GB2170266A - Pivot joint and method of assembling - Google Patents

Pivot joint and method of assembling Download PDF

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Publication number
GB2170266A
GB2170266A GB08601246A GB8601246A GB2170266A GB 2170266 A GB2170266 A GB 2170266A GB 08601246 A GB08601246 A GB 08601246A GB 8601246 A GB8601246 A GB 8601246A GB 2170266 A GB2170266 A GB 2170266A
Authority
GB
United Kingdom
Prior art keywords
retainer ring
opening
bearing
pivot joint
stepped
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.)
Granted
Application number
GB08601246A
Other versions
GB8601246D0 (en
GB2170266B (en
Inventor
Anthony Lee Garman
Jr Charles Robert Sturtz
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.)
Clark Michigan Co
Original Assignee
Clark Michigan Co
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 Clark Michigan Co filed Critical Clark Michigan Co
Publication of GB8601246D0 publication Critical patent/GB8601246D0/en
Publication of GB2170266A publication Critical patent/GB2170266A/en
Application granted granted Critical
Publication of GB2170266B publication Critical patent/GB2170266B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/006—Pivot joint assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2350/00—Machines or articles related to building
    • F16C2350/26—Excavators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

A pivot joint (15) for connecting together two relatively movable members (12, and 14) includes a stepped opening (13) through one of such members (14) with an inwardly extending flange (26) at one end of such opening, an intermediate section (27), and a threaded section (28) at the opposite end of said opening. A retainer ring (48) threaded into said threaded section (28) captures a bearing mechanism (36) between said threaded retainer ring (48) and a further retaining ring (32) abutting said flange (26). A method of assembling the pivot joint is also disclosed. <IMAGE>

Description

SPECIFICATION Pivot joint and method of assembling This invention relates to a pivot joint for connecting together two structural members for relative movement about a common axis and a method of assembling same. This pivot joint is particularly useful in earthworking machinery but is not limited to such use.
U.S. Patent Application Serial No.
06/533,456 Siewert et al filed November 21, 1983 shows a pivot joint mechanism which employs a pair of cone-type locks at the respective ends of a pivot pin, which can be readily assembled to hold internal parts in place. Each cone-type lock includes an inner male member and an outer female member and both locks can be locked by means of a single bolt extending through a bore in the pin and a nut on such bolt. U.S. Patent 4,243,341 Kabay et al shows a pivot joint that includes a stepped diameter pin, one end of which is fastened to one of the structural members and the other end of which is received in an end cap that serves to preload a tapered roller bearing assembly mounted on the other structural member.
The present invention provides a pivot joint for connecting a pair of structural members for relative movement about a common axis, one of said structural members having two laterally spaced portions, each of said spaced portions having a circular opening therein with the centres thereof aligned along said axis, the other of said members located in part between said spaced portions, said other member having a stepped circular opening with the centre thereof aligned along said axis, a cylindrical pin extending through said three openings, and a bearing retainer mechanism interposed in part between said pin and said stepped circular opening, comprising an inwardly extending flange at one end of said stepped opening, an intermediate section of said stepped opening having a larger diameter than the inner margin of said flange, a third section of said stepped opening having a larger diameter than said intermediate section, said third section being internally threaded, a retainer ring in abutment with said flange, a second retainer ring threaded into said third section, and at least one bearing member captured between said two retainer rings.
The present invention also provides a method for assembling a pivot joint connecting a pair of structural members, one of said members having a stepped opening through it including an inwardly projecting flange at one end of the opening, an intermediate diameter section, and a third section at the other end of larger diameter which is threaded, comprising placing a retainer ring in the opening in abutment with said flange, placing at least one bearing member in the opening in contact with said retainer ring, threading a threaded retainer ring into said threaded section of the opening, and capturing said at least one bearing member between said flange and said threaded retainer ring.
The present invention will be more particularly described with reference to the accompanying drawings, in which: Figure 1 is an axial view, in section except for the pin, of a pivot joint according to the present invention, and Figure 2 shows a second embodiment of the invention.
Fig. 1 of the drawings shows a bearing retainer mechanism 10 pivotally connecting two relatively movable members 12 and 14 to form a pivot joint 15 in accordance with the present invention. Member 12 is bifurcated and includes two spaced apart flanges 12a and 1 2b which may be part of a bracket on a loader bucket. The other member 14 is a housing which is located in part between flanges 12a and 12b, and may be connected to a bellcrank which pivots the bucket. Each of the flanges 12a and 12b and housing 14 has a circular opening therethrough, indicated by the numerals 1 6a and 1 6b respectively for the two flanges and the numeral 13 for a stepped opening through housing 14, with the centres of such openings coinciding along an axis 20 extending transversely to planes coinciding with said movable members.
The stepped opening 13 through housing 14 includes an inwardly extending flange 26 at one end, an intermediate diameter section 27, and a third larger diameter section 28 which is threaded. When assembled the joint 15 includes a retainer ring 32 having a shoulder portion 34 which abuts flange 26; this retainer ring carries a dynamic seal 29. A bearing assembly 36 has an outer race or cup 36a which abuts retainer ring 32 and a cone assembly 36d which is inclusive of rollers 36b and cone 36c. A spacer 40 abuts race 36a.
A second bearing assembly 42 has an outer race or cup 42a which abuts spacer 40, and a retainer ring 48 abuts race 42a. Bearing assembly 42 also includes a cone assembly 42d which is inclusive of rollers 42b and cone 42c. Retainer ring 48 has an external threaded portion 48a which mates with an internal threaded portion 28a in housing 14, and carries a dynamic seal 49. Both seals 29 and 49 are pressed in place prior to the assembly of the bearing retainer mechanism as described below.
A cylindrical pivot pin 22, which is the principal structural member of the pivot joint 1 5, is located within openings 16a, 13 and 16b coaxially with axis 20, and is the part on which housing 14 is journaled for oscillatory pivotal movement.
In assembling the pivot joint the first steps are done with the housing 14 separate from flanges 1 2a and 12b. The first step is to in sert retainer ring 32 with seal 29 into opening 13 until shoulder 34 on the retainer ring abuts flange 26. Then, in order, the outer race 36a of bearing 36, the cone assembly 36d, the spacer 40, the cone assembly 42d of bearing 42, and the outer race 42a of bearing 42 are assembled in housing 14. Then retainer ring 48, which has external threads 48a to mate with the threads 38a on section 28, with seal 49, is assembled to retain the bearings and related parts in place and to preload the bearings.
Next spacers 50 and 54 which carry seals 52 and 56 respectively are inserted through seals 29 and 49 respectively until said spacers abut cones 36c and 42c respectively.
Housing 14 with the bearing retainer mechanism 10 and bearings assembled on it along with spacers 50 and 54 is aligned so that the axis of opening 13 is coaxial with axis 20 and thus is coaxial with openings 26a and 16b in bifuracted frame member 12. Pin 22 is then inserted through members 12a, 14 and 12b respectively and can be used secured to either 12a or 12b or both by any retention method desired to keep the pin from turning and axially lock the pin in place.
Fig. 2 of the drawings shows another embodiment 115 of the present invention which differs from that of Fig. 1 in that there are two separated parts 1 10aand 11 lOb to the bearing retainer mechanism 110 which corresponds to bearing retainer mechanism 10 of the first embodiment. The part 110b not shown in Fig. 2 is a mirror image of part 1 10a which is shown in Fig. 2. Structural member 112 is bifurcated and includes separated portions 1 12a and 112b; 1 12b does not appear in Fig. 2. Portion 114 corresponds to structural member 14 of Fig. 1 and is long enough to carry the separated parts 1 10a and 110b of bearing retainer mechanism 110.The pivot pin which is indicated by the numeral 122 in Fig. 2 is longer to provide for the two parts of the bearing retainer mechanism 1 10a and 110b at the opposite ends of the mechanism 110. Bearing assembly 136 and its components parts 136a, 136b, 136c and 136d, and bearing assembly 142 and its component parts 142a, 142b, 142c and 142d correspond to bearing assemblies 36 and 42 respectively of Fig. 1 and their component parts. Stepped openings 1 13a and 1 13b (the latter not shown in Fig. 2) in portion t14 correspond to stepped opening 13 in portion 14 of Fig. 1.
The aim of the present invention is a pivot joint construction and method for securing or retaining a bearing assembly on one of two pivotally connected structural members, and in this disclosure the said one member is either housing 14 of Fig. 1 or housing 114 of Fig.
2. It is also necessary of course to secure the pivot pin to the other structural member.
It is preferred that threads 28a and 48a be American National buttress threads but this invention is not limited to such threads and other types of threads may be utilized in carrying out this invention. Both embodiments of this invention include lubrication openings, 61 and 161 respectively, connecting with spaces between the rows of rollers for admitting lubricant to the bearings.
While we have described and illustrated herein preferred embodiments, and the best mode, shown in Fig. 1, of our invention, it will be understood by those skilled in the art that modification may be made. For example, it will be appreciated that a single anti-friction bearing may be used in some pivot joints instead of two rows of roller bearing as disclosed herein, and further that the invention is not limited to tapered roller bearings but is useful also for other types of bearings.

Claims (1)

1. A pivot joint for connecting a pair of structural members for relative movement about a common axis, one of said structural members having two laterally spaced portions, each of said spaced portions having a circular opening therein with the centres thereof aligned along said axis, the other of said members located in part between said spaced portions, said other member having a stepped circular opening with the centre thereof aligned along said axis, a cylindrical pin extending through said three openings, and a bearing retainer mechanisam interposed in part between said pin and said stepped circular opening, comprising an inwardly extending flange at one end of said stepped opening, an intermediate section of said stepped opening having a larger diameter than the inner margin of said flange, a third section of said stepped opening having a larger diameter than said intermediate section, said third section being internally threaded, a retainer ring in abutment with said flange, a second retainer ring threaded into said third section, and at least one bearing member captured between said two retainer rings.
2. A pivot joint according to claim 1, wherein two outer bearing races and an intervening spacer are captured between said two retainer rings.
3. A pivot joint according to claim 1 or 2, wherein said threads are buttress threads.
4. A pivot joint according to claim 1, wherein there are two stepped circular openings, said cylindrical pin extends through both said circular openings, and two bearing retainer mechanisms are interposed in part between said pin and said two stepped openings respectively, comprising for each of said stepped openings all the features following the word comprising in claim 1.
5. A pivot joint according to claim 4, wherein two outer bearing races and an intervening spacer are captured between each said retainer ring and its corresponding second re tainer ring respectively.
6. A method for assembling a pivot joint connecting a pair of structural members, one of said members having a stepped opening through it including an inwardly projecting flange at one end of the opening, an intermediate diameter section, and a third section at the other end of larger diameter which is threaded, comprising placing a first retainer ring in the opening in abutment with said flange, placing at least one bearing member in the opening in contact with said retainer ring, threading a threaded retainer ring into said said threaded section of the opening, and capturing said at least one bearing member between said flange and said threaded retainer ring.
7. A method according to claim 6, which includes the intermediate step of placing a spacer between said bearing member and said threaded retainer ring.
8. A method according to claim 6, 7 or 8, which includes the intermediate steps of placing a first bearing race in abutment with said first retainer ring, installing a first cone assembly having first rollers and a first cone so that said first rollers contact said first bearing race, placing a spacer in abutment with said first bearing race, installing a second cone assembly having a second cone and second rollers so that said second cone abuts said first cone, placing a second bearing race in abutment with said spacer and in contact with said second rollers, and capturing said two bearing races and said spacer between said threaded retainer ring and said first retainer ring by tightening said threaded retainer ring against said second bearing race, the said tightening also preloading said bearing members.
10. A method for assembling a pivot joint between a pair of structural members, one of said members having two stepped openings through it the same as described for the single opening in claim 6, comprising each of the steps specified in claim 6 for the two stepped openings respectively.
11. A pivot joint for connecting a pair of structural members for relative movement about a common axis, substantially as herein described with reference to Fig. 1 or Fig. 2 of the accompanying drawings.
12. A method for assembling a pivot joint, substantially as herein described with reference to Fig. 1 or Fig. 2 of the accompanying drawings.
GB08601246A 1985-01-25 1986-01-20 Pivot joint and method of assembling Expired GB2170266B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69501185A 1985-01-25 1985-01-25

Publications (3)

Publication Number Publication Date
GB8601246D0 GB8601246D0 (en) 1986-02-26
GB2170266A true GB2170266A (en) 1986-07-30
GB2170266B GB2170266B (en) 1988-06-08

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ID=24791201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08601246A Expired GB2170266B (en) 1985-01-25 1986-01-20 Pivot joint and method of assembling

Country Status (8)

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JP (1) JPS61175317A (en)
AU (1) AU586371B2 (en)
BR (1) BR8600178A (en)
CA (1) CA1259649A (en)
DE (1) DE3600459A1 (en)
FR (1) FR2576648A1 (en)
GB (1) GB2170266B (en)
ZA (1) ZA86198B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006127878A3 (en) * 2005-05-24 2007-04-19 Timken Co Bearing arrangement for the through shaft in a tandem axle drive
GB2498460A (en) * 2012-01-16 2013-07-17 Romax Technology Ltd A bearing arrangement including a retainer
WO2014098546A1 (en) * 2012-12-19 2014-06-26 Valdés Hernández José Leoncio Journal bearing
US9726211B2 (en) 2013-03-15 2017-08-08 Schlumberger Technology Corporation 5 degrees of freedom alignment-correcting preloaded bearing connection system
US11815131B2 (en) * 2022-03-14 2023-11-14 Aktiebolaget Skf Seal assembly with a load bearing ring

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029221A1 (en) * 2006-06-26 2007-12-27 Robert Bosch Gmbh Fastening device for use in electrical machine, has plate nut provided as axial stop for roller bearing, and thread arranged at outer circumference of plate nut, where nut covers surface of bearing in mounted condition
FR2952982A1 (en) * 2009-11-26 2011-05-27 Alstom Transport Sa Roller bearing for traction engine of railway vehicle, has roller arranged inside cylindrical body of bearing case whose inner surface comprises female thread in which screw thread is housed
CN109210092B (en) * 2018-10-15 2020-04-10 常州宝菱重工机械有限公司 Assembly method of mandrel with groove on peripheral surface and bearing seat assembly with flexible seal

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB337948A (en) * 1929-10-24 1930-11-13 Rowbotham And Company Ltd T Improvements in roller-bearing wheels
GB554769A (en) * 1942-03-31 1943-07-19 Robert Edward Joy Improvements in and relating to bearings
GB670342A (en) * 1950-02-12 1952-04-16 Dunlop Rubber Co Improvements in assemblies of co-axial, relatively rotatable members
GB889176A (en) * 1959-09-14 1962-02-07 Neville Clyde Mccallum Improvements in or relating to bearing assemblies
GB1288794A (en) * 1968-11-26 1972-09-13
GB1429074A (en) * 1972-03-06 1976-03-24 Rockwell International Corp Bearing systems
US4507005A (en) * 1983-11-21 1985-03-26 Clark Equipment Company Pivot joint

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492416A (en) * 1983-04-18 1985-01-08 D. W. Nicholson Corporation Cable wheel mounting for cable cars

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB337948A (en) * 1929-10-24 1930-11-13 Rowbotham And Company Ltd T Improvements in roller-bearing wheels
GB554769A (en) * 1942-03-31 1943-07-19 Robert Edward Joy Improvements in and relating to bearings
GB670342A (en) * 1950-02-12 1952-04-16 Dunlop Rubber Co Improvements in assemblies of co-axial, relatively rotatable members
GB889176A (en) * 1959-09-14 1962-02-07 Neville Clyde Mccallum Improvements in or relating to bearing assemblies
GB1288794A (en) * 1968-11-26 1972-09-13
GB1429074A (en) * 1972-03-06 1976-03-24 Rockwell International Corp Bearing systems
US4507005A (en) * 1983-11-21 1985-03-26 Clark Equipment Company Pivot joint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006127878A3 (en) * 2005-05-24 2007-04-19 Timken Co Bearing arrangement for the through shaft in a tandem axle drive
GB2498460A (en) * 2012-01-16 2013-07-17 Romax Technology Ltd A bearing arrangement including a retainer
GB2498460B (en) * 2012-01-16 2014-06-18 Romax Technology Ltd Bearing retainer
WO2014098546A1 (en) * 2012-12-19 2014-06-26 Valdés Hernández José Leoncio Journal bearing
US9726211B2 (en) 2013-03-15 2017-08-08 Schlumberger Technology Corporation 5 degrees of freedom alignment-correcting preloaded bearing connection system
US11815131B2 (en) * 2022-03-14 2023-11-14 Aktiebolaget Skf Seal assembly with a load bearing ring

Also Published As

Publication number Publication date
ZA86198B (en) 1986-09-24
DE3600459A1 (en) 1986-07-31
GB8601246D0 (en) 1986-02-26
JPS61175317A (en) 1986-08-07
AU5181786A (en) 1986-07-31
GB2170266B (en) 1988-06-08
AU586371B2 (en) 1989-07-06
CA1259649A (en) 1989-09-19
BR8600178A (en) 1986-09-30
FR2576648A1 (en) 1986-08-01

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PCNP Patent ceased through non-payment of renewal fee