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What are the characteristics of the JQZ series ball bearings
2025-09-29The JQZ series ball bearings have the characteristics of novel structure, excellent material, and easy installation, as follows: 1. Unique structural design: adopting a unique rotating bar structure to enhance the rotation and stress performance of the support. The rotating surface of the spherical cap is covered with stainless steel, further improving the rotational performance and enabling the
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What is the bearing capacity of spherical bearings for railway rail transit bridges
2025-09-23The bearing capacity of spherical bearings for railway rail transit bridges is its core performance indicator, which needs to be strictly matched with complex working conditions such as bridge self weight, train load (including dynamic load), temperature deformation, earthquake action, etc. The bearing capacity ranges from hundreds to thousands of tons, depending on the support type, structural de
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What are the maintenance methods for the comb plate expansion device
2025-09-16The maintenance of the comb plate expansion device is the key to extending its service life, ensuring bridge traffic safety and structural stability. It needs to be carried out around the four core goals of "preventing blockage, corrosion, loosening, and timely repair", combined with daily inspections, regular maintenance, and special inspections, to form a full cycle management system. The specif
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What is the main purpose of special bearings for highway bridges to solve
2025-09-08Special bearings for highway bridges are specialized bearings designed for complex working conditions or special functional requirements that conventional bearings cannot meet. Their core function is to solve the problems of bridge structural deformation, force transmission, environmental adaptation, and functional expansion that conventional bearings cannot cope with, ensuring the safety, stabili
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How does the comb plate expansion device perform in low-temperature environments
2025-09-03The performance of the comb plate expansion device in low temperature environments (usually referring to temperatures ≤ -10 ℃, and can be as low as -30 ℃ in severe cold areas) is influenced by three core factors: material characteristics, structural design, and installation processes. The overall performance shows the characteristic of "retaining rigid advantages but highlighting flexible shortcom
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Why is it said that the multi-directional displacement adaptability of spherical bearings in railway
2025-08-26The reason why the spherical bearings of railway rail transit bridges are considered to have good adaptability to multi-directional displacement lies in their unique structural design, force transmission mechanism, and material properties. They can correctly match the rigid requirements of railway bridges for "multi-dimensional displacement compensation" under complex working conditions (such as t
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What factors affect the friction coefficient of friction pendulum ball bearings for highway bridges
2025-08-19Friction pendulum ball bearings (FPS bearings) for highway bridges are a new type of seismic isolation bearings suitable for large-span and high seismic demand bridges. Their core characteristics revolve around three dimensions: seismic isolation performance, bearing capacity, and adaptability, as follows:
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What are the applications of modular single joint expansion devices on urban bridges
2025-08-12Modular single joint expansion devices are widely used in urban bridges, and their design features (suitable for small and medium displacement, compact structure, and good driving smoothness) are highly compatible with the operating environment and functional requirements of urban bridges. The main application scenarios include the following:
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