PT91770B - SUPPORT FOR BALUSTRADE ON SCAFFOLDING - Google Patents

Abstract

Attached to the pole (31.1) of a scaffold is a small wedge box (33), in the insertion space of which either one tab or two tabs (35) of railing bars (34) can be inserted. A wedge (65) which is displaceable and swivellable on a bolt (70) has an elongated hole (75) and an outer pressing surface (78) which is located at an appropriate wedge angle thereto and at the top end of which a lifting cam (97) is formed. The mounting and outer contour of the wedge (65) are selected such that insertion clearance (92) remains and the wedge can either slip through or be lifted by means of the cam surface (100) or of the lifting cam (97) during insertion. The outer pressing surface (78) and the elongated hole (75) are sufficiently long, taking the wedge angle into consideration, to clamp one tab (35) or two tabs (35) securely. <IMAGE>

Description

DESCRIPTION

The present invention relates to a support for scaffolding balustrades with a small wedge box and an unavoidable wedge supported on it in an oscillating manner.

The scaffolding balustrades are formed, according to DE-PS 27 57 189, with locking tabs that protrude downwards at their ends and can be fitted in the small wedge box. Unforgettable wedges were then foreseen with the wedge device with a sufficient fitting length, which allows to fix, either just one tab, or two tabs, in the same wedge. This already proven provision provides for appropriate support surfaces and separate wedge loss devices. When assembling it must be taken into account that the wedges free the insertion space and are in their possible suspension position. If this is not taken into account, it is necessary for the person doing the assembly to walk on the scaffolding, at a great height, without protection on certain sides, and circumstances to swing the wedge into the suspension position. This is uncomfortable and not always free from danger. The wedges, due to the two grooves, enter a relatively large extension in the working and passage space.

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Other ancient embodiments have small analogous wedge boxes, with a flap that runs transversely in front of the column wall, with tab contact surfaces and a wedge guided on supporting surfaces protruding laterally in the groove space. A new arrangement, according to the utility model DE-GM 87 06 723 - DE - OS 38 01 354 Al, provides that, without any other auxiliary means, a wedge with an elongated hole rests on the thread of a screw. In this case, the outer clamping surfaces on both sides of the wedge are at a different distance from the elongated hole to account for different thicknesses that result from fitting or just one or two tabs. Such a wedge is suspended, in case of doubt, in the false position when a second tab must be fitted. Therefore, it is necessary, before fitting the tabs, to decide whether to fit only one tab or two tabs, having the operator to evaluate the position of the wedge with its sides of different widths, possibly even the distance, in order to to suspend in the respective final position, in order to, if desired, be able to fit a second tab. If the error is to be controlled here, it is in fact necessary to fit the tab, but the wedge will not take the immobilization position. Removing the tabs is also difficult because the wedge in the wrong position partially fixes the inserted tab. To fit the second tab, the wedge must be in an appropriate raised position. It is therefore necessary to manually keep the wedge in an elevated position, and the person who assembles or disassembles the scaffolding only has one free hand for the balustrade. In this arrangement and in this configuration, the large parts of the balustrades can only be assembled by two people. For assembly by a single person, the person must be in a position to assess the correct wedge position in each box, in order to previously place the wedge in each box in the correct position. These requirements are an obstacle to practical operation. Changing the position of the wedge on a high scaffold without the protection of the balustrade is not without taking a certain risk, due to lack of security. The support of the wedge in a single pin, furthermore still threaded, leads to wear2

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very large and very fast and poorly defined conditions of the wedges. The support of the pressure forces applied by the wedge to the tabs and which fix them is made directly on the wall and thus provides little support conditions. The individual tabs of the side walls of the socket to be welded on the supports must be made very stable and aligned very precisely. with the supports, so that a device can be manufactured in any usable way Despite this, there are high loads and peak stress in the corners.

column favorable space

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The patent (the patent application) refers to a group of inventions that are interconnected in such a way that they realize a unique general inventive idea, which consists of structuring, in the balustrade supports of the type mentioned above, the support devices, fixation and support of the wedge and the corresponding elements, in such a way that manufacturing and use is improved, with the formation of the wedge and the support of the resulting forces being improved and optimized.

object of the present invention is to provide a support for balustrades and scaffolding of the type mentioned above with a support and wedge device that allows the balustrade to be fitted without touching the wedge, in any position of the wedge and in which additional measures are foreseen. wear reduction and to increase stability as well as simple and safe manufacturing.

The first part of the group of inventions essentially aims to provide an improved wedge structure.

To solve this problem, the following characteristics were envisaged:

- scaffolding has vertical columns;

- small wedge boxes are attached to the columns at determined heights, each with at least one slot open upwards;

-the balustrades have locking tabs that can fit into the locking spaces of the small boxes, protruding downwards;

ÍCBBUU each of the fitting spaces and limited by side walls;

- in the area of the column wall, a tab contact surface is formed;

- on the face is the external space, opposite the contact surface of the tab, a wedge support is provided;

- the wedge support has slit walls that are connected with the side walls and that define a slit between themselves, which are connected radially in relation to the column, and open to the slot and up, down and out ;

the slit walls are crossed by a horizontal peg and perpendicular to the axis of the column;

for clamping at least one of the balustrade tabs, a wedge is mounted on the wedge support, as a possibility of sliding and oscillating;

- the wedge has an elongated hole, through which the pin extends;

- the wedge has at least one outer clamping surface that will abut against the outer wall of the respective balustrade tab located externally;

- an inclination angle is formed between the outer clamping surface and the reference line of the elongated hole;

- the length of the elongated hole and the outer clamping surface as well as the angle of inclination are adapted to the thickness of the tabs and in such a way that, with the same top and outer clamping surface, it is possible to selectively tighten a tab or two tabs against the contact surface of the tabs;

the outer contours surrounding the ends of the elongated hole have a distance from the axis of the pin which is less than the distance between the axis of the pin and the abutment surface of the tabs, minus twice the thickness of the pin of the balustrade;

- in the area of the upper end of the outer clamping surface in the position of the fixed wedge, a lifting cam is formed;

- the surface of the outer contour opposite the outer clamping surface extends to a higher point at a distance from the reference line of the elongated hole which is less than the distance between the middle of the pin and the abutment surface of the tabs, less twice the thickness of the balustrade tabs or the wedge and is formed in the form of a double wedge, with two lifting meat, symmetrical in relation to the midpoint between the ends of the elongated hole.

Due to the fact that the outer shape maintains well-defined and optimized conditions, both in terms of the length and the position of the elongated hole in relation to the outer contour and the wedge is suspended in any extreme position, it is possible, without having to pick it up, fit either a tab or two tabs simultaneously or two tabs one after the other. The wedge can then be brought into the clamping position without hindrance and fixed in that position. With the wedge loose, it is possible to raise the tab without getting caught in the wedge, thanks to the referred choice of its shape. The measures taken are also surprisingly simple and guarantee a considerable simplification of the assembly without any increase in manufacturing costs.

of the balustrade the assembler is not a balustrade

The safety in the assembly and disassembly is considerably improved by the fact that you need to walk unsafely through to a point of the railing to check and possibly correct its position. Due to the release of the grip during disassembly and assembly, only one person is required to perform this work.

To solve the problem of giving the contour of the wedge a configuration such that the wedge does not hinder the fitting in any position, does not prevent extraction in the loose position and, despite this, allows the secure fixation of one or two tabs, there is the choice of the dimensions, angle and shapes of the contour, two principles of solution, namely that of choosing the contour in such a way that in each case the substantial end of the wedge allows or the introduction of the wedge between the support and the abutment surface of the tab or the inserted tab, or that the suspended wedge, when fitted, is moved by an appropriate control meat arrangement such that no noticeable restoring force is generated at the time of extraction. elevation.

The principle can then be used twice

We do not then need any conditions of threading through a space. This leads to a symmetrical wedge or the conditions of threading can be maintained at one end and the conditions of elevation at the other. This leads to an asymmetric wedge that has a pressure surface on the tab only on one side. Both slightly different configurations according to the two possibilities solve one and the same problem.

By means of the rational structure of the protrusion into the fitting space, at the bottom, totally independent of the raised wedge projection suspended to be or not already fitted a tab, when the fitting moves automatically to a partially elevated position, without acting on the action wedge itself. Thus, a person can insert either a tab of the balustrade or, after having inserted a balustrade tab, insert the second without having to use one hand to fix the wedge. After that, the wedge is moved from its partially oscillated position upwards to the suction position, or possibly fixed with the After the release, the wedge may, downwardly hit with a hammer, like the other wedges, not be handled by one person.

wedge hindered and

When the wedge has a symmetrical outer configuration, forming a double wedge, and then the dimensions of the wedge angle, the length of the elongated hole and the external pressure surface and its distance from the reference line of the elongated hole are adapted. in such a way that the wedge has the same elevation in both possible positions, which it allows to selectively fix one or two tabs, it is not necessary, when assembling, to bring the wedge to a determined position, being only necessary, to fix it, oscillate up.

Appropriate configurations of the walls that surround the reception space for the formation of the small wedge box are the object of other claims and of the description of the figures, providing the configuration in one piece, with a flap on which the back of the tab is formed, a large support base and a small oscillation inclination. The groove can be appropriately defined according to the thickness of the wedge.

The quality formations of the wedge boxes of this type, until now, had a special surface to receive the force of the wedge, as in the patent DE-PS 27 57 189, or supporting surfaces that protrude to the sides, on the wedge, which rest on bounces. Both solutions led to relatively small specific pressures. When passing to the wedge that runs the wheel, convenient for the conditions considered above, a support of the forces of the wedge results in a pin. In this way, the specific pressures, in the case of a simply linear contact, possibly only on a threaded bridge, become so great that the wear of the pins and the wall of the elongated wedge hole must take considerable values in a short space of time. time. Providing here a remedy for a wedge that oscillates the turn, completely regardless of whether it is a symmetrical or asymmetric wedge or possibly a wedge that does not have any elevation shoulder, is also the object of the other part of the group of inventions. For this, using the following characteristics of claim 1:

- scaffolding has vertical columns;

- in the columns small wedge boxes are fixed at certain heights, each with at least one slot space open upwards;

- the balustrades have locking tabs that can fit into the locking spaces of the small boxes, projecting downwards;

each of the fitting spaces is limited by side walls;

- in the area of the column wall, a tab contact surface is formed;

- on the face of the fitting space located outside, opposite the contact surface of the tab, a wedge support is provided;

the wedge support has slit walls which are connected with the side walls and which define a slit between themselves, which are connected radially in relation to the column and open to the fitting space and upwards, downwards and outwards;

- the slit walls are crossed by a horizontal pin and perpendicular to the column axis;

for clamping at least one of the balustrade tabs, a wedge is mounted on the wedge support, with the possibility of sliding and oscillating;

- the wedge has an elongated hole, through which the pin extends;

- the wedge has at least one outer clamping surface that will abut against the outer wall of the respective balustrade tab located externally:

- an inclination angle is formed between the outer clamping surface and the reference line of the elongated hole;

the outer contours surrounding the ends of the elongated hole have a smaller distance to the pin axis than the distance between the pin axis and the tab back, minus twice the thickness of the balustrade pin;

according to the present invention, the support surface on which the wall of the elongated hole rests on the pin is formed as a flat surface (flat face) and that the elongated hole in the wedge and the remaining parts of the pin have a configuration such that the wedge can swing freely at least to its two suspension positions.

Accordingly, it was then envisaged to provide a larger support surface in the pin and to adjust this appropriately to the width of the elongated hole. Through the larger support surface solutions can be obtained with suitable materials, very good, with little wear and simple to manufacture and assemble, whose details will be referred to

in the additional claims and in the description that will follow of other characteristics, advantages and points of view.

Examples of embodiments and variants of the present invention are described below, with reference to the accompanying drawings, the figures of which represent:

Fig. 1 is a perspective view of a part of a scaffold with balustrade bars attached to small wedge boxes;

Fig. 2, an interior view of a small wedge box with an end of the balustrade bar fitted, with a tab, but without representation of the scaffold column;

Fig. 3, a top view of a wedge box with a cut through the column of the scaffold and a top view of two ends of the balustrade bars fitted together, the small wedge box being made of folded sheet and showing a peg that follows the rotation and with a flat face;

Fig. A, a representation corresponding to fig. 3, with a small wedge box of a light metei and a peg that follows the rotation with two flat faces for a double wedge;

Fig. 5, a side view of a small box in a column without balustrade tabs fitted and with the wedge suspended with a lifting shoulder, in a first embodiment;

Fig. 6, tooth in fig. 5 with a tab a fixed wedge;

a representation corresponds to an embedded balustrade, with

Fig. 7, a representation corresponding to that of fig. 5, two balustrade tabs being fitted, but the wedge not being fixed;

Fig. 8, a representation corresponding to that of fig. 7, with the wedge partially raised, by hand, just before the fixing position;

Fig. 9 is a representation corresponding to Figs. 7 and 8, in which the wedge is in the fixing position, the pieces being, mainly to illustrate the flat face

of the pin, represented cut by a vertical plane located immediately before the wedge;

Fig. 10, a representation corresponding to that of fig. 5, in which the wedge is suspended at its other end, so that the lifting shoulder is in the locking space;

Fig. 11, a representation corresponding to that of fig. 10, in which there is already a tab in the locking space, while the second is only slightly engaged and raises the wedge, due to hitting the lifting shoulder;

Fig. 12, a representation corresponding to that of fig. 11, in which the two tabs of the balustrade are engaged and the wedge is represented in an intermediate position, in which it continues to be manually closed, after having been oscillated by the locking tab and the elevation shoulder slightly higher than in fig. 11 and from which, as the lift continues, it inserts further into the tab, so that it can then be oscillated around the other end of its elongated hole to the wedge retention position;

Fig. 13, a representation corresponding to that of fig. 5 of another variant of a wedge in the form of a double wedge;

Fig. 14, a representation corresponding to fig. 13 in a state in which a tab of the balustrade was slightly inserted into the docking space and partially raised the wedge due to having hit the lifting ledge

Fig. 15, a representation similar to that of fig. 14, in which a balustrade tab is inserted and the wedge is fixed;

Fig. 16, a representation similar to that of fig. 14, in which a balustrade tab is inserted and the second balustrade tab at the beginning of the fitting raised the wedge further;

Fig. 17, a representation corresponding to that of fig. 16, in which the two tabs of the balustrade. are fitted and fixed by the wedge, with some parts, • mainly to illustrate the two flat faces of the pin, cut10 £ 333fflR

by a vertical plane located immediately before the double pin;

Fig. 18, a partial horizontal section enlarged by the line (18-18) of fig. 2, with the pin having a flat face, its remaining configuration and support illustrated in collaboration with a simple wedge and its elongated hole;

Fig. 19, a schematic representation of a wedge with an elongated hole and the support in a flat and rotating support syringe around a support pin;

Fig. 20, a schematic representation corresponding to another variant of embodiment with fixed support pins and the final formation of the elongated hole for rotation;

Fig · 21, a partial representation corresponding to the previous figures of the longitudinal hole and

dowels in support flattened fixed; and THE fig · 22, a representation corresponding tooth a gives fig · 21, in zone of fixing the support pin, without the wedge. 0 scaffolding (30), represented as an example

schematically in fig. 1, has vertical columns (31.1) and (31.2) that are connected by means of horizontal beams (32) that extend transversely. On the column (31.1) located outside the building, two small wedge boxes (33) are attached to the interior faces of the frame, at an appropriate and predetermined height - as is usual in such scaffolding. These small boxes are used for fixing the horizontal balustrade bars (34). The balustrade bars (34) have locking tabs (35) on the ends of the balustrades folded and flattened in the usual manner. These tabs have a width (36) of about 33 mm and a thickness (37) of about 6 mm. From the abutment surfaces (38) they extend down the length (39), down to the end edge (40) cut in the corner. The tabs (35) of the balustrade are fitted in a known manner in the slot spaces (41) of the small boxes (33) opened upwards and here, for example, also downwards. The interlocking spaces (41) are limited by side walls (42.1 and 42.2). The walls late11 —S ^ cmS

(42,1) and (42,2) are connected in the area of the column wall (43) by a connecting bridge (44) which forms a single piece with the same. This connecting bridge (44) is formed adapted in its tubular abutment surface (45) to the cylinder of the cylindrical tubular column.

There are two variants for the embodiment according to figs. 3 and 4. The variant according to fig. 3 and formed as a folded sheet steel piece. In this case, the connecting bridge (44) has a middle stop area (46), formed rectilinear. From this area, two inclined legs (46) are bent more or less tangentially to the wall (43) of the column, at an angle of about 30 °. At its ends, the side walls (42.1) and (42.2) are folded at the corners (48), with a tight rounding, parallel to each other, so that an interior distance (49) results which- as is visible - it is larger than the width (36) of the tabs (35) of the balustrade, corresponding to a considerable clearance for the introduction. The backing area (46) forms the backing surfaces (50) of the (48) on the inner side of the fitting space (41), the small wedge box of two welded joints in

V (51), arranged vertically, with the column (31,1), shown in fig. 3. Due to the chamfered shape, small hollow spaces (52) result.

The variant according to fig. 4 differs from that shown above only in that it is a light metal profile obtained by continuous extrusion, in which the abutment surface (55) of the connecting bridge (44) has an arc circumference configuration. All the remaining elements are substantially the same.

the configurations of the wedge are treated together in the two variants.

In opposition to the abutment surface (50) of the tabs, a support (60) of the wedge is formed. This support has a slit (61), located radially in relation to the cross section of the column, the width (62) of which is greater than the outer width (63) of the elevation of the corrugation (64) of the corrugated wedge (65), of a distance corresponding to clearance tabs. In the corner area (33) it is welded, by means of

So it will be small boxes &, wí „<

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necessary and sufficient, as illustrated in figs. 2 and 3. By means of the wavy design illustrated in fig. 2 of the wedge, dirt is easily removed and good sliding through the crack is achieved.

The definition of the gap (61) is made by the two walls (66.1) and (66.2). These walls are parallel to the side walls (42.1) and (42.2) and are placed deviated inward and connected with the side walls (42.1) and (42.2) through connecting legs (67.1) and (67.2), located perpendicularly between the and limit, outwardly, the fitting space (41). As can be seen, the slot (61) is opened up and down and opened to the side of the slot (41) and out. Thus, the wedge (65), as long as it has the appropriate configuration, can be swung around.

For the support of the wedge (65), a pin (70) is used that crosses the walls (66.1) and (66.2) of the slot and can have any configuration, as described below. The pin (70) extends through the elongated hole (75) of the wedge (65). They collaborate both to absorb the force of the wedge and to protect against wedge loss.

For the wedge (65) it is of interest to consider in principle two embodiments, as shown in figs. 5 to 12 and 13 to 17. In the case of the wedge (65) of figs. 5 (at 12, it is an asymmetrical outer contour with a lifting meat (97), and in the case of the wedge of figures 13 to 17 it is a symmetrical wedge with two lifting lugs (97.1) and ( 97.2) Both forms of wedges have only one elongated hole (75) with a length (76) and a wide one (77), which crosses the flattened wedge.The wedge is preferably made of stamped steel plate or possibly a light metal or a reinforced plastic material, depending on the constitution of the rest of the scaffold and the conditions of use Each wedge has an outer clamping surface (78). This surface extends according to the angle of the wedge (79) relative to the reference line (80) of the elongated hole (75).

. The outer clamping surface (78) is straight. The length (81) of the outer clamping surface (78), as well as the length (76) of the elongated hole (75) and the angle of the inclination of the wedge (79) are, according to a characteristic of the present invention, adjusted each other in such a way that they can be fixed, with the same outer clamping surface (78), or a balustrade tab (35) or two balustrade tabs (35) superimposed on each other.

The reference line (80) extends through the axis of rotation or axis of oscillation of the wedge formed by the axis (90) of the pin (70) and is deviated, in the case of the simple wedge (65), in relation to the median longitudinal axis of the elongated hole (75), the recess value of the flat face (121), in relation to the line away from the pin side of the pin, towards the outer abutment surface (78), as shown in figs. 5 and 9. In the case of the wedge (115), with two lifting meat (97.1) and (97.2) and two flat faces (121) and (141) - as can be seen in fig. 13 to 17 - the two lines come together in a reference line (80).

In the first example of making the wedge (65) according to figs. 5 to 12, the other long outer contour face (82) is conducted parallel to the reference line (80) of the elongated hole (75) at a distance (83), which will be explained in more detail below. The connecting contour (85), which extends in the narrowest area (84) of the wedge (65), from the outer clamping surface (78) to the outer contour surface (82) is made with a radius (87), in its part (85.1) close to the outer contour surface (82). This radius (87) is equal to the distance (83). The seating area (85.2) is made increasing in size continuously up to the transition corner (88) to the outer abutment surface (78).

The distance (89) (fig.3) from the stop surface (50) of the tab to the axis (90) of the pin (70) is adjusted to the thickness (37) of the tabs (35) of the balustrade and to the distance (83) or the radius (87), such that, when two tabs (35) of the balustrade fit together - as shown in fig. 7 - with the wedge (65) hanging down and resting on the end (91) of the elongated hole (75) which is located in the area of the narrower side (84) of the wedge (65), there is no

want back. The distance (89) is therefore greater than the sum of two thicknesses (37) and a distance (83) or radius (87), respectively, so that there is a gap (92) and the balustrade tabs can fitted with contact with the wedge, whether it is a single tab or two tabs placed simultaneously or successively, without any hindrance due to the wedge (65) it can be inserted freely without trapping the tabs (35) of the balustrade with the outer contour surface. On the other hand, the distance (89) is dimensioned in such a way that, in the position of fixation of the wedge (65) (fig. 6 and 9), they can be safely fixed through the outer clamping surface (78), taking into account it counts its length (81) and the inclination angle (79) of the wedge, either one or two balustrade tabs (35).

outer contour (95) of the wedge (65) in the area of the widest side (96) of the wedge and formed with a lifting shoulder (97) in such a way that the outer pressure surface (78) is guided outwards by a distance , which can be seen in the drawings, on the perpendicular taken by the pivot point (102) of the end (103) of the hole elongated to the reference line (80) to the corner (105). Then it is guided to the end (98) of a part of the transition contour (99) constantly with a meat surface (100), the distance (101) from the center of rotation (102) of the end (103) of the elongated hole in the wide part (96) of the wedge larger than the radius (87). A part of the transition contour (99) is carried to the end (104) of the parallel outer contour surface (82). The distances from the center of rotation (102) are then made greater than in the narrowest area in such a way that, when the balustrade tabs fit - regardless of whether it is one or two tabs - the corner (105) of the lifting shoulder ( 97) or the meat surface (100) are found, so that the lifting shoulder (97) oscillates around the center of rotation (102), which coincides with the center of the pin (70) or its axis ( 90), as shown in fig.

11. Thus, although the lifting shoulder (97) is suspended in the slot (41), it is possible to insert the tab (35) and its removal without any problems, and the bars (34) of

balustrade are meanwhile protected against the lateral exit while the assembler, even in an unfavorable situation, goes to the small wedge box (33) and can move the wedge (65) through the middle position according to fig. 12 and the narrowest zone (84) for the tightening position shown in Figs. 6 or 9, respectively. In this position the wedge (65) is fixed, especially from above, conveniently by a hammer blow. With a tap under the wedge (65), from the bottom up, it can be detached. The figures show that the wedge (65), even in the case of two tabs (35) of the fitted balustrade, protrudes downwardly beyond the side walls (42) and the walls of the slot (66) and can therefore be used correctly.

In the case of this asymmetric wedge (65), the reference line (80) does not coincide with the median longitudinal axis of the elongated hole (75), but rather - it is deviated from it by a distance from the flat face (121) referred to later on. pin (70), passing through the axis (90) of the pin (70). Thus, the radius (87) is also guided by this axis (90).

By means of the overall shape or contour of the wedge (65) conveniently chosen and optimized from several points of view, such as lengths, angles, rounding of the ends and the structure of the lifting lug, the operator never needs to swing the wedge before fitting a or two tabs, the fitting being in no way disturbed by the wedge (65), as it has already been brought to the fixing position to immobilize a balustrade bar, according to fig. 6. But in any case there is then a balustrade close to the small box that the operator can hold on to and therefore be safe.

The shape of the wedge so far described uses the principle of allowing a part of the outer contour of the wedge to be inserted when it is not in the safe position. The embodiment example illustrated in fig. 13 to 17 shows small wedge boxes with the same shape, with the same references, but a wedge (115) with central symmetry relative to the midpoint of the reference line (80) between the center of

rotation (102 and that of the end (91) of the elongated hole (75). This wedge has two outer pressing surfaces (78.1) (78.2) and two lifting slots (97.1) and (97.2), whose conditions of the outer contour have the same configuration as in the first example discussed above.

As can be seen from the drawings, when one or two tabs fit into the slot (41), one of the lifting lugs (97.1) or (97.2) is found and the wedge (115) is taken to its partially elevated position. With a simple upward swing, it can be moved to the safety position. Also in this wedge (115) there is no situation in which the fitting of one or two tabs is hindered if the wedge is not in the safety position. The wedge (115) can also be attached and released. It also has the advantage that in any case it is only necessary to swing the wedge upwards, to allow it to go to the safety position.

In this embodiment, the longitudinal midline of the elongated hole (75) and the reference line (80) for the displacement of the wedge (115) and the size of its outer contour coincide, because the two walls of the elongated hole (75) they rest on one of the opposite flat faces of the corresponding pin respectively.

In order to allow the wedge to oscillate and, despite this, correctly and appropriately receive the generated forces, the pin (70) has an appropriate configuration for its support on the walls (66.1) and (66.2) of the slot. The following are examples of the configuration of the elongated hole and for the support.

An appropriate pin structure can be seen clearly in figs. 3, 6 and 18.

The entire clamping force for securing the tabs (35) of the balustrade must be supported by the wall (120) of the elongated hole next to the outer supporting surface (78). To decrease the specific pressure per unit area on the wall of the pin (70) it is provided with a flat face (121) in the support area. This flat face is

between the walls (66.1) and (66.2) of the gap in the gap (61). The pin (70) has a cylindrical support surface (123) close to its head (122) which has a diameter (124), which is equal to the diameter of the support hole (125), taking into account the rotation clearance. At the other end, an additional nut (126) with a support shoulder (127) and a support appendage (128) was provided. The support appendage (128) has the same outer diameter (124) as the support surface (123). The additional nut (126) is pressed against a support surface (129) of the pin (70) on the outer thread of the same (130) so that the head (122) and the support shoulder (131) are located with a small axial clearance on both sides of the walls (66.1) and (66.2) of the slot, so that even if there is dirt on the pin (70) it can rotate on a well-functioning support surface. The distance (133) from the flat face (121) to the line of the opposite outer wall of the pin is less than the width (77) of the elongated hole of a small gap, the flat face (121) being made so deep that, taking into account taking into account play and wear, the pin (70) follows the oscillation of the wedge (65) and that it always rotates correctly on the cylindrical surfaces and appendages (123) and (128) with support holes (125) connected to it walls (66.1) and (66.2) of the gap. Then, the supporting force is also transmitted to the walls (66.1) and (66.2) of the crack with a reduced specific pressure. As can be seen from fig. 18, the thickness (136) of the wedge (65), is due to the corrugated configuration, less than the outer width (63) of the corrugated wedge (65) .. But in this case, the material thickness is adapted to the dimensions of the plate face (121), taking into account the forces generated and adapted to the dimensions of the supporting surfaces on the walls (66.1) and (66.2 of the gap.

In contrast to the wedge supports so far known, dimensioned in an insufficient way, in through dowels, a simple, safe and durable solution is proposed here, which on the one hand makes it possible for the wedge to oscillate in any position and, on the other hand, it allows to withstand, with reduced wear, the clamping forces generated.

The pin shown in fig. 4 shows no more detailed explanations - two planar faces

same distance from the axis (90), being therefore destined to symmetrical wedges (115) with two lifting meat (97.1) and (97.2). Your support has an appropriate configuration.

Another possibility for the support with reduced wear of a symmetrical oscillating wedge (115) or also suitable for a simple wedge on a flat and large support surface (141.1) or (141.2) is shown in fig. 19. In this case, a support cylinder (140) is rotatably supported on a fixed pin (139). This cylinder has a configuration that takes into account the clearance and the width (626 of the slot (61) and rests with rotation clearance in the pin (139). It can then fit and fix a simple and fixed pin through a hole with appropriate dimensions in the walls (66.1) and (66.2) of the slot.

Another variant to withstand the forces of the wedge on a relatively large surface provides, according to fig. 20, an elongated hole, which has at its extremities one (150.1) and (150.1), with a rotation part, respectively hugging angle of more or less 180 °, the radius (151) being exactly equal to the radius outer wall of the support pin (152) to be fixed between the walls (66.1) and 66.2) of the slot. The support rail (152) has a flat face (121). As can be seen, the wedge can be moved to the desired clamping position in the elongated hole (155) across the entire area, so that when fixing one or two tabs by the wedge, there is always a large support surface to support the forces. But if the wedge is in its final position, it can rotate freely due to the shape of the rotating parts (150.1) and 150.2) of the circular part of the elongated hole (155).

Another variant of the support on a large surface to receive the forces fig. 21 and 22.

the wedge is represented in the

In this case, a support pin (160) with a flattened oval profile is inserted into the walls (66.1) and (66.2) of the slot and securely fixed against rotation. For this purpose, a profile hole (161) adapted, oval elongated and oblique, can be provided in each of the walls of the slot.

The fixing of the ends can be done properly by screws, bolts, wedges or the like. The flattened oval profile is dimensioned in such a way that the flat face (121) that serves for the backrest is dimensioned according to the supporting forces, while the two outer end zones have the configuration, for example, of semi-circumference (162) and the intermediate rear transition surfaces (163) are also flat. The outer distance (165) of the two highest points on the circumferences associated with the extreme faces is slightly less than the width (77) of the slot (75).

Thus, the wedge can rest on the flat face (121) - as described above - but also oscillate freely in the area of the ends of the elongated hole, so that it can be used for the purposes described above. Within the framework of the present invention, numerous other forms of support can be realized on an important surface and the free rotation of the wedge at the ends of the elongated hole. The thicker wedge can also be made and the slit walls can be further apart from each other. But the present shape of the small box is optimized in terms of stability, material consumption and dimensions for the problems that appear in practice, especially since neither the outer corners of the small box nor the wedge itself should protrude too much for the work space. of the scaffolding, since the balustrades are fixed to the inner faces of the scaffolding columns and provide favorable conditions for the balustrades and for the scaffolding capacity and thus to achieve the small boxes with their wedges, in the passage of a from one section to the next, they cannot cause any hindrance. Also in this regard, an optimized solution was found in relation to material consumption, the forces generated and the prominence for the structures of the small boxes and the wedges that can be seen in the drawings.

Claims (1)

- I ^a Support for scaffolding balustrades, characterized by: - the scaffolding (30) has vertical columns (31; 31; 1); the columns (31.1) are fixed, at certain heights, with small wedge boxes (33), each with at least one slot (41) open upwards; - the balustrades (34) have locking tabs (35) that can fit into the locking spaces (41) of the small wedge boxes (33), projecting downwards; - each of the interlocking spaces (41) is limited by side walls (42.1, 42.1); - in the area of the column wall (43) an abutment surface (50) of the tab is formed; - on the face of the fitting space located externally, exposed to the abutment surface (50) of the tab, a wedge support (60) is provided; the wedge support (60) has slit walls (66) that are connected with the side walls and that define between them a slit (61) placed radially in relation to the column and open to the fitting space (41) and to up, down and out; - the walls of the slot are crossed by a peg (70; 152; 139; 140; 160) horizontal and perpendicular to the column axis; for fastening by fixing at least one of the tabs of the balustrade, a wedge (65; 115) is mounted on the wedge support (60), with the possibility of sliding and oscillating; - the wedge (65; 115) has an elongated hole (75), through which the cavilla (70, ...) extends; the wedge has at least one outer clamping surface (78.178.2) that will abut against the outer wall of the respective balustrade tab located externally; - an inclination angle (79) is formed between the outer surface of the clamping and the reference line (80) of the elongated hole (75); the length of the elongated hole and the outer clamping surface, as well as the angle of inclination are adapted to the thickness of the tabs in such a way that with the same top outer clamping surface, it is possible to selectively press a tab or two tabs against the abutment surface tabs; - the outer contours surrounding the ends of the elongated hole have a distance from the axis of the pin that is less than the distance (69) between the axes (90) of the pin and the abutment surface of the tabs minus twice the thickness of the pin of the balustrade; - in the upper end area of the outer clamping surface (78; 78.1,78.2) in the position of the fixed wedge, a lifting cam (97) is formed; the surface of the outer contour (82) opposite the outer clamping surface (78) extends to a higher point at a distance (83) from the reference line (80) of the elongated hole (75) which is less than the distance (89) between the middle of the pin and the abutment surface of the tabs, minus twice the thickness of the balustrade tabs or the wedge (115) is formed in the form of a double wedge, with two lifting meat (97.1,97.2) , symmetrical in relation to the midpoint between the ends of the elongated hole (75). - 2 ^a Support according to claim 1, characterized in that the side walls (42; 42.1,42.2) and the connecting bridge (44) of the small wedge box (33) that presents the fitting space (41), bridge forming the abutment surface (50) of the tabs, to be formed in one piece and to be welded on the column (31.1) in the corner area (48) between the bridge (34) and the side walls (42; 42.1,42.2). - 3 ^a Support according to the claims 1 or 2, characterized in that the small wedge box (33) is formed by a profiled cut piece made of a light metal and obtained by continuous extrusion. - 4 ^a Support according to the claims 1 or 2, characterized in that the small wedge box (33) is made from a piece of folded steel sheet. - 5 ^a Support according to claims 1 or 2, characterized in that the small wedge box (33) is made in the form of a cast metal part. - 6 Support according ^to at least one of the further claims, characterized in that the slot (61) defined by walls parallel to each other (66.1,66.2) of the wedge support (60) of the wedge box (33) has a width ( 62) which increases the outer width (63) of the elevation of the corrugation (64) of the corrugated wedge (65) of sufficient clearance, even in the case of dirt, with the side walls (66.1,66.2) of the slot connected by legs connection (67.1,67.2) with the side walls (42.1,42.2). - 7 ^a Support for scaffolding balustrades, in which: - the scaffolding (30) has vertical columns (31; 31.1); - the columns (31.1) are fixed, at a determined height, with wedge boxes (33) each with at least one slot (41) open upwards; - the balustrades (34) have locking tabs (35) that can fit into the locking spaces (41) of the wedge boxes (33), projecting downwards; each slot (41) is limited by side walls (42.1,42.2); in the region of the column wall (43), an abutment surface (50) of the tab is formed; on the face of the fitting space located externally, opposite the abutment surface (50) of the tab, a support is provided Λ ».. _{| f | | f | B | a | T |} - ^ 1 of the wedge (60); the wedge support (60) has slit walls (66) which are connected with the side walls and which define between themselves a slit (61) placed radially in relation to the column and open to the fitting space (41) and to up, down and out; the slot walls are crossed by a peg (70; 152; 139; 140; 160) horizontal and perpendicular to the column axis; for clamping at least one of the balustrade tabs, a wedge (65; 115) is mounted on the wedge support (60), with the possibility of sliding and oscillating; - the wedge (65; 115) has an elongated hole (75) through which the pin (70, ....) extends; the wedge has at least one outer clamping surface (78.1,78.2) which will abut against the outer wall of the respective balustrade tab located externally; - an inclination angle (79) is formed between the outer clamping surface and the reference line (80) of the elongated hole (75); - the outer contours surrounding the ends of the elongated hole have a distance from the pin axis (90) which is less than the distance (89) between the pin axis (90) (70 ..) and the abutment surface (50) ) of the tabs less than twice the thickness (37) of the balustrade tabs, characterized in that the support surface on which the wall (120) of the elongated hole in the pin (70; 152; 139; 140; 160) rests is formed under the shape of a flat support surface (flat face (121,141)) and the elongated hole (75,155) in the wedge (65) and the remaining parts of the pin (70; 139,140; 152; 160) have a configuration such that the wedge ( 65,155), at least it can swing freely to its suspension positions. - 8 ^a Support according to claim 7, characterized in that the support element (pin (70) support cylinder (140)) is rotatably supported with the flat support surface against the slit walls (66.1,66.2) and the width (77) of the elongated hole (75 ) be equal to the distance (133) from the support surface (flat face (121,141)) from the opposite generatrix of the pin (70) or the distance from the support surface (141) including the clearance required for displacement. ^A support according to claim 8, characterized in that the pin (70) has a flat face (121) in the slot area (121) and is provided at its ends with. support surfaces (123,128) at least mostly cylindrical which are supported connected with the pin without being able to rotate and the slot. likely to rotate on walls (66.1,66.2) 10 ^a Support according to claim 9, characterized in that the pin (70) has a fixed head (122), a support appendage (123) and an additional nut (126) which has a support appendage (128) and the support appendages (123,126) are rotatable in support holes (125) in the walls of the slot (66.1,66.2). - 11 ^to Support according to claim 9, characterized in that the pin presenting a head and a shank with attached to it which is cylindrical over a length equal to the external width of the walls of the slot and which has a length that reaches a zone supporting one continuous flat face and an axial safety device is provided that rests on the outer surface of a crack wall. 12 ^a Support according to claim 8, characterized in that the pin (139) is mounted fixed between the walls (66.1,66.2) of the slot and carries in the elongated hole (75) a rotating support cylinder (140) with the a distance from the generatrix of the opposite cylinder or from a second flat surface (141) equal to the width (77) of the elongated hole (75) a flat support surface (141). - 13 ^to Support according to claim 8, characterized in that the bearing pin (152) is mounted fixed in rotation between the walls (66.1,66.2) of the slot and presenting a planar face (121) inclined at the inclination angle ( 79) and the elongated hole (155) has in its narrow areas rotating cylindrical parts (150.1,150.2) whose diameter is equal to the outer diameter of the fixed support pin (152) including the clearance for rotation. - 14 ^to Support according to claim 8, wherein the pin support (160) is formed as oval profile element flattened mounted between the walls (66.1, 66.2) of the slot, which is mounted, according to the tilt angle (79) with respect to the abutment surface of the tab (50) at a distance corresponding to the conditions of the wedge and the width (77) of the elongated hole (75) is equal to the outer distance (165) of the two highest points of the curvatures (162 ) of the support pin (160) including the clearance for rotation. The applicants claim the priority of the German application submitted on September 24, 1988, under the N ^s . P38 32 480.6.