JP6191709B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  As described in Patent Document 1, a combine equipped with an open / close type narrow guide device is known. This open / close type narrow guide device includes a weed guide by a rod member that can guide the planted cereals in the front-rear direction along the outside of the machine body from the harvesting part at the front part of the traveling machine body, and this weed guide for cutting guide The opening / closing mechanism for switching between the overhanging position and the storage position after the end of cutting and the open / close switching portion thereof can switch the weeding guide between the overhanging position and the storage position as required by lever operation.

JP 2009-261301 A

  However, since the opening / closing switching part of the weeding guide is exposed, even when the weeding guide is used, the opening / closing switching part of the opening / closing mechanism protrudes to the outer side of the cutting part, so that There was a case where the cereals were broken or pushed down by catching the standing cereals, and the opening / closing switching part was damaged.

The invention according to claim 1 is provided with a reaping part (3) that can be moved up and down in front of a travelable support machine base (2), and a threshing part (4) and a storage part ( 5) is provided on the left and right, and in the combine provided with the steering part (6) on the front side of the storage part (5), the combine is provided on the outer side of the cutting part (3), and the threshing part (3) in the cutting part (3) ( 4) A weeding guide (13) extending from the front end of the weeding frame (12) provided on the side portion to the rear of the fuselage along the outer side of the fuselage is projected outward to guide the planted cereals. An open / close mechanism (14) for switching between the overhang position and the stowed position on the cutting part (3) side is provided, and the open / close mechanism (14) is provided on the drive side link (14a) on the base side and the weed guide (13). It is a folding link having a driven link (14c) to be connected, and rotates together with the drive side link (14a). While axially supported by the outer portion of the drive shaft reaper the (14b) (3) for opening and closing the switching unit for rotating the drive shaft (14b) in forward and reverse directions provided (15), the reaper (3 ), A first attachment member (24) is provided at an outer position in the front-rear direction intermediate portion of the weeding frame (12) provided at the site on the threshing portion (4) side, and the rear end portion of the weeding frame (12) A second attachment member (23) is provided at an outer position of the auxiliary fastening body (16), and a front end portion of the auxiliary weed body (16) bypassing the outside of the opening / closing switching portion (15) is fastened to the first attachment member (24), The rear end portion of the auxiliary weed body (16) is fastened to the second mounting member (23), and the auxiliary weed body (16) is positioned at a position surrounding the operation area of the open / close switching portion (15) in plan view. provided at a position lower than the drive shaft (14b) of said opening and closing mechanism (14), the reaper (3) , A pipe-shaped cutting horizontal frame (21) that integrally connects between the weeding frames (12) at the left and right ends is provided, and the open / close switching portion (15) and the above-mentioned switching frame (21) are provided inside the cutting horizontal frame (21). An operation wire (22) connecting the lever (17) disposed in the control section (6) is inserted, and the cutting blade device (31) provided in the cutting section (3) is fixed to the fixed blade (33a) and the fixed section. The movable blade (33b) is in contact with the blade (33a) and can be reciprocated in the left-right direction. A vertical receiving portion (34) having a slide groove (34a) is fixed to the movable blade (33b). A slide member (35) made of a wear-resistant material such as polyurethane resin having a slide surface (35a) inscribed in the slide groove (34a) on both the left and right sides is provided, and a bearing such as a ball bearing is provided on the slide member (35). (36) embedded, the bearing ( 36) is supported by an eccentric pin (37a) formed on the crank arm (37) to constitute a cutting blade driving portion, and the slide member (35) is slid to the upper limit position by the rotation of the crank arm (37). In this case, the combine is characterized in that it is configured to protrude a predetermined height from the upper end of the receiving portion (34) .

  According to a second aspect of the present invention, the operation wire (22) is two operation wires that operate in opposite directions by the operation of the lever (17), and the rear of the weeding frames (12) at the left and right ends. The end is integrally supported from the lower side by a square pipe-shaped cutting horizontal frame (21), and the two operation wires (22) are inserted into the square pipe-shaped cutting horizontal frame (21). The combine is described in 1.

According to the invention described in claim 1, the operation wire (17) that connects the open / close switching portion (15) and the lever (17) disposed in the control portion (6) is connected to the pipe-shaped cutting horizontal frame (21). The position of the weeding guide (13) can be switched by operating the open / close switching part (15) arranged at the outer part of the cutting part (3) by operating the lever (17). it can.
Further, since the auxiliary weeding body (16) is provided at a position that bypasses the outside of the opening / closing switching unit (15) and surrounds the operation area of the opening / closing switching unit (15) in plan view, It is possible to prevent the planting cereal from being caught or pushed down by the opening / closing switching unit (15) and to prevent the opening / closing switching unit (15) from being damaged. Moreover, since the auxiliary weeding body (16) is provided at a position lower than the drive shaft (14b) of the opening / closing mechanism (14), it is possible to prevent the opening / closing mechanism (14) from being damaged due to interference with the projections on the field scene. it can.
When the eccentric pin (37a) revolves due to the rotation of the crank arm (37), the cutting blade device (31) moves the movable blade (33b) integral with the receiving portion (34) via the slide member (35). It is driven back and forth in the direction to cut the grain. At this time, since the slide surfaces (35a) on the left and right sides of the slide member (35) are inscribed in the slide grooves (34a) to apply driving force, the contact pressure between the slide surfaces (35a) and the slide grooves (34a) is reduced. The contact surface is averaged and kept small, and an increase in frictional force can be avoided. As a result, the durability, vibration proofing, and sound proofing of the cutting blade device (31) can be improved, the speed of the cutting operation can be increased, and the working efficiency of the combine can be improved.
Further, since the slide member (35) protrudes from the upper end of the receiving portion (34) by a predetermined height when it slides to its upper limit position, the slide groove (34a) is lowered when the slide member (35) is lowered. ) Foreign matter such as mud and dust that has entered the inside is pushed out from the upper end of the receiving portion (34), and wear of the slide surface (35a) due to the foreign matter can be prevented.

  According to the second aspect of the invention, in order to achieve the effect of the first aspect of the invention, the two operation wires (22) that operate in opposite directions by the operation of the lever (17) The pipe-shaped cutting horizontal frame (21) can be inserted and arranged.

Front view of applicable combine Plan view of the frame structure of the cutting part Main part plan view (a) and side view (b) of the open / close type narrow guide device Side view of mowing unit A arrow view of FIG. Fig. 5 Explanatory drawing of operation of cutting blade drive part (ac) Enlarged side view of the cutting blade drive An enlarged side view of a slide member according to another configuration Side view of the cutting part with a grounding member Enlarged cross-sectional view when mounting grounding member Side view of the cutting part with an excavator Front view of mowing unit with excavator Disassembled perspective view of excavator

  Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.

  As shown in the front view of the combine in FIG. 1, the combine 1 to which the present invention is applied includes a reaping portion 3 that can be adjusted up and down in front of a support machine base 2 that can run on a field, and a threshing that is arranged on the left and right behind the reaping portion 3. It comprises a part 4, a storage part 5, and a control part 6 arranged on the front side of the storage part 5, and is provided with an open / close narrow guide device 7 extending from the cutting part 3 to the side part of the threshing part 4.

  As shown in the plan view of the frame configuration of the cutting unit in FIG. 2, the cutting unit 3 is provided with a front-side extending and supporting weed bushes 11, 11 arranged in correspondence with the cutting strips. The openable narrow guide device 7 includes a weed guide 13 by a rod member that extends from the tip of the weeding frame 12 on the side of the threshing portion 4 on the uncut side to the rear part of the fuselage along the outer side of the fuselage. The opening / closing mechanism 14 by the folding link connected to the weed guide 13 and the drive shaft 14b of the drive side link 14a are rotated in the forward / reverse direction by the lever 17 for opening / closing operation disposed in the control unit 6. An auxiliary open / close switching unit 15 is provided, and an auxiliary herbaceous body (member) 16 is provided so as to bypass the open / close switching unit 15.

  Specifically, as shown in FIG. 3 of a plan view (a) and a side view (b) of the main part of the open / close narrow guide device, the cutting part 3 includes rear end portions of the left and right weed frames 12 and 12. A horizontal cutting frame 21 made of a square pipe that integrally supports the cutting frame from the lower side, and two operating wires 22 of a double-acting configuration that are connected to the hollow portion of the horizontal cutting frame 21 with a lever 17 for opening / closing operation, After 22 is inserted, it is guided in an L shape from the side end port to the rear side of the machine body.

The opening / closing mechanism 14 is configured to be foldable by connecting a driven link 14 c connected to the drive side link 14 a to the weed guide 13. A drive shaft 14b is integrally formed on the drive side link 14a, and the drive shaft 14b is pivotally supported on an attachment member (second attachment member) 23 provided at a position outside the rear end of the weed frame 12. The open / close switching unit 15 is integrally formed at the height position of the cutting horizontal frame 21 at the lower end of the drive shaft 14b by an isometric arm extending on the diameter line of the drive shaft 14b, and two operation wires 22 and 22 are provided at both ends thereof. A double-action link that is connected and rotated in the forward and reverse directions is configured.

The auxiliary weed body 16 is configured in such a manner that a rod member extending in the front-rear direction surrounding the operation region of the open / close switching portion 15 of the drive shaft 14b in a plan view is bent up and down and extends below the drive shaft 14b. The front end of the weed frame 12 is connected to the outer side of the intermediate position in the front-rear direction of the weed frame 12 by providing a mounting member (first mounting member) 24 by fastening a bolt 24 a, and the rear end is connected to the mounting member 23. The connection is made by fastening the bolt 23a.

  The open / close narrow guide device 7 having the above-described configuration opens and closes the open / close mechanism 14 via the two operation wires 22 and 22 that are double-acted by lever operation and the open / close switching unit 15, and protrudes outward from the airframe. The position of the weeding guide 13 can be switched between the exit position and the storage position close to the machine body. The opening / closing switching unit 15 of the opening / closing mechanism 14 has an auxiliary weeding body 16 with a rod member positioned on the outer periphery thereof. Interference with planted cereals is avoided.

  Therefore, it is possible to prevent the planted cereal from being caught and pushed down by the opening / closing switching unit 15 when the machine is moving forward and backward, and to prevent the opening / closing switching unit 15 from being damaged. Further, the auxiliary weed body 16 is configured to extend below the drive shaft 14 b of the opening / closing mechanism 14, so that the opening / closing mechanism 14 includes its opening / closing switching unit 15 and avoids interference with projections in the field scene. And damage due to interference and interference can be prevented.

  Moreover, since the said auxiliary weed body 16 was comprised so that attachment or detachment was possible via the attachment members 23 and 24 provided in the cutting part 3, the auxiliary weed body 16 can be removed from the attachment members 23 and 24, and can be handled alone. Therefore, it can be easily repaired or exchanged by removing it as necessary for maintenance due to contact deformation in conveyance, movement, and work.

(Mowing blade device)
Next, the cutting blade device of the cutting unit 3 will be described.

As shown in FIGS. 4 and 5, the cutting blade device 31 is close to the front side of the cutting transmission case 32 of the cutting unit 3 and extends across the entire width as shown in FIGS. 4 and 5. 33a and a movable blade 33b supported so as to be able to reciprocate left and right in contact with the fixed blade 33a, and a U-shaped receiving portion (receiving portion) in which a sliding groove 34a for driving left and right is formed on the movable blade 33b. 34 is fixed integrally by a mounting plate 34b.

U-shaped receiving portion 34, as shown in FIG. 6 a main part enlarged view of FIG. 5, extending Beauty in the vertical direction orthogonal to the reciprocating movement direction of the movable blade 33b, the slide groove 34a of the U-shaped receiving portion 34 An inscribed slide surface 35a is formed on both sides, and a slide member 35 made of a wear-resistant material such as polyurethane resin is provided so as to be slidable. A bearing 36 such as a ball bearing is embedded in the slide member 35, and a position of a radius R of the crank arm 37 is provided. A cutting blade drive unit is configured by pivotally supporting the eccentric pin 37a formed in the above.

  As shown in the operation explanatory diagrams (a to c) of FIG. 7, when the eccentric pin 37 a revolves with the radius R by the rotation operation of the crank arm 37, the cutting blade driving unit configured as described above is interposed via the slide member 35. The movable blade 33b integrated with the U-shaped receiving portion 34 is driven to reciprocate in the range of ± R in the left-right direction, and the harvested cereal culm is cut by the fixed blade 33a and the movable blade 33b.

  At this time, since the slide member 35 is inscribed in the slide groove 34a of the U-shaped receiving portion 34 with the slide surface 35a on one side thereof being inscribed, the contact pressure is uniformly averaged on the contact surface. Therefore, it is possible to avoid a large contact pressure and a corresponding increase in frictional force due to partial contact of the conventional circular member. Therefore, with the above configuration, the cutting blade device can be improved in durability, vibration and soundproofing, and the cutting work can be speeded up at a high speed while preventing impact damage, so the work efficiency of the combine can be improved. It becomes.

  Further, the cutting blade driving unit having the above-described configuration is configured such that the slide member 35 protrudes from the upper end of the U-shaped receiving unit 34 to a predetermined height B at the upper limit position as shown in the enlarged side view of FIG. Thus, when the slide member 35 is lowered, foreign matters such as mud and dust that have entered the slide groove 34a of the U-shaped receiving portion 34 are pushed out from the upper end, and the slide surface is kept clean. It is possible to prevent wear due to the presence of foreign matter on the surface.

  Further, as shown in the enlarged side view of FIG. 9, the slide member having another configuration has the same length and width as the slide member 35, and the left and right and upper and lower four surfaces are set as slide surfaces 35 a, thereby distinguishing the vertical and horizontal directions. Since it can be assembled easily and the surface pressure can be increased, high durability can be achieved. Further, a grid-like wear limit line 35b is provided so that the wear state can be confirmed, and the durability can be extended by rotating 90 ° and reassembling at the time of wear.

(Cutting ground member)
As shown in the side view of the cutting part in FIG. 10, a sledge-shaped grounding member 42 is provided on the front frame 41 made of a round pipe at the lower end of the cutting part 3, and this grounding member 42 is grounded to the field scene and the cutting part 3 is grounded. Is configured to be supported at a predetermined height position. As shown in the enlarged cross-sectional view of FIG. 11, the grounding member 42 is provided with a mounting member 43 that rises in an L shape from one side end portion thereof to form a long hole extending vertically, and a bolt at one position of the front frame. By fixing with B, the height can be adjusted from the lower mounting state (a) to the upper mounting state (b).

  With the grounding member 42 having the above configuration, during normal harvesting traveling, the grounding member 42 is attached at a lower position so that the lower end of the raising lug 44 is set at the upper part with a gap from the weeding frame 41 so that the cutting unit 3 is higher than the field scene. At the same time, when harvesting fully lying cereals, the grounding member 42 is mounted on the upper side, and the cutting unit 3 is held low so that the front frame 41 sinks into the field until the pulling lug 44 is placed on the lying culvert. To do.

  Since the conventional grounding member was configured to be adjustable in height under the weed frame 41, the weed frame 41 could not be lowered to the field scene, and could not cope with the harvesting of a completely lying cereal meal. However, by providing an adjustment allowance so that the grounding member can be fixed higher than the weeding frame at one side of the weeding frame 41 as described above, the mowing unit 3 is floated higher than the field scene by a lower attachment and is kept at a constant height. The harvesting can be carried out, and by holding the cutting unit 3 low so that the front frame 41 sinks into the field scene by the upper attachment, the harvesting running can be carried out while causing a completely lying cereal.

(Scraper)
Next, an excavator as a scraper of the cutting unit will be described.

  As shown in FIGS. 12 and 13, a side view and a front view of the mowing unit 3 include an external scraper excavator 51 as a scraper for stripping off mud and straw scraps on the road for cleaning the falling mud. Is provided.

  As shown in the exploded perspective view of FIG. 14, the excavator 51 is provided with arms 53, 53 on both sides of a semicircular scraper portion 52, and horizontally across the right and left weed ridges on the front portion of the cutting portion 3. It is connected to the movable blade 33b of the cutting blade device so as to be movable left and right. The excavator height is the lag action height, and by connecting externally so as to cover the lag action and prevent the mud from getting caught, the excavator and the cutting blade are linked and linked to separate the mud stuck to the road, You can collect mud that has fallen on the road, or drop it into the field and clean it.

  The excavator 51 is not limited to the above-described configuration, and may be configured to be installed and fixed on the left and right tip of the left and right side of the front frame and the side of the front frame, if necessary. By using the action, mud insertion can be prevented.

Reference Signs List 2 Support machine base 3 Cutting part 4 Threshing part 5 Storage part 6 Control part 12 Weeding frame 13 Weeding guide 14 Opening / closing mechanism 14a Drive side link 14b Drive shaft 14c Follow link 15 Opening / closing switching part 17 Lever 21 Cutting horizontal frame 22 Operation wire
23 mounting member (second mounting member)
24 mounting member (first mounting member)
31 cutting blade device
32 mowing transmission case
33a fixed blade
33b movable blade
34 U-shaped receiving part (receiving part)
34a slide groove
35 slide members
35a slide surface
36 bearings
37 crank arm
37a eccentric pin

Claims (2)

A mowing part (3) that can be moved up and down is provided in front of the movable support machine base (2), and a threshing part (4) and a storage part (5) are provided on the left and right behind the mowing part (3), and the storage is performed. In the combine provided with the control portion (6) on the front side of the portion (5), the combine portion is provided on the outer side of the reaping portion (3), and is provided at a site on the threshing portion (4) side in the reaping portion (3). The overhanging position and the cutting part (3) for guiding the planted cereal by extending the weeding guide (13) extending from the front end of the weeding frame (12) to the rear of the body along the outside of the body. An opening / closing mechanism (14) for switching to the storage position on the side is provided, and the opening / closing mechanism (14) includes a drive side link (14a) on the base side and a driven link (14c) connected to the weed guide (13). A folding link having a drive shaft (14b) that rotates integrally with the drive side link (14a). While axially supported by the outer part of the intake unit (3), opening and closing the switching unit for rotating the drive shaft (14b) in the forward and reverse direction (15) is provided, the threshing portion of the reaper (3) (4) A first attachment member (24) is provided at an outer position of the intermediate portion in the front-rear direction of the weed frame (12) provided at the side portion, and a second position is provided at an outer position of the rear end portion of the weed frame (12). An attachment member (23) is provided, and a front end portion of the auxiliary weed body (16) that bypasses the outside of the open / close switching portion (15) is fastened to the first attachment member (24), and the auxiliary weed body (16) The rear end portion is fastened to the second mounting member (23), and the auxiliary weed body (16) is positioned at a position surrounding the operation region of the opening / closing switching portion (15) in plan view. provided at a position lower than the drive shaft (14b), the reaper (3), the partial grass frame of left and right ends (12) A pipe-shaped cut horizontal frame (21) that integrally connects the two is provided, and the open / close switching unit (15) and the control unit (6) are arranged inside the cut horizontal frame (21). The operation wire (22) connecting the lever (17) is inserted, and the cutting blade device (31) provided in the cutting part (3) is brought into contact with the fixed blade (33a) and the fixed blade (33a). The movable blade (33b) is capable of reciprocating in the left-right direction. A vertical receiving portion (34) having a slide groove (34a) is fixed to the movable blade (33b), and the slide groove (34a ) Is provided with a slide member (35) made of a wear-resistant material such as polyurethane resin and formed on both the left and right sides, and a bearing (36) such as a ball bearing is embedded in the slide member (35), Insert the bearing (36) into the crank arm ( A cutting blade drive unit is pivotally supported by an eccentric pin (37a) formed on 37), and the receiving unit is moved when the slide member (35) is slid to the upper limit position by the rotation of the crank arm (37). The combine characterized by having the structure which protrudes predetermined height from the upper end of (34) .   The operation wires (22) are two operation wires that operate in opposite directions by the operation of the lever (17), and the rear ends of the weed frames (12) at the left and right ends are cut into a square pipe shape. The combine according to claim 1, wherein the two operating wires (22) are inserted into the square-pipe-shaped cutting horizontal frame (21) by being integrally supported from the lower side by a horizontal frame (21).

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