US2443306A

US2443306A - Derrick

Info

Publication number: US2443306A
Application number: US605559A
Authority: US
Inventors: Cuir Talford S De
Original assignee: Lummus Co
Current assignee: CB&I Technology Inc
Priority date: 1945-07-17
Filing date: 1945-07-17
Publication date: 1948-06-15
Anticipated expiration: 1965-06-15

Description

T. 5. DE CUIR June 15, 1948.

- DERRICK 5 Sheets-Sheet 1 Filed July 17 1945 77 74 a .INVENTOR. Z? Jalfard 6105M! ATTORNEY T. 5. DE CUIR June 15, 1948.

DERRICK 5 Sheets-Sheet 2 Filed July 1"7i 1945 INVENTOR. Y'alfrd mama- ATTORNEY June 15, 1948. "r. 5. DE C UlR DERRICK 5 Sheets-Sheet 3 Filed July 17 1945 ATTORNEY T. 5. DE CUlR June 1 5, 1948.

DERRICK 5 Sheets-Sheet 4 Filed July 17, 1945 1 IN VEN TOR. Talfard .Sifiezar ATTORNEY T. 5. DE CUIR June 15, 1948.

DERRICK Filed July 17, 1945 MN QM 2 .4 ILHJPHIFQ... a 1 a. N. 5? %Enhll i ml (ATTORNEY Patented June 15, 1948 DERRICK Talford S. De Cuir, Whiting, Ind., assignor to The Luminous Company. New York, N. Y., a corporation of Delaware Application July 17, 1945, Serial No. 605,559

9 Claims. 1

This invention relates to derricks and, in particular, to the provision of a new and improved derrick possessed of great versatility and efficiency, and capable of handling large, heavy, bulky objects and equipment, requiring elevation of the point from which the load line is sup porteda substantial distance above the end of the derrick mast.

It is a further object of this invention to provide such a derrick structure embodying, in addition to a conventional mast and main boom, an auxiliary boom or high boom, (preferably provided with an extension boom or jib boom projecting therefrom) which may be elevated to high angle positions whereby the load line is supported from points substantially above the upper end of the derrick mast.

It is a further object of this invention to pro vide such a derrick structure embodying means for detachably connecting the upper end portion of the conventional main boom rigidly to the mast in such manner that the mast is substantially stiifened or strengthened, making possible operation of the high boom or auxiliary boom to handle objects which are too heavy to be handled by such a high boom when the mast is not so reinforced and which objects are of such length or height as to require that the load line be supported from points beyond the upper end of the mast.

v to

It is a further object of this invention to provide such a structure wherein the jib boom or extension boom may be adjusted to extend downwardly at an acute angle from the outer end of the high boom in such manner as to engage the lower end portion of the mast when the high boom is lowered thus offsetting the outer end of the high boom from the mast in the lowered position of the high boom wherein it does not obstruct or interfere with operation of the main boom and by means of which offsetting of the outer end of the high boom, at rest is off dead center. I

It is a further object of this invention to provide such a derrick structure wherein means is also provided for predeterminedly maintaining the upper block of the high boom topping lift spaced from the axis of the mast at such distance and in such manner as to provide sufficient leverage for operation of the topping lift to ele rate the high boom from its lowermost. at rest,

or inoperative position without placing undue orunusual strain on the high boom topping lift or the high boom lift line.

It is a further object of this invention to pro- '-vide such a derrick structure embodying means i for predeterminedly limiting the uppermost position of the high boom whereby to prevent it from going over backward or swinging past dead center toward the derrick mast, i. e., beyond a vertical plane passing through the hinge or axis thereof.

It is a further object of this invention to provide such structure wherein the jib boom is hingedly attached to the outer end of the high boom in such manner that it may be adjusted angularly with respect thereto.

These and other objects and advantages will appear from the following description taken with the drawing.

In the drawing:

Fig. 1 is a view in elevation, and partly diagrammatic, of an illustrative derrick embodying the principles of this invention with the main boom in operation and the high boom or auxiliary boom in its lowermost, inoperative, position;

Fig. 2 is a similar view of the derrick of Fig. 1, partially broken away, but showing the high boom or auxiliary boom in operation, and with the main boom connected to the derrick mast to provide for strengthening thereof, the high boom or auxiliary boom being shown in substantially horizontal position; I

Fig. 3 is a view similar toFigs. 1 and 2, of the upper end of the derrick, but showing the. extreme uppermost or high angle position of the high boom or auxiliary boom, with a position intermediate the positions of Figs. 2 and 3 indicated therein in dash lines;

Fig. 4 is an enlarged detail view of the upper end of the derrick, with the parts substantially in the position shown in Fig. 2;

Fig. 5 is a fragmentary top plan structure shown in Fig. 4;

Fig. 6 is a view similar to Fig. 4, but showing the parts substantially in the position shown in full lines in Fig. 3, and with the boom stop in its operative position wherein it limits the uppermost or highest position of the high boom;

Fig. 7 is a fragmentary view of the boom block stop, and boom stop, in the position shown in Fig. 6 with the high boomomitted in the interest of clear disclosure; and

Fig. 8 is an enlarged fragmentary detail plan view of the outer end of the high boom and the connected jib boom, with the latter partly broken away.

As shown in Figsal, 2, and 3, the mast l is of conventional form, being pivoted to or swing-ably mounted in conventional manner On the base 2 and the conventional main boom 3 being hinged -to the mast 1 adjacent its lower end in convenview of the tional manner at the point 4. Conventional means such as the bull wheel 5, operatively connected with a reversable swing engine 5, is provided for swinging the upright mast l about its vertical axis. At it upper end, the mast I is provided with a pivotally attached spider 1 to which are 'secureda plurality of guys Bfor maintaining the upper end'of the mast I in position.

While the above described structure is conventional, and the outer end of the main boom 3 is connected through the main boom topping lift (generally designated ID) in conventional manner to the upper end of the mast i, the pivot for links 52 of the upper'block' ofthe topping lift iii is provided by a pin M secured in the head block i5 as shown in Figs. 5 and 6, and as here.- inafter more fully explained. The links 16 of of the lower block of the topping lift ID are securedin conventional manner to the outer end of the main boom 3.

While the mast land main boom 3, as well as the high boom or auxiliary boom (hereinafter described) are shown diagrammatically in Figs. 1, 2, and 3, the details thereof are shown in Figs. 4, 5, and 6. As herein shown, the mast 8 comprises four similar angles I8 connected by convention-al trusswork to form a hollow column terminating at its upper end in a headed pin it upon which the above'described spider 'i is rotatably supported. The head block l5 comprises a pair of similar obverse plate 2i welded or otherwise rigidlysecured each to a pair of angles l8 at opposite sides of the mast I. Each plate 20 is provided adjacent each upper corner with an aperture or bore, one pair of such apertures being aligned and havingthe above described pin 14 extending therethrough and secured therein against axial movement by suitable known means such as the cotter pins Mb (Fig. 5) or the like. The other pair of apertures or bores are aligned and provide support for the pin 2i for a purpose which will hereinafter appear. Provided at its upper end with a bore or aperture aligned with the last described bore in each plate 28, and cooperating therewith to support the pin 2!, is an angle 22 having its upper end adjacent the aforesaid aperture welded or otherwise rigidly secured to the adjacent portions-of each plate 20.

These angles 22 extend downwardly at an acute angle and in spaced relation to the adjacent upper portion of the mast, and have their lower ends welded or otherwise rigidly secured each to a high boom bearing plate 23 which is supported rigidly in outwardly spaced relation to the mast by pairs of substantially

horizontal angle members

24 and 25 connected together and to the bearing plate 23 by a pair of upwardly and outwardly inclined angle members 26.

The bearing plates 23 aresuitably apertured to support the pivot pin or hinge pin 21 which extends also. through suit-able apertures provided in the hinge block 28 at the inner end of the high boom or auxiliaryboom which is generally designated The. high boom or auxiliary boom $6 is shown diagrammatically in Figs. 1, 2, and 3, but the details thereof are shown in F gs. 4, 6, and 8. As therein shown, it is formed conventionally by foursir'nilar. angles .3! connected by trusswork to form a hollow column, the column terminating at its inner end in the above described hinge block 28, and at its outer end in a plate 32 connected between the outer ends of the upper pair of angles 3| and a pair of side plates 33 and suitable bracing.

The sheave pin 34 of the upper block of the 4 fall 35 extends through suitable bearing blocks provided between the angles 3-! at their outer ends. A hinge pin 36 also extends through the side plates 33 and suitable bearings pivotally to connect the jib boom or extension boom 38 to the outer end of the high boom 30. Also pivoted about the pin 351s a pair of carrier'brackets 39 terminating at their upper ends in ears or ex tensions id provided with apertures receiving the outer ends or loops of the stays 4| which are connected at their inner ends to the hinge block 28 and which may comprise either cables, as shown in Fig. 8, ora plurality of rods Ma connected by turn buckles 4 l b by means of which the angle of brackets 39 may be varied with respect to the high boom 3! for a purpose which will hereinafter appear. s

The jib boom or extension boom 38 (Fig. 8) comprises a, pair of channels 42 bent inwardly at their outer'ends and secured: together by plates 43 and being apertured at their outer ends to support the pin or pintle 44 which supports the pulley 45. E achof the channels 42 is rigidly connected to an ear of a bracket 39 by means of one of a pair of similar angles or stays 46,

each having its outer end welded or otherwise rigidly secured tonne of the channels 42,-an-d its inner end welded or otherwise rigidly secured to an ear ill, as showninFig. 8. Thus, theangle between the brackets 39 (and cars 40 thereof): and the jib boom or auxiliary boom 38, is:always maintained constant by the rigid connecting stays MS.

Since the length of the stays 4! may be adjusted, if desired, as pointed out above, by means of the tur buckles 41b and the useof rods Ma of varying length-(Fig. 4), the angle between the brackets 39 and the high boom-30 may be adjusted, if desired, to vary the angularity of the jib boom or auxiliary boom '38 with respect to the high boom30.

Each side plate 33 cooperates with a similar parallel plate 33a secured to the inner sides of one pair of the angles 3| to form, by means of aligned apertures extending through them, a seat for a pair of similar pins 58, each of which supports an end of an equalizer cable 49 which passes about a sheave or pulley 50 supported by the outer block 5| of the high boom topping lift 52. The inner block 53 of the aforesaid topping lift 52 is pivotally secured to a bifurcated bracket 54 hingedlysupported at its inner end by the above described pin 2| extending through the supporting aperturesprovided in'the members 22 and plates 20.

The means for pivotally securing the inner block ditto the bifurcated bracket 54 comprises the extension pin 55 which in addition to forming a support for the sheaves of the: upper block 53 of the topping lift 52, extends outwardly on both sides a substantial distance and terminates in enlarged heads 55a. to form extensions cooperating with the hereinafter described boom members 55 is provided with a recess 58 which, in the outward position of the members 56 (shown in Fig. 4)., are adapted to engage the ends of the extension pin 55 to limit downward movement of the bracket 54, as shown in Fig. 1. Anidler pulley 59, supported on the pintle or axle 60 adjacent the outer end of the boom block stop formed by the members 55, is adapted to engage the boom line or lift line 16 which extends to the six sheave hinged tandem block of the topping lift 52 in the position shown in Fig. 1. Extending outwardly from each of the members 56 is a pair of rollers 6| which have anti-friction engagement with the members 51 forming the auxiliary boom stop.

By means of this high boom stop, when the auxiliary boom 30 is raised to the position shown in Fig. 3, the members 51 which have their movement confined each by one pair of rollers 6|, define the uppermost position of the auxiliary boom 30 and prevent it from falling over backwards or traveling beyond dead center toward the mast l in the high lift positions thereof.

When the auxiliary boom 30 is lowered toward, or to, the position shown in Fig. 1, the boom block stop formed by the members 56 and axle 60, by engagement of the recesses 58 with the ends of the extension pin 55, limit downward movement of the bracket 54 effectively to maintain the upper block of the top lift 52 spaced from the mast l, as shown in Fig. 1.

In order to strengthen the mast l for operation of the auxiliary boom 30- in high angle positions as shown in Fig. 3 wherein the auxiliary or high boom. portion of the derrick operates as a stiff leg derrick, a strongback or strut 52 is provided which comprises a braced structure somewhat similar in construction to the booms 3 and 30. but which strongback or strut is of triangular shape in elevation, being permanently pivoted on a pin 63 to the above described horizontal angle member 25, and being adapted to have the adjacent inner apex secured rigidly to the above described horizontal angle 24 by means of a removable pin 64 provided with a cotter or key 65. At its outer apex, the strut or strong back 52 is provided with apertures receiving removable pin 65 provided with a cotter or key 61, which pin 65 is adapted to be removably secured in an aperture provided in a bracket 58 on the main boom 3, as shown in Fig. 4.

When the main boom 3 is in operation, as shown in Fig. l, the pin 64 is removed from the apertures in the plates 24, and the strongback or strut 52 swings downwardly about the pivot or pin 53 to the position shown in Fig. 1, wherein it does not obstruct free movement of the main boom 3. During such operation, the auxiliary boom :38 is in its lowermost position, and the boom block stop 56, Eliis operative to offset the upper block of the topping lift 52 from the mast R. However, when it is desired to operate the high boom or auxiliary boom 30, especially for high angle lifting, the 'strongback or strut 62 is placed in the position shown in Figs. 2, 3, 4 and 6, the pin 54 being inserted and secured by the cotter or key 65, whereupon by means of the topping lift 10, the main boom 3 is pulled up into position for the insertion of pin 65 to lock the main boom 3,

the strongback or strut 52, and the mast I, into a triangular structure. Alternatively. when a single quick high angle lifting operation is performed, the pin 55 may be left out, and the main boom raised to the position shown in Fig. 4 by the topping lift l0, whereupon rigid substantially a substantial amount of strengthening of the mast l is secured.

As shown in Figs. 1 and 2, the main boom 3 is provided adjacent its inner or lower end with an apertured bracket 69 which is adapted to receive the hook 10 on the lower block of the fall H, to which fall the main boom load line 12 extends, the aforesaid load line I2 passing over the pulley 13 on the mast l to the drum or nigger-head 14 on the hoist engine. Thus, in order to keep the lower block of the fall H from becoming an obstruction in operation of the high boom 30 of the derrick, the hook 10 may be inserted in the aperture of the bracket 69 to maintain the lower block close to the lower end of the main boom 3, as shown in Fig. 2.

Extending from the high boom fall .35 is the high boom load line 15 which extends over a pulley on the mast, and down through the mast I to the nigger-head or drum 14 to which it is connected when the main boom 3 is inoperative, as shown in Fig. 2, whereupon the main boom load line I2 is coiled upon the bull wheel 5, as shown in Fig. 2. When the main boom 3 is to be operated, as shown in Fig. 1, the high boom load line 15 is coiled upon the bull wheel, as shown in Fig. 1.

The high boom lift line is designated 16 and extends from the high boom topping lift 52 over suitable pulleys down through the mast I, and thence to a nigger-head or drum 11 on the hoist engine which is diagrammatically shown in Fig. 2. The main boom lift line is designated 18 and extends over suitable pulleys and thence down through the mast I to the nigger-head or drum 19 of the hoist engine. While various suitably located pulleys are shown for avoiding friction between the

load lines

12 and 15 and the boom lines or

lift lines

16 and 18, and the mechanical parts of the derrick, these are not described since they do not constitute, per se, a part of this invention.

It is, of course, to be understood that the above description is merely illustrative and in nowise limiting, and that I desire to comprehend within my invention such modifications as are comprehended within the scope of the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In combination with a derrick including an upright mast, a main boom pivotally connected thereto adjacent its lower end, and means for elevating and lowering said boom: an auxiliary boom pivotally connected to said mast at a high point relatively to the pivotal connection between the main boom and the mast and at the opposite side of the mast from the main boom, means for raising and lowering said auxiliary boom independently of the rasing and lowering of said main boom, and means detachably connectiblc between said mast and said main boom and constructed to form together with the main boom 2. structure for bracing said mast for high angle operation of said auxiliary boom.

2. In combination with a derrick including an upright pivotally supported mast, a main boom hinged thereto adjacent its lower end, and means for raising and lowering said boom; an auxiliary boom hinged on said mast adjacent the upper end of said mast at the side thereof opposite said main boom, means'for raising and lowering said auxiliary boom independently of said main boom and means cooperating with said main boom for bracing said mast for high angle operation of said auxiliary boom comprising a linkage de- 7 tachably' connectibl'e between said mast and the upper end of said main boom for forming together with the mast and the main boom a rigid triangular upright structure supporting said auxiliary' boom.

3, In a derrick, an'uprightv mast, a main boom hinged to said mast adjacent its lower end, means for elevating and lowering said boom, an auxiliary boom pivotally connected to said mast adjacent the upper end of said 'mast at the side thereof opposite said main boom, means for raising and lowering said auxiliary boom independently of said main boom andmeans cooperating with said main boom for bracing said mast for high angle operation of said auxiliary boom comprising a linkage detachably connectible betweensaid mast and the upper end of said main boom at a high angle elevation of the latter for forming together with the main boom and the mast a rigid tri angular upright structure supporting said auxil iaryboom.

4. In a derrick, a mast constantly supported upright, a main boom pivotally secured thereto at one side adjacent the lower end thereof, means for raising andlowering said main boom, means for detachably connecting the upper end portion of said main boom in an el'evated'position of the latter to saidmast and constructed to form together with the mast and the main boom a rigid inverted triangular structure, an auxiliary boom pivotallyattached: to said mast at its opposite side adjacent its. upper end, means for raising and lowering said auxiliary boom independently of said main boom,- and means for limiting the upward angular movement of said auxiliary boom with respect to said mas-t for preventing it from passing dead center.

5. In a derrick'including an upright mast, a main boom hinged thereto adjacent its lower end and means for elevating and lowering said main boom; an auxiliary boom pivotally connected to said mast adjacent the upper end of said mast at the side thereof opposite said main boom, means for raising and lowering said auxiliary boom independently of said main boom comprising a topping lift including a pair of blocks one of which is connected swingably in spaced relation to said mast, means cooperating with said last named block in the inoperative position of the auxiliary boom to maintain said block spaced from the plane of said auxiliary boom to provide purchase for further operation of said auxiliary boom, and means detachably connectible between and cooperable with said mast and said main boom for bracing said mast for high angle operation of said auxiliary boom.

6. In a derrick including a mast constantly supported upright, a main boom hinged thereto adjacent its lower end and means for elevating and lowering said boom an auxiliary boom pivotally connected to said mast adjacent the upper end of said mast at the side thereof opposite said main boom, means for raisingand'lowering said auxiliary boom independently of said main boom comprising a topping lift including a pair of blocks one of which'is connected swingably in spaced relation to said mast, means cooperating with said last named block in the inoperative position of the auxiliary boom to maintain said block spaced from the plane of said auxiliary boom to provide purchase for further operation of said auxiliary boom-means comprising a boom stopfor limiting the high angle position of: said auxiliary boom and preventin it from travellin beyond dead center, and means; connectible be tween and cooperable with said mast and said main boom when inoperative for bracing said mast for high angle operation of said auxiliary boom.

7'. In a derrick, an upright 'mast, a main boom hingedly connected to said mast adjacent the between a pendent inoperative position endanoutwardly extending operative position and detachably conneotibl'e at its. outer end with the main boom in an elevated position of the latter to form, together with the main boom and-the mast, a rigid triangular upright structure sup-. porting the auxiliary boom.

8. In a derrick, a mast constantly supported upright, a high boom pivotally connected to said mast at a high point of the latter, means for'raising and lowering said boom comprising a. toppingl-ift including a pair of blocks one of which is, com nected swingably in spaced relation to the mast, a strut pivotally connected to the mastand en! gageable with the last-named block theinoperative position of said boom to maintain said block spaced from the plane of said boom. to provide a purchase for further operation of the boom, a strut pivotally connected to the mast at a point above the pivotal connection of the first-moms tionedstrut and engageable with said boom to limit the high angle position thereof and prevent it from passing dead center, and means borne by one of said struts and engaging the other strut to support both struts in operative position and permit limit-ed relativemovement therebetween.

9. In a derrick, an uprightmast supported for turning on an upright axis, a main boom pivotally secured to said mast at one side of the mast at a relatively low point of the latter, ,means' for raising and lowering said boom, means for detachably connecting the outer end portionof' said main, boom to the mast, said connecting means being constructed to form, together with said mast and main boom, a rigid triangularstrucrture, an auxiliary boom pivotally attached to said mast at a high point relatively to the pivotal con-- nection between the main boom andthe mast and at the opposite side of the mast from the main boom and means for raising and lowering said auxiliary boom independently of the raising and lowering ofsaid main boom.

TALFORD S. DE' CUIR.

REFERENCES. CITED.

UNITED; STATES, PATENTS,

Number Name I Date 69,375 VanVoorhis 0ct..I, 1867 315,109 Ball- Apr. 7, 1885 1,411,295 Nielsen Apr. 4, 1922 1,920,370 Forsythe et a1. Aug. 1, 1933 1,923,780 Faure et a1. -A11g'.22, 1933 2,031,549 Ruff Feb. 18, 1936 2,378,254 Swaney June 12, 1945 2,397,271 Ladw-ig Mar. 26,1946 2.,1l t5 9