US3212455A - Hoist trolley antitilting means - Google Patents

Hoist trolley antitilting means Download PDF

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US3212455A
US3212455A US300883A US30088363A US3212455A US 3212455 A US3212455 A US 3212455A US 300883 A US300883 A US 300883A US 30088363 A US30088363 A US 30088363A US 3212455 A US3212455 A US 3212455A
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hoist
trolley
assembly
track
side plates
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US300883A
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Lawrence H Workman
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Gardner Denver Inc
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Gardner Denver Inc
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    • 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
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/01—General aspects of mobile cranes, overhead travelling cranes, gantry cranes, loading bridges, cranes for building ships on slipways, cranes for foundries or cranes for public works
    • B66C2700/012—Trolleys or runways
    • B66C2700/017—Installations characterised by their destination or by the load-engaging element for as far as the trolley is essential

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  • This invention relates to a hoist trolley having means for preventing tilting of the trolley relative to a suspending track or rail; and more particularly to an integrated or unitized trolley and hoist assembly having antifriction means for engaging the lower face of a suspending track or rail to prevent tilting of the assembly.
  • hoists for use in low headroom areas, it has become necessary to integrate the trolley and hoist into a unitized assembly in order to minimize the distance between the suspending rail and the load book.
  • the hoist and trolley are, then, a rigid assembly as opposed to the conventional hoist suspension wherein the hoist is suspended from a trolley by means of a hook.
  • the hoist assembly may pivot relative to the trolley to accommodate any unbalance in the hoist assembly, due particularly to control equipment or accessory equipment mounted on the hoist body.
  • any unbalance of the assembly may cause the entire assembly to tilt relative to the track thereby lifting certain of the trolley wheels off the supporting flange of the track. Such tilting may cause the trolley to jam on the track, or may cause damage to the trolley resulting in a safety hazard.
  • safety engineers require means for preventing such tilting.
  • FIGURE 1 depicts an integrated trolley hoist assembly, as viewed along a supporting track, including an antitilting arm assembly;
  • FIGURE 2 depicts the assembly of FIGURE 1, as viewed from the side of the supporting track; and is partially broken away to show details as viewed along the line 22 of FIGURE 1;
  • FIGURE 3 is a perspective view of the antitilting arm assembly shown in FIGURES 1 and 2.
  • the invention is embodied in an integrated trolley hoist assembly consisting of a hoist 11, having a generally cylindrical body, rigidly secured to a trolley 13 which carries the assembly along a suspending track such as an I-beam 15.
  • the hoist 11 is an air operated hoist, of a well-known type, having an elongated generally cylindrical body; the body enclosing a chain sprocket in the central portion, a driving air motor in one end, and reduction gearing and braking mechanism in the other end.
  • Housing portion 16 of the hoist encloses the control valves for the hoist motor.
  • An opening 17 is provided in the hoist body for the load chain and hook 19, and for mounting an actuator arm 21 for a rope control.
  • each side of the central portion of the hoist body there are provided a pair of integral bosses 23 which project laterally from the upper portion of the body, lying in planes transverse to the longitudinal axis of the hoist. These bosses are provided with holes aligned parallel with the longitudinal axis of the body, for the purpose of securing the hoist to the trolley 13, as will be described.
  • a flatted recess 25 is provided at the top of the hoist body for accommodating the lower flange of the I-beam 15 when the hoist is assembled with the trolley and mounted on the I-beam.
  • the upper surfaces of the bosses 23 lie in the same plane as the flatted portion of the recess 25, so that these bosses lie close to the lower face of the I-beam, in the above mentioned assembled relation.
  • the trolley 13 consists of a pair of side plates 31 which are secured to the hoist 11 by means of studs 33 which pass through suitable holes in the side plates and through the holes in the bosses 23.
  • the side plates are spaced from the respective bosses by means of washers 35 which fix the distance between the side plates, as determined by the width of the flange of the I-beam. In the drawing, all of the washers 35 are placed between the respective bosses and side plates; however, for a narrower I-beam flange, some of the washers might be placed outside of the side plates.
  • the assembly of the hoist body, side plates and washers is rigidly secured together by nuts 37 threaded onto the ends of the studs 33.
  • Two flanged wheels 39 are rotatably mounted on each of the side plates 31 to ride on the upper faces of the lower I-beam flange, and to support the assembly of the trolley and hoist.
  • the ends of the side plates 31 extend inwardly toward each other to form protective bumpers 32.
  • any unbalance of the assembly relative to the I- beam, or an unbalancing force applied to the assembly may cause the assembly to tilt relative to the beam whereby the trolley is supported by only two of the flanged Wheels, for example. Such tilting may cause damage to the trolley, which may result in a safety hazard. Such tilting would probably occur more frequently when there is no load on the hoist; particularly when accessory equipment (not shown in the drawings) is mounted on the hoist or trolley.
  • the hoist assembly might include an air operated pendent control, for example, which would normally be attached to the housing portion 16 which houses the motor valve assembly. This would create additional weight at the extreme end of the hoist body.
  • the trolley might be provided with a drive motor and associated pendent control, for example, mounted on one of, the side plates for the purpose of driving the associated wheels 39. This also might produce an unbalancing weight on one side of the assembly. Further, the operatormay apply an unbalancing force in his handling of the above mentioned pendent controls or the illustrated rope control. For these reasons, it is desirable to provide means for preventing excessive tilting of the assembly.
  • each arm assembly consists of a rocker arm 45 having a hub portion 47 intermediate its ends, the hub having a transverse bore defining a pivot bearing for the arm.
  • a parallel bore is provided at one extremity of the arm 45 to accommodate a shaft upon which are rotatably mounted two rollers 49.
  • the rollers are positioned on the shaft on either side of the arm, and may be secured to the shaft by means of snap rings for example.
  • a threaded bore transverse to the pivot axis, which accommodates an adjustment screw 51 and lock nut 53 for the purpose of adjusting the position of the rollers 49 relative to the I-beam.
  • roller assemblies are provided, each being pivotally mounted on one of the studs 33 and being positioned between the two bosses 23 at one side of the hoist body.
  • the inner ends of the adjustment screws 51 bear against the sides of the hoist 11; and the screws are adjusted to position the rollers 39 close to the lower face of the I- beam.
  • Some clearance is provided between the rollers and the beam to eliminate rolling contact during normal operation of the hoist and to accommodate any irregularities in the surface of the I-beam; however, such clearance is held to a minimum to permit only very slight tilting of the trolley hoist assembly.
  • the adjustability of the arm permits use of the hoist trolley assembly with supporting beams or rails of different configurations.
  • the rollers 49 permit the hoist trolley assembly to move freely along the track when tilting does occur.
  • a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
  • a hoist comprising a rigid body; a trolley comprising a pair of side plates rigidly connected to said hoist body; wheels carried by each of said side plates to ride on one of the track flanges;
  • a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
  • a hoist comprising a rigid body; a trolley comprising a pair of side plates rigidly connected to said hoist body; wheels carried by each of said plates to ride on one of the track flanges;
  • a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
  • a hoist comprising a rigid body; a trolley comprising a pair of side plates rigidly connected to said hoist body; wheels carried by each of said side plates to ride on one of the track flanges;
  • rocker arms mounted at opposite ends of the assembly, along the track, for pivotal movement in vertical planes; rollers mounted at the upper ends of said rocker arms for engagement with the lower face of the track;
  • a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
  • a hoist comprising a body having a pair of apertured bosses projecting from each of opposite sides thereof; a trolley comprising a pair of apertured side plates; wheels carried by each of said side plates to ride on one of the track flanges; a pair of studs, each passing through apertures in said side plates and in one of said pairs of bosses to rigidly secure said side plates to said hoist body;
  • each of said arms having a hub portion intermediate its ends provided with a transverse bore defining a pivot bearing, a pair of rollers rotatably mounted at one end of said arm about an axis parallel to the pivot axis, the other end of said arm having a threaded bore transverse to said pivot axis, and an adjustment screw threaded into said threaded bore;
  • each of said rocker arms being mounted on one of said studs between one of said pairs of bosses, said studs passing through said hub bores and defining pivot journals for said arms; and said adjustment screws bearing against said hoist body to position said rollers in predetermined space relation to the lower face of the track to prevent excessive tilting of the hoist trolley assembly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)

Description

Oct. 19, 1965 L. H. WORKMAN 3,212,455
HOIST TROLLEY ANTITILTING MEANS Filed Aug. 8, 1963 I NVENTOR.
L A WRENCE WORK/WAN BY fvzzw 9.
ATTORNEY United States Patent 3,212,455 HOIST TROLLEY ANTITILTING MEANS Lawrence H. Workman, Muskegon, Mich., assignor to Gardner-Denver Company, a corporation of Delaware Filed Aug. 8, 1963, Ser. No. 300,883 4 Claims. (Cl. 105155) This invention relates to a hoist trolley having means for preventing tilting of the trolley relative to a suspending track or rail; and more particularly to an integrated or unitized trolley and hoist assembly having antifriction means for engaging the lower face of a suspending track or rail to prevent tilting of the assembly.
With the development of hoists for use in low headroom areas, it has become necessary to integrate the trolley and hoist into a unitized assembly in order to minimize the distance between the suspending rail and the load book. The hoist and trolley are, then, a rigid assembly as opposed to the conventional hoist suspension wherein the hoist is suspended from a trolley by means of a hook. With the hook suspension, the hoist assembly may pivot relative to the trolley to accommodate any unbalance in the hoist assembly, due particularly to control equipment or accessory equipment mounted on the hoist body. With a unitized assembly of trolley and hoist, any unbalance of the assembly may cause the entire assembly to tilt relative to the track thereby lifting certain of the trolley wheels off the supporting flange of the track. Such tilting may cause the trolley to jam on the track, or may cause damage to the trolley resulting in a safety hazard. In many hoist installations, safety engineers require means for preventing such tilting.
An object of this invention is to provide an antitilting means for a hoist trolley which prevents tilting of the trolley relative to the suspending track. Another object of this invention is to provide such an antitilting means having rollers which engage the lower face of the track to minimize friction when tilting does occur. A further object of this invention is to provide such an antitilting means which is readily adjustable to accommodate suspending tracks of dilferent size.
The novel features of the invention, as well as additional objects and advantages thereof, will be understood more fully from the following description when read in connection with the accompanying drawing, in which:
FIGURE 1 depicts an integrated trolley hoist assembly, as viewed along a supporting track, including an antitilting arm assembly;
FIGURE 2 depicts the assembly of FIGURE 1, as viewed from the side of the supporting track; and is partially broken away to show details as viewed along the line 22 of FIGURE 1; and
FIGURE 3 is a perspective view of the antitilting arm assembly shown in FIGURES 1 and 2.
Referring now to the drawings in detail, the invention is embodied in an integrated trolley hoist assembly consisting of a hoist 11, having a generally cylindrical body, rigidly secured to a trolley 13 which carries the assembly along a suspending track such as an I-beam 15. The hoist 11 is an air operated hoist, of a well-known type, having an elongated generally cylindrical body; the body enclosing a chain sprocket in the central portion, a driving air motor in one end, and reduction gearing and braking mechanism in the other end. Housing portion 16 of the hoist encloses the control valves for the hoist motor. An opening 17 is provided in the hoist body for the load chain and hook 19, and for mounting an actuator arm 21 for a rope control.
On each side of the central portion of the hoist body there are provided a pair of integral bosses 23 which project laterally from the upper portion of the body, lying in planes transverse to the longitudinal axis of the hoist. These bosses are provided with holes aligned parallel with the longitudinal axis of the body, for the purpose of securing the hoist to the trolley 13, as will be described. A flatted recess 25 is provided at the top of the hoist body for accommodating the lower flange of the I-beam 15 when the hoist is assembled with the trolley and mounted on the I-beam. The upper surfaces of the bosses 23 lie in the same plane as the flatted portion of the recess 25, so that these bosses lie close to the lower face of the I-beam, in the above mentioned assembled relation.
The trolley 13 consists of a pair of side plates 31 which are secured to the hoist 11 by means of studs 33 which pass through suitable holes in the side plates and through the holes in the bosses 23. The side plates are spaced from the respective bosses by means of washers 35 which fix the distance between the side plates, as determined by the width of the flange of the I-beam. In the drawing, all of the washers 35 are placed between the respective bosses and side plates; however, for a narrower I-beam flange, some of the washers might be placed outside of the side plates. The assembly of the hoist body, side plates and washers is rigidly secured together by nuts 37 threaded onto the ends of the studs 33. Two flanged wheels 39 are rotatably mounted on each of the side plates 31 to ride on the upper faces of the lower I-beam flange, and to support the assembly of the trolley and hoist. The ends of the side plates 31 extend inwardly toward each other to form protective bumpers 32.
Since the entire assembly of the trolley and hoist is rigid, any unbalance of the assembly relative to the I- beam, or an unbalancing force applied to the assembly, may cause the assembly to tilt relative to the beam whereby the trolley is supported by only two of the flanged Wheels, for example. Such tilting may cause damage to the trolley, which may result in a safety hazard. Such tilting would probably occur more frequently when there is no load on the hoist; particularly when accessory equipment (not shown in the drawings) is mounted on the hoist or trolley. The hoist assembly might include an air operated pendent control, for example, which would normally be attached to the housing portion 16 which houses the motor valve assembly. This would create additional weight at the extreme end of the hoist body. The trolley might be provided with a drive motor and associated pendent control, for example, mounted on one of, the side plates for the purpose of driving the associated wheels 39. This also might produce an unbalancing weight on one side of the assembly. Further, the operatormay apply an unbalancing force in his handling of the above mentioned pendent controls or the illustrated rope control. For these reasons, it is desirable to provide means for preventing excessive tilting of the assembly.
The preferred form of antitilting means, according to the present invention, consists of two arm assemblies which are pivotally mounted and adjustable to engage the lower face of the I-beam in the event of excessive tilting. As best shown in FIGURE 3, each arm assembly consists of a rocker arm 45 having a hub portion 47 intermediate its ends, the hub having a transverse bore defining a pivot bearing for the arm. A parallel bore is provided at one extremity of the arm 45 to accommodate a shaft upon which are rotatably mounted two rollers 49. The rollers are positioned on the shaft on either side of the arm, and may be secured to the shaft by means of snap rings for example. At the other extremity of the arm 45 there is provided a threaded bore, transverse to the pivot axis, which accommodates an adjustment screw 51 and lock nut 53 for the purpose of adjusting the position of the rollers 49 relative to the I-beam.
Two of the above described roller assemblies are provided, each being pivotally mounted on one of the studs 33 and being positioned between the two bosses 23 at one side of the hoist body. As best shown in FIGURE 2, the inner ends of the adjustment screws 51 bear against the sides of the hoist 11; and the screws are adjusted to position the rollers 39 close to the lower face of the I- beam. Some clearance is provided between the rollers and the beam to eliminate rolling contact during normal operation of the hoist and to accommodate any irregularities in the surface of the I-beam; however, such clearance is held to a minimum to permit only very slight tilting of the trolley hoist assembly. The adjustability of the arm permits use of the hoist trolley assembly with supporting beams or rails of different configurations. The rollers 49 permit the hoist trolley assembly to move freely along the track when tilting does occur.
What is claimed is:
1. In a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
a hoist comprising a rigid body; a trolley comprising a pair of side plates rigidly connected to said hoist body; wheels carried by each of said side plates to ride on one of the track flanges;
an arm pivotally mounted on said assembly, having a bearing member in position to engage the lower face of the track;
and means for adjusting the angular position of said arm, relative to its pivot axis, to position said arm bearing member in predetermined space relation to the track to prevent excessive tilting of the hoist trolley assembly.
2. In a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
a hoist comprising a rigid body; a trolley comprising a pair of side plates rigidly connected to said hoist body; wheels carried by each of said plates to ride on one of the track flanges;
an arm, having a roller mounted thereon, pivotally mounted on said assembly in position to engage the lower face of the track;
and means for adjusting the angular position of said arm, relative to its pivot axis, to position said roller in predetermined space relation to the track to prevent excessive tilting of the hoist trolley assembly.
3. In a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
a hoist comprising a rigid body; a trolley comprising a pair of side plates rigidly connected to said hoist body; wheels carried by each of said side plates to ride on one of the track flanges;
a pair of rocker arms mounted at opposite ends of the assembly, along the track, for pivotal movement in vertical planes; rollers mounted at the upper ends of said rocker arms for engagement with the lower face of the track;
and adjustment means mounted at the lower ends of said rocker arms bearing on said assembly for adjusting the angular positions of said arms relative to the pivot axes, to position said rollers in predetermined space relation to the track to prevent excessive tilting of the hoist assembly.
4. In a hoist trolley assembly for use on a track comprising an upstanding central portion with a lateral flange extending to each side from the lower edge thereof:
a hoist comprising a body having a pair of apertured bosses projecting from each of opposite sides thereof; a trolley comprising a pair of apertured side plates; wheels carried by each of said side plates to ride on one of the track flanges; a pair of studs, each passing through apertures in said side plates and in one of said pairs of bosses to rigidly secure said side plates to said hoist body;
a pair of rocker arms; each of said arms having a hub portion intermediate its ends provided with a transverse bore defining a pivot bearing, a pair of rollers rotatably mounted at one end of said arm about an axis parallel to the pivot axis, the other end of said arm having a threaded bore transverse to said pivot axis, and an adjustment screw threaded into said threaded bore;
each of said rocker arms being mounted on one of said studs between one of said pairs of bosses, said studs passing through said hub bores and defining pivot journals for said arms; and said adjustment screws bearing against said hoist body to position said rollers in predetermined space relation to the lower face of the track to prevent excessive tilting of the hoist trolley assembly.
References Cited by the Examiner UNITED STATES PATENTS 1,171,799 2/16 Montine v 1041 15 1,791,663 2/ 31 Edson 104-246 2,317,689 4/43 Medenwald 105-l53 2,974,609 3/61 Bent et a1. 105-153 3,017,958 1/62 Richter 188-43 3,074,354 1/63 Wakkila 105153 3,101,678 8/63 Grube 105153 MILTON BUCHLER, Primary Examiner.
LEO QUACKENBUSH, EUGENE o'. BOTZ,
Examiners.

Claims (1)

1. IN A HOIST TROLLEY ASSEMBLY FOR USE ON A TRACK COMPRISING AN UPSTANDING CENTRAL PORTION WITH A LATERAL FLANGE EXTENDING TO EACH SIDE FROM THE LOWER EDGE THEREOF: A HOIST COMPRISING A RIGID BODY; A TROLLEY COMPRISING A PAIR OF SIDE PLATES RIGIDLY CONNECTED TO SAID HOIST BODY; WHEELS CARRIED BY EACH OF SAID SIDE PLATES TO RIDE ON ONE OF THE TRACK FLANGES; AN ARM PIVOTALLY MOUNTED ON SAID ASSEMBLY, HAVING A BEARING MEMBER IN POSITION TO ENGAGE THE LOWER FACE OF THE TRACK;
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056064A (en) * 1974-03-09 1977-11-01 Landis Lund, Limited Transversely removable gantry loader
US5419260A (en) * 1993-12-15 1995-05-30 Hamilton; James Self-propelled overhead track-mounted moving system
US20040178160A1 (en) * 2003-03-10 2004-09-16 Hsueh-Chuan Tu Crane assembly
US20050092201A1 (en) * 2003-09-26 2005-05-05 Klaus-Jurgen Winter Crane trolley with low overall height
US8453802B1 (en) * 2008-07-14 2013-06-04 The United States Of America As Represented By The Secretary Of The Navy Cam actuated brake mechanism for adjustable beam trolley
CN108996393A (en) * 2018-09-10 2018-12-14 中国电子科技集团公司第三十八研究所 A kind of walking mechanism of aerial shuttle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1171799A (en) * 1915-07-10 1916-02-15 Joseph F Montine Collection and delivery apparatus.
US1791663A (en) * 1928-04-11 1931-02-10 Elmer R Edson Safety railway truck
US2317689A (en) * 1941-04-21 1943-04-27 Earl B Spencer Underdrive for traveling cranes, monorails, and the like
US2974609A (en) * 1958-09-22 1961-03-14 Gardner Denver Co Beam mounted tractor
US3017958A (en) * 1958-12-11 1962-01-23 Manning Maxwell & Moore Inc Track clamp for hoists
US3074354A (en) * 1958-05-28 1963-01-22 Cleveland Crane Eng Overhead material handling trolleys
US3101678A (en) * 1957-03-13 1963-08-27 Grube Wilhelm Suspension railway

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1171799A (en) * 1915-07-10 1916-02-15 Joseph F Montine Collection and delivery apparatus.
US1791663A (en) * 1928-04-11 1931-02-10 Elmer R Edson Safety railway truck
US2317689A (en) * 1941-04-21 1943-04-27 Earl B Spencer Underdrive for traveling cranes, monorails, and the like
US3101678A (en) * 1957-03-13 1963-08-27 Grube Wilhelm Suspension railway
US3074354A (en) * 1958-05-28 1963-01-22 Cleveland Crane Eng Overhead material handling trolleys
US2974609A (en) * 1958-09-22 1961-03-14 Gardner Denver Co Beam mounted tractor
US3017958A (en) * 1958-12-11 1962-01-23 Manning Maxwell & Moore Inc Track clamp for hoists

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056064A (en) * 1974-03-09 1977-11-01 Landis Lund, Limited Transversely removable gantry loader
US5419260A (en) * 1993-12-15 1995-05-30 Hamilton; James Self-propelled overhead track-mounted moving system
US20040178160A1 (en) * 2003-03-10 2004-09-16 Hsueh-Chuan Tu Crane assembly
US6840393B2 (en) * 2003-03-10 2005-01-11 Hsueh-Chuan Tu Crane assembly
US20050092201A1 (en) * 2003-09-26 2005-05-05 Klaus-Jurgen Winter Crane trolley with low overall height
DE10345102B4 (en) * 2003-09-26 2005-09-29 Demag Cranes & Components Gmbh Trolley, in particular monorail cat with low height
EP1518817A3 (en) * 2003-09-26 2006-03-29 Demag Cranes & Components GmbH Trolley, in particular monorail trolley with reduced height
US7234400B2 (en) * 2003-09-26 2007-06-26 Demag Cranes & Components Gmbh Crane trolley with low overall height
CN100351165C (en) * 2003-09-26 2007-11-28 德马格起重机及部件有限公司 Trolley, in particular monorail trolley with reduced height
US8453802B1 (en) * 2008-07-14 2013-06-04 The United States Of America As Represented By The Secretary Of The Navy Cam actuated brake mechanism for adjustable beam trolley
CN108996393A (en) * 2018-09-10 2018-12-14 中国电子科技集团公司第三十八研究所 A kind of walking mechanism of aerial shuttle

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