CN102380908A

CN102380908A - Stretch-draw omission-preventing method for non-ballast track slabs

Info

Publication number: CN102380908A
Application number: CN2011102157723A
Authority: CN
Inventors: 黄杰; 周琴
Original assignee: China Railway No 5 Engineering Group Co Ltd; Sixth Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Current assignee: China Railway No 5 Engineering Group Co Ltd; Sixth Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2012-03-21

Abstract

The invention discloses a stretch-draw omission-preventing method for non-ballast track slabs. The method comprises the following steps: arranging steel balls (1) on front steel plates of jacks (2) before prestress stretch-draw construction of track slabs (3); during a stretch-draw process, applying pressure on peripheries of anchor holes (5) of the track slabs (3) by the jacks (2), thereby forming pressing marks (4); and taking the pressing marks (4) as marks of the finished stretch-draw process of the track slabs. Four steel balls (1) having diameter of 2mm are arranged on the front steel plate of each of the jacks (2); two track slabs (3) are simultaneously subjected to the stretch-draw process each time; two jacks (2) are used for each of the track slabs (3); and four jacks (2) and sixteen steel balls (1) are arranged in total. A marking method for forming the pressing marks by automatically stretching and drawing is adopted, thereby achieving high production efficiency, saving a large amount of labor force, and efficiently avoiding the phenomena of insufficient drawing and drawing omission.

Description

Fragment-free track slab stretch-draw leakproof detecting method

Technical field

The present invention relates to a kind of fragment-free track slab stretch-draw leakproof detecting method.

Background technology

CRTS I type fragment-free track slab stretching construction, method commonly used are to adopt tensioning system equipment to carry out stretch-draw by technical conditions and drawing related request.After the stretch-draw of track plate is accomplished, lid " stretch-draw completion " Zhang Jinhang mark in track plate side, this method is not only lost time, and the labor manpower increases cost, if sign is unclear, also causes less easily and draws, leaks and draw phenomenon.

Summary of the invention

The technical problem that the present invention will solve is, a kind of fragment-free track slab stretch-draw leakproof detecting method is provided, and overcoming losing time that prior art exists, the labor manpower increases cost and causes less easily and draw, leak and deficiency such as draw.

The present invention adopts following technical scheme: before the track slab prestress stretching construction, on the steel plate of jack the place ahead, steel ball is set, in stretching process, applies pressure to through jack and form impression around the anchor recess of track plate; This impression is as the sign of the track plate being accomplished tension process.

On each jack the place ahead steel plate, evenly arrange the steel ball of four diameter 2mm.

Carry out the stretch-draw of track plate by designing requirement.During stretch-draw, two blocks of track plates of a simultaneous tension, every block of track plate uses two jack, amounts to four jack, 16 steel balls are set.

Be employed in the mode that steel ball is set on the stretch-draw jack; Directly in track plate stretching process, around anchor recess, form the identification method of impression; Solve conventional stretch-draw and need use artificial this loaded down with trivial details technology of " stretch-draw completion " mark that identifies in the plate side; Production efficiency is high, saves a large amount of labours, and can effectively prevent to draw less, leak the generation of drawing phenomenon.

Description of drawings

Fig. 1 is provided with the sketch map of steel ball for use jack of the present invention;

Fig. 2 forms the impression design sketch automatically for stretch-draw of the present invention.

The specific embodiment

Embodiments of the invention: use YT-I type track plate 3 to control tensioning system equipment automatically on request and carry out stretch-draw.Many according to track plate quantity; Actual conditions such as tension process institute elapsed time is long; Considering the stretch-draw quality control and practicing thrift the engineering time and set out; The method of taking on stretch-draw jack 2 the place ahead steel plates, evenly to arrange four 2mm steel balls 1 is constructed, and in stretching process, around the anchor recess 5 of track plate 3, forms stretch-draw impression 4 automatically, and this impression can be used as the sign to the stretch-draw performance.

Claims

1. fragment-free track slab stretch-draw leakproof detecting method; It is characterized in that: before track plate (3) tensioning construction; On the steel plate of jack (2) the place ahead, steel ball (1) is set, the anchor recess (5) that in stretching process, brings pressure to bear on track plate (3) through jack (2) forms impression (4) all around; This impression (4) is as the sign of the track plate being accomplished tension process.

2. fragment-free track slab stretch-draw leakproof detecting method according to claim 1 is characterized in that: the steel ball (1) that four diameter 2mm are set on the steel plate of each jack (2) the place ahead.

3. fragment-free track slab stretch-draw leakproof detecting method according to claim 1 and 2; It is characterized in that: two blocks of track plates of a simultaneous tension (3); Every block of track plate (3) uses two jack (2), amounts to four jack (2), arranges 16 steel balls (1).