Dustproof spherical steel support

Abstract

The utility model belongs to the technical field of bridges and building structures, and relates to a dustproof spherical steel support which comprises an upper support plate, a plane stainless steel plate, a plane sliding plate, a spherical crown lining plate, a spherical sliding plate, a lower support plate and a sealing ring. A groove II is formed in the bottom of the spherical crown lining plate; the upper part of the sealing ring is embedded in the groove II; the lower portion of the sealing ring is placed in the third groove. The sealing ring shaped like the Chinese character'shan 'is tightly attached to the middle of the spherical crown lining plate and the lower support plate, the structural design of the sealing ring shaped like the Chinese character'shan' can achieve a good sealing effect, particles such as dust can be effectively prevented from entering the support, the effect of multi-layer protection is achieved, and the dustproof effect of the support is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridges and building structures and provides a dustproof ball-shaped steel support. Background Art

[0002] The spherical seismic isolation device of the bridge is an important component of the bridge structure, mainly used to reduce the damage to the bridge caused by natural disasters such as earthquakes. The spherical steel bearing is generally composed of the upper seat plate, the lower seat plate, the ball crown lining plate and other parts. Among them, the ball crown lining plate is the core component of the spherical steel bearing, which undertakes multiple functions such as transferring loads, adapting to displacement and rotation angles. The ball crown lining plate component adjusts displacement and reduces vibration through surface contact with the upper bearing plate and the lower bearing plate. Its wear resistance and anti-pollution ability directly affect the overall life and stability of the bearing. In actual working conditions, it may be subject to the adhesion of impurities such as dust and gravel, resulting in increased wear, thereby reducing the service life of the bearing. The spherical steel bearing in the prior art is usually designed with a groove on the upper surface of the lower bearing plate, and a rubber sealing ring is installed in the groove to prevent external dust and debris from penetrating into the friction pair. The rubber sealing ring has a certain dust-proof effect, but with long-term use and environmental influences, the rubber sealing ring will gradually age, and its original elasticity will be significantly reduced. The rubber sealing ring and the ball crown lining plate cannot maintain a tight fit, and its inherent dust-proof ability will be significantly reduced, which increases the risk of the friction pair being affected by dust and gravel.

[0003] Therefore, improving the sealing structure of the spherical crown liner in the spherical steel bearing is of great significance to improving its performance and life. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a dust-proof spherical steel bearing, which can form a sealing effect on multiple levels, effectively reduce the entry of dust into the interior of the bearing, and further improve the service life and operational reliability of the spherical steel bearing.

[0005] A dustproof spherical steel bearing comprises an upper bearing plate, a spherical sliding plate, a lower bearing plate, a sealing ring and a spherical crown lining plate;

[0006] The upper support plate is arranged on the upper part of the spherical crown lining plate;

[0007] The spherical cap lining plate is arranged on the upper part of the lower support plate;

[0008] The upper surface of the lower support plate is provided with a concave spherical surface, and the concave spherical surface is provided with a spherical groove 1;

[0009] The spherical slide plate is embedded in the spherical groove 1; the spherical slide plate is placed at the lower part of the spherical crown lining plate to form a rotating pair;

[0010] The bottom of the spherical crown lining plate is provided with a second groove;

[0011] The cross-sectional structure of the sealing ring is in the shape of a mountain, and the upper part thereof is embedded in the second groove.

[0012] Furthermore, a flat stainless steel plate is welded underneath the upper support plate;

[0013] Furthermore, the plane slide plate is placed on the lower part of the plane stainless steel plate to form a sliding pair, and is embedded in the plane groove of the ball crown lining plate;

[0014] Furthermore, a planar sealing ring groove is provided on the upper surface of the spherical crown lining plate;

[0015] Further, the planar sealing ring is embedded in the planar sealing ring groove;

[0016] Furthermore, the upper surface of the lower support plate is provided with a groove three, which is located at the periphery of the spherical groove one and corresponds to the groove two in the upper and lower parts, so that the upper part of the sealing ring is embedded in the groove two and the lower part of the sealing ring is embedded in the groove three;

[0017] Further, the sealing ring is preferably polyurethane or rubber;

[0018] Furthermore, the cross-sectional view of the sealing ring is in the shape of a mountain;

[0019] Furthermore, the groove three is slightly larger than the lower dimension of the sealing ring, so as to provide the sealing ring with a certain displacement space;

[0020] Furthermore, the size of the groove three is 2-5 mm larger than the lower size of the sealing ring.

[0021] Furthermore, a lubricating layer may be applied to the surface of the sealing ring to improve the sealing performance of the sealing ring, reduce friction, and extend the service life of the sealing ring;

[0022] Preferably, the lubricating coating may be polytetrafluoroethylene, and a polytetrafluoroethylene (PTFE) film is coated on the surface of the sealing ring to improve the lubrication and wear resistance of the sealing ring.

[0023] Compared with the prior art, the dustproof ball steel support provided by the utility model has the following beneficial effects:

[0024] 1. Multi-layer sealing and dustproof design: The mountain-shaped sealing ring adopts a unique structural design, forming multiple sealing layers through multiple grooves and protrusions, which effectively improves the dustproof reliability. Each layer of the structure forms a sealing barrier, so that dust and impurities need to overcome these obstacles layer by layer to enter the inside of the sealing ring, increasing their penetration difficulty, ensuring the cleanliness of the key parts of the spherical bearing, thereby effectively protecting the integrity of the friction pair and the service life of the bearing.

[0025] 2. Enhanced adaptability and durability: The groove and groove three design of the seal ring provides a certain displacement space for the seal ring, so that it can maintain good sealing performance under the movement and load changes of the spherical support, and increases the adaptability and durability of the seal ring. In addition, by applying a lubricating coating such as polytetrafluoroethylene (PTFE) film on the surface of the seal ring, not only the lubricity of the seal ring is improved, friction is reduced, but also its wear resistance is enhanced, making the seal ring perform better in long-term use.

[0026] 3. Improved overall performance and stability: The mountain-shaped sealing ring effectively prevents the infiltration of external dust and debris through the tight fit between the ball crown liner and the lower support plate. Combined with the application of high-performance lubricating coating, the service life of the sealing ring is greatly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 It is a schematic diagram of the assembly of the sealing ring and the lower support plate in the first embodiment;

[0029] Figure 3 It is a schematic diagram of the assembly of the sealing ring and the lower support plate in the second embodiment;

[0030] Figure 4 It is a cross-sectional view of the ball crown lining plate of the utility model;

[0031] Figure 5 It is a cross-sectional view of the lower support plate of the utility model;

[0032] Figure 6 It is a schematic diagram of the sealing ring structure of the utility model;

[0033] Figure 7 It is a cross-sectional view of the sealing ring of the utility model.

[0034] In the figure: 1. upper support plate; 2. flat slide plate; 3. flat sealing ring; 4. spherical crown lining plate; 4-1. groove 2; 5. spherical slide plate; 6. sealing ring; 7. lower support plate; 7-1. spherical groove 1; 7-2. groove 3; 8. flat stainless steel plate. DETAILED DESCRIPTION

[0035] See also Figure 1-Figure 6 Embodiment 1: A dustproof ball steel support comprises an upper support plate 1, a flat stainless steel plate 8, a flat slide plate 2, a flat sealing ring 3, a ball crown lining plate 4, a spherical slide plate 5, a sealing ring 6, and a lower support plate 7.

[0036] A flat stainless steel plate 8 is welded to the bottom of the upper support plate 1;

[0037] The plane slide plate 2 is placed at the bottom of the plane stainless steel plate 8 to form a sliding pair, and is embedded in the plane groove of the ball crown lining plate 4;

[0038] The upper surface of the lower support plate 7 is provided with a concave spherical surface, and a spherical groove 7-1 is provided on the concave spherical surface, and the spherical slide plate 5 is embedded in the spherical groove 7-1;

[0039] The bottom of the spherical cap lining plate 4 is provided with a groove 2 4 - 1 , the upper portion of the sealing ring 6 is embedded in the groove 2 4 - 1 , and the lower portion of the sealing ring 6 is directly in close contact with the upper surface of the lower support plate 7 .

[0040] Embodiment 2, further, the upper surface of the lower support plate 7 is further provided with a groove 3 7-2, the groove 3 7-2 is located at the periphery of the spherical groove 1 7-1, and corresponds to the upper and lower positions of the groove 2 4-1, so that the upper part of the sealing ring 6 is embedded in the groove 2 4-1, and the lower part of the sealing ring 6 is arranged in the groove 3 7-2;

[0041] The size of the groove 3 7 - 2 is 2-5 mm larger than the lower size of the sealing ring 6 so as to provide the sealing ring 6 with a certain displacement space.

[0042] Embodiment 3: Furthermore, a lubricating layer may be applied to the surface of the sealing ring 6 to reduce the wear on the surface of the sealing ring and extend the service life of the sealing ring 6;

[0043] The lubricating coating may be polytetrafluoroethylene, and the polytetrafluoroethylene (PTFE) film is coated on the rubber sealing surface to improve the lubrication and wear resistance of the sealing ring 6.

[0044] The chevron-shaped sealing ring achieves a dust-proof effect with multiple sealing levels through its unique structural design. Its working principle is to configure multiple grooves and protrusions on the sealing ring. By forming a structure similar to the chevron, each layer of the sealing structure becomes a barrier. When pollutants try to pass through the sealing ring, they must overcome these physical obstacles formed by the grooves and protrusions layer by layer, which significantly increases the difficulty of pollutant penetration and improves the dust-proof effect. At the same time, the chevron-shaped design enables the sealing ring to fit tightly into the gap between the spherical crown lining plate and the lower bearing plate, effectively preventing the infiltration of external dust and impurities. The grooves on the sealing ring not only increase the sealing level, but also provide a certain displacement space, so that it can adapt to the tiny movements caused by temperature changes, mechanical vibrations and other external factors to maintain the sealing performance. In order to further improve the performance, a lubricating coating of polytetrafluoroethylene (PTFE) film is set on the surface of the sealing ring to reduce the wear of the sealing ring and improve the wear resistance, so that it can maintain stable performance during long-term use. Through these designs and material optimizations, the chevron-shaped sealing ring can not only achieve effective dustproof and durability, but also ensure the overall performance of the spherical bearing and long-term stable operation.

Claims

1. A dustproof spherical steel support, comprising an upper support plate (1), a spherical slide plate (5), and a lower support plate (7), characterized in that: It also includes a sealing ring (6) and a spherical cap lining plate (4); The upper support plate (1) is arranged on the upper part of the spherical crown lining plate (4); The spherical crown lining plate (4) is arranged on the upper part of the lower support plate (7); The upper surface of the lower support plate (7) is provided with a concave spherical surface, and a spherical groove 1 (7-1) is provided on the concave spherical surface; The spherical slide plate (5) is embedded in the spherical groove 1 (7-1); the spherical slide plate (5) is placed under the spherical crown lining plate (4) to form a rotating pair; The bottom of the spherical cap lining plate (4) is provided with a second groove (4-1); The cross-sectional structure of the sealing ring (6) is in the shape of a mountain, and the upper part thereof is embedded in the second groove (4-1).

2. The dustproof ball steel support according to claim 1 is characterized in that: The sealing ring (6) is made of polyurethane or rubber.

3. The dustproof ball steel support according to claim 1 is characterized in that: The upper surface of the lower support plate (7) is also provided with a groove three (7-2), the groove three (7-2) is located at the periphery of the spherical groove one (7-1), and corresponds to the groove two (4-1) in the upper and lower parts.

4. The dustproof ball steel support according to claim 3 is characterized in that: The upper part of the sealing ring (6) is embedded in the second groove (4-1), and the lower part of the sealing ring (6) is placed in the third groove (7-2).

5. The dustproof ball steel support according to claim 4 is characterized in that: The size of the groove three (7-2) is 2-5 mm larger than the lower size of the sealing ring (6).

6. The dustproof ball steel support according to claim 1, characterized in that: A lubricating coating is provided on the surface of the sealing ring (6).

7. The dustproof ball steel support according to claim 6 is characterized in that: The lubricating coating is polytetrafluoroethylene.

8. The dustproof ball steel support according to claim 1, characterized in that: It also comprises a flat stainless steel plate (8) and a flat slide plate (2); the flat stainless steel plate (8) is welded below the upper support plate (1); the flat slide plate (2) is placed at the bottom of the flat stainless steel plate (8) and is embedded in the flat groove of the spherical crown lining plate (4).

Images