FI92180C - Spacer for fixing elevator cables - Google Patents

Description

92180 <

INTERMEDIATE BEAM FOR ATTACHING ELEVATOR GUIDES

The present invention relates to a selector beam according to the preamble of claim 1 for fastening elevator guides.

Intermediate beams are used in the elevator shaft, e.g. to divide the gap into two or more sections, each with a different elevator car guided by guides attached to the intermediate-10 beams. The guides attached to the beam bars can also be used in connection with counterweights or when fitting an elevator car to an oversized elevator shaft.

The fastening of elevator or counterweight guides to the beams is usually done by welding, using different rods and / or plates to fasten the vertically mounted guides to the horizontal beams. Accordingly, the fastening of the intermediate beam is done by welding it from its ends to the fastening shelves in the opposite walls of the elevator shaft, or by casting the beam into the wall structure already during the construction phase.

Disadvantages of the known wire fastening methods are the difficulty of obtaining the wires due to the rigid welded joints and the accuracy required by the safety points of the installation work from the welder, who is usually an elevator installer by profession and not an actual welder. In use, the fastening of the guides has to take into account the rather large tolerances of the intermediate beam and the fastening members therein, which prolongs the installation work of the guides. In addition, the difficulty of drawing the welding current to the various weld sites of the shaft, as well as the insufficient rigidity of the structures usually used in welding (e.g. spacers with open cross-sections) against the torsional load and the normal load resulting from the conductor load, can be mentioned. This eventually leads to distortion of the guide line and jerky running of the elevator car. ; 35

One known solution is to weld the C-rail to the back beam at the back. However, this solution does not withstand the sliding forces of the cable fixing nails without additional support. On-site welding is not possible in practice. Manufacturing is also cumbersome to automate 40 da as there are many small parts. This is an expensive method and also requires a lot of waste. In addition, even in this solution, there is a beam with an open cross-section, which is not sufficiently rigid in the strain loads caused by the normal and frictional forces of the conductor fastenings.

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The German reference publication DE 950682 can also be mentioned as a prior art. This reference publication discloses a selection beam for fixing mine lift guides to a shaft. One of the sides of the selector beam 10 is provided with longitudinal elongate openings in the selector beam, the length of which is such that the fastening members used for fastening the guides can be moved horizontally.

The object of the present invention is to overcome the above-mentioned disadvantages and to provide such a baffle for fixing the guides and their supporting structures in the shaft, by means of which the alignment of the guides can be accurately and easily straightened and no welded joints are required to achieve a long installation. The invention is characterized by what is set forth in the characterizing part of claim 1 and what is set forth in the characterizing parts of the other claims.

With the aid of this invention, e.g. the following advantages: 25 - can be halved in the number of cable fastenings in use, as the same cable fastenings can be used in the elevator, regardless of whether the cables stick to the selector beam or to the C-rail in the shaft wall - because the beam is closed, it is rigid at different load sides are freely selectable - narrow beams can be used in small spaces and the height of the beam can be changed to obtain the required tensile strength, as the solution is independent of the beam dimensions 35 - the beam is automated - the beam is cheap because it is lightweight and fastening parts will now be described in more detail by way of example with reference to the accompanying drawings 3 92180, in which Fig. 1a shows a side view of an elevator cable fastening according to the invention, Fig. 1b shows a top view of the same fastening, Fig. 2a shows an elevator group beam with its fastening structures seen from the front, Fig. 2b shows the same selection beam seen from above, Fig. 3a shows the wall mount of the partition beam seen from the front and Fig. 3b shows the same fastening seen from above.

Figures 1a and 1b show a common embodiment of an elevator cable fastening system according to the invention. Here, the intermediate beam 2 is a beam made of two opposed and welded U-beams such that the intermediate beam is rectangular in cross-section and preferably 20 so that the height of the intermediate beam is greater than or equal to the width of the intermediate beam. During the manufacturing step, the edges of the U-beams are notched symmetrically at the incoming openings and bent inwards at the same angle to each other before joining, so that in the finished intermediate beam the connecting surface 12 between the U-beams 25 is symmetrically halfway between the openings. After joining the U-beams, the arm-female opening 3 is formed between the bent edges slightly inside the side wall of the intermediate beam. In the finished beam, the opening 3 is elongate and longitudinal to the beam so that one of the inwardly bent edges 30 forms the upper edge of the opening and the other of the inwardly bent edges respectively forms the lower edge of the opening. Each intermediate beam is installed in the elevator shaft in a horizontal position and so that the opening 3 is in the side wall of the intermediate beam on the side of the elevator car to be installed in the shaft with respect to the intermediate beam. When the spacer is horizontal, each opening is in a horizontal position.

The inwardly bent edges of the opening 3 are so spaced apart that the T-screw 14, which acts as a fastening member, can fit through the opening. The base of the T-screw is locked on the inside-40 side of the spacer between the upper and lower edges of the opening. it rotates when the wire mounting is tightened with a nut. Correspondingly, the shank and screw part of the T-screw extend substantially horizontally outside the side wall of the v-bar. Each opening normally has two T-screws 14, by means of which a side plate 6 with fastening holes for the T-screws is fastened to the side wall of the selector beam 2. The relative horizontal distance between the mounting holes of the NS is less than the length of the opening 3, in order to allow the harvesting and alignment of the guides during installation and, if necessary, later. The base of the T-screw 14 is rectangular and is placed in the horizontal position in the opening 3 and then turned 90 degrees in place by a pair of yin and pulled back, whereby the bent edges allow the screw 15 to move under the base when turning the nut. When laying and aligning the guides, the steel plate 6 can be moved horizontally as the T-screws 14 slide in the opening 3. This allows the position of the guide 1 to be changed as required. Each steel plate 6 has two fastening and fixing screws 13, respectively, to which the fastening part 4 of the wire 20 is fastened, to which the guide 1 is further fastened in a manner known per se by means of fastening nails 7.

Figure 2b shows how two guides 1 are attached to both sides of the selector beam 2 in an elevator group when there are several parallel elevator cars in the same shaft. The lateral position of the guides 1 on the different sides of the selector bar 2 is freely selectable. This is hyotyM if, for example, due to the dimensions of the second elevator car, the guides cannot be at the same point on different sides of the vSlipar. In the case shown in Fig. 2b, each side wall of the select-30 beam has an opening 3 for the attachment of the guide. Large shafts may have two or more consecutive openings in the vMlipar. Normally, the beam is placed in the elevator shaft with the evenest bottoms at the bottom ylds. In this case, it is also natural that the openings in the selector beams are at approximately the same 35 points with respect to the vertical line, so that the guides can be obtained directly. However, it may be the case that the shaft wall is not exactly straight, so that the selector beams do not come into exactly the same vertical direction with each other. However, this is not a disadvantage in the solution according to the invention, since the guides 40 can be moved laterally in the openings 3.

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Figures 3a and 3b show the method of attaching the selector beam 2 to the shaft wall. Seen from the top, the U-shaped plate part 10 is fastened to the C-rail 11 in the wall of the shaft 5 with T-screws 9 or alternatively with drill bolts directly to the shaft wall 5. The edges of the plate part 10 extend over the side walls of the beam 2 extend above and below the side walls of the selector bar. 10 The plate part has holes for the fastening screws 8 of the selector beam, the mutual vertical distance of which is so much greater than the height of the selector beam that the selector beam fits between the horizontal fastening screws 8 to be inserted in the holes. When installing the selector beam in the shaft, the upper fixing screw 8 is removed, whereby the selector beam 15 2 can be lowered onto the lower fixing screw. Finally, refit the upper fastening screw and tighten both fastening screws 8, which causes the clearances to open. The fastening method is rigid enough.

It will be apparent to those skilled in the art that the various embodiments of the invention are not limited to the examples set forth above, but may vary within the scope of the appended claims. Other edge structures can be used instead of a bent edge, but they require additional work steps. Materials may vary depending on the situation. The bar 2 can also have a different shape. However, the tubular structure is the simplest to manufacture.

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Claims (2)

6,921 80 5 A selection beam for fastening elevator or counterweight guides to an elevator shaft, which selection beam (2) is substantially rectangular in cross-section and is firmly attached at each end to, for example, opposite walls (5) of the elevator shaft, and at least one side of the selection beam (2) is provided with a longitudinal elongate opening (3) of such a length that the fastening members (14) used for fastening the guide are movable in a horizontal opening, characterized in that the selector beam (2) is made of two opposed U-beams so that the openings (3) ) the edges are bent inwardly before joining the U-beams, whereby the bending of both edges is equal and the opening is symmetrical with respect to the joints of the U-beams. A selection beam according to claim 1, characterized in that the upper and lower edges of the opening (3) are bent on the inside of the beam at such an angle that part of the T-screw (14) supporting the opening extends beyond the beam to the base of the T-screw base. dividing the indentation of the opening 25 (3) inside the beam between the bent edges so that the T-screw does not rotate. 30 35 40 11 7 92180 5