US3805967A - Dual hook hoist apparatus - Google Patents
Dual hook hoist apparatus Download PDFInfo
- Publication number
- US3805967A US3805967A US00286565A US28656572A US3805967A US 3805967 A US3805967 A US 3805967A US 00286565 A US00286565 A US 00286565A US 28656572 A US28656572 A US 28656572A US 3805967 A US3805967 A US 3805967A
- Authority
- US
- United States
- Prior art keywords
- pair
- sheave
- sheaves
- set forth
- drum
- 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
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/005—Straddle carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/02—Hoists or accessories for hoists
Definitions
- ABSTRACT A dual hook lifting assembly for a straddle type mobile lift and including a trolley which traverses the gantry crossbeam and carries a pair of sheaves for each hook mounted on the trolleys opposite sides.
- a wire rope having one end fixed and the other end connected to a winch drum, passes around a sheave on the hook block and up over each sheave on the trolley.
- a second reeve of wire is employed in a similar manner for the second hook.
- Mobile type lifts are commonly employed for lifting and moving large bulky objects, such as shipping containers, structural members, modular building sections and the like.
- Such devices are well known and generally include a pair of inverted U-shaped gantries comprising crossbeams spanning vertical legs which are supported at their lower ends on wheels.
- the two gantry assemblies are connected together by spaced side members and may include hoists mounted on the crossbeams of each gantry.
- one prior art apparatus included a second horizontal beam movably supported beneath the gantry crossbeam and having a laterally movable hook carrying trolley. This limited the usable lift distance attainable on a given gantry because of the space requirement for the movable beam.
- Another apparatus for providing traversability plus lifting capacity in prior art gantries includes a movable sheave carrying trolley mounted directly on the gantry crossbeam.
- a reeve of wire rope is normally suspended from each of its opposite sides for sharing the load on the hook which they support. This minimizes the bending moment about the longitudinal axis of the crossbeam but necessitates a minimum of two reeves of wire rope for each hook.
- straddle type mobile lifts are constructed for withstanding large vertical forces resulting from lifting heavy loads, but they have a substantially reduced capability of withstanding horizontal forces, especially those perpendicular to the spaced side members. For this reason when lifting large bulky objects, it is important to hold the load as stable as possible and to prevent the suspended load from swinging which would result in generation of horizontal force components on the lift structure.
- such lifts may have two hooks on each gantry. The hooks may be spaced apart on each gantry and provide a four point connection with the load thus reducing swinging mo tion of the load.
- the use of two hooks on each gantry necessarily results in a complex lifting system involving multiple reeves of cable for each hook. Such a system is generally expensive because of the large number of parts and is also inefficient due to the multiplicity of sheaves required.
- Another object of the invention is to provide a dual hook lifting apparatus having means for the selective adjustment of the horizontal spacing between the hooks.
- the invention comprises a dual hook hoist apparatus having two pairs of laterally spaced sheaves and a pair of wire ropes one of which extends around a sheave on each hook and both sheaves of a different one of the pairs of sheaves.
- the ends of each rope are coupled to a common drum assembly for simultaneously raising or lowering the two books.
- the sheaves may be mounted on a trolley to permit traversing of the load along the crossbeam of the straddle lift while maintaining the vertical position of the hooks constant.
- FIG. 1 is a perspective view of a straddle type lifting device to which the invention is primarily directed;
- FIG. 2 is a side elevational view of the lift mechanism according to a preferred embodiment of the present invention.
- FIG. 3 is a top plan view of the trolley portion of the lift mechanism illustrated in FIG. 2;
- FIG. 4 is a view taken along lines 44 of FIG. 2;
- FIG. 5 is an enlarged view of the trolley taken along line 5-5 of FIG. 2;
- FIG. 6 is a schematic diagram of the hoist system according to the invention.
- the straddle type mobile crane to which the invention is particularly adaptable is shown to include a pair of U-shaped gantries which are connected by spaced side members 11.
- Each gantry includes a pair of vertical leg members 12 having support wheels 13 at their lower ends and connected by horizontal cross members 14 at their upper ends.
- Each gantry also carries a lifting assembly 15 which are identical and accordingly only one will be described for the sake of brevity.
- the lifting assemblies each includes a winch drum 16, a trolley 17, a pair of idler sheaves 18A and 18B and a pair of hook blocks 19A and 198.
- the winch drum l6 and drive motor 16' are mounted on one of the vertical gantry legs 12.
- the hook blocks 19A and 19B are respectively positioned by wire ropes 20A and 20B and wound around the winch drum 16.
- the ropes 20 may be wound on the drum 16 in a suitable manner such that they are simultaneously wound or unwound.
- the trolley 17 is mounted for movement on each of the gantry cross members 14 by means of wheels 24 which ride on flanges 25 extending laterally from each side of members 14.
- the trolleys 17 each include a frame assembly 26 having a transverse member 27 at each end for supporting a pair of brackets 28 which extend generally parallel to frame assembly 26.
- a shaft 29 passes through each bracket 28 and has the trolley wheels 24 and sheaves 30A, 31A, 30B and 318 respectively rotatably mounted thereon.
- the trolley wheels 24 are mounted on bearings 34 and rotate independently of their respective sheaves which are individually mounted on their own bearings 34'.
- the frame assembly 26 includes telescoping tubes 32 and 33 which carry the cross members 27 at their opposite ends. Tube 32 is hollow for receiving the smaller diameter tube 33.
- the length of the trolley 17 may be adjusted by means of a releasable coupling assembly 35 having a pin 37 which is selectively insertable into a hole 38 formed in tube 32 and any one of a plurality of apertures 40 formed in tube 33.
- the coupling assembly 35 includes a generally U-shaped bracket 41 attached to tube 32 adjacent hole 38 by suitable means, such as screws 42.
- the pin 37 has a ring 44 at its lower end, and a flange 45 between the tube 32 and the interior surface of bracket 41.
- a spring 46 surrounds pin 37 and biases the same upwardly through holes 38 and 40.
- ring 44 may be pulled down thereby disengaging the pin from the tubes so that the span between the wheel brackets may be modified. This allows the span to be adjusted for various width loads to keep the cables as vertical as possible and thereby decrease cable tension and structural stresses in the trolley.
- the cross members 14 may be generally I-shaped in vertical cross section and have a central web 48 and flanges 25. As seen in FIGS. 2 and 4, the trolley 17 straddles the center web 48 of cross member 14 and wheels 24 ride on flanges 25.
- a reversible drive motor 49 coupled with suitable reduction gearing 50 drives a first sprocket 52 disposed on one end of beam 14.
- a second sprocket 53 is disposed at the opposite end of the beam and is coupled to sprocket 52 by a continuous chain drive 54.
- One link at each end of the chain 54 is affixed to the trolley bracket 22. In this manner, operation of motor 49 moves the trolley along member 14.
- the motor 49 may be of any type well known in the art and may be either electrically or hydraulically driven, for example.
- Hook block 19A consists of a sheave 60A rotatably mounted between parallel plates 63 and 64 which are held in a fixed parallel relationship by a bottom plate 65 and top cross member 66.
- a lift hook 67 is affixed to the bottom plate 65 and may be mounted for rotation about a vertical axis by means of a threaded hook shank 68 and nut 69.
- FIG. 6 schematically illustrates the lifting assembly 15.
- the winch drum 16 has two strands of wire rope A and 20B, wound around -it and extending up and reeved over idler sheaves 18A and 188 which are journaled on the end of cross member 14.
- Tracing wire rope 20A it is seen to be reeved over sheave A which is located on one side of the trolley 17, pass downwardly through sheave 60A carried by a hook block 19A, continue upwardly and over sheave 31A located on the opposite side of the trolley 17 and at the same end of the trolley as sheave 30.
- FIG. 6 schematically illustrates the lifting assembly 15.
- the winch drum 16 has two strands of wire rope A and 20B, wound around -it and extending up and reeved over idler sheaves 18A and 188 which are journaled on the end of cross member 14.
- Tracing wire rope 20A it is seen to be reeved over sheave A which is located on one side of
- sheaves 30A and 31A and 30B and 31B rotate about shafts which are fixed to the trolley assembly, it will also be appreciated that as the trolley istraversed along the beam, for example in the direction of the arrow, both sheaves 30A and 30B will translate in the same direction and at the same rate so taht the hook 19A will remain at the same relative elevation. In this manner, the load can be traversed without vertical movement of the load.
- each hook block 19A and 19B has a strand of wire rope extending upward to the trolley assembly with one strand reeved through a sheave 30A or 308 on one side of the trolley and the other strand reeved through a sheave 31A or 31B on the other side.
- a load is imposed upon either lift hook 19A or 198, it will impose substantially equal downward forces on either-side of the trolley producing a minimum of torsional force upon the beam cross member 14.
- Lifting apparatus including:
- first and second pairs of sheave means rotatably mounted in spaced relation on said carrier means, said first and second pairs of sheave means being space along said path, V
- drum means rotatably mounted on said support means
- first and second spaced apart, independently supported lifting means each having a sheave means rotatably mounted thereon, said first and second lifting means being spaced along said path and each being substantially below said first and second pair of sheave means, respectively, and
- first and second rope means each having one end fixed to said support means and its other end coupled to said drum means, one of said rope means also extending over each of the sheave means of said first pair and around the sheave means of said first lifting means and said second rope means extending over each of the sheave means of said second pair and aroundthe sheave means of said second lifting means.
- sheave means of said first pair are rotatably mounted "about a common, substantially horizontal first axis and the sheave means of said second pair are rotatably mounted about a common substantially hori; zontal second axis spaced from said first axis, each of said sheave means of said first and second pairs being mounted on opposite sides of said carrier means.
- first pair of sheave means and a second portion for supporting said second pair of sheave means and adjustable coupling means for coupling said first and sec-- ond portions for selectively varying the distance between said first and second pair of sheave means.
- said carrier means includes a first portion for supporting said first pair of sheave means and a second portion for supporting said second pair of sheave means and adjustable coupling means for coupling said first and second portions for selectively varying the distance between said first and second pair of sheave means.
- said support means comprises a straddle type mobile crane including a pair of spaced gantries having side memcross member and side members and between said carrier means and said drum means, each of said first and second rope means extending over one of the sheaves of said third pair.
- each of said first and second pairs of sh eaye means are mounted for rotation about substantially horizontal axes, each of the sheave means of said first and second pairs being independently rotatably mounted on opposite sides of said carrier means.
- said carrier means includes a first portion for supporting said first pair of sheave means and a second portion for supporting said second pair of sheave means and adjustable coupling means for coupling said first and second portions for selectively varying the distance between said first and second pair of sheave means.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
Description
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00286565A US3805967A (en) | 1972-09-05 | 1972-09-05 | Dual hook hoist apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00286565A US3805967A (en) | 1972-09-05 | 1972-09-05 | Dual hook hoist apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US3805967A true US3805967A (en) | 1974-04-23 |
Family
ID=23099179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00286565A Expired - Lifetime US3805967A (en) | 1972-09-05 | 1972-09-05 | Dual hook hoist apparatus |
Country Status (1)
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US (1) | US3805967A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3945675A (en) * | 1974-05-30 | 1976-03-23 | Nippon Kokan Kabushiki Kaisha | Block loader |
US4305513A (en) * | 1979-10-04 | 1981-12-15 | Renner Manufacturing | Slack cable sensing apparatus |
US4378072A (en) * | 1980-06-16 | 1983-03-29 | Rpc Corporation | Gantry crane |
EP0147487A1 (en) * | 1983-12-29 | 1985-07-10 | Man Gutehoffnungshütte Gmbh | Installation for raising and lowering sceneries on a stage |
FR2584059A1 (en) * | 1985-06-28 | 1987-01-02 | Lerolland Marcel | Lifting gantry crane with load balancing |
EP0236976A1 (en) * | 1986-03-10 | 1987-09-16 | PHB Weserhütte AG | Device for transporting containers or piece goods |
US4735327A (en) * | 1986-05-30 | 1988-04-05 | The United States Of America As Represented By The Secretary Of Agriculture | Radio controlled downhill skyline logging carriage and system |
US5273332A (en) * | 1992-05-13 | 1993-12-28 | Currie Michael D | Top side transmission lift |
US5924545A (en) * | 1996-03-18 | 1999-07-20 | Isi Norgren Inc. | Rotatable shuttle transfer unit |
US20050236608A1 (en) * | 2004-04-27 | 2005-10-27 | Ascom S.P.A. | Lifting unit |
US20100181788A1 (en) * | 2009-01-21 | 2010-07-22 | Konecranes PIc | Dual chain hoist arrangement |
US20140097630A1 (en) * | 2012-09-26 | 2014-04-10 | Mathew Kevin HEYDON | Load transfer device |
CN103950010A (en) * | 2014-05-14 | 2014-07-30 | 湖州市千金丝织厂 | Auxiliary device for disassembly of machine head roller of cotton cleaner |
CN105417397A (en) * | 2015-12-14 | 2016-03-23 | 中建六局安装工程有限公司 | Moving type jacking and lifting transporting equipment and method |
US20170267501A1 (en) * | 2014-08-26 | 2017-09-21 | C. Steinweg-Handelsveem B.V. | Device and method for loading a sea container with an elongated heavy product or a row of heavy products |
WO2019209592A3 (en) * | 2018-04-24 | 2019-12-05 | Rutgers, The State University Of New Jersey | Low profile transfer mechanism for controlled environment |
US20200095100A1 (en) * | 2018-09-21 | 2020-03-26 | Liebherr-Werk Ehingen Gmbh | Method for determining the rope reeving of a pulley block |
US11034557B2 (en) * | 2017-06-29 | 2021-06-15 | Christopher Hartke | Rail-guided lifting device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2656196A (en) * | 1950-03-08 | 1953-10-20 | Fellabaum John Phil | Trailer vehicle with demountable wheel trucks |
US3111228A (en) * | 1962-02-12 | 1963-11-19 | Cleveland Crane Eng | Crane |
US3146903A (en) * | 1960-06-06 | 1964-09-01 | Clark Equipment Co | Straddle truck with a guided lifting frame for handling containers |
US3247974A (en) * | 1964-05-11 | 1966-04-26 | Harnischfeger Corp | Grab stabilizer for cranes |
-
1972
- 1972-09-05 US US00286565A patent/US3805967A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2656196A (en) * | 1950-03-08 | 1953-10-20 | Fellabaum John Phil | Trailer vehicle with demountable wheel trucks |
US3146903A (en) * | 1960-06-06 | 1964-09-01 | Clark Equipment Co | Straddle truck with a guided lifting frame for handling containers |
US3111228A (en) * | 1962-02-12 | 1963-11-19 | Cleveland Crane Eng | Crane |
US3247974A (en) * | 1964-05-11 | 1966-04-26 | Harnischfeger Corp | Grab stabilizer for cranes |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3945675A (en) * | 1974-05-30 | 1976-03-23 | Nippon Kokan Kabushiki Kaisha | Block loader |
US4305513A (en) * | 1979-10-04 | 1981-12-15 | Renner Manufacturing | Slack cable sensing apparatus |
US4378072A (en) * | 1980-06-16 | 1983-03-29 | Rpc Corporation | Gantry crane |
EP0147487A1 (en) * | 1983-12-29 | 1985-07-10 | Man Gutehoffnungshütte Gmbh | Installation for raising and lowering sceneries on a stage |
FR2584059A1 (en) * | 1985-06-28 | 1987-01-02 | Lerolland Marcel | Lifting gantry crane with load balancing |
EP0236976A1 (en) * | 1986-03-10 | 1987-09-16 | PHB Weserhütte AG | Device for transporting containers or piece goods |
US4735327A (en) * | 1986-05-30 | 1988-04-05 | The United States Of America As Represented By The Secretary Of Agriculture | Radio controlled downhill skyline logging carriage and system |
US5273332A (en) * | 1992-05-13 | 1993-12-28 | Currie Michael D | Top side transmission lift |
US5924545A (en) * | 1996-03-18 | 1999-07-20 | Isi Norgren Inc. | Rotatable shuttle transfer unit |
US6142725A (en) * | 1996-03-18 | 2000-11-07 | Norgren Automotive, Inc. | Rotatable shuttle transfer unit |
US20050236608A1 (en) * | 2004-04-27 | 2005-10-27 | Ascom S.P.A. | Lifting unit |
EP1591407A1 (en) * | 2004-04-27 | 2005-11-02 | Ascom S.P.A. | Lifting unit |
US7093823B2 (en) * | 2004-04-27 | 2006-08-22 | Ascom S.P.A. | Lifting unit |
EP2210849A1 (en) * | 2009-01-21 | 2010-07-28 | Konecranes Plc | Double chain hoist assembly |
CN101786573A (en) * | 2009-01-21 | 2010-07-28 | 科尼起重机设备有限公司 | Double chain hoist assembly |
JP2010168219A (en) * | 2009-01-21 | 2010-08-05 | Konecranes Plc | Double chain hoist device |
US8226137B2 (en) * | 2009-01-21 | 2012-07-24 | Konecranes Plc | Dual chain hoist arrangement |
RU2507145C2 (en) * | 2009-01-21 | 2014-02-20 | КОНЕКРЕЙНС ПиЭлСи | Lifter with two chains |
US20100181788A1 (en) * | 2009-01-21 | 2010-07-22 | Konecranes PIc | Dual chain hoist arrangement |
US20140097630A1 (en) * | 2012-09-26 | 2014-04-10 | Mathew Kevin HEYDON | Load transfer device |
CN103950010A (en) * | 2014-05-14 | 2014-07-30 | 湖州市千金丝织厂 | Auxiliary device for disassembly of machine head roller of cotton cleaner |
CN103950010B (en) * | 2014-05-14 | 2015-09-23 | 湖州市千金丝织厂 | A kind of scutcher headstock roller dismounting auxiliary equipment |
US20170267501A1 (en) * | 2014-08-26 | 2017-09-21 | C. Steinweg-Handelsveem B.V. | Device and method for loading a sea container with an elongated heavy product or a row of heavy products |
CN105417397A (en) * | 2015-12-14 | 2016-03-23 | 中建六局安装工程有限公司 | Moving type jacking and lifting transporting equipment and method |
CN105417397B (en) * | 2015-12-14 | 2017-07-25 | 中建六局安装工程有限公司 | A kind of Mobile hoisting hoisting transportation device and method |
US11034557B2 (en) * | 2017-06-29 | 2021-06-15 | Christopher Hartke | Rail-guided lifting device |
WO2019209592A3 (en) * | 2018-04-24 | 2019-12-05 | Rutgers, The State University Of New Jersey | Low profile transfer mechanism for controlled environment |
US12098026B2 (en) | 2018-04-24 | 2024-09-24 | Rutgers, The State University Of New Jersey | Low profile transfer mechanism for controlled environment |
US20200095100A1 (en) * | 2018-09-21 | 2020-03-26 | Liebherr-Werk Ehingen Gmbh | Method for determining the rope reeving of a pulley block |
US11999601B2 (en) * | 2018-09-21 | 2024-06-04 | Liebherr-Werk Ehingen Gmbh | Method for determining the rope reeving of a pulley block |
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Legal Events
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STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
AS | Assignment |
Owner name: RENNER SMITH MANUFACTURING, INC., 4810 NORTH 124TH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE SEPT. 23, 1986;ASSIGNOR:RENNER MANUFACTURING COMPANY;REEL/FRAME:004717/0349 Effective date: 19860923 |
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Owner name: FIRST MIDWEST BANK, NATIONAL ASSOCIATION, Free format text: SECURITY INTEREST;ASSIGNOR:RENNER SMITH MANUFACTURING, INC.;REEL/FRAME:004705/0214 Effective date: 19870319 Owner name: FIRST MIDWEST BANK, NATIONAL ASSOCIATION,STATELESS Free format text: SECURITY INTEREST;ASSIGNOR:RENNER SMITH MANUFACTURING, INC.;REEL/FRAME:004705/0214 Effective date: 19870319 |
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Owner name: FIRST MIDWEST BANK N.A., NATIONAL ASSOCIATION, 214 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:RENNER SMITH MANUFACTURING INC.,;REEL/FRAME:004865/0033 Effective date: 19880414 Owner name: MANITOWOC COMPANY, INC., THE, 500 SOUTH 16TH STREE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FIRST MIDWEST BANK N.V.,;REEL/FRAME:004865/0046 Effective date: 19880408 Owner name: FIRST MIDWEST BANK N.A., NATIONAL ASSOCIATION,ILLI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RENNER SMITH MANUFACTURING INC.,;REEL/FRAME:004865/0033 Effective date: 19880414 Owner name: MANITOWOC COMPANY, INC., THE,WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FIRST MIDWEST BANK N.V.,;REEL/FRAME:004865/0046 Effective date: 19880408 |