Wear-resistant and low-temperature-resistant elevator balance compensation chain

Abstract

The utility model relates to the related technical field of elevator equipment, in particular to a wear-resistant and low-temperature-resistant elevator balance compensation chain which comprises an elevator car connecting end, and a wear-resistant chain link mechanism is arranged on the lower surface of the elevator car connecting end. According to the wear-resistant and low-temperature-resistant elevator balance compensation chain, through the arrangement of the wear-resistant chain link mechanism, when the wear-resistant and low-temperature-resistant elevator balance compensation chain is used, an elevator car connecting end drives an upper connecting ring to move upwards, a connecting trunk and a lower connecting ring move along with the upper connecting ring, and at the moment, relative angle change and certain stretching or compression can occur between the upper connecting ring and the lower connecting ring; due to the displacement rotating balls, rotating ball limiting parts, rotating ball ring grooves, first connecting sliding rings, second connecting sliding rings and other structures arranged on the inner sides of the upper connecting ring and the lower connecting ring, relative movement between the chain links is converted into rolling of the rotating balls and relative sliding between the sliding rings, and the friction resistance of the connecting portions of the chain links is greatly reduced through rolling and sliding fit; therefore, the abrasion is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator equipment, and in particular to a wear-resistant and low-temperature resistant elevator balance compensation chain. Background Technology

[0002] In modern buildings, elevators have become an indispensable vertical transportation tool. Elevator equipment mainly consists of a traction system, a guiding system, a car, a door system, a weight balancing system, an electric drive system, an electrical control system, and a safety protection system. Among these, the weight balancing system plays a crucial role in the smooth operation of the elevator, and the elevator balance compensation chain is one of the key components of the weight balancing system. Traditional elevator balance compensation chains mostly use ordinary metal materials or metal chains with simple plastic coating, which have many problems in actual use. Therefore, there is a particular need for a wear-resistant and low-temperature resistant elevator balance compensation chain.

[0003] However, existing elevator balance compensation chains, with their ordinary metal links, lack effective wear-resistant protection, making their surfaces prone to wear. Over time, the wear gradually worsens, leading not only to changes in link dimensions, affecting the chain's accuracy and balance, but also potentially reducing link strength due to excessive wear, posing a risk of breakage. Furthermore, in terms of low-temperature performance, when elevators are used in cold regions or low-temperature environments, such as northern winters, ordinary material compensation chains face severe challenges. Low temperatures significantly reduce the toughness of metal materials, increasing brittleness and making them prone to breakage. Simultaneously, some plastic-coated materials harden and become brittle at low temperatures, losing their original elasticity and cushioning effect, failing to effectively protect the links and further exacerbating the possibility of damage to the compensation chain in low-temperature environments. Utility Model Content

[0004] The purpose of this invention is to provide a wear-resistant and low-temperature-resistant elevator balance compensation chain to address the problems mentioned in the background section regarding existing elevator balance compensation chains. Ordinary metal chain links lack effective wear protection, making their surfaces easily worn. Over time, the wear intensifies, leading not only to changes in link dimensions, affecting the accuracy and balance of the compensation chain, but also potentially reducing link strength due to excessive wear, posing a risk of breakage. Regarding low-temperature performance, when elevators are used in cold regions or low-temperature environments, such as northern winters, ordinary material compensation chains face severe challenges. Low temperatures significantly reduce the toughness of metal materials, increasing brittleness and making them prone to breakage. Simultaneously, some plastic-coated materials harden and become brittle at low temperatures, losing their original elasticity and cushioning effect, failing to effectively protect the chain links, further exacerbating the possibility of damage to the compensation chain in low-temperature environments.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and low-temperature resistant elevator balance compensation chain, including a car connection end, a wear-resistant chain link mechanism is provided on the lower surface of the car connection end, a silicone rubber protective layer is attached to the outer surface of the wear-resistant chain link mechanism, an aramid fiber protective layer is attached to the outer surface of the silicone rubber protective layer, and a polyurethane protective layer is attached to the outer surface of the aramid fiber protective layer.

[0006] The wear-resistant chain link mechanism includes an upper connecting ring, a connecting body, a lower connecting ring, a heat-insulating plastic shell, a displacement ball, a ball limiter, a ball ring groove, a first connecting slip ring, and a second connecting slip ring. The upper connecting ring is movably connected to the lower part of the car connecting end. The connecting body is fixedly connected to the lower surface of the upper connecting ring. The lower connecting ring is fixedly connected to the lower surface of the connecting body. The heat-insulating plastic shell is fixedly connected to one side surface of the connecting body. A displacement ball is slidably connected to the inner surface of the upper connecting ring. A ball limiter is slidably connected to one side surface of the displacement ball. A ball ring groove is fixedly connected to one side surface of the ball limiter. A first connecting slip ring is fixedly connected to one side surface of the ball ring groove. A second connecting slip ring is fixedly connected to the other side surface of the ball ring groove.

[0007] Preferably, the upper end of the car connecting end is a ring, and the lower end of the car connecting end is engaged with the upper connecting ring. The upper connecting ring is fixedly connected to the lower connecting ring through the connecting body.

[0008] Preferably, the size of the upper connecting ring matches the size of the lower connecting ring, and the heat-insulating plastic shell has a set of rings symmetrically distributed on each of the left and right sides of the connecting body.

[0009] Preferably, a set of twelve displacement beads is provided in each of the upper and lower connecting rings, and the displacement beads are symmetrically arranged along the central axis of the upper and lower connecting rings.

[0010] Preferably, the rotating ball limiters are symmetrically arranged at equal intervals along the central axis of the rotating ball ring groove in twelve sets, and are in a sliding connection relationship with the displacement rotating balls. The inner sides of the upper connecting ring and the lower connecting ring are respectively provided with a set of sliding grooves with the same radius as the displacement rotating balls.

[0011] Preferably, the size of the first connecting slip ring and the size of the second connecting slip ring are matched, and the first connecting slip ring and the second connecting slip ring are symmetrically arranged on both sides of the upper connecting ring and the lower connecting ring, and the size of the first connecting slip ring and the outer size of the second connecting slip ring are matched with the outer size of the upper connecting ring and the lower connecting ring.

[0012] Preferably, the upper connecting ring and the lower connecting ring are interlocked to form a long chain. The silicone rubber protective layer, the aramid fiber protective layer, and the polyurethane protective layer are wrapped around the outside of the long chain formed by the upper connecting ring and the lower connecting ring, and the thickness of the polyurethane protective layer is greater than the thickness of the aramid fiber protective layer, which is greater than the thickness of the silicone rubber protective layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Silicone rubber protective layer, aramid fiber protective layer and polyurethane protective layer can effectively prevent chain links from wearing due to frequent contact with other components or environmental factors, enhance the overall tensile and wear resistance and provide a smooth surface, reduce the coefficient of friction, reduce the wear rate and extend the overall wear life of the compensation chain.

[0015] 2. The design of displacement ball bearings, ball bearing limiters, ball bearing ring grooves, first connecting slip rings, and second connecting slip rings makes the connection and relative movement between chain links more flexible. During elevator operation, the bending, stretching, and swaying movements of the compensation chain will cause friction between chain links. These internal ball bearing and slip ring structures can convert the original sliding friction into rolling friction, greatly reducing frictional resistance and thus reducing wear on the chain link connection parts.

[0016] 3. The heat-insulating plastic shell connecting both sides of the body plays a good role in heat insulation. In low-temperature environments, it can slow down the loss of heat from the inside of the chain links to the outside, allowing the metal materials inside the chain links to work in a relatively high-temperature environment, reducing the impact of low temperature on the toughness of the metal materials, and reducing the risk of metal becoming brittle and breaking. Attached Figure Description

[0017] Figure 1 This is a side view of the appearance structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the inner, middle and outer protective layers of this utility model in cooperation with each other;

[0019] Figure 3 This is a schematic diagram of the interlocking structure of the links in this practical application;

[0020] Figure 4 This is a schematic diagram of the wear-resistant chain link mechanism of this utility model.

[0021] In the diagram: 1. Car connecting end; 2. Wear-resistant chain link mechanism; 201. Upper connecting ring; 202. Connecting body; 203. Lower connecting ring; 204. Thermal insulation plastic shell; 205. Displacement ball; 206. Ball limiter; 207. Ball ring groove; 208. First connecting slip ring; 209. Second connecting slip ring; 3. Silicone rubber protective layer; 4. Aramid fiber protective layer; 5. Polyurethane protective layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a wear-resistant and low-temperature resistant elevator balance compensation chain, including a car connection end 1, a wear-resistant chain link mechanism 2 is provided on the lower surface of the car connection end 1, a silicone rubber protective layer 3 is attached to the outer surface of the wear-resistant chain link mechanism 2, an aramid fiber protective layer 4 is attached to the outer surface of the silicone rubber protective layer 3, and a polyurethane protective layer 5 is attached to the outer surface of the aramid fiber protective layer 4.

[0024] The wear-resistant chain link mechanism 2 includes an upper connecting ring 201, a connecting body 202, a lower connecting ring 203, a heat-insulating plastic shell 204, a displacement ball bearing 205, a ball bearing limiter 206, a ball bearing groove 207, a first connecting slip ring 208, and a second connecting slip ring 209. The upper connecting ring 201 is movably connected to the lower part of the car connecting end 1. The connecting body 202 is fixedly connected to the lower surface of the upper connecting ring 201. The lower connecting ring 203 is fixedly connected to the lower surface of the connecting body 202. One side of the connecting body 202... An insulating plastic shell 204 is fixedly connected to the upper connecting ring 201. A displacement ball 205 is slidably connected to the inner surface of the upper connecting ring 201. A ball limiter 206 is slidably connected to one side surface of the displacement ball 205. A ball ring groove 207 is fixedly connected to one side surface of the ball limiter 206. A first connecting slip ring 208 is fixedly connected to one side surface of the ball ring groove 207. A second connecting slip ring 209 is fixedly connected to the other side surface of the ball ring groove 207. The connection is made via the upper connecting ring 201, the connecting body 202, and the lower connecting ring 201. 3. The insulated plastic shell 204, displacement ball bearing 205, ball bearing limiter 206, ball bearing annular groove 207, first connecting slip ring 208, and second connecting slip ring 209 are configured such that, during use, the car connecting end 1 drives the upper connecting ring 201 to move upward, and the connecting body 202 and lower connecting ring 203 follow suit. At this time, a relative angle change and a certain degree of stretching or compression will occur between the upper connecting ring 201 and the lower connecting ring 203. Due to the displacement mechanism set inside the upper connecting ring 201 and the lower connecting ring 203... The structure including the ball bearing 205, ball bearing limiter 206, ball bearing ring groove 207, first connecting slip ring 208, and second connecting slip ring 209 transforms the relative motion between chain links into the rolling of the ball bearing 205 and the relative sliding between the slip rings. This rolling and sliding cooperation greatly reduces the frictional resistance at the chain link connection points, thereby reducing wear. At the same time, in low-temperature environments, the heat-insulating plastic shell 204 can reduce heat loss, maintain a relatively stable temperature environment inside the chain links, and prevent the metal chain links from becoming brittle due to low temperatures.

[0025] Furthermore, the upper end of the car connecting end 1 is a ring, and the lower end of the car connecting end 1 is interlocked with the upper connecting ring 201. The upper connecting ring 201 is fixedly connected to the lower connecting ring 203 through the connecting body 202. Through the arrangement of the car connecting end 1, the upper connecting ring 201, the connecting body 202 and the lower connecting ring 203, a multi-connection method is formed during use. Compared with a single connection form, it can better withstand the various forces such as tension, pressure and torque generated during elevator operation, ensuring the stability of the connection and reducing the risk of loosening or falling off of the connection parts.

[0026] Furthermore, the size of the upper connecting ring 201 matches the size of the lower connecting ring 203. A set of thermal insulation plastic shells 204 are symmetrically distributed on both the left and right sides of the connecting body 202. With the thermal insulation plastic shells 204, during use, a set of thermal insulation plastic shells 204 on each of the left and right sides of the connecting body 202 and symmetrically distributed can more comprehensively cover the connecting body, reduce heat loss, better maintain a relatively stable internal temperature of the chain links in low-temperature environments, prevent the metal chain links from becoming brittle due to low temperatures, and improve the performance stability of the compensation chain in low-temperature environments.

[0027] Furthermore, a set of twelve displacement beads 205 are provided in each of the upper connecting ring 201 and the lower connecting ring 203. The displacement beads 205 are symmetrically arranged along the central axis of the upper connecting ring 201 and the lower connecting ring 203. Through the arrangement of the displacement beads 205, multiple displacement beads are evenly distributed and symmetrically arranged during use, which can evenly distribute the pressure of the chain link connection part to each bead, avoid excessive wear caused by excessive local pressure, effectively reduce the friction coefficient between chain links, reduce wear, and extend service life. Moreover, when the relative angle between chain links changes, or when there is stretching or compression, the displacement beads can roll flexibly in the bead ring groove, converting the relative sliding friction between chain links into rolling friction, which greatly reduces frictional resistance and improves the working efficiency of the compensation chain.

[0028] Furthermore, twelve sets of ball limiters 206 are symmetrically arranged at equal intervals along the central axis of the ball ring groove 207, and are in a sliding connection relationship with the displacement ball 205. The inner sides of the upper connecting ring 201 and the lower connecting ring 203 are respectively provided with a set of sliding grooves with the same radius as the displacement ball 205. Through the setting of the ball limiters 206, the displacement ball can be precisely limited during use. When relative movement occurs between the chain links, the displacement ball is constrained by the ball limiters during rolling and can only move within the specified range, avoiding excessive displacement or dislodgement of the displacement ball, and ensuring the accuracy and stability of the relative movement between the chain links.

[0029] Furthermore, the dimensions of the first connecting slip ring 208 and the second connecting slip ring 209 are matched. The dimensions of the first connecting slip ring 208 and the second connecting slip ring 209 are symmetrically arranged on both sides of the upper connecting ring 201 and the lower connecting ring 203. The outer dimensions of the first connecting slip ring 208 and the second connecting slip ring 209 are matched with the outer dimensions of the upper connecting ring 201 and the lower connecting ring 203. The arrangement of the first connecting slip ring 208 and the second connecting slip ring 209 helps to reduce the frictional resistance during their movement, making the relative sliding between the chain links smoother. This ensures that the compensation chain can flexibly extend, bend, and twist with the rise and fall of the car, improving the compensation chain's ability to adapt to different operating states of the elevator and ensuring that it can accurately compensate for the weight difference between the car and the counterweight.

[0030] Furthermore, the upper connecting ring 201 and the lower connecting ring 203 are interlocked to form a long chain. The silicone rubber protective layer 3, the aramid fiber protective layer 4, and the polyurethane protective layer 5 wrap around the long chain formed by the upper connecting ring 201 and the lower connecting ring 203. The thickness of the polyurethane protective layer 5 is greater than the thickness of the aramid fiber protective layer 4, which is greater than the thickness of the silicone rubber protective layer 3. Through the setting of the silicone rubber protective layer 3, the aramid fiber protective layer 4, and the polyurethane protective layer 5, the chain links are protected from all directions during use. The silicone rubber layer 3 buffers external impacts and friction with its elasticity, the aramid fiber layer 4 enhances the overall structural strength, and the polyurethane coating 5 resists external wear and corrosion. When the elevator operates in a low-temperature environment and the chain links shrink due to temperature changes or are subjected to external impacts, the silicone rubber layer 3 deforms first to absorb stress, the aramid fiber layer 4 prevents excessive structural deformation, and the polyurethane coating 5 protects the chain links from direct damage from harsh external environments, ensuring the structural integrity and normal working performance of the chain links at low temperatures.

[0031] Working Principle: During elevator operation, the car connecting end 1 is connected to the car. As the car moves up and down, the wear-resistant chain link mechanism 2 will extend, bend, and twist accordingly. When the elevator car rises, the car connecting end 1 drives the upper connecting ring 201 to move upward, and the connecting body 202 and the lower connecting ring 203 follow suit. At this time, the relative angle between the upper connecting ring 201 and the lower connecting ring 203 will change and there will be a certain degree of stretching or compression. Due to the displacement ball 205, ball limit 206, ball ring groove 207, first connecting slip ring 208, and second connecting slip ring 209 provided on the inner side of the upper connecting ring 201 and the lower connecting ring 203, the relative movement between the chain links is transformed into the rolling of the ball 205 and the relative sliding between the slip rings. This rolling and sliding cooperation greatly reduces the frictional resistance of the chain link connection parts, thereby reducing wear. At the same time, in low-temperature environments, the heat-insulating plastic shell 204 can reduce heat loss. To maintain a relatively stable temperature environment inside the chain links and prevent the metal chain links from becoming brittle due to low temperatures, the silicone rubber protective layer 3, aramid fiber protective layer 4, and polyurethane protective layer 5 provide all-round protection for the chain links from the outside. The silicone rubber layer 3 uses its elasticity to buffer external impacts and friction, the aramid fiber layer 4 enhances the overall structural strength, and the polyurethane coating 5 resists external wear and corrosion. When the elevator operates in a low-temperature environment and the chain links shrink due to temperature changes or are subjected to external impacts, the silicone rubber layer 3 deforms first to absorb stress, the aramid fiber layer 4 prevents excessive structural deformation, and the polyurethane coating 5 protects the chain links from direct damage from harsh external environments, ensuring the structural integrity and normal working performance of the chain links at low temperatures. This ensures that the entire compensation chain can accurately compensate for the weight difference between the elevator car and the counterweight, enabling the elevator traction system to operate stably, ensuring the smoothness and safety of elevator operation, and reducing elevator malfunctions or safety hazards caused by a decline in the performance of the compensation chain.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant and low-temperature resistant elevator balance compensation chain, comprising a car connection end (1), characterized in that: The lower surface of the car connecting end (1) is provided with a wear-resistant chain link mechanism (2), the outer surface of the wear-resistant chain link mechanism (2) is attached with a silicone rubber protective layer (3), the outer surface of the silicone rubber protective layer (3) is attached with an aramid fiber protective layer (4), and the outer surface of the aramid fiber protective layer (4) is attached with a polyurethane protective layer (5). The wear-resistant chain link mechanism (2) includes an upper connecting ring (201), a connecting body (202), a lower connecting ring (203), a heat-insulating plastic shell (204), a displacement ball (205), a ball limiter (206), a ball ring groove (207), a first connecting slip ring (208), and a second connecting slip ring (209). The upper connecting ring (201) is movably connected to the lower part of the car connecting end (1). The connecting body (202) is fixedly connected to the lower surface of the upper connecting ring (201), and the lower connecting ring (209) is fixedly connected to the lower surface of the connecting body (202). 3) A heat-insulating plastic shell (204) is fixedly connected to one side surface of the connecting body (202), a displacement ball (205) is slidably connected to the inner side surface of the upper connecting ring (201), a ball limiter (206) is slidably connected to one side surface of the displacement ball (205), a ball ring groove (207) is fixedly connected to one side surface of the ball limiter (206), a first connecting slip ring (208) is fixedly connected to one side surface of the ball ring groove (207), and a second connecting slip ring (209) is fixedly connected to the other side surface of the ball ring groove (207).

2. The wear-resistant and low-temperature resistant elevator balance compensation chain according to claim 1, characterized in that: The upper end of the car connecting end (1) is a ring, and the lower end of the car connecting end (1) is engaged with the upper connecting ring (201). The upper connecting ring (201) is fixedly connected to the lower connecting ring (203) through the connecting body (202).

3. The wear-resistant and low-temperature resistant elevator balance compensation chain according to claim 1, characterized in that: The size of the upper connecting ring (201) matches the size of the lower connecting ring (203), and the heat-insulating plastic shell (204) is provided with a set of symmetrically distributed on the left and right sides of the connecting body (202).

4. The wear-resistant and low-temperature resistant elevator balance compensation chain according to claim 1, characterized in that: The displacement beads (205) are provided in a set in the upper connecting ring (201) and the lower connecting ring (203), with twelve beads in each set, and the displacement beads (205) are symmetrically arranged on the central axis of the upper connecting ring (201) and the lower connecting ring (203).

5. The wear-resistant and low-temperature resistant elevator balance compensation chain according to claim 1, characterized in that: The ball limiters (206) are symmetrically arranged in twelve groups at equal intervals along the central axis of the ball ring grooves (207), and are in a sliding connection relationship with the displacement balls (205). The inner sides of the upper connecting ring (201) and the lower connecting ring (203) are respectively provided with a set of sliding grooves with the same radius as the displacement balls (205).

6. The wear-resistant and low-temperature resistant elevator balance compensation chain according to claim 1, characterized in that: The size of the first connecting slip ring (208) matches the size of the second connecting slip ring (209). The size of the first connecting slip ring (208) and the second connecting slip ring (209) are symmetrically arranged on both sides of the upper connecting ring (201) and the lower connecting ring (203). The size of the first connecting slip ring (208) and the outer dimensions of the second connecting slip ring (209) match the outer dimensions of the upper connecting ring (201) and the lower connecting ring (203).

7. The wear-resistant and low-temperature resistant elevator balance compensation chain according to claim 1, characterized in that: The upper connecting ring (201) and the lower connecting ring (203) are interlocked to form a long chain. The silicone rubber protective layer (3), the aramid fiber protective layer (4) and the polyurethane protective layer (5) are wrapped around the outside of the long chain formed by the upper connecting ring (201) and the lower connecting ring (203). The thickness of the polyurethane protective layer (5) is greater than the thickness of the aramid fiber protective layer (4) and the thickness of the silicone rubber protective layer (3).

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