shaft of the driven-side discharge cylinder 11b, that is, the driving side for inserting and supporting the vertical axis 17 The midway part of the rod-like operation tool 25 is brought into contact with the part of the lower end of the vertical axis 17 projecting downward from the lower holder 18b of the discharge cylinder 11a from the front side of the machine body 2.

  At this time, the front end portion of the rod-like operation tool 25 in plan view, that is, the gripping portion B side protrudes from the extension line X (see FIG. 4) on the outer periphery of the threshing portion 5 side of the drive side discharge cylinder 11a and faces the control portion 4 The operator who has boarded the control unit 4 of the combine 1 is not forced to take an unstable work posture by getting out of the control unit 4 when operating the rod-shaped operating tool 25.

  And since the lower end part P of the vertical axis | shaft 17 contact | abutted in the middle part of the rod-shaped operation tool 25 acts as a lever fulcrum of the rod-shaped operation tool 25 which pivotally supported the base end part on the base end side of the driven side discharge cylinder 11b. As shown by the arrow D in FIG. 5, when the handle B of the rod-like operation tool 25 is held and rotated clockwise in plan view, the weight of the weight is increased by the lever action via the lever fulcrum (P). Since the heavy driven discharge cylinder 11 can be smoothly swung with a small operating force, the workability is excellent.

  Furthermore, by utilizing the lower end portion P of the vertical axis 17 that is the swing fulcrum shaft of the driven-side discharge cylinder 11b as described above as the lever fulcrum of the rod-like operating tool 25, this lever fulcrum is not provided with any special parts. The upper end side of the vertical axis 17 does not protrude upward, and the cover is caught on the upper end of the vertical axis 17 when it is attached. Never become. Further, the lower end portion P of the vertical axis 17 with which the rod-shaped operating tool 25 abuts, that is, the portion serving as the lever fulcrum of the rod-shaped operating tool 25 is formed in a concave shape, thereby improving the engagement between the rod-shaped operating tool 25 and the lever fulcrum. It can also be made.

  Then, as described above, with the middle portion of the rod-like operation tool 25 in contact with the lower end portion P of the vertical axis 17 that is the lever fulcrum, the gripping portion B side of the rod-like operation tool 25 is clockwise in plan view. When the driven-side discharge cylinder 11b is swung about 180 degrees around the vertical axis 17 that is the rocking fulcrum shaft while being pushed, as shown in FIG. 6, the driven-side discharge cylinder 11b becomes the tip of the drive-side discharge cylinder 11a. It becomes the grain discharge posture extended linearly from.

  Thereafter, the rod-like operation tool 25 is held by the resin clamp 36 provided near the control unit 4 at the lower end of the driving side discharge cylinder 11a and the clamp arm 22 of the lock fitting 21 provided at the tip of the driving side discharge cylinder 11a. Is engaged with a locking member 23 provided at the base end portion of the driven side discharge cylinder 11b, and then the lock lever 24 is rotated in the fixing direction to connect the driven side discharge cylinder 11b to the drive side discharge cylinder 11a. The fixed grain discharging auger 11 can hold the grain discharging posture. The resin clamp 36 is fitted on the lower surface side of an L-shaped holder 27 that is fixed to the drive side discharge cylinder 11a and close to the control section 4.

  Thereafter, the grain discharge auger 11 connected and fixed in a straight line is raised to the upper limit position, and then the grain discharge auger 11 is swung to a standby position such as a truck or trailer which is a grain transporting means. The grain temporarily stored in the grain tank 7 can be discharged by being lowered to a high position and stopped.

The top view of a combine. The perspective view which shows the structure of the connection part periphery of a grain discharge cylinder. The perspective view of the connection part periphery of the grain discharge cylinder which shows the effect | action structure of a rod-shaped operation tool. The top view of the connection part periphery of the grain discharge cylinder which shows the structure of a rod-shaped operation tool. The top view of the connection part periphery of the grain discharge cylinder which shows the effect | action structure of a rod-shaped operation tool. The top view of the grain discharge auger in a grain discharge posture.

Explanation of symbols

4 Control part 5 Threshing part 7 Grain tank 11a 1st sideways discharge cylinder (drive side discharge cylinder)
11b Second lateral discharge cylinder (driven discharge cylinder)
17 Vertical axis 25 Operation tool P Insulator fulcrum X Extension line (threshing part side outer periphery of drive side discharge tube)

Claims (2)

  A first horizontal discharge cylinder (11a) that discharges the grain from the grain tank (7) and a vertical axis (17) provided on the tip side of the first horizontal discharge cylinder (11a) are swingably connected. A second horizontal discharge cylinder (11b), and a grain discharge posture for extending the second horizontal discharge cylinder (11b) linearly from the tip of the first horizontal discharge cylinder (11a); In the combine grain discharging apparatus configured to be able to change the storage posture folded to the side of the one lateral discharge cylinder (11a), on the proximal end side of the second horizontal discharge cylinder (11b), A lever fulcrum (P) which pivotally supports an operating tool (25) for swinging the second lateral discharge cylinder (11b) from the control section (4) side and abuts on the middle part of the operating tool (25). The second sideways discharge cylinder (11b) is configured to be swingable through the second, and the second When the middle part of the operation tool (25) is brought into contact with the lever fulcrum (P) to change the posture of the horizontal discharge tube (11b) from the retracted position to the grain discharge position, the operation tool (25) in plan view A combine grain discharging apparatus characterized in that the tip protrudes from the extension line (X) on the outer periphery of the threshing part (5) side of the first lateral discharge cylinder (11a) and faces the control part (4).   The combine grain discharging apparatus according to claim 1, wherein the vertical axis (17) is used as an insulator fulcrum (P) that abuts on a middle part of the operation tool.

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