CN201695285U

CN201695285U - Tensioning lock for longitudinal connection of ballastless track slab

Info

Publication number: CN201695285U
Application number: CN201020233304XU
Authority: CN
Inventors: 王子纯; 姚勰; 吴荣美; 陈子洪; 徐亚东; 陈彩云
Original assignee: Jiangsu Dongqiang Co Ltd
Current assignee: Jiangsu Dongqiang Co Ltd
Priority date: 2010-06-18
Filing date: 2010-06-18
Publication date: 2011-01-05
Anticipated expiration: 2020-06-18

Abstract

The utility model discloses a tensioning lock for longitudinal connection of ballastless track slabs, which comprises a tensioning lock body. The tensioning lock body is of a frame structure, the two side edges of the tensioning lock body of the frame structure are tensioning ribs, and the two ends of the tensioning lock body are provided with a tensioning seat; the tensioning seat is provided with a tensioning slot of an open slot shape; and an insulating spacer is arranged in the tensioning slot. The tensioning ribs and the tensioning seat of the tensioning lock body are cast into a whole. The utility model can not only conveniently adjust the tensile force among track slabs, but also has the excellent connection insulating property. Therefore, the utility model can be widely applied in the laying of ballastless tracks of high-speed railways.

Description

Fragment-free track slab vertically connects the stretch-draw lock

Technical field

The utility model relates to the ballastless track of high-speed railway technical field, relates in particular to vertical stretch-draw connector of fragment-free track slab.

Background technology

Traditional railroad track is made up of two parallel steel rails usually, rail is fixed on the sleeper, the road-metal that sleeper is paved into for small crushed stone down, this traditional tiny fragments of stone, coal, etc. track that has has the advantages that laying is easy, comprehensive cost is cheap, but easy deformation, maintenance are frequently, the railway ballast efflorescence is serious, and train speed is restricted, thereby is unsuitable for running at high speed of train.

Plate-type ballastless track is that prefabricated track plate directly is positioned on the concrete bed, adjusts the track plate by filling asphalt concrete material between track plate and base, guarantees to lay precision.Non-fragment orbit is a core with the pre-track plate, and its track plate is main carrying and force transferring part, has the double attribute of sleeper and railway roadbed; 60 prestressed reinforcements of track plate landscape configuration vertically dispose 6 finish rolling deformed bars, are used for the vertical connection between the track plate.Levels at the vertical, horizontal reinforcing bar disposes one deck reinforced mesh respectively, because non-fragment orbit adopts resonant mode track circuit transmission characteristic technology, all reinforcing bar crosspoints are all done insulation and handled, and its resistance value is not less than 1010 ohm.The track plate adopts integral tension and puts Zhang Fangfa, and designing total stretching force is 4,367 thousand Ns, and actual stretching force deviation is not more than 5%.Therefore, not only need reliable, stable stretching force between fragment-free track slab, and have the good insulation performance performance.

The utility model content

The technical problems to be solved in the utility model provides a kind of fragment-free track slab and vertically connects the stretch-draw lock, and it can not only realize the adjusting of stretching force between the track plate easily, and has the good insulation performance performance.

In order to solve the problems of the technologies described above, fragment-free track slab of the present utility model vertically connects the stretch-draw lock, comprises the stretch-draw lock body, and described stretch-draw lock body is the shaped as frame structure, and the dual-side of the stretch-draw lock body of this shaped as frame structure is the stretch-draw muscle, and its two ends are the stretch-draw seat; On the stretch-draw seat, be provided with the stretch-draw groove of open slot shape; Be provided with insulation spacer in the stretch-draw groove.After adopting said structure, be provided with the stretch-draw groove owing to be the two ends stretch-draw seat of the stretch-draw lock body of shaped as frame structure, and this stretch-draw groove is an open slot, during use with vertical configuration finish rolling deformed bar of adjacent two track plate correspondences, place this stretch-draw groove by insulation spacer, and tensioning nut is tightened against the end of finish rolling deformed bar, turn corresponding two tensioning nuts respectively, the total tension force between the buffer rail guidance tape accurately not only, and the relative position between correcting track easily, have and regulate accurately, tension stability, convenience operation, again owing in the stretch-draw groove of stretch-draw lock body, be provided with special-shaped insulation spacer, thereby guaranteed the reliable insulation between each reinforcing bar tie point effectively, had the good insulation performance effect, satisfied the instructions for use of high-speed electric railway.

A kind of preferred implementation of the present utility model, the stretch-draw muscle and the stretch-draw seat of described stretch-draw lock body are cast an overall structure.Adopt integrally-built stretch-draw lock body, have simple for production, the advantage that bearing capacity is stronger.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model fragment-free track slab vertically being connected the stretch-draw lock is described in further detail.

Fig. 1 is that the utility model fragment-free track slab vertically connects the three-dimensional structure diagram that a kind of specific embodiment is locked in stretch-draw;

Fig. 2 is the vertical assembling relationship figure that draws reinforcing bar, insulation spacer and tensioning nut in the structure shown in Figure 1;

Fig. 3 is the three-dimensional structure diagram of insulation spacer in the structure shown in Figure 1;

Fig. 4 is the three-dimensional structure diagram of stretch-draw lock body in the structure shown in Figure 1.

Among the figure, 1-stretch-draw lock body; The vertical reinforcing bar that draws of 2-; The 3-tensioning nut; 4-stretch-draw pad; The 5-insulation spacer; 6-stretch-draw groove; 7-stretch-draw seat; 8-stretch-draw muscle.

The specific embodiment

Vertically connect in the stretch-draw lock at fragment-free track slab shown in Figure 1, stretch-draw lock body 1 rectangular closed-in construction, in the stretch-draw groove 6 at stretch-draw lock body 1 two ends, be equipped with the finish rolling deformed bar that vertically stretches out from the track plate by insulation spacer 5 respectively, its end is screwed with tensioning nut 3, turn tensioning nut 3 on the stretch-draw lock body 1 and can regulate stretching force between adjacent two blocks of track plates exactly, regulate 6 finish rolling deformed bars of this two adjacent track successively, both can regulate and control its total stretching force exactly, can adjust the relative position between the adjacent orbit plate again, thereby guarantee the laying precision of track plate.

Fig. 2 shows the vertical annex that turns that draws on the reinforcing bar, draws the end of reinforcing bar 2 to be disposed with tensioning nut 3, stretch-draw pad 4 and insulation spacer 5 inwards from vertical.Show that as Fig. 3 insulation spacer 5 is abnormally-structured pad, it is made by insulation materials, is provided with to hold the vertical open slot that draws reinforcing bar 2 on this insulation spacer 5, and insulation spacer 5 is put in the stretch-draw groove 6 of stretch-draw lock body 1, and its shape and stretch-draw groove 6 match.Inner face position at insulation spacer 5 then is provided with the nut shim step trough, and stretch-draw pad 4 places this step trough during use, makes the stretch-draw pad 4 of longitudinal reinforcement and tensioning nut 3 be in state of insulation with stretch-draw lock body 1.

Fig. 4 shows the concrete structure of stretch-draw lock body 1, and stretch-draw lock body 1 dual-side of rectangular mount structure is a stretch-draw muscle 8, and two ends then are stretch-draw seat 7, and stretch-draw muscle 8 on it and stretch-draw seat 7 adopt single-casting.On stretch-draw seat 7, be provided with the stretch-draw groove 6 that is the open slot shape, accommodate abnormally-structured insulation spacer 5 in the stretch-draw groove 6.

Claims

1. a fragment-free track slab vertically connects the stretch-draw lock, comprises stretch-draw lock body (1), and it is characterized in that: described stretch-draw lock body (1) is the shaped as frame structure, and the dual-side of the stretch-draw lock body (1) of this shaped as frame structure is stretch-draw muscle (8), and its two ends are stretch-draw seat (7); On stretch-draw seat (7), be provided with the stretch-draw groove (6) of open slot shape; Be provided with insulation spacer (5) in the stretch-draw groove (6).

2. fragment-free track slab according to claim 1 vertically connects the stretch-draw lock, it is characterized in that: the described insulation spacer of being made by insulation materials (5) is provided with the open slot that coincide with stretch-draw groove (6) shape, and its inner face then is provided with the nut shim step trough.

3. fragment-free track slab according to claim 1 and 2 vertically connects the stretch-draw lock, and it is characterized in that: the stretch-draw muscle (8) and the stretch-draw seat (7) of described stretch-draw lock body (1) are cast an overall structure.