US3587886A - Boom assembly - Google Patents

Boom assembly Download PDF

Info

Publication number
US3587886A
US3587886A US799429A US3587886DA US3587886A US 3587886 A US3587886 A US 3587886A US 799429 A US799429 A US 799429A US 3587886D A US3587886D A US 3587886DA US 3587886 A US3587886 A US 3587886A
Authority
US
United States
Prior art keywords
rollers
section
boom assembly
roller
sections
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.)
Expired - Lifetime
Application number
US799429A
Other languages
English (en)
Inventor
John W Gano
Lester H Kline
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.)
GBKS PROPERTIES Inc N/K/A GRADALL Co
Warner and Swasey Co
Gradall Co
Heller Financial Inc
Original Assignee
Warner and Swasey 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 Warner and Swasey Co filed Critical Warner and Swasey Co
Application granted granted Critical
Publication of US3587886A publication Critical patent/US3587886A/en
Assigned to GRADALL COMPANY, THE reassignment GRADALL COMPANY, THE CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: GBKS PROPERTIES INC
Assigned to BENDIX AUTOMATION COMPANY reassignment BENDIX AUTOMATION COMPANY CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: WARNER & SWASEY COMPANY THE
Assigned to WARNER & SWASEY COMPANY reassignment WARNER & SWASEY COMPANY MERGER (SEE DOCUMENT FOR DETAILS). Assignors: BX ACQUISITION CO., INC. A DE CORP. (CHANGED TO), WARNER & SWASEY COMPANY THE AN OH CORP. (MERGED INTO)
Assigned to GBKS PROPERTIES, INC. reassignment GBKS PROPERTIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BENDIX AUTOMATION COMPANY A DE CORP.
Assigned to CITICORP INDUSTRIAL CREDIT INC. reassignment CITICORP INDUSTRIAL CREDIT INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GBKS PROPERTIES, INC.
Anticipated expiration legal-status Critical
Assigned to CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO reassignment CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GRADALL COMPANY, THE
Assigned to HELLER FINANCIAL, INC., THE reassignment HELLER FINANCIAL, INC., THE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GRA DALL COMPANY, THE
Assigned to GRA DALL COMPANY, THE reassignment GRA DALL COMPANY, THE RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANK ONE, COLUMBUS, N.A.
Assigned to GRADALL COMPANY, THE reassignment GRADALL COMPANY, THE RELEASE OF COLLATERAL ASSIGNMENT Assignors: CONTINENTAL ILLINOIS NATIONAL BANK & TRUST COMPANY OF CHICAGO N/K/A BANK OF AMERICA ILLINOIS
Assigned to GBKS PROPERTIES, INC. N/K/A THE GRADALL COMPANY reassignment GBKS PROPERTIES, INC. N/K/A THE GRADALL COMPANY RELEASE OF COLLATERAL ASSIGNMENT Assignors: CITICORP INDUSTRIAL CREDIT, INC. N/K/A CITICORP NORTH AMERICA, INC.
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/283—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a single arm pivoted directly on the chassis
    • E02F3/286—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a single arm pivoted directly on the chassis telescopic or slidable

Definitions

  • An improved boom assembly includes relatively movable inner and outer sections mounted in a telescopic relationship with each other.
  • a first group of guide rollers is mounted on the outer end ofthe outer section of the boom assembly and is positioned for rolling engagement with corner portions of the inner section of the boom assembly.
  • a second group of guide rollers is mounted on the inner end of the inner section of the boom assembly and is positioned for rolling engagement with corner portions of the outer section of the boom assembly.
  • Each roller of these groups of rollers is adjustable both axially and radially relative to the section of the boom assembly which it engages. This enables the rollers to be adjusted to eliminate side loading and to provide for proper tracking or rolling of the rollers along the corner portions of the engaged sections.
  • the rollers are advantageously mounted on brackets which are constructed so as to enable the rollers to be readily mounted on the boom assembly and interchanged with each other.
  • SHEET 3 OF 3 BOOM ASSEMBLY This invention relates generally to a boom assembly and more particularly to a boom assembly having telescoping sections with guide rollers whose positions are adjustable both sidewardly and in and out relative to an engaged section of the boom assembly.
  • a known boom assembly includes a pair of telescopically mounted sections with guide rollers which engage corner portions on each of the sections to facilitate relative movement between the sections.
  • these guide rollers have been adjustable only in a radial direction relative to the engaged corner portions of the boom assembly to adjust the clearance between the rollers and the engaged corner portions. While this known boom assembly has been generally satisfactory, difficulty has been encountered due to axial or sideward misalignment of the rollers and the engaged corner portions of the boom .assembly. This axial or sideward misalignment has resulted in side loading and uneven wearing of the rollers.
  • Another object of this invention is to provide a new and improved boom assembly having telescopically mounted sections with rollers which engage corner portions of these sections and are readily adjusted both radially and axially relative to the engaged corner portions while the boom assembly is in an operative or assembled condition.
  • Another object of this invention is to provide a new and improved boom assembly having telescopically mounted sections with rollers thereon to facilitate relative movement between the sections and wherein each of the rollers is readily adjusted along at least two axes to compensate for wear of the roller and manufacturing error in the shape ofthe sections.
  • Another object of this invention is to provide a new and improved boom assembly having telescopically mounted sections with corner portions which are engaged by rollers mounted on the sections to facilitate relative movement between the sections and wherein the rollers are readily aligned with the corner portions to prevent improper tracking and side loading of the rollers.
  • Another object of this invention is to provide a new and improved boom assembly having telescopically mounted sections with rollers mounted on the sections by a plurality of brackets which are interchangeable to enable the rollers to be mounted at a plurality of locations on the boom assembly.
  • Another object of this invention is to provide a new and improved boom assembly having telescopically mounted sections with a first group of rollers mounted on a first section engaging a second section and a group of rollers mounted on the second section engaging the first section wherein at least one roller in the first group of rollers is readily interchangeable with at least one roller in the second group of rollers.
  • Another object of this invention is to provide a new and improved boom assembly having telescopically mounted sections with rollers thereon to facilitate relative movement between the sections and wherein the rollers are mounted on brackets to enable them to be mounted on the sections as units which are readily adjustable relative to the sections and easily replaced when necessary.
  • FIG. 1 is a schematic illustration of a machine having a boom assembly constructed in accordance with the present invention
  • FIG. 2 is an enlarged fragmentary view of the boom assembly of FIG. 1 in a horizontal position
  • FIG. 3 is an enlarged, partially broken away sectional view, taken generally along the line 3--3 of FIG. 2, illustrating the relationship of rollers mounted on a main or outer section of section of the boom assembly;
  • FIG. 6 is a schematic illustration, generally similar to FIG. 5, illustrating the manner in which rollers mounted on the outersection of the boom assembly are adjusted in a second direction relative to the inner section of the boom assembly;
  • FIG. 7 is a schematic illustration depicting the manner in which rollers mounted on the outer section of the boom assembly are adjusted in both the first and second directions relative to the inner section of the boom assembly;
  • FIG. 8 is a schematic illustration depicting the manner in which a roller mounted on the inner section of the boom as sembly is adjusted in a radially outward direction;
  • FIG. 9 is a schematic illustration, generally similar to FIG. 8, depicting the manner in which a roller mounted on the inner section of the boom assembly is adjusted in an axial or sideward direction;
  • FIG. 10 is a schematic illustration depicting the manner in which a roller mounted on the inner section of the boom assembly is adjusted in both the axial and radial directions;
  • FIG. 11 is a sectional view, taken generally along the line 11-11 of FIG. 3, illustrating the relationship between rollers mounted on the outer section of the boom assembly and a plurality of shims for adjusting the positions of the rollers relative to the inner section of the boom assembly.
  • the present invention relates to a boom assembly having sections mounted for telescopic movement relative to each other. This movement is facilitated by rollers which are mounted on one section for rolling engagement with another section.
  • these rollers are adjustable both axially and radially to eliminate side loading of the rollers and to provide for proper tracking or rolling of the rollers along the engaged section of the boom assembly upon relative movement between the sections.
  • the rollers are adjusted relative to the engaged section by the use of shims to selectively vary the positions of the rollers in axial and/or radial directions.
  • FIG. 1 a boom assembly 20 constructed in accordance with the present invention can be utilized in many different environments, it is illustrated in FIG. 1 in association with a known type of excavating machine 22 having a base 24.
  • the boom assembly 20 includes a main or outer section 28 which is connected to the base 24 and a telescoping or inner section 30 which is mounted for telescopic movement relative to the main section 28.
  • an earth-working implement or bucket 34 is connected to an outer end portion of the boom assembly 20.
  • the implement 34 is moved relative to the base 24 by telescopic movement of the inner section 30 relative to the outer section 28 under the influence of a known drive mechanism, such as a hydraulic cylinder 32 (FIG. 2).
  • a first or outer group 36 (FIG. 3) of rollers is mounted at an end portion 38 of the outer section 28.
  • the group 36 of rollers includes rollers 40, 42, 44, 46 and 48 which engage corner portions 50, 52 and 54 of the inner section 30 to guide and support the inner section as it is moved relative to the outer section 28.
  • a second or inner group 60 of rollers is mounted at an end portion 62 (see FIG. 4) of the inner section 30. This second group 60 of rollers also guides the inner section 30 as it is moved telescopically relative to the outer section 28 of the boom assembly 20 and includes rollers 66, 68 and 70. These rollers are rotatably mounted at corner portions of the inner section 30 and engaged corner portions 74, 76
  • rollers 40-48 track or roll along the corner portions 50-54 of the inner section while the rollers 66-70 track or roll along the corner portions 74-78 of the outer section to guide the movement of the inner section.
  • the first group 36 of rollers must roll freely along the corner portions 50-54 of the inner section while the second group 60 of rollers rolls along the corner portion 74-78 of the outer section. If the two groups 36 and 60 of rollers are improperly aligned with the associated corner portions of the inner and outer sections 30 and 28, the rollers tend to cause a twisting or flexing of the inner section as it is moved relative to the outer section. This twisting or flexing of the inner section 30 impedes the relative movement between the inner and outer sections of the boom assembly and subjects the rollers 40-48 and 66-70 to unnecessary wear inducing forces.
  • rollers are also subjected to unnecessary wear when they apply excessive pressure against the associated corner portions of the inner and outer sections 30 and 28.
  • the clearance between the rollers and the associated corner portions ofthe inner and outer sections 30 and 28 must not be so great as to allow the inner section of the boom assembly 20 to move sidewardly in an unrestrained manner relative to the outer section.
  • the rollers 40-48 and 66-70 are adjustable axially or sidewardly and radially or in and out. These adjustments can be combined to provide for simultaneous axial and radial adjustment of the rollers.
  • the capability for axial adjustment enables the rollers to be aligned with the associated corner portions of the inner and outer sections 30 and 28 of the boom assembly 20.
  • the capability for radial adjustment enables a desired amount of clearance to be provided between the rollers and the associated corner portions.
  • the rollers 40 and 42 are mounted in a set on a common bracket 84.
  • the bracket 84 has flat-locating surface portions 86, 88, 90 and 92 which cooperate with similar flat supporting surface portions 96, 98, 100 and 102, respectively, (see FIGS. 3 and Inserts or shims 106, 108, 110 and 112 are initially positioned between associated locating surfaces 86, 88, 90 and 92 and support surfaces 96, 98, 100 and 102. These shims position the rollers 40 and 42 to provide a desired amount ofclearance between the corner portion 50 of the inner section 30 and the rollers 40 and 42.
  • wear of the roller 42 or corner portion 50 may increase the clearance between the roller and corner portion.
  • wear of the roller 42 or corner portion 50 may increase the clearance between the roller and corner portion.
  • additional shims 118 and 120 between the locating surfaces 88 and 92 and the support surfaces 98 and 102 in the manner illustrated schematically in FIG. 5.
  • These shims move the roller 42 radially inwardly, that is in the direction of the arrow 124, to compensate for the wear of the roller and corner portion 50.
  • the shims 118 and 120 could be inserted between the locating surfaces 88 and 92 and the support surfaces 98 and 102 during initial fabrication ofthe boom assembly to compensate for manufacturing error in the shape ofeither the inner or outer sections 30 or 28.
  • This axial adjustment of the roller 40 maintains the roller 40 in alignment with the corner portion 50 of the inner section 30.
  • the roller 40 is advantageously provided with a generally circular outer surface which remains in engagement with the corner portion 50 even through theclearance between the roller 42 and the corner portion 50 may tend to vary.
  • roller 40 or corner portion 50 should wear in such a manner as to increase the clearance between the roller 40 and the corner portion, the roller 40 must be adjusted radially inwardly to offset the increase in clearance. This is accomplished by inserting additional shims 134 and 136 (FIG. 6) between the locating surfaces 86 and 90 and the support surfaces 96 and 100. Insertion of these shims moves the bracket 84 in the direction of the arrow 138 to compensate for the increased clearance.
  • the shims 106 and 110 are removed.
  • the bracket 84 is then moved outwardly in a direction opposite to the arrow 138 of FIG. 6. It should be noted that while the roller 40 is moved radially by varying the number of shims between the locating surfaces 86 and 90 and the support surfaces 96 and 100, the roller 42 is axially or sidewardly aligned relative to the corner portion 50 by movement of the bracket 84.
  • the roller 42 is also provided with a generally circular outer surface 140 which engages the corner portion 50 even though the clearance between the roller 42 and corner portion 50 may tend to vary.
  • both of the rollers 40 and 42 Under certain circumstances, such as when there has been a wearing of both the rollers 40 and 42, it may be desired to adjust both of the rollers sidewardly and inwardly in the general direction of the arrow 144 ofFlG. 7. This sideward and inward movement of both of the rollers is accomplished by inserting additional shims 146, I48, and 152 between all of the locating surfaces and support surfaces, that is between locating surfaces 86-92 and the associated support surfaces 96-102. The extent to which either of the rollers 40 or 42 is adjusted inwardly can be changed by varying the number of shims between two of the locating surfaces and two of the support surfaces.
  • the rollers 44 and 46 are mounted on a common bracket 153 (FIG. 3) in much the same manner as in which the rollers 40 and 42 are mounted on the bracket 84.
  • the brackets 84 and 153 are substantially identical in structure. However, an end plate has been removed from the bracket 84 in FIG. 3 to more clearly illustrate the mounting of the rollers 40 and 42.
  • the rollers 44 and 46 are adjusted relative to the corner portion 52 by inserting varying numbers of shims between locating surfaces on the support bracket 153 and support surfaces on the outer section 28. Therefore, it is believed that it will be apparent from the foregoing description that the rollers 44 and 46 can be adjusted both radially and axially relative to the corner portion 52 in much the same manner as in which the rollers 40 and 42 are adjusted relative to the corner portion 50.
  • the second or inner group of rollers 60 (FIG. 4) is adjustable relative to the corner portions 74-78 of the outer section 28 to enable these rollers to be properly aligned with the corner portions and to provide the desired amount of clearance between the rollers and the corner portions.
  • the roller 70 is adjustable in both an axial or sideward direction and in a radial direction relative to the corner portion 78. To provide for this adjustment of the roller 70, the
  • roller is mounted on a bracket 154 at a corner portion 54 of 5 the inner section 30 of the boom assembly 20.
  • shims 158 and 160 are mounted between locating surfaces 164 and 166 on the bracket 154 and support surfaces 168 and 170 on the inner section 30 ofthe boom assembly 20.
  • the support surfaces 168 and 170 are spaced-apart and slope inwardly to define a recess for receiving the bracket 154 on which the similarly sloping locating surfaces 164 and 166 are formed.
  • the roller 70 is adjusted radially outwardly in the direction of the arrow 174 in FIG. 8.
  • additional shims 178 and 180 are inserted between the locating surfaces 164 and 166 and the support surfaces 168 and 170. These shims move the roller 70 outwardly along a radial axis through a point ofengagement ofthe roller-and the corner portion 78.
  • roller 70 If the roller 70 is side loaded, it will wear excessively along one ofthe sides 184 or 186 ofan annular groove 188 (see FIG. 4) which engages the corner portion 78.
  • the roller 70 is adjustable axially or sidewardly to compensate for this wear and to properly align the roller 70 with the corner portion 78 to thereby eliminate side loading of the roller.
  • the roller is adjusted axially or sidewardly to the left as viewed in FIGS. 4 and 9. This is achieved by removing the insert 158 from between the support surface 168 and locating surface 164 and inserting an additional shim 192 between the locating surface 166 and support surface 170 in the manner illustrated sche matically in FIG. 9.
  • the foregoing sideward or axial adjustment ofthe roller 70 is accomplished without changing the position of the roller radially relative to the corner portion 78. This is because the transverse or axial distance between the outer surface of the additional shim 192 (FIG. 9) and the locating surface 168 is the same as the transverse or axial distance between the outer surfaces of the shims 158 and 160 of FIG. 4. Therefore, the roller 70 is adjusted axially in the direction ofthe arrow 194 in FIG. 9 without radial movement of the roller. Of course, the roller 70 can be moved in the opposite direction, that is toward the right as viewed in FIG. 4, by removing the shim 160 from between the locating surface 166 and the support surface 170 and inserting an additional shim between the locating surface 164 and support surface 168.
  • roller 70 will wear in such a manner as to require both radial and axial ad justment. Assuming that the roller 70 wears in such a manner as to require adjustment outwardly and toward the left, as viewed in FIG. 4, additional shims 196 and 198 (FIG. 10) are inserted between the locating surfaces 164 and 166 and the support surfaces 168 and 170 to effect a radially outward adjustment of the roller. An additional shim 200 is also inserted between the locating surface 166 and support surface 170 to effect the required sideward adjustment of the roller 70. The combined effect of these shims results in the roller 70 being moved outwardly and sidewardly in the direction of the arrow 202 of FIG. 10.
  • rollers 66 and 68 are rotatably mounted on brackets 204 and 205 which are identical in structure to the bracket 154. Therefore, it is apparent from the foregoing description that the rollers 66 and 68 can be adjusted either radially or axially by the use ofshims in much the same manner as was explained in connection with the roller 70. It should be noted that the rollers 66, 68 and 70 are individually adjustable to enable them to be properly aligned with the associated corner portions 74, 76 and 78 and to provide a desired amount of clearance between the rollers and the corner portions.
  • the first group of rollers 36 includes a single roller 48 which is mounted opposite to the rollers 40 through 46.
  • the roller 48 is mounted on a bracket 206 which is identical to the bracket 154. However, the bracket 206 is positioned with locating surfaces 208 and 210 facing outwardly toward inwardly facing support surfaces 212 and 214 on the outer section 28 of the boom assembly 20. Shims 216 and 218 are positioned between the locating surfaces 208 and 210 and the support surfaces 212 and 214 to locate the roller 48 in the initial position of FIG. 3.
  • the roller 48 can be adjusted relative to the corner portion 54 by the use of additional shims between the locating and support surfaces in much the same manner as previously explained in connection with the roller 70.
  • the shims are all clamped securely in place between the support and loading surfaces by the same screws used to mount the roller brackets on the inner and outer sections 30 and 28 of the boom assembly.
  • the shim 106 (FIG. 3) is pressed between the locating surface 86 and support surface 96 by suitable cap screws 220 and 222 FIGS. 2 and 11) which extend through holes in a support member 223 on which the support surface 96 is formed.
  • the screws 220 and 222 engage internal threads on the outwardly projecting section 224 of the bracket 84 to secure the shim 106 and the bracket 84 to the support member 223.
  • the screws 220 and 222 are loosened and a jack screw 230 tightened to move the portion 224 of the bracket 84 away from the support surface 96.
  • the rollers on the inner and outer sections 30 and 28 will tend to wear and require adjustment after the boom assembly 20 has been used for a substantial period of time.
  • the shims can be inserted or removed without dismantling the boom assembly 20.
  • the shim 106 includes a plurality of open ended slots 234. These slots 234 enable the shim 106 to be pulled upwardly, as viewed in FIGS. 3 and 11, to remove the shim from between the support surface 96 and the locating surface 86 after the cap screws 220 and 222 have been loosened and the jack screw 230 tightened.
  • shims having similar slots can be readily inserted between the locating surface 86 and support surface 96.
  • the jack screw 230 is released and the cap screws 220 and 222 are tightened to clamp the shims between the loading surface 86 and support surface 96.
  • the shim 112 between the locating surface 92 and support surface 102, is similar to the shim 106 and is secured and released in the same manner. Since the shim 112 is ofthe same configuration as the shim 106, it is apparent that this shim can also be removed from between the locating surface 92 and support surface 102 while the boom assembly 20 is in the assembled or operative condition.
  • the other shims associated with the locating surfaces 86 and 92 and the support surfaces 96 and 102 that is the shims 120, 134, 146 and 152 (see FIGS. 5, 6 and 7) are ofthe same configuration illustrated in FIG. 11 for the shim 106.
  • the shim 110 (see FIGS. 3 and 11) is clamped between the locating surface and support surface 100 in much the same manner as in which the shim 106 is clamped between the locating surface 96 and support surface 96. Accordingly, a pair of capscrews 240 and 242 (FIG. 2) extend through suitable holes in a support section 244 (FIG. 3) into threaded engagement with the bracket 84. By tightening the capscrews 240 and 242, the shim 110 is securely retained in place. When the shim 110 is to be removed or additional shims inserted between the locating surface 90 and support surface 100, the capscrews 240 and 242 are loosened and a jack screw 248 (FIG. 2) is tightened to press the locating surface 90 away from the support surface 100 to release the shim 110 and enable additional shims to be inserted between the locating and support surfaces.
  • the shim 110 has an open ended slot 252 (FIG. 11) which enables the shim 110 to be removed from between the locating and support surfaces after the capscrews 240 and 242 have been loosened and the jackscrew 248 tightened.
  • an open ended slot 252 FIG. 11
  • the shims associated with the rollers 44 and 46 are identical in shape to the shims 106 and 110 (see FIG. 11) and are located in corresponding positions relative to the rollers 44 and 46 to enable them to be inserted and removed without disassembling the boom assembly 20.
  • the shims 158 and 160 associated with the bracket 154 are substantially identical in shape to the shim 106 (see FIGS. 4 and 11).
  • the shim 160 is clamped between the locating surface 166 and support surface 170 by a pair of capscrews 260 and 262 (FIG. 2) which are threaded into the bracket 154.
  • the shim 160 can be removed from between the locating surface 166 and support surface 170 and additional shims inserted by loosening the cam screws 260 and 262 and tightening a jackscrew 266 to move the bracket I54 away from the support surface 170.
  • the outer section 28 of the boom assembly 20 is advantageously provided with a plurality of openings or holes 270 (FIG.
  • the openings 270 are sufficiently large to enable the shim 158 to be withdrawn or additional shims inserted without dismantling the boom assembly 20.
  • the shims as sociated with the rollers 66 and 68 are similar to the shim 160 and can be readily inserted or removed through the openings 270 in the outer section 28.
  • brackets are advantageously constructed in such a manner as to enable lightly loaded rollers to be interchanged with heavily loaded rollers to thereby distribute the wear more evenly between the rollers.
  • the rollers 42 and 44 (see FIG. 3) will be subjected to a relatively heavy loading during operation of the boom assembly 20 and the rollers 40 and 46 will be subjected to a relatively light loading.
  • the bracket 84 for the rollers 40 and 42 is substantially identical in structure with the bracket 153 for the rollers 44 and 46 and is symmetrical about an axis extending between the rollers 40 and 42. This symmetry of bracket structure enables the rollers 40 and 42 to be interchanged with the rollers 44 and 46 by merely interchanging the brackets 84 and 153.
  • the roller 42 is located where the roller 46 is shown in FIG. 3 and is subjected to a relatively light load.
  • the roller 40 is located where the roller 44 is shown in FIG. 3 and is subjected to a relatively heavy load.
  • roller 44 being positioned where the lightly loaded roller 40 is shown in FIG. 3 with the roller 46 in position of the roller 42.
  • the two sets of rollers at the corner portions 74 and 76 of the outer section 28 can be in terchanged to more evenly distribute wear between the rol lers.
  • the single rollers 48, 66. 68 :md 70 (sec FIGS. 3 and 4) are mounted on brackets which are identical in structure, these rollers can all be interchanged. 'lhus, the roller 68 ofthe inner group 60 of rollers can be interchanged for the roller 48 of the outer group 36 of rollers or cart be interchanged with any other roller of the inner group of rollers.
  • the bracket 154 is symmetrical about a central axis 280 to enable the roller to be rotated l80 from the position shown in FIG. 4 to reverse the positions ofthe side portions 184 and 186 ofthe annular groove 188.
  • the roller 70 can be rotated about the central axis 280 to more evenly distribute the wear on the roller.
  • the rollers 48, 66 and 68 can be similarly rotated.
  • the boom assembly 20 includes telescopically mounted sections 28 and 30 with a first group of rollers 36 mounted on the outer section 28 for engagement with the corner portions of the inner section 30.
  • a second group of rollers is mounted on the inner section 30 and engages the outer section 28 to further facilitate relative movement between the two sections.
  • the rollers are adjustable both radially and axially to compensate for manufacturing error in the shape of sections and for wear ofthe rollers and corner portions of the sections.
  • the rollers are mounted on brackets which are secured to the sections of the boom assembly.
  • the positions of the brackets can be changed by using shims to compensate for manufacturing error in the shape ofthe sections and for wear of the rollers or the sections.
  • the shims enable the rollers to be aligned with the associated corner portions which they engage to eliminate improper tracking and side loading of the rollers.
  • the shims have open ended slots which enable them to be inserted and removed from between the locating and support surfaces with the boom assembly in its operative or assembled condition.
  • a relatively small number of shims have been shown herein in association with the brackets and rollers for the purposes of clarity of illustration, it is con templated that a large number of relatively thin shims will be associated with each of the brackets and rollers when they are in their initial positions illustrated in FIGS. 3 and 4.
  • the shims have all been shown as having substantially the same thickness it should be understood that the shims have different thickness and could, ifdesired, be used.
  • the rollers are advantageously mounted on brackets having the same construction to enable the rollers to be interchanged to thereby distribute wear more evenly between the rollers.
  • the single rollers 48, 66, 68 and are all mounted on identical brackets so that any of these rollers can be interchanged with any other single roller.
  • the rollers 40 and 42 are mounted on a set on a common bracket 84 and interchangeable with the rollers 44 and 46 on the common bracket 153.
  • the mounting of the rollers on brackets enables them to be quickly and easily bolted in place during fabrication of the boom assembly 20 and subsequently replaced if, after a period ofuse, it becomes necessary to do so.
  • a boom assembly comprising a plurality of sections mounted for telescopic movement relative to each other, a plurality of rollers rotatably mounted on one of said sections and having generally annular outer surfaces for engaging surfaces of another of said sections to facilitate relative movement between said sections, and means for selectively adjusting the positions of said generally annular outer surfaces of said rollers in axial directions relative to said surfaces of said other section and for selectively adjusting the positions of said generally annular outer surfaces of said rollers in radial directions relative to said surfaces of said other section to thereby enable said rollers to be adjusted both sidewardly and in and out relative to said other section to provide for a desired rolling relationship of said rollers with said surfaces of said other section during relative movement between said one section and said other section.
  • a boom assembly as set forth in claim I further including at plurality of brackets connected to said one section for mounting said rollers on said one section in a plurality of sets of rollers.
  • said means for adjusting the positions of said antitrlar surfaces of said rollers including means for selectively adjusting the positions of each one of said brackets along a first axis extending generally perpendicular to an axis of rotation of one roller of the set of rollers mounted on said one bracket and for selectively adjusting the position of said one bracket along a second axis extending generally perpendicular to an axis of rotation of another roller of the set of rollers mounted on said one bracket.
  • a boom assembly as set forth in claim 1 further including a plurality of brackets for mounting said rollers on said one section, said means for adjusting the positions of said annular surfaces of said rollers including means for selectively adjusting the position of each one of said brackets along first and second axes extending transversely to each other and to an axis of rotation of a roller mounted on said one bracket.
  • a boom assembly as set forth in claim 1 further including a plurality of brackets for mounting said rollers on said one section, each of said brackets being mountable on said one section in a plurality of positions to enable each of said rollers to be mounted in a plurality of positions relative to said other section.
  • each one of said brackets is rotatable between first and second positions about an axis transverse to the axis of rotation of a roller mounted on said one bracket, said roller mounted on said one bracket being located in a first relationship with said other section when said one bracket is in said first position and in a second relationship with said other section when said one bracket is in said second position.
  • a boom assembly as set forth in claim 1 further including a plurality of rollers rotatably mounted on said other section and having generally annular outer surfaces for engaging surfaces of said one section to further facilitate relative movement between said sections, and means for selectively adjusting the positions of said generally annular outer surfaces of said rollers mounted on said other section in axial directions relative to said surfaces of said one section and for selectively adjusting the positions of said generally annular outer surface of said rollers mounted on said other section in radial directions relative to said surfaces of said one section to thereby enable said rollers mounted on said other section to be adjusted both sidewardly and in and out relative to said surfaces of said one section to provide for a desired rolling relationship of said rollers mounted on said other section with said surfaces of said one section during relative movement between said one section and said other section.
  • a boom assembly as set forth in claim 7 further including a first group of brackets connected to said one section for rotatably mounting rollers on said one section and a second group of brackets connected to said other section for rotatably mounting rollers on said other section, at least one of said brackets of said first group of brackets being interchangeable with at least one of said brackets of said second group of brackets to enable a roller mounted on said one section to be readily mounted on said other section and to enable a roller mounted on said other section to be readily mounted on said one section.
  • a boom assembly comprising a plurality of sections mounted for telescopic movement relative to each other, one of said sections having a plurality of longitudinally extending corner portions, a plurality of rollers each of which is mounted on another of said sections and engages a corner portion of said one section to facilitate relative movement between said sections, and means for adjusting the position of each one of said rollers along a first axis extending through an associated corner portion of said one section and a point of engagement between said one roller and the associated corner portion and along a second axis extending through said one roller transver sely to said first axis to thereby enable each one of said rollers to be positioned in a desired relationship with the associated corner portion of said one section.
  • a boom assembly as set forth in claim 9 further including a plurality of brackets for mounting said rollers on said other section, said means for adjusting the positions of each one of said rollers including shim means for use in varying the positions of said brackets and rollers relative to said one section.
  • a boom assembly as set forth in claim 10 wherein a plurality of said rollers are mounted on one of said brackets which has a plurality of locating surfaces each of which extends transversely to an axis of rotation of one of the rollers mounted on said one bracket, said other section including a plurality of support surfaces whichare complimental to locating surfaces on said one bracket, and said shim means includes a plurality of shim elements each of which is positioned between a locating surface of said bracket and a support surface of said other section to position said plurality of rollers mounted on said one bracket relative to said one section 13.
  • a boom assembly as set forth in claim 9 further including a plurality of brackets each of which mounts a plurality of said rollers on said other section, each of said brackets being interchangeable with another of said brackets to enable said rollers to be readily mounted at a plurality of locations on said other section to thereby enable the rollers at one location on said other section to be substituted for rollers at another location on said other section to compensate for any tendency of one of the rollers to wear at a relatively fast rate compared to the other rollers due to an uneven distribution of operating loads between the rollers.
  • a boom assembly comprising a plurality of sections mounted for telescopic movement relative to each other,'each of said sections having a plurality of longitudinally extending corner portions, a first group. of rollers each of which is mounted at a corner portion of one of said sections and has a generally annular outer surface for engaging a corner portion of another of said sections to facilitate relative movement between said sections, a second group of rollers each of which is mounted at a corner portion of said other section and has a generally annular outer surface for engaging a corner portion of said one section to further facilitate relative movement between said sections, first means for adjusting the positions of each roller of said first group of rollers in a direction along its axis of rotation to thereby enable the annular outer surfaces of said first group of rollers to be moved into alignment with associated corner portions of said other section and for adjusting the positions of each roller of said first group of rollers in a direction along an axis extending through the associated corner portions of said other section and a point of engagement between the annular outer surface of the roller and the associated corner
  • a boom assembly comprising a plurality of sections mounted for telescopic movement relative to each other, each of said boom sections having longitudinally extending corner portions, a bracket mounted at a corner portion of one of said boom sections, a first roller rotatably mounted on said bracket for rotation about a first axis, a second roller rotatably mounted on said bracket for rotation about a second axis which is perpendicular to said first axis, said first and second rollers having generally cylindrical outer surfaces disposed in rolling engagement with one corner portion of another of said boom sections, first shim means for selectively adjusting the position of said first roller in a radial direction relative to said one corner portion of said other boom section and for simultaneously therewith adjusting the position of the generally cylindrical outer surface of said second roller in an axial direction relative to said one corner portion of said other boom section, and second shim means for selectively adjusting the position of said second roller in a radial direction relative to said one corner portion of said other boom section and for simultaneously therewith adjusting the position of the generally cylindrical outer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Jib Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
US799429A 1969-02-14 1969-02-14 Boom assembly Expired - Lifetime US3587886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79942969A 1969-02-14 1969-02-14

Publications (1)

Publication Number Publication Date
US3587886A true US3587886A (en) 1971-06-28

Family

ID=25175892

Family Applications (1)

Application Number Title Priority Date Filing Date
US799429A Expired - Lifetime US3587886A (en) 1969-02-14 1969-02-14 Boom assembly

Country Status (5)

Country Link
US (1) US3587886A (ja)
JP (1) JPS4816268B1 (ja)
DE (1) DE2006723C3 (ja)
FR (1) FR2033338B1 (ja)
GB (1) GB1256826A (ja)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748807A (en) * 1971-10-12 1973-07-31 Kidde & Co Walter Adjustable and replaceable lateral guides for telescopic crane boom
US3776500A (en) * 1971-07-16 1973-12-04 Picker Corp X-ray apparatus having a telescopic columnar support
US3835980A (en) * 1973-03-20 1974-09-17 Mc Donald J Conveyor with extendible booms
US3874136A (en) * 1972-06-12 1975-04-01 Scadella Anstalt Telescopic mast structure
US3877407A (en) * 1972-08-15 1975-04-15 North American Dev Company Hydraulic ice breaker
US3978957A (en) * 1973-11-13 1976-09-07 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Hollow guiding mast for a charging device of a core reactor
US4003168A (en) * 1975-06-27 1977-01-18 Walter Kidde & Company, Inc. Crane boom of trapezoidal boom sections having reinforcing rings
US4130205A (en) * 1975-12-09 1978-12-19 Fritz Studer Ag. Loading arm
US4318451A (en) * 1980-05-27 1982-03-09 The Warner & Swasey Company Dual function remote steering control
US4705450A (en) * 1985-12-11 1987-11-10 The Gradall Company Single engine excavator with remote control
US4728249A (en) * 1985-12-11 1988-03-01 The Gradall Company Telescoping boom assembly with longitudinally displaceable base boom section
US4757968A (en) * 1986-02-10 1988-07-19 Orion-Yhtyma Oy Apparatus for implementation of vertical movement of a chair, especially of a patient chair
US5515654A (en) * 1994-11-02 1996-05-14 Anderson; Edward E. Telescopic boom apparatus
US6308441B1 (en) 1998-12-15 2001-10-30 The Gradall Company Excavator
US20070172032A1 (en) * 1999-11-30 2007-07-26 Shook Mobile Technology, L.P. Boom with mast assembly
US20120090261A1 (en) * 2010-10-19 2012-04-19 Ed Anderson Boom assembly
CN103174715A (zh) * 2011-12-23 2013-06-26 苏州海伦哲专用车辆有限公司 一种伸缩臂滑块装置
US8678210B1 (en) * 2010-11-17 2014-03-25 Link-Belt Construction Equipment Co., L.P., Lllp Telescoping boom assembly with base section having primary shell and secondary formed shell
US9073734B1 (en) * 2011-09-06 2015-07-07 Corn Crane LLC Hoisting apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4899548A (ja) * 1972-04-01 1973-12-17
JPS5694028A (en) * 1979-12-27 1981-07-30 Ntn Toyo Bearing Co Ltd Seal for roll bearing
DD215518A5 (de) * 1982-10-27 1984-11-14 Fuchs Fa Johannes Ausleger fuer hebezeuge, insbesondere hebebuehnen, bagger oder dergleichen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684159A (en) * 1950-07-12 1954-07-20 Warner Swasey Co Telescoping boom actuating mechanism
US3224608A (en) * 1963-01-15 1965-12-21 Universal Marion Corp Earth working and materials handling machine
US3285431A (en) * 1965-04-30 1966-11-15 Universal Marion Corp Guide roll assembly for telescopic boom

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776500A (en) * 1971-07-16 1973-12-04 Picker Corp X-ray apparatus having a telescopic columnar support
US3748807A (en) * 1971-10-12 1973-07-31 Kidde & Co Walter Adjustable and replaceable lateral guides for telescopic crane boom
US3874136A (en) * 1972-06-12 1975-04-01 Scadella Anstalt Telescopic mast structure
US3877407A (en) * 1972-08-15 1975-04-15 North American Dev Company Hydraulic ice breaker
US3835980A (en) * 1973-03-20 1974-09-17 Mc Donald J Conveyor with extendible booms
US3978957A (en) * 1973-11-13 1976-09-07 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Hollow guiding mast for a charging device of a core reactor
US4003168A (en) * 1975-06-27 1977-01-18 Walter Kidde & Company, Inc. Crane boom of trapezoidal boom sections having reinforcing rings
US4130205A (en) * 1975-12-09 1978-12-19 Fritz Studer Ag. Loading arm
US4318451A (en) * 1980-05-27 1982-03-09 The Warner & Swasey Company Dual function remote steering control
US4728249A (en) * 1985-12-11 1988-03-01 The Gradall Company Telescoping boom assembly with longitudinally displaceable base boom section
US4705450A (en) * 1985-12-11 1987-11-10 The Gradall Company Single engine excavator with remote control
US4757968A (en) * 1986-02-10 1988-07-19 Orion-Yhtyma Oy Apparatus for implementation of vertical movement of a chair, especially of a patient chair
US5515654A (en) * 1994-11-02 1996-05-14 Anderson; Edward E. Telescopic boom apparatus
US6308441B1 (en) 1998-12-15 2001-10-30 The Gradall Company Excavator
US20070172032A1 (en) * 1999-11-30 2007-07-26 Shook Mobile Technology, L.P. Boom with mast assembly
US20120090261A1 (en) * 2010-10-19 2012-04-19 Ed Anderson Boom assembly
US8245456B2 (en) * 2010-10-19 2012-08-21 Ed Anderson Boom assembly
US20120210655A1 (en) * 2010-10-19 2012-08-23 Ed Anderson Boom assembly
US8347563B2 (en) * 2010-10-19 2013-01-08 Ed Anderson Boom assembly
US8678210B1 (en) * 2010-11-17 2014-03-25 Link-Belt Construction Equipment Co., L.P., Lllp Telescoping boom assembly with base section having primary shell and secondary formed shell
US9073734B1 (en) * 2011-09-06 2015-07-07 Corn Crane LLC Hoisting apparatus
CN103174715A (zh) * 2011-12-23 2013-06-26 苏州海伦哲专用车辆有限公司 一种伸缩臂滑块装置

Also Published As

Publication number Publication date
FR2033338B1 (ja) 1973-10-19
FR2033338A1 (ja) 1970-12-04
JPS4816268B1 (ja) 1973-05-21
DE2006723A1 (de) 1970-09-03
DE2006723B2 (de) 1979-08-23
DE2006723C3 (de) 1980-05-22
GB1256826A (ja) 1971-12-15

Similar Documents

Publication Publication Date Title
US3587886A (en) Boom assembly
US4397237A (en) Roller train structure for use with printing machine
DE4126545C2 (de) Dreiringwälzlager für die Zapfen der Zylinder von Druckmaschinen
WO1997045667A1 (de) Drehdurchführung für hohe drücke und hohe relativgeschwindigkeiten
US2621590A (en) Plate clamping mechanism for printing cylinders
JPH024698B2 (ja)
CN1012566B (zh) 用于单面印刷机或双面印刷机的送纸滚筒
DE2523765B2 (de) Wellenradialgleitlager
EP0094781B1 (en) Improvements relating to carding engines
HU201695B (en) Apparatus and method for adjusting the slot width of supporting roller-pairs in so called double belt systems
GB2031041A (en) Compactor shoe construction
DE29701002U1 (de) Preßwalze zum Behandeln bahnförmigen Gutes und Schuhpresse mit einer solchen Preßwalze
JPH07284821A (ja) 多数本のロールの支持構造物
US3924911A (en) Sealing device
EP0669180B1 (de) Werkzeugbestückte Werkzeugmaschine zum Drehräumen, Dreh-Drehräumen oder Drehen
RU2237532C2 (ru) Устройство для регулируемого воздействия на силы трения между направляющими и упорными поверхностями опорных подушек валков, установленных в проемах стоек прокатных клетей
JP3056486B1 (ja) 印刷機用インキレ―ル
DE2131739A1 (de) Vorrichtung zum Wechseln der Walzenelemente an Blechrichtmaschinen
CH625979A5 (en) Adjusting device for a sheet levelling machine for the adjustment of the levelling gap
US4116261A (en) Continuous casting plant strand guiding means
EP0083691A1 (de) Kraftbetätigtes Spannfutter für Drehmaschinen
EP0734507A1 (en) Fluid cylinder retraction locking device
EP4343060A2 (en) Stud for a doctor blade holder in a fiber web machine and doctor blade holder assembly for a fiber web machine
DE2709448A1 (de) Spindeleinheit mit automatischer werkzeugabhebevorrichtung
DE9210188U1 (de) Vorrichtung zum Bearbeiten der Mantelfläche eines Zylinders innerhalb einer Papiermaschine

Legal Events

Date Code Title Description
AS Assignment

Owner name: WARNER & SWASEY COMPANY, STATELESS

Free format text: MERGER;ASSIGNORS:WARNER & SWASEY COMPANY THE AN OH CORP. (MERGED INTO);BX ACQUISITION CO., INC. A DE CORP. (CHANGED TO);REEL/FRAME:004204/0177

Effective date: 19831101

Owner name: GBKS PROPERTIES, INC. 406 MILL AVENUE SW, NEW PHIL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BENDIX AUTOMATION COMPANY A DE CORP.;REEL/FRAME:004211/0434

Effective date: 19831028

Owner name: WARNER & SWASEY COMPANY THE, A DE CORP

Free format text: MERGER;ASSIGNORS:WARNER & SWASEY COMPANY THE AN OH CORP. (MERGED INTO);BX ACQUISITION CO., INC. A DE CORP. (CHANGED TO);REEL/FRAME:004204/0177

Effective date: 19831101

Owner name: BENDIX AUTOMATION COMPANY, STATELESS

Free format text: CHANGE OF NAME;ASSIGNOR:WARNER & SWASEY COMPANY THE;REEL/FRAME:004204/0181

Effective date: 19831027

Owner name: GRADALL COMPANY, THE

Free format text: CHANGE OF NAME;ASSIGNOR:GBKS PROPERTIES INC;REEL/FRAME:004244/0453

Effective date: 19831205

Owner name: CITICORP INDUSTRIAL CRIDEDIT INC BOND COURT BLDG S

Free format text: SECURITY INTEREST;ASSIGNOR:GBKS PROPERTIES INC;REEL/FRAME:004208/0945

Effective date: 19831028

Owner name: BENDIX AUTOMATION COMPANY

Free format text: CHANGE OF NAME;ASSIGNOR:WARNER & SWASEY COMPANY THE;REEL/FRAME:004204/0181

Effective date: 19831027

AS Assignment

Owner name: CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPA

Free format text: SECURITY INTEREST;ASSIGNOR:GRADALL COMPANY, THE;REEL/FRAME:005003/0703

Effective date: 19880719

AS Assignment

Owner name: GRA DALL COMPANY, THE, OHIO

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANK ONE, COLUMBUS, N.A.;REEL/FRAME:007690/0618

Effective date: 19951012

Owner name: HELLER FINANCIAL, INC., THE, ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GRA DALL COMPANY, THE;REEL/FRAME:007677/0867

Effective date: 19951013

AS Assignment

Owner name: GBKS PROPERTIES, INC. N/K/A THE GRADALL COMPANY, O

Free format text: RELEASE OF COLLATERAL ASSIGNMENT;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC. N/K/A CITICORP NORTH AMERICA, INC.;REEL/FRAME:007854/0920

Effective date: 19951219

Owner name: GRADALL COMPANY, THE, OHIO

Free format text: RELEASE OF COLLATERAL ASSIGNMENT;ASSIGNOR:CONTINENTAL ILLINOIS NATIONAL BANK & TRUST COMPANY OF CHICAGO N/K/A BANK OF AMERICA ILLINOIS;REEL/FRAME:007757/0847

Effective date: 19951218