FI83992C - Device for interconnecting vertical and horizontal elements - Google Patents

Description

83992

Device for joining vertical and horizontal elements together

The invention relates to a device for connecting vertical and horizontal elements, in particular tubular elements, to scaffolding and the like.

Devices are already known in which the vertical elements 10 have rings, sleeves or the like for receiving hooks in the horizontal elements, in which case additional wedges are required for fixing the connection. Such devices have been shown e.g. DE-AS 1684219, SE-385,487 and EP-24865.

However, these known devices have the disadvantage that the joint does not become sufficiently strong and, above all, these known devices cannot accept to a significant extent the torques to which the scaffolding or the like is subjected.

WO 81/01164 discloses a structure with which a greater degree of stability can be achieved. 25 However, the structure in question is quite complex and difficult to manufacture, requiring, for example, two separate fastening elements.

It is therefore a primary object of the present invention to provide a device which does not have these drawbacks and which, moreover, can be made sturdy and easy to move while still being relatively low cost.

In order to achieve these and other objects, the invention has the features set out in the claims.

2 83992

An accompanying embodiment of the invention is shown in the accompanying drawing. In the drawing, Fig. 1 shows a side view of a part of a vertical element belonging to the device according to the invention in the first orientation position, Fig. 2 shows the device according to Fig. 1 in the initial mounting position, Fig. 3 shows the device according to Fig. 1 fixed and locked and Fig. 4 perspective view.

In the drawings, reference numeral 1 generally denotes one element, e.g. a vertically arranged column 20, intended to be connected to a substantially horizontal element, generally indicated by reference numeral 2. Elements 1 and 2 are usually scaffolding or pipes for the like.

25

As can be seen from the drawing, the vertical elements have a plurality of annular or sleeve-like parts 3 arranged at the desired joints. These parts, hereinafter referred to as rings, are usually welded to the vertical elements and are intended to interact with the coupling device according to the invention, generally indicated at 4.

This coupling device comprises a hook member 5, which according to Fig. 4 has a top wall 6, one end of which projects at a right angle downwards from the gripping part 7 and from the other end of which a downwardly extending wall 3 83992 protrudes, forming an acute angle with the top wall and joining parallel to the top wall 6. to the bottom wall 9.

5 The top wall is provided with a continuous, elongate opening 10 with a side extension 11 for a purpose to be described later.

An opening 12 parallel to the opening 10 is made in the lower wall 9, which starts from the free end of the lower wall 9.

As can be seen from Figures 1-3, the hook member 5 is attached at one end to the horizontal element 2, preferably by welding.

15

The second part of the coupling device, generally indicated by reference numeral 13, is formed by a specially shaped wedge having an upper side surface 14a and a parallel lower side surface 14b parallel thereto. Between these 20 surfaces there is a recess 15 on the left side of the wedge image, bounded by an oblique surface 16 emanating from the lower surface 14b, which in turn joins an inner surface 17 parallel to the surfaces 14a, 14b spaced from the plane 14a and 25b corresponding to the distance mainly the distance between the outer surface of the element 1 and the outer surface of the sleeve 3.

The right side 18 of the wedge forms a functional oblique surface of the wedge 30 and the wedge is formed as a mating surface 19 at the upper end.

Protruding from the wedge in two opposite directions are two pins 20, 21 which, according to Figures 1 to 3, are arranged in an oblique position 35 on top of each other and at a distance from each other which is greater than the strength of the upper wall 6 of the hook member 5. Their purpose will be clarified later.

4 83992 The device described here operates as follows.

In the initial position, the wedge is located in the upper, free position 5, where it, due to its own weight, enters the slightly oblique position shown in the drawing. The center of gravity of the wedge is located so that in the upper position shown its upper pin 20 rests against the upper side of the wall 6 and its lower pin 21 against the lower side of the wall 6.

Namely, the pin 21 is located on the side of the wedge which is not at the side extension 11 of the opening 10 and in the position shown the pin 20 is located at said side extension 11.

With the wedge in this position, the horizontal element 2 is brought into the orientation position shown in Fig. 1, where the side opening of the hook member is located at the ring 3 of the vertical element, after which the horizontal element is pushed to the left so that the gripping part 7 and / or the wall end 9 abuts the vertical element 1. in the position the coupling takes place by lowering the horizontal element, whereby the gripping part 7 moves into the space between the ring 3 and the vertical element (see Fig. 2).

25

In order to ensure the locking wedge 13 is merely pushed or keikautettava somewhat in the direction shown two in the direction of arrow upper pin 20 to move the hook member side in the extension 11. The wedge now slides 30 by its own weight as shown in Fig 3 to the position and tapping with a hammer or a similar die, against the surface 19 provides a firm coupling between the parts .

35 Since the wedge 13 is partly guided in the opening 10 or 12, respectively, the width of which must, of course, be approximately equal to the thickness of the wedge, and partly against the vertical element 1 both above (surface 14a) and below (surface 14b) and the hook wall 8 (surface 18), a strong and non-rotating joint is obtained.

5

Detaching the joint is, of course, easy by tapping the wedge upwards and turning it to the initial position in Figure 1. Thus, both connecting and disconnecting the joint is so easy that even untrained 10 workers can perform it.

Embodiments of the device disclosed herein may, of course, vary within the scope of the invention. The definition of a vertical element naturally also includes 15 parts which are integrally connected to said element. For example, if long sleeves are used instead of rings, the wedge does not have to directly affect the vertical element, because the wedge can affect the corresponding surfaces of the sleeve. In some cases, the wedge 20 need not affect the portion of the vertical element above the ring. It is also possible for the pins 20, 21 to protrude in the same direction, whereby the lower pin protrudes more or has a larger diameter than the upper one. 25

Claims (4)

Apparatus for interconnecting mainly vertical and horizontal elements (1, 2), in particular tubular elements for scaffolding and the like, wherein the vertical element has braces, sleeves and the like. (3) intended to be capable of receiving at the horizontal elements (2) fastened hook elements (5) and wedges (13) are arranged for the fixing of the connection, each of the hook elements (5) in addition to one in the respective one. bracket or sleeve (3) from above the insertable engagement part (7), has an oblique wall (8) arranged at a distance from the engagement part (7), which is in the locking and connecting positions outside the bracket or sleeve (3) and against which a the first surface (18) of the wedge (13) may act, the wedge as a whole being outside the sleeve with a portion thereof located between the engaging portion (7) of the hook member and its oblique wall (8), characterized in that the wedge is so. designed to act in the coupling position with a second surface (14a) against the vertical element (1) above said bracket or sleeve and with a third surface (14b) acting against the vertical element below said bracket or sleeve (3). 25 2. Device according to claim 1, characterized in that the hooking element has an upper wall (6) which forms a substantially horizontal, engaging portion (7) and the oblique wall (8) connecting portion, from which its engaging portion (7) is substantially projected. right angle, said intermediate wall (8) forming an intermediate wall (8) formed by the same angular angle (8) in a lower wall (9) preferably parallel to the upper wall, the free end of which lies in substantially the same pane as that of the engaging part. outer surface, that a continuous elongated opening (10) is arranged in said upper wall (6), while a free slot (12) is provided from the lower end of the lower wall (12), and a wedge (13) is provided. is inserted into the latching element (5) and is guided at the top by said opening (10) in the upper wall (6) thereof and the bottom of the slot (12) in the lower wall (9) of the element and the wedge is so designed and dimensioned that a position in an active position shot down in the element will abut with a first surface (18) against the inside of the inclined intermediate wall (8) of the hook element, with a second surface (14a) abutting the vertical element (1) above its bracket or sleeve (3) and having a third surface (14b) adjacent to the second surface abutting the vertical member (1) below its bracket or sleeve (3). Device according to claims 1-2, characterized in that the wedge (13) between said second (14a) and third (14b) surface has a recess (15) which is preferably limited partly by an oblique surface (16) and partly by a said second and third surfaces parallel portion 20 (17) which, in the active position of the wedge, is preferably in contact with an outer surface of the bracket or sleeve (3). 4. Device according to claims 1-3, characterized in that the wedge (13) has two projecting pins, e. (20, 21) of which the upper (20) is so dimensioned or positioned that it can pass through a side recess (11) in the elongate opening (10) of the upper wall (6) of the hook member while the lower (21) is dimensioned or positioned so that it cannot pass through the aperture in question, and the wedge (13) is so balanced as to its center of gravity that it can enter a rest position with its upper pin (20) abutting the upper surface of the hook member (5) wall (6) and with its lower pin (21) abutting the underside of said upper wall (6).