Products LYQZ Ball Type Stell Bearing
LYQZ series ball type steel bearing is a spherical bearing based on QZ general series with addition of tension device. Not only

has the function of pressure-bearing, turning, displacement of general series spherical bearing, but also can reduce the balance

weight of beam ends, resist the vertical tension and transversal shear force caused by centrifugal force, transversal sway force,
horizontal wind force, earthquake, load bias and so on, also can reliably solve the problem such as earthquake, typhoon, load bias,
reduce the tragedies like Harbin Bridge toppled, using this bearing can make the force transfer process and displacement recovery
of beam body more stable, thereby to ensure the security of bridge and improve the service life. Main applicable to curved bridge,
steel box bridge with serious load bias and overtopping carrying center position, also can be used on earthquake fortification of
common bridge with intensity lower than 8 degree areas.
After repeatedly calculating and finite element analyzing by the technology developers of our company, this product has the
advantages of light weight, low height, good effectiveness, convenient installation and maintenance.
Technical Performance Vertical bearing capacity is classified into 24 levels:
1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 6000, 7000, 8000, 9000, 10000, 12500, 15000, 17500, 20000, 225000, 275000,
30000, 4000, 5000, 6000,
Horizontal bearing capacity:
Ratio of horizontal load bearing capacity of GD each direction of fixed bearing and DX single-direction movable bearing to vertical
load bearing capacity is 10%
Bearing displacement:
The displacement of DX single-direction moveable bearing and SX double-direction movable bearing are classified as 100,
150mm according to different carrying capability of bearing.
Displacement of transverse direction of bridge of DX double-direction movable bearing: 3mm,
Displacement of transverse direction of bridge of SX double-direction movable bearing: 40mm, ( can be designed in addition
according to requirements)
According to the requirements of beam body, DX single-direction movable bearing can apply to beam body with moving at
longitudinal direction fixing at transverse direction of bridge or moving at transverse direction fixing at longitudinal direction.
Value of designed friction coefficient of bearing:
Normal temperature -25~+60棩u0.03
Low temperature -40~-25棩u0.05
Applicable range of bearing gradient:
Spherical steel bearing has the features of applicable to large span, large gradient and curved bridge. Bearing can automatically
accommodate the gradient requirement within 6, exceed 6 ones can be set by pre-embedding steel plate to beam bottom, or
enforced by according to the requirements of actual processing gradient by top bearing plate. The best choice is by special design to
realize the use for large gradient, but advanced providing the installation location drawing is needed for convenience of design and
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