US3135478A

US3135478A - Hoist construction

Info

Publication number: US3135478A
Application number: US120023A
Authority: US
Inventors: Donald C Hariander
Original assignee: YUBA CONS IND Inc
Current assignee: YUBA CONS IND Inc; YUBA CONSOLIDATED INDUSTRIES Inc
Priority date: 1961-06-27
Filing date: 1961-06-27
Publication date: 1964-06-02
Anticipated expiration: 1981-06-02

Description

June 2, 1964 D. c. HARLANDER 3,135,478

HOIST CONSTRUCTION Filed June 27, 1961 4 Sheets-Sheet l ZaL/r 414/" 1477' DIN! Y5 June 1954 D. c. HARLANDER HOIST CONSTRUCTION 4 Sheets-Sheet 2 Filed June 27, 1961 INVENTOR.

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ATTOENE/i June 1964 n. c. HARLANDER HOIST CONSTRUCTION 4 Sheets-Sheet 3 Filed June 27. 1961 INVENTOR. 19mm? 61 Mae/vase June 2, 1954 D. c. HARLANDER 3,135,478

HOIST CONSTRUCTION Filed June 27, 1961 4 Sheets-Sheet 4 INVENTOR Da/wuo CI them/mi! jazz r 69/ ITTOI/VEXF United States Patent Ofi ice 3,135,478 HOIST CUNSTRUCTIGN Donald C. Harlander, Orinda, Califi, assignor to Yuba Consolidated Industries, Inc. Filed iune '27, 1961, Ser. No. 126,023 8 Claims. (Cl. 242- 117) My invention relates primarily to devices for use in taking in and paying out ropes such as wire ropes in parallel and has found particular commercial application in connection with the raising and lowering of tainter gates utilized in hydro projects. In such an environment it is desirable to provide a hoist effective simultaneously to operate a plurality of lines or ropes in parallel, for example, nine parallel lines or ropes which extend to anchor points on the tainter gate itself. The hoist is actuated by power in any suitable fashion. One of the difliculties in connection with such an installation is to provide a suitable hoist construction so that the individual ropes themselves can not onlybe firmly attached to the hoist but can readily be guided in their coiling and uncoiling operation and in which the ropes and the attendant rope mechanism can readily be accessible for inspection, for changing the ropes from time to time and for other, comparable purposes.

It is therefore an object of my invention to provide a hoist construction in which the ropes are arranged in parallel for ready attachment to and detachment from the drum and in which there are suitable guide structures for governing the paying out and taking in of the ropes and in which the construction is readily and economically made and easily and quickly serviced.

Another object of the invention is to provide a hoist construction in which the parts of the hoist can readily be handled and disposed despite their size and weight.

Another object of the invention is in general to provide an improved hoist construction. 7

Other objects together with the foregoing are attained in the embodiments of the invention described in the accompanying description and illustrated in the accompanying drawings in which: 7 7

FIGURE. 1 is a cross section on a generally vertical, axial plane through one form of hoist construction pursuant to the invention, the ropes being shown in coiled condition;

FIGURE 2 is for the most part a cross section, the plane of which is indicated by the line 22 of FIGURE 1 and which also shows in diagrammatic form the position of certain parts which have been detached;

FIGURE 3 is a cross section similar to FIGURE 1 but showing a modified form of hoist construction pursuant to the invention;

FIGURE 4 is a cross section, the plane of which is indicated by the line 44 of FIGURE 3 but with the drive gear omitted; v

FIGURE 5 is a fragmentary view comparable to FIG URE 3 but showing a portion of that form of the hoist construction in partially disassembled condition; and

FIGURE 6 is an end elevation of the portion of the mechanism especially shown in FIGURE 5.

While the hoist construction pursuant to the invention can easily be embodied in a number of different ways, it has been successfully embodied in the commercial forms shown herein utilized primarily in connection with 3,135,478 Patented June 2, 1964 tainter gates. Considering first the particular embodirnent illustrated in FIGURES 1 and 2, there is provided a hoist drum 6. This is a fabricated structure including a pair of aligned journal shafts 7 and 8 both concentrically disposed in end-to-end relationship on an axis 9 of rotation and of symmetry. The journal shafts 7 and 8 are designed to be supported rotatably in a supporting structure (not shown) of standard arrangement. The journnal shafts are connected by certain intervening discs 11 and 12 and by reinforcing plates 13 and 14 to a drum shell 16 of generally cylindrical configuration. The shell is symmetrical about the axis 9 and has ap propriate shoulders for positioning the discs 11 and 12 and the plates 13 and 14, fastened in place by appropriate Welding beads.

The drum shell 16 at one end is provided with a turned portion 17 adapted to receive a driving gear 18. This gear has a hub 19 encompassing the drum shell 16 and also has a web 21 surrounded by a rim 22 on which gear teeth 23 are provided. The driving mechanism (not shown) is in engagement with the gear teeth 23 and revolvesthe gear and the drum 6 simultaneously. since there is provided a key 24 appropriately received in a notch 26 in the gear hub 19 and also received in a key way 27 formed in the drum shell 16. 5

Pursuant to the invention, the drum shell 16 is formed 'around its exterior with a plurality of adjacent grooves 31. The grooves are spaced apart a predetermined distance as established by remaining or intervening lands 32.

In addition to and partly intersecting the circumferential grooves 31, the drum is also provided with a key way 33 extending parallel to the axis 9 and constituting substantially a continuation of the key way 27. In fact, the key way. 33 and the key way 27 can be formed simultaneously and as a: continuous channel.

Designed to abut the hub 19 and to rest against the adjacent .one of the lands 32 is an end plate 36 of generally annular form for axial assembly. While the plate 36 can be made in two semi-annular segments 37 and 38 assembled by radial motions over the drum shell 16, preferably the plate 36 is in one piece seated on the portion 17. The plate 36 on its inner periphery is contoured to afford an indented notch 39 of a configuration to correspond approximately to the outline of the key 24 and while normally out of touch with the key 24, may actually be partially in engagement with such key without harm.

' Located in the key way 33 and projecting radially thereabove and farther out than the surface of the drum shell 16 are anchor blocks 41 of substantially identical configuration disposed in immediate abutment with each other. All of the blocks have similar characteristics so that a description of one applies equally to all. Each anchor block 41 includes a body of metal having a relatively flat nether surface 42, a pair of

parallel sides

43 and 44, a pair of parallel ends 46 and 47 and an arcuate top surface 48, the center of curvature of which is on the axis 9. The radial distance of the surface 48 from the adjacent'surface ofthe land 32 is substantially that of the diameter of the rope to be utilized. The block itself is provided with an approximately tangential but tapering through bore 51 in which one end of a Wire rope 52 is lodged, expanded and leaded in the usual way so that the wire rope is firmly and permanently anchored in the anchor block.

All of the anchor blocks are installed side by side within the key way 33 as shown in FIGURE 1. The end block is disposed within the notch 39 indented in the interior periphery of the end plate 37. Thus the block is partially restrained against radial withdrawal.

Comparable to the interengagement of the plate 37 with the end block 41 is the engagement of a plurality of somewhat similar but axially thicker semi-annular plates generally designated 56. Conveniently, each of these plates is made up of a pair of semicircular or

semiannular members

57 and 58 of suificient axial extent to overlie one side of one end block and as well to overlie and engage with the other side of the next adjacent anchor block. One of the plates of each pair is provided with an indented notch 66 to accommodate the subjacent block portions and the plate widths are such as to fit well into the grooves 31.

The plates 56 are drawn together against the drum shell and the anchor blocks by releasable or removable fastenings. For that reason the various plates are provided with pairs of

lugs

61 and 62, each pair being bored to receive a through bolt 63 and a securing nut 64. When the nut 64 is tightened the two semi-annular plates are drawn together and are firmly seated within the grooves 31. For use in handling, each of the plates 57 is provided with a lifting bail 67.

In the use of this mechanism, when the ropes are entirely payed out they extend in parallel relationship to each other and lie approximately tangent to the surface 32 of the drum shell 16. They are disposed with appropriate freedom between adjacent ones of the

plate members

56 and 58, the axial constraint being afforded entirely by the positioning of the various plates 56 within the drum grooves 31.

When the drive is actuated so that the gear 18 is appropriately revolved, the drum 6 likewise revolves in a direction so that the wire ropes 52 are coiled upon the drum 6. In most cases it is preferred to provide at least the latter portion of the drum surface with an inclined ramp 68 disposed in the bottom of each of the spaces between the adjacent plates and leading up to and substantially continuing the height of the arcuate surface 48 of the adjacent anchor block. Thus as the rope is wound onto the drumit is lifted to clear and ride against the arcuate surface 48 and then to wrap itself around the subjacent turn of the previously wrapped rope. In this fashion there is built up an approximate helix of a plurality of rope turns on the drum, the axial spacing being taken care of by the intervening plates. Reverse rotation of the drive gear 18 permits the ropes to pay out until such time as the rope is again substantially tangent to the anchor blocks.

In the event an individual rope or anchor block must be examined, the rope is payed out and the mechanism is stopped and suitable ones of the

fastenings

63 and 64 are removed when the parts are preferably substantially in the rotated position shown in FIGURE 2. If desired, the bottom plate 58 is lowered in the direction of the arrow 69 (sometimes by the use of an appropriate jack or cribbing). A hoist is put in engagement with the bail 67 and when actuated lifts the top half 57 of the plate 56 in the direction of the arrow 70 substantially as illustrated in FIGURE 2. This operation can be performed individually with any one of the plates 56 without disturbing any of the others or can also be performed upon any number of such plates. In any event, one or more of the anchor blocks is so exposed and when its attached rope is slack can readily be lifted radially out of the key way 33 for inspection, detachment of the rope or replacement. After a replacement anchor block is radially installed in its appropriate location Within the key way 33, the top and

bottom plates

57 and 58 are moved radially into position and the

fastenings

63 and 64 are reinstalled in the direction of the axes 59 and 60 and tightened. The mechanism is then ready for further operation. No axial block or plate movement is required.

In a somewhat similar fashion, there is provided another form of hoist construction as shown in FIGURES 3-6 inclusive. In this instance a drum shaft 71 is provided with journal ends '72 and 73 designed to be mounted for rotation in any suitable mechanism (not shown) about a rotational and symmetrical axis 74. Included in the drum construction is a drum shell 76 located by plates '77 and 78 welded in place. The surface of the drum in one area is turned to afford a cylindrical surface 79 for the reception of the hub 81 of a drive gear 82. Teeth 83 around the periphery of the gear are in engagement with a drive mechanism (not shown). The gear hub 81 abuts a flange 84 turned on the outer periphery of the drum 76 while a key way 87 extending axially of the drum receives a key 88 also lying in a notch 89 formed within the hub 81 of the gear so that the gear and the drum turn in unison.

In this form of the device there is lodged against the flange 84 a relatively thick end plate 91 which is in one piece and is annular in configuration. The plate 91 has a notch 92 extending outwardly from its inner periphery and of a contour to receive one portion of an anchor block 93. This anchor block is also provided with a flat lower surface 94, a pair of parallel sides 96 and 97 and a generally arcuate outer surface 98. On' either side of the outer surface 98 the anchor block is formed with a pair of

fiat surfaces

99 and 101, the former being designed specifically to receive the adjacent portion of the plate 91 and firmly to interengage with the notch. Similar plates 102 are successively assembled over one end of the demounted drum to engage with successive ones of the blocks 93.

The manner of assembly is first to position the end plate 91, then an adjacent block 93, then one of the plates 102. Following that another anchor block 93 is positioned and is succeeded by the positioning of its adjacent plate 102, and so on. The dimensions of the parts are such that the axial spacing is accomplished by the width of the upstanding arcuate portion 98 of the anchor blocks, which do not quite touch each other within the key way 87. As before, each of the anchor blocks has a through bore 103 in which the end of a wire rope 104 is lodged, spread and leaded for permanent anchorage.

The rope 104 extends tangentially from its anchor block but instead of resting directly on the surface of the drum, rests instead upon the outer surface of a crescent ramp 106 having a set inner radius but an increasing outer radius as it encompasses the drum so that the high terminus of the crescent ramp 106 is substantially a continuation of the arcuate surface 98 of the anchor block. Thus in one rotation the rope 104 lifts radially so that it can coil upon itself to form an approximate spiral. The rope is axially confined between the adjacent walls of the

various plates

91 and 102.

Finally the assembly is completed by an end plate 107 comparable to the plate 91 and itself a continuous annulus having an appropriate key or block notch 108 therein. The assembly is maintained against axial dislodgment by the positioning of a locking annular plate 111 abutting the inner portion of the end plate 107 and pierced to receive fastening bolts 112 engaging the drum 76. When the machine bolts 112 are tightened, the locking plate 111 is urged toward the flange 84 and the intervening parts are pressed tightly against each other, except that spacing sufiicient to allow freedom for the various ropes is afforded by the upper projecting portion of the anchor blocks and by the intervening spiral or crescent ramps 106.

With this mechanism, when it is desired to withdraw and inspect any of the ropes and anchor blocks, the machine screws 112 are withdrawn and the locking plate shifted away, preferably when the mechanism is oriented as shown in FIGURE 3. Then the two top machine bolts 112 are replaced as shown in FIGURE 6 and a special guide block 113 is installed. The guide block has substantially the end contour of the anchor blocks but in addition has a cross bar 114 with notches 116 so that the guide block mechanism can be temporarilymounted underneath the heads of the machine screws, which can then be tightened in position. Following this, the end plate 107 is axially moved in the direction of the arrow 117 (FIGURE 5) and is so guided into a spaced relationship.

The end plate can be removed entirely from the drum if the journal 73 has theretofore been freed or if it is necessary merely to inspect the rope and to withdraw individual ones of the anchor blocks that can easily be accomplished after the parts are in the position shown in FIGURE 5 by a radial withdrawal of the anchor block from the key Way 87. If other than the end anchor block is to be withdrawn, it is easy to move the adjacent plates 102 and blocks axially toward the end plate 107 in its new position and one or more of the subjacent anchor blocks are then freed on both shoulders by axial translation until they can be individually lifted out by a radial motion. The reinstallation is in the reverse order. Following reinstallation, the temporary support 113 is removed, the locking plate 111 is reinstalled with all of the fastening screws 112 and the mechanism is again ready for operation. While it is possible, as shown in the figures, to shift various parts with the lines partly or wholly wound, especially if they are temporarily clamped, it is normally preferred to unwind the lines before working on the drum.

In both forms of the hoist construction there is provided an arrangement in which a plurality of ropes disposed in parallel are firmly and positively held in position and locked in place in which the ropes are taken in and payed out between adjacent plates serving as guide ways so that the ropes are coiled in spiral form in a planar fashion and perpendicular to the axis of rotation of the hoist drum and also an arrangement in which individual ropes can easily be removed without dismantling the entire.

structure or in which the entire group of ropes can be simultaneously withdrawn and reassembled.

What is claimed is:

1. A hoist construction comprising a drum, means for supporting said drum for rotation about an axis, means in said drum defining an axially extending keyway, a drive wheel mounted on said drum, a key disposed in said keyway and engaging said drive wheel, an anchor block dis posed in said keyway adjacent said key, a first pair of coplanar semi-annular plates ecompassing said drum and in part overlying a portion of said anchor block, a second pair of coplanar semi-annular plates encompassing said drum and in part overlying another portion of said anchor block, means for detachably securing together the semiannular plates of said pairs, and a rope anchored to said anchor block and disposed around said drum between said first pair and said second pair of semi-annular plates.

2. A hoist construction comprising a drum, means defining an axially extending keyway in said drum, an anchor block abutting said drum and fitting in said keyway and having a portion extending radially from said keyway, a rope extending into and anchored in said anchor block and extending therefrom tangentially of said drum, a first plate segment in a postion abutting said drum and engaging said extending portion of said anchor block on one side of said rope, a second plate segment abutting said drum and in a position parallel to said first plate segment and engaging another extended portion of said anchor block on the other side of said rope, means interposed between said plates for holding said plates axially apart, and means engaging said drum for removably holding said plate segments in said positions.

3. A hoist construction comprising a drum, means defining an axially extending keyway in said drum, an anchor block disposed in and having a portion projecting radially from said keyway, a rope anchored in said anchor block and extending therefrom tangentially of said drum, a first plate segment in a position radially engaging one outer portion of said anchor block on one side of said rope, means in said first plate segment forming a notch interfitting with said projecting portion, a second plate segment in a position radially engaging another outer portion of said anchor block on the other side of said rope, means in said second plate segment forming a second notch interfitting with said projecting portion, means interposed between said plates for holding said plates axially apart, and means engaging said drum for removably holding said plate segments in said positions.

4. A hoist construction comprising a drum, means for supporting said drum for rotation about an axis, means forming a pair of circumferential grooves in said drum, means defining an axially extending keyway in said drum, an anchor block disposed in said keyway and having a portion projecting radially from said drum, a first semiannular plate seated in one of said grooves and overlying one portion of said anchor block, means forming a notch in said first semi-annular plate interfitting with said anchor block, a second semi-annular plate seated in the other of said grooves and overlying another portion of said anchor block, means forming a notch in said second semi-annular plate interfitting with said anchor block, and means engaging said drum for removably holding said semi-annular plates in said positions.

5. A hoist construction comprising a drum, means defining an axially extending keyway in said drum, an anchor block disposed in said keyway and having a portion projecting radially therefrom, means forming a bore in said block tangential to said drum, a first annular plate encompassing said drum and overlying one side of said anchor block, means on said first plate forming a first notch interfitting with said projecting portion, a second annular plate encompassing said drum and overlying lthe'other side of said anchor block, means on said second plate forming a second notch interfitting with said projecting portion, means for spacing said plates axially apart to lie on opposite sides of said bore, and means for holding said plates on said drum.

6. A hoist construction comprising a drum, means defining an axially extending keyway in said drum, an anchor block disposed in said keyway and having a portion projecting therefrom, a rope anchored in said anchor block and extending tangentially of said drum, a first annular plate encompassing said drum and overlying said anchor block on one side of said rope, means on said first plate forming a first notch interfitting with said projecting portion, a second annular plate encompassing said drum and overlying said anchor block on the other side of said rope, means on said second plate forming a second notch interfitting with said projecting portion, means on said anchor block interposed between said first and said second annular plates for spacing said plates apart, a shoulder on said drum, and means for urging said first annular plate and said second annular plate and said anchor block axially toward said shoulder.

7. A hoist construction comprising a drum, means forming an axial keyway in said drum, a plurality of anchor blocks arranged side by side and fitting in and projecting radially from said keyway, a plurality of guide plates encompassing said drum and having radial notches interfitting With the radially projecting portion of adjacent ones of said anchor blocks, means interposed between adjacent guide plates for spacing said guide plates a predetermined axial distance apart, and a plurality of ropes fastened in respective ones of said anchor blocks and lying in the axial spaces between successive ones of said plurality of guide plates.

8. A hoist construction comprising a drum, a plurality of side by side anchor blocks abutting the surface of said drum, a plurality of ropes each secured to one of said anchor blocks and extending therefrom in a direction tangent to said drum, a plurality of removable guide plates 1 7 encompassing said drum between the ends thereof and radially abutting adjacent ones of said anchor blocks, means for locating said guide plates on opposite sides of said ropes a distance slightly greater than the diameter of said rope, and means for holding said removable guide plates on said drum.

References Cited in the file of this patent UNITED STATES PATENTS 8 Carlson May 12, 1925 Ashmead et a1 Mar. 23, 1926 Proctor Aug. 9, 1932 Mossberg Aug. 16, 1938 Jenkins Jan. 10, 1939 Mossberg Jan. 24, 1939 Sole Aug. 27, 1940 Rovas Dec. 11, 1951 Speed et a1. July 17, 1956 FOREIGN PATENTS Great Britain Oct. 6, 1921

Claims

8. A HOIST CONSTRUCTION COMPRISING A DRUM, A PLURALITY OF SIDE BY SIDE ANCHOR BLOCKS ABUTTING THE SURFACE OF SAID DRUM, A PLURALITY OF ROPES EACH SECURED TO ONE OF SAID ANCHOR BLOCKS AND EXTENDING THEREFROM IN A DIRECTION TANGENT TO SAID DRUM, A PLURALITY OF REMOVABLE GUIDE PLATES ENCOMPASSING SAID DRUM BETWEEN THE ENDS THEREOF AND RADIALLY ABUTTING ADJACENT ONES OF SAID ANCHOR BLOCKS, MEANS FOR LOCATING SAID GUIDE PLATES ON OPPOSITE SIDES OF SAID ROPES A DISTANCE SLIGHTLY GREATER THAN THE DIAMETER OF SAID ROPE, AND MEANS FOR HOLDING SAID REMOVABLE GUIDE PLATES ON SAID DRUM.