DE1484029A1 - Connection device for scaffolding parts - Google Patents

Description

PATKNTANWALTK MlMWNG. ALFRED MAXTON 5 COLOGNE-MARIENBURG January 20, 1964

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Robert Charles Rolland *

CANNES (Alpes - Maritimes) France

Place Stanislas 7

Connection device for scaffolding parts

The priority is claimed from the English patent application 2813 of 23 * 1.1963.

The invention relates to a device for connecting scaffolding parts and in particular to a device which makes it possible to attach the ends of girders, cross braces and the like, especially on a building site or yard to be attached to a stake. These frame parts are arranged in precisely predetermined positions with respect to one another.

Devices that can be dismantled are already known which allow scaffolding parts to be quickly attached to a pole, to create what is commonly referred to as a "scaffold knot" by technicians.

These devices essentially consist of two BleohtÜllen, which are intended to symmetrize each other] opposite on a centering chuck, in particular

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special to the core of a pile, to be fitted in radial molds or bearing shells carried by them picking up and holding the ends of the beams; the latter are then on the molds fastened by bolts that are embedded at the end of the beam and on the bearing molds encompassing this are.

However, these fasteners do not allow the forces developed by the bolts to be precisely metered and, moreover, these bearing shells do not provide an obstacle to the sliding forces exerted by the carriers forces exerted on the stakes strive to make their appearance.

It is an object of the present invention to remedy these drawbacks located to provide a device for connecting the parts of a scaffold knot that are independent of the latter, of reduced bulkiness and dismantling.

For this purpose, each pile of two tubes * "* which are coaxial and disposed with each other and connected together by _o a longitudinal mandrel opposite to the ο" ends of the tubes is held and fixed, said discs, plates or the like. Foremost φ are drawn on the mandrel in order to be inserted between the front ends of the tubes and to hold the ends of the beams between their opposing surfaces.

According to an essential feature of the invention, the fastening means provided on each of the ends of the dome allow to fix this on the end of each tube, in such a way that the ears are open support the intermediate washers while the mandrel is loaded by an extension load

It is easy to understand that under these conditions, energizing the dome helps all the individual elements forming the device more and more in the transmission of the through the upper tube or the carrier to participate in the forces absorbed on the lower tube.

The invention relates in the same way to an assembly method, which allows the girders to be fastened quickly and precisely to the piles of a structure »

This procedure consists of straightening at the end of each one Pipe to attach a mandrel, which itself is on the end of the already in place Rohres is attached before the discs or plates have been drawn on the mandrel to this between to arrange the front sides of the pipes.

According to the invention, the method is characterized in that that the discs, or plates or the like. Which are intended between their opposite

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Faces to receive the ends of the beams pressed against each other as the tube is attached to the mandrel until the thorn begins, an extension incision to have

Further features of the invention will become apparent from the following description, which refers to the attached Drawings refers to, wherein the drawings and the description show only exemplary embodiments which the invention is not limited.

In the drawings is:

Fig. 1 is a perspective view of a tubular Stake and a socket.

Pig. FIG. 2 is a perspective view of a disk with three radial staples or brackets at the moment of FIG Winding up on a jack, which is mounted on a stake in readiness.

Fig. 3 is a partially broken away perspective view a knot formed by assembling girders on a pile.

4 shows a perspective view of a knot structure at the time of its completion by a Cross brace.

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Fig. 1 shows a sleeve-shaped steel chuck 1, the Body ground and threaded at its two ends - «ad- in the position for insertion into a tubular steel pile 2, the end of which has an internal thread corresponding to that of the casing sleeve having! the interface 3 of this pile is bottomed.

In Fig. 2, a metallic Hing 4 is shown at the moment of its mounting on the lining 1, which is on the tubular pillar or post 2 is attached and screwed on

Via input 4, the cut surfaces 5 of which are ground, has a turned hole, the diameter of which corresponds to that of the chuck sleeve and carries three radial staples 7 that are exactly perpendicular to each other and to the axis of the pile

The staples 7 have a bent and toothed profile 8 and are parallel to the axis of the pole from penetrated a hole 9 *

3 shows the ring 4 pulled onto the sleeve 1 and an identical ring which is symmetrical is arranged for this purpose} a tubular pile or pillar 2 is shown, which is arranged above this ring is"

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In the through, the leeway between the opposite Staples 7 formed open jaws, the ends of the beams 10 and 11 are shown, each are provided with a pin 12 which has a toothed head 13 and is bent into a profile, which corresponds to the profile of the staples.

Each of the heads 13 is penetrated by a hole 9a (only visible on the carrier 11), the opposite of Holes 9 of the staples is arranged, above the bolts 14 are shown, the length of which is sufficient to To penetrate staples and the head of the tenons and to take up a screw nut 14b

The girder 10, which is intended ^{to form a “bank girder 11} (poutre de rive), comprises a pin 12 which is connected to a U-shaped profile part 15 which is reinforced by corner rails 16 at various points.

The carrier 11, which is intended to have a "running Form carrier "(poutre oourante) is provided in the same way with a pin 12 with a profile part 17 of the shape of an inverted V connected at its base by another profile part 18 is completed in the shape of an upright V.

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It is evident that the pin 12 is cut by the two at their ends according to the profile of the pin Planks of the beam could be formed. These two planks, when folded on one, would Strip made of sheet steel would be welded on, which form the bent and toothed front surfaces of the pin

In Pig * 4, a beam tie 19 is shown above a fully assembled scaffolding node is arranged and has a groove 20 on its base which is formed so that it the Staple 7 can cover and which is penetrated by a hole 9b which is within the extension of the holes 9 and 9a of the clamps 7 and the pin 12 is located.

The tie bar has a beveled front surface that is supported by an internally threaded hole 21 is penetrated, into which a transverse tensioning tension rod 22 can be screwed, at each of its ends threads 23 and 24 running in opposite directions

Opposite the other end of the tension rod 22 you can see a collar 25, which is crossed by three, with an internal thread provided holes 21a is penetrated, in which four transverse tensioning rods in diagonal directions are screwable.

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to the corrosion of these metallic elements under the To avoid exposure to atmospheric substances, these have appropriate treatments during their manufacture experienced in order to make them resistant to the attacks of these substances.

In particular, the inner wall of the pile is covered with a plastic, adhesive layer when it is manufactured Material has been provided and the connecting elements of the assembly are galvanized.

In the following, with reference to the drawings, the process of connecting the beams to a Stake to be described.

In Pig. 1, the arrow f1 denotes the displacement to which the putter is subjected in order to place it on the tubular To attach post 2, on which it is screwed in the following.

A key is used for this purpose and in order not to damage the ground outer surface of the putter 1 provided, which consists of two semi-cylindrical jaws that can be inserted into the interior of the putter and are articulated on an eccentric cam connected to a lever ;.

The actuation of this lever has the purpose of attaching the clamping jaws between the inner wall of the putter

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with sufficient pressure to allow the putter to be screwed onto the stake.

Finally, as can be seen from Pig * 2, the Ring 4 screwed onto the putter by the sliding movement indicated by the arrow f2

You will notice the smooth finish of each other contacting side surfaces and the cut surfaces of the pile and the ring makes sliding movements easy and allow these elements to freely relate to one another "

If you now turn to Pig 3, you can see the lower ring of the knot connected to the lower pole

Finally, the head of the pin of each support 10 or 11 is inserted into the recess of the corresponding one Krampe, as indicated by the arrows f3 »f4 and · f5 is. Then the ring arranged opposite the chuck 1 is pulled onto the latter (arrow f6); the Staples of this ring come into engagement with the serrated, upper surfaces of the carrier pegs.

It is evident that the pin provided at the other end of each carrier is simultaneously inserted into the recess of the staple attached to another post and inserted for this purpose

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It will be noted, however, that the beam is cantilevered could be attached to a post and that accordingly a second post is not necessary in every case.

Then arrange each beam lengthways by inserting a bolt 14 into the aligned holes 9 and 9a the staples and the carrier can intervene. Furthermore it will be noted that the length of the putter is sufficiently large to facilitate the assembly of these elements is to allow two mutually symmetrical hinge 4 to be arranged centrally on his body.

Finally, the top post is engaged with the threaded end of the putter, as indicated by the arrow f7, then screwed to the cut surfaces of the rings 4 and those of the To block stakes as well as the planes of the staples and the tenons in close contact with each other

It goes without saying that in the Palle that no upper post 2 it is provided that the assembly of the knot is completed by means of a suitable screw nut.

You will find that assembling this node was carried out without carrying out checks using a plumb bob or a calibration scale.

It will also be noted that the division of the connecting means of a common node into a

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Guide sleeve, two staple rings and a pin, one easy and accurate manufacture and machining of each of these elements allow the mass production means can be adapted · Overdifference assembly of these elements on the building site quickly and easily can be carried out and enables considerable time savings

Finally, it will be found that the assembly of the elements of a scaffold knot as described above does not involve the risk of damaging the walls of these elements, as does the riveting or welding that is carried out for conventional knots would bring ; this makes it possible to. To ensure protection of the elements for the case of use during manufacture by suitable means.

You will eventually notice that after assembly of the knot of the pin in the clamping jaw is held by a toothing by means of a screw stick, the is formed by the cramps, and that he is not whore simply engages in a common mortise or socket · squeezing the vice ^ This is ensured by screwing the tubular pawl 2 onto the putter 1.

It is obvious that the clamping of this vice is intensified on tsh df! Forces "from the upper- ~ ο ί-ΰΰ αϊ arxeionX rfe.rioilriouä'X'i ^ -zsax * ^ wtfr ^ Äriü.snr :; 809812 / 0997

half of the knot, but it must be made clear that it is not these forces, the intensity of which may change temporarily, that determine the cohesion of the knot, which consists of mutually independent, stacked elements, but that it is the constriction is due to extension that occurs on the chuck 1, as well as the cut surfaces 3 of the post and the cut surfaces 5 of the rings come into close contact as a result of the screwing of the post "Dynamometric ¹¹ key or the like. Used,

In addition, one will notice that the cohesion of the elements of the knot is attributable to the honed nature of the contacting surfaces. For this reason, this contact is firm and intimate and therefore allows them to lie freely on top of one another with the purpose of ensuring a regular distribution of the forces absorbed.

The pin, which is constrained in its clamping jaws in this way, thus transmits the pin received by its carrier Forces on the stake.

In this context it should be made clear that the inclination of the surfaces in contact with one another

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Staples and the pin head is not arbitrary, but on the contrary is exactly perpendicular to the forces, which are transmitted through the pin to the post, so that these forces act like a pressure. In this way any tendency of these surfaces to slide against each other is avoided and the connection is characterized by the perfection of insertion.

If one finally turns to the Pig · 4, one can imagine that the one shown in this figure Cross bracing device allows to unite four nodes arranged in the corners of a rectangle, to transfer the oblique forces to which they are subjected to each other

It is to be understood that the present invention is in no way limited to the embodiments of the above description Exercise is limited, but on the contrary, all modifications within the scope of the professional ability includes. In particular, the piles can be formed by any classic profile in which at least one end is connected to a socket or tubular member that fits onto one of the ends a putter or a sleeve.

It is evident that the cross-section of the staple rings and the bushings that are intended to be applied to the putter being raised is the same as that of this putter

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In addition, the discs, plates or the like can. any Number of staples, brackets or the like. wear that include different angles with each other. These multiple staples, brackets or the like. can become a be combined unitary plate, which has a channel whose profile is that of the one described above Cramps corresponds to; the pegs and their heads accordingly have curved surfaces that have the arch shape correspond to the gutter.

These clamps can be inclined in the same way to the main tube axis.

Finally, the made of different material, perform a different puncture on the pipes assembled on the putter than on a stake? in particular they can represent an inclined part of the framework.

In all cases the profiles are the staples and the Pin obviously functionally adapted to the forces transmitted from one of these parts to the other, as it is set out in the gate.

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Claims (1)

AS Pat entans checks J Joining device for joining beams on the pile of a structure using a pile is formed by two tubes arranged coaxially and one below the other, which are united by means of a longitudinal mandrel mounted on opposite ends of the pipes and secured with interposition of two discs, plates or the like. between the frontal cut surfaces of the pipes, which are intended to to hold the ends of the beams firmly between their opposing faces after they are secured, thereby characterized in that the fastening means provided on each end of the stem allow the mandrel to be opened to be fastened to the end of each tube in such a way that the tubes sit on the washers and plates or the like. support while the mandrel is loaded by a tensile force. 2 connecting device according to claim 1, characterized in that that the mandrel has the shape of a sleeve to allow circulation between the aligned Allow pile pipes. 3. Device according to claims 1 and 2, characterized in that that the holding means on the periphery of the discs, plates or the like. from a circular ring Rinne so that on the ends dsr Ur ag he one by the pressing together of the Soheiben, plate or the like. resulting axial pressure caused clamping effect 80 98 12/0997 4. Device according to claims 1 to 3 »characterized in that that the slices, plates or the like. reduced to radial arms with large recesses between these arms are. 5. Device according to one of claims 1 to 4, characterized in that the surface of the transverse grooves the arms intended for support against the corresponding surfaces of the girder ends exactly perpendicular to the resulting The forces exerted on the pile by the girder during installation. 6. Device according to one of claims 1 to 5, characterized in that the rear surface of each arm runs perpendicular to the longitudinal axis of the pipes in order to serve as a seat for a transverse tension abutment. 7. method of mounting girders on piles, which are formed from tubes, the length of which corresponds to the length of the storey of a construction to be erected, wherein the ends of each pipe to be assembled are fastened on a mandrel which itself is attached to the end of the pipe In-place tube is attached after being pulled between the frontal faces of the tubes on the mandrel discs, plates or the like. have been arranged, which are intended to be pressed towards each other to clamp the ends of the beams during the fastening of the tube on the mandrel, characterized in that that the slices and plates are pushed towards each other 809812/0997 or the like. is continued until the thorn begins an Einohnürung due to extension. 809812/099 7