JP2007037442A - Tine fixing structure of raking reel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and readily fix a large number of tines in a tine fixing structure of a raking reel with which a large number of tines are fixed in parallel to tine fixing rods install and supported along a right and a left reel frames. <P>SOLUTION: The tine fixing structure of a raking reel has a constitution that fixing holes vertically passing through the tine fixing rods 33 are formed, connection parts 34c inserted from the under side into the fixing holes 35 and projected are formed on the tops of the tines 34, elastically deformable slip-off stopping pawls 38 to be connected from the upper parts to the holes edges of the fixing holes 35 are formed on the upper end projected parts of the connected parts 37, connection parts 40 to be connected to support parts 36 extended from the tine fixing rods 33 downward are formed at parts separated downward from the connection parts 34c in the tines 34 to prevent shakes of the tines 34 longitudinally right and left by connections between the support parts 36 and the connection parts 40. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tine mounting structure of a take-up reel provided in a normal combine or the like.

The above-described take-up reel is configured by mounting a large number of tines in parallel on a tine mounting rod that is horizontally supported across the left and right reel frames. Conventionally, the tine is bolted to the tine mounting rod one by one. (For example, refer patent document 1).
Japanese Utility Model Publication No. 2-102928

  However, there are dozens of tines to be attached to one tine mounting rod, and a considerable number of tines must be attached to the entire take-up reel. To rotate the bolt using a tool such as a wrench or spanner It took a lot of labor and time. In addition, when the tine is damaged at the harvest site, it takes a long time for the harvesting operation to be replaced.

  The present invention has been made paying attention to such points, and an object thereof is to allow a large number of tines to be easily and easily attached.

A first invention is a tine mounting structure for a take-up reel in which a plurality of tines are mounted in parallel on a tine mounting rod that is horizontally supported across left and right reel frames,
An attachment hole penetrating vertically is formed in the tine attachment rod, and a connecting portion is formed on the upper portion of the tine so as to be inserted and protruded from below into the attachment hole. An elastically deformable retaining claw that engages from above is formed at the hole edge of the tine, and a support portion that extends downward from the tine attachment rod is provided at a location that is spaced downward from the coupling portion of the tine. An engagement portion to be engaged is formed, and the tine is prevented from swinging back and forth and left and right by the engagement between the support portion and the engagement portion.

  According to the above configuration, when the tine is attached, when the tine is pushed into the attachment hole of the tine attachment rod from below, the retaining claw at the upper end of the tine penetrates the attachment hole while being elastically deformed by insertion into the attachment hole. Is elastically restored above and locked to the hole edge. By this tine insertion operation, the engaging portion of the tine is engaged with the supporting portion of the tine mounting rod, and the attached tine is prevented from coming out downward by the retaining claw and is engaged with the supporting portion. Due to the engagement with the part, the tine is prevented from swinging back and forth and left and right.

  When replacing the attached tine, the tine may be pulled downward while deforming the retaining claw protruding above the attachment hole with fingers or pliers.

  Therefore, according to the first invention, it is possible to easily and easily attach a large number of tines to the tine attaching rod, to improve the assembling workability of the take-up reel, and to change the tine at the harvesting site for a long time. It can be done in a short time without requiring work downtime.

According to a second invention, in the first invention,
The connecting portion of the tine is configured in a round shaft shape.

  According to the above configuration, it is possible to easily form the attachment hole in the tine attachment rod by drilling.

According to a third invention, in the first or second invention,
The supporting portion extending downward from the tine mounting rod is formed of a vertical plate material that supports the upper portion of the tine from the front surface, and the lower edge of the supporting portion and the engaging portion of the tine are engaged with each other. It is comprised so that it may be made to do.

  According to the above configuration, when the scraping reel rotates and performs the scraping operation, the crop scraping reaction force acts forward on the tine, but the support portion extended downward from the tine mounting rod is the tine. The upper part of the handle is supported by contact from the front, and the tine does not deform forward, and exhibits a reliable scraping function.

According to a fourth invention, in the first or second invention,
An engaging hole penetrating vertically is formed at the lower end of the support portion extending downward from the tine mounting rod, and a portion below the connecting portion of the tine is inserted into the engaging hole as the engaging portion. It is configured to be engaged.

  According to the above configuration, the tine is firmly held in its standing posture by the insertion engagement with the attachment hole in the tine attachment rod and the engagement hole at the lower end of the support portion, that is, the hole provided at a position far apart vertically, It can cope with large scratching loads.

A fifth invention is the fourth invention, wherein:
The engagement hole is configured as a non-circular hole, and the cross-sectional shape of the engagement portion in the tine is configured as a non-circular shape that is inserted and engaged with the engagement hole.

  According to the above configuration, the engagement between the engagement hole of the support portion and the engagement portion of the tine in the tine mounting rod prevents the tine from rotating around the vertical axis center and the function of maintaining the standing posture of the tine. This is effective in ensuring a stable tine scraping posture and exerting a reliable scraping function.

  1 and 3 show the entire side surface of the ordinary combine according to the present invention, and FIG. 2 shows the entire plane. This combine is equipped with an operating unit 3 with a cabin, an axial flow type threshing device 4 and a grain tank 5 on a machine body 2 having a pair of left and right crawler traveling devices 1, and in front of the threshing device 4. A feeder 6 is connected to the part for swaying the chopped product around the fulcrum p, and a reaping part 7 having a cutting width substantially corresponding to the width of the machine body is connected to the front end of the feeder 6. .

  The cutting unit 7 has a structure in which a cutting device 12 is stretched across a pair of right and left weed frames 11, and an auger 13 that feeds the harvested crop to the start end of the feeder 6 is installed. The cutting part 7 is swung up and down around the fulcrum p integrally with the feeder 6 by the expansion and contraction operation of the hydraulic cylinder 14 installed between the feeder 6 and the machine body 2. Above the front part of the mowing unit 7, a scraping reel 15 for scraping and raising a planted crop backward is provided. The feeder 6 is provided with a chain-type scraping conveyor 6a, and a horizontal rod 13b is mounted horizontally on the screw 13a of the auger 13 to prevent winding of a long crop.

  In front of the mowing device 12, a pair of left and right guide plates 16 that guide the crops planted to the mowing device 12 are disposed in a cantilevered manner. As shown in FIG. 4, an inclined guide portion 16 a is formed at the front end portion of the guide plate 16 so as to face the tip, and the crops of each strip are guided in sliding contact with the left and right guide plates 16, and are harvested. 12 and is surely cut in a state of being sandwiched from the left and right by the guide plate 16. As shown in FIG. 5, each guide plate 16 is attached to a substrate 17 connected to the lower side of the mowing device 12 via a bracket 18, and the angle of the bracket 18 around the fulcrum b is adjusted, and the guide plate 16 The height of the guide plate 16 and the ground angle can be arbitrarily adjusted by adjusting the angle of the guide plate 16 around the fulcrum b.

  As shown in FIG. 5, the mowing device 12 is configured as a clipper that reciprocally moves the cutting blade 23 relative to a finger-type receiving blade 22 that is connected and fixed to a horizontally long receiving base 21. The cradle 21 is configured such that a bent side 21b for securing strength is obliquely extended rearward and downward at the rear end of the upper side 21a for mounting the cradle, and the ground height is set immediately after the cradle 21. A rocking fulcrum c of the ground plate 24 for detecting the height is provided. According to this configuration, the bent side 21b of the cradle 21 is inclined rearward and downward, so that it is easy to be guided backward and downward without adhesion of soil to the bent side 21b during forward traveling, and the front side by the bent side 21b. There will be less earth pushing. The rotation of the ground plate 24 around the swing fulcrum c is detected by an angle sensor or a switch (not shown), and the fact that the cutting unit 7 is too close to the ground is detected as the swing of the ground plate 24. Then, the hydraulic cylinder 14 is operated and controlled, and the cutting unit 7 is lifted and driven so that the cutting unit 7 is prevented from entering the ground.

  The take-up reel 15 is supported via a support bracket 27 on the front part of a pair of left and right support arms 26 that can swing up and down around a fulcrum d, and the support arm 26 is swung up and down by a hydraulic cylinder 28. Thus, the height of the scraping action of the picking reel 15 can be changed, and by adjusting the slide of the support bracket 27 along the support arm 26, the position of the scraping action can be adjusted back and forth. Yes. At the base of the support arm 26, an operation arm 30 that is swingably driven back and forth around the fulcrum e by an electric motor (not shown) is provided, and the operation arm 30 and the support bracket 27 are interlocked by an operation rod 31. The support bracket 27 is slidably adjusted back and forth by driving and swinging the operation arm 30 back and forth.

  The take-up reel 15 itself is composed of a reel frame 32 having a hexagonal side surface, a tine mounting rod 33 horizontally mounted on each corner of the reel frame 32, and a plurality of tines mounted in parallel on the tine mounting rods 33. 34. Although a detailed description of the structure is omitted, the tine mounting rod 33 is rotated relative to the reel frame 32 in the reverse direction at the same speed in response to the forward revolution of the reel frame 32, so that the tine regardless of the rotation of the reel frame 32. The attachment rod 33 is configured to be always in a fixed posture, and thereby the tine 34 attached to each tine attachment rod 33 is always maintained in a downward scraping posture.

  Next, some of the attachment structures of the tine 34 to the tine attachment rod 33 will be exemplified.

  [First example]

  6 and 7 show a first example of a tine mounting structure. In this example, the tine mounting rod 33 is made of a round pipe material, and mounting holes 35 made of round holes at a predetermined pitch are formed in the longitudinal direction so as to penetrate vertically, and on the lower surface of the tine mounting rod 33 A support portion 36 made of a vertical plate material is displaced to the front side of the machine body of the mounting hole 35 and is fixed by welding along the longitudinal direction of the mounting rod and extends downward. In the mounting hole 35, the upper mounting hole 35 (a) has a smaller diameter than the lower mounting hole 35 (b).

  The tine 34 is resin-molded, and a prism portion 34b and a connecting portion 34c to the tine mounting rod 33 are formed on the upper portion of the main portion 34a that is gently curved toward the rear in the direction of scraping. ing.

  The connecting portion 34c includes a large-diameter shaft portion 37b fitted into the lower attachment hole 35 (b) of the tine attachment rod 33 and a small-diameter shaft portion 37a fitted into the upper attachment hole 35 (a). A pair of front and rear retaining claws 38 are formed on the small-diameter shaft portion 37a so as to be locked from above at the hole edge of the upper mounting hole 35 (a). The tip of the retaining pawl 38 is formed in a tapered shape, and a slit 39 is formed between the both retaining pawls 38. By elastically deforming both the retaining pawls 38 inwardly, the toe is attached to the upper side. The diameter is reduced so as to pass through the hole 35 (a).

  An engaging recess 40 is formed at the front portion of the lower portion of the rectangular column portion 34b as an engaging portion that is locked from below to the lower side of the support portion 36 that extends downward from the tine mounting rod 33. A raised portion 40a is formed at the left and right central portions of the engagement recess (engagement portion) 40, and a notch 42 for engaging the raised portion 40a is cut out at the lower side of the support portion 36.

  The tine attachment structure in this example is as described above, and when attaching the tine to the tine attachment rod 33, the connecting portion 34c of the tine 34 is inserted into the attachment hole 35 from below, so that the retaining pawl 38 of the connecting portion 34c is retained. Passes through the upper mounting hole 35 (a) while reducing its diameter, and the tip of the rectangular column part 34b is in contact with the lower surface of the tine mounting rod 33 so that the toes pass from the upper mounting hole 35 (a). Since the protrusions and the retaining claws 38 are elastically restored and locked to the hole edges, the tine 34 cannot be pulled out and moved upward. The retaining pawl 38 can pass through the lower attachment hole 35 (b) without being deformed.

  At the same time when the connecting portion 34 c is inserted into the mounting hole 35, the engaging recess (engaging portion) 40 is engaged with the lower side of the support portion 36 and the raised portion 40 a is engaged with the notch 42, thereby the tine 34. Positioning in the front-rear and left-right directions is performed and rotation of the connecting portion 34c around the longitudinal axis is also prevented, and the tine 34 is attached to a predetermined vertical posture in which the main portion 34a is curved backward.

  The prismatic part 34b of the tine 34 attached as described above has its front face opposed to the rear face of the support part 36, and when the reaction force is applied to the tine 34 toward the front, the prismatic part 34b Is supported by the back surface of the support portion 36 and can sufficiently resist a large scratching load. Even if a lateral component of the reaction force is applied, deformation of the tine 34 from side to side is prevented by the engagement of the raised portion 40 a and the notch 42, and a large load is applied to the connecting portion to the mounting hole 35. Is reduced.

  If the tine 34 is damaged and needs to be replaced, it can be easily removed by pulling the tine 34 downward while pinching the retaining claw 38 protruding above the tine mounting rod 33 with fingers or pliers to reduce the diameter. Can be removed. In this case, the retaining pawl 38 drawn into the tine mounting rod 33 returns to expand in diameter, but the lower mounting hole 35 (b) has a large diameter, so that the tine 34 can be extracted without being caught.

  [Second example]

  FIG. 8 shows a second example of the tine mounting structure. In this example, the tine attachment rod 33 is formed in a rectangular tube shape by refraction welding a metal plate material, and a rectangular tube-like support portion 6 is continuously provided on the lower side thereof. A mounting hole 35 is vertically formed through the upper side 33a and the lower side 33b of the upper rectangular tube portion, and an engagement hole 41 is provided on the lower side of the support portion 36 located below the mounting hole 35. In this case, the mounting hole 35 includes a small-diameter upper mounting hole 35 (a) formed in the upper side 33a and a large-diameter lower mounting hole 35 (b) formed in the lower side 33b.

  The tine 34 is resin-molded, and a connecting portion 34c having a round shaft shape is formed on an upper portion of a main portion 34a that is gently curved toward the rear in the scraping direction. The connecting portion 34c includes a large-diameter shaft portion 37b fitted into the lower attachment hole 35 (b) of the tine attachment rod 33 and a small-diameter shaft portion 37a fitted into the upper attachment hole 35 (a). A pair of front and rear retaining claws 38 are formed on the small-diameter shaft portion 37a so as to be locked from above at the hole edge of the upper mounting hole 35 (a). The tip of the retaining pawl 38 is formed in a tapered shape, and a through hole 42 penetrating left and right is formed between the both retaining pawls 38 so that the both retaining pawls 38 are crushed inward and deformed. Thus, the toe is reduced in diameter so that it can pass through the upper mounting hole 35 (a).

  In this example, a pair of left and right engaging projections 43 are provided as engaging portions at the outer peripheral diagonal position near the lower end of the large-diameter shaft portion 37b, and the engaging holes provided in the support portion 36 of the tine mounting rod 33 are provided. 41 is comprised by the non-circular hole which engages the large diameter shaft part 37b and the engagement protrusion 43 with which it was equipped.

  The tine attachment structure in this example is as described above. When attaching the tine to the tine attachment rod 33, the connecting portion 34c of the tine 34 is inserted into the engaging hole 41 and the attaching hole 35 from below to connect the connecting portion 34c. The retaining pawl 38 contacts the upper mounting hole 35 (a) and passes through while being deformed in a reduced diameter, and the upper end of the main portion 34 a of the tine 34 is in contact with the lower surface of the support portion 45 so that the toe is on the upper side. By protruding from the attachment hole 35 (a), the retaining claw 38 is elastically restored and locked to the edge of the hole, so that the tine 34 can be pulled out downward and cannot be moved upward. Also in this case, the retaining pawl 38 can pass through the engaging hole 41 and the lower mounting hole 35 (b) without being deformed.

At the same time when the connecting portion 34 c is inserted into the mounting hole 35, an engaging protrusion (engaging portion) 43 is engaged with the engaging hole 41 formed on the lower side of the support portion 36, thereby the front and rear and the left and right sides of the tine 34. In addition to positioning in the direction, rotation of the tine 34 around the axis of the connecting portion is prevented, and the tine 34 is attached in a predetermined vertical posture curved backward.

  The lower end portion of the large-diameter shaft portion 37b of the tine 34 attached as described above is supported by the engagement hole 41 of the support portion 6 and can sufficiently counter the large scraping load acting on the tine 34.

  If the tine 34 is damaged and needs to be replaced, it can be easily removed by pulling the tine 34 downward while pinching the retaining claw 38 protruding above the tine mounting rod 33 with fingers or pliers to reduce the diameter. Can be removed. In this case, the retaining pawl 38 drawn into the tine attachment rod 33 returns to an enlarged diameter, but the lower attachment hole 35 (b) and the engagement hole 41 have a large diameter, so that the tine 34 is not caught. Can be extracted.

  [Other examples]

  (1) As shown in FIG. 9A, the take-up reel 15 is supported on a support arm 46 that is swung back and forth by an electric cylinder 45, or as shown in FIG. It can also be configured to be able to adjust the front-rear position by being supported on a support arm 47 having a parallel quadruple link structure that is swung back and forth by the cylinder 45. According to this, the scraping reel 15 can be moved back and forth smoothly with less resistance compared to the slide type, and the electric cylinder 45 can be of a small output.

  (2) As shown in FIGS. 10 and 11, the cutting portion 7 is connected to a support frame 49 provided on a support base 48 provided at the front end portion of the machine body 2 so as to swing up and down around a fulcrum q. You can also. According to this, it is not necessary to support the large weight of the cutting part 7 with the front side plate of the threshing device 4, which is effective for simplifying the structure of the threshing device 4. In this configuration, the feeder 6 is connected and supported by the mowing unit 7 and is inserted into the front part of the threshing device 4 so as to be able to tilt up and down and withdraw.

  (3) As shown in FIG. 12, a screw conveyor can be used as the scraping conveyor 6a built in the feeder 6. According to this, the number of parts is smaller than that of the chain-type scraping conveyor 6a, the structure can be simplified, there are few places where crops are wound or clogged, and the inspection port of the feeder 6 is opened. Cleaning can be easily performed by air blow or the like.

Left side view of the entire combine Top view of the entire combine Right side view of the entire combine Plan view showing part of the mowing device Side view of mowing device (A) Vertical side view and (B) Vertical front view showing the tine mounting structure Disassembled perspective view of tine mounting structure (A) vertical side view, (b) vertical front view, and (c) transverse plan view of the main part showing another embodiment of the tine mounting structure Side view showing another embodiment of the take-up reel back-and-forth movement structure Whole side view of a combine equipped with a cutting part support structure of another embodiment Overall plan view of a combine equipped with a cutting portion support structure of another embodiment Overall side view of a combine equipped with a feeder of another embodiment

Explanation of symbols

32 reel frame 33 tine mounting rod 34 tine 34c connecting part

35 Mounting hole 36 Supporting portion 38 Retaining claw 40 Engaging portion (engaging recess)
41 engaging hole 43 engaging portion (engaging protrusion)

Claims (5)

A tine mounting structure for a take-up reel in which a plurality of tines are mounted in parallel on a tine mounting rod that is horizontally supported across the left and right reel frames,
An attachment hole penetrating vertically is formed in the tine attachment rod, and a connecting portion is formed on the upper portion of the tine so as to be inserted and protruded from below into the attachment hole. An elastically deformable retaining claw that engages from above is formed at the hole edge of the tine, and a support portion that extends downward from the tine attachment rod is provided at a location that is spaced downward from the coupling portion of the tine. A tine mounting structure for a take-up reel, wherein an engagement portion to be engaged is formed, and the tine is prevented from swinging back and forth and left and right by the engagement between the support portion and the engagement portion.   2. The tine mounting structure for a take-up reel according to claim 1, wherein the connecting portion of the tine is formed in a round shaft shape.   The supporting portion extending downward from the tine mounting rod is formed of a vertical plate material that supports the upper portion of the tine from the front surface, and the lower edge of the supporting portion and the engaging portion of the tine are engaged with each other. 3. A tine mounting structure for a take-in reel according to claim 1 or 2, wherein the tine mounting structure is configured to be made to operate.   An engaging hole penetrating vertically is formed at the lower end of the support portion extending downward from the tine mounting rod, and a portion below the connecting portion of the tine is inserted into the engaging hole as the engaging portion. The tine mounting structure for a take-up reel according to claim 1 or 2, wherein the structure is configured to be engaged.   5. The take-up reel according to claim 4, wherein the engagement hole is configured as a non-circular hole, and a cross-sectional shape of the engagement portion in the tine is configured as a non-circular shape that is inserted and engaged with the engagement hole. Tine mounting structure.

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