Retrofitting structure for noise reduction of step chain of escalator

Abstract

The utility model discloses an adding structure for noise reduction of step chains of an escalator. The escalator comprises two sets of step chains arranged side by side, a step shaft connected between the two sets of step chains, and idler wheels arranged on the step shaft. The adding structure is arranged at the rotation position of the step chain and comprises a tangential guide rail and an unloading guide rail. The tangential guide rail is arranged below the roller and is provided with a rail surface for guiding the roller to move; the unloading guide rail is arranged below a step chain and provided with a bearing face which extends in the running direction of the step chain and lifts chain pieces of the step chain. And a designed distance is formed between the bearing surface and the rail surface in the vertical direction. The step chain is lifted at the rotation position of the step chain, so that the impact force generated when the roller of the step chain is meshed with the step chain wheel is reduced, the noise generated when the step chain runs is effectively reduced, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of escalators, in particular to a retrofit structure for reducing the noise of the step chain of an escalator. Background Art

[0002] An escalator is a fixed electric drive device with a circulating running step for transporting passengers upward or downward on an inclined path. The step needs to run with the step chain, and the step chain needs to be driven and redirected by the step sprocket. At present, the escalators used in subway stations require an external step chain wheel with a high safety factor, which results in a relatively large size of the step chain. The contact between the step chain and the step sprocket is metal-to-metal meshing. Since it is the contact between moving metals, noise will be generated. Currently, the common practice is to add an elastic shock pad at the bottom of the tooth groove of the step sprocket to reduce noise. The shock pad at the bottom of the tooth groove of the above step sprocket is made of an elastic material, and long-term impact will cause it to fail. And when encountering a step chain with a large tonnage, the shock pad will be directly flattened and become ineffective. Summary of the Utility Model

[0003] Aiming at the above existing technical problems, the purpose of the utility model is to propose a retrofit structure for reducing the noise of the step chain of an escalator. By supporting the step chain at the turning position of the step chain, the impact force when the roller of the step chain meshes with the step sprocket is reduced, thereby effectively reducing the noise during the operation of the step chain, and it has strong practicability.

[0004] The technical solution of the utility model is realized as follows: A retrofit structure for reducing the noise of the step chain of an escalator,

[0005] The escalator includes two sets of the step chains arranged in parallel, a step shaft connected between the two sets of step chains, and rollers provided on the step shaft;

[0006] The retrofit structure is arranged at the turning position of the step chain and includes a tangential guide rail and a discharge guide rail;

[0007] The tangential guide rail is arranged below the roller and has a rail surface for guiding the movement of the roller; the discharge guide rail is arranged below the step chain and has a supporting surface extending along the running direction of the step chain and supporting the chain links of the step chain; there is a designed distance between the supporting surface and the rail surface in the vertical direction.

[0008] Further, guiding inclined surfaces are provided at both ends of the supporting surface in the running direction of the step chain; the guiding inclined surfaces have an inclined upper end connected to the end of the supporting surface and an inclined lower end away from the inclined upper end.

[0009] Further, the tangential guide rail and the discharge guide rail are fixedly connected by bolts.

[0010] Further, the additional structure is arranged at the entry end of the rotary position of the step chain.

[0011] Further, the unloading guide rail is made of wear-resistant material.

[0012] Further, the escalator includes a truss; the tangential guide rail is fixed to the truss by bolts.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] In the utility model, during the operation of the step chain, the unloading guide rail supports the step chain at the rotary position of the step chain to reduce the impact force when the roller of the step chain meshes with the step sprocket, thereby effectively reducing the noise during the operation of the step chain. The unloading guide rail is fixedly connected to the tangential guide rail by means of bolt connection, which is convenient for disassembly and replacement of the unloading guide rail and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution of the utility model will be further described below with reference to the drawings:

[0016] Figure 1 is a three-dimensional structure diagram of the strengthening structure of the utility model;

[0017] Figure 2 is Figure 1 an exploded view of

[0018] Figure 3 is an installation diagram of the strengthening structure of the utility model;

[0019] Figure 4 is Figure 3 a sectional view structure diagram of

[0020] Figure 5 is Figure 3 an exploded view of

[0021] Wherein: 1, tangential guide rail; 11, rail surface; 2, unloading guide rail; 21, supporting surface; 22, guiding inclined surface; 3, step chain; 4, step shaft; 5, roller; 6, roller; 7, rotary sprocket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the utility model more clearly defined.

[0023] As Figures 1-5Shown is a retrofitting structure for noise reduction of the step chain 3 of the present embodiment. The escalator of the present embodiment is a conventional component of the prior art, and the escalator includes components such as a truss, a step chain 3, a step shaft 4, rollers 5, a main guide rail, and a return sprocket 7. Two sets of the step chain 3 are arranged in parallel on the truss. The return sprockets 7 are arranged at both ends of the step chain 3 and are in driving connection with the step chain 3. By driving the rotation of one of the return sprockets 7, the step chain 3 is driven to operate. The two ends of the step chain 3 form a return position. A number of sets of step shafts 4 are arranged at intervals along the length direction of the step chain 3, and both ends of the step shaft 4 are connected to the links of the step chain 3 on both sides. When the step chain 3 moves, the step shaft 4 is driven to move. Rollers 5 are arranged at both ends of the step shaft 4. The rollers 5 are installed on the step shaft 4 through bearings and are located between the two sets of step chains 3, so that the rollers 5 are located outside the step chain 3. The main guide rail is arranged corresponding to the rollers 5, and when the step chain 3 moves, the rollers 5 roll on the main guide rail. It should be noted that the above components and their arrangement methods are all prior art.

[0024] In this embodiment, the step chain 3 includes inner links and outer links that are alternately hinged along the length extension direction of the step chain 3. The adjacent inner link and outer link are hinged through a roller 6. In the specific transmission process, at the above return position, the rollers 6 of the step chain 3 sequentially enter the tooth grooves of the return sprocket 7 to drive the step chain 3 to operate. The transmission method between the above step chain 3 and the return sprocket 7 is common knowledge.

[0025] The aforementioned retrofitting structure is installed at the return position of the step chain 3 and includes a tangential guide rail 1 and a discharge guide rail 2. The retrofitting structure of the present embodiment is arranged at the entry end of the return position of the step chain 3 to reduce noise when the roller 6 of the step chain 3 enters the return sprocket 7. The tangential guide rail 1 is fixedly connected to the truss through bolts. The tangential guide rail 1 is arranged below the roller 5 and has a rail surface 11 for guiding the movement of the roller 5. In the specific arrangement, the tangential guide rail 1 extends along the running direction of the step chain 3, and the tangential guide rail 1 is tangent to the circumference of the return position. During specific installation, an installation space is cut off on the main guide rail, and the tangential guide rail 1 is installed in this installation space. The two ends of the tangential guide rail 1 are butted against the main guide rail so that the roller 5 can smoothly move back and forth between the main guide rail and the tangential guide rail 1.

[0026] The aforementioned unloading guide rail 2 is arranged below the step chain 3 and has a supporting surface 21 that extends along the running direction of the step chain 3 and supports the link plates of the step chain 3. Among them, the unloading guide rail 2 is arranged on one side of the tangential guide rail 1, and the tangential guide rail 1 and the unloading guide rail 2 are fixedly connected by bolts. The unloading guide rail 2 is made of wear-resistant material, preferably a polymer wear-resistant material. There is a designed spacing in the up and down direction between the supporting surface 21 of the aforementioned unloading guide rail 2 and the rail surface 11 of the tangential guide rail 1. Through this designed spacing, when the step chain 3 is running, the link plates of the step chain 3 contact the supporting surface 21 to be supported. And through this designed spacing, when the step chain 3 is supported by the supporting surface 21 of the unloading guide rail 2, the roller 5 can move on the rail surface 11 of the tangential guide rail 1 or a certain gap is formed between the wheel surface of the roller 5 and the rail surface 11 of the tangential guide rail 1.

[0027] In this embodiment, guiding inclined surfaces 22 are processed at both ends of the supporting surface 21 in the running direction of the step chain 3. The guiding inclined surfaces 22 have an inclined upper end connected to the end of the supporting surface 21 and an inclined lower end away from the inclined upper end. Through the guiding of the guiding inclined surfaces 22, the step chain 3 can contact the supporting surface 21 smoothly and be supported.

[0028] During specific use, during the running process of the step chain 3, the step chain 3 contacts the supporting surface 21 of the unloading guide rail 2. The unloading guide rail 2 supports the step chain 3 at the turning position of the step chain 3 to reduce the impact force when the roller 6 of the step chain 3 meshes with the step sprocket, thereby effectively reducing the noise during the running of the step chain 3. The unloading guide rail 2 is fixedly connected to the tangential guide rail 1 by means of bolt connection, which is convenient for disassembly and replacement of the unloading guide rail 2 and has strong practicability.

[0029] The above are only embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A retrofit structure for escalator step chain noise reduction, characterized by: The escalator comprises two groups of step chains arranged in parallel, a step shaft connected between the two groups of step chains, and rollers arranged on the step shaft; The mounting structure is arranged at the rotation position of the step chain and includes a tangential guide rail and an unloading guide rail; The tangential guide rail is arranged below the roller and has a rail surface for guiding the movement of the roller; the unloading guide rail is arranged below the step chain and has a supporting surface extending along the running direction of the step chain and supporting the chain plate of the step chain; there is a designed spacing between the supporting surface and the rail surface in the up and down directions.

2. The mounting structure for escalator step chain noise reduction according to claim 1, characterized in that: The supporting surface is provided with guiding inclined surfaces at both ends in the running direction of the step chain; the guiding inclined surface has an inclined upper end connected to the end of the supporting surface, and an inclined lower end away from the inclined upper end.

3. The mounting structure for escalator step chain noise reduction according to claim 1, characterized in that: The tangential guide rail and the unloading guide rail are fixedly connected by bolts.

4. The mounting structure for escalator step chain noise reduction according to claim 1, characterized in that: The mounting structure is arranged at the entry end of the rotation position of the step chain.

5. The mounting structure for escalator step chain noise reduction according to claim 1, characterized in that: The unloading guide rail is made of wear-resistant material.

6. The mounting structure for reducing the noise of escalator step chains according to claim 1, characterized in that: The escalator comprises a truss; the tangential guide rail is fixed to the truss by bolts.

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