US20090250423A1 - Pin changing device and method - Google Patents
Pin changing device and method Download PDFInfo
- Publication number
- US20090250423A1 US20090250423A1 US12/485,244 US48524409A US2009250423A1 US 20090250423 A1 US20090250423 A1 US 20090250423A1 US 48524409 A US48524409 A US 48524409A US 2009250423 A1 US2009250423 A1 US 2009250423A1
- Authority
- US
- United States
- Prior art keywords
- support
- pin
- sheave
- upper block
- frame
- 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
Links
- 238000000034 method Methods 0.000 title claims description 10
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
- B66D3/26—Other details, e.g. housings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49721—Repairing with disassembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49721—Repairing with disassembling
- Y10T29/4973—Replacing of defective part
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49732—Repairing by attaching repair preform, e.g., remaking, restoring, or patching
- Y10T29/49734—Repairing by attaching repair preform, e.g., remaking, restoring, or patching and removing damaged material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49815—Disassembling
- Y10T29/49822—Disassembling by applying force
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49998—Work holding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
- Y10T29/53857—Central screw, work-engagers around screw
- Y10T29/53878—Tubular or tube segment forms work-engager
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53978—Means to assemble or disassemble including means to relatively position plural work parts
Definitions
- the present invention relates to overhead cranes and particularly to upper blocks of overhead cranes. More particularly, the present invention relates to the main support pin in an upper block of an overhead crane.
- Conventional overhead cranes include a wire rope that is reeved between an upper block and a lower block.
- the upper block typically includes multiple sheaves supported on a main pain and around which the wire rope is reeved.
- the wire rope typically must be unreeved from the upper block sheaves and the lower block sheaves.
- a device that permits a main pin of an upper block to be changed without unreeving and re-reeving the upper block would be welcomed by users of overhead cranes.
- the invention provides a pin removal assembly for use with an upper block of a crane.
- the upper block includes a frame, a plurality of sheaves, and a removable sheave pin that defines an axis of rotation for the sheaves and supports the sheaves with the frame.
- the pin removal assembly comprises a sheave support mountable to the frame of the upper block and a pin support mountable to the upper block.
- the pin support is configured to support the sheave pin when the sheave pin is removed from the upper block.
- the invention provides a pin removal assembly for use with an upper block of a crane.
- the upper block includes a frame, a plurality of sheaves, and a removable sheave pin that defines an axis of rotation for the sheaves and supports the sheaves with the frame.
- the pin removal assembly comprises a first support bracket attached to a sidewall of to the upper block frame and a sheave support mountable to the first support bracket.
- the sheave support includes a base portion configured to support the sheaves and a support arm portion releasable mountable to the first support bracket.
- the invention provides an upper block assembly for an overhead crane.
- the upper block assembly includes an upper block and a pin removal assembly releasable mounted to the upper block.
- the upper block includes a frame with a first sidewall and a second sidewall, a plurality of sheaves arranged within the frame, and a sheave pin that supports the sheaves within the frame.
- Each sidewall and each sheave includes a hole therethrough, and the holes defining an axis of rotation and receiving the sheave pin.
- the invention provides a method of supporting an upper block of an overhead crane during replacement of the sheave pin.
- the upper block includes a frame, a plurality of sheaves and a removable sheave pin that defines an axis of rotation from the sheaves and supports the sheaves within the frame.
- the method includes mounting first and second support brackets to opposite sidewalls of the upper block frame, mounting a sheave support including a base portion to at least one of the support brackets, and positioning the base portion of the sheave support to support each sheave.
- the method further includes mounting a pin support to the other support bracket located adjacent the sheave pin and sliding the sheave pin from the upper block wherein the pin support supports the sheave pin.
- FIG. 1 is a perspective view of a crane including a trolley having an upper block according tot eh present invention.
- FIG. 2 illustrates a pin removal assembly according tot eh present invention that is connected to an upper block.
- FIG. 3 is a cross-sectional view of the pin removal assembly of FIG. 1 taken along line 3 - 3 of FIG. 1 , and showing a sheave support of the pin removal assembly engaged with a sheave of the upper block.
- FIG. 4 is an end view of the pin removal assembly of FIG. 1 showing a main pin of the upper block supported by the pin removal assembly before it is inserted into and through the sheaves of the upper block.
- a crane 10 includes a trolley 16 that moves along girder rails 20 that sit atop a first girder 12 and a second girder 14 .
- the first girder 12 and the second girder 14 translate along a main support beam 18 on one end and an additional support beam (not shown) parallel to beam 18 at an opposite end of the girders.
- the trolley 16 includes a drum 26 around which is wrapped two wire ropes 54 , 56 .
- a lower block 30 is lifted, as will be readily apparent to those of skill in the art.
- the lower block 30 includes a hook that can be used for lifting.
- the lower block 30 could include other configurations for lifting, as will also be readily to those of skill in the art
- the translation of the trolley 16 along the first and second girders 12 , 14 and the translation of the first and second girders 12 , 14 along the main support beams 18 allows the crane 10 to position the lower block 309 in virtually any location in a space in which the crane 10 is installed.
- the main support beam 18 is shown as a straight beam.
- the main support beam 18 may alternatively be curved to match the inside wall contours of a round building.
- a polar crane similar to crane 10 shown in FIG. 1 , may be used in a nuclear containment building that is built in a round configuration, in which case the main support beam 18 will be shaped in a circle instead of a straight line.
- the wire ropes 54 , 56 extend from the drum 26 to the lower block 30 , which contains a plurality of sheaves (not shown) around which the wire ropes 54 , 56 pass. From the lower block 30 , the wire ropes 54 , 56 extend to an upper block 28 that also contains a plurality of sheaves (not shown). After reeving back and between the lower block 30 and upper block 28 , as will be readily understood by those of ordinary skill in the art, the wire ropes 54 , 56 end within the upper block 28 .
- the upper block 28 includes an upper block frame 60 , a plurality of sheaves 64 arranged within the frame 60 , and a sheave pin 68 that supports the sheaves 64 within the frame 60 .
- the frame 60 illustrated in FIG. 2 includes a plurality of vertical walls 72 , with the two outermost support walls defining first and second sidewalls 72 A and 72 B.
- a horizontal top wall 76 extends across top surfaces of each wall 72 between the first and second sidewalls 72 A, 72 B.
- Each wall includes a hole (not shown) therethrough for receiving the sheave pin 68 .
- other configurations are used, for example, fewer or more vertical walls are included and top or bottom walls are included.
- the sheaves 64 are arranged and aligned in parallel within the upper block frame 60 .
- Each sheave includes a hole 80 (shown in FIG. 3 ) therethrough for receiving the sheave pin 68 .
- the sheave pin 68 defines an axis of rotation 84 for the sheaves 64 within the frame 60 . Although seven sheaves 64 are shown in the embodiment illustrated in FIG. 2 , it will be readily apparent to those of skill in the art that fewer or more sheaves may be used in the upper block 28 .
- the upper block assembly 28 illustrated in FIG. 2 includes a pin removal assembly 90 releasably mounted to the upper block 28 for supporting the sheaves 64 and the upper block 28 when the sheave pin 68 is removed from the upper block 28 .
- the pin removal assembly 90 allows the sheave pin 68 to be removed and/or replaced from the upper block 28 without unreeving the wire ropes 54 , 56 from the upper block sheaves 64 and sheaves (not shown) of the lower block 30 . Further, the pin removal assembly 90 allows the sheave pin 68 to be removed and reinstalled without removing the upper block sheaves 64 .
- the pin removal assembly 90 supports the sheaves 64 within the upper block frame 60 such that the sheave pin is removable from the upper block 28 without unreeving and re-reeving the wire ropes 54 , 56 or removing the upper block sheaves 64 .
- the pin removal assembly 90 includes a first support bracket 94 , a second support bracket 98 , a sheave support 102 for supporting the sheaves 64 and a pin support 106 for supporting the sheave pin 68 when the sheave pin 68 is removed from the upper block 28 .
- the first and second support brackets 94 , 98 are attached to the first and second sidewalls 72 A, 72 B, respectively, of the upper block frame 60 .
- the support brackets 94 , 98 are either permanently attached ore removably attached to the sidewalls 72 A, 72 B.
- the sheave support 102 is releasably mounted to the first support bracket 94 and pin support 106 is releasably mounted to the second support bracket 98 .
- the sheave support 102 and the pin support 106 are releasably mounted to the upper block frame 60 directly.
- the upper block frame 60 includes keeper plates to which the sheave support 102 and the pin support 106 attach.
- the sheave support 102 includes a vertical support arm 110 and a base portion 114 .
- the support arm 110 of the sheave support 102 is mounted at one end to the first support bracket 94 .
- the base portion 114 or beam, is attached to the other end of the support arm 110 and extends substantially perpendicular to the support arm 110 .
- a plurality of wedges 118 are attached to the base position 114 of the sheave support 102 .
- each wedge 118 is configured to support one sheave 64 when the pin removal assembly 90 is in use.
- Each wedge 118 is vertically adjusted with a screw (not shown) to position the wedge 118 to support a sheave 64 .
- each wedge, or support is configured to support more than one sheave. Further, it will be readily apparent to those skilled in the art that the wedge may be comprised of one or two pieces.
- the pin support 106 includes a vertical first support portion 122 and a horizontal second support portion 126 .
- the first support portion 122 of the pin support 106 is mounted at one end to the second support bracket 98 of the upper block frame 60 .
- the other end of the first support portion 122 is attached to the base portion 114 of the sheave support 102 .
- the sheave support 102 and the pin support 106 are not attached.
- the second support portion 126 is attached to the support portion 122 of the pin support 106 .
- the second support portion 126 extends outward from the upper block frame 60 such that the second support portion 126 is substantially aligned in parallel with the rotation axis 84 defined by the sheave pin 68 .
- the second support portion 126 is V-shaped and configured to support a sheave pin when the sheave pin 68 is removed from the upper block 28 or a new pin is installed into the upper block 28 . It will be readily apparent to those skilled in the art that the second support portion may have any configuration or shape suitable for supporting a sheave pin removed from the upper block.
- a cross bar 130 is attached to the second support portion 126 of the pin support 106 .
- the cross bar 130 supports a pulling/pushing mechanism (not shown) for removing the sheave pin 68 from the upper block 28 .
- a pulling/pushing mechanism is a hydraulic cylinder.
- the mechanism is positioned to pull the sheave pin 68 in order to remove the sheave pin from the upper block 28 , and to push the sheave pin 68 in order to install the sheave pin 68 into the upper block 28 .
- the mechanism is positioned to push the sheave pin 68 in order to remove the sheave pin 68 from the upper block, and to pull the sheave pin 68 in order to install the sheave pin 68 into the upper block 28 .
- a brace member 134 extends between the second support portion 126 and the second support bracket 98 . The brace member 134 prevents the sheave pin 68 from falling from the pin support 106 when the pin 68 is removed from the upper block 28 .
- the pin removal assembly 90 is not permanently attached to the upper block 28 , but is only attached during removal and replacement of the sheave pin 68 relative to the upper block 28 .
- the first and second support brackets 94 , 98 are attached to the opposite sidewalls 72 A, 72 B of the upper block frame 60 .
- the sheave support 102 is mounted to the first support bracket 94 .
- the wedges 118 are positioned and adjusted individually, or as a unit, such that each wedge 118 wedge supports one of the sheaves 64 .
- the pin support 106 is mounted to the second support bracket 98 .
- the sheave pin 68 is removed from the upper block 28 by a pulling/pushing mechanism and the pin support 106 supports the sheave pin 68 when it is removed from the upper block 28 .
- the sheave pin 68 is removed from the pin support 106 and a new sheave pin is placed in the pin support 106 .
- the new sheave pin is positioned within the upper block 28 to support the sheaves 64 within the upper block 28 by sliding the pin through the holes of the upper block frame 60 and holes 80 of the sheaves 64 .
- the sheave support 102 supports the sheaves 64 within the upper block frame 60 such that the sheave pin 68 is removable without unreeving the wire ropes 54 , 56 from the sheaves 64 or removing the upper block sheaves 64 .
- first and second support brackets 94 , 98 are permanently attached to the upper block frame 60 .
- the vertical support arm 110 of the sheave support 102 and the first support portion 12 of the pin support 106 are separately attached to the support brackets 94 , 98 relative to the sheave support 102 and pin support 106 , respectively.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
Description
- This is a divisional application of U.S. patent application Ser. No. 11/032,529 filed on Jan. 10, 2005, the disclosure of which is expressly incorporated herein in its entirety by reference.
- The present invention relates to overhead cranes and particularly to upper blocks of overhead cranes. More particularly, the present invention relates to the main support pin in an upper block of an overhead crane.
- Conventional overhead cranes include a wire rope that is reeved between an upper block and a lower block. The upper block typically includes multiple sheaves supported on a main pain and around which the wire rope is reeved. To change the main pin that supports the multiple sheaves, the wire rope typically must be unreeved from the upper block sheaves and the lower block sheaves. A device that permits a main pin of an upper block to be changed without unreeving and re-reeving the upper block would be welcomed by users of overhead cranes.
- It is one embodiment, the invention provides a pin removal assembly for use with an upper block of a crane. The upper block includes a frame, a plurality of sheaves, and a removable sheave pin that defines an axis of rotation for the sheaves and supports the sheaves with the frame. The pin removal assembly comprises a sheave support mountable to the frame of the upper block and a pin support mountable to the upper block. The pin support is configured to support the sheave pin when the sheave pin is removed from the upper block.
- In another embodiment, the invention provides a pin removal assembly for use with an upper block of a crane. The upper block includes a frame, a plurality of sheaves, and a removable sheave pin that defines an axis of rotation for the sheaves and supports the sheaves with the frame. The pin removal assembly comprises a first support bracket attached to a sidewall of to the upper block frame and a sheave support mountable to the first support bracket. The sheave support includes a base portion configured to support the sheaves and a support arm portion releasable mountable to the first support bracket.
- In yet another embodiment, the invention provides an upper block assembly for an overhead crane. The upper block assembly includes an upper block and a pin removal assembly releasable mounted to the upper block. The upper block includes a frame with a first sidewall and a second sidewall, a plurality of sheaves arranged within the frame, and a sheave pin that supports the sheaves within the frame. Each sidewall and each sheave includes a hole therethrough, and the holes defining an axis of rotation and receiving the sheave pin.
- In another embodiment the invention provides a method of supporting an upper block of an overhead crane during replacement of the sheave pin. The upper block includes a frame, a plurality of sheaves and a removable sheave pin that defines an axis of rotation from the sheaves and supports the sheaves within the frame. The method includes mounting first and second support brackets to opposite sidewalls of the upper block frame, mounting a sheave support including a base portion to at least one of the support brackets, and positioning the base portion of the sheave support to support each sheave. The method further includes mounting a pin support to the other support bracket located adjacent the sheave pin and sliding the sheave pin from the upper block wherein the pin support supports the sheave pin.
- Other features and advantages of the invention will become apparent by consideration of the detailed description and accompanying drawings.
-
FIG. 1 is a perspective view of a crane including a trolley having an upper block according tot eh present invention. -
FIG. 2 illustrates a pin removal assembly according tot eh present invention that is connected to an upper block. -
FIG. 3 is a cross-sectional view of the pin removal assembly ofFIG. 1 taken along line 3-3 ofFIG. 1 , and showing a sheave support of the pin removal assembly engaged with a sheave of the upper block. -
FIG. 4 is an end view of the pin removal assembly ofFIG. 1 showing a main pin of the upper block supported by the pin removal assembly before it is inserted into and through the sheaves of the upper block. - Before the embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of the construction and the arrangements of the components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported.” And “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, “Connected” and “couples” are not restricted to physical or mechanical connections or couplings.
- In
FIG. 1 , acrane 10 includes atrolley 16 that moves alonggirder rails 20 that sit atop afirst girder 12 and asecond girder 14. Thefirst girder 12 and thesecond girder 14 translate along amain support beam 18 on one end and an additional support beam (not shown) parallel tobeam 18 at an opposite end of the girders. Thetrolley 16 includes adrum 26 around which is wrapped two wire ropes 54, 56. As thedrum 26 rotates and winds up the wire ropes 54, 56, alower block 30 is lifted, as will be readily apparent to those of skill in the art. As illustrated inFIG. 1 , thelower block 30 includes a hook that can be used for lifting. However, thelower block 30 could include other configurations for lifting, as will also be readily to those of skill in the art - The translation of the
trolley 16 along the first andsecond girders second girders crane 10 to position the lower block 309 in virtually any location in a space in which thecrane 10 is installed. Themain support beam 18 is shown as a straight beam. As will be readily known to those of skill in the art, themain support beam 18 may alternatively be curved to match the inside wall contours of a round building. For example, a polar crane similar tocrane 10, shown inFIG. 1 , may be used in a nuclear containment building that is built in a round configuration, in which case themain support beam 18 will be shaped in a circle instead of a straight line. - As shown in
FIG. 1 , the wire ropes 54, 56 extend from thedrum 26 to thelower block 30, which contains a plurality of sheaves (not shown) around which the wire ropes 54, 56 pass. From thelower block 30, the wire ropes 54, 56 extend to anupper block 28 that also contains a plurality of sheaves (not shown). After reeving back and between thelower block 30 andupper block 28, as will be readily understood by those of ordinary skill in the art, the wire ropes 54, 56 end within theupper block 28. - Referring to
FIG. 2 , theupper block 28 includes anupper block frame 60, a plurality ofsheaves 64 arranged within theframe 60, and asheave pin 68 that supports thesheaves 64 within theframe 60. Theframe 60 illustrated inFIG. 2 includes a plurality ofvertical walls 72, with the two outermost support walls defining first andsecond sidewalls horizontal top wall 76 extends across top surfaces of eachwall 72 between the first andsecond sidewalls sheave pin 68. As will be readily apparent to those of skill in the art, in further embodiments of the upper block frame, other configurations are used, for example, fewer or more vertical walls are included and top or bottom walls are included. - The
sheaves 64 are arranged and aligned in parallel within theupper block frame 60. Each sheave includes a hole 80 (shown inFIG. 3 ) therethrough for receiving thesheave pin 68. Thesheave pin 68 defines an axis ofrotation 84 for thesheaves 64 within theframe 60. Although sevensheaves 64 are shown in the embodiment illustrated inFIG. 2 , it will be readily apparent to those of skill in the art that fewer or more sheaves may be used in theupper block 28. - The
upper block assembly 28 illustrated inFIG. 2 includes apin removal assembly 90 releasably mounted to theupper block 28 for supporting thesheaves 64 and theupper block 28 when thesheave pin 68 is removed from theupper block 28. Thepin removal assembly 90 allows thesheave pin 68 to be removed and/or replaced from theupper block 28 without unreeving the wire ropes 54, 56 from theupper block sheaves 64 and sheaves (not shown) of thelower block 30. Further, thepin removal assembly 90 allows thesheave pin 68 to be removed and reinstalled without removing the upper block sheaves 64. During use, thepin removal assembly 90 supports thesheaves 64 within theupper block frame 60 such that the sheave pin is removable from theupper block 28 without unreeving and re-reeving the wire ropes 54, 56 or removing the upper block sheaves 64. - In the illustrated embodiment, the
pin removal assembly 90 includes afirst support bracket 94, asecond support bracket 98, asheave support 102 for supporting thesheaves 64 and apin support 106 for supporting thesheave pin 68 when thesheave pin 68 is removed from theupper block 28. The first andsecond support brackets second sidewalls upper block frame 60. Thesupport brackets sidewalls sheave support 102 is releasably mounted to thefirst support bracket 94 andpin support 106 is releasably mounted to thesecond support bracket 98. In another embodiment, thesheave support 102 and thepin support 106 are releasably mounted to theupper block frame 60 directly. In still another embodiment, theupper block frame 60 includes keeper plates to which thesheave support 102 and thepin support 106 attach. - In the illustrated embodiment, the
sheave support 102 includes avertical support arm 110 and abase portion 114. Thesupport arm 110 of thesheave support 102 is mounted at one end to thefirst support bracket 94. Thebase portion 114, or beam, is attached to the other end of thesupport arm 110 and extends substantially perpendicular to thesupport arm 110. A plurality ofwedges 118, or V-shaped supports, are attached to thebase position 114 of thesheave support 102. As shown inFIG. 3 , eachwedge 118 is configured to support onesheave 64 when thepin removal assembly 90 is in use. Eachwedge 118 is vertically adjusted with a screw (not shown) to position thewedge 118 to support asheave 64. In a further embodiment, each wedge, or support, is configured to support more than one sheave. Further, it will be readily apparent to those skilled in the art that the wedge may be comprised of one or two pieces. - In the illustrated embodiment, the
pin support 106 includes a verticalfirst support portion 122 and a horizontalsecond support portion 126. Thefirst support portion 122 of thepin support 106 is mounted at one end to thesecond support bracket 98 of theupper block frame 60. The other end of thefirst support portion 122 is attached to thebase portion 114 of thesheave support 102. In another embodiment, thesheave support 102 and thepin support 106 are not attached. - One end of the
second support portion 126 is attached to thesupport portion 122 of thepin support 106. Thesecond support portion 126 extends outward from theupper block frame 60 such that thesecond support portion 126 is substantially aligned in parallel with therotation axis 84 defined by thesheave pin 68. Thesecond support portion 126 is V-shaped and configured to support a sheave pin when thesheave pin 68 is removed from theupper block 28 or a new pin is installed into theupper block 28. It will be readily apparent to those skilled in the art that the second support portion may have any configuration or shape suitable for supporting a sheave pin removed from the upper block. - In the illustrated embodiment, a
cross bar 130 is attached to thesecond support portion 126 of thepin support 106. Thecross bar 130 supports a pulling/pushing mechanism (not shown) for removing thesheave pin 68 from theupper block 28. One example of a pulling/pushing mechanism is a hydraulic cylinder. In the illustrated embodiment, the mechanism is positioned to pull thesheave pin 68 in order to remove the sheave pin from theupper block 28, and to push thesheave pin 68 in order to install thesheave pin 68 into theupper block 28. In a further embodiment, the mechanism is positioned to push thesheave pin 68 in order to remove thesheave pin 68 from the upper block, and to pull thesheave pin 68 in order to install thesheave pin 68 into theupper block 28. Further, in the illustrated embodiment of thepin support 106, abrace member 134 extends between thesecond support portion 126 and thesecond support bracket 98. Thebrace member 134 prevents thesheave pin 68 from falling from thepin support 106 when thepin 68 is removed from theupper block 28. - The
pin removal assembly 90 is not permanently attached to theupper block 28, but is only attached during removal and replacement of thesheave pin 68 relative to theupper block 28. In use, the first andsecond support brackets opposite sidewalls upper block frame 60. Thesheave support 102 is mounted to thefirst support bracket 94. Thewedges 118 are positioned and adjusted individually, or as a unit, such that eachwedge 118 wedge supports one of thesheaves 64. Next thepin support 106 is mounted to thesecond support bracket 98. Thesheave pin 68 is removed from theupper block 28 by a pulling/pushing mechanism and thepin support 106 supports thesheave pin 68 when it is removed from theupper block 28. - To replace the
sheave pin 68 with a new sheave pin (not shown), thesheave pin 68 is removed from thepin support 106 and a new sheave pin is placed in thepin support 106. The new sheave pin is positioned within theupper block 28 to support thesheaves 64 within theupper block 28 by sliding the pin through the holes of theupper block frame 60 and holes 80 of thesheaves 64. During the process of removing and replacing thesheave pin 68, thesheave support 102 supports thesheaves 64 within theupper block frame 60 such that thesheave pin 68 is removable without unreeving the wire ropes 54, 56 from thesheaves 64 or removing the upper block sheaves 64. - It will be readily apparent to those skilled in the art that a pin support is not necessary for supporting sheaves and maintaining the
upper block assembly 28 together during removal of a sheave pin. In another embodiment, the first andsecond support brackets upper block frame 60. In still another embodiment, thevertical support arm 110 of thesheave support 102 and thefirst support portion 12 of thepin support 106 are separately attached to thesupport brackets sheave support 102 andpin support 106, respectively. - The foregoing description of the present invention has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit the invention to the form disclosed herein. Consequently, variations and modifications commensurate with the above teachings, and the skill or knowledge of the relevant art, are within the scope of the present invention. The embodiments described herein are further intended to explain best modes known for practicing the invention and to enable others skilled in the art to utilize the invention in such, or other, embodiments and with various modifications required by the particular applications or uses of the present invention. It is intended that the appended claims be construed to include alternative embodiments to the extent permitted by the prior art. Various features and advantages of the invention are set forth in the following claims.
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/485,244 US8176611B1 (en) | 2005-01-10 | 2009-06-16 | Pin changing device and method |
US13/441,040 US8438713B2 (en) | 2005-01-10 | 2012-04-06 | Pin changing device and method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/032,529 US7562430B2 (en) | 2005-01-10 | 2005-01-10 | Pin changing device and method |
US12/485,244 US8176611B1 (en) | 2005-01-10 | 2009-06-16 | Pin changing device and method |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/032,529 Division US7562430B2 (en) | 2005-01-10 | 2005-01-10 | Pin changing device and method |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/441,040 Division US8438713B2 (en) | 2005-01-10 | 2012-04-06 | Pin changing device and method |
Publications (2)
Publication Number | Publication Date |
---|---|
US20090250423A1 true US20090250423A1 (en) | 2009-10-08 |
US8176611B1 US8176611B1 (en) | 2012-05-15 |
Family
ID=36652394
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/032,529 Active 2026-12-10 US7562430B2 (en) | 2005-01-10 | 2005-01-10 | Pin changing device and method |
US12/485,244 Active US8176611B1 (en) | 2005-01-10 | 2009-06-16 | Pin changing device and method |
US13/441,040 Active US8438713B2 (en) | 2005-01-10 | 2012-04-06 | Pin changing device and method |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/032,529 Active 2026-12-10 US7562430B2 (en) | 2005-01-10 | 2005-01-10 | Pin changing device and method |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/441,040 Active US8438713B2 (en) | 2005-01-10 | 2012-04-06 | Pin changing device and method |
Country Status (3)
Country | Link |
---|---|
US (3) | US7562430B2 (en) |
CA (1) | CA2593830C (en) |
WO (1) | WO2006075987A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7562430B2 (en) * | 2005-01-10 | 2009-07-21 | Mhe Technologies, Inc. | Pin changing device and method |
JP5419581B2 (en) * | 2009-07-31 | 2014-02-19 | 東京エレクトロン株式会社 | Method for assembling transfer mechanism and transfer chamber |
CN105252483B (en) * | 2015-11-24 | 2018-04-06 | 润邦卡哥特科工业有限公司 | A kind of replacing fitting device and its operating method for wire rope pulley axle |
CN108296698B (en) * | 2017-12-30 | 2019-09-10 | 温州职业技术学院 | The automatic assembling apparatus of bearing shell and auricle is assembled on electric machine casing |
US10947089B2 (en) | 2018-09-19 | 2021-03-16 | Konecranes Global Corporation | Bottom block assembly |
CN110405689B (en) * | 2019-08-07 | 2020-11-27 | 海南红塔卷烟有限责任公司 | Auxiliary device for replacing fan bearing of cooling tower |
CN113618404B (en) * | 2021-10-12 | 2021-12-28 | 河南卫华重型机械股份有限公司 | Device for machining inner end face of balance beam of gantry crane boom |
CN114227603B (en) * | 2021-12-24 | 2023-06-13 | 国网山东省电力公司枣庄供电公司 | Current transformer drainage wire appurtenance |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1227457A (en) * | 1915-02-16 | 1917-05-22 | George R Langan | Gear-puller. |
US1394129A (en) * | 1919-06-02 | 1921-10-18 | Alfred R Wickersham | Gear-puller |
US3427726A (en) * | 1964-04-29 | 1969-02-18 | Fur Patentdienst Anstalt | Sieve drum installation |
US3509327A (en) * | 1966-09-12 | 1970-04-28 | Bell Telephone Labor Inc | Character timing and readout of dual-rail shift register |
US4184600A (en) * | 1978-03-31 | 1980-01-22 | Goss John B | Method for removing a bearing assembly of a pedestal crane and a removable bearing assembly for a pedestal crane |
US4235004A (en) * | 1979-02-22 | 1980-11-25 | Floyd William G | Puller for removing pulleys and the like from shafts |
US4287651A (en) * | 1979-04-17 | 1981-09-08 | Otis Elevator Company | Method for fabricating and installing thermoset sheave inserts |
US5058256A (en) * | 1991-02-28 | 1991-10-22 | Bud Taylor | Bearing carrier puller tool |
US5257445A (en) * | 1992-05-29 | 1993-11-02 | Mayberry George M | Bearing and pillow-block puller |
US5649635A (en) * | 1991-09-20 | 1997-07-22 | Manitowac Crane Group, Inc. | Easily removable sheave assembly |
US6085419A (en) * | 1999-06-04 | 2000-07-11 | Daimlerchrysler Corporation | Parts carrier bearing assembly repair method |
US6266860B1 (en) * | 2000-06-19 | 2001-07-31 | Patrick J. Kiebler | Puller for removing a pulley from a shaft |
US6748637B2 (en) * | 2001-11-07 | 2004-06-15 | Campagnolo S.R.L. | Tool for inserting and extracting pins of roller chains |
US7082747B2 (en) * | 2003-05-27 | 2006-08-01 | Shimano, Inc. | Chain connecting pin extracting apparatus |
US20070193247A1 (en) * | 2006-02-21 | 2007-08-23 | Daniels Michael K | Fluid activated connecting pin removal tool |
US7562430B2 (en) * | 2005-01-10 | 2009-07-21 | Mhe Technologies, Inc. | Pin changing device and method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2180541A (en) * | 1935-06-19 | 1939-11-21 | Nichols Harry Talmage | Multiple sheave block construction |
US2672320A (en) * | 1952-04-05 | 1954-03-16 | Regan Forge & Eng Co | Replaceable sheave and bearing construction for sheave blocks |
US3059327A (en) * | 1959-06-22 | 1962-10-23 | Burrows Allen | Pulley removing device |
US3680840A (en) * | 1969-12-30 | 1972-08-01 | Manitowoc Eng Co | Boom sheave assembly |
US3757959A (en) * | 1971-10-19 | 1973-09-11 | Marion Power Shovel Co | Boom point sheave assembly |
US3786935A (en) * | 1972-05-22 | 1974-01-22 | Whiting Corp | Overhead crane |
GB2084502B (en) * | 1980-09-24 | 1983-10-12 | Paul James Edward | A chain pin extractor |
US4676484A (en) * | 1986-02-28 | 1987-06-30 | Parco Mast And Substructure, Inc. | Helicopter transportable traveling block |
-
2005
- 2005-01-10 US US11/032,529 patent/US7562430B2/en active Active
- 2005-01-12 CA CA2593830A patent/CA2593830C/en active Active
- 2005-01-12 WO PCT/US2005/001364 patent/WO2006075987A1/en active Application Filing
-
2009
- 2009-06-16 US US12/485,244 patent/US8176611B1/en active Active
-
2012
- 2012-04-06 US US13/441,040 patent/US8438713B2/en active Active
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1227457A (en) * | 1915-02-16 | 1917-05-22 | George R Langan | Gear-puller. |
US1394129A (en) * | 1919-06-02 | 1921-10-18 | Alfred R Wickersham | Gear-puller |
US3427726A (en) * | 1964-04-29 | 1969-02-18 | Fur Patentdienst Anstalt | Sieve drum installation |
US3509327A (en) * | 1966-09-12 | 1970-04-28 | Bell Telephone Labor Inc | Character timing and readout of dual-rail shift register |
US4184600A (en) * | 1978-03-31 | 1980-01-22 | Goss John B | Method for removing a bearing assembly of a pedestal crane and a removable bearing assembly for a pedestal crane |
US4235004A (en) * | 1979-02-22 | 1980-11-25 | Floyd William G | Puller for removing pulleys and the like from shafts |
US4287651A (en) * | 1979-04-17 | 1981-09-08 | Otis Elevator Company | Method for fabricating and installing thermoset sheave inserts |
US5058256A (en) * | 1991-02-28 | 1991-10-22 | Bud Taylor | Bearing carrier puller tool |
US5649635A (en) * | 1991-09-20 | 1997-07-22 | Manitowac Crane Group, Inc. | Easily removable sheave assembly |
US5257445A (en) * | 1992-05-29 | 1993-11-02 | Mayberry George M | Bearing and pillow-block puller |
US6085419A (en) * | 1999-06-04 | 2000-07-11 | Daimlerchrysler Corporation | Parts carrier bearing assembly repair method |
US6266860B1 (en) * | 2000-06-19 | 2001-07-31 | Patrick J. Kiebler | Puller for removing a pulley from a shaft |
US6748637B2 (en) * | 2001-11-07 | 2004-06-15 | Campagnolo S.R.L. | Tool for inserting and extracting pins of roller chains |
US7082747B2 (en) * | 2003-05-27 | 2006-08-01 | Shimano, Inc. | Chain connecting pin extracting apparatus |
US7562430B2 (en) * | 2005-01-10 | 2009-07-21 | Mhe Technologies, Inc. | Pin changing device and method |
US20070193247A1 (en) * | 2006-02-21 | 2007-08-23 | Daniels Michael K | Fluid activated connecting pin removal tool |
Also Published As
Publication number | Publication date |
---|---|
CA2593830A1 (en) | 2006-07-20 |
US20060151764A1 (en) | 2006-07-13 |
CA2593830C (en) | 2013-11-05 |
US20120192405A1 (en) | 2012-08-02 |
WO2006075987A1 (en) | 2006-07-20 |
US7562430B2 (en) | 2009-07-21 |
US8176611B1 (en) | 2012-05-15 |
US8438713B2 (en) | 2013-05-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8438713B2 (en) | Pin changing device and method | |
CN213537032U (en) | Special clamp crown block for carbon pre-roasting anode workshop | |
KR102117142B1 (en) | Method for carrying elevator counterweight | |
CN109622932B (en) | Method for quickly replacing rotary bearing of large continuous casting ladle turret | |
JP4176188B2 (en) | Elevator hoist and its installation structure | |
CN213085125U (en) | Elevator shaft traction rotary telescopic construction elevator | |
CN108821094A (en) | Lifting tool and method for marine low speed diesel engine electric vibrating compensator | |
JPH11147690A (en) | Low head space reinforcing bar building-in device | |
CN110722344A (en) | Oil cylinder replacing device and oil cylinder replacing method | |
JP4312590B2 (en) | Lower assembly method for elevator upper equipment | |
JP2005231770A5 (en) | ||
JP2005231770A (en) | Elevator modifying method | |
CN219408947U (en) | Crown block frame of petroleum drilling machine | |
CN218088564U (en) | Hoisting device for overhaul of slurry pump | |
CN218371212U (en) | Hoisting tool for web steel bars and top plate steel bars at bottom of box girder | |
CN221093368U (en) | Device for hoisting cross beam of rolling mill | |
CN218746023U (en) | Pin shaft dismounting device | |
CN214560513U (en) | Front suspension dismounting device | |
CN218560923U (en) | Motor maintenance device | |
CN113800408B (en) | Ring rail crane, ring rail crane assembling method and disassembling method | |
CN216471860U (en) | Shelter and oil engine hoisting device thereof | |
JP2005154116A (en) | Terminal support device for elevator rope | |
CN115595891A (en) | Bearing device of outer template for hanging basket | |
CN218780010U (en) | Carbon fiber plate prestress tensioning auxiliary device for reinforcing concrete beam plate | |
CN211712450U (en) | Stable fixing structure for sling cart |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MHE TECHNOLOGIES, INC., DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WAISANEN, STEVEN K.;REEL/FRAME:022830/0694 Effective date: 20050104 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 12 |