FI104815B - Damping system for a lift shaft - Google Patents

Abstract

The invention relates to a damping system for lift shafts 1 in which, at and/or close to the door opening 2 between the floor and the lift shaft, a structure 3, 4 projecting towards the lift shaft has been arranged, in which the air gap t1 between the lift cage 5 and the projecting structure 3, 4 is substantially smaller than the air gap t2 between the lift cage and the wall 6 of the lift shaft. The system comprises a sound-insulating damper 7, which is arranged so as to cover the wall 6 of the lift shaft in an area situated close to the projecting structure 3, 4, which area in a horizontal direction essentially has an extent equal to the width of the lift cage and in a vertical direction extends to a distance remote from the door opening. <IMAGE>

Description

1 104815

Damping system for lift shaft

The invention relates to a coaching system as defined in the preamble of claim 1.

5

More particularly, the invention relates to a coaching system for an elevator shaft wherein a structure projecting towards the elevator shaft is provided at and / or adjacent to the doorway between the floor level and the elevator shaft at which the air gap between the elevator car and the projecting structure is substantially smaller than the wall between the elevator car and elevator shaft.

The structure projecting towards the elevator shaft may be, for example, a plane door and its supporting structures, which are located entirely on the shaft side and protrude in the transverse direction of the shaft. The structure protruding towards the shaft may also be a so-called "upper edge" of the door opening. the upper porch and the threshold at the bottom of the doorway.

As the car travels past such an area where there is a sudden change in air gap caused by 20 projecting structures,. an air strike is generated which produces an annoying sound which * ··· invades the passenger compartment of the elevator car, thereby reducing passenger comfort. The faster the elevator car goes, the * * 1. a louder disturbing sound is produced. This problem has been solved • 1 1.

* · / 25, by arranging a • • · * .1.1-wide panel in the vicinity of the protruding structure, which extends, for example, between two-story • · · V door openings and prevents the formation of an air pocket.

However, making and installing the sheeting is: Y: expensive and difficult. In addition, adding a large steel surface to • 30 shafts can even raise the sound level.

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The object of the invention is to eliminate the above-mentioned drawbacks.

• · t · • · · · ·> · 104815 2

In particular, it is an object of the invention to provide a damping system which prevents air pockets and the generation of distracting noises in an economically advantageous and simple manner.

5

The coaching system according to the invention is characterized in what is set forth in claim 1.

According to the invention, the system includes a sound-absorbing silencer 10 arranged to cover the shaft of the elevator shaft in the vicinity of the projecting structure in an area extending horizontally substantially equal to the width of the elevator car and vertically at a distance away from the door opening.

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An advantage of the invention is that the noise problem caused by the sudden change in the air gap can be eliminated in an economically advantageous way. As a damping material, it is possible to use conventional sound-absorbing materials or structures used in the construction industry, e.g. commercially available insulators, which are inexpensive and easy to install.

In one embodiment of the system, the silencer is formed of a sound absorbing material.

In one embodiment of the system, the thickness of the damper in the immediate vicinity of the projecting structure substantially corresponds to the extension of the projecting structure in the transverse direction of the elevator shaft.

In one embodiment of the system, the thickness of the damper at distances from the protruding structure in the vertical direction is smaller than in the immediate vicinity of the protruding structure.

♦ * 3 104815 In one embodiment of the system, the thickness of the silencer decreases gradually from a vertically protruding structure toward the silencer edge vertically.

5 In one embodiment of the system, the damper is formed of an insulating material.

In one embodiment of the system, the damper is formed of an insulating board.

10 In one embodiment of the system, the damper comprises insulating plates of various thicknesses.

In one embodiment of the system, insulating boards of different thicknesses are arranged in a descending order of thickness from the structure projecting from the damper.

In one embodiment of the system, the damper is arranged to extend between two successive floor-level door openings. . 20 substantially equal in thickness between the protruding structure at the bottom of the upper door opening, such as a threshold, and the protruding structure, such as the upper ridge, at the upper edge of the lower door opening, ···.

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• · I

In one embodiment of the system, the damper is arranged in the elevator shaft at least near the door openings which. . the lift car has a speed of the order of 4 m / s or higher.

In the following, the invention will be described in detail by way of example, with reference to the accompanying drawing, in which: Figure 1 shows a first embodiment of a coaching system according to the invention, Figure 2 shows section II- II of Fig. 1, 5 of Fig. 3 shows another embodiment of a coaching system according to the invention, Fig. 4 shows a third embodiment of a coaching system according to the invention.

Figure 1 shows a partially layered double-leaf sliding door as seen from the elevator shaft. Below the door is arranged a coaching system according to the invention, shown in section 15 in Figure 2. The coaching system of Figures 1-4 is intended to be installed in the full speed high speed elevator, where the travel speed of the car 5 can be e.g. The embodiments shown in Figures 1-3 are for those parts of the elevator shaft where there are no stopping levels to be served on the upper or lower side. For example, the elevator serves the upper floors of the house and leaves the floor 1j and / or 2.

At the door opening 2 between the floor level and the elevator shaft 1 and • · ·.

* · 25 at its bottom are structures extending towards the elevator shaft 1 • »· *. *. 3, which include level doors and sill strips extending • · · ·. in the case of the protruding structures 3, the air gap t between the elevator car 5 and the projecting structure 3 is substantially smaller • · 30 pi than the air between the elevator car 5 and the elevator shaft wall 6. ·. spacing t-2 · As elevator car 5 passes such a point, to prevent sudden air pocket formation of sound · · · *; extends horizontally substantially to the width of 104815 5 corresponding to the width of the elevator car 5 and vertically to a distance down the door opening.

The damper 7 is made up of a number of conventional rectangular mineral wool panels (manufactured by Isover Oy, Finland) used as thermal and acoustic insulation in the construction industry 5, which are fixed to the elevator shaft wall 6 by suitable mounting brackets. The mineral wool boards are arranged side by side and below the protruding structure 3 in a downwardly decreasing order of thickness so that the thickest mineral wool boards 71 having a thickness of e.g. about 90 mm are immediately below the protruding structure 3 corresponding to a substantially protruding structure 4. across the elevator shaft. Em. in turn, four 60 mm mineral wool plates 72 are arranged adjacent to the three ribbed 90 mm mineral wool plates 71, and four 30 mm mineral wool plates 73 are still lined below them. With this construction, the thickness of the dampener 7 3 down.

.. Figure 3 shows a damper 7, above the door opening, which is in the full speed range of the elevator car. The attenuator 7 is '···' arranged in a manner similar to Figures 1 and 2. This dampener 7 also consists of mineral wool plates of different thicknesses, which are fastened to three rows, each with four plates, on the elevator shaft wall above the upper ridge 4. In this example, the thickness of the mineral wool boards is reduced upwards so that a row of the thicker, e.g. • «· v 'from step 4 projecting upwards.

Figure 4 shows a damper 7 (which extends substantially between the consecutive threshold 3 at the lower edge of the upper door opening 21 and the upper ridge 4 at the upper edge of the lower door opening 22) arranged between two successive storey door openings • · 2,2. the damper consists of mineral wool boards of equivalent thickness, substantially 5 protruding from the threshold 3 and the upper ridge 4 towards the shaft.

The invention is not limited to the above embodiments only, but many modifications are possible within the scope of the inventive idea defined by the claims.

· Φ φ · 1 φ 1 1 · 1 1 ♦ ♦ ♦ ♦ ♦ ♦ 1 φ φ 1 1 · φ ♦ ♦ ♦ 1 · ♦ · 1 1 · · »· • •« «« «« «

Claims (11)

104815 7 A coaching system for an elevator shaft (1), wherein a structure (3, 4) protruding towards the elevator shaft is provided at the floor level and the door opening (2) between the floor plane and the elevator shaft, at which the elevator car (5) and the projecting structure ( The air gap (t1) between the elevator car and the shaft (6) is substantially smaller than the gap (t2) between the elevator car and the shaft (6), characterized in that the system includes a sound absorbing damper (7) arranged to cover the wall in the vicinity of the structure (3, 4) in an area extending horizontally substantially to the width of the elevator car and vertically at a distance away from the door opening. 15 System according to claim 1, characterized in that the silencer (7) is formed of a sound absorbing material. ✓ System according to Claim 1 or 2, characterized in that the thickness of the damper (7) is in the protruding structure (3, 4). . in the immediate vicinity essentially corresponds to the extension of the · · · projecting structure in the transverse direction of the elevator shaft. • · • «• 1 •« System according to one of Claims 1 to 3, characterized in that the thickness of the damper (7) at a distance ♦ ♦ · * ♦ 1 ♦ 1 from the protruding structure (3,4) is less than »·· * .1 'in the immediate vicinity of the projecting structure. «♦ • · * · '·' 30 A system according to any one of claims 1 to 4, characterized in that the thickness of the damper (7) decreases from the structure (3, 4) protruding vertically from the port. towards the edge of the silencer vertically. • · • «· 104815 8 System according to one of Claims 1 to 5, characterized in that the damper (7) is formed of an insulating material. System according to one of Claims 1 to 6, characterized in that the silencer (7) is formed of insulation. System according to claim 7, characterized in that the damper (7) comprises insulating plates of different thickness. System according to Claim 8, characterized in that the insulating boards of different thicknesses are arranged in a decreasing order of thickness in a vertical direction away from the projecting structure. System according to one of Claims 1 to 9, characterized in that, between two successive floor-level door openings (21, 22), the damper (7) is arranged to extend substantially uniformly in thickness at the lower edge of the upper door opening (21) and a projecting structure (4) at the upper edge of the lower door opening (22), such as • · «; · 1 between the upper ridge. • i · • · • • • I · • I> • V * · 1. 25 System according to one of Claims 1 to 10, characterized in that the silencer (7) is arranged in the elevator slide (1) at least in the vicinity of the door openings having ··· *. · 1 the lift car has a speed of the order of 4 m / s or higher. • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · • · · · · · · »9 104815