Overview
Principles of Construction
Ball bearings are a new type of bearing developed on the basis of pot type rubber bearings. It is mainly composed of a sphere made of high-strength steel and a support seat surface. The sphere can freely rotate in various directions to adapt to the deformation of the structure. This design not only provides the advantages of high load-bearing capacity and large horizontal displacement of pot type rubber bearings, but also has the ability to adapt to large turning angles, making it very suitable for complex bridge structures such as wide bridges, slope bridges, inclined bridges, curved bridges, as well as large buildings such as high-rise buildings and factories
Product advantages
The product advantages of bridge ball bearings mainly include free rotation, strong bearing capacity, adaptability to large angles, good seismic performance, and long service life.
1. Free rotation: Bridge spherical bearings have the function of free rotation and can withstand lateral loads and angular displacements, which helps reduce the risk of damage to bridge structures in natural disasters.
2. Strong load-bearing capacity: Its design and manufacturing comply with national standards, with strong load-bearing capacity and stability, and can cope with various complex working conditions.
3. Adapting to large turning angles: Bridge spherical bearings transmit force through spherical surfaces with small rotational torque, making them particularly suitable for bearings with large turning angles. The designed turning angle can reach a certain range, making them very suitable for complex bridge structures such as wide bridges, sloping bridges, and curved bridges.
4. Good seismic performance: Spherical bearings can achieve good seismic performance, effectively reducing the dynamic response of bridges and the impact of earthquake disasters, ensuring that bridges can also maintain stability in natural disasters such as earthquakes.
5. Long service life: Using high-quality materials and strict manufacturing processes, bridge ball bearings have the advantages of strong durability and long service life.
Specification
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Product Name
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Bridge spherical bearings |
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The working principle of bridge spherical bearings mainly relies on the sliding between the spherical surface and the PTFE plate to achieve displacement and rotation.
Specifically, the bridge spherical bearing consists of two parts, the upper part is a spherical surface and the lower part is a ball seat. A low friction coefficient polytetrafluoroethylene (PTFE) sliding plate is filled between the spherical surface and the ball seat. This material has a small sliding friction coefficient, which can effectively reduce friction and improve the service life of the support. When the bridge is subjected to a load, the displacement of the spherical support is achieved by the sliding between the upper support plate and the planar PTFE plate. At the same time, by setting guide grooves or guide rings on the upper support plate, the one-way or multi-directional displacement of the support can be constrained, thereby making fixed supports, one-way movable supports, or two-way sliding supports.
In addition, the rotation angle of the spherical support is satisfied by the sliding between the spherical plate and the spherical PTFE plate. Due to the possible misalignment between the rotation center of the support and the rotation center of the upper structure, a second sliding surface may form between the upper support plate and the planar PTFE plate. According to the relative position between the upper structure and the center of rotation of the support, the direction of spherical rotation can be consistent or opposite to the direction of planar sliding. If two centers of rotation coincide, there will be no sliding on the plane |
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Product Structure
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Bridge spherical bearings are mainly composed of upper bearing plates, lower bearing plates, spherical crown lining plates, flat sliding plates, and spherical sliding plates.
Specifically:
Upper support plate: fixed on the bridge structure, providing support for the bearings and transmitting the vertical load of the bridge to the lower structure.
Lower support plate: usually embedded with a concave spherical surface, used for installing sliding plates and dispersing the support reaction force to the bridge piers and abutments.
Ball crown lining plate: located between the upper and lower support plates, it forms a rotating sliding surface with the sliding plate through a spherical chrome plating layer (or other material) to adapt to the angular deformation of the bridge.
Flat skateboard and spherical skateboard: used for sliding on flat and spherical surfaces respectively, meeting the displacement and rotation requirements of the support. The flat skateboard can slide relatively under the action of horizontal force, achieving horizontal displacement of the bridge; The spherical skateboard is matched with the crown liner to achieve the rotation of the support.
In addition, bridge ball bearings may also include components such as rubber sealing rings and dust covers to improve the sealing and durability of the bearings.
These components work together to make the bridge ball bearings have the advantages of high bearing capacity, flexible rotation, and strong displacement adaptability, and are widely used in bridge engineering. |
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Applications
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Bridge ball bearings are mainly used in complex bridge structures such as curved bridges, sloping bridges, inclined bridges, wide bridges, and long-span bridges.
Due to its reliable force transmission, consistent rotational performance in all directions, strong bearing capacity, large horizontal displacement, and ability to adapt to large turning angles, spherical bearings are particularly suitable for these complex bridge structures to ensure their stability and safety. In addition, due to the fact that the pressure bearing components of spherical bearings do not use rubber blocks, there are no effects such as low-temperature brittleness of rubber, making it particularly suitable for low-temperature areas. |
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Product parameter adjustment
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Production can be carried out according to the drawings, or customized processing can be carried out according to customer needs |
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Program Design
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We can provide bridge bearing design solutions |
Company Profile
Hengshui Siwo New Material Technology Development Co., Ltd. is a professional manufacturer of seismic isolation and reduction, integrating research and development, production, and sales. It mainly involves the fields of construction and bridges, covering building steel structure bearings, bridge bearings, expansion devices, seismic ball steel bearings, seismic isolation rubber bearings, basin type bearings, yield type dampers, displacement type dampers, TMD tuned mass dampers, buckling restrained supports, etc.
The company currently has 78 fixed employees, including 18 technical personnel and 12 personnel with senior and intermediate professional titles. The company has established long-term cooperative relationships with universities such as Tsinghua University, Tongji University, Harbin Institute of Technology, Hunan University, Chongqing University, as well as design institutes such as Beijing Institute of Architecture, East China Institute, China Construction Southwest Institute, and China Aviation Institute. It is committed to scientific and technological innovation, product innovation, and keeping up with the pace of university industry research cooperation. At the same time, it is committed to structural design, engineering calculations, finite element analysis, and product trial testing cooperation, and is committed to new product research and development, making products more refined, optimized, and strong.
The company covers an area of over 270 acres (180000 square meters), including workshops for mechanical processing, rubber products, product assembly, and other processes. There are more than 50 sets of production equipment, including CNC lathes, CNC milling machines, CNC drilling machines, CNC cutting equipment, vulcanizing machines, internal mixers, and open mixers, to meet the processing needs of various products.
The company's testing center has excellent equipment and complete testing facilities. Equipped with trained and qualified professional quality inspectors, the products are inspected throughout the entire process to ensure that unqualified raw materials do not enter the factory, unqualified semi-finished products do not transfer to another process, and unqualified products do not leave the factory.
Driven by research and development, we strive to refine, optimize, and strengthen our products. Our consistent policy is to provide high-quality products and services that bring economic benefits to our enterprises while creating greater social benefits.
Why Choose Us
Advanced production equipment
Adequate inventory
praise from customers
FAQ
Q1: Are you trading company or manufacturer?
A:We are manufacturer.
Q2: What's your MOQ?
A:Normally it's 500 meters for one size and one color.
Q3: What's your output?
A:500,000 meters per week
Q4: How long is your delivery time?
A:Generally it is 5-10 days if the goods are in stock. And for mass production it takes 15-20 days.
Q5: May I have samples ? is it free or extra?
A:Yes, we are happy to explore new product with our customers. If the sample need to be customized, please contact us. For the regular item, we supply 3-5meters samples for free. And customer pay the sample freight only.
Q6: Whether to support customized services?
A:We can customize according to drawings or samples,Production mold independent research and development manufacturing, independent transformation of production equipment.
Q7: What is your terms of delivery?
A:EXW.FOB.CFR.CIF,DDU.etc.
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