DE9422129U1 - Guardrail clamp - Google Patents

Description

Dipl.-Ing. H. FRITZ 98/032

Dipl.-Chem. EL FRITZ 29.01.1998/Si

Patent Attorneys Mühlenberg 74 59759 Arnsberg

company

Müller & Baum GmbH & Co. KG

Birkenweg

5 984 6 Sundern

Guard rail clamp "

-1-

The present invention relates to a guard rail clamp, in particular a

Guard rail clamp used to create temporary 5

Protective railings can be used in shell buildings.

It is known to provide stairs and flat platforms, such as balconies, in shell buildings with devices that have brackets for railing boards. The railing boards inserted into the brackets serve as temporary protection. In particular, the use of protective railing clamps is known, which can be attached to a component quickly and easily because the upper and lower abutments can be moved against each other (for example: brochure no. 28 from Müller & Baum).

A major disadvantage of the known

However, the fact that 20

they can only be installed on stairs or only on flat platforms.

The present invention is based on the problem of

To create a guard rail clamp that can be used to secure 25

of stairs, as well as for securing flat platforms and can absorb the traffic loads that occur.

This problem is solved by a guard rail clamp with the characterizing features of claim 1, the essential property of which is the ability of the lower abutment to pivot relative to the upper abutment around the axis of the upper abutment. The two abutments can thus

against each other so that the lower abutment 35

rests under the sloping underside of a staircase, while at the same time the upper abutment rests on a stair step. The lower abutment can be swiveled to the left or right, so that the guard rail clamp can be attached to the left or right. However, it can also be placed in a non-swiveled position, so that it can be attached to a flat platform.

According to a preferred embodiment of the present invention, the abutments are displaced relative to one another by means of a tubular sleeve which is axially displaceable on a threaded spindle.

¹ ^ According to a further embodiment of the present invention, the pivotability of the abutments is achieved in that the upper abutment comprises a tube which rotatably and captively surrounds a joint tube, the joint tube being

the pipe sleeve is attached.
20

Preferably, collars are attached to both ends of the joint tube, which serve as a stop and as a guide for the tube, which is part of the upper abutment.

According to a preferred embodiment of the present invention, the lower abutment comprises an angle on its upper side which projects beyond the lower abutment transversely to its longitudinal direction in order to prevent tilting of the threaded spindle and the lower abutment about its axis after the protective railing clamp has been installed.

A further advantage of the present invention arises from the ability of the lower abutment to pivot relative to the upper abutment around the axis of the threaded spindle, whereby ^5 structural conditions can be taken into account.

According to a further embodiment of the present invention, a threaded sleeve can be screwed onto the threaded spindle to fix the upper abutment, said sleeve having two lugs provided with holes, wherein the holes can serve to accommodate a tool available on a construction site, such as a carpenter's hammer.

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-4-

Other features and advantages of the invention will become apparent from the following description of a preferred embodiment, in which reference is made to

Reference is made to the accompanying drawings, which show 5

Fig. 1 is a side view of a universal clamp according to the invention;

Fig. 2 is a plan view of the universal clamp in the direction of arrow II in Fig. 1;

Fig. 3 is a section along the line III-III in Fig. 1;

Fig. 4 schematically shows the assembly of the universal clamp on 15

a staircase;

Fig. 5 schematically shows the mounting of the universal clamp on a flat platform.

As can be seen from Fig. 1, the universal clamp comprises a threaded spindle 1 and a rod-shaped railing part 2. A square tube 3 is attached to the lower end of the threaded spindle 1 in such a way that the square tube 3 protrudes approximately vertically from the threaded spindle 1 on one side.

The lower end of the threaded spindle 1 rests on the inner bottom surface of the square tube 3. On the top of the square tube 3, in the connection area with the threaded spindle 1, an angle 4 is attached, which

Square tube 3, transverse to its longitudinal direction, protrudes. 30

This angle 4 has the task of making it more difficult for the threaded spindle 1 and the square tube 3 to tilt around its longitudinal axis after the universal clamp has been installed and serves as an abutment (see also Fig. 4 and Fig. 5).

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A threaded sleeve 5 is screwed onto the threaded spindle 1, which has two opposing tabs 6 (see Fig. 2), each of which is provided with a hole 7

The holes 7 have, for example, a for receiving 5

a tool of suitable diameter such as a carpenter's hammer.

Reference is also made to Fig. 1. A T-shaped tube sleeve 8 with a smooth inner side is mounted axially displaceably on the threaded spindle 1 and connected to an inner joint tube 9, which is received by a second square tube 12, which is connected to the rod-shaped railing part 2. The joint tube 9 is attached as a lateral extension to the T-shaped tube sleeve 8 and has a fixed collar 10, 11 at each of its two ends, which serves as a stop and as a guide. The square tube 12 thus rotatably encloses the joint tube 9 in the area between the two collars 10, 11, whereby the

Square tube 12 axially not opposite the joint tube 9 20

is movable. The rod-shaped railing part 2 is rigidly attached to the top of the square tube 12, protruding vertically upwards. A U-shaped support 13 is attached to the underside of the square tube 12 to increase stability.

(see Fig. 3). In addition, the 25

For reinforcement, a wedge 14 is connected to the top of the square tube 12 and the side of the rod-shaped railing part 2 facing the threaded spindle 1.

On the side of the railing part 2 facing away from the threaded spindle 1, two railing brackets 15 formed from one piece and opening upwards are attached. The railing bracket 15 has a lower area which is firmly connected to the railing part 2 and an upper

Area which is spaced from the railing part 2 to serve as 35

To serve as a support for railing boards 21 (see Fig. 4 and

Fig. 5), whereby due to the relatively large distance between the upper part of the railing bracket 15 and the railing part 2 two railing boards 21 are also attached one behind the other

In addition, the railing part 2 has a downward 5

open railing bracket 16, similar to railing bracket 15, which is attached to a sliding sleeve 17 on railing part 2. Railing brackets 15, 16 are each provided with a hole 18, which serve to accommodate screws or nails with which railing boards 21 can be screwed on.

As can be seen from Fig. 4, to mount the universal clamp on a staircase 19, the upper square tube 12

with the U-shaped support 13 in the corner area on a 15

stair step so that the threaded spindle 1 runs parallel to the stairs 19 on the outside. By turning the joint tube 9 in the square tube 12, the threaded spindle 1 can be brought into an angular position to the railing part 2.

which allows the square tube 3 with the 20

attached angle 4 to the sloping underside of the stairs 19. The U-shaped support 13 of the square tube 12 thus serves as the upper abutment of the clamp and the angle 4 and the square tube 3 serve as the lower abutment of the

Clamp when attaching it. The tilting of the .25

The position of the square tube 3 relative to the square tube 12 is clear from Fig. 3, which shows a section along the line III-III in Fig. 1. In this figure, two tilted positions 3" of the square tube 3 are shown in dash-dotted lines

indicated, for example, in the assembly of the 30

Universal clamp on a staircase 19. By turning the threaded sleeve 5 using a carpenter's hammer or a similar tool available on a construction site, the universal clamp is firmly attached to the

Staircase 19 connected. In the railing brackets 15, 16 35

two or more universal clamps attached in this way

Railing boards 21 can be inserted to secure the stairs according to regulations. The railing boards 21 can be used both, as shown in Fig. 4,

parallel to the top edge of the steps, as well as parallel 5

to the sloping underside of the stairs 19 (not shown). ₍

Fig. 5 shows the attachment of the universal clamp to a flat platform 20. In contrast to the attachment to a staircase 19, here the threaded spindle 1 is not tilted against the railing part 2, so that both are parallel to each other.

Structural conditions may make it necessary to pivot the two square tubes 3 horizontally against each other when mounting the universal clamp on a staircase 19 or a flat platform 20. This pivoting can be achieved by turning the threaded spindle 1 in the

Pipe sleeve 8 before tightening the threaded sleeve 5 20

The dot-dash lines in Fig. 2 show horizontally pivoted positions 3' of the square tube relative to the square tube 12

Claims (11)

-1- Protection claims 1. Safety railing clamp for temporary safety railings in shell buildings, comprising a clamp to be fastened to a component with a lower abutment (3) and an upper abutment (12, 13) parallel to the abutment and displaceable relative to the abutment along a guide, to which a rod-shaped railing part (2) is fastened with railing brackets (15, 16), characterized in that the lower abutment (3) is opposite the upper abutment (12, 13) around the axis of the upper 15 abutment (12, 13) can be pivoted. 2. Guard rail clamp according to claim 1, characterized in that as a guide when moving the upper abutment (12, 13) is a tubular sleeve (8) which is 20 is axially displaceable on a threaded spindle (1). 3. Guard rail clamp according to claims 1 and 2, characterized in that a joint tube (9) as lateral extension on a T-shaped pipe sleeve (8) 25 and the upper abutment (12, 13) is a tube (12) which surrounds the joint tube (9) in a rotatable and captive manner. 4. Guard rail clamp according to claims 1 to 3, characterized in that a threaded sleeve (5) can be screwed onto the threaded spindle (1), by means of which the T-shaped tubular sleeve (8) and the upper abutment (12, 13) can be fixed in a position spaced apart from the lower abutment (3). ! ' -2- 5. Guard rail clamp according to claims 1 to 4, characterized in that the two abutments (3, 12, 13) each comprise square tubes, U-iron or flat iron are.
5 6. Guard rail clamp according to claims 1 to 5, characterized in that the joint tube (8) has at its two ends fixed collars (10, 11) whose outer diameter is larger than the inner diameter of the upper tube (12). 7. Guard rail clamp according to claims 1 to 6, characterized in that the lower abutment (3) comprises an angle (4) on the upper side in the connection area with the threaded spindle (1). 8. Guard rail clamp according to claims 1 to 7, characterized in that the angle (4) projects beyond the abutment (3) transversely to its longitudinal direction. 9. Guard rail clamp according to claims 1 to 8, characterized in that the upper abutment (12, 13) comprises a U-shaped support (13) on the underside. 10. Guard rail clamp according to claims 1 to 9, characterized in that the lower abutment (3) can be pivoted relative to the upper abutment (12) about the axis of the threaded spindle (1). 11. Guard rail clamp according to claims 1 to 10, characterized in that the threaded sleeve (5) has two * has opposing radially formed tabs (6) on the outside, which are provided with holes (7).