US2366574A - Bridge crane - Google Patents

Description

Jan. 2, 1945; E. w. TAYLOR 2,366,574

BRIDGE CRANE Filed Sept. 10, 1943 4 Sheets-Sheet l IN V EN TOR.

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Jan. 2, 1945. E. w. TAYLOR 2,

BRIDGE CRANE Filed Sept. 10, 1945 4 Sheets-Sheet 2 war m M J arne Jan. 2, 1945. WITAYLOR 2,366,574

BRIDGE CRANE Filed Sept. 10, 1945 4 Shets-Sheet s I INVENTOR. 3

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Jan. 2, 1945. V V E. w. TAYLOR 2,366,574

BRIDGE CRANE Filed Sept. 10, 1943 4 Sheets-Sheet 4 INVENTOR.

Patented Jan. 2, 1945 j IUNITEDSTATE s, PATENT OFFICE remen CRANE :Ernest W. l'laylor, Bay City, Mich, assignor to v Industrial Brownhoist Corporation, Bay City, M

; Application September 10, 1943, Serial No. 501,879 r items.

One of the prime objects of the invention is to design a crane comprising a structural bridge having an adjustable boom hingedly secured thereto, said boom when in lowered position,

forming a horizontal extension ofthe bridge so that the bridge andboom canbe utilized as a track, with a trolley and grab bucket arrangement operable thereon for transferring coal,ore,

and similar fragmentary materialsinto or out of a boat, railroad car, or other receptacle; said boom beingrquickly and easily swungup so that it canbe used as a conventional crane boomfor handling a magnet, lor general cargo, such as machinery, steel, and similar materials and items.

Another object is to design a mobile handling structure on which the crane is mounted includshowing the machine" using a grab buck et for handling friable materials, the broken lines showing the boom raised for use as a boom crane with the grab bucketstowed in the material bin, and in another position the bucket is shown at one end of the bridge track.

Fig. 2 is a fragmentary top plan view. r

Fig. 3 is a fragmentary side elevationalview illustrating the equalizing tracks, the boom etc. being omitted. r

Fig. 4 is a diagrammatic view of the rope sys tem used when boom is raised and the machine used for handling general cargo. N

Fig." 5 is also a diagrammatic view illustrating theclosing rope system when the machine is used for handling bulk cargo. Fig. 6 is a similar view illustrating the shell ropes.

ig. '7 is a diagrammatic view illustrating the trolley travel ropes. Fig. 8 is afragmentary plan View of the boom and trolley, parts being brokenaway to more clearly show the arrangement. V Fig: 9 is a transversesectional view through the boom and trolley taken on the line 9-9 of Fig. 8. i i

The. present invention is of the same general character shown in Patent Nd-2,226,361 granted mg bins into which the unloaded material is dumped preparatory to transfer to the transfe cars spotted in position to receive it; M

A further object still is to design a machine having transfer bins for transfer of bulk materials tocars which bins are of a size and shape to supportthe grab bucket when the machine is used as a conventional crane for loadingor unloading general cargo. i With the above and other objects in view, the present invention consists in the combination and arrangement of ;parts,hereinafter more fully described, illustrated inthe accompanying draw: ings, and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion, and minor details of construction, without departing from the spirit, or sacrificing anyof the advantagesof the invention. r In thedrawings: r 4

Fig. 1 is an end elevational view of my bridge crane showing it mountedon a pier witha cargo December .24, 1940, and in which a full revolving superstructure is employed, in thatit can be utilized forhandlin fragmentary materials as well as general cargo.

the accompanying drawingsin which I have shownfthe preferred embodiment of my invention, the machine is showninstalled on a pier where cargo vessels may be tied, this pier being of the type handling general cargo, either coal, ore; etc. or bulk materials such as machinery, steels, crates, and other large, long, or bulky items.

The most efii'cient and practical machine for handling heavy machinery, fabricated steel and similar items is a boom type machine, because the boom can be swung over the'side of the sup-' porting base and there are no legs or structural supports to interfere with'the work as it is lifted and swung to load or unload. It is also generally recognized that the most economical and fastest type of machine forhandling bulk'carg'o is a rope systemtrolley, which utilized as a horizontally disposed extension of v the bridge which'spans the pier, the bridge and V I boom forming a track on which a conventional bucket isoperated fortransferringthe material from a vessel to bins, and thence to cars, or from cars to vessels, etc.

' with a single combination machine, with the consequent saving in initial cost, time and labor, and maintenance, it being merely necessary to attach the grab bucket to the hoisting rope or ropes 'whenever it is necessary to handle bulk materials, and to place the bucket on the bin and use a cargo hook when handling general cargo.

Referring now to the drawings in which is shown a pier P provided with spaced apart tracks ascas'm i being anchored to the opposite end of the trolley frame, this arrangement provides that rotation of the drum 38 in one direction draws the trolley towards the bridge, and in the opposite direction will draw it towards the outer end of the boom.

The hoisting unit is mounted in the housing H and includes winding drums 45 and 45, these drums being connected to motorslnot shown), as usual, a rope 41 being anchored to and wound on the drum 45, thence leading up and over a sheave 48 provided on the mast, thence down and around sheave 49 on the boom, and thence around sheave 50 provided on the trolley, thence the rope leads 12 to accommodate the wheels iiiof equalizing trucks M, which support the handlin machine C, said machine comprising a structural bridge l5, supported on legs I! and I! respectively. A

hopper I8 is mounted on and forms a part of the leg I] and this hopper is of suitablecapacity to suit the work required.

The hopper l8 can be of any desired shape,

and is equipped with a pivoted'discharge chute.

IQ, for discharging the material into transfer cars as usual, said cars operating on standard gauge railroad tracks 2|, or the materials can. be dumped into bins B or truck hoppers K at any point beneath the bridge 15, or transferred from this area to vessel or cars as desired.

The power plant and handling mechanism is mounted in a housing H provided on the bridge,

and an operators cab S is mounted on'the extension 22 so that a clear view of operations may be had, the operator being stationed therein to control the loading, dumping, and handling of the mechanism and cargo in general. 7

A mast 23 projects above the housing H, and sheaves 24 ar mounted thereon to accommodate the various ropes as will be hereinafter described, said mast being suitably braced by structural members 25 as usual.

A structural boom 26 is hin edly connected to chine is handling general cargo, this boom. is

swung up to position as indicated in broken lines in Fig. l of thedrawings, and in this position the boom is operable in exactly the same, manner as the boom on a conventional crane.

When the machine is handling coal, ore, or other fragmentary material, the boom is dis,- posed horizontally as shown in solid lines in Fig. 1, and is supported in this position by means of a boom hoist rope 28, which rope is wound on the drum 29 provided on the. housing H, said rope leading thence over the sheave 24, thence around the sheave 30 providing adjacent the outer end of the boom, and thence being dead-ended to the upper end of the mast at 32. I

A trolley T is mounted for travel on tracks 33 which form a, part of the boom and bridge respectively, the structure being suitably bracedto support a. predetermined load, said trolley com prising a frame 34 provided with. spaced apart. axles 35 and 36 respectively, and on which the track engaging wheels 31 are journaled.

A suitable racking unit controls the trolley travel, and includes a drum 38 drivingly connected to a motor (not shown), oppositely wound cables 39 and 40 are anchored to this drum 38, the cable 3.9. leading over sheave II and thence being anchored to one end of the trolley frame. The cable 40 is wound in the opposite direction. leading under idler sheave 42 towards the outer endofihe boom,thence around sheave 4.3,, and thence around the bucket sheave 5| provided on the bucket R, thence up and over the sheave 52 and thence being dead-ended at 54.

The bucket closing rope system is illustrated in Fig. 5 of the drawings, the rope 55 being wound on drum 46, thence leading down and around sheaves 5B and 51, thence over sheave 58 provided on the outer end of the boom, and thence over sheave 59, thence down and around sheaves 50 and GI, thence up and over sheave 62, and thence being dead-ended at 63 as usual. v r

' When the machine is used as a boom crane for handling, machinery, crates, steel, and heavy bulky objects, the bucket is stowed on the bin l8 and as indicated in brokenlines in Fig. 1 of the drawings, the trolley proper being secured on the bridge and is held in any approved manner.

The boom is mounted for swinging in exactly the same manner as is the boom on a conventional crane, the rope 64 being wound on the drum 65, thence leading up and over sheave. 66, thence out and over sheave 61 provided on the end of the boom, thence leadingdown and around sheave 68 to which. the, cargo hook 69 is attached in the usual manner, thence the rope leads up and is dead-ended at I0, and it will beclearly obvious that the hook can be raised or lowered by controlling the direction of the drum 65.

In practiceQwith the boom in position as shown in solid, lines in.- Fig. 1 of the drawings, the drum 38 is driven to traverse the trolley T on the trolley track and spot it over the hatch in the vessel V. The drum 45 is then. actuated to pay out the rope 41 and lower the bucket,v onto the material to be transferred, and when the bucket is loaded, the drum "Hi is actuated to windthe rope 55 and close the bucket, andthe drums 45 and 45 are again actuated to hoist the bucket to position directly beneath the boom, as illustrated in solid lines in Fig.1 of the drawings. The racking drum 38 is now actuated to pay out on the rope 39 and wind in on the rope 40 to traverse the trolley, with the bucket suspended therefrom, toward the bridge end of the machine and spot it over the receiving hopper I8, bin B, or truck hopper K as desired. The drum 45 is next released so that the rope is unwound and the bucket will open and discharge the contents into the bin, and when the chute l9 isdown, the material will flow directly to railroad cars, and if the chute is raised as indicatedin broken lines in Fig. 1, thematerial will be retained in the bin. This completes the cycle of operation which is successively repeated until the. transfer of material is accomplished.

When it is desired to use the machine for hans dlinggeneral cargo, the. bucket R is stowed on the bin ill, with the trolley T located and locked on the bridge l5. The machine is now ready for conversion to operation as. a boom crane; The hoist drum 29 is first actuated to wind the boom hoist cable 2'! andelevate. theboom to a desired angle of inclination, as generally-shown'in broken lines in Fig. 1 of the drawings, after which the auxiliary drum 65 is actuated to wind or pay out the rope 64 to raiseor lower the cargo hook so that heavy objects, crates or machinery can be tical, and substantial cargo handling machine.

What I claim is: a

1. A systemof the characterdescribed comprising a mobile carriage mounted fortravel on a pier or supporting structure,said carriage comprising abridge with a track thereon, aboo-m pivotally connected thereto and adapted in its horizontal position to serve as a track extension of the bridge track for traversing a trolley and bucket for the material being handled, and in elevated position to serve as a boom crane for handling a variety of materials, means on the bridge to accommodate the bucket when the machine is being used as a boom crane, and means for elevating said boom. l i i 2. A material handling system of the class deforming an extension of said bridge, tracks on said boom and bridge for traversinga trolley and bucket for the material, said boom when in elevated position serving as boom crane for handling a variety of materials, and means for elevating said boom. i

3. A system of the character described for handling materials of various kinds comprising, in

, rope associated with said boom for handling general'cargo. l

combination, a mobile bridge mounted for travel a on a supporting structure and provided with a trolley track thereon, a trolley, a crane mounted on said bridge, a boom pivotally connected to said bridge and adapted when in horizontal position,

to form a continuation of said trolley track, ma-

terial bins provided on the bridge, tracks and transfer cars disposed between the wheeled bridge and the edge of the pier, said cars being adapted .to receive the material from said bins, and means for travering said trolley on said tracks.

4. A system of the character described for handling material of various classifications compris ing, in combination, a mobile bridge mounted for longitudinal travel on a pier, said bridge being provided with trolley tracks thereon, a crane mounted on said bridge and including a track boom pivotally and adjustably connected to one end of the bridge,a trolley, tracks and transfer cars interposed between said bridge and the one edge of the pier, means for traversing said trolley on said bridge and boom, and an independent 5 A combination bridge crane of the class described for handling materials of various classifications comprising, in combination, a mobile scribed comprising a mobile carriage mounted for travel on a pier and including a bridge, a boom bridge provided with spaced apart supporting 1egs 'mounted for travel on a supporting structure,

tracks on said bridge, a boom hingedly connected to one end of said bridge and provided with tracks forming an extension of the bridge tracks when the boom is in horizontal position, a wheeled trolley, means for traversing said trolley on said tracks, a material receiving bin mounted on one of 1 said legs and adapted to receive the material being transferred, said, bin accommodating the bucket when the boom is raised for handling general cargo.

ERNEST W. TAYLQR.

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