Engineering detection geological radar cable and antenna integrated protection device

Abstract

The invention discloses an engineering detection geological radar cable and antenna integrated protection device, and belongs to the technical field of geological radars, the engineering detection geological radar cable and antenna integrated protection device comprises an antenna protection box, an antenna body is placed in the antenna protection box through an antenna support, and the antenna support is made of a ceramic rubber composite plate. One end of the antenna extends out of the antenna protection box and then is connected with a cable through a PFC switching structure, and the bottom of the antenna protection box is provided with damping wheels. The antenna protection box is arranged to protect the antenna body, abrasion caused by direct contact between the antenna and a rough detection surface is avoided, meanwhile, the antenna support is made of a ceramic rubber composite plate, abrasion caused by contact between the antenna support and the antenna body can be greatly reduced, and damping wheels are arranged at the bottom of the antenna protection box; and the wear degree of the antenna is greatly reduced through active damping and composite board protection.

Description

Technical Field

[0001] The present invention relates to the technical field of geological radars, and in particular to an integrated protection device for geological radar cables and antennas for engineering detection. Background Art

[0002] Geological radar (GPR), a core piece of equipment in engineering inspection, is widely used in scenarios such as tunnel lining quality assessment, underground pipeline detection, and nondestructive testing of concrete structures. Its core component, the antenna, requires direct contact with the inspection surface (such as tunnel vaults and road pavement). Frequent movement in complex terrain can lead to the following problems: Direct contact with the rough inspection surface easily scratches the metal or plastic baseplate, causing severe antenna wear and tear. This often results in a service life of less than a year, necessitating frequent replacement and increasing operational costs. Summary of the Invention

[0003] In response to the current technical problems, the present invention provides an integrated protection device for engineering detection geological radar cables and antennas to solve the problems in the prior art.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: An integrated protection device for engineering detection geological radar cables and antennas includes an antenna protection box. The antenna body is placed in the antenna protection box through an antenna bracket. The antenna bracket is made of a ceramic rubber composite plate. One end of the antenna extends out of the antenna protection box and is connected to the cable through a PFC adapter structure. A shock-absorbing wheel is provided at the bottom of the antenna protection box.

[0005] Preferably, the PFC adapter structure includes a connecting frame provided on the antenna protective box, a silicone pad being movably provided in the connecting frame, a flexible circuit board being provided on the upper end of the silicone pad, the flexible circuit board being in an Ω-shaped structure, a filling portion being provided on the upper part of the silicone pad that matches the structure of the flexible circuit board, one end of the flexible circuit board being welded to the antenna, and the other end thereof being welded to the cable.

[0006] With this setting, the flexible circuit board adopts an "Ω" design, which makes it easier to control stress distribution. A silicone pad is installed at the bottom of the fold. The silicone pad has the characteristic of deformation. When the cable on the flexible circuit board is pulled, the circuit board is deformed. The deformation of the silicone pad can serve as the first protection.

[0007] Preferably, a slide groove is provided in the connecting frame, and a slider that slides with the slide groove is provided on the silicone pad.

[0008] With this arrangement, the bottom of the silicone pad has a contoured slider, which is installed in the slide groove at the bottom of the connecting frame. When the cable is pulled, the circuit board deforms and the silicone pad deforms. At the same time, due to the cooperation between the slide groove and the slider, it will move in the pulling direction, thus achieving secondary protection.

[0009] Preferably, a spherical groove is provided on the outer side of the connecting frame, and a magnetic joint is movably connected in the spherical groove; The magnetic connector includes a first magnetic head, which includes a first magnetic body and a spherical connector connected to one end of the first magnetic body. The spherical connector is movably arranged in the spherical groove. A first through hole is passed through the middle of the first magnetic body and the spherical connector. The cable is passed through the first through hole. A first hole portion is provided on the first magnetic body. A first spring is provided in the first hole portion. The first spring is fixed to the surface of the cable. The two ends of the first spring are respectively abutted against the two ends of the first hole portion. A first neodymium iron boron magnet array is evenly distributed in the first magnetic head.

[0010] With this arrangement, when the cable is stretched in different directions, the spherical connector moves within the spherical groove, allowing the magnetic connector to rotate with the cable to a certain angle, achieving a force-relieving effect and providing a third level of protection against cable tension. Simultaneously, the first spring is fixed to the cable surface, with both ends abutting the end surface of the first hole. When the cable is stretched, the first spring compresses, generating a reverse elastic force and providing a fourth level of protection. When the cable is free of tension, the first spring returns to its original position.

[0011] Preferably, the magnetic connector also includes a second magnetic head that can be adsorbed with the first magnetic head, the second magnetic head includes a second magnetic body, a second through hole is passed through the middle of the second magnetic body, the cable is passed through the second through hole, a second hole portion is provided on the second magnetic body, a second spring is provided in the second hole portion, the second spring is fixed to the surface of the cable, the two ends of the second spring are respectively abutted against the two ends of the second hole portion, and a second neodymium iron boron magnet array is evenly distributed in the second magnetic head.

[0012] Preferably, the first magnetic body is provided with a buckle, and the second magnetic body is provided with a slot matching the buckle.

[0013] With such arrangement, when the second magnetic head is attracted to the first magnetic head, the buckle is snapped into the slot to further lock and fix the first magnetic head and the second magnetic head.

[0014] Preferably, it also includes a telescopic sheath, which includes an inner tube detachably connected to the second magnetic body, the cable is movably passed through the inner tube, an outer tube is fixed on the cable, and the outer tube is movably sleeved on the inner tube, and a third spring is provided between the outer wall of the inner tube and the inner wall of the outer tube, one end of the third spring abuts against the inner tube, and the other end abuts against the outer tube.

[0015] With this arrangement, when the cable is pulled, it moves, which drives the outer tube to move axially, thereby extending the telescopic sheath to protect the cable. At the same time, the forward movement of the outer tube drives the third spring to stretch. When there is no force, the outer tube returns to its original position under the action of the third spring.

[0016] Preferably, a boss is provided at one end of the second magnetic body away from the first magnetic head, the second through hole passes through the boss, an external thread is provided on the outer periphery of the boss, and an internal thread is provided on the inner tube to be screwed to the external thread.

[0017] The inner tube is threadedly connected to the second magnetic head, and the connection method is simple, reliable and detachable.

[0018] Preferably, a clamping ring is provided on the cable, which includes an inner ring and an outer ring. The inner ring and the outer ring are concentrically arranged, and a gap is provided at the same radial position corresponding to the inner ring and the outer ring. The inner ring and the outer ring are connected by evenly distributed silicone columns, and a ball is rollingly connected to the position corresponding to each silicone column on the outer ring.

[0019] With this setting, the clamping ring is opened along the notch, and the cable is clipped into the inner ring to complete the cable fixation. The friction between the silicone inner ring and the cable is large and no axial displacement occurs. When the cable is dragged on the ground, the ball is always in contact with the ground. The connecting part between the inner ring and the outer ring is also a silicone column, which can undergo elastic deformation, and can provide buffering and shock absorption to a great extent, reducing wear caused by direct contact of the cable with the ground.

[0020] Preferably, a spherical notch is provided on the outer periphery of the outer ring, and the balls roll in the spherical notch.

[0021] Compared with the existing technology, the present invention has the following beneficial effects: the present invention protects the antenna body by providing an antenna protection box to prevent the antenna from directly contacting the rough detection surface and causing wear. At the same time, the antenna bracket is made of a ceramic rubber composite plate material, which can greatly reduce the wear caused by contact with the antenna body. Shock-absorbing wheels are provided at the bottom of the antenna protection box, and the degree of antenna wear is greatly reduced through active shock absorption + composite plate protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A longitudinal cross-sectional view of Figure 3 for Figure 2 A partial enlarged view of Figure 4 for Figure 1 A structural diagram of the FPC transfer structure; Figure 5 for Figure 1 A schematic structural diagram of the first magnetic head in FIG. Figure 6 for Figure 5 A longitudinal cross-sectional view of Figure 7 for Figure 1 A schematic structural diagram of the second magnetic head in FIG. Figure 8 for Figure 7 A longitudinal cross-sectional view of Figure 9 for Figure 1 An internal cross-sectional view of the telescopic sheath; Figure 10 for Figure 1 Schematic diagram of the structure of the clasp; Figure 11 for Figure 10 Longitudinal cross-sectional view.

[0023] Reference numerals: 1. Antenna protection box, 11. Cover, 12. Handle, 13. Connecting frame, 14. Ventilation hole, 15. Shock-absorbing wheel, 2. Antenna body, 21. Antenna bracket, 22. Antenna, 3. Flexible circuit board, 31. Silicone pad, 310. Filling part, 32. Slider, 34. Slide, 4. Spherical groove, 5. First magnetic head, 51. First magnetic body, 52. Spherical connector, 53. First through hole, 54. First hole, 55. First spring , 56. First NdFeB magnet array, 57. Buckle, 6. Second magnetic head, 61. Second magnetic body, 62. Second through hole, 63. Boss, 64. Second hole portion, 65. Second spring, 66. Second NdFeB magnet array, 67. Slot, 7. Telescopic sheath, 71. Inner tube, 72. Outer tube, 73. Third spring, 8. Snap ring, 81. Inner ring, 82. Outer ring, 83. Silicone column, 84. Ball, 85 Notch, 9. Cable. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, this should not be understood as limiting the scope of the present invention to the following embodiments, and all technologies implemented based on the present invention fall within the scope of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0026] As attached Figure 1 -Attached Figure 11 The illustrated device is an integrated protection device for geological radar cables and antennas for engineering inspections, comprising an antenna protection box 1. The upper end of the antenna protection box 1 is connected to a cover plate 11 via a hinge. A magnetic buckle is provided at the position where the front end of the cover plate 11 contacts the antenna protection box 1. When the cover plate 11 is closed, the magnetic buckle further tightens the cover plate 11 to improve its tightness. The side wall of the antenna protection box 1 is also provided with ventilation holes 14. The ventilation holes 14 are honeycomb-shaped to prevent heat accumulation. A waterproof and breathable membrane is installed on the surface of the ventilation holes 14 to prevent mud and sand from entering. The bottom of the antenna protection box 1 is provided with a shock-absorbing wheel 15. The shock-absorbing wheel 15 is made of carbon fiber composite material and is driven by a motor to achieve automatic walking and automatic steering functions. It is used to adapt to uneven ground and is suitable for a variety of detection environments to ensure the stability of the internal antenna during movement. A handle 12 is also provided at the front end of the cover plate 11.

[0027] The antenna body 2 is placed in the antenna protection box 1 through the antenna bracket 21. The antenna bracket 21 is made of a ceramic rubber composite plate. One end of the antenna 22 extends out of the antenna protection box 1 and is connected to the cable 9 through a PFC adapter structure.

[0028] refer to Figure 3 and Figure 4 The PFC adapter structure includes a connection frame 13 provided on the antenna protection box 1. A silicone pad 31 is movably provided within the connection frame 13. A flexible circuit board 3 is provided on the upper end of the silicone pad 31. The flexible circuit board 3 has an Ω-shaped structure. A filling portion 310 is provided on the upper portion of the silicone pad 31 to match the structure of the flexible circuit board 3. That is, the filling portion 310 is Ω-shaped and fills the folds of the flexible circuit board 3 and contacts the inner side of the flexible circuit board 3. One end of the flexible circuit board 3 is welded to the antenna 22, and the other end is welded to the cable 9. The output end of the antenna 22 extends into the connection frame 13 and is welded to the flexible circuit board 3. The input end of the cable 9 extends into the connection frame 13 and is welded to the flexible circuit board 3. Conductive silver glue is applied to the contact area between the flexible circuit board 3, the antenna 22, and the cable 9 to enhance the stability of the electrical connection. At the same time, a high-temperature resistant epoxy resin is used to encapsulate the welding area to prevent oxidation and mechanical damage.

[0029] A slide groove 34 is provided in the connecting frame 13, and a slider 32 is provided on the silicone pad 31 to slide with the slide groove 34. The slider 32 cooperates with the slide groove 34 to realize the movement of the silicone pad 31 in the connecting frame 13. Of course, the movement of the silicone pad 31 in the connecting frame 13 can also be realized by the cooperation of the slide rail and the slider.

[0030] refer to Figure 3 、 Figure 5 and Figure 6, a spherical groove 4 is provided on the outer side of the connecting frame 13, and a magnetic joint is movably connected in the spherical groove 4; the magnetic joint includes a first magnetic head 5, the first magnetic head 5 includes a first magnetic body 51 and a spherical connector 52 connected to one end of the first magnetic body 51, the first magnetic body 51 is a cylindrical structure as a whole, the spherical connector 52 is movably arranged in the spherical groove 4, the middle part of the first magnetic body 51 and the spherical connector 52 is penetrated by a first through hole 53, the cable 9 is passed through the first through hole 53, the first magnetic body 51 is provided with a first hole portion 54, the first hole portion 54 is concentrically arranged with the first through hole 53, a first spring 55 is provided in the first hole portion 54, the first spring 55 is fixed to the surface of the cable 9, the two ends of the first spring 55 respectively abut against the end faces of the two ends of the first hole portion 54, and a first neodymium iron boron magnet array 56 is evenly distributed along its circumference in the first magnetic head 5.

[0031] refer to Figure 7 and Figure 8 The magnetic connector also includes a second magnetic head 6 that can be attracted to the first magnetic head 5. The second magnetic head 6 includes a second magnetic body 61. The second magnetic body 61 has a columnar structure as a whole. A second through hole 62 is passed through the middle of the second magnetic body 61. The cable 9 is passed through the second through hole 62. A second hole portion 64 is provided on the second magnetic body 61. The second hole portion 64 is concentrically arranged with the second through hole 62. A second spring 65 is provided in the second hole portion 64. The second spring 65 is fixed to the surface of the cable 9. The two ends of the second spring 65 respectively abut against the end faces of the two ends of the second hole portion 64. A second neodymium iron boron magnet array 66 is evenly distributed along the circumference of the second magnetic head 6.

[0032] The first magnetic body 51 is equipped with a buckle 57, which is cantilevered at both ends. The second magnetic body 61 is equipped with a slot 67 that mates with the buckle 57. To connect, first press the end of the buckle 57 away from the second magnetic head 6. The end of the buckle 57 closer to the second magnetic head 6 will tilt up. After the second magnetic head 6 and the first magnetic head 5 are attracted, release the buckle 57. The end of the buckle 57 snaps into the slot 67, locking the first magnetic head 5 and the second magnetic head 6. A silicone waterproof ring is wrapped around the periphery of the interface, which forms an IP67 seal when compressed.

[0033] The design of the first and second magnetic heads 5, 6 enables blind insertion and positioning: the magnet array generates a gradient magnetic field, guiding the male and female connectors to automatically align within a ±2mm error. They also feature a pull-off prevention mechanism: the magnetic attraction between the first and second NdFeB magnet arrays 56, 66 is ≥50N, requiring a dedicated torque wrench to separate them.

[0034] Figure 9 Combine Figure 1 and Figure 2It can be seen that the cable 9 is also provided with a telescopic sheath 7, which includes an inner tube 71 detachably connected to the second magnetic body 61. Specifically, the second magnetic body 61 is provided with a boss 63 at one end away from the first magnetic head 5. The boss 63 extends along the axial direction of the second magnetic body 61, and the second through hole 62 passes through the boss 63. The outer periphery of the boss 63 is provided with an external thread, and the inner tube 71 is provided with an internal thread screwed to the external thread, thereby realizing the connection between the telescopic sheath 7 and the magnetic connector.

[0035] The cable 9 is movably threaded through the inner tube 71. An outer tube 72 is fixed to the cable 9. The outer tube 72 is movably sleeved on the inner tube 71 along its axial direction. The inner tube 71 and the outer tube 72 are arranged concentrically. A third spring 73 is provided between the outer wall of the inner tube 71 and the inner wall of the outer tube 72. One end of the third spring 73 abuts the inner tube 71, and the other end abuts the outer tube 72. In this embodiment, the inner tube 71 is sleeved with PTFE, and the outer tube 72 is made of nylon 66 + 30% glass fiber. The use of this material allows the interface to cover a certain angle of swing when the telescopic sheath 7 is extended or retracted.

[0036] from Figure 10 and Figure 11 Combine Figure 2 It can be seen that the cable 9 is sleeved with a clasp 8, which includes an inner ring 81 and an outer ring 82. The inner ring 81 and the outer ring 82 are concentrically arranged. The inner ring 81 is made of silicone, and the outer ring 82 is made of aluminum alloy. Notches 85 are provided at the same radial position of the inner ring 81 and the outer ring 82, and the inner ring 81 and the outer ring 82 are connected by evenly distributed silicone columns 83. The silicone columns 83 extend radially along the inner ring 81 and the outer ring 82, with one end of the silicone column 83 connected to the inner ring 81 and the other end connected to the outer ring 82. A ball 84 is rollingly connected to the position of each silicone column 83 on the outer ring 82. Specifically, spherical notches are evenly distributed on the outer circumference of the outer ring 82, and the balls 84 are rollingly arranged in these spherical notches.

[0037] When in use, the inner ring 81 and the outer ring 82 are separated from the notch 85, and the cable is inserted to complete the fixation. The inner ring 81 is made of silicone material and has high friction with the cable at the contact position, and no axial displacement will occur. When the cable is dragging the ground, the ball is always in contact with the ground. The connecting part between the inner ring 81 and the outer ring 82 is also a silicone column 83, which can undergo elastic deformation, and can greatly cushion and reduce shock, reducing wear caused by direct contact between the cable and the ground.

[0038] The above describes preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. An integrated protection device for geological radar cables and antennas for engineering inspection, characterized by: The invention comprises an antenna protection box (1), wherein an antenna body (2) is placed in the antenna protection box (1) via an antenna bracket (21), wherein the antenna bracket (21) is made of a ceramic rubber composite plate, and one end of the antenna (22) extends out of the antenna protection box (1) and is connected to a cable (9) via a PFC switching structure, and a shock-absorbing wheel (15) is provided at the bottom of the antenna protection box (1).

2. The integrated protection device for geological radar cables and antennas for engineering inspection according to claim 1 is characterized in that: The PFC switching structure comprises a connection frame (13) provided on the antenna protection box (1), a silicone pad (31) being movably provided in the connection frame (13), a flexible circuit board (3) being provided at the upper end of the silicone pad (31), the flexible circuit board (3) being in an Ω-shaped structure, a filling portion (310) matching the structure of the flexible circuit board (3) being provided at the upper portion of the silicone pad (31), one end of the flexible circuit board (3) being welded to the antenna (22), and the other end thereof being welded to the cable (9).

3. The integrated protection device for geological radar cables and antennas for engineering inspection according to claim 2 is characterized in that: A sliding groove (34) is provided in the connecting frame (13), and a sliding block (32) that slidably cooperates with the sliding groove (34) is provided on the silicone pad (31).

4. The integrated protection device for geological radar cables and antennas for engineering inspection according to claim 2, characterized in that: A spherical groove (4) is provided on the outer side of the connection frame (13), and a magnetic joint is movably connected in the spherical groove (4); The magnetic connector includes a first magnetic head (5), the first magnetic head (5) includes a first magnetic body (51) and a spherical connector (52) connected to one end of the first magnetic body (51), the spherical connector (52) is movably arranged in the spherical groove (4), the first magnetic body (51) and the middle of the spherical connector (52) are penetrated by a first through hole (53), the cable (9) is passed through the first through hole (53), the first magnetic body (51) is provided with a first hole portion (54), the first hole portion (54) is provided with a first spring (55), the first spring (55) is fixed to the surface of the cable (9), the two ends of the first spring (55) are respectively abutted against the two ends of the first hole portion (54), and the first magnetic head (5) is evenly distributed with a first neodymium iron boron magnet array (56).

5. The integrated protection device for engineering detection geological radar cable and antenna according to claim 4 is characterized in that: The magnetic connector further comprises a second magnetic head (6) capable of being attracted to the first magnetic head (5), the second magnetic head (6) comprising a second magnetic body (61), a second through hole (62) passing through the middle of the second magnetic body (61), the cable (9) being passed through the second through hole (62), a second hole portion (64) being provided on the second magnetic body (61), a second spring (65) being provided in the second hole portion (64), the second spring (65) being fixed to the surface of the cable (9), the two ends of the second spring (65) respectively abutting against the two ends of the second hole portion (64), and a second NdFeB magnet array (66) being evenly distributed in the second magnetic head (6).

6. The integrated protection device for geological radar cables and antennas for engineering inspection according to claim 5, characterized in that: The first magnetic body (51) is provided with a buckle (57), and the second magnetic body (61) is provided with a slot (67) that matches the buckle (57).

7. The integrated protection device for geological radar cables and antennas for engineering inspection according to claim 5, characterized in that: The invention also includes a telescopic sheath (7), which includes an inner tube (71) detachably connected to the second magnetic body (61), the cable (9) is movably passed through the inner tube (71), an outer tube (72) is fixed on the cable (9), and the outer tube (72) is movably sleeved on the inner tube (71), and a third spring (73) is provided between the outer wall of the inner tube (71) and the inner wall of the outer tube (72), one end of the third spring (73) is in contact with the inner tube (71), and the other end thereof is in contact with the outer tube (72).

8. The integrated protection device for engineering detection geological radar cable and antenna according to claim 7, characterized in that: A boss (63) is provided at one end of the second magnetic body (61) away from the first magnetic head (5); the second through hole (62) passes through the boss (63); an external thread is provided on the outer periphery of the boss (63); and an internal thread is provided on the inner tube (71) to be screwed to the external thread.

9. The integrated protection device for geological radar cables and antennas for engineering inspection according to claim 2, characterized in that: The cable (9) is sleeved with a clamping ring (8), which includes an inner ring (81) and an outer ring (82). The inner ring (81) and the outer ring (82) are concentrically arranged, and a notch (85) is provided at the same radial position corresponding to the inner ring (81) and the outer ring (82). The inner ring (81) and the outer ring (82) are connected by evenly distributed silicone columns (83), and a ball (84) is rollingly connected to the position of each silicone column (83) on the outer ring (82).

10. The integrated protection device for engineering detection geological radar cable and antenna according to claim 9, characterized in that: A spherical notch is provided on the outer periphery of the outer ring (82), and the balls (84) are rolled in the spherical notch.

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