HK1072415B - Mounting element for elevator guide rails - Google Patents

Description

The invention relates to a lift guide rail fastener as defined in claim 1, its manufacturing process as defined in claim 2 and its assembly process as defined in claim 3.

Lifts with cabs are operated in a shaft along guide tracks.

The known sound and vibration attenuating fasteners for guide rails are usually vulcanized rubber buffers between two metal plates, The metal plates are fitted with bolts or bolt holes as required. These fasteners are a support for the guide rails. In order to allow the sequential, movable assembly of several devices or components, an anchor rail has been developed in the further training of these fasteners, which is connected to a metallic support profile by means of a vulcanized rubber cushion.

The construction of these commercially available fasteners has the disadvantage that it is relatively expensive in terms of material and manufacturing.

The requirement for soundproofing in modern housing requires, for example, that essential parts of an elevator system such as guide rails, doors, controls, etc. be fitted with sound and vibration-absorbing fittings, and that these components may not change their position significantly in the event of a fire for safety reasons.

The patent CH 618779 reveals a sound and vibration-absorbing fastening element, especially for high-rise buildings.

In order to prevent the components attached to the anchor rail from changing their position significantly in the event of a fire, the anchor rail is placed within the C-shaped cross-section of the support rail, the profile slits of both rails being opposite each other and the support rail being filled with the cushioning medium up to the height of the profile slit of the anchor rail. The space between the profile slits is provided for a safety plate which is moved by means of a supporting structure supporting the structure and a motherboard with the anchor rail. The movement of the slide between the support rail and the anchor rail is provided for an unobstructed match between the load bearing and the inserted safety bolts.

The above-described fastener has disadvantages.

The fastener described in patent CH 618779 is limited to a component that is wall mounted or cemented, i.e. integrated into a supporting element. The retrofitting of an existing fastener is not possible. It is therefore an external component that must be provided at an appropriate early stage. It can only be attached to an existing supporting element with great effort (e.g. screwed).

The safety plate described in patent CH 618779 also has disadvantages. Since there is a match between the support rail and the safety plate, when a force is applied which tries to lift the match but cannot act on a damper, there is a risk that the damper may detach from the support rail and the anchor rail and thus destroy or render the component inoperable. The solution described in patent CH 618779 can essentially absorb only forces which compress the damper, but not draw or cut.

The present invention now proposes a sound and vibration-damping fastener for elevator tracks which does not have these disadvantages.

A further task of the present invention is to propose an improved sound and vibration-absorbing fastener for elevator tracks which is more cost-effective to manufacture, meets the safety requirements in the event of fire and can also absorb traction forces.

A further purpose of the present invention is to propose a method of mounting a sound and/or vibration-damping fastener for elevator rails, which allows for precise tuning to the frequencies to be absorbed and which makes the insulation easily and precisely adapted to the frequencies to be absorbed.

The solution to these problems is according to the invention for the aforementioned fastener according to the characteristics of the characteristic part of claim 1 and 2 and for the aforementioned assembly method according to the characteristics of claim 3.

The benefits of continuing training are defined by the dependent requirements.

The anchorage according to the invention is a sound and/or vibration-damping anchorage for elevator tracks consisting of an anchor rail connected by means of a damping medium to a support rail in which the anchor rail, which is designed to carry the elevator tracks, is arranged in a longitudinal position parallel to the longitudinal extension of the support rail embedded in the damping medium. The longitudinal extension runs largely parallel to the direction of travel of the cabin in the shaft. The anchor rail and the support rail are separated by at least one slit and this slit is filled by the damping medium.

Damping medium is a material characterised by a significantly higher coefficient of sound and/or vibration damping than that of steel or aluminium.

A slit is the space enclosed between two opposite L-profiles (see Figure 2).

The advantage of the invention is that the vibration-insulated anchor rail is resistant to the carrier rail in all directions. This is achieved by the damping medium-filled slot between the anchor rail and the carrier rail. A damped bolt or bolt can completely prevent a component failure. Only definable maximum shear forces can then occur, which cannot be replaced by a displacement of the rubber or damping medium between the carrier rail and the anchor rail. Forces in the x-, y- and z-axes, as well as torques, can be absorbed and damping accordingly, i.e. the torque in the direction of the torsion profile in the light (axis), in both axes (axis) and in the y-axis (axis).

A further advantage of the invention is that the whole unit can be integrated into a component or on a component.

The advantage is that materials that can be vulcanized or cast can be used as rubber or as a dampening medium.

It is also advantageous that a wide variety of attachment options are possible with threads of different sizes and even pin holes, etc.

It is also advantageous to make the fastener cut out of a long rod produced as a meterware as required.

It is also advantageous to cut and mount the fastener in such a way that its length is adjusted to the frequency to be absorbed.

The invention is described in detail below on the basis of the drawings of the examples of execution.

Show it Figure 1a lifting guide mount according to the invention, in schematic form;Figure 2the mounting element for lifting guide rails according to the invention.

The same or similar design elements are given the same reference marks in all figures, even if they are not shown in the same detail. Figure 1 shows an overall system. The lift guide rails 30 are attached to the shaft wall 20 by the mounting bracket 40 A mounting element 10 is inserted between the shaft wall and the mounting bracket to dampen sound and vibration.Figure 2 shows a mounting element 10 according to the invention.

A carrier rail 1 consists of a base plate 1.1 and two L-profiles 1.1. carrier rail 1 is filled with a dampening medium 5 which is preferably made of a cast plastic of elastomer or rubber. in the dampening medium 5 an anchor rail 2 is embedded parallel to carrier rail 1. anchor rail 2 also consists of a base plate 2.1 and two L-profiles 2.1, with the L-profiles of carrier rail 1 and of anchor rail 2 facing each other and carrier rail 1 filled with the dampening medium 5. the dampening medium may be fully filled with the carrier rail 1 but may also be filled with hologram. in between carrier rail 1 and L-profiles filled with the mold.

The space enclosed between the two opposite L-profiles 1.2 and 2.2 (see Figure 2) forms a slit 6.

This slot is so designed that the vibrations produced by the guide rails 30 cannot be transmitted to the shaft wall 20.

In the event of destruction of the damping medium 5, e.g. in the event of fire, the guide rails 30 fixed to the anchorage rail 2 and the anchorage bracket 40 may, because of the low angle of anchorage rail 2 in the support rail 1, only slightly alter its position without affecting its function.

The support rail 1 is typically fitted with anchor bolts from holes 3 to M16 and anchor rail 2 is formed with several threaded holes from holes 4 to M12 to accommodate the guide fixtures to be insulated.

The two profiles 1 and 2, which consist of pressed or rolled steel profiles or edged sheet profiles, are separated by the damping medium 5, e.g. vulcanized rubber. The shape of the two profiles 1 and 2 is chosen in such a way that there is in principle a form closure and the slot 6 is formed. The distance between the two profiles 1 and 2 is in the unloaded state of about 3 - 5 mm and varies by the stresses that can arise from the pressure of the guide shoe and the insulation of the damage (through blast forces).

The fastener 10 can be produced as a meterware/bar material and then lengthened as needed, thus being precisely adapted to the needs: the shorter the softer/absorbent; the longer the stiffer/hard, thus making the production cost-effective.

The length or number of fasteners 10 allows precise tuning to the frequencies to be absorbed and the insulation can be easily and precisely adjusted to the frequencies to be absorbed.

The longitudinal extension is defined as parallel to the direction of travel of the lift cab.

Depending on the use, lengths of 250-500 mm are provided. The longitudinal extension is much larger than the lateral extension. The thickness of the complete units is 45-55 mm, so that the surface compression p does not fall below or exceed the ideal values of 0.25 < p < 0.40 N/mm. The hardness of the damper elements should be in the range of 50-70 Sh A, so that the systemic springing cannot exceed the value of 3 mm.

The following components have an influence on the system and their pathogen frequencies (at VKN = 1.0 m/s) are partially known: Other

Hubmotor (1000, 1500 und 1950 prm bei VKN = 1.00 m/s)	990, 1290/1309, 1850
Schneckenwelle (Zahnfrequenz Übersetzungsverhältnis)	2970, 2580/2618, 5550
Treibscheibe ⌀ 320 mm	60
Tragseile ⌀ 8 mm	26112
Geschwindigkeitsbegrenzer (GBPD), Seilscheibe ⌀ 200 mm	95
Geschwindigkeitsbegrenzer (GBPD), Begrenzerwippen (8 Nocken)	764
Begrenzerseil	14688

The geometry or hardness of the damping elements is determined by measuring the vibration or force in the x, y and z directions.

The rule of thumb is: insulation area ≥ √2 x source frequency (Fixed formula); the damping element's intrinsic frequency shall be at least 40% of the source frequency.

The specific frequency fe of the damping element can be calculated, for example, by the following approximate formula: $f_e=\mathrm{½\pi }*\surd \left(C,/,m\right)$ where m is the mass of the guide rail between two successive anchorages and C is the linear stiffness of the anchorages.

The length l of a fastener to dampen a given frequency of the agent can thus be determined clearly.

The length of the fasteners can be determined by, for example, a work step/cut-off.

The manufacture may be carried out with drawn or edged base profiles.

But you can also operate with dented or lasered and then edged small parts.

It is also possible to use standard profiles, which would then have to be machined.

The fastener 10 can be obtained and processed by the simplest means, without the need for elaborate, preformed insulators, and with the use of commercial rectangular profiles.

In a cost-effective preferred embodiment, the dampening medium is a cast plastic.

The advantages of the invention are, on the one hand, the safety of fastening the components in the event of fire or heat exposure and, on the other hand, the low cost of manufacture. The proposed elastomer/rubber cast plastic, e.g. polyurethane, combines well with sandblasted steel, is oil resistant, ozone resistant and more resistant to aging than the known fasteners equipped with vulcanized rubber dampers.

Other suitable materials, which are more economical, can also be used as dampening media.

Claims (5)

1. Sound-damping and/or vibration-damping fastening element (10) for lift guide rails (30), consisting of an anchor rail (2), which consists of a base plate (2.1) and two L-profiles (2.2) and which is connected by means of a damping medium (5) with a support rail (1), which consists of a base plate (1.1) and two L-profiles (1.2) and in which the anchor rail, which is intended to support the lift guide rail, is arranged to be embedded in the damping medium (5) and to extend parallel to the longitudinal extent of the support rail (1), and the L-profiles (2.2) of the anchor rail and the L-profiles (1.2) of the support rail (1) are disposed opposite one another and spaced apart by at least one slot (6), characterised in that this slot is completely filled by the damping medium (5) up to the height of the L-profiles (1.2) of the support rail (1).
2. Method of manufacturing a sound-damping and/or vibration-damping fastening element (10) for lift guide rails (30) according to claim 1, characterised in that the fastening element (10) is cut according to requirements from a long bar produced as piece goods.
3. Method of mounting a sound-damping and/or vibration-damping fastening element (10) for lift guide rails (30) according to claim 1, characterised in that the L-profiles (2.2) of the anchor rail (2) are mounted on the L-profiles (1.2) of the support rail (1) to be spaced from one another by at least one slot (6) and that this slot is completely filled by the damping medium (3).
4. Mounting method according to claim 3, characterised in that length of the fastening element is tuned to a frequency to be absorbed.
5. Mounting method for lift guide rails, characterised in that the lift guide rails are mounted on fastening elements according to claim 1.