Vibrating positioning structure for cast-in-place construction of track beam

Abstract

The utility model discloses a track beam cast-in-place construction vibration positioning structure which comprises a flat plate connected with a vibration device, a plurality of strip-shaped through grooves are formed in the flat plate, a plurality of vibration pipes are arranged in the strip-shaped through grooves in a sliding mode, and the bottoms of the vibration pipes are closed. The utility model provides a vibration positioning structure for cast-in-place construction of a track beam, which aims to solve the problem of high vibration difficulty in cast-in-place construction of a bottom plate of an ultra-high-speed magnetic levitation track beam in the prior art and realize the purposes of putting vibration equipment in place and reducing the vibration difficulty.

Description

Technical Field

[0001] This utility model relates to the field of magnetic levitation track technology, specifically to a vibration positioning structure for cast-in-place construction of track beams. Background Technology

[0002] The track beam is a crucial component of the maglev track, consisting of a beam or slab structure that functions as a track surface, bearing the train load and transferring it to the supporting structure. In other words, the maglev track beam performs the functions of both the beam and the track in a traditional railway. Compared to conventional rail train operation, maglev trains require significantly higher precision from the track beam.

[0003] In the field of high-speed maglev, the applicant has pioneered a novel maglev track beam structure, having previously filed a series of patents, including "Track Beam Structure and Forming Method for Ultra-High-Speed ​​Maglev Track Test Sections." Based on these prior applications, the applicant optimized the track beam structure, creating a semi-assembled structure with a cast-in-place base plate and prefabricated components, which was filed on the same day as this application. However, during the production of the base plate for this semi-assembled structure, the applicant discovered that the dense arrangement of reinforcing bars within the base plate made it difficult to perform vibration compaction after concrete pouring. Traditional vibrators were difficult to insert into the gaps between the dense reinforcing bars, and existing vibration tools used for densifying reinforcing bars were difficult to position and install under cast-in-place conditions. Utility Model Content

[0004] This utility model provides a vibration positioning structure for cast-in-place construction of track beams, in order to solve the problem of high vibration difficulty in the cast-in-place construction of the bottom plate of ultra-high speed maglev track beams in the prior art, and to achieve the purpose of positioning the vibration equipment and reducing the vibration difficulty.

[0005] This utility model is achieved through the following technical solution:

[0006] A vibration positioning structure for cast-in-place construction of track beams includes a flat plate connected to a vibration device, a plurality of strip-shaped through grooves are formed on the flat plate, and a plurality of vibration pipes are slidably arranged in the strip-shaped through grooves, with the bottom of the vibration pipes being closed.

[0007] To address the challenge of vibration compaction during the cast-in-place construction of the base slab of ultra-high-speed maglev track beams in existing technologies, this invention proposes a vibration positioning structure for cast-in-place track beam construction. In this structure, the flat plate is directly or indirectly connected to the vibration device; therefore, when the vibration device is working, it can drive the flat plate to vibrate, thereby driving the vibration pipe on the flat plate to vibrate.

[0008] Several strip-shaped slots are formed on the flat plate, and at least one vibrating pipe slides through each slot, extending downwards through the slot. Unlike conventional vibrators that generate their own vibration, the vibrating pipe in this application passively receives the vibration waves transmitted from the flat plate and vibrates accordingly. Therefore, there is no need for internal vibration-generating devices, allowing for a smaller size—specifically, a vibrating pipe with an outer diameter smaller than the spacing of the reinforcing bars in the bottom slab of the track beam—ensuring that the vibrating pipe can be inserted within the spacing of the reinforcing bars. The bottom end of the vibrating pipe is sealed to prevent concrete from entering and solidifying inside.

[0009] When using this method, the flat plate is placed above the cast-in-place area of ​​the bottom plate of the track beam. The vibratory pipe is slid to a position where it can be inserted into the steel mesh. After inserting the vibratory pipe downwards, the vibration device is started to complete the required vibration operation.

[0010] Furthermore, the top of the vibrating tube is open, and a polyhedron is placed inside the vibrating tube.

[0011] To improve the vibration effect of this application, at least one polyhedron is placed inside the vibrating pipe. When the vibrating pipe vibrates, it causes the polyhedron inside to vibrate as well. The polyhedron continuously impacts the inner wall of the vibrating pipe, thereby generating secondary vibration, which has a vibration effect on the concrete around each vibrating pipe.

[0012] In this scheme, a polyhedron refers to a three-dimensional structure enclosed by four or more polygons. Using a polyhedron structure can increase the probability of collision with the wall of the vibrating pipe.

[0013] Furthermore, the vibratory pipe is detachably connected to the sliding assembly, which slides within the strip-shaped groove. This design utilizes the sliding assembly to allow the vibratory pipe to slide along the strip-shaped groove; and the detachable connection between the vibratory pipe and the sliding assembly not only allows for flexible replacement or maintenance of the vibratory pipe, but also allows the vibratory pipe to be inserted only after the sliding assembly has slid to the appropriate position, preventing the vibratory pipe from being unable to slide flexibly due to the presence of the underlying reinforcing steel.

[0014] Furthermore, the sliding assembly includes a sliding part that slides with the strip groove, an anti-fall part that is fixedly connected to the sliding part and located at the top of the sliding part, an internal thread blind hole opened on the bottom surface of the sliding part, a connecting part that matches the internal thread blind hole, and a limiting part that is fixedly connected to the connecting part and located at the bottom end of the connecting part.

[0015] The outer diameters of the fall arrestor and the limiting part are both greater than the width of the strip groove.

[0016] The outer wall of the connecting part is provided with an external thread that matches the internal thread blind hole.

[0017] The inner diameter of the connecting part is equal to the outer diameter of the vibrating pipe.

[0018] In this design, the sliding part is located within the strip-shaped groove and can slide along it. A fall-prevention part is located at the top of the sliding part; this fall-prevention part cannot pass through the strip-shaped groove, thus ensuring that the sliding part will not fall.

[0019] A blind hole with internal threads is opened on the bottom surface of the sliding part, and the connecting part is screwed into it from bottom to top; the inside of the connecting part is a hollow structure to facilitate the passage of the vibrating pipe. A limiting part is set at the bottom of the connecting part. When the connecting part is screwed into the blind hole with internal threads, the limiting part is judged to be installed in place when it abuts against the bottom surface of the plate; after the connecting part is fully tightened, the frictional resistance between the limiting part and the plate can temporarily position the sliding assembly as a whole, preventing the sliding assembly from easily displacing the vibrating pipe during the vibration operation.

[0020] The sliding component in this solution has a clever structure that is easy to install and disassemble. While ensuring flexible sliding, it also has the functions of temporary positioning and upper and lower limit.

[0021] Furthermore, the vibrating pipe has a threaded section, and a threaded sleeve is connected to the threaded section. The bottom of the threaded sleeve has a cavity that matches the fall protection part.

[0022] The threaded sleeve is connected to the threaded section of the vibratory pipe. Once the position of the threaded sleeve is determined, the length below the threaded sleeve can be obtained, and the length of the vibratory pipe inserted below can be calculated. This solution allows for flexible adjustment of the height of the threaded sleeve according to the specific vibration depth requirements before lowering the vibratory pipe. The cavity at the bottom of the threaded sleeve covers the outside of the anti-fall device, and the anti-fall device and the threaded sleeve together support the vibratory pipe, preventing it from falling.

[0023] Furthermore, the bottom surface of the limiting part is provided with several annularly distributed rebar sensing devices, and the surface of the fall prevention part is provided with a signal indicating device; it also includes a control module, the input end of the control module is signal connected to each rebar sensing device, and the output end of the control module is signal connected to the signal indicating device.

[0024] In practical use, each rebar sensing device detects whether it is directly aligned with a rebar. If none of the rebar sensing devices on the limiting part detects the presence of a rebar, it is determined that the sliding component is not directly aligned with the rebar, and the vibratory pipe can be inserted. This solution provides guidance to workers through signal indicators, facilitating the rapid insertion of a large number of vibratory pipes on-site.

[0025] Furthermore, the vibrating pipe is a steel pipe.

[0026] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0027] 1. This utility model provides a vibration positioning structure for cast-in-place construction of track beams, which solves the problem of difficulty in vibration during the cast-in-place construction of the bottom slab of ultra-high-speed maglev track beams in the prior art. It helps to improve the uniformity of vibration of the internal concrete, and achieves the purpose of reducing vibration difficulty and improving construction quality. It is especially suitable for cast-in-place construction of the bottom slab of ultra-high-speed maglev track beams.

[0028] 2. This utility model provides a vibration positioning structure for cast-in-place construction of track beams. It abandons the idea of ​​using vibrating rods in the existing technology and uses vibrating pipes to transmit vibration, ensuring that the pipes can be inserted into the gaps between the reinforcing bars. The vibrating pipes can generate secondary vibrations, which can vibrate the concrete around each vibrating pipe.

[0029] 3. This utility model provides a vibration positioning structure for cast-in-place construction of track beams. It is designed with a special sliding component, which has the advantages of ingenious structure and easy installation and disassembly. While ensuring flexible sliding, it also has functions such as temporary positioning and upper and lower limit. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the working state of a specific embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the flat plate in a specific embodiment of the present invention;

[0033] Figure 3 This is a cross-sectional view of the installation of the vibrating pipe in a specific embodiment of this utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the vibrating pipe in a specific embodiment of the present utility model;

[0035] Figure 5 This is a schematic diagram of the sliding component in a specific embodiment of the present invention.

[0036] The attached diagram shows the markings and corresponding component names:

[0037] 1-Bottom mold, 2-Side mold, 3-Vibration device, 4-Plate, 5-C-shaped part, 6-Strip through groove, 7-Vibration pipe, 701-Threaded section, 8-Polyhedron, 9-Sliding part, 10-Anti-falling part, 11-Internal thread blind hole, 12-Connecting part, 13-Limiting part, 14-Threaded sleeve cover, 15-Rebar sensing device, 16-Signal indicating device, 17-Extension plate. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model. In the description of this application, it should be understood that terms such as "front," "rear," "left," "right," "up," "down," "vertical," "horizontal," "high," "low," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0039] Example 1:

[0040] like Figures 1 to 3 The diagram illustrates a vibration positioning structure for cast-in-place construction of a track beam, comprising a flat plate 4 connected to a vibration device 3. Several strip-shaped grooves 6 are formed on the flat plate 4, and several vibration pipes 7 are slidably disposed within the strip-shaped grooves 6. The bottom of each vibration pipe 7 is closed. The top of each vibration pipe 7 is open, and a polyhedron 8 is placed inside the vibration pipe 7.

[0041] In this embodiment, it also includes a bottom mold 1 for the cast-in-place construction of the bottom plate of the track beam, side molds 2 located around the bottom mold 1, a vibration device 3 installed on the outer wall of the side mold 2, and a flat plate 4 erected between the two side molds 2.

[0042] Preferably, it further includes C-shaped members 5 fixed at opposite ends of the plate 4; the C-shaped members 5 at both ends are used to fasten to the top of the side molds 2 on opposite sides. Preferably, the C-shaped members 5 are also connected to the side molds by bolts.

[0043] In this embodiment, the vibration device 3 can be implemented using existing devices such as a vibration motor.

[0044] In this embodiment, the polyhedron can be a hexahedron or an octahedron, preferably a solid metal block, which can have greater inertia and is beneficial to increasing the vibration amplitude generated when colliding with the pipe wall.

[0045] Example 2:

[0046] A vibration positioning structure for cast-in-place construction of track beams, based on Example 1, such as... Figures 1 to 5As shown, the vibrating pipe 7 is detachably connected to the sliding assembly, which slides within the strip-shaped through groove 6. The sliding assembly includes a sliding part 9 that slides within the strip-shaped through groove 6, an anti-fall part 10 fixedly connected to the sliding part 9 and located at the top of the sliding part 9, an internally threaded blind hole 11 formed on the bottom surface of the sliding part 9, a connecting part 12 that matches the internally threaded blind hole 11, and a limiting part 13 fixedly connected to the connecting part 12 and located at the bottom end of the connecting part 12.

[0047] The outer diameters of the fall arrestor 10 and the limiting part 13 are both greater than the width of the strip groove 6;

[0048] The outer wall of the connecting part 12 is provided with an external thread that matches the internal thread blind hole 11;

[0049] The inner diameter of the connecting part 12 is equal to the outer diameter of the vibrating pipe 7.

[0050] In this embodiment, the sliding part 9 and the anti-fall part 10 are integrally formed, and the connecting part 12 and the limiting part 13 are integrally formed.

[0051] In this embodiment, the outer diameter of the vibrating pipe 7 can be smaller than the minimum mesh diameter of the reinforcing mesh; if the projection of the reinforcing mesh on the horizontal plane is a square mesh of 10cm×10cm, then the vibrating pipe 7 can be made of a hollow pipe with an outer diameter of 8cm or even 5cm.

[0052] In addition, the vibratory pipe 7 can be made of metal or plastic, and is preferably made of steel pipe.

[0053] In addition, the vibrating pipe 7 includes a threaded section 701 and a smooth section. The threaded section 701 is located in the upper region of the vibrating pipe 7. A threaded sleeve 14 is connected to the threaded section 701. The bottom of the threaded sleeve 14 has a cavity that matches the fall arrestor 10.

[0054] In a more preferred embodiment, the bottom surface of the limiting part 13 is provided with a plurality of annularly distributed rebar sensing devices 15, and the surface of the fall prevention part 10 is provided with a signal indicating device 16; it also includes a control module, the input end of the control module is signal connected to each rebar sensing device 15, and the output end of the control module is signal connected to the signal indicating device 16.

[0055] The rebar sensing device 15 can be implemented using a downward-sensing metal detector, a distance sensor, or the like; the signal indicating device 16 can be an indicator light; and the control module can be implemented using a microcontroller or a PLC.

[0056] In a more preferred embodiment, the axis of the strip groove 6 forms an acute angle with the long axis of the plate 4. This arrangement ensures that the opening direction of the strip groove 6 is neither parallel to nor perpendicular to the long axis of the plate, which facilitates the staggered arrangement of the strip groove 6 and the reinforcing bars below. This allows the vibrating pipe sliding along the strip groove 6 to more efficiently find a position below that does not interfere with the reinforcing bars and insert itself smoothly.

[0057] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Additionally, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

Claims

1. A vibration positioning structure for cast-in-place construction of track beams, characterized in that, It includes a plate (4) connected to the vibration device (3), a plurality of strip-shaped through grooves (6) are opened on the plate (4), a plurality of vibrating pipes (7) are slidably arranged in the strip-shaped through grooves (6), and the bottom of the vibrating pipes (7) is closed.

2. The vibration positioning structure for cast-in-place construction of track beams according to claim 1, characterized in that, The top of the vibrating tube (7) is open, and a polyhedron (8) is placed inside the vibrating tube (7).

3. The vibration positioning structure for cast-in-place construction of track beams according to claim 1, characterized in that, The vibrating pipe (7) is detachably connected to the sliding component, which slides within the strip groove (6).

4. The vibration positioning structure for cast-in-place construction of track beams according to claim 3, characterized in that, The sliding assembly includes a sliding part (9) that slides with the strip groove (6), a fall prevention part (10) that is fixedly connected to the sliding part (9) and located at the top of the sliding part (9), an internal thread blind hole (11) opened on the bottom surface of the sliding part (9), a connecting part (12) that matches the internal thread blind hole (11), and a limiting part (13) that is fixedly connected to the connecting part (12) and located at the bottom end of the connecting part (12).

5. The vibration positioning structure for cast-in-place construction of track beams according to claim 4, characterized in that, The outer diameters of the fall arrestor (10) and the limiting part (13) are both greater than the width of the strip groove (6).

6. The vibration positioning structure for cast-in-place construction of track beams according to claim 4, characterized in that, The outer wall of the connecting part (12) is provided with an external thread that matches the internal thread blind hole (11).

7. The vibration positioning structure for cast-in-place construction of track beams according to claim 4, characterized in that, The inner diameter of the connecting part (12) is equal to the outer diameter of the vibrating pipe (7).

8. The vibration positioning structure for cast-in-place construction of track beams according to claim 4, characterized in that, The vibrating pipe (7) has a threaded section (701), and a threaded sleeve (14) is connected to the threaded section (701). The bottom of the threaded sleeve (14) has a cavity that matches the fall arrestor (10).

9. The vibration positioning structure for cast-in-place construction of track beams according to claim 4, characterized in that, The bottom surface of the limiting part (13) is provided with several annularly distributed steel bar sensing devices (15), and the surface of the anti-fall part (10) is provided with a signal indicating device (16); it also includes a control module, the input end of the control module is connected to each steel bar sensing device (15) and the output end of the control module is connected to the signal indicating device (16).

10. A vibration positioning structure for cast-in-place construction of a track beam according to any one of claims 1 to 9, characterized in that, The vibrating pipe (7) is a steel pipe.

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