Multilayer steel bar welded mesh for ballastless track
By designing a multi-layer steel bar welded mesh for ballless tracks, the spacing adjustment and convenient disassembly and assembly are achieved using components such as intermediate blocks, mounting frames, connecting rods and contact plates, the problem of insufficient stability and strength of existing ballless track concrete is solved, and the applicability of the device and the service life of the concrete are improved.
Patent Information
- Application Number
- CN202421594443.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-08
AI Technical Summary
During concrete construction, the existing ballastless tracks are added with single-layer steel bar welded mesh in batches, resulting in relatively average concrete stability and strength, and the concrete strength will decrease after long-term use.
A multi-layer steel bar welded mesh for ballless tracks was designed. By setting up components such as intermediate blocks, upper mounting frames, lower mounting frames, connecting rods and contact plates, the spacing adjustment of the upper and lower layers of steel bar welded mesh is achieved, and the components are easily disassembled and assembled through the design of extrusion mechanisms and positioning blocks.
Through spacing adjustment and convenient disassembly and assembly design, the applicability of the device and the convenience of installation and use are improved, the stability and strength of concrete are enhanced, and the service life of concrete is extended.
Smart Images
Figure CN222879056U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel bar welded meshes, in particular to a multi-layer steel bar welded mesh for ballastless track. Background Art
[0002] Ballastless track refers to a track structure that uses an integral foundation such as concrete and asphalt mixture to replace the granular gravel roadbed, also known as ballastless track.
[0003] In the concrete construction of ballastless track, a flat steel welded mesh is laid first, and then concrete is poured to enhance the overall strength of the concrete. Currently, a single layer of steel welded mesh is added in several times during construction. The concrete is poured with steel welded mesh added in batches, and the multiple layers of steel welded mesh exist separately, resulting in relatively general stability and strength of the concrete. After a long period of sun exposure and wind blowing and use, the strength of the concrete will decrease. In order to address this problem, a multi-layer steel welded mesh for ballastless track is proposed. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a multi-layer steel bar welded mesh for ballastless track.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A multi-layer steel bar welded mesh for ballastless track comprises longitudinal steel bars, transverse steel bars and an intermediate block, an upper mounting frame is provided on the intermediate block, contact plates are provided on the longitudinal steel bars and the transverse steel bars, a lower mounting frame is provided on the contact plate, a connecting rod is provided between the upper mounting frame and the lower mounting frame, a first extrusion groove is provided on the connecting rod, a connecting block is provided in the first extrusion groove through a first extrusion mechanism, a connecting hole corresponding to the connecting block is provided on the upper mounting frame, a second extrusion groove is provided on the connecting rod, a positioning block is provided in the second extrusion groove through a second extrusion mechanism, and a positioning hole corresponding to the positioning block is provided on the lower mounting frame.
[0007] Preferably, the first extrusion mechanism comprises a first spring arranged in the first extrusion groove, and two ends of the first spring are elastically connected to the outer wall of the connecting block and the inner wall of the first extrusion groove respectively.
[0008] Preferably, the second extrusion mechanism comprises a second spring arranged in the second extrusion groove, and two ends of the second spring are elastically connected to the outer wall of the positioning block and the inner wall of the second extrusion groove respectively.
[0009] Preferably, the contact plate is designed to be arc-shaped, and anti-slip grooves are provided on the surface of the contact plate that contacts the longitudinal steel bars and the transverse steel bars.
[0010] Preferably, the vertical cross-sectional views of the first extrusion groove, the connecting block and the connecting hole are all circular, and the vertical cross-sectional views of the second extrusion groove, the positioning block and the positioning hole are all regular hexagons.
[0011] Preferably, the upper mounting frame and the lower mounting frame are both U-shaped, and the upper mounting frame and the lower mounting frame are respectively welded on the middle block and the contact plate.
[0012] Beneficial effects of the utility model:
[0013] 1. By setting up components such as the middle block, the upper mounting frame, the lower mounting frame, the connecting rod and the contact plate, and by changing the inclination angle of the connecting rod, the spacing between the upper and lower layers of the steel bar welded mesh can be adjusted to improve the applicability of the device.
[0014] 2. By setting the connecting block, the positioning block, the first spring and the second spring, convenient disassembly and assembly of components such as the intermediate block and the connecting rod are achieved, providing convenience for the installation and use of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic structural diagram of a multi-layer steel bar welded mesh for ballastless track proposed by the utility model;
[0016] Figure 2 It is a schematic diagram of the structure of components such as the middle block and the connecting rod;
[0017] Figure 3 It is a schematic diagram of the vertical section structure of the connecting rod.
[0018] In the figure: 1 longitudinal steel bar, 2 transverse steel bar, 3 middle block, 4 upper mounting frame, 5 connecting hole, 6 connecting rod, 7 contact plate, 8 anti-slip groove, 9 lower mounting frame, 10 positioning hole, 11 first extrusion groove, 12 connecting block, 13 first spring, 14 second extrusion groove, 15 positioning block, 16 second spring. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] Reference Figure 1-3A multi-layer steel bar welded mesh for ballastless track includes longitudinal steel bars 1, transverse steel bars 2 and an intermediate block 3, an upper mounting frame 4 is provided on the intermediate block 3, contact plates 7 are provided on the longitudinal steel bars 1 and the transverse steel bars 2, a lower mounting frame 9 is provided on the contact plate 7, a connecting rod 6 is provided between the upper mounting frame 4 and the lower mounting frame 9, a first extrusion groove 11 is provided on the connecting rod 6, a connecting block 12 is provided in the first extrusion groove 11 through a first extrusion mechanism, a connecting hole 5 corresponding to the connecting block 12 is provided on the upper mounting frame 4, a second extrusion groove 14 is provided on the connecting rod 6, a positioning block 15 is provided in the second extrusion groove 14 through a second extrusion mechanism, and a positioning hole 10 corresponding to the positioning block 15 is provided on the lower mounting frame 9.
[0021] The first extrusion mechanism includes a first spring 13 arranged in the first extrusion groove 11, and the two ends of the first spring 13 are elastically connected to the outer wall of the connecting block 12 and the inner wall of the first extrusion groove 11 respectively. With the help of the first spring 13, the connecting block 12 is ejected, and after it is pushed into the connecting hole 5, the connecting rod 6 is rotatably connected relative to the upper mounting frame 4.
[0022] The second extrusion mechanism includes a second spring 16 arranged in the second extrusion groove 14, and the two ends of the second spring 16 are elastically connected to the outer wall of the positioning block 15 and the inner wall of the second extrusion groove 14 respectively. The second spring 16 realizes the ejection of the positioning block 15, and after it is pushed into the positioning hole 10, the positioning connection of the connecting rod 6 relative to the lower mounting frame 9 is realized.
[0023] The contact plate 7 is designed to be arc-shaped, and anti-slip grooves 8 are provided on the surface where the contact plate 7 contacts the longitudinal steel bars 1 and the transverse steel bars 2. The anti-slip grooves 8 ensure the stability of the contact plate 7 on the longitudinal steel bars 1 and the transverse steel bars 2. As shown in the figure, the contact plate 7 is in the shape of a three-quarter ring.
[0024] The vertical cross-sectional views of the first extrusion groove 11, the connecting block 12 and the connecting hole 5 are all circular, the vertical cross-sectional views of the second extrusion groove 14, the positioning block 15 and the positioning hole 10 are all regular hexagons, and the connecting rod 6 has a rotation adjustment angle of 30 degrees relative to the lower mounting frame 9 each time.
[0025] The upper mounting frame 4 and the lower mounting frame 9 are both U-shaped, and are welded on the middle block 3 and the contact plate 7 respectively.
[0026] When the utility model is used, Figure 1As shown, the multi-layer steel welded mesh is composed of two layers of steel welded mesh, and the upper and lower layers of steel welded mesh are supported by components such as the middle block 3 and the connecting rod 6. Since the inclination angle of the connecting rod 6 is adjustable, the spacing between the upper and lower layers of steel welded mesh is adjustable. The spacing between the upper and lower layers of steel welded mesh can be determined according to factors such as the bearing capacity, stability, durability, etc. of the track, and in combination with relevant standards and specifications. Before the upper and lower layers of steel welded mesh are connected, the inclination angle of the connecting rod 6 needs to be adjusted. Specifically, the positioning block 15 in the positioning hole 10 is pressed to compress the second spring 16 and disengage from the positioning hole 10 and enter the second extrusion groove 14. Then the connecting rod 6 rotates under the support of the connecting block 12 and the upper mounting frame 4. The single rotation adjustment angle is 30 degrees. Adjust the positioning block 15 so that it re-enters the positioning hole 10.
[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A multi-layer steel bar welded mesh for ballastless track, comprising longitudinal steel bars (1), transverse steel bars (2) and an intermediate block (3), characterized in that: An upper mounting frame (4) is provided on the intermediate block (3), contact plates (7) are provided on the longitudinal steel bars (1) and the transverse steel bars (2), a lower mounting frame (9) is provided on the contact plate (7), a connecting rod (6) is provided between the upper mounting frame (4) and the lower mounting frame (9), a first extrusion groove (11) is provided on the connecting rod (6), a connecting block (12) is provided in the first extrusion groove (11) through a first extrusion mechanism, a connecting hole (5) corresponding to the connecting block (12) is provided on the upper mounting frame (4), a second extrusion groove (14) is provided in the second extrusion groove (14) through a second extrusion mechanism, and a positioning block (15) is provided on the lower mounting frame (9).
2. The multi-layer steel bar welded mesh for ballastless track according to claim 1, characterized in that: The first extrusion mechanism comprises a first spring (13) arranged in the first extrusion groove (11), and two ends of the first spring (13) are elastically connected to the outer wall of the connection block (12) and the inner wall of the first extrusion groove (11) respectively.
3. The multi-layer steel bar welded mesh for ballastless track according to claim 2, characterized in that: The second extrusion mechanism comprises a second spring (16) arranged in the second extrusion groove (14), and two ends of the second spring (16) are elastically connected to the outer wall of the positioning block (15) and the inner wall of the second extrusion groove (14) respectively.
4. The multi-layer steel bar welded mesh for ballastless track according to claim 3, characterized in that: The contact plate (7) is designed to be arc-shaped, and anti-slip grooves (8) are provided on the surface of the contact plate (7) that contacts the longitudinal steel bars (1) and the transverse steel bars (2).
5. The multi-layer steel bar welded mesh for ballastless track according to claim 4, characterized in that: The vertical cross-sectional views of the first extrusion groove (11), the connection block (12) and the connection hole (5) are all circular, and the vertical cross-sectional views of the second extrusion groove (14), the positioning block (15) and the positioning hole (10) are all regular hexagons.
6. The multi-layer steel bar welded mesh for ballastless track according to claim 5, characterized in that: The upper mounting frame (4) and the lower mounting frame (9) are both U-shaped in design, and the upper mounting frame (4) and the lower mounting frame (9) are respectively welded and arranged on the middle block (3) and the contact plate (7).