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

Abstract

The invention discloses a concrete single-track track beam fixed supporting base which is a fast-assembled-disassembled tooth-embedding-type unstressed fixed ball supporting base. The supporting basecomprises an upper supporting base (1), a ball crown shape liner plate (2), a ball surface tetrafluorohydrazine sliding ring (3) and a lower supporting base (4). The upper supporting base (1) providedwith four jagged internal teeth forms a tensile shear and torsion-resistant device with the lower supporting base (4) provided with four jagged external teeth. The ball crown shape liner plate (2) connected with the upper supporting base (1) into a whole and the ball surface tetrafluorohydrazine sliding ring (3) embedded into the lower supporting base (4) constitute an anti-vibration and relief or stress elimination device. According to the concrete single-track track beam supporting base, the effect that a straddle type single-track track beam is tensile-resistant and shear-resistant, eliminates or reduces the internal stress, meanwhile, also eliminates the internal stress acting on an anchor box and a stand column is achieved effectively; and the straddle type single-track track beam supporting base is compact in structure, rapid assemble and disassembly are achieved, the supporting base is also suitable for a bridge supporting base, and the application range is extended.

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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