Fast-assembled-disassembled tooth-embedding-type unstressed fixed ball supporting base

Abstract

The invention discloses a concrete monorail track beam fixed support, which is a quick loading and unloading tooth-embedded stress-free fixed ball support. The support includes an upper support (1), a spherical crown-shaped lining plate (2), a spherical surface PTFE sliding ring (3), lower support (4). The upper support (1) has four zigzag inner teeth and the lower support (4) with four zigzag outer teeth together constitutes a tensile, shear and torsion device; it is integrated with the upper support (1) The spherical crown-shaped liner (2) and the spherical tetrafluoro sliding ring (3) embedded on the lower support (4) together constitute an anti-vibration and relief or stress relief device. The support effectively solves the tension and shear resistance of the straddle-type monorail track beam support and eliminates or reduces internal stress, and also eliminates the internal stress acting on the anchor box and the column. The straddle-type monorail track beam support has a compact structure and realizes quick assembly and disassembly. The bearing is also suitable for bridge bearings, expanding the scope of application.

Description

technical field [0001] The invention relates to a concrete straddle-type monorail track beam fixed support, which is a fast-loading and dismounting tooth-embedded stress-free fixing that is not only resistant to tension, shear, torsion, and various composite stresses, but also can be quickly assembled and disassembled. ball mount. technical background [0002] In recent years, the construction of urban rail transit is on the rise in my country, and the straddle-type monorail rail transit is emerging as a new urban transportation mode. The anchor box is connected to the bridge pier. The support not only bears the gravity from the track beam and the locomotive, but also bears the lateral force generated by the locomotive guide wheels on both sides of the track beam. The support is simultaneously compressed, pulled, sheared and The effect of torsion and other compound stresses. [0003] At present, slab, basin and spherical bearings are commonly used in domestic bridges. The wo...

AI Technical Summary

Problems solved by technology

[0006] 1. The complex stress borne by the straddle-type monorail track beam support cannot be eliminated or reduced, thereby shortening the service life of the support and posing certain safety hazards

[0007] 2. The structure is complex, the assembly precision is high, and it is not easy to disassemble. It is difficult to ensure the concentricity between the spherical surface of the lower support and the groove under the flange, resulting in uneven force and inconvenient on-site maintenance.

[0008] 3. The groove under the flange of the lower support cooperates with the lateral arched rocker shaft, which makes the outer edge of the upper support larger in size, and it is difficult to reach more than 70% of the contact area after assembly. The overall size is large and the manufacturing cost high

[0009] 4. When the spherical surface of the lower support is assembled with the groove under the flange, the concentricity and precision requirements are high. During the operation, the spherical surface is subjected to the load of the locomotive, the self-weight load of the track beam or the bridge, and the force on the groove cannot be eliminated or Reduced, prone to fatigue damage or cracks due to stress concentration due to long-term vibration and alternating loads

[0010] 5. For a straddle-type monorail curved beam with a certain inclination, the flange groove of the lower support and the inner side of the rocker shaft are subjected to compressive stress and the outer side is subjected to tensile stress. The uneven wear increases the wear speed; the lateral torque is small, and after damage Cannot be repaired, only replaced as a whole

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