I-shaped roadbed slab overall lifting displacement prevention device
By using a Type I track slab lifting and anti-displacement device during the settlement of the ballastless track slab, the problem of track slab displacement during grouting was solved, thereby improving construction progress and safety.
Patent Information
- Application Number
- CN202423062564.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-12
AI Technical Summary
During the settlement of ballastless track slabs, the slabs are prone to harmful displacement due to excessive pressure during grouting, which can affect construction progress and safety.
The Type I track slab integral lifting and anti-displacement device is adopted, which includes a base, longitudinal support frame, transverse displacement top plate, longitudinal displacement top screw, transverse displacement top screw and anchor bolt. By fixing it to the surface of the invert arch filling layer inside the tunnel, a stable structural frame is formed to prevent the track slab from displacing during the grouting process.
It effectively controls the displacement of the track bed slab during the grouting process, improves construction progress, reduces construction risks, and is simple to operate and highly reliable.
Smart Images
Figure CN223723507U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of construction supporting tool technology of ballastless track bed plate settlement disease, especially relates to a type I bed plate whole lifting anti - displacement device. BACKGROUND
[0002] At present, the CRTSI type (referred to as type I) double block ballastless track bed plate and ballastless turnout bed plate in the tunnel all adopt unit concrete structure.When the bed plate of the existing line produces harmful settlement, in order to improve the construction progress and reduce the construction risk, according to the site disease condition, aiming at the double block ballastless track structure characteristics, the bed plate of abnormal position of track surface elevation usually adopts the technical scheme of "rope saw cutting dissociation, lead screw lifting", after lifting, the polymer cement mortar material is injected to restore the dissociation interface.But in the grouting process, since the bed plate is not fixed, once the grouting pressure is too large, harmful displacement of the bed plate will be caused again, at this time, rework is needed, which undoubtedly affects the construction progress. SUMMARY
[0003] In order to solve the above problems, the purpose of the utility model is to provide a type I bed plate whole lifting anti - displacement device.
[0004] In order to achieve the above purpose, the type I bed plate whole lifting anti - displacement device provided by the utility model is used in pairs and symmetrically arranged, each type I bed plate whole lifting anti - displacement device comprises a base, a longitudinal support frame, a transverse displacement top plate, a longitudinal displacement top wire, a transverse displacement top wire, an anchor bolt and a longitudinal support fixing bolt; the base is an L-shaped structure composed of a horizontal plate and a vertical plate, wherein the four corners of the horizontal plate are respectively fixed on the surface side of the tunnel inverted arch filling layer by an anchor bolt, and the vertical plates on the two type I bed plate whole lifting anti - displacement devices are located on the inner side and arranged face to face; the longitudinal support frame is a cantilever structure arranged horizontally along the tunnel, and the outer end is fixed on the upper part of the vertical plate by a longitudinal support fixing bolt, and the inner end is a cantilever end; the longitudinal displacement top wire is arranged vertically, and the upper part is threadedly connected to the cantilever end of the longitudinal support frame; the transverse displacement top wire is arranged horizontally along the tunnel, and the outer ends of the two transverse displacement top wires are respectively threadedly connected to the lower part of the vertical plate on both sides; the transverse displacement top plate comprises a fixed sleeve, a screw rod and a fixed plate, the outer end of the fixed sleeve is connected to the part between the two transverse displacement top wires on the vertical plate, and a threaded hole is formed at the shaft center; the screw rod is threadedly connected to the threaded hole in the fixed sleeve, the outer end is connected to the fixed plate arranged vertically, and the fixed plate is parallel to the vertical plate.
[0005] The base is made of 1cm thick steel plate welding, and triangular ribs are arranged between the horizontal plate and the vertical plate for reinforcement.
[0006] The longitudinal support frame is welded by 5mm-thick C-shaped steel.
[0007] The I-type ballast bed plate integral lifting anti-displacement device has the advantages of convenient use, recycling, high reliability and the like, can play a good auxiliary role in the integral lifting construction process of the ballastless track, can effectively control the displacement of the ballast bed plate during the lifting to the position of the bottom grouting process, is flexible and simple to operate, can improve the construction progress, and reduces the construction risk. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 The I-type ballast bed plate integral lifting anti-displacement device structure schematic view is provided. DETAILED DESCRIPTION
[0009] The I-type ballast bed plate integral lifting anti-displacement device provided by the utility model will be described in detail below in combination with the drawings and specific embodiments.
[0010] The track data of a certain railway ballastless track does not meet the specification requirements due to the settlement of the ballast bed plate. According to the field disease condition, the technical scheme of “rope saw cutting and dissociation, lead screw lifting” is adopted for the ballast bed plate at the abnormal position of the track surface according to the structure characteristics of the double-block ballastless track. After lifting, the dissociation interface is recovered by using the polymer cement mortar material. The I-type ballast bed plate integral lifting anti-displacement device provided by the utility model is adopted in the project, and the expected effect is achieved.
[0011] As shown in the drawings, Figure 1 The I-type ballast bed plate integral lifting anti-displacement device provided by the utility model is used in pairs and symmetrically arranged. Each I-type ballast bed plate integral lifting anti-displacement device comprises a base 1, a longitudinal support frame 2, a transverse displacement top plate 3, a longitudinal displacement top screw 4, a transverse displacement top screw 5, an anchor bolt 6 and a longitudinal support fixing bolt 7. The base 1 is an L-shaped structure composed of a horizontal plate and a vertical plate. Four corners of the horizontal plate are respectively fixed to one side of the surface of the tunnel inverted arch filling layer by using one anchor bolt 6. The vertical plates of the two I-type ballast bed plate integral lifting anti-displacement devices are located on the inner side and face each other. The longitudinal support frame 2 is a cantilever structure arranged horizontally along the tunnel. The outer end is fixed to the upper part of the vertical plate by using the longitudinal support fixing bolt 7, and the inner end is a cantilever end. The longitudinal displacement top screw 4 is arranged vertically and is screwed at the cantilever end of the longitudinal support frame 2. The transverse displacement top screw 5 is arranged horizontally along the tunnel. The outer ends of the two transverse displacement top screws 5 are respectively screwed at the lower sides of the vertical plate. The transverse displacement top plate 3 comprises a fixed sleeve, a screw rod and a fixed plate. The outer end of the fixed sleeve is connected to the part between the two transverse displacement top screws 5 of the vertical plate, and a threaded hole is formed at the shaft center. The screw rod is externally screwed in the threaded hole of the fixed sleeve, and the outer end is connected to the fixed plate arranged vertically, and the fixed plate is parallel to the vertical plate.
[0012] The base 1 is welded by 1cm thick steel plate, and triangular ribs for reinforcement are arranged between the horizontal plate and the vertical plate.
[0013] The longitudinal support frame 2 is welded by 5mm thick C-shaped steel.
[0014] The use method of the I-shaped bed plate integral lifting anti-displacement device will be described as follows.
[0015] When the I-shaped bed plate integral lifting anti-displacement device is needed to be used for construction, first, the bed plate at the abnormal position of the rail surface elevation is lifted by the construction personnel by using the lead screw, then the horizontal plate of the two I-shaped bed plate integral lifting anti-displacement devices upper bases 1 are fixed on the surface of the inverted arch filling layer on the two sides of the bed plate in the tunnel by 4 anchor bolts 6, every 3m is provided with a pair of I-shaped bed plate integral lifting anti-displacement devices, then the lateral displacement top plate 3 and the lateral displacement top screw 5 are tightened to fix the two side surfaces of the bed plate, the longitudinal displacement top screw 4 is tightened to fix the top surface of the bed plate, then the polymeric cement mortar material is injected to restore the dissociation interface, in the grouting process, even if the grouting pressure fluctuates or is too large, since the bed plate has been firmly fixed by the I-shaped bed plate integral lifting anti-displacement device, the harmful horizontal and longitudinal displacement of the bed plate will not occur.
Claims
1. A displacement-preventing device for integral lifting of a slab of a type I ballast bed, characterized in that: The pair of I-type track bed plate integral lifting displacement prevention devices are symmetrically arranged, each of which comprises a base (1), a longitudinal support frame (2), a transverse displacement top plate (3), a longitudinal displacement top wire (4), a transverse displacement top wire (5), an anchor bolt (6) and a longitudinal support fixing bolt (7); the base (1) is an L-shaped structure composed of a horizontal plate and a vertical plate, wherein the four corners of the horizontal plate are respectively fixed to the surface side of the tunnel inverted arch filling layer by an anchor bolt (6), and the vertical plates of the two I-type track bed plate integral lifting displacement prevention devices are located on the inner side and face each other; the longitudinal support frame (2) is a cantilever structure arranged horizontally along the tunnel, the outer end of which is fixed to the upper part of the vertical plate by a longitudinal support fixing bolt (7), and the inner end is a cantilever end; the longitudinal displacement top wire (4) is vertically arranged, and the upper part is threadedly connected to the cantilever end of the longitudinal support frame (2); the transverse displacement top wire (5) is arranged horizontally along the tunnel, and the outer ends of the two transverse displacement top wires (5) are respectively threadedly connected to the lower part of the vertical plate on both sides; the transverse displacement top plate (3) comprises a fixed sleeve, a screw rod and a fixed plate, the outer end of the fixed sleeve is connected to the vertical plate between the two transverse displacement top wires (5), and a threaded hole is formed at the axis; the outer part of the screw rod is threadedly connected to the threaded hole of the fixed sleeve, the outer end is connected to the vertically arranged fixed plate, and the fixed plate is parallel to the vertical plate.
2. The displacement-preventing device for integral lifting of Type I ballast bed plates according to claim 1, characterized in that: The base (1) is made of a 1cm-thick steel plate welded together, and triangular ribs are arranged between the horizontal plate and the vertical plate for reinforcement.
3. The displacement-preventing device for integral lifting of Type I ballast bed plates according to claim 1, characterized in that: The longitudinal support frame (2) is made of a 5mm-thick C-shaped steel welded together.