A new car roof structure for a medium-high speed elevator

Abstract

The utility model relates to a new car roof structure for medium -high speed elevator, aims at the demand of reducing elevator shaft pit depth. Including car roof welding spare (1), perforated plate (2), sound insulation material (3) and car roof sealing plate (4), its car roof welding spare (1) as core bearing matrix, adopts the design of grid reinforcing rib, and the reinforcing rib height is 20 50mm, and the interval is 200 400mm, the perforated plate (2) is laid on the upper portion of car roof welding spare (1), is fixed through the drill tail silk, the sound insulation material (3) selects polyurethane foam or glass fiber cotton thickness 10 30mm, the car roof sealing plate (4) adopts galvanized steel sheet or stainless steel sheet, and the edge sets up the bending structure, the utility model not only guarantees the strength and rigidity of elevator car bottom, also effectively improved the security and operation effect of overall structure, is applicable to the elevator equipment that needs shallow pit installation.

Description

Technical Field

[0001] This utility model relates to the field of elevator equipment technology, and in particular to a novel car top structure for medium and high speed elevators. Background Technology

[0002] With the increasing prevalence of high-rise buildings, the demand for medium- and high-speed elevators has surged, making car noise control a key indicator of elevator quality. Traditional car roof structures often use single welded components, lacking effective noise reduction designs. This allows external mechanical and airflow noise to easily enter the car through the car roof, affecting passenger comfort. While some sound insulation solutions exist in current technology, they generally suffer from loose structures and poor sound absorption and insulation coordination, making it difficult to balance structural strength and acoustic performance. Furthermore, high-speed elevators, due to their increased operating speed, exhibit more complex noise transmission paths, necessitating a new car roof structure that integrates both sound absorption and sealing functions to overcome the noise reduction bottlenecks of traditional designs. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a novel car top structure for medium- and high-speed elevators, aiming to solve the technical issues of insufficient sound insulation performance and easy noise transmission into the car from traditional car top structures. To achieve the above objective, this utility model employs the following technical solution:

[0004] A novel car top structure for medium- and high-speed elevators includes a car top welded component (1), a perforated plate (2), sound insulation material (3), and a car top sealing plate (4). The car top welded component (1), serving as the core load-bearing base, employs a grid-like reinforcing rib design. The reinforcing ribs are 20-50mm high and spaced 200-400mm apart, ensuring structural strength while providing support for the sound-absorbing cavity. The perforated plate (2) is laid on top of the car top welded component (1) and fixed by a self-drilling screw. Its surface is uniformly distributed with micropores of 1mm-5mm diameter and 5mm-15mm spacing, surrounding the reinforcing ribs of the welded component. The sound-absorbing cavity is formed by combining the sound-absorbing cavity. The depth of the sound-absorbing cavity is determined by the height of the reinforcing rib of the car roof welded part (1), ranging from 20 to 50 mm. The noise energy is attenuated by the multiple reflections of sound waves in the cavity. The sound insulation material (3) is selected from polyurethane foam or glass fiber cotton with a thickness of 10-30 mm. It is attached to the upper surface of the perforated plate (2) with high temperature resistant adhesive to further block mid-to-high frequency noise. The car roof sealing plate (4) is made of galvanized steel plate or stainless steel plate with a bent structure at the edge. It is locked to the side of the car roof welded part (1) with bolts to form a fully enclosed sealing surface, which completely isolates the external noise transmission path.

[0005] This utility model achieves noise reduction through the following methods: the perforated plate (2) and the reinforcing ribs of the car top welded part (1) form a honeycomb-shaped sound-absorbing cavity. After the sound waves enter the cavity, they are attenuated by multiple reflections through the hole walls, thus specifically eliminating low- and mid-frequency mechanical noise; the sound insulation material (3) is made of porous sound-absorbing material to cover the perforated plate, blocking high-frequency noise penetration; the car top sealing plate (4) is formed by bolts to form a fully enclosed metal sealing surface, blocking the air transmission path; the drill tail wire rigidly connects the perforated plate (2) and the welded part (1) to avoid vibration noise; the edge bending design of the bolt-tightened car top sealing plate (4) eliminates gap sound leakage. Through the triple protection of "sound-absorbing cavity + sound insulation material + sealing plate", the external noise is attenuated twice and isolated once, which has a significant effect on suppressing motor noise and airflow noise in the elevator shaft. Compared with the prior art, this utility model has the following beneficial effects:

[0006] 1. This utility model actively consumes low- and mid-frequency noise energy through the sound-absorbing cavity formed by the perforated plate and reinforcing ribs, and, together with the passive sound barrier of sound insulation material and sealing plate, greatly improves the noise reduction efficiency.

[0007] 2. This utility model utilizes a drill tail screw to rigidly connect the perforated plate and the welded parts, and bolts to lock the sealing plate, eliminating the vibration and noise caused by the traditional loose structure, while maintaining the overall load-bearing capacity of the car roof.

[0008] 3. The detachable structure of the car top sealing plate of this utility model supports the quick replacement of sound insulation materials and is compatible with elevators with different speeds of 2.5-6m / s, with stronger expandability than the traditional welded one-piece car top.

[0009] Through the above-mentioned multi-level optimization design, this utility model significantly improves the overall noise reduction performance of the car top structure, meeting the higher requirements of quietness and smooth operation of modern elevator spaces. Attached Figure Description

[0010] Figure 1 This is a view of the car roof structure of this utility model.

[0011] Figure 2 This is a structural view of the car roof welded component of this utility model.

[0012] Figure 3 This is a structural view of the perforated plate of this utility model.

[0013] Figure 4 This is a structural view of the car roof sealing plate of this utility model.

[0014] Explanation of reference numerals in the attached drawings: 1. Car roof welded component, 2. Perforated plate, 3. Sound insulation material, 4. Car roof sealing plate. Detailed Implementation

[0015] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings:

[0016] The novel car roof structure includes a car roof welded component (1), a perforated plate (2), sound insulation material (3), and a car roof sealing plate (4). The car roof welded component (1) has an orthogonal reinforcing rib grid with a spacing of 200mm-400mm inside, and the height of the reinforcing rib is 20mm-50mm. The depth of the sound-absorbing cavity formed by the perforated plate (2) and the reinforcing rib is determined by the height of the reinforcing rib, ranging from 20-50mm, and the thickness of the reinforcing rib is 3mm. The perforated plate (2) is a galvanized steel plate with a thickness of 1.5mm-2mm, and its surface is evenly distributed with through holes of 1mm-5mm in diameter, with an opening rate of 15%-25%, and is constructed by drilling self-tapping screws. The screws are fixed to the upper surface of the reinforcing ribs of the car roof welded parts (1), with the screw spacing ≤200mm along the edge, and fixing points are provided at the intersection of the reinforcing ribs; the sound insulation material (3) is a polyurethane foam or glass fiber cotton with a thickness of 10mm-30mm, which is bonded to the perforated plate (2) by a high temperature resistant adhesive; the car roof sealing plate (4) is a galvanized steel plate or stainless steel plate with a thickness of 1.0mm-1.2mm, which is connected to the internal thread nut pre-embedded in the welded parts (1) by internal hexagonal bolts, and the joint is filled with silicone sealant to form a waterproof barrier.

Claims

1. A novel car top structure for medium- and high-speed elevators, characterized in that, include: The car roof welding component (1), perforated plate (2), sound insulation material (3), and car roof sealing plate (4) are provided. The car roof welding component (1) serves as a load-bearing base and has a mesh-like reinforcing rib inside. The height of the reinforcing rib is 20-50mm and the spacing is 200-400mm. The perforated plate (2) is laid on the upper part of the car roof welding component (1) and fixed by a self-drilling screw. Its surface is evenly distributed with micropores. The perforated plate (2) and the reinforcing rib enclose and form a sound-absorbing cavity. The sound insulation material (3) is set on the upper surface of the perforated plate (2). The edge of the car roof sealing plate (4) is provided with a bending structure and is locked to the side of the car roof welding component (1) by bolts to form a fully enclosed sealing surface.

2. The novel car top structure for medium- and high-speed elevators according to claim 1, characterized in that, The perforated plate (2) has a micropore diameter of 1-5 mm and a hole spacing of 5-15 mm, and the sound-absorbing cavity has a depth of 20-50 mm.

3. The novel car top structure for medium- and high-speed elevators according to claim 1, characterized in that, The sound insulation material (3) is polyurethane foam or glass fiber cotton with a thickness of 10-30mm, and is bonded to the perforated plate (2) by a high-temperature resistant adhesive.

4. The novel car top structure for medium- and high-speed elevators according to claim 1, characterized in that, The car roof sealing plate (4) is made of galvanized steel plate or stainless steel plate, and forms a continuous sealing surface with the side of the car roof welding part (1) by bolts.

5. The novel car top structure for medium- and high-speed elevators according to claim 1, characterized in that, The thickness of the reinforcing rib is 3mm.

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