DE1756213A1 - Anchoring device for anchoring a helicopter or the like. on a fastening part - Google Patents

Description

United Aircraft of Canada Limited, Jacques Gartier, Province of Quebec (Canada)

Anchoring device for anchoring a helicopter or the like on a fastening part

The invention relates to an anchoring device for fastening an aircraft, e.g. a helicopter, at a landing platform and concerns in particular an anchoring device for securing the tail of a helicopter to the platform »

Many attempts have been made to anchor a helicopter to a landing platform more successful attempts include those in the US patent script 3 303 807 fastening device described. However, as shown in the aforementioned TjS patent, only the front part (bow) of the helicopter fixed at one point, so that the tail of the aircraft around this point can pivot until it is anchored. This can be difficult in strong winds »

009815/1133

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ORIGINAL

The object on which the invention is based is to create a stern anchoring device which interacts with a fastening device according to the US patent 3 303 807 or the like can be operated

In addition, an attempt was made to use a relatively large anchoring device according to the invention in conjunction with a similar stern anchoring device as the main ^ to use anchoring device of the helicopter »

A construction according to the invention consists of an anchoring device for anchoring a helicopter or the like, which can be releasably locked with an anchoring part and is characterized by a tubular body extending from the aircraft and with locking claws protruding from its outer, open end in the tubular body axially movable pin which is acted upon by at least one spring w achlagt to move the locking claws in a spread-apart locking position, by locking means that retain the locking claws in their unlocked position and are adjustable so that they Release locking pawls so that the pin can spread them apart into a locking position.

In a more specific embodiment, the anchoring part mentioned in connection with the invention has a raised,

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BATH ORIGINAL

Flat deck delimiting parallel slots. The locking means according to the invention consist of an annular sleeve which is axially displaceable on the tubular body and is spring-loaded in such a way that it normally slides over the locking claws and thereby retains them in an unlocked position abuts against the webs of the Sohlitze having decks in abutment, it is contrary to the Pederbeaufsohlagung to release the lock pawls forced so that the pin axially zwiuchen slide the locking claws can _r wherein the locking jaws are moved to their locking position, d »h · spread apart, are so that they are locked under the bars of the Deoka

A preferred embodiment of the invention is in Drawing shown and described in more detail below. Show it:

Pig. 1 a Seitenanaicnt the in fuselage one in dash-dotted lines Lines indicated helicopter attached anchoring device according to the invention,

. Fig. 2 is a side view of the device according to Pig · 1 seen from a different angle,

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Pig · 3 shows an axial section through the anchoring device in the retracted position, the anchoring device interrupted for their representation in enlarged dimensions on the line A-A is,

4 shows an axial section through the anchoring device corresponding to Pig 3 in fully extended position,

Pig 5 is a partial axial section of a detail of the anchoring device showing FIG Anchoring skis outside in unlocked position,

Pig 6 shows a bottom view of the device according to pig. 5 _t

Pig · 7 shows an axial section of a detail of the device according to Pig · 5 »but in the locked position with anchoring paws spread apart, and

Pig 8 a view from below of the device according to Pig 7.

1 and 2, the anchoring device according to the invention is normally arranged in the rear part of the fuselage of the helicopter denoted by 10 in FIGS. 1 and 2. The fuselage 10 includes a floor M, a wheel 11 and the anchoring device 14 'which has a suspension frame 16 and is attached to the bottom 12.

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BATH ORIGINAL

As shown in Figures 1 and 2, there is one part of the anchoring device also attached to the lower helicopter wall 18

As discussed above, the anchoring device is provided to secure the helicopter 10 to the Deck 20 to be attached »In the present case, the deck has a decking 22, on which slots 26 delimiting There are webs 24

The suspension frame 16 of the anchoring device 14 according to Figures 1 to 4 has a lower mounting plate 30 and tubular supports 32 extending from the support plate 30 extend upward and hold a pulley box 34. To the mounting plate 30 is an in Flanged bushing 36 attached to its center. This bushing 36 is one which runs through the mounting plate 30 and an opening formed in the base 12 is associated with it. A fixed, elongated outer jacket 38 extends down through the floor 12 and through the lower wall 18 through, to which it is attached · The outer jacket 38 is also at its upper end on the inside of the Flange bushing 36 attached

An inner telescopic tube 40 is axially in the outer jacket 38 displaceable and in one at the end of the outer jacket 38 attached fixed bearing 42 stored at the upper end

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BAD ORIGtNAi

of the inner slide tube 40 is a movable bearing 43
provided that the necessary two-point support between
between the upper end of the flange bushing 36 and the upper side of the inner sliding tube 40 extends a spring 44 which urges the inner sliding bush downwards Mistake·

The upper end of the inner slide tube 40 is on one
Coupling piece 48 attached, which in turn is connected to an elongated tubular extension 50 »The tubular extension 50 runs in the axial direction inside the spring 44 through an opening in the top of the flange bushing 36 · The tubular extension 50 is at its upper
The end is provided with a flange 52 to which a rubber buffer 54 is attached The buffer 54 cushions the contact between the flange 52 and the top of the flange bushing 36

The sensing and anchoring unit 58 of the anchoring device 14 is shown in detail in FIGS. 5 to 8 » It includes a tubular housing 60 that at one end has a reduced diameter neck 62 threaded on its outside. The housing 60 is also provided with a radial flange 64 · The dem

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_BATH

The opposite end of the neck 62, which is reduced in diameter, is open at the inner side and at its inner surface 66 provided with a thread The housing 60 delimits an inner chamber 68

One on the outside over most of the thread provided Planohbuchae 70 is with the surface 66 of the housing 60 stereoscopic · The flat axle socket 70 has downwardly extending lugs 72, 73, 74, 75 and 76 · each the approaches 72 to 76 hold with a ten-neighboring anaatz a pivot pin 78 between the lugs 72, 73, 74, 75 and 76, respectively, on each pivot pin 78 locking claws 80, 81, 82, 83 and 84 arranged · Each of these locking claws has one on the other side of the pivot pin 78 extending outwardly Lever 86 *

A locking sleeve is arranged displaceably on the outside of the housing 60 and a spring 90 fastened to one end of the flange 64 is acted upon. As shown in FIGS. 5 and 7, the spring 90 is covered with a rubber sleeve 92. The locking sleeve 88 has a stepped inner surface which the levers 86 of the individual locking claws 80 to 84 come into abutment when the locking sleeve 88, as shown in Fig. 5, lies over the lever sections 86 . shown dis-

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⁶ ^ ⁰ ORIGINAL

other spreading of the locking claws 80 to 84 prevents »

Finally, the unit 58 is with a central pin 94 is provided, which is also axially displaceable in the housing 60 is. The pin 94 has a conical end 96 on that brought between the locking pawls 80-84 · Also, the pin 94 comes with a radial paddock 98 provided with a spring 99 between and the inner face of the Haleea 62 holds through the spring 99 i3t the pin 94 in the direction of a lower one Position between the locking claws 80 to 84 applied or put under pressure

As can be seen in Figures 5 and 7, the upper end is of the pin 94 is provided with a fork head 100, to which an extension rod 102 is attached, which through the entire length of the inner tube 40 and the outer jacket 38 and through the extension 50 of the inner tube a holder IO4 to which a rope 106 is attached «That Rope 106 runs through the suspension frame 16 upwards over a pulley 108 in the pulley box 34 »then over a second pulley 110 in the same pulley box 34, then down to one mounted in a reel holder 114 Pulley 112 The end of the rope 106 is attached to a tension spring I16

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BATH ORIGINAL

The roll holder 114 is attached at one end to a piston rod 120 actuatable by a hydraulic cylinder 118. The hydraulic cylinder 118 is provided with an inlet line 122 and an outlet line 124. The lines 122 and 124 are connected to a suitable hydraulic circuit and to (not shown ) Controls connected in order to adjust the unit 58 in accordance with the operation. Finally, the pulley box 34 is mounted an additional winch 128 at the top which is coupled a failure in the hydraulic means with the pulley 108 ·

During operation, a helicopter of the type described can be used on the deck of a ship, for example by means of that described in the aforementioned US Pat. No. 3,303,807 "Bärenfallenaystema" ("bear-trap system") »landed As soon as the helicopter has landed on deck 20, the tail of the aircraft must be on deck 20 attached to prevent it from losing his ™

swings around the front anchorage point

As soon as the aircraft has landed, the pilot actuates a corresponding control, the pressure fluid in the Outlet line 124 presses in and at the same time the inlet line 122 emptied · This extends the piston rod 120, whereby the roller retainer 114 causes daa

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Rope 106, the extension rod 102, the feeler and ver-f Move anchoring unit 58 nacb down and the inner sliding tube 40 moves out near the bottom with the help of the spring 44 and the force of gravity · When the sensor and anchoring unit 58 hits the Deok covering 22, its downward movement interrupted · The sensor and anchoring unit latches there 58 by simply moving the helicopter slightly from one side to the other under the action of the fc force of the spring 44 into a slot 26. The locking sleeve 88 comes into abutment against the webs 24 of the cover layer 22, so that it is pushed against the spring 90 · Up to this point in time the feeler and anchoring unit was in place in its position shown in Fig. 5, in which the locking claws 80 to 84 are collapsed in the middle to form a ball and their position is fixed there with the aid of the locking sleeve 88 · If, however, the locking sleeve 88 after is pushed up against the spring 90, it releases the levers 86 of the locking claws 80 to 84, so that the locking claws be able to pivot about the pivot pin 78 As soon as the locking claws 80 to 84 can pivot, The central pin 94 urged downwardly by the spring 99 moves downwardly as shown in FIG. 7 the locking claws 80 to 84 »This will make the locking claws 80 to 84 naturally spread apart so that they grip under the surfaces of the webs 24 · The shape of the central pin 94 is used in the illustrated in FIG

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OWGINAL

Also position for locking the locking claws 80 up to 84 in this position

The stern of the helicopter 10 is now attached to the deck and, when the helicopter is now brought into a plug-in stuff shop the sensor and anchoring unit follows 58 the slot 26 in the direction in which the plug stuff is pulled, ina ^ m 3ie is prevented from becoming to move in a direction lateral to the direction of movement.

When the anchoring device is to be retracted, the pilot actuates the corresponding control in order to allow the pressure fluid to flow into the inlet line 12c and to let it flow out of the outlet line 124. In doing so, the piston rod 120 is withdrawn with the roller holder 114, which pulls on the cable 106, which in turn lifts the extension rod 102 connected to the pin? 4. By pulling on the pin 94, the latter moves forward through the housing 60 and thereby releases the locking claws 80 to 84. If you see the radial plan 98 of the pin 94, as in Pig. Z sloped, rests against an inner surface of the chamber 68, the inner sliding crown 40 becomes with the core division of a direct cor.t-point between the rope 106, the extension rod 102, the pin 94, the planach 9S and the end of the inner sliding door 40 right pushed up by lifting the

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BATH ORIGINAL

~ 12 -

inner sliding tube 40, the locking sleeve 88 under action of the spring 90 slide down to the locking pawls 80 to 84 inwards again with the help of lever 86 to pivot that they are set "as shown in FIG. 5" when the downward movement of the piston rod 120 continues the rope 106 raises the anchoring unit 58 and the inner sliding tube 40 further so that they

as shown in Pig * 3, in the outer jacket 38 in retracted Position is "

Of course, .an positions near the stroke ends of the Extension ^ rod 102 suitable organs are provided, in order to indicate the relative position of the anchoring unit 58 to the pilot.

In the event of a failure of the hydraulic which actuates the piston rod 120 The system to be able to cut the rope 106 to release the stern probe is a small cutting device 117 provided. As is known, the pilot controls this process by pressing a button (not shown), wherein an explosive charge is ignited in the cutting device 117 with the aid of electrical means, the explosive forces of which operate a blade to cut the rope

Patent claims: Vt / Hf

009815/1133

Claims (1)

Patent claims: 1c anchoring device for securing an aircraft, ζ. · Β · of a helicopter, on an anchoring part, characterized by a tubular body (38) extending from the aircraft (10), from the outer open end of the locking claws (80-84) stick out, one in the. tubular body axially movable pin (94) which is urged around the locking claws (80-84) in a to move the spread-apart locking division, locking means (88) capable of retaining the locking pawls in their unlocked position, and so on are adjustable so that they release the locking claws, so that they are in a locking position through the pin (94) can be spread apart » 2 «Device according to claim 1, characterized in that daaa loading the locking means from an annular sleeve (88) 009815/1133 BAD ORJGfN _AL stand, which is displaceable under the action of a spring on the tubular body in the axial direction, so that they are normally about the locking claws (80-84) pushes and holds them back in the unlocked position 3. Device according to claim 1, characterized in that the tubular body consists of two telescoping connected pipes (38, 40), of which the outer pipe (38) is attached to the fuselage of the aircraft and the inner telescopic tube (40) contains the outer end of the tubular body, means being provided to telescope the tubular body out of the aircraft and into the aircraft move in 4. Device according to claim 1, characterized in that the anchoring part is in the form of a raised flat deck (20) in which mutually separate, mutually parallel slots (26) are formed » 5. Device according to claim 1, characterized in that the outer end of the tubular body has an edge has on which the locking claws (80-84) are articulated are attached in such a way that they are in a radial plane between an essentially circumferential plane 0098 15/1133 '/ · BATH ORIGINAL It can be swiveled into a second position and a spread-out second position, the pin (94) extending in the axial direction being attached in such a way that it merges axially into the tubular body (58, 40) from a first position the locking claws (80-84), to the retracted second position in the tubular body sliding back and forth, in which it is normally urged Verrie _f -, elunßskl: iuen (80-84) in a first position 3ov, -ie of the pin (94) in its second position, so that the locking means (66) can be actuated to release the Verrietelungsklauen (80-84), so that the pin (94) can move into a harvesting position and thereby spread the locking claws apart into their second, locked position * b »Device according to claim 5» characterized in that the locking claws (80-84) each have the shape of a toggle lever, which has a part in the form of a spherical segment having" 7 · Device according to claim 3t, characterized in that the pin (94) is connected to a hydraulic lifting mechanism in the aircraft via the telescopic tube (38, 40) is, wherein means (98) are provided which sioh with the 0 0 9 815/1133 A Lifting the pin (94) directly or indirectly against the inner telescopic tube (40) so that the device is drawn into the plug stuff 8. Fastening device for fastening a body to an anchoring part with a delimiting slot Bars, characterized by a tubular part, one end of which connects to the body ^ leaves and its other end open and from an edge is delimited by locking claws (80-84), the are hinged to the edge of the tubular part so that they are between a collapsed position, in which they have an overall smaller effective dimension than the dimension of the slot (26), and move a spread-apart position, in which the common effective dimension of the locking pawls (80-84) is larger than the size of the slot (26), a pin (94), which in the axial direction w device of the tubular part between a position between the locking claws (80-84) that defines the locking claws in the spread-apart position and a retracted position in the tubular part, an annular locking sleeve (88) which is mounted on the tubular part between one of the locking claws in a collapsed position defining position and a retracted position 00981 B / 1 1 33 / BATH ORIGINAL movable iat in which the locking claws (80-84) released so that everyone can move aioh into a spread-apart position 9. Device according to claim 8, characterized in that daaa the annular locking sleeve (88) normally towards one of the pawls in their unlocked position fixing position is urged, while the pin (94) normally in the direction of one of the locking claws Spreading position is applied and means for retracting the pin (94) are provided » 10 · device according to claim 7, characterized in that in the plug stuff a near above extending Suspension frame (16) is provided through which the outer tube (38) attached to the aircraft with an extension rod (102) connected to the pin (94) is, the naoh above duroh the inner tube (40) and the suspension frame (16) runs, while the lifting means consist of a hydraulic piston with piston rod (120) and cylinder (118) which work together to the To lift the extension rod (102) in the suspension frame (16) » 009815/1133 ^BATH ORIGINAL