CN201901819U

CN201901819U - Variable stiffness elastic support for ballastless track

Info

Publication number: CN201901819U
Application number: CN2009202982818U
Authority: CN
Inventors: 王勇; 褚夫强; 曾飞; 陈灵鸽
Original assignee: Luoyang Sunrui Rubber and Plastic Technology Co Ltd
Current assignee: Luoyang Sunrui Rubber and Plastic Technology Co Ltd
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2011-07-20
Anticipated expiration: 2019-12-30

Abstract

The utility model relates to the track traffic field, and provides a variable stiffness elastic support for a ballastless track, which is a composite structure consisting of a middle elastic cushion plate (7), a panel (8) and a base plate (6), wherein the surface of the middle elastic cushion plate (7) is provided with a stud or a groove and the inner part thereof can be provided with a hole; the variation of the stiffness is produced through the change of a compressed area and a free deformation area when the ballastless track is pressed to deform; the panel (8) is in contact with a track structure of the ballastless track; the base plate (6) is a flat plate with an anchoring welding leg (5), and is integrally cast with a circular boss, a square concave-convex groove and a lateral stop dog and other concrete structures through the anchoring welding leg. The stiffness of the elastic support is in obvious nonlinear feature along with the increase of the deformation or the increase of the stress, which can effectively reduce vibration of the track structure, especially the transferring of the horizontal vibration to a limit concrete and bridge, and effectively limit side slipping and shifting of the track structure to guarantee the stability of the track structure and the safety of the line.

Description

A kind of non-fragment orbit is with becoming the rigidity elastic support

Technical field

The utility model relates to field of track traffic, relates generally to a kind of non-fragment orbit with becoming the rigidity elastic support, mainly uses the track structure buffering vibration isolation and spacing of non-fragment orbit.

Background technology

Non-fragment orbit has that long service life, maintenance cost are low, track geometry position shape can keep characteristics such as good, be widely used in the construction of China Express Railway and Line for Passenger Transportation, domestic non-fragment orbit commonly used has CRTS I, II, III template formula non-fragment orbit, Rheda 2000 type non-fragment orbits, rising sun Pu Linshi non-fragment orbit etc.In the bridge location, train run at high speed and brake, the effect meeting of rocking when starting, centrifugal action etc. and temperature loading applies laterally and longitudinal force track, make track produce the trend of transverse and longitudinal displacement, in order to prevent the skew of track, on track structure, adopt measures such as the round boss of concrete system, square tongue and groove, side direction block to carry out spacing usually to track, while is added elastic layer such as rubber flat plate, potting resin etc. between spacing concrete and track structure, form to avoid track directly to contact with spacing concrete to be rigidly connected.The advantage of rubber flat plate is that load hour, rigidity is lower, can effectively reduce the vibration of track structure and noise to spacing concrete and bridge transmission, and rigidity was still lower when shortcoming was that load is big, increase the movement tendency of track structure, had certain potential safety hazard; The advantage of potting resin is that rigidity is bigger, can effectively stop the skew of track structure, and shortcoming is the vibration isolation ability, anti-repeated stock ability and poor fatigue properties.No matter be that rubber flat plate or potting resin all are difficult to take into account simultaneously vibration isolation and spacing double requirements.

Summary of the invention

The purpose of this utility model provides a kind of non-fragment orbit with becoming the rigidity elastic support, be used to connect spacing concretes such as non-fragment orbit structure and above-mentioned round boss, square tongue and groove, side direction block, its rigidity is along with the increase of deformation quantity or the increase that meets with stresses change greatly, present tangible nonlinear characteristic: hour rigidity is lower in distortion, the vibration that can effectively reduce track structure especially oscillation crosswise to spacing concrete and bridge transmission; Rigidity sharply increases when distortion is big, can effectively limit the sideslip and the displacement of track structure, guarantees the stable and line security of track structure.

The utility model is achieved through the following technical solutions its invention task:

The related non-linear rigidity elastic support of the utility model is the complex structure that middle resilient sleeper-bearing, panel and bed plate constitute; The surface of middle resilient sleeper-bearing has nail post or groove, and nail post, the groove that described middle resilient sleeper-bearing is had is positioned on the face that combines with panel institute or is positioned on the face that combines with bed plate institute, also can be positioned on the face that combines with panel, bed plate institute; Also can have hole in the inside of middle resilient sleeper-bearing; When compressive deformation, produce the variation of rigidity by the variation of compression area and Free Transform area; Described panel is the flat board of plane structure, its material of panel is the composite construction of stainless steel, polytetrafluoroethylene (PTFE), the low frictional resistance material of nylon or above-mentioned material, the one side that panel contacts with track structure is the smooth surface of lower resistance, and promptly elastic support contacts with track structure by the smooth surface of panel lower resistance; Bed plate is the flat board that has the anchoring leg, and build by concrete structures such as anchoring leg and round boss, square tongue and groove, side direction blocks and to be one, thereby whole change rigidity elastic support is fixed on the above-mentioned concrete structure, and bed plate is contacted with the limit body of concrete structure.

Resilient sleeper-bearing its material is a rubber-like elastic material in the middle of described, hardness between Shao Er A50～85, by bonding adhesive with panel with bed plate is bonding is compound to.

The anchoring leg of described bed plate can be Y shape, T shape, π shape form of structure, and the material of bed plate and anchoring piece can be stainless steel, also can be the antiseptic common iron of process.

The related non-fragment orbit of the utility model uses change rigidity elastic support easy for installation, reliable, have bigger free area and less compression area in distortion than a hour middle resilient sleeper-bearing, bearing rigidity is lower, the vibration that can effectively reduce track structure especially oscillation crosswise to spacing concrete and bridge transmission; The resilient sleeper-bearing free area significantly reduces in the middle of when distortion is big, and compression area sharply increases, and bearing rigidity sharply increases, and can effectively limit the sideslip and the displacement of track structure, guarantees the stable and line security of track structure.

Description of drawings

The non-linear rigidity elastic support that Fig. 1 relates to for the utility model is applied to the installation of CRTS II type non-fragment orbit and uses schematic diagram.

The non-linear rigidity elastic support example schematic that Fig. 2 relates to for the utility model.

Wherein, 1 is basis, bridge bottom, and 2 is side direction block concrete, and 3 is non-linear rigidity elastic support involved in the present invention, and 4 is the track structure of CRTS II type non-fragment orbit; 5 are the anchoring leg, and 6 is bed plate, and 7 is middle resilient sleeper-bearing, and 8 is panel.

The specific embodiment

Accompanying drawing 1,2 nonrestrictive structural representation and the use schematic diagrames that disclose a kind of concrete embodiment involved in the present invention; protection domain of the present utility model is not limited to the described situation of embodiment, below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 1, when the related non-linear rigidity elastic support 3 of the utility model is applied to CRTS II type non-fragment orbit, build to one realizes installing and stationary positioned by anchoring piece 5 and side direction block concrete 2, thereby whole elastic support is fixed on the above-mentioned concrete structure; Bed plate 6 is bordered on block concrete 2, and panel 8 is bordered on track structure 4, and panel is the flat board of plane structure, contacts with the track structure of non-fragment orbit; Track structure 4 and side direction block concrete 2 are connected as one by non-linear rigidity elastic support 3.

As shown in Figure 2, the related non-linear rigidity elastic support of the utility model 3 is mainly by middle resilient sleeper-bearing 7, panel 8 with have the sandwich composite construction that the bed plate 6 of anchoring leg 5 constitutes.The shape of anchoring leg 5 can be the hardware of Y shape, T shape, π shape or other shape, and the material of bed plate 6 and anchoring leg 5 can be for stainless steel or through antiseptic other metal material; Panel 8 is a light face slabbed construction, material can be stainless steel, also can reduce the shear action that non-linear rigidity elastic support and track structure produce because of friction for the composite construction of low frictional resistance materials such as polytetrafluoroethylene (PTFE), nylon or above-mentioned material; Middle resilient sleeper-bearing 7 is that the rubber-like elastic material of Shao Er A50～Shao Er A85 is made by hardness, nail post, the groove that middle resilient sleeper-bearing is had is positioned on the face that combines with panel institute or is positioned on the face that combines with bed plate institute, also can be positioned on the face that combines with panel, bed plate institute; Also can have hole in the inside of middle resilient sleeper-bearing; When compressive deformation, produce the nonlinear change of rigidity by the variation of compression area and Free Transform area.

Above-mentioned non-linear rigidity elastic support see the following form with the contrast for example of conventional elastic layer mechanical property (product size all adopts 100mm * 100mm * 11mm):

As seen from the above table, hour (vibration isolation zone) rigidity is lower in distortion for the non-linear rigidity elastic support, the vibration that can effectively reduce track structure especially oscillation crosswise to round boss, square tongue and groove, spacing concrete and bridge transmission; (stop zone, safety zone) rigidity sharply increases when distortion is big, can effectively limit the sideslip and the displacement of track structure, guarantees the stable and line security of track structure.

Claims

1. a non-fragment orbit is characterized in that with becoming the rigidity elastic support: described elastic support is the complex structure that middle resilient sleeper-bearing (7), panel (8) and bed plate (6) constitute; The surface of middle resilient sleeper-bearing (7) has nail post or groove, nail post, the groove that resilient sleeper-bearing (7) is had in the middle of described is positioned on the face that combines with panel (8) institute or is positioned on the face that combines with bed plate (6) institute, also can be positioned on the face that combines with panel (8), bed plate (6) institute; Also can have hole in the inside of middle resilient sleeper-bearing; When compressive deformation, produce the variation of rigidity by the variation of compression area and Free Transform area; Described panel (8) is the flat board of plane structure, its material of panel (8) is the composite construction of stainless steel, polytetrafluoroethylene (PTFE), the low frictional resistance material of nylon or above-mentioned material, the one side that panel (8) contacts with track structure is the smooth surface of lower resistance, and promptly elastic support (3) contacts with track structure by the smooth surface of panel lower resistance; Bed plate (6) is for having the flat board of anchoring leg (5), and build by anchoring leg and round boss, square tongue and groove, side direction block concrete structure and to be one, thereby whole elastic support is fixed on the above-mentioned concrete structure, and bed plate (6) is contacted with the limit body of concrete structure.

2. use according to the described a kind of non-fragment orbit of claim 1 and become the rigidity elastic support, it is characterized in that: its material of resilient sleeper-bearing (7) is a rubber-like elastic material in the middle of described, hardness between Shao Er A50～85, by bonding adhesive with panel (8) and bonding being compound to of bed plate (6).

3. use according to the described a kind of non-fragment orbit of claim 1 and become the rigidity elastic support, it is characterized in that: the anchoring leg (5) of described bed plate (6) can be Y shape, T shape, π shape form of structure, the material of bed plate (6) and anchoring leg (5) can be stainless steel, also can be the antiseptic common iron of process.