Fast mounted and dismounted tooth-embedded resistance-free sliding ball support

Abstract

The invention discloses a concrete monorail rail beam movable support, and particularly relates to a fast mounted and dismounted tooth-embedded resistance-free sliding ball support. The fast mounted and dismounted tooth-embedded resistance-free sliding ball support comprises an upper support (1), a spherical crown liner plate (2), a spherical tetrafluorohydrazine sliding ring (3), a movable sliding block (4), a tetrafluorohydrazine sliding plate (5), a pressing plate (6) and a lower support (7); the upper support (1) is provided with four sawtooth-shaped inner teeth to constitute an anti-pull,anti-shear and anti-twisting device with the movable sliding block (4) with four sawtooth-shaped outer teeth; the spherical crown liner plate (2) of the upper support (1) and the spherical tetrafluorohydrazine sliding ring (3) embedded in the movable sliding block (4) constitute an inner-stress-free device; and the pressing plate 6 and the lower support 7 constitute a sliding groove of the movable sliding block 4. According to the support, the problems that the rail beam movable support bears composite stress such as pulling, shearing, pressing and twisting are effectively solved, and the stress acting on an anchor box and a bridge pier is eliminated; the movable support is compact in structure, is quickly mounted and dismounted, and directionally moves without resistance and deviations;and the support is also suitable for being applied to other bridges.

Description

technical field [0001] The invention relates to a concrete straddle type monorail track beam movable bearing, which is a sliding ball bearing with high positioning accuracy, no resistance in all-round movement, and no deviation in the direction of expansion and contraction of the track beam, and is convenient and quick to install and disassemble. Quick-release jaw type frictionless sliding ball bearing. technical background [0002] In recent years, straddle-type monorail rail transportation is becoming an emerging intercity transportation mode in my country. The locomotive rides on the concrete monorail rail beam. It is connected to the bridge pier. According to the relevant national engineering construction acceptance specifications, the installation accuracy requirements for the joints of each track beam are as follows: the height difference between the running surface, the guide surface and the stable surface should be controlled below 2mm, so the expansion and contractio...

AI Technical Summary

Problems solved by technology

[0006] 1. The installation accuracy of the movable support determines the error of the dislocation at the joint of the track beam. The middle spherical crown plate and the movable slider undertake the connection between the upper and lower supports. There are three pairs of movable pairs, no positioning reference, and on-site installation The conditions are relatively bad, and it is impossible to locate at all

2. After the movable support is installed, it is difficult to ensure that the moving space of the movable slider in the groove of the lower support is the same, which causes the track beam to withstand the beam with a small gap after expansion and generate internal stress. Lateral expansion is prone to cracking and failure of concrete beams

[0007] 3. The upper support, the middle spherical crown plate, the movable slider and the lower support all move relative to each other. There is no installation reference during installation, and there are two sets of movable supports under each beam. A slight deviation in installation will make the track Misalignment at beam joints exceeds standard requirements

[0008] 4. It is difficult to process the surfaces in the square groove of the lower support. The support is cast steel, especially the four corners cannot remove the casting slag formed after casting and repair defects. The sharp corners of the casting are prone to stress concentration and cracks. Surface roughness and dimensional accuracy requirements cannot be guaranteed

[0009] 5. The use environment of the support is harsh, and the stainless steel sheets used as the sliding surface will wear and rust soon after use, and the damage cannot be repaired or replaced on site, only the support can be replaced

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