Fixing device of Rayleigh wave detector

Abstract

The utility model provides a Rayleigh wave detector fixing device. The Rayleigh wave detector fixing device comprises a connecting rod, a shell and a supporting rod. The shell is arranged at the two ends of the connecting rod, the shell comprises a fixed shell and a movable shell, the detector is limited in an installation space defined by the fixed shell and the movable shell, and the movable shell can rotate around the periphery of the detector so that the detector can move out of the installation space in the direction perpendicular to the axis of the detector; the supporting rod is screwed in the middle of the connecting rod, a sucker is arranged at the lower end of the supporting rod, and a sleeve is screwed on the supporting rod and can cover an air hole, communicated with an inner cavity of the sucker, in the supporting rod. The detector is limited in the mounting space defined by the fixed shell and the movable shell, and the detector can be moved out of the mounting space after the movable shell rotates by a set angle, so that the convenience of disassembly and assembly of the detector is improved.

Description

Technical Field

[0001] The present application relates to the technical field of concrete detection, and in particular to a fixing device for a Rayleigh wave detector. Background Art

[0002] The Rayleigh wave method is a nondestructive testing method for concrete lining defects. When using Rayleigh wave geophones to collect signals, the spacing between adjacent geophones is often manually adjusted, resulting in large random errors in the geophone spacing indicator. Patent Publication No. CN219456532U discloses a Rayleigh wave acquisition device and its fixing mechanism, which uses a connecting rod of a certain length to maintain a fixed spacing between the two signal collectors. However, in this disclosure, the signal collector is retained within the housing by a snap-on assembly, making it difficult to remove the signal collector from the housing. To address this issue, the inventors have proposed a fixing device for a Rayleigh wave geophone. Utility Model Content

[0003] The present application provides a fixing device for a Rayleigh wave detector, which can facilitate the disassembly and assembly of the detector.

[0004] The technical solution of this application is as follows:

[0005] The present application provides a fixing device for a Rayleigh wave detector, which comprises: a connecting rod, a housing, and a supporting rod;

[0006] The housing is provided at both ends of the connecting rod and includes a fixed housing and a movable housing. The detector is confined within the installation space enclosed by the fixed housing and the movable housing. The movable housing can rotate around the outer circumference of the detector so that the detector can be moved out of the installation space in a direction perpendicular to its own axis.

[0007] The support rod is screwed into the middle of the connecting rod, a suction cup is provided at the lower end of the support rod, and a sleeve is screwed into the support rod. The sleeve can cover the air hole on the support rod which is connected with the inner cavity of the suction cup.

[0008] By adopting the technical solution of the present application, the detector is confined in the installation space enclosed by the fixed shell and the movable shell, and the detector can be removed from the installation space after the movable shell is rotated by a set angle, thereby improving the convenience of disassembly and assembly of the detector.

[0009] In some implementations, the housings are symmetrically arranged at both ends of the connecting rod.

[0010] In some implementations, the fixed housing and the movable housing maintain a coaxial arrangement.

[0011] In some implementations, the axis of the stationary housing is perpendicular to the connecting rod.

[0012] In some implementations, baffles are provided at the lower ends of the fixed shell and the movable shell.

[0013] In some implementations, an arc-shaped groove for accommodating the movable shell is provided on the connecting rod.

[0014] In some implementations, the arcuate slot is coaxially arranged with the stationary housing.

[0015] In some implementations, the movable shell is provided with an upper limit plate and a lower limit plate for clamping the connecting rod.

[0016] In some implementations, a positioning bolt is screwed onto the upper positioning plate.

[0017] In some implementations, the support rod is parallel to the axis of the stationary housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only used to explain the present application, rather than to limit the scope of the present application. In the accompanying drawings:

[0019] Figure 1 is a schematic diagram of a fixing device for a Rayleigh wave detector according to an embodiment of the present application;

[0020] Figure 2 is a cross-sectional view of a fixing device for a Rayleigh wave detector according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of the installation of the housing on the connecting rod according to an embodiment of the present application;

[0022] Reference numerals:

[0023] 10. Connecting rod; 11. Arc groove;

[0024] 20. Housing; 21. Fixed housing; 22. Movable housing; 23. Baffle; 24. Upper limit plate; 25. Lower limit plate; 26. Positioning bolt; 27. Installation space;

[0025] 30. Support rod; 31. Suction cup; 32. Air hole; 33. Sleeve;

[0026] 40. Detector. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of this application clearer, the application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0028] In related technology, the Rayleigh wave method is a nondestructive testing method for concrete lining defects. When using Rayleigh wave detectors to collect signals, the spacing between adjacent detectors is often manually adjusted, resulting in large random errors in the detector spacing indicator. Patent Publication No. CN219456532U discloses a Rayleigh wave acquisition device and its fixing mechanism, which uses a connecting rod of a certain length to maintain a fixed spacing between the two signal collectors. However, in this disclosure, the signal collector is retained within the housing by a snap-on assembly, making it difficult to remove from the housing.

[0029] This embodiment provides a fixing device for a Rayleigh wave detector, which can facilitate the assembly and disassembly of the detector.

[0030] See also Figure 1-Figure 3 In this embodiment, a fixing device for a Rayleigh wave detector includes a connecting rod 10, a housing 20, and a support rod 30; wherein the housing 20 is provided at both ends of the connecting rod 10, and the housing 20 includes a fixed shell 21 and a movable shell 22. The detector 40 is confined within an installation space 27 enclosed by the fixed shell 21 and the movable shell 22, and the movable shell 22 can rotate around the outer circumference of the detector 40 so that the detector 40 can be moved out of the installation space 27 in a direction perpendicular to its own axis; the support rod 30 is screwed into the middle portion of the connecting rod 10, and a suction cup 31 is provided at the lower end of the support rod 30. A sleeve 33 is screwed onto the support rod 30, and the sleeve 33 can cover an air hole 32 on the support rod 30 that is connected to the inner cavity of the suction cup 31.

[0031] By adopting the technical solution of this embodiment, the detector 40 is confined in the installation space enclosed by the fixed shell 21 and the movable shell 22, and the detector 40 can be removed from the installation space after the movable shell 22 is rotated by a set angle, thereby improving the convenience of disassembly and assembly of the detector 40.

[0032] It should be noted that the length of the connecting rod 10 is fixed, and the positions of the axes of the two shells 20 on the connecting rod 10 are fixed, so the axial distance between the two shells 20 is fixed. The detector 40 is installed inside the shell 20 and maintains a coaxial arrangement with the shell 20. Therefore, the distance between the two detectors 40 is fixed. When changing the detection position, there is no need to manually adjust and determine the distance between the two detectors 40, and the operation is simpler.

[0033] In addition, the two shells 20 are symmetrically arranged at both ends of the connecting rod 10, and the axis of the shell 20 is perpendicular to the connecting rod 10. The shell 20 includes a fixed shell 21 and a movable shell 22. The shell 20, the fixed shell 21 and the movable shell 22 are coaxially arranged. The fixed shell 21 and the movable shell 22 are constructed as coaxially arranged arc-shaped plates, and the lower ends of the two are provided with an arc-shaped baffle 23. The baffle 23 extends to the axial side of the shell 20 and remains coaxial with the axis of the shell 20. The baffle 23 is used to stop the detector 40 inside the shell 20 to prevent the detector 40 from moving along the axial direction of the shell 20.

[0034] It should be noted that the outer diameter of the upper body of the detector 40 is larger than the outer diameter of the lower body. A collection end is provided at the lower end of the lower body, and the baffle 23 is clamped at the junction of the upper body and the lower body, thereby restricting the detector 40 as a whole inside the shell 20.

[0035] In addition, the upper end of the fixed shell 21 is fixedly connected to the connecting rod 10, and the upper end of the movable shell 22 is movably connected to the connecting rod 10. An arc groove 11 is provided on the connecting rod 10, and the arc groove 11 is coaxially arranged with the fixed shell 21. The movable shell 22 is provided with an upper limit plate 24 and a lower limit plate 26 for clamping the connecting rod 10, so that the movable shell 22 can move along the arc groove 11, that is, move around the outer periphery of the detector 40. A positioning bolt 26 is screwed on the upper limit plate 24, and the positioning bolt 26 passes through the upper limit plate 24 and can abut against the upper surface of the connecting rod 10. By tightening the positioning bolt 26, the position of the movable shell 22 can be fixed.

[0036] It should be noted that when the movable shell 22 approaches the fixed shell 21 along the arc groove 11, the opening sides of the two are enlarged, allowing the detector 40 to be moved out from the inside of the installation space 27 in a direction perpendicular to the axis of the shell 20, thereby improving the convenience of disassembly and assembly of the detector 40.

[0037] In this embodiment, the support rod 30 is screwed into the middle position of the connecting rod 10, the support rod 30 is parallel to the axis of the shell 20, the two shells 20 are symmetrically arranged on both sides of the support rod 30, the suction cup 31 is connected to the lower end of the support rod 30, and the side wall of the support rod 30 is provided with an air hole 32 that is connected to the inner cavity of the suction cup 31. At the same time, a sleeve 33 is also screwed into the support rod 30, and the axial length of the sleeve 33 can completely cover the air hole 32.

[0038] It should be noted that during installation, first rotate the sleeve 33 until it completely covers the air hole 32, then rotate the support rod 30 relative to the connecting rod 10, adjust the support rod 30 to a suitable support height to ensure that the collection end of the detector 40 is close to the concrete structure surface, and use the suction cup 31 to fix the entire device; after data collection, rotate the sleeve 33 until it is separated from the air hole 32. At this time, the inner cavity of the suction cup 31 is connected to the outside world, which facilitates the removal of the suction cup 31 from the concrete structure surface.

[0039] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A fixing device for a Rayleigh wave detector, characterized in that: include: link; a housing, the housing being provided at both ends of the connecting rod, the housing comprising a fixed housing and a movable housing, the detector being confined within an installation space enclosed by the fixed housing and the movable housing, the movable housing being capable of rotating around the outer circumference of the detector so that the detector can be moved out of the installation space in a direction perpendicular to its own axis; A support rod is screwed into the middle of the connecting rod, a suction cup is provided at the lower end of the support rod, a sleeve is screwed onto the support rod, and the sleeve can cover the air hole on the support rod that is connected to the inner cavity of the suction cup.

2. The fixing device for a Rayleigh wave detector according to claim 1, wherein: The housings are symmetrically arranged at both ends of the connecting rod.

3. The fixing device for a Rayleigh wave detector according to claim 2, wherein: The fixed housing and the movable housing are kept coaxially arranged.

4. The fixing device for a Rayleigh wave detector according to claim 3, wherein: The axis of the fixed housing is perpendicular to the connecting rod.

5. The fixing device for a Rayleigh wave detector according to claim 4, wherein: The lower ends of the fixed shell and the movable shell are both provided with baffles.

6. The fixing device for a Rayleigh wave detector according to claim 5, wherein: The connecting rod is provided with an arc groove for accommodating the movable shell.

7. The fixing device for a Rayleigh wave detector according to claim 6, wherein: The arc-shaped groove is coaxially arranged with the fixed shell.

8. The fixing device for a Rayleigh wave detector according to claim 7, wherein: An upper limit plate and a lower limit plate for clamping the connecting rod are provided on the movable shell.

9. The fixing device for a Rayleigh wave detector according to claim 8, wherein: A positioning bolt is screwed onto the upper limit plate.

10. The fixing device for a Rayleigh wave detector according to claim 9, wherein: The support rod is parallel to the axis of the fixing shell.

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