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Novel track layer for urban track traffic engineering and its construction method

a technology for urban track traffic and construction methods, applied in railway track construction, construction, roads, etc., can solve the problems of reducing the construction space of track sections laying on the main line, affecting the appearance and performance of the structure, and reducing the working space in the narrow space, so as to save energy resources, improve work efficiency, and reduce construction costs

Inactive Publication Date: 2021-10-28
CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a new track layer for urban track traffic engineering, and its construction method. The track layer is designed to solve the problem of needing temporary running tracks in the current track construction, and to improve transportation efficiency and safety at the same time. The track layer includes lifting and walking trolleys, a connecting truss beam, crawler running mechanisms, and supporting structures. The track layer can be switched between sections with and without a main line track through the use of horizontally extending and vertically liftable supporting structures. The track layer also includes a latch hook for connection to a towing vehicle, hydraulic pumps and power supply cables for operational control of each lifting and walking trolley, and a hoisting car for precise lifting and positioning of track materials. The technical effects of the invention are improved efficiency and safety in track construction, reduced costs, and improved transportation efficiency.

Problems solved by technology

Due to the narrow space of an underground tunnel structure of urban track transit engineering, the mounting of the temporary running tracks reduces a working space in the narrow space.
The lateral supports often collide with the temporary running tracks, which reduces the construction space for track section laying on the main line.
In the meantime, a building structure needs to be drilled with holes to fix running track buttresses when the temporary running tracks are mounted, which affects the appearance and performance of the structure to some extent.
When encountering special sections such as stations and civil air defense doors, due to the limitation of structural boundaries, the change in track distances of the temporary running tracks causes the discontinuity of the temporary running tracks, which not only occupies the mounting position of the main line track, but also interrupts the construction of the main line track due to the span change requirements of the track layer, thereby occupying the effective time and space of the track construction to varying degrees.
Due to the need to lay the temporary running tracks, the operation procedures are increased for the construction of the main line track, the construction investment is increased, and the construction cost and labor intensity are increased.
In summary, the existing track layer for track construction is widely used in practical applications, but it brings many constraints and influences to the construction of the main line.

Method used

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  • Novel track layer for urban track traffic engineering and its construction method
  • Novel track layer for urban track traffic engineering and its construction method
  • Novel track layer for urban track traffic engineering and its construction method

Examples

Experimental program
Comparison scheme
Effect test

example i

ion Preparation, Track Section Hoisting and Mounting Works of the Novel Track Layer

[0096]1. Switching of the Novel Track Layer from a Running State to a Track Section Hoisting State.

[0097]Referring to FIGS. 1-6, the main structure design of the present invention lies in that: the novel track layer consists of two lifting and walking trolleys and a connecting hoisting truss beam.

[0098]Referring to FIGS. 5-20, each lifting and walking trolley consists of a horizontal frame beam and a running car. The horizontal frame beam consists of two longitudinal beams, four crossbeams and an upper reinforcing structure (37). Each of the two longitudinal beams acts both as a structural beam of the horizontal frame beam and as a guide column for the running car to move back and forth. Each crossbeam acts both as a structural beam of the horizontal frame beam and as a guide sleeve structure for a vertical supporting structure of the lifting and walking trolley to extend horizontally and laterally. A...

example ii

nd Mounting Construction of Prefabricated Track Plate of the Novel Track Layer

[0131]the laying construction of an urban rail transit track bed is generally carried out after the construction of an interval track bed cushion is completed. The track bed plate is a prefabricated concrete plate generally having a length of 5800 mm (normal version). A curved controlling plate generally has a length of 4500 m to 5000 mm. In order to transport the prefabricated plate conveniently, it is general to mount a steel rail fastener in time after a track bed plate of 25 m to 50 m is layed, to form a transport passage. When the track plate is layed to over 100 m, the track plate and the track state are adjusted. The track plate and the track state are fixed by pouring self-compacting concrete or other mortar material under the track plate to form a track line. Therefore, the laying of the track plate is a key procedure.

[0132]1. Unloading, Hoisting, Moving and Positioning of the Track Plate:

[0133]a....

example iii

Working Surfaces of the Novel Track Layer

[0153]Referring to FIGS. 20-37, the track construction is generally centered on a track-laying base, and upper and lower lines are constructed in both directions. The track switch as key equipment for track steering is constructed in advance. The transfer of working surfaces of the novel track layer is realized by layed track switches and single crossovers. There are three positions in working surface transfer, on the way to a new working surface 1, a new working surface 2 and a new working surface 3:

[0154]1. withdrawing horizontal extension devices of the vertical supporting devices of the No. 1 and No. 2 lifting and walking trolleys of the novel track layer back to a running transfer position; withdrawing the vertical supporting device back to an upper limit transfer running position, and locking; dismounting a power supply of the novel track layer, and rolling a cable into the cable reel; disconnecting the track running wheels of the novel...

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PUM

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Abstract

It relates to the engineering technology science, in particular to a novel track layer for urban rail traffic engineering and its construction method. The novel track layer comprises lifting and walking trolleys, a connecting truss beam, a track running mechanism and a supporting structure. Horizontal extending and vertical supporting structures of each lifting and walking trolley are operated firstly so as to lift the whole novel track layer to a height at which a track material is hoisted and unloaded. A hoisting car is used to lift up the track material to leave from a flat trunk and a material supporting cushion. The novel track layer continues to walk forward to a designed mounting position of a track section, and then the track material is unloaded. Steel tracks are connected and a temporary track section support is mounted to fix a newly mounted track section.

Description

TECHNICAL FIELD[0001]The present invention relates to engineering technology science, in particular to a novel track layer for urban track traffic engineering and its construction method.BACKGROUND ART[0002]At present, in the track construction of urban track transit engineering in China, track layer equipment mainly includes three types: a fixedly assembled door type structure, a manual and hydraulic fixed-distance variable-span door type structure and an automatically retrieved electric stepless variable-span door type structure. Temporary running tracks need to be layed for the three types of track layers to run. The temporary running tracks are pre-layed on tunnel sidewalls on both sides of a main line or a structure floor, with track distances being generally 2800 mm, 3000 mm, 3100 mm, 3800 mm, etc. The temporary running tracks are fixed on the tunnel sidewalls or the structural floor by special steel structural buttresses. Due to the narrow space of an underground tunnel struc...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E01B29/16
CPCE01B29/16
Inventor ZHENG, KANGHAIHUANG, XINHAN, JIANDONGLIU, XISHENGSUN, JUNXIZHAO, WENJUNXU, MINGFACHEN, FUPING
Owner CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD
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