A high-strength and ultra-wear-resistant steel spoke pulley

Abstract

The invention discloses a high-strength and super-wear-resistant steel spoke pulley, which relates to the technical field of steel spoke pulleys for elevators, and comprises a steel spoke supporting surface, wherein the outer ring of the steel spoke supporting surface is integrally cast and connected with a working surface by means of centrifugal polymerization, and the working surface of the invention is a high-strength and super-wear-resistant working surface; a metal bearing chamber is arranged at the inner ring of the steel spoke supporting surface, and the metal bearing chamber and the steel spoke supporting surface are fixedly connected by means of stretching, spinning, riveting or welding processes; the high-strength and super-wear-resistant steel spoke pulley provided by the invention combines the metal bearing chamber, the steel spoke supporting surface and the working surface, thereby improving the load-bearing capacity of the pulley, avoiding the brittle defects of traditional cast pulleys, and effectively solving the disadvantages of unstable and poor strength of plastic products.

Description

Technical Field

[0001] The invention relates to the technical field of steel spoke pulleys for elevators, in particular to a high-strength and ultra-wear-resistant steel spoke pulley. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building. Its car runs on at least two rows of rigid tracks that are perpendicular to the horizontal plane or have an inclination angle of less than 15° to the plumb line. When the elevator is in use, pulleys are often required to pull the elevator up and down.

[0003] The existing technology cannot dynamically adjust the clearance between the pulley and the bearing when the working temperature of the pulley changes, so it is difficult to ensure the normal operation of the bearing, which affects the quality and service life of the elevator. This is mainly because the problem that the working surface and the supporting surface cannot be cast as a whole cannot be avoided. The working surface and the supporting surface are generally made of two different materials, and the two materials are difficult to match together. At the same time, the use environment of the elevator is very complex. The ambient temperature of the elevator may be between -30℃ and 50℃. Due to the change in temperature, the pulley and the bearing will cause the fit between the two to be too loose (when the temperature rises) or too tight (when the temperature drops): when the fit is too loose and the amount of clearance generated is greater than the interference between the bearing and the pulley during assembly, the pulley will have an over-fit with the bearing, resulting in friction and temperature rise between the two. At the same time, due to the small gap between the bearing and the inner hole of the pulley, the heat generated by friction is not easy to dissipate, which will directly accelerate the wear of the bearing and the pulley, and eventually cause the two to no longer match. The result of this mismatch may cause the bearing to generate noise during operation and the elevator to vibrate or shake during operation, affecting the quality of the elevator; when the temperature drops and the fit is too tight, the deformation of the pulley is greater than the bearing, so that the fit between the pulley and the bearing becomes tighter and tighter as the temperature drops, reducing the normal clearance between the two, which will damage the bearing over time, causing the elevator to generate noise and vibration during operation, affecting the quality of the elevator. Therefore, it is necessary to propose a pulley structure that can avoid the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a high-strength and ultra-wear-resistant steel spoke pulley to solve the problems existing in the above-mentioned prior art, combine the metal bearing chamber, the steel spoke support surface and the working surface together, improve the load-bearing capacity of the pulley, avoid the brittle defects of traditional cast pulleys, and effectively solve the shortcomings of unstable and poor strength of plastic products.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a high-strength and super-wear-resistant steel spoke pulley, comprising a center, spokes and other structures, specifically including a steel spoke supporting surface; a working surface, the outer ring of the steel spoke supporting surface is integrally cast and connected to the working surface by centrifugal polymerization, and the working surface of the present invention is a high-strength and super-wear-resistant working surface; a metal bearing chamber, the metal bearing chamber is fixedly connected to the steel spoke supporting surface by stretching, spinning, riveting or welding processes.

[0007] Optionally, an even number of protrusions and reinforcing ribs are provided on both the front and back sides of the steel spoke support surface.

[0008] Optionally, annular ribs are symmetrically provided on both sides of the outer ring of the steel spoke support surface, and the working surface is embedded in the space formed between the two annular ribs through centrifugal aggregation.

[0009] Optionally, the working surface is made of MC nylon material.

[0010] Optionally, the annular rib and the steel spoke supporting surface are integrally formed.

[0011] Compared with the prior art, the present invention has achieved the following technical effects:

[0012] The present invention rationally combines the steel spoke support surface, the high-strength and super-wear-resistant working surface and the metal bearing chamber, effectively solving the disadvantages of unstable and poor strength of plastic products, and designs the structure of the embedded high-strength and super-wear-resistant working surface. The structural design of the high-strength and super-wear-resistant working surface reduces the friction noise during movement, and the ultra-high molecular weight and ultra-wear-resistant characteristics extend the service life of the pulley. The ultra-low friction coefficient can protect the moving wire rope and greatly extend the replacement cycle of the wire rope. The transmission force of the pulley all acts on the steel spoke support surface and the metal bearing chamber, and the high-strength and super-wear-resistant working surface is embedded between the steel spoke support surface, ensuring that the steel spoke support surface and the working surface have a permanent clamping force, and will never loosen or fall off in harsh environments and under abnormal loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the spoke pulley of the present invention;

[0015] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0016] Explanation of the reference numerals: 1-metal bearing chamber, 2-steel spoke support surface, 3-working surface, 4-reinforcement rib, 5-annular rib. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The purpose of the present invention is to provide a high-strength and ultra-wear-resistant steel spoke pulley to solve the problems existing in the above-mentioned prior art, combine the metal bearing chamber, the steel spoke support surface and the working surface together, improve the load-bearing capacity of the pulley, avoid the brittle defects of traditional cast pulleys, and effectively solve the shortcomings of unstable and poor strength of plastic products.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] refer to Figure 1 , Figure 2 The present invention provides a high-strength and super-wear-resistant steel spoke pulley, including a steel spoke supporting surface 2, an outer ring of which is provided with a working surface 3. Specifically, the outer ring of the steel spoke supporting surface 2 is integrally cast and connected with the working surface 3 by centrifugal polymerization. The working surface 3 of the present invention is a high-strength and super-wear-resistant working surface; a metal bearing chamber 1 is provided at the inner ring of the steel spoke supporting surface 2, and the metal bearing chamber 1 is fixedly connected with the steel spoke supporting surface 2 by stretching, spinning, riveting or welding.

[0021] In order to improve the overall strength, an even number of protrusions and reinforcing ribs 4 are provided on both the front and back sides of the steel spoke support surface 2 in this embodiment, which can greatly reduce the deformation of the component after being loaded. The more reinforcing ribs 4 there are, the smaller the deformation after being loaded, thereby ensuring the running stability of the elevator. Specifically, 6, 8 or 12 reinforcing ribs 4 can be provided. This embodiment changes the traditional practice; 6 or more reinforcing ribs 4 are provided, which can greatly reduce the deformation of the component after being loaded.

[0022] In one of the preferred embodiments, in order to increase the connection safety and stability between the steel spoke support surface 2 and the working surface 3, an integrally formed annular ribs 5 are uniquely and symmetrically provided on both sides of the outer ring of the steel spoke support surface 2, and the annular ribs 5 are extruded circumferentially on the left and right sides of the steel spoke support surface 2, and the high-strength and super-wear-resistant working surface is embedded in the annular ribs 5 by centrifugal casting.

[0023] The present invention rationally combines the metal bearing chamber 1, the steel spoke support surface 2 and the high-strength and super-wear-resistant working surface together, thereby improving the load-bearing capacity of the pulley, avoiding the brittle defects of the traditional cast pulley, and effectively solving the shortcomings of the unstable strength and poor strength of the plastic product. The structural design of the high-strength and super-wear-resistant working surface reduces the friction noise during movement, and the ultra-high molecular weight and ultra-wear-resistant characteristics extend the service life of the pulley. The ultra-low friction coefficient can protect the moving wire rope and greatly extend the replacement cycle of the wire rope. The transmission force of the high-strength and super-wear-resistant steel spoke pulley all acts on the steel spoke support surface and the metal bearing chamber 1, and the high-strength and super-wear-resistant working surface is embedded between the annular rib 5 of the steel spoke support surface 2, ensuring that the steel spoke support surface 2 and the high-strength and super-wear-resistant working surface have a permanent clamping force, and will never loosen or fall off in harsh environments and under abnormal loads.

[0024] The above embodiment can adopt a new casting process to integrally cast the high-strength and ultra-wear-resistant working surface of MC nylon material and the steel spoke support surface 2 together by centrifugal casting to form a solid revolving pair;

[0025] Its advantage is that if the temperature drops, since the deformation of the high-strength and super-wear-resistant working surface is greater than that of the steel spoke supporting surface 2, the fit between the high-strength and super-wear-resistant working surface and the steel spoke supporting surface 2 will become tighter and tighter as the temperature drops, and the fit between the high-strength and super-wear-resistant working surface and the steel spoke supporting surface 2 will become better and better.

[0026] In this embodiment, the bonding strength between the centrifugally polymerized integrated high-strength and super-wear-resistant working surface and the steel spoke support surface 2 comes from: (1) the nylon molecular chain network (molecular chains are cross-linked) cools and solidifies from the melt state, the molecular chain movement is frozen, the distance between the molecular chains is reduced, and a large volume shrinkage occurs. Due to the obstruction of the steel spoke support surface 2, the volume shrinkage is inhibited. Therefore, the molecular chain is in a tensioned state, forming a large shrinkage force, that is, a large compressive stress is generated on the surface of the steel spoke support surface 2; (2) since the surface of the steel spoke support surface 2 is not absolutely smooth, there are always surface structures such as fine grooves and protrusions. When the nylon is in a molten state, the viscosity is very low, and the molecular chain will enter the fine structure of the metal bushing surface. After cooling, the steel spoke support surface 2 is in close contact with the inner surface of the high-strength and super-wear-resistant working surface. The fine grooves and protrusions at the interface prevent the steel spoke support surface 2 from peeling off from the high-strength and super-wear-resistant working surface; (3) at high temperatures, the nylon molecular chains and the chemical groups on the molecular chains are active, and will undergo certain physical adsorption and chemical linkage with the metal ions and oxides on the surface of the steel spoke support surface 2, thereby enhancing the interfacial bonding force.

[0027] In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A spoke pulley, characterized in that: include: Steel spoke support surface; The outer ring of the steel spoke support surface is integrally cast and connected with the working surface by centrifugal polymerization; A metal bearing chamber, wherein the metal bearing chamber is fixedly connected to the steel spoke support surface by stretching, spinning, riveting or welding; annular ribs are symmetrically arranged on both sides of the outer ring of the steel spoke support surface, and the working surface is embedded in the space formed between the two annular ribs by centrifugal polymerization; The annular rib is integrally formed with the steel spoke supporting surface.

2. The spoke pulley according to claim 1, characterized in that: The working surface is made of MC nylon material.

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