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Ballastless track board lifting support

A ballastless track and track slab technology, applied in tracks, track laying, track maintenance, etc., can solve problems such as increasing construction difficulty, local track slab crack damage, and insufficient temporary support stability.

Active Publication Date: 2013-12-11
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing problem is that a temporary support method is currently used, which requires special hoisting machinery to lift the track slab, and at the same time, the stability of the temporary support is insufficient, which is likely to cause crack damage to the local track slab and increase the difficulty of construction The problem

Method used

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  • Ballastless track board lifting support
  • Ballastless track board lifting support
  • Ballastless track board lifting support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: as figure 1 as shown,

[0021] A lifting bracket for a ballastless track slab, comprising: a threaded rod 2, a plurality of buckles, two fixing nuts 4 matched with the threaded rod 2, and four support rods 1 made of channel steel;

[0022] The ends of the two adjacent support rods 1 are all connected to one of the buckles in rotation, and the four support rods 1 are connected end to end in turn to form a quadrilateral support frame; the two adjacent support rods in the support frame The lengths of the support rods 1 are equal;

[0023] On the support frame, a set of symmetrical buckles is provided with a through hole for the threaded rod 2 to pass through, and the threaded rod 2 passes through the two through holes and the buckle at the same time. Socketing, the two fixing nuts 4 are arranged at both ends of the threaded rod 2 for positioning the two buckles;

[0024] In another set of vertices, one of the vertices is fixed on the base plate through the...

Embodiment 2

[0026] Embodiment 2: as Figure 2 to Figure 6 as shown,

[0027] A lifting bracket for a ballastless track slab, comprising: a threaded rod 2, a plurality of buckles, two fixing nuts 4 matched with the threaded rod 2, and four support rods 1 made of channel steel;

[0028] The ends of the two adjacent support rods 1 are all connected to one of the buckles in rotation, and the four support rods 1 are connected end to end in turn to form a quadrilateral support frame; the two adjacent support rods in the support frame The lengths of the support rods 1 are equal;

[0029] On the support frame, a set of symmetrical buckles is provided with a through hole for the threaded rod 2 to pass through, and the threaded rod 2 passes through the two through holes and the buckle at the same time. Socketing, the two fixing nuts 4 are arranged at both ends of the threaded rod 2 for positioning the two buckles;

[0030] In another set of vertices, one of the vertices is fixed on the base plat...

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Abstract

The invention relates to the field of communication and transportation, in particular to a ballastless track board lifting support. The ballastless track board lifting support comprises a threaded rod, a plurality of buckles, two fixing nuts matched with the threaded rod, and four supporting rods made of channel steel; the ends of two adjacent supporting rods are rotationally connected with one buckle, and the four supporting rods are connected end to end in sequence to form a quadrilateral supporting frame; the lengths of two adjacent supporting rods in the supporting frame are the same; the threaded rod penetrates through two through holes in one group of the symmetrical buckles in the support at the same time to be connected with the through holes in a sleeved mode, and the two fixing nuts are arranged at the two ends of the threaded rod to be used for positioning the two buckles; in another group of vertexes, one vertex is fixed onto a base board through one buckle, and the other vertex is fixed onto a truck board through one buckle. According to the ballastless track board lifting support, concentrated stress on the damaged track board in a lifting process is reduced, and therefore the possibility that the track board is damaged in a lifting repair process is further reduced.

Description

technical field [0001] The invention relates to the field of transportation, in particular to a ballastless track slab lifting bracket. Background technique [0002] The ballastless track is to lay the track slab on the base plate, and the sleeper itself is poured with concrete, which can reduce maintenance, reduce dust, and beautify the environment. The train speed can reach more than 200 kilometers per hour. [0003] In recent years, ballastless track has been adopted as a new track technology for high-speed railways, and subgrade settlement diseases have begun to appear. Subgrade settlement disease refers to uneven settlement of the subgrade under long-term heavy pressure and vibration during long-term use, resulting in changes in the geometric shape of the longitudinal section of the line. This is contrary to the high smoothness required by the high-speed railway design. Therefore, in order to improve the stability and smoothness of the line, it is required to restore t...

Claims

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Application Information

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IPC IPC(8): B66F3/08E01B29/00
Inventor 任娟娟杨荣山王平刘学毅赵坪锐郭利康柳恒张四放
Owner SOUTHWEST JIAOTONG UNIV
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