DE29710648U1 - Sectional lift gate - Google Patents

Description

Section lift gate

The invention relates to a sectional lifting door for closing off rooms in larger industrial buildings, e.g. helicopter hangars, aircraft parking hangars and shipyards. The sectional lifting door has a plurality of horizontal door segments, with successive door segments being connected by hinges, as well as a self-supporting frame with lateral guide rails in which the door segments are guided laterally.

A sectional lifting gate is known from DE 3 6 29 846, in which the â&ogr; gate segments are alternately connected to one another by hinges. The gate segments are guided in pairs in side rails and, to open, are rotated by approximately 90° around their longitudinal axis and folded over one another and stored in the gate frame.

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The invention is based on the task of creating a door for room closures of 15-30m clear width and up to 7&tgr;&eegr; clear height, without the need for guide rails or openings in the floor slab, whereby no forces (weight load and wind force) should be introduced into the roof structure of the building.

Munich - Bogenhausen Poschingerstrasse 6

Phone:

+49-89-99 89 04-0 +49-89-98 32 22

Fax (&Pgr;&&Igr;&Pgr; - automatic):
+49-89-98 40 37

Telegram: Chemindus Munich

According to the invention, this object is achieved in that the guide rails have a first vertical section, which, in a lintel deflection, merges into a second horizontal section, which is supported on the floor.

The sectional lifting gate according to the invention enables clear widths of over 15 m and up to 30 m with a clear height of up to 7 m. Gates of this size could previously only be designed as sliding gates with guide rails in the hall floor.

Preferably, the horizontal section of the guide rails is supported at the front end by the vertical section of the guide rail and at the rear end by a support. The guide rails have a self-supporting guide frame and are attached to the sides of the retaining walls and the floor slab. No force is introduced into the roof structure of the hall.

The door leaf itself is divided into two or three segments, the total height of which is slightly more than the clear height of the door system. The width of the segments corresponds to the clear width plus the lateral guide dimension. The individual segments are connected to one another by heavy-duty joints.

The individual segments consist of a base frame that is designed to absorb wind loads in accordance with the static requirements and is stiffened in the horizontal direction by attached wind bars that span the entire width of the segments. When closed, the attached wind bars absorb the wind loads and, when one-third open, the back pressure or suction pressure that can occur. When open (horizontal position), the wind bars carry the weight of the individual door segments.

The two or three door segments are guided to the left and right of the clear opening in a self-supporting frame.

This frame transfers the wind and weight forces into the floor slab. No forces are transferred to the roof structure of the hall.

When opening the sectional lifting gate, it is important that the right and left guides of the frame run synchronously. This can be achieved by two synchronized electric drives, which are relieved by counterweights, or by a hydraulic opening device, which has a hydraulic cylinder with a pump and control on each side. The hydraulic design offers the advantage that an emergency opening of the sectional lifting gate is possible using a hand pump, even in the event of a power failure.

By dividing the sectional lifting door into individual segments, it is possible to minimize the hall height by means of a small lintel deflection. For example, with an opening width LB of 17.5 m and a clear height LH of 6.5 m, the radius of the lintel deflection is only 480 mm.

An embodiment of the invention is explained below with reference to the drawing.

Fig. 1 the gable side of a hall with the closed sectional lifting door;

Fig. 2 the sectional lifting gate in a horizontal section; Fig. 3 the closed gate in a vertical section; and

Fig. 4 shows the opened gate in vertical section.

According to Fig. 1, a sectional lifting gate 10 is installed in the gable side of a hall H, which is divided into three gate segments 12. A wicket door 14 and window 16 are installed in the lowest gate segment 12. The gate segments 12 are connected to one another by heavy-duty hinges.

Each gate segment 12 consists of a stable base frame made of box profile and is reinforced by continuous wind bolts 18. Each gate segment 12 has two wind bolts 18, one along the upper edge and one along the lower edge. The wind bolts are connected with vertical connectors. The attached wind bolts 18 absorb the wind loads when closed, the back pressure and suction pressure that can occur on such a sectional sliding gate when one-third open, and the weight loads of the individual gate segments 12 when open (horizontal position).

The gate segments 12 are guided laterally in guide rails 20. The guide rails 20 are U-profiles that are mounted on cross beams. Each gate segment 12 has a guide roller with a horizontal axis at the top and bottom on each side, which runs in the guide rail 20. Each guide rail 20 consists of a vertical section 22, which at the upper end merges into a horizontal, slightly rising section 26 in a lintel deflection 24. When closed, the lateral guide rollers of the individual gate segments 12 are located in the vertical sections 22 of the guide rails 20. To open the sectional lifting gate 10, the gate segments 12 are pushed upwards by an electric or hydraulic drive, which is of a known type and is therefore not shown in detail, whereby the lateral guide rollers move through the lintel deflection 24 into the horizontal section 26 of the guide rail 20, so that the gate segments 12 lie horizontally between the horizontal sections 26. Only the lower guide roller of the lowest gate segment 12 is raised to the beginning of the lintel deflection 24. This is sufficient, since the clear height of the sectional lifting gate 10 is then free.

The guide rails 20 are self-supporting and are mounted on the hall floor B so that no weight or wind forces are introduced into the roof structure of the hall. The guide rails 20 are also a gate structure, with the front

end of the horizontal section 26 is supported by the vertical section 22, while the rear end of the horizontal section 26 is supported by a support column 28 on the hall floor B. The vertical section 22 and the
Support columns 28 are anchored in the hall floor B. The horizontal section 26 is reinforced by a grid structure 30. To provide support against lateral forces, the guide rails 20 are attached to stable reinforced concrete walls, e.g. hall partition walls or hall outer walls. Counterweights and counterweight guides are provided and in the
Damping elements are installed in the end position.

With electric drive, the sectional lift gate opens
10 via a lifting rope that is wound onto a rope drum. With a hydraulic drive, the door is opened via a hydraulic cylinder with a lower rope deflection. These gate opening mechanisms are well known and are therefore
not described in detail.

Claims (4)

4*« ·••*•■ O•• · · PROTECTION CLAIMS 1. Sectional lifting gate of large dimensions for industrial buildings (H), with a plurality of horizontal gate segments (12), whereby successive gate segments (12) are connected by hinges, and with a self-supporting frame which has lateral guide rails (20) in which the gate segments (12) are guided laterally, characterized that the guide rails (20) have a first vertical section (22) which, in a lintel deflection (24), merges into a second horizontal section (26) which is supported on the floor (B). 2. Sectional lifting gate according to claim 1, characterized in that the horizontal section (26) is supported at its front end by the vertical section (22) and at its rear end by a support column (28). 3. Sectional lifting gate according to claim 1 or 2, characterized in that the gate segments (12) have continuous, horizontally extending wind bars (18) which, in the closed state, bear the wind loads, in the one-third open state, the stagnation and back pressure, and in the open state, the weight loads of the gate segments (12). 4. Sectional lifting gate according to claim 3, characterized in that the gate segments have wind latches (18) at the top and bottom, which are connected by vertical connectors.