What are the characteristics of the JQZ series ball bearings
The 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
The 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 support to better adapt to the rotational requirements of the bridge under different working conditions.
2. Good material performance: The wear-resistant material selected is modified high molecular weight polyethylene, which has good wear resistance, sliding performance, and self-lubricating properties, and can effectively improve the service life of the support and reduce maintenance costs. At the same time, the use of high-quality materials has increased the design surface pressure, reducing the size and weight of the support while ensuring its bearing capacity, thereby lowering the project cost.
3. Strong bearing capacity: This series of bearings has 33 levels of vertical bearing capacity according to design requirements, ranging from 1.0MN to 70MN, which can meet the different bearing needs of various highways, municipal and rail transit bridges.
4. Reasonable classification of horizontal bearing capacity: The design horizontal bearing capacity of fixed bearings in all directions and unidirectional active bearings in the non active direction is divided into three levels. The JQZ (I) type is 10% of the vertical bearing capacity of the bearings, the JQZ (II) type is 15%, and the JQZ (III) type is 22.5%, which can be applied to bridges in areas with different seismic intensities.
5. Flexible rotation: The design angle of the support shall not be less than ± 0.02rad, which can adapt to the angle generated by the bridge under temperature changes, vehicle loads and other factors, ensuring the stability and safety of the bridge structure.
6. Good displacement performance: The displacement in the transverse direction of the one-way movable support and the displacement in the transverse direction of the two-way movable support when placed horizontally are ± 40mm. The displacement in the transverse direction of the one-way movable support and the displacement in the longitudinal direction of the two-way movable support are divided into ± 50mm, ± 100mm, ± 150mm, ± 200mm, ± 250mm, and ± 300mm, which can meet the displacement requirements of the bridge under different working conditions.
7. Wide temperature range: The temperature range for normal temperature bearings is -25 ℃~+60 ℃, while for cold resistant bearings it is -40 ℃~+60 ℃. They can be used under different climatic conditions and have strong regional adaptability.
8. Low friction coefficient: The designed friction coefficient is not greater than 0.03, and with the use of lubricating silicone grease, it can effectively reduce the friction force of the support during sliding, improve the service life and operational stability of the support.
9. Easy installation and maintenance: The accessory components are flexibly designed and connected to the pier and beam using sleeves and anchor bolts. The installation process is simple and convenient, and later maintenance is also relatively easy.
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