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WO1997016959A1 - Presse a balles de forme arrondie avec rouleaux arriere a double support - Google Patents

Presse a balles de forme arrondie avec rouleaux arriere a double support Download PDF

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Publication number
WO1997016959A1
WO1997016959A1 PCT/US1996/016380 US9616380W WO9716959A1 WO 1997016959 A1 WO1997016959 A1 WO 1997016959A1 US 9616380 W US9616380 W US 9616380W WO 9716959 A1 WO9716959 A1 WO 9716959A1
Authority
WO
WIPO (PCT)
Prior art keywords
support roll
assemblies
round baler
bearing
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1996/016380
Other languages
English (en)
Inventor
John Dale Anderson
Ferol S. Fell
Craig Pecenka
Howard Ratzlaff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hay and Forage Industries
Original Assignee
Hay and Forage Industries
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hay and Forage Industries filed Critical Hay and Forage Industries
Priority to AU74431/96A priority Critical patent/AU7443196A/en
Publication of WO1997016959A1 publication Critical patent/WO1997016959A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
    • A01F15/07—Rotobalers, i.e. machines for forming cylindrical bales by winding and pressing
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
    • A01F15/07—Rotobalers, i.e. machines for forming cylindrical bales by winding and pressing
    • A01F2015/078—Pressing chamber formed exclusively by flexible elements, e.g. belts
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
    • A01F15/07—Rotobalers, i.e. machines for forming cylindrical bales by winding and pressing
    • A01F2015/0795—Pressing chamber with variable volume
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
    • A01F15/08—Details
    • A01F15/18—Endless belts, rolls or the like
    • A01F2015/186—Constructional details of rollers or the bearings of the rollers of the press chamber

Definitions

  • the present invention relates generally to round balers and, more particularly, to a special bearing arrangement for the bale support roll of a round baler to reduce the risk of fires caused by undetected contamination, failure, and overheating of current bearing assemblies for such rolls.
  • the bearing assemblies for the bale support roll on a round baler are typically exposed to exceptionally high operating loads and contamination from trash, crop material and other debris. Once contaminated with debris, the bearings may fail and quickly overheat, leading to possible fires.
  • an important object ofthe present invention is to provide a way of decreasing the risk of fire from failed bearings at the journal points of the support roll on a round baler.
  • Another important object ofthe present invention is to provide structure for rotatably mounting the support roll to the sidewalls, which can withstand the relatively high loads and contamination associated with the support roll.
  • a further object of the invention is to increase the time for the operator to detect a contaminated and failing bearing before conditions become so bad that the failure starts a fire.
  • an object ofthe present invention is to improve upon conventional round balers by reducing shut-down time associated with failure ofthe current single bearing assemblies.
  • the round baler has bale forming mechanism cooperating with first and second laterally spaced sidewalls to define a baling chamber.
  • the mechanism includes a support roll located in a lower portion of the chamber to carry weight ofthe bale as it is formed.
  • the baler includes a first pair of bearing assemblies for rotatably supporting one end ofthe support roll on the first sidewall, and a second pair of bearing assemblies for rotatably supporting the other end ofthe support roll on the second sidewall.
  • the support roll may be entrained by a number of transversely spaced belts and positioned adjacent the crop infeed opening ofthe baling chamber. If desired, the support roll may be carried on the tailgate ofthe baler.
  • each pair of bearing assemblies includes an inboard assembly in juxtaposition with an outboard assembly.
  • the support roll is preferably tubular and sealingly receives the juxtaposed bearing assemblies therein so that the outboard assemblies seal the inboard assemblies from environmental contamination, while the exposed, outboard assemblies may be readily inspected by the operator.
  • a transversely extending stationary through-shaft is concentrically disposed within the roll to ensure proper alignment ofthe bearing assemblies inte ⁇ osed between the through- shaft and support roll.
  • FIG. 1 is a vertical cross-sectional view of a round baler having a support roll which is provided with the double bearing support structure constructed in accordance with the principles ofthe present invention, the near sidewall being removed to reveal internal details of baler construction;
  • FIG. 2 is a fragmentary, horizontal cross-sectional view ofthe support roll supported by a pair of bearing assemblies at each end thereof, in accordance with the present invention, particularly illustrating the constructional details of the preferred support roll and structure for mounting the same to the baler;
  • FIG. 3 is an enlarged, fragmentary, horizontal cross-sectional view ofthe right end of the support roll depicted in FIG. 2, particularly illustrating the internal details ofthe bearing assemblies and the structure for fixing a through-shaft supporting the bearing assemblies to a support arm extending from the baler sidewall;
  • FIG. 4 is an end view ofthe right end ofthe support roll depicted in FIG.
  • FIG. 5 is side elevational view ofthe support arm, particularly illustrating the ring for co plementally receiving the marginally flattened end ofthe through-shaft;
  • FIG. 6 is an enlarged, fragmentary, horizontal cross-sectional view similar to FIG. 3, but illustrating prior art structure for supporting the support roll on the sidewall including a single bearing assembly and a stub shaft.
  • the round baler 10 selected for illustration generally includes a chassis 12 having ground wheels 14 and a forwardly extending tongue 16 that is adapted for connection with a towing vehicle (not shown).
  • the chassis 12 carries a pair of upright, laterally spaced sidewalls 18 and 20 (see also FIG. 2) which cooperate to define a space within which bale forming and bale wrapping operations may be carried out as the baler is advanced across a field.
  • the baler 10 further includes bale forming mechanism 22 for compacting and rolling crop material into a round bale.
  • the sidewalls 18,20 present stationary forward portions fixed to the chassis 12 by suitable means and rearward portions swingably attached to the forward portions by a pivot assembly 24.
  • the rearward portions of the sidewalls 18,20 cooperatively define a tailgate 26 which is swingable between an open, discharge position (not shown), in which the tailgate 26 has sufficiently raised to allow a completely formed bale to be discharged from the baler 10, and a closed, baling position (FIG. 1), in which bale wrapping and rolling operations are performed.
  • the sidewalls 18,20 cooperatively define a space within which bale forming and bale wrapping operations may be carried out.
  • the bale forming mechanism 22 and sidewalls 18,20 cooperate to define a so-called “variable chamber,” belt-type machine, wherein the baling chamber is initially relatively small and then grows progressively larger as the bale increases in diameter within the baler 10.
  • the principles ofthe present invention are also applicable to a "fixed chamber” machine in which the dimensions ofthe baling chamber are at least substantially constant throughout the baling cycle, with the diameter ofthe chamber corresponding substantially with the diameter ofthe full size bale when completed.
  • the bale forming mechanism 22 ofthe variable chamber baler illustrated herein include a series of cooperating belts and rolls supported by the sidewalls 18,20 for rolling and compacting a bale as it forms within the baler 10.
  • the baler 10 is provided with a plurality of laterally extending, stationary rolls including a lower drive roll 28, upper drive roll 30, idler rolls 32,34,36,38,40,42, a trash clearing roll 44, and a support roll 46.
  • the rolls 28-46 span the sidewalls 18,20 are arranged in a general circular pattern viewing FIG. 1 for guiding a plurality of endless, laterally spaced, side-by-side belts 48 as the belts 48 are driven linearly during bale formation and wrapping.
  • the trash clearing roll 44 includes a number of laterally spaced slats 50 received within the spaces defined between the belts 48 for clearing trash from the moving belts 48.
  • the bale forming mechanism further includes a pair of movable slack takeup rolls 52 and 54 mounted near the upper portion ofthe baler 10 on downwardly spring biased arm structure 56 to maintain tension on the belts 48, yet permit the paying out of stored slack as the bale increases in diameter during formation.
  • the belts 48 are looped under the lower drive roll 28, over the upper idler roll 38, and under the support roll 46 to present a pair of opposed, front and rear runs 48a and 48b, which are initially generally upright, as illustrated in phantom in FIG. 1, but which become bowed out in fore-and-aft directions, as illustrated in solid lines, as the bale grows beyond its initial starting core dimensions.
  • a pair of retaining rolls 58 and 60 are mounted on a second swingable arm structure 62 that is also spring biased downwardly to the phantom line position in FIG. 1; the retaining rolls 58, 60 receiving the belt runs 48a and 48b therebetween so as to form a baling chamber 64 between the runs 48a, 48b which is bounded at the sides by the sidewalls 18,20.
  • the chamber 64 assumes a generally upright, somewhat triangular configuration, as shown in phantom lines in FIG. 1, with the retaining rollers 58, 60 at the apex ofthe chamber 64. Thereafter, the chamber 64 becomes distended and circular in transverse configuration as the growing bale pushes forwardly on the belt run 48a and rearwardly on the belt run 48b to cause additional slack to be paid out and for the arm 62 to rise as additional hay is progressively added to the bale.
  • the chamber 64 is open at the bottom to present a crop infeed entrance 66 that is defined between the support roll 46 and a starter roller 68.
  • a crop pickup mechanism 70 supported generally below the entrance 66 and forwardly ofthe support roll 46, is operable to lift crop material off the field as the baler 10 is advanced and to feed the material into the chamber 64 via the entrance 66.
  • the drive rolls 28 and 30 are drivingly coupled with the power source of the towing vehicle to drive the belts 48 and are driven in clockwise directions viewing
  • FIG. 1 as indicated by arrows 72 and 74, respectively.
  • the front run 48a is moving generally downwardly and forwardly while the rear run 48b is moving generally upwardly. Consequently, hay introduced into the chamber 64 via the entrance 66 is acted upon by the upwardly moving rear run 48b and the downwardly moving front run
  • the bale which is illustrated in its final size in solid lines in FIG. 1 and is denoted by the numeral 78
  • a small amount of hay is sloughed off the bale 78 due to slippage between the belts 48 and the surface ofthe bale 78, and some of that residue tends to collect within the open area immediately above the roll 28 and forwardly of the front belt run 48a.
  • the cleanout discs broadly denoted by the numeral 80, in FIG. 3 which protrude into the collecting region and have their protruding portions moving downwardly in a direction oppositely to the upwardly moving belts 48 in that area.
  • Such cleanout discs 110 are the subject of United States Patent No. 5,097,760, entitled “POWERED TRASH REMOVAL APPARATUS FOR ROUND BALER", assigned of record to the assignee ofthe present invention.
  • the illustrated baler 10 is provided with a swingable twine dispensing tube 82 located adjacent the front ofthe baler which performs in the usual way for dispensing a supply of twine to the bale 78.
  • a net wrapping apparatus (not shown) similar in principle to the construction disclosed in United States Patent No. 5,216,873, entitled “WRAPPER CUTOFF MECHANISM FOR ROUND BALERS", assigned of record to the assignee of the present invention.
  • FIG. 6 shows that in the past, the support roll 46 has been rotatably mounted to the sidewalls 18,20 by a single pre-packed bearing assembly, generally designated 84, at each end ofthe support roll 46 (only the bearing assembly adjacent sidewall 20 being shown).
  • Each bearing assembly 84 includes an inner race 86, a concentric outer race 88 and a ball-bearing ring 90 inte ⁇ osed therebetween to allow relative rotational movement between the inner race 86 and outer race 88.
  • a pair of elastomeric, resilient sealing rings 92,94 are fixedly secured to the outer race 88 to span the annular opening between the inner and outer races 86,88.
  • the inner race 86 includes a pair of annular retainer clips 96,98 projecting from the outer periphery thereof to maintain the sealing engagement between inner race 86 and sealing rings 92,94. Although the rings 92,94 and clips 96,98 are in touching relationship, it will be appreciated that this configuration and corresponding frictional interengagement between the rings 92,94 and clips 96,98 do not hinder relative rotational movement between the inner and outer races.
  • a hub 100 seats within the tubular support roll 46 and is secured thereto by mechanical fasteners, such as set screws (not shown), although other suitable means may be used to secure the hub 100 to the support roll 46 such as welding or press-fitting the hub 100 therein.
  • the hub 100 snugly circumscribes the outer race 88 ofthe bearing assembly 84 such that the support roll 46, hub 100 and outer race 88 rotate with one another.
  • the hub 100 presents an inner step 102 which prevents lateral inward movement ofthe assembly 84.
  • a stub shaft generally designated 104, projecting laterally inwardly from each ofthe sidewalls 18,20.
  • a threaded set screw 106 extends through a chamfered opening 107 within the sidewall 20 and is received within internally threaded bore 108 at the end of the stub shaft 104 to fixedly secure the shaft 104 to the sidewall 20.
  • the shaft 104 includes cylindrical retainer steps 110 concentric with bore 106. The steps 110 have progressively smaller diameters as the support roll 46 is approached so that the innermost step has a diameter no greater than the inner race 86.
  • the shaft 104 further includes a frusto-spherical support portion 112 press-fit within the inner race 86 for supporting and preventing rotational movement of the latter.
  • the curvilinear periphery of frusto-spherical portion 112 provides self-alignment of the bearing assembly 84 relative to the shaft 104 and hub 100.
  • the periphery of the frusto-spherical portion 112 also tolerates some manufacturing inaccuracy (e.g., misalignment ofthe support roll 46 and hub 100, or shaft 104 and sidewall 20).
  • a first pair and a second pair of bearing assemblies are provided at opposite ends of the support roll 46 to rotatably couple the roll 46 to the sidewalls 18 and 20, respectively.
  • the second pair of bearing assemblies 116 includes a inboard bearing assembly 118 in juxtaposition with an outboard bearing assembly 120.
  • the bearing assemblies 118,120 are constructed in an identical manner to bearing assembly 84 illustrated in FIG. 6 and therefore will not be described in detail hereinbelow.
  • the bearing assemblies 118 and 120 include inner races 122 and 124, concentric outer races 126 and 128, and pairs of elastomeric, resilient rings 130,132 and 134,136 fixedly secured to the outer races 126 and 128 to span the annular opening between the inner and outer races, respectively.
  • the other pair of bearing assemblies 114 includes an outboard bearing assembly 138 in juxtaposition with an inboard bearing assembly 140. It will be appreciated that the pair of bearing assemblies 114 is identical in construction with the second pair of bearing assemblies 116, and accordingly, is not illustrated in detail nor discussed hereinbelow.
  • a first hub 142 and second hub 144 are fastened by mechanical fasteners, such as set screws (not shown), within the tubular support roll 46 at opposite ends thereof.
  • hub 144 presents a solid configuration, except for a central opening 145 which snugly circumscribes the outer races 126,128 of the bearing assemblies 118,120 such that the support roll 46, hub 144 and outer races 126, 128 rotate with one another.
  • the hub 144 presents an inner step 146 which prevents lateral inward movement ofthe assemblies 118,120.
  • the first hub 142 is similarly inte ⁇ osed between the bearing assemblies 138,140 and the support roll 46.
  • a stationary through-shaft 148 extends laterally between the sidewalls 18,20 to support the inner races 122,124.
  • the through-shaft 148 is mounted to first and second fore-and-aft support arms 150 and 152, respectively.
  • the arms 150 and 152 are attached to the rear portion ofthe sidewalls 18 and 20, respectively, to project forwardly from the tailgate 26 and dispose the support roll 46 along the lower boundary of the chamber 64 as illustrated in FIG. 1.
  • a set screw 154 extends through chamfered opening 156 in support arm 152, and is received within an internally threaded bore 158 at the end ofthe through-shaft 148 to fixedly secure the shaft 148 to the sidewall 20.
  • the other end of the through-shaft 148 (adjacent sidewall 18) is similarly secured to the support arm 150.
  • the through-shaft includes a marginally flattened end 160 adjacent sidewall 20 which is complementally received within a D-shaped opening 162 of ring 164.
  • the ring 164 is preferably welded to support arm 152 to further prevent rotational movement of the through-shaft 148 during baling operations. It will be appreciated that this configuration also facilitates assembly ofthe invention by preventing rotational movement ofthe shaft
  • the bearing assemblies 118, 120, 138, 142 are press-fit onto the through- shaft 148 such that rotational movement of the inner races is prevented.
  • retaining collars 166 and 168 are provided adjacent the outboard bearing assemblies 142 and 120, respectively, to prevent lateral outward movement ofthe assemblies toward the end ofthe shaft 148.
  • the retaining collars include a small lip 170 (see FIG. 3) which fits about a portion ofthe outboard bearing assembly 120.
  • a radially extending set screw 172 is threaded into the collar 168 to secure the same to the shaft 148.
  • FIG. 3 the annular spaced defined between the retaining collar 168 and hub 144 (FIG.
  • the double bearing assemblies 114 and 116 capably perform their journaling functions for the support roll 46, while at the same time reducing the risk of overheating at such journal points due to bearing contamination and failure.
  • the outer bearing 120 effectively seals and protects the inner bearing 118 from contact with dirt, grime and residue in the area. Because the outer race 128 of bearing 120 is pressed into the hub 144, the inner race 124 is fixed to the shaft 148, and the dual elastomeric seals 134,138 are present between the races 124, 128, it is very difficult for moisture and deleterious materials to gain access to the inner bearing 118.
  • the outer bearing 120 may begin to experience the negative effects of continuous exposure to environmental conditions over time, the inner bearing 118 tends to remain unaffected and in good operating condition. Consequently, the end ofthe support roll 148 remains journaled by at least one fully functional bearing if the other one starts to fail. Ideally, during routine inspections by the operator, the failing condition ofthe outer bearing 120 will be noticed and the operator will replace the distressed bearing before conditions become more serious.
  • the double bearing arrangement serves to extend the time available for the operator to notice the deteriorating outer bearing and replace it before the journal at that end ofthe support roll becomes so contaminated and disfunctional that it overheats sufficiently to cause a fire.
  • the fact that the load on the end ofthe support roll is shared by two bearings instead of concentrated in only one has the effect of prolonging bearing life and reducing the rate of heat build-up in a contaminated bearing.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

L'invention concerne une presse à balles de forme arrondie (10) dont le rouleau de support de balles (148) est soutenu à chaque exrémité par des ensembles supports doubles, là où les risques d'exposition permanente aux effets nuisibles des déchets, de la poussière et de la moisissure sont élevés. Chaque ensemble de supports doubles comprend un palier extérieur (120) qui reste exposé aux éléments à cet emplacement, ainsi qu'un deuxième palier amortisseur (118) dont la position rentrée le tient protégé des éléments. Le palier extérieur (120) sert non seulement de support au rouleau (148), mais également d'écran de protection du palier intérieur (118) contre la contamination.
PCT/US1996/016380 1995-11-09 1996-10-15 Presse a balles de forme arrondie avec rouleaux arriere a double support Ceased WO1997016959A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74431/96A AU7443196A (en) 1995-11-09 1996-10-15 Round baler having double bearing supported tailgate roller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55610195A 1995-11-09 1995-11-09
US08/556,101 1995-11-09

Publications (1)

Publication Number Publication Date
WO1997016959A1 true WO1997016959A1 (fr) 1997-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/016380 Ceased WO1997016959A1 (fr) 1995-11-09 1996-10-15 Presse a balles de forme arrondie avec rouleaux arriere a double support

Country Status (2)

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AU (1) AU7443196A (fr)
WO (1) WO1997016959A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170246B1 (en) 1999-05-24 2001-01-09 New Holland North America, Inc. Round baler idler roll mounting apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409783A (en) * 1981-08-24 1983-10-18 Hesston Corporation Rotary baler with improved roller mounts for endless belt replacement
US5347801A (en) * 1992-10-19 1994-09-20 Ford New Holland, Inc. Round baler belt idler roller mounting apparatus
US5448944A (en) * 1993-04-19 1995-09-12 Agco Corporation Bearing assembly with splined inner race and hay balers including same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409783A (en) * 1981-08-24 1983-10-18 Hesston Corporation Rotary baler with improved roller mounts for endless belt replacement
US5347801A (en) * 1992-10-19 1994-09-20 Ford New Holland, Inc. Round baler belt idler roller mounting apparatus
US5448944A (en) * 1993-04-19 1995-09-12 Agco Corporation Bearing assembly with splined inner race and hay balers including same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HESSTON CORPORATION, "560 Round Baler Parts Catalog", February 1990, pages 88-89. *
HESSTON CORPORATION, "565T Round Baler Parts Catalog", July 1994, pages 6-20 and 6-21. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170246B1 (en) 1999-05-24 2001-01-09 New Holland North America, Inc. Round baler idler roll mounting apparatus

Also Published As

Publication number Publication date
AU7443196A (en) 1997-05-29

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