DK201770028A1 - Lifting tool for mounting and removing the frame of a skylight in a sloping roof as well as the method of mounting and removing using the lifting tool - Google Patents

Abstract

Lifting tool (1) for mounting and removing the frame of a skylight window in a sloping roof structure, the lifting tool comprising two support racks (2) arranged to be placed on the roof on opposite sides of a mounted skylight of the skylight window, each comprising a support foot (3), a support leg (4), and an angled rod (5) which together form a triangle with a connecting point in each corner, an overlay (6) which can be releasably fastened between the support racks (2), and a play ( 7) which can be mounted on the bar (6).

Description

( ¹⁹ ) DENMARK ( ¹ °) DK 2017 70028 A1

(12)

PATENT APPLICATION

Patent and Trademark Office Lnt.CI .: B66F19 / 00 (2006.01) E04G 3/26 (2006.01) E04G 21/14 (2006.01)

E04G 3/22 (2006.01)

Application Number: PA 2017 70028

Filing Date: 2017-01-16

Running Day: 2017-01-16

Aim. available: 2018-07-17

Publication date: 2018-07-27

Applicant:

VKR Holding A / S, Breeltevej 18, 2970 Hørsholm, Denmark

Inventor:

Bjarne Andrés Andersen, Slettebjerget 121 New Hammersholt, 3400 Hillerød, Denmark

Clerk:

AWA Denmark A / S, Strandgade 56.1401 Copenhagen K, Denmark

Title: Lifting tool for mounting and removing the frame of a skylight in a sloping roof as well as the method of mounting and removing using the lifting tool

Published publications:

DE 202016001203 U1 (BEAR, BENJAMIN) 2016-06-16.

US 2016/0265238 A1 (BRINKMAN, DAVID BRUCE) 2016-09-15.

GB 2528106 A (JONES, CHRISTOPHER) 2016-01-13.

US 2012/0298939 A1 (ANDREWS, JESS PAUL) 2012-11-29.

US 6056273 A1 (SMITH, DANIEL I.) 2000-05-02.

Summary:

Lifting tool (1) for mounting and removing the frame of a skylight window in a sloping roof structure, the lifting tool comprising two support racks (2) arranged to be placed on the roof on opposite sides of a mounted skylight of the skylight window, each comprising a support foot (3), a support leg (4), and an angled rod (5) which together form a triangle with a connecting point in each corner, an overlay (6) which can be releasably fastened between the support racks (2), and a play ( 7) which can be mounted on the bar (6) ·

To be continued...

DK 2017 70028 A1

DK 2017 70028 A1

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a lifting tool for mounting and removing the frame of a skylight in a sloping roof, the lifting tool comprising two support rods arranged to be placed on the roof on opposite sides of a mounted window frame of the skylight, each comprising a support foot, a support leg and an angular bar, which together form a triangle with a connecting point in each corner, a crossbar that can be releasably fastened between the support racks, and a playable mount on the bar. The invention further relates to a method of mounting and removing the frame of a skylight in a sloping roof.

Prior art

The installation and removal of skylights is often associated with heavy lifting, as the processes involve lifting the frame and pane in or out of the window sill. Such lifting is often carried out manually by the craftsmen who install or renovate the skylight, which can cause long-term damage to the work. Furthermore, this work is carried out in difficult circumstances, where both the slope of the roof and the wind and weather can make the work process difficult.

DE 202016001203 U1 describes a lifting tool for mounting and maintaining a skylight window. The lifting tool consists of two support stands that are placed on each side of the installed window frame, so that a winch placed on an overlay of the rack can lift the pane and frame via a suction device. In order to be able to adjust the lifting frame to the width of the window frame and the angle of the window, the frame components have the possibility of being telescopically adjusted in length.

Although the telescopic adjustment allows the lifting stand to be adapted to several different types of windows and roof structures, it also makes the lifting tool impractical, since when it is to be set up and separated, the lifting tool must be assembled / separated at each telescopic connection, which takes time and delays the workflow of the artisan.

A further problem with this way of assembling and separating the lifting tool

DK 2017 70028 A1 is that, when separated, the lifting tool is split into many separate parts, which makes it difficult for the craftsman to keep track of each part.

It is therefore the object of the invention to provide a lifting tool which aids the artisans in their work of dismantling and mounting the frame of the window, but at the same time is manageable and practical when set up and disassembled.

Summary of the Invention

The invention solves this by a lifting tool as described in the introductory section, wherein two of the connection points between the support foot, the support leg and the angle bar of each support rack are rotatable and the third connection point can be triggered when the lifting tool is not in use, so that the support frame can be collapsed .

The advantage of this is that the lifting tool can be separated by the overlays being removed from the support racks, and the support racks are separated at the connection point which can be released, thereby being able to collapse around the two pivotal connection points. Thus, the support stand remains in one easily manageable piece in a collapsed state. Therefore, the entire lifting tool can be transported in fewer pieces than lifting tools described in the prior art. This is especially advantageous when the lifting tool is to be installed on the roof, as transport from the ground up to the roof structure often involves narrow passages, such as stilts, where lifting tools, such as those of the prior art, will be problematic to maneuver through.

Each support frame is constructed such that the support foot is arranged to abut against the roof structure adjacent to and substantially parallel to one of the two side frame elements of the window frame, such that the roof structure provides a resting surface for the support tool. In an upright condition, the support leg extends substantially vertically from the support foot so that the weight of the frame and pane of the window is best transmitted when the lifting tool is in use.

DK 2017 70028 A1

In one embodiment, at least one of the connection points in each support rack is slidable so that the support rack can be adapted to the roof pitch. By providing a lifting tool in which at least one of the connecting points between the angle bar, the support foot and the support leg is slidable, it will be possible to assemble the support rack so that the support leg can extend substantially vertically regardless of the roof pitch. This means that the lifting tool will be applicable to roof structures of all slopes.

In one embodiment, the displaceable connection point can be provided by making one of the pivotal connection points slidable during the erection of the lifting tool, e.g. by arranging the pivotal connection point on a slidable carriage which can be locked in a fixed position in the upright state of the lifting tool.

However, in a preferred embodiment, the displaceable connection point is provided by allowing the releasable connection point to be displaced along the length of one of the two of the support foot, the support leg and the angular rod connected by the releasable connection point.

In such an embodiment, the displaceable connection is provided by means of a long hole in either the support foot, the support leg or the angular rod so that the point of connection which can be released can be placed along the length of the long hole during the erection of the support racks.

In another such embodiment, the displaceable connection is provided by a series of connecting holes located in either the support foot, the support leg or the angular bar such that the release point which can be released can be placed in the connection hole most suitable for the slope of the roof. .

The advantage of using a long hole to provide the slidable connection is that each lifting rack can be adjusted more precisely to the slope of the roof, the long hole allowing placement of the releasable connection point along the entire length of the long hole. The disadvantage of using a long hole is that both support racks must be set precisely if the lifting tool is to avoid distortions. To help with this, the long hole on each support rack could be provided with markings along the length of the long hole, so that

The correct positioning of the triggerable connection point is simplified.

The advantage of using a series of connecting holes to provide the slidable connection is that the arrangement of each lifting rack is made faster, making it easy for the craftsman to adjust each support rack to the pitch of the roof. To make the arrangement easier, each hole can advantageously be provided with a marking showing the range of roof slopes for which the given hole is arranged.

In one embodiment, the lifting tool further comprises a mounting strap that can be stretched out between the support feet. By providing a mounting strap that can be clamped between the two support feet, the two support feet are prevented from sliding away from each other. The mounting strap is arranged to extend along the upper side of the top member of the window sill so that the mounting strap also prevents the lifting tool from sliding downwards on the sloping roof during installation and / or during use.

In a preferred embodiment, the length of the mounting strap is adjustable so that it can be adjusted to the width of the window frame. The mounting strap can be replaced by a rigid bar or beam if it is also necessary to keep the support feet from sliding into each other. However, when set up, this is usually prevented by the side elements of the window frame, which is why a lighter and more manageable mounting strap is preferred over a rigid bar / beam.

In one embodiment, at least one, preferably both, the support feet comprises a lath hook adapted to grip a lath adjacent to the window. By providing the lifting tool with a lathing hook which projects down towards the roof structure, it is possible to attach the lifting tool to one or more of the transverse laths of the roof structure. In a preferred embodiment, a latch hook extends from each support rack from an upper end of the support foot from which it can grip a nearby latch over the window sill. In one embodiment, the lath hooks are telescopically arranged in the support feet so that they can be adjusted relative to the distance from the window to the lath.

DK 2017 70028 A1

In one embodiment, the bar is provided with two connecting members which are adapted to connect the support racks to the bar, and which are slidable along the length of the bar, so that the distance between the support racks can be adjusted relative to the width of the window frame.

In one embodiment, each connecting member of the overlayer comprises a connecting member having a cavity having an inner shape which fits into the outer shape of the support legs so that the connecting members may engage around the support legs. In a preferred embodiment, the connecting elements are separate elements which are displaceable along the length of the bar, so that the distance between the support racks can be adjusted according to the width of the window.

In another aspect, the invention relates to the use of the lifting tool according to the first aspect for mounting and dismounting a window and frame of a skylight in a sloping roof structure.

The invention relates in a third aspect to a method of mounting or removing a pane and a frame in / from a skylight in a sloping roof with a lifting tool, the method comprising the steps of placing a support rack parallel to each of the side elements of the window frame, to assemble each support stand by connecting the third triggerable connection point, connecting the overlay to the support stands, mounting the game to the overlay, attaching the pane and frame to the game, and mounting / removing the pane and frame in / from the window frame.

The advantage of a method using a lifting tool as described is to simplify both erection and transport. The process is thus faster and thus more efficient for the craftsman who installs / removes the skylight.

In one embodiment, the method further comprises the step of positioning the slidable connection point on each support rack such that the support legs are substantially vertical. This ensures that the weight of the pane and the frame of the window are best transferred from the support leg to the support feet and that the connection point between these two components is not unnecessarily loaded during the use of the lifting tool.

DK 2017 70028 A1

In one embodiment, the method further comprises the step of clamping a mounting stop between the support feet along the top of a top member of the window sill. In a preferred embodiment, this step further comprises adjusting the length of the mounting strap to the width of the window. By using a mounting strap while setting up the lifting tool, a quick and secure way of securing the lifting tool is provided so that it does not slip off the roof during installation.

In one embodiment, the method further comprises the step of attaching one or more hooks of the lifting tool to a neighboring hanger in the roof structure. By using hanging hooks to attach the lifting tool to the roof structure, the lifting tool ensures that the lifting tool remains stationary and stable, even when carrying the full weight of the pane and frame of the window. This step may further comprise exposing a roof to the roof structure by removing a roof covering such as bricks or roofing sheets.

Brief description of the figures

The invention will be described in more detail below in non-limiting embodiments with reference to the figures in which:

FIG. 1 shows a lifting tool according to the invention in the arranged condition; FIG. 2 shows a lifting tool according to the invention in a sign, folded state; FIG. Fig. 3 shows a lifting tool according to the invention in a separated, folded state; 4 shows a lifting tool according to the invention arranged on an inclined roof and bearing on the frame and pane of a skylight window; FIG. 5 shows an overlayer of the lifting tool according to the invention; FIG. 6 shows a mounting strap of the lifting tool according to the invention; FIG. 7 shows a game of the lifting tool according to the invention; FIG. Fig. 8a shows the game during mounting on the bar; Fig. 8b shows a schematic drawing of the game mounted on the bar; 8c shows a perspective view of the game mounted on the bar,

DK 2017 70028 A1 fig. 9a shows the lifting hook of the game; FIG. Figure 9b shows the lifting hook of the game in engagement with a suction cup assembly of the lifting tool in an unlocked state; Figure 9c shows the lifting hook of the game in engagement with a suction cup assembly of the lifting tool in a locked condition; 10a shows the first step of the method of setting up the lifting tool according to FIG. 10b shows how the support racks are arranged; FIG. 10c shows how the overlay is mounted on the support racks; FIG. 11a shows a pane and a frame with a suction cup assembly sucked firmly; FIG. Fig. 11 b shows a window and a frame being lifted through the window frame of a skylight window; 11c shows a pane and a frame that are lifted in place in / out of the window sill.

Detailed description of the invention

FIG. 1 shows a lifting tool 1 according to the invention. The lifting tool 1 comprises two support racks 2 which together extend the lifting beams, which are arranged to extend, in a set position, over a mounted window frame of a skylight window, in order to be able to lift the frame and pane of the window into place in the window frame, if the window is mounted. or lift the frame and pane out of the window sill if the window is removed / maintained.

Each of the support stands 2 comprises a support foot 3, a support leg 4 and an angle bar 5. The support foot 3 is arranged to engage the roof to form a stable basis for the lifting tool 1 and distribute the weight of the lifting tool 1 and the pane and frame of the window evenly over the roof structure. . The support leg 4 is arranged to support the overlay 6, in the embodiment shown, the support leg 4 is provided with a cylindrical metal tube having the necessary structural strength to support the weight of the pane and the frame of the window. VinDK 2017 70028 A1 boiler bar 5 is arranged to extend between the support foot 3 and the support leg 4 to stabilize the support leg 4. The two support rods 2 thereby form a triangle arranged to be arranged along respective side elements of the window frame to support the bar 6 .

In order to have the best load-bearing capacity, the support legs 4 in an erected condition should preferably be substantially vertical such that each support leg 4 does not experience a force of force during use which will unnecessarily load the support rods 2. In the simplest embodiment of the support racks 2 of the lifting tool 1, this means that the lifting tool 1 will be adapted to roof structures with a certain inclination, the triangle stretched by the support foot 3, the support leg 4 and the angular rod 5 having fixed lateral lengths and therefore also angles, ia. a. the angle between the support foot 3 and the support leg 4 which defines the angle of the support leg 4 with respect to the roof and thereby also the ground.

However, in almost all embodiments of the invention, the lifting tool 1 is adjustable for roof structures with arbitrary slopes. This is allowed by at least one of the connecting points between the support foot 3, the support leg 4 and the angular rod 5 being displaceable along the length of one of the three components mentioned, such that at least one side length of the triangle stretched by the support foot 3, the supporting leg 4 and the angular rod 5 , is adjustable, which makes the angles of the triangle also. The support leg 4 can thereby be adjusted to be vertical regardless of the slope of the roof.

FIG. 2 shows an embodiment of a support rack 2 of the lifting tool 1 according to the invention in a collapsed state. In the illustrated embodiment, the support foot 3 of the support frame 2 is pivotally connected to the support leg 4 and the angular rod 5 around pivotal connection points arranged not to be readily releasable but instead to remain connected in all states of the lifting tool 1. By readily releasable is meant that the connection points can be triggered by the use of tools, but are arranged not to be separated unless parts of the support frame 2 need to be replaced.

The point of connection between the angular rod 5 and the support leg 4, on the other hand, is arranged to be releasable, so that the angular rod 5 and the support leg 4 can be connected to bring the lifting tool 1 into a raised state, and

GB 2017 70028 A1 so that the angular rod 5 and the support leg 4 can be separated to bring the lifting tool 1 into the collapsed state.

In other embodiments, any of the three connection points between the support foot 3, the support leg 4 and the angle bar 5 may in principle be arranged to be the point of connection which can be triggered. However, the connection point between the support leg 4 and the angle bar 5 is preferred, since it is not subjected to the same load as the connection point between the support foot 3 and the support leg 4, and because it is positioned highest so that the craftsman can make the joint or disconnect from a standing working position .

In the illustrated embodiment, the angular bar 5 of each support frame 2 is provided by a flat bar rotatably mounted on the side of the support foot 3 at the top end of the support foot 3, i.e. the end positioned in the upright position near the upper side of the skylight. Because the angle bar 5 is connected to the side of the support foot 3, this means that the angle bar 5 lies along the side of the support foot 3 in the collapsed state, thereby not competing for space with the support leg 4, which in the collapsed state lies along the top side of the support foot 3.

Because the angle bar 5 does not carry a significant weight, but merely supports the support leg 4, the angle bar 5 can be formed in a lighter and weaker shape and / or material than the support leg 4. The angle bar 5 is therefore provided by a flat metal bar which does not have the same structural strength as the support leg.

4th

In the drawing, in fig. 2, it is further seen how the displaceable connection point mentioned above is provided. Along the angular bar 5, a series of connecting holes 51 are arranged which allow the point of connection between the angular bar 5 and the support leg 4 to be displaced along the length of the angular bar 5, so that the support frame 2 can be adjusted relative to the roof pitch so that the support leg 4 is substantially vertical in position condition. Each connection hole 51 is provided with a marking 52 indicating which roof pitch interval the respective connection hole 51 is arranged for.

In an alternative embodiment, the row of connecting holes 51 would

DK 2017 70028 A1 could be replaced by a single long hole, whereby continuous rather than discrete adjustment of the displacement at the connection point would be possible. An embodiment with a long hole rather than a series of connection holes 51 can be adjusted more precisely in relation to the roof pitch. However, it will require more fine tuning and thus time for the craftsman during installation to avoid distortions in the lifting tool 1.

In the illustrated embodiment, each support rack 2 further comprises a lashing hook 31 located at the top end of the support foot 3. The lashing hook 31 is arranged to grip a latch over the top element of the window frame in the roof structure, so that the lashing hook 31 prevents the lifting tool 1 from sliding down of the sloping roof construction. In the illustrated embodiment, the latch hook 31 can be telescopically pulled out or pushed into the support foot 3 so that the latch hook 31 can be adjusted relative to the distance between the window sill and the nearest leg.

FIG. 3 shows a lifting tool 1 according to the invention in the collapsed state. Because of the releasable connection point in each support rack 2, it is possible to fold each support rack 2 together into a very compact unit. This construction further means that the lifting tool 1, when separated, comprises only three parts besides a winch 7, a drive extender 76 and a mounting strap 8.

FIG. 4 shows a lifting tool 1 according to the invention in a packed state, where the two collapsed lifting rods 2 lie side by side along the side of the bar 6. To hold the three parts together, the parts can either be provided with snap locks or other fasteners which can is triggered. Alternatively, the three parts 2, 6 may be held together by the mounting strap 8 or a storage pouch arranged therefor. The ability to store and handle the lifting tool 1 as one connected unit when in the packed condition makes the lifting tool 1 manageable and allows it to be easily transported to and from the roof and takes up very little storage.

FIG. 5 shows the overlay 6 of the lifting tool 1 according to the invention. In order to be used for multi-width skylights, it is possible to attach the support rods 2 at variable positions along the length of the overlay 6. IN

In the embodiment shown, this is allowed by the overlap 6 being provided with two individual connecting elements 61 for connecting the overlap 6 to respective of the support rods 2. The connection is provided by each connecting element 61 having a connecting part 62 having a cavity whose internal shape substantially fits the outer shape of the support leg 4 on the respective support rack 2. In the embodiment shown, the support legs 4 are provided by metal tubes having a cylindrical shape, so that each connecting member 61 has a connecting member 62 with a cylindrical cavity capable of accommodating a part of the support leg 4.

In order to secure the connecting members 61 in the correct position along the length of the respective support leg 4, the supporting leg 4 and / or the connecting element 61 may be provided with a projection which acts as a stop block such that the supporting leg 4 and the connecting element 61 abut each other when the connecting element 61 is in the correct position. Alternatively, the connector 61 may be provided with a fastener, e.g. a screw which can be tensioned against the support leg 4 so that the connecting element 61 can be releasably fastened to the support leg 4.

In the illustrated embodiment, the overlay 6 is provided with engagement grooves 64 running along the length of the overlay 6. In the illustrated embodiment, an engagement groove 64 extends at the top and bottom of the overlay 6, on both sides of the overlay 6. These engagement rails 64 secure that the connecting members 61 engage securely around the bar 6. In the illustrated embodiment, each connecting member 61 is secured to the bar 6 by means of a clamping member 63 on the connecting member 61. Preferably, the clamping members 63 can be operated by hand, thereby permitting rapid installation and packing of the lifting tool 1.

FIG. 6 shows an embodiment of the mounting strap 8 of the lifting tool

1. The mounting strap 8 is arranged to keep the two support rods 2 from sliding apart. This is achieved by tensioning the mounting strap 8 between the two support feet 3. In order to be able to attach the mounting strap 8 to the support feet 3, the mounting strap 8 is provided with a hook 81 at each end, which hook 81 is arranged to engage a hole 32 in page on a respective of

DK 2017 70028 A1 support feet 3.

The mounting strap 8 is additionally arranged to prevent the lifting tool 1 from sliding down the roof structure. This is achieved by clamping the mounting strap 8 over the upper side of the top member of the window frame so that the window frame carries a portion of the weight of the lifting tool 1. In embodiments where the lifting tool 1 comprises hanging hooks 31, this function may be temporary. that the mounting strap 8 only holds the lifting tool 1 in place while attaching the hooks 31 to a lath. In embodiments that do not include hooks 31, the mounting strap 8 may be adapted to carry all the weight of the lifting tool 1 and the frame and pane of the window.

In order to be able to adjust the width of the lifting tool 1 in the erected state, ie. the distance between the support rods 2, it is possible to adjust either the length of the mounting strap 8 or fasten the hooks 81 at the variable positions along the length of the support feet 3. The last option can be accomplished by placing a series of holes 32 in the side of each support foot 3 and using a fixed length mounting strap 8 such that the length of mounting strap 8 which spans between the support feet 3 depends on which hole 32 the hooks 81 are inserted.

In the embodiment shown, the mounting strap 8 is divided in two and assembled with a buckle 82, whereby the length of the mounting strap 8 can be adjusted to fit the width of the window frame. The mounting strap 8 may be provided with length markings showing where the strap 82 is to be tensioned so that the mounting strap 8 achieves a correct length. In case the lifting tool 1 is designed for windows of certain makes and models with known standard dimensions, length markings may mark where the clamp 82 is to be tensioned to adjust the length of the mounting strap 8 to the model of the window to be mounted / dismounted.

In the illustrated embodiment, where the length of the mounting strap 8 can be varied, the mounting strap 8 further comprises two rigid angular brackets 83 arranged to abut the top member of the window frame and down along a respective side element of the window frame or the sides of the support footDK 2017 70028 A1 there 3 so that the mounting strap 8 is protected from the hard edge of the support feet 3 or the window frame and experiences less wear during use.

FIG. 7 shows a close-up view of the game 7 of the lifting tool 1. The game 7 is arranged to be mounted on the bar 6 and to lift the frame and pane of the window. In the illustrated embodiment, the game 7 comprises two lifting hooks 71 which are connected to a hoisting coil 72 via a cable 73. The two lifting hooks 71 are arranged to attach the game to the pane of the window frame. In some embodiments, the lifting hooks 71 are arranged to grip the frame of the window themselves, but in the illustrated embodiment, the lifting hooks 71 are arranged to engage a suction cup assembly 9 which can be sucked onto the pane to provide an engagement surface for the lifting hooks 71.

The hoist coil 72 is connected to an eye 78 on the underside of the winch 7, which eye 78, by rotation, drives the hoist coil 72. The eye 78 is adapted for connection with either a swivel handle that allows the winch 7 to be operated manually by hand, or, in a preferred embodiment, with a drive extender 76 which allows a motorized drive to be connected to drive the game. The motorized drive unit is preferably provided by a screwdriver or similar standard tool, the drive exchanger 76 comprising a connector portion adapted to engage the standard tool, e.g. a hexagonal trade for connection to a bit screwdriver or the drill cartridge of a screwdriver.

The game 7 comprises two additional mounting flanges 74, 75 projecting from a surface of the game adapted to abut the abutment

6. As seen in FIG. 8a-c, the first mounting flange 74 is arranged to project over the bar 6 and engage one of the engaging grooves 64 on the opposite side of the bar 6, so that the weight of the play and the pane and frame pull the first mounting flange 74 into. the engagement groove 64, thereby securing the game 7 to the bar. The second mounting flange 75 is in the mounted state of the winch 7 along the underside of the bar 6, so that the winch 7 is prevented from being lifted vertically by the bar 6. The two mounting flanges 74, 75 thereby ensure that the winch can only be removed by flipping it off, opposite of how it was mounted.

DK 2017 70028 A1

FIG. 9a-c show a suction cup assembly 9 of the lifting tool 1 according to the invention. The suction cup assembly 9 is arranged to be able to suck on the pane of the window so that a gripping surface is provided for the hook 7 of the winch 71. As seen in FIG. 9b, the suction cup assembly 9 comprises a frame 92 on which are mounted three suction cups 91 adapted to support the weight of a window and frame of the window. The suction cups 91 are distributed symmetrically about a center axis of the frame 92 so that the weight of the pane and the frame of the window are evenly distributed so that the pane and frame do not tilt to one side as they hang upright by the lifting tool 1.

The suction cup assembly 9 further comprises a lifting bar 93 extending across the center axis to be gripped by the lifting hooks 7 of the game 7. In order to be able to grip the lifting bar 93 securely, the lifting hooks 71 are mounted so that they face each other. In addition, the lifting hooks 71 are rotatably arranged around a pivot point 94, which allows the lifting hooks 71 to be moved between an open and a locked state. In order to lock the lifting hooks 71 in the locked state so that the suction cup assembly 9 cannot fall off the lifting hooks 71, each lifting hook 71 comprises a locking hole 95. As the lifting hooks 71 are rotated to the locked state around the pivot point 94, the two locking holes 77 are aligned, whereby a pin or other stop member may be positioned through the fuse holes 95 so that the lifting hooks 71 are prevented from rotating about the pivot point 76. In the illustrated embodiment, the stopping member is provided by a shackle 79. The shank 79 thus acts as both a stop member to lock the two lifting hooks 71 into it. locked position, and coupling element to cable 73 in game 7.

FIG. 10a-c illustrate the method of setting up a lifting tool 1 according to the invention. If the lifting tool 1 comprises hanging hooks 31, the method starts with the step of providing access to the first lay in roof construction over window frames, in alignment with the outside of the long sides of the window frame. This step may include removing any. roof tile / roof plate and to make sure that the lath and nail are in good condition.

Thereafter, the support rods 2 can be arranged parallel to the side elements

DK 2017 70028 A1 of the window sill on respective sides of the window. If the lifting tool 1 comprises a mounting strap 8, the method comprises checking the mounting strap 8 for damage before use and adjusting the distance between the angle brackets 83 by adjusting the clamp 82 of the mounting strap 8. The mounting strap 8 is placed around the top of the top element of the window frame and then the angle brackets 83 are adjusted about the corners of the windowsill.

The support racks 2 are then laid out, in the folded state, on the roof on either side of the window frame, parallel and level with the outside of the side elements of the window frame. The support racks 2 are secured against falling, by hooking the hooks 81 of the mounting strap 8 into the holes 32 in the support feet

3. The length of the roof hooks 31 is now adjusted to hold the support rods 2 in the roof of the roof structure. This is done by pulling the hooks 31 out of the support feet 3 until the hooks 31 of the hooks attach to the hooks in roof construction. The mounting strap 8 then holds only part or none of the weight of the support rods 2, while the loading hooks 31 carry most or all of the weight.

Each support leg 4 is raised with an adjustment that fits the pitch so that the support legs 4 are substantially vertical. In the illustrated embodiment, the releasable connection point is the connection point between the angular rod 5 and the support leg 4. The support rods 2 are therefore brought into the upright position by connecting the support leg 4 and the angular rod.

5. The support racks 2 are set correctly when the angle bar 5 and the support leg 4 are connected to the hole 51 in the angle bar 5, which shows the interval for the current pitch inclination. If the roof pitch is unknown, the support leg 4 is raised in the setting where the support leg 4 is closest to the vertical.

The method then comprises the step of mounting the overlay 6 on the support racks 2. This step comprises adjusting the distance between the connecting elements 61 on the overlay 6 so that the distance corresponds to the distance between the upright supporting racks 2. When the distance between the connecting elements 61 is correct, the clamping elements 63 are tensioned. attaching the connecting elements 61 to the overlap 6. The overlap 6 is then mounted on the vertical support legs 4. This step comprises

To lift the connecting members 62 down over the support legs 4 so that the support legs 4 go up through the part 62 of the connecting elements 61, the inner shape of which fits into the outer socket of the support legs 4.

In the illustrated embodiment, the arrangement of the lifting tool 1 comprises here5 after mounting the game 7 on the overlay 6. In the embodiment shown in FIG. 8ab, this step is performed by engaging the mounting flange 74 of the game with an engagement groove 64 on the bar 6.

FIG. 11a-c illustrate the method of mounting / removing the pane and frame of the window after the lifting tool 1 according to the invention is arranged above the window sill. In one embodiment, the method comprises the step of mounting the suction cup assembly 9 on the pane in order to attach the play to the pane and the frame of the window. This step may include cleaning the pane so as to provide a clean surface for sucking the suction cup assembly 9 firmly on.

The method then comprises the step of lifting the pane and frame of the window into / off the window sill. This step is preferably performed by lifting the window through the opening in a vertical position and rotating 90 degrees as shown in FIG. 11 b so that the window and frame achieve as much space as possible for the window sill.

DK 2017 70028 A1

Claims (10)

patent claims 1. Lifting tool for mounting and removing the frame of a skylight in a sloping roof structure, the lifting tool comprising: two support racks arranged to be positioned on the roof on opposite sides of a mounted skylight of the skylight, each comprising a support foot, a support leg and an angular bar, which together form a triangle with a connecting point in each corner, an overlay, which can be releasably fixed between the support racks; and a game that can be mounted on the bar; characterized in that two of the connection points between the support foot, the support leg and the angle bar of each support rack are rotatable, and the third connection point can be triggered when the lifting tool is not in use, so that the support frame can be collapsed. A lifting tool according to claim 1, wherein at least one of the connection points in each support frame is slidable so that the support frame can be adapted to the roof pitch. A lifting tool according to any one of the preceding claims, wherein the lifting tool further comprises a mounting strap which can be stretched out between the supporting feet. Lifting tool according to any one of the preceding claims, wherein the support racks each comprise a lifting hook. Lifting tool according to any one of the preceding claims, wherein the support racks can be releasably fastened to the bar at several positions along the length of the bar. A lifting tool according to any one of the preceding claims, wherein the lifting tool further comprises a suction cup assembly adapted to be sucked onto the pane of the window. A method of mounting or removing a pane and a frame in / from a skylight in a sloping roof with a lifting tool, the lifting tool comprising two support rods arranged to be placed on DK 2017 70028 A1 taken on opposite sides of a mounted skylight of the skylight window, each comprising a support foot, a support leg and an angular bar, which together form a triangle with a connecting point in each corner, an overlay that can be releasably fastened between the support racks, and a game which can be mounted on the bar, wherein two of the connection points between the support foot, the support leg and the angle bar of each support rack are rotatable, and the third connection point can be released when the lifting tool is not in use, so that the support rack can be collapsed where the method includes the steps: (a) placing a support rack parallel to each of the side elements of the window sill, (b) assembling each support rack by connecting the third releasable connection point, (c) connecting the bar to the support racks, (d) mounting the game to the bar , (e) fixing the pane and frame to the game, and (f) mounting / removing the pane and frame in / from the window sill. The method of claim 8, wherein at least one of the connection points is displaceable so that the support frame can be adapted to the roof pitch, and the method further comprising the step of placing the displaceable connection point on each support frame so that the support legs are substantially vertical. The method of claim 8 or 9, wherein the lifting tool further comprises a mounting strap which can be stretched between the support feet, the method further comprising the step of clamping the mounting stop out between the support feet along the top of a top member of the window frame. The method of any one of claims 8 to 10, wherein the support racks each comprise a lath hook and the method further comprising the step of attaching the lath hooks to a nearby lath in the roof structure. DK 2017 70028 A1 1.7

DK 2017 70028 A1 2.7

Figure 4 DK 2017 70028 A1

Figure 7 DK 2017 70028 A1 4.7

Figure 8c DK 2017 70028 A1 5.7

Figure 9c DK 2017 70028 A1 6.7

Figure 10a

Figure 10b

Figure 10c DK 2017 70028 A1 7.7

Figure 11b Figure 11a

Figure 11c