Ballastless track roadbed slab expansion joint foam board fixing clamp
The foam board fixing clamp system addresses misalignment issues in CRTS I-type ballastless tracks by using angle steel and rail clips to securely fasten foam boards, enhancing construction efficiency and joint straightness.
Patent Information
- Application Number
- CN202422051969.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-23
AI Technical Summary
In the construction of ballastless track bed boards, the polyethylene foam board is prone to deform during concrete pouring, resulting in unstable expansion joints, affecting the aesthetics of the construction and low efficiency.
The polyethylene foam board is fixed with components such as foam board fixtures, rail clips and tool rail clips, and the rail fastening bolts and tool rail fixing bolts are used to fix it firmly on the track structure.
The smoothness of the polyethylene foam board is improved, ensuring the straightness of the expansion joints, simplifying operation, improving construction efficiency and saving manpower.
Smart Images
Figure CN223103384U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of construction supporting tools for ballastless track bed plates, and particularly relates to a fixing jig for polyethylene foam boards at expansion joints of ballastless track bed plates. Background Technique
[0002] The CRTS I type double-block ballastless track and the ballastless turnout bed plate both adopt unit concrete structures. Usually, after the rails and sleepers are installed, the bed plate is installed. The method is to first determine the expansion joints for adjusting the position of the bed plate, set 20-mm-wide expansion joints between adjacent bed plates, then fill polyethylene foam boards in the expansion joints, and finally pour the concrete of the bed plate.
[0003] During the construction process, ensuring the straightness of the expansion joints is the key control point of the whole process. Therefore, it is necessary to ensure that the polyethylene foam boards are firmly fixed. At present, the commonly used method is to use measure steel bars to fix the polyethylene foam boards at the upper and lower parts of the expansion joints. However, due to the easy deformation of long steel bars, the polyethylene foam boards will be skewed up and down during the concrete pouring process, resulting in the problem of not being in the same plane. As a result, the expansion joints are not straight and beautiful, and the subsequent treatment is time-consuming, laborious and has low work efficiency. Summary of the Invention
[0004] In order to solve the above problems, the purpose of the utility model is to provide a fixing jig for polyethylene foam boards at expansion joints of ballastless track bed plates.
[0005] In order to achieve the above purpose, the fixing jig for polyethylene foam boards at expansion joints of ballastless track bed plates provided by the utility model includes a foam board jig, rail clips, rail fastening bolts, tool rail clips and tool rail fixing bolts. Among them, the foam board jig is made of angle steel. Two foam board jigs are arranged in parallel and symmetrically between the sleepers, and the two vertical surfaces on the two foam board jigs are clamped on the upper ends of both sides of the polyethylene foam board. Eight rail clips are respectively fixed on the bottom edges of both sides of the two rails and the top surfaces of the corresponding foam board jigs by using rail fastening bolts at the same time. At the intersection of the top surface and the vertical surface in the middle part of each foam board jig, two tool rail clips vertically arranged along the length direction of the foam board jig are installed at intervals, and are respectively fixed on the bottom of the tool rail by using tool rail fixing bolts.
[0006] The foam board jig is made of galvanized angle steel, with a length of 2.8 m, a width of 5 cm, a height of 5 cm and a thickness of 2 mm.
[0007] The rail clips and the tool rail clips are both made of steel plates.
[0008] The fixing fixture for the expansion joint foam board of the ballastless track bed slab provided by the utility model has the following beneficial effects: it is convenient to use, recyclable, and highly reliable, and can play a very good auxiliary role during the construction of the ballastless track. It can play a certain auxiliary role in the smoothness of the polyethylene foam board at the expansion joint of the track bed slab and the smoothness of the end of the track bed slab. The operation is flexible and simple, which can improve work efficiency and save manpower. Brief Description of the Drawings
[0009] Figure 1 It is a schematic diagram of the fixing fixture for the expansion joint foam board of the ballastless track bed slab provided by the utility model. Detailed Description of the Preferred Embodiment
[0010] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0011] As Figure 1 shown, the fixing fixture for the expansion joint foam board of the ballastless track bed slab provided by the utility model includes a foam board clamp 1, a rail clip 2, a rail fastening bolt 3, a tool rail clip 4, and a tool rail fixing bolt 5. Among them, the foam board clamp 1 is made of angle steel. Two foam board clamps 1 are arranged in parallel and symmetrically between the sleepers, and the two vertical surfaces on the two foam board clamps 1 are clamped on the upper sides of both ends of the polyethylene foam board. Eight rail clips 2 are respectively fixed on the bottom edges of both sides of the two rails and the top surfaces of the corresponding foam board clamps 1 by means of the rail fastening bolts 3 at the same time. Two tool rail clips 4 vertically arranged along the length direction of the foam board clamp 1 are installed at intervals at the intersection of the top surface and the vertical surface in the middle of each foam board clamp 1, and are respectively fixed on the bottom of the tool rail by means of the tool rail fixing bolts 5.
[0012] The foam board clamp 1 is made of galvanized angle steel, with a length of 2.8 m, a width of 5 cm, a height of 5 cm, and a thickness of 2 mm.
[0013] The rail clip 2 and the tool rail clip 4 are both made of steel plates.
[0014] The usage method of the fixing fixture for the expansion joint foam board of the ballastless track bed slab provided by the present utility model will be described as follows:
[0015] When it is necessary to fix the polyethylene foam board with the expansion joint foam board fixing fixture of the ballastless track bed slab, first, the construction personnel clamp the two vertical surfaces on the two foam board fixtures 1 on the upper sides of the two sides of the polyethylene foam board to make the polyethylene foam board smooth, so that it is not easy to deform during the concrete pouring process, thus reducing subsequent costs. Then, 8 rail clamping pieces 2 are respectively fixed on the bottom edges of both sides of the two rails and the top surfaces of the corresponding foam board fixtures 1 by using rail fastening bolts 3 at the same time. After that, the two tool rail clamping pieces 4 on each foam board fixture 1 are respectively fixed at the corresponding parts of the bottom of the tool rail by using tool rail fixing bolts 5, thereby firmly fixing the polyethylene foam board. At this time, the concrete pouring construction of the track bed slab can be carried out.
Claims
1. A fixing fixture for the expansion joint foam board of a ballastless track bed slab, characterized in that: The fixing fixture for the expansion joint foam board of the ballastless track bed slab includes a foam board fixture (1), rail clamping pieces (2), rail fastening bolts (3), tool rail clamping pieces (4) and tool rail fixing bolts (5); among them, the foam board fixture (1) is made of angle steel, and two foam board fixtures (1) are arranged in parallel and symmetrically between the sleepers, and the two vertical surfaces on the two foam board fixtures (1) are clamped on the upper sides of both ends of the polyethylene foam board; 8 rail clamping pieces (2) are respectively fixed on the bottom edges of both sides of the two rails and the top surfaces of the corresponding foam board fixtures (1) by using the rail fastening bolts (3) at the same time; two tool rail clamping pieces (4) perpendicular to the length direction of the foam board fixture (1) are installed at intervals at the intersection of the top surface and the vertical surface in the middle part of each foam board fixture (1), and are respectively fixed on the bottom of the tool rail by using the tool rail fixing bolts (5).
2. The fixing fixture for the foam board of the expansion joint of the ballastless track bed slab according to claim 1, characterized in that: The foam board fixture (1) is made of galvanized angle steel, with a length of 2.8 m, a width of 5 cm, a height of 5 cm, and a thickness of 2 mm.
3. The fixing fixture for the foamed board of the expansion joint of the ballastless track bed slab according to claim 1, characterized in that: The rail clamping pieces (2) and the tool rail clamping pieces (4) are both made of steel plates.