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Publication numberUS3432911 A
Publication typeGrant
Publication dateMar 18, 1969
Filing dateJan 19, 1966
Priority dateFeb 4, 1965
Also published asDE1506082A1
Publication numberUS 3432911 A, US 3432911A, US-A-3432911, US3432911 A, US3432911A
InventorsRodgers Leonard John
Original AssigneeRolls Royce
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method and apparatus for installing jet engines
US 3432911 A
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Description  (OCR text may contain errors)

March 18, 1969 L. J. RODGERS 3,432,911

METHOD AND APPARATUS FOR INSTALLING JET ENGINES Filed Jan. 19, 1966 Sheet of 5 March 18, 1969 L. J. RODGERS 3,432,911

METHOD AND APPARATUS FOR INSTALLING JET ENGINES Filed Jan. 19, 1966 Sheet Of 5 March 1969 1.. J. RODGERS 3,432,911

METHOD AND APPARATUS FOR INSTALLING JET ENGINES Filed Jan. 19. 1966 Sheet 3 Of 3 United States Patent 3,432,911 METHOD AND APPARATUS FOR INSTALLING JET ENGINES Leonard John Rodgers, Derby, England, assignor to Rolls-Royce Limited, Derby, England, a British company Filed Jan. 19, 1966, Ser. No. 521,682 Claims priority, application Great Britain, Feb. 4, 1965,

4,862/ 65 US. Cl. 29464 Int. Cl. B253 3/00; B66d 1/30 13 Claims ABSTRACT OF THE DISCLOSURE The present invention relates to an engine handling method and apparatus.

According to the present invention, a method of installing an engine in a housing comprises securing curved guide means to the housing to extend downwardly therefrom, engaging at least one guide-engaging element on the engine with said guide means, hoisting the engine into the housing in a position inclined at an angle to the vertical, the engine being guided by said guide means, securing the engine within the housing in said inclined position; and finally removing the guide means from the housing.

The method preferably includes mounting hoisting means on the housing and attaching the hoisting means to a hoist-engaging member secured to the engine, said hoisting means and hoist-engaging member being removed after the engine has been secured within the housing.

The method is particularly applicable where the engine is a gas turbine jet lift engine and the housing has open upper and lower ends, the hoisting means being mounted on the upper end of the housing and the hoist-engaging member being secured to the air intake end of the engine so that the hoisting means hoists the engine through the open lower end of the housing into an installed position in which the intake end of the engine is disposed adjacent the upper, and the exhaust end of the engine adjacent the lower, end of the housing.

The guide means may guide the engine from a position beneath the housing in which the axis of the engine is substantially vertical to an installed position within the housing in which the axis of the engine is inclined to the vertical.

Thus where the housing is inclined to the vertical the guide means may comprise a curved rail extending downwardly from the side of the housing which is spaced further from the ground, the rail being secured to the interior of the housing. The hoisting means are then preferably arranged to hoist from a point above the open upper end of the housing and displaced from the axis of the housing towards the said side of the housing to which the rail is secured.

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The invention also comprises engine handling apparatus for carrying out the method set forth above, said apparatus comprising curved guide means adapted to be detachably secured to an engine housing and to extend downwardly therefrom, hoisting means mounted on the housing adapted to engage the engine and at least one guide-engaging element on the engine for engaging said guide means to guide the engine into the housing at an angle inclined to the vertical as it is hoisted by the hoisting means, a hoist-engaging member adapted to be detachably secured to the engine, said hoist-engaging member including a movable connection element, and said hoisting means including including a flexible hoisting element for attachment to said connection element, said connection element having limited freedom of movement in a substantially horizontal plane so that during operation of the apparatus the point of application of the housing force to the engine changes to accommodate changes in orientation of the engine.

Preferably the or each guide-engaging element is adapted to be detachably secured to the engine.

The invention will be described, by way of example only, with reference to the accompanying drawings, in which FIGURES 1, 2 and 3 show stages in the installation of a gas turbine jet lift engine in an aircraft pod, FIGURE 3 incorporating a modification of the apparatus shown in FIGURES 1 and 2.

Referring first to FIGURE 1, there is shown a gas turbine jet lift engine 10 which has been transported by means of a trolley 11 to a position beneath an open lower end 12 of a pod 13 in which the engine is to be installed. The engine 10 was initially disposed on trolley 11 with its axis 14 horizontal (broken lines) and has been swung in a cradle 15 about a pivot 16 provided on the trolley 11 to the position illustrated in FIGURE 1 in which the axis 14 is vertical. The engine 10 is formed with a number of blind sockets 17 around the internal surface of its intake duct 18 and spigots 19 provided on a sling 20 are received in the sockets 17 to attach the sling 20 to the intake end of the engine 10. A suitable sling 20 is described in US. Patent No. 3,352,592 issued to Rodgers. The sling 20 has an arcuate rail 21 on its upper side on which a ring 22 is slidably retained. A hand-operated hoist 23 is adapted to be mounted by means of a tripod 24 on the upper (intake) surface of the pod 13, enabling a hoisting force to be applied to the ring 22 and thence to the engine 10 through a hook 26 provided at one end of a cable 27 or other flexible hoisting element which forms part of hoist 23.

In this example the axis 13 of the pod 13 is inclined to the vertical, and it is necessary to guide the engine 10 as it is hoisted into the pod 13 so that the axis 14 of the engine 10 coincides with the axis 13' of the pod when the engine is finally installed in the latter.

On the side of the engine 10 which will be spaced furthest from the ground when it is installed in pod 13 there is secured a detachable support 28 carrying a set of rollers 29. The support 28 is secured to a flange 30 of the engine 10 by a toggle-clamp 31 (shown diagrammatically) and to a flange 32 of the engine 10 by a peg 33 received in an aperture 34 in flange 32.

A guide rail 35, which may comprise either a single section or a number of sections bolted together in end-to-end relationship as at 36, is secured to the side of the pod 13 which is spaced furthest from the ground. The rail 35 is secured to the pod 13 by links 37 which are attached to lugs 38 provided on the internal surface of the pod 13 by removable pegs 39 received in apertures in lugs 38. The guide rail 35 extends downwardly from the pod 13, and the rollers 29 are adapted to engage the rail 35 and thus stabilise the engine horizontally while it is being hoisted into the pod 13.

When the hoist 23 is operated, the engine 10 is hoisted into the pod 13 through the open lower end 12 thereof, passing successively through the stages shown in FIG- URES 2 and 3.

Since, in this example, the tilt of axis 14 changes as the engine is raised towards the pod 13, the line of action of the lifting force applied to the engine 10 by the hoist 23 varies accordingly, so that said line of action at all times passes through the centre of gravity 40 of the engine 10. To enable the cable 27 to take up a position along this line while progressively accommodating the changing attitude of the engine 10 as the latter is hoisted, the rail 21 is arcuate in shape, the centre of the arcuate rail 21 being a point (not indicated) on the axis 14 which is at or above the centre of gravity 40, the ring 22 sliding on the rail 21 to permit the line of action of the hoisting cable 27 to vary appropriately. Preferably, the ring 22 and rail 21 are formed of low friction material at least on their inter-engaging surfaces or the ring 22 may be replaced by suitable rollers (not shown) and the rail 21 adapted for these rollers to roll thereon.

When the engine 10 has reached the installed position shown in FIGURE 3, it is secured in the pod 13 by trunnions (not shown) or other suitable means. The tripod 24 and hoist 23 are then removed, the hook 26 being detached from ring 22. The spigots 19 are released from the sockets 17 so that the sling 20 can be detached from the engine 10. The pegs 39 are also removed, thus freeing the guide rail 35, and the toggle-clamp 31 and peg 33 released from the respective engine flanges 30, 32 to free the rollers 29 and their support 28, leaving the engine 10 supported in the pod 13 by said trunnions or other suitable means.

To remove the engine 10 from the pod 13, the reverse procedure to the above is followed, in the sequence of FIGURES 3, 2 and 1. It is to be noted that no specialized tools are necessary in using the equipment according to the invention, nor have the engine 10 or pod 13 any additional fixtures which might increase the weight thereof.

In FIGURE 3, a modified arrangement for securing the guide rail 35 to the lugs 38 of pod 13 is shown diagrammatically. The rail 35 is supported by pivoted links 41 which are connected by removable pegs 39 to the lugs 38. A screw jack 42 or like device is attached to one or both of the links 41 to enable a limited adjustment of the position of the engine 10 within pod 13 to be made to compensate for misalignment of the trunnions or other means on the pod 13 with respect to the engine 10 when the latter is installed in the pod 13.

In a modification (not shown) of the embodiments illustrated, the rail 21 of hoist 23 may be replaced by two intersecting rails and the ring 22 by sliding or rolling elements which co-operate with one of the rails. The sliding or rolling elements would be arranged in use to cooperate with whichever of the rails is selected to coincide as nearly as possible with the line of greatest slope of the axis 14 of the engine 10 when the latter is installed in the pod 13.

I claim:

1. A method of installing an engine in a housing, said method comprising the steps of: securing curved guide means to the housing to extend downwardly therefrom; engaging at least one guide-engaging element on the engine with said curved guide means; hoisting the engine into the housing in a position inclined at an angle to the vertical, the engine being guided by said guide means; securing the engine within the housing in said inclined position; and removing the guide means from the housing.

2. A method as claimed in claim 1 in which the said at least one guide-engaging element is detachably secured to the engine and removed therefrom after the engine has been installed in the housing.

3. A method as claimed in claim 1 including mounting hoisting means on the housing and attaching the hoisting means to a hoist-engaging member secured to the engine, said hoisting means and hoist-engaging member being removed after the engine has been secured within the housing.

4. A method as claimed in claim 3 in which the engine is a gas turbine jet lift engine having air intake and exhaust ends and the housing has open upper and lower ends, the hoisting means being mounted on the upper end of the housing and the hoist-engaging member being secured to the air intake end of the engine so that the hoisting means hoists the engine through the open lower end of the housing into an installed position in which the intake end of the engine is disposed adjacent the upper, and the exhaust end of the engine adjacent the lower, end of the housing.

5. A method as claimed in claim 4 in which the guide means guides the engine from a position beneath the housing in which the axis of the engine is substantially vertical to an installed position within the housing in which the engine is in said inclined position with its axis inclined to the vertical.

6. A method as claimed in claim 5 in which the guide means comprise a rail extending downwardly from the side of the housing which is spaced further from the ground, the rail being secured to the interior of the housing.

7. A method as claimed in claim 6 in which the hoisting means are arranged to hoist from a point above the open upper end of the housing and displaced from the axis of the housing towards the said side of the housing to which the rail is secured.

8. Engine handling apparatus for installing an engine in a housing, said apparatus comprising curved guide means adapted to be detachably secured to the engine housing and to extend downwardly therefrom, hoisting means mounted on the housing adapted to engage the engine, at least one guide-engaging element on the engine for engaging said guide means to guide the engine into the housing, at an angle inclined to the vertical as it is hoisted by the hoisting means, a hoist-engaging member adapted to be detachably secured to the engine, said hoist-engaging member including a movable connection element, and said hoisting means including aflexible hoisting element for attachment to said connection element, said connection element having limited freedom of movement in a substantially horizontal plane so that during operation of the apparatus the point of application of the hoisting force to the engine changes to accommodate changes in orientation of the engine.

9. Apparatus as claimed in claim 8 wherein said at least one guide-engaging element comprises a rolling element which is adapted to engage with and ride on the guide means.

10. Apparatus as claimed in claim 8 wherein the said guide means comprise a rail formed in at least two sections joined detachably together in end-to-end relation.

11. Apparatus as claimed in claim 8 wherein said movable connection element comprises a ring engageable by said flexible element, and said hoist-engaging member is provided with an arcuate rail on which the ring is movable, the centre of said arcuate rail lying on the axis of the engine at or above the centre of gravity thereof.

12. Apparatus as claimed in claim 8 in which the hoist-engaging member is provided with a plurality of spigots which may be engaged in corresponding sockets provided in the intake wall of the engine.

13. Apparatus as claimed in claim 8 in which removable links are provided for securing the guide means to the interior of the housing, and means for adjusting at least one of said links is also provided, whereby the posi- 5 6 tion of the engine may be adjusted when the latter is in 2,901,218 8/1959 Scott 254-150 its installed position. 3,061,119 10/1962 Schlepitzka 21416.1 3,211,299 10/1965 Metzrath 214-1 References Cited UNITED STATES PATENTS 5 CHARLIE T. MOON, Primary Examiner. 602,502 4/1898 Foster 21416 691,714 1/1902 Church 214-16 X US 2,768,432 10/ 1956 Hines 29-464 X

Patent Citations
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US2768432 *Feb 15, 1951Oct 30, 1956Chicago Bridge & Iron CoMethod for erecting roofs of tanks
US2901218 *Jun 26, 1957Aug 25, 1959Archie ScottTransmission lift
US3061119 *Jan 27, 1960Oct 30, 1962Anton SchlepitzkaParking device
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3643320 *May 15, 1970Feb 22, 1972Chrysler CorpMethod of mounting an automobile engine
US3694895 *Jun 9, 1971Oct 3, 1972Chrysler CorpMethod of mounting an automobile engine
US4044442 *Dec 18, 1975Aug 30, 1977Stal-Laval Turbin AbMethod of installation of large capacity gas-turbine powered electrical generating machinery
US4056877 *Aug 25, 1975Nov 8, 1977Vent-Cair, Inc.Method of installing apparatus for extracting grease and smoke
US4117939 *Jan 2, 1975Oct 3, 1978Yuma Desert Manufacturing, Inc.Moveable building board hoist
US4141342 *Oct 20, 1977Feb 27, 1979Vent-Cair, Inc.Apparatus for extracting grease and smoke, and method and apparatus for installing the same
US4451979 *Oct 27, 1980Jun 5, 1984Elliott Turbomachinery Company, Inc.Assembly and disassembly apparatus for use with a rotary machine
US4771998 *Mar 6, 1986Sep 20, 1988Orbital Sciences Corporation IiMobile buildup apparatus for transporting, supporting and protecting space vehicle payloads
US5971702 *Jun 3, 1998Oct 26, 1999Dresser-Rand CompanyAdjustable compressor bundle insertion and removal system
US6546616 *Dec 15, 2000Apr 15, 2003Bell Helicopter Textron Inc.Six-axis alignment and installation tool
US7770292 *Jun 14, 2007Aug 10, 2010Rolls-Royce PlcEngine core stand arrangement and method of removal and transportation of an engine core
US7941905Aug 3, 2006May 17, 2011Airbus Operations LimitedMethod of removing a component from an aircraft
US20110185553 *Mar 30, 2011Aug 4, 2011Airbus Uk LimitedRemoval of components from aircraft
Classifications
U.S. Classification29/464, 29/281.1, 29/469, 414/780, 414/592
International ClassificationB64F5/00
Cooperative ClassificationB64F5/0036
European ClassificationB64F5/00C