A radar detection device for detecting tunnel lining thickness

Abstract

This utility model relates to the field of radar detection device technology, specifically to a radar detection device for detecting the thickness of tunnel lining. It includes a radar detection device body and a detection head. The radar detection device body is located on top of the detection head. A connecting and mounting assembly is provided at the adjustment end of the bottom of the radar detection device body. The connecting and mounting assembly includes a connecting box, which is fixedly connected to the adjustment end of the radar detection device body. This utility model, by setting up the connecting and mounting assembly and the protective displacement assembly, and through the cooperative relationship between the electromagnetic block, positioning plate, spring, and connecting block, allows the detection head to be buffered by the connecting and mounting assembly and externally protected by the protective displacement assembly. This effectively prevents the detection head from hardly colliding with the tunnel lining surface or obstacles, thus avoiding damage.

Description

Technical Field

[0001] This utility model relates to the field of radar detection device technology, specifically to a radar detection device for detecting the thickness of tunnel lining. Background Technology

[0002] This is a specialized device for tunnel engineering quality inspection. It works based on the principle of radar wave reflection. It emits high-frequency electromagnetic waves into the tunnel lining and receives reflected signals from inside the lining and the interface with the surrounding rock. After data processing and analysis, it accurately obtains the actual thickness information of the lining. This device is characterized by non-contact operation, high efficiency and speed, and intuitive detection results. It is a key device for tunnel construction quality control and operation period maintenance inspection.

[0003] Utility model patent CN216898839U discloses a channel lining thickness detection device, comprising a base plate, multiple sets of synchronous electric cylinders, two sets of support plates, two sets of drive shafts, two sets of bevel gears A, multiple sets of moving wheels, two sets of bevel gears B, a main unit, a detector, a drive assembly, a shock absorption assembly, and an adjustment assembly. The multiple sets of synchronous electric cylinders are symmetrically fixedly installed on the lower end face of the base plate in pairs. The two sets of support plates are symmetrically fixedly connected to the output ends of the two sets of synchronous electric cylinders on the same side. The two sets of drive shafts are rotatably installed on the two sets of support plates. The drive assembly is installed on the upper end face of the base plate, and the two sets of drive shafts are interconnected with the drive assembly. The main unit is installed on the drive assembly through the shock absorption assembly, and the detector is installed on the lower end face of the base plate through the adjustment assembly. The main unit and the detector are electrically connected.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Although existing radar detection devices possess the advantages of non-contact detection and high efficiency, in actual use, the tunnel lining surface is uneven due to construction defects such as template joints and misalignments. Furthermore, there are often unremoved construction debris or small obstacles within the tunnel. This makes it easy for the detection device to accidentally collide or scrape against the lining surface or obstacles during movement, leading to damage to device components and interference with the detection signal. This not only causes inconvenience in use but also reduces the overall effectiveness of the radar detection device. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a radar detection device for detecting the thickness of tunnel lining, which can effectively solve the problem that the detection head is easily damaged by hard collision with the surface of tunnel lining or obstacles in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a radar detection device for detecting the thickness of tunnel lining, comprising: a radar detection device body and a detection head, wherein the radar detection device body is located on top of the detection head, and a connecting and mounting assembly is provided at the adjustment end of the bottom of the radar detection device body, the connecting and mounting assembly includes a connecting box, and the connecting box is fixedly connected to the adjustment end of the radar detection device body, an electromagnetic block is fixedly connected inside the connecting box, a positioning plate is slidably connected to the bottom of the connecting box, and the positioning plate is elastically connected to the connecting box by a spring, and the positioning plate and the electromagnetic block are magnetically repelled, a connecting block is inserted and connected to one side of the positioning plate, and the connecting block is fixedly connected to the detection head, and the connecting block is inserted and connected to the inside of the positioning plate;

[0008] A protective displacement assembly is provided on the outside of the probe. The protective displacement assembly includes a protective box, which is fixedly connected to the outside of the probe. A buffer plate is fixedly connected to the outside of the protective box, and a wear-resistant plate is fixedly connected to the outside of the buffer plate. A movable groove is provided on the top of the connecting block. A plug-in block is elastically connected to the inside of the movable groove by a spring, and the plug-in block is plugged into the bottom of the connecting box.

[0009] Furthermore, a movable plate is elastically connected to one side of the electromagnetic block via a spring, and the movable plate is slidably connected to the inside of the connecting box. The movable plate and the electromagnetic block are magnetically repelled. A pressure sensor is fixedly connected to the side of the movable plate away from the electromagnetic block. The pressure sensor is electrically connected to an alarm via a wire, and the alarm is fixedly connected to the radar detection device body.

[0010] Furthermore, a movable block is slidably connected to the top of the plug-in block, and the movable block is fixedly connected to the movable plate.

[0011] Furthermore, a rubber plate is fixedly connected to the side of the positioning plate near the moving plate, and the side of the moving plate near the positioning plate is inserted into the rubber plate.

[0012] Furthermore, a push plate is fixedly connected to the side of the pressure sensor away from the electromagnetic block, and an elastic plate is fixedly connected to the other side of the push plate.

[0013] Furthermore, a strong magnetic block is magnetically connected to the side of the connecting block near the positioning plate, and the strong magnetic block is fixedly connected to the positioning plate. A slider is elastically connected to the outside of the connecting block by a spring, and the slider is inserted into the inside of the positioning plate.

[0014] Furthermore, a movable block is slidably connected to the inner side of the slider, and the movable block is slidably connected to the interior of the connecting block. The movable block is elastically connected to the interior of the connecting block via a spring. The movable block is magnetically connected to the electromagnetic block and to the strong magnetic block.

[0015] Furthermore, a buffer block is fixedly connected to the side of the positioning plate away from the moving plate, and the buffer block is fixedly connected to the inside of the connecting box.

[0016] Beneficial effects

[0017] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0018] I. This utility model, by setting up components such as a connecting installation assembly and a protective displacement assembly, and through the mutual cooperation between the electromagnetic block, positioning plate, spring and connecting block, enables the probe to be buffered by the connecting installation assembly and externally protected by the protective displacement assembly. In this way, the device can effectively avoid the probe from hard collision with the tunnel lining surface or obstacles, thus preventing damage.

[0019] II. This utility model, by setting up components such as a movable plate, pressure sensor, alarm, movable block, and rubber plate, utilizes the magnetic repulsion between the movable plate and the electromagnetic block, as well as the connection relationship between the movable plate and the pressure sensor, so that when the probe head encounters a collision, the pressure sensor can sense the pressure and trigger the alarm. At the same time, the movable plate pushes the plug-in block to release the probe head through the movable block, and combined with the buffering effect of the rubber plate, the device can promptly warn the user and automatically release the rigid connection to avoid damage to the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0022] Figure 2 This is a bottom-view, three-dimensional, disassembled schematic diagram of this utility model;

[0023] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a three-dimensional sectional view of the connecting block of this utility model.

[0025] Reference numerals: 1. Radar detection device body; 2. Detector head; 3. Connection and installation assembly; 31. Connection box; 32. Electromagnetic block; 33. Positioning plate; 34. Connection block; 4. Protective displacement assembly; 41. Protective box; 42. Buffer plate; 43. Wear-resistant plate; 44. Movable groove; 45. Insertion block; 5. Moving plate; 6. Pressure sensor; 7. Warning device; 8. Moving block; 9. Rubber plate; 10. Push plate; 11. Elastic plate; 12. Strong magnetic block; 13. Slider; 14. Movable block; 15. Buffer block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] See attached document Figure 1-4 A radar detection device for detecting the thickness of tunnel lining includes: a radar detection device body 1 and a detection head 2. The radar detection device body 1 is located on top of the detection head 2. A connection and installation assembly 3 is provided at the adjustment end at the bottom of the radar detection device body 1 to realize quick disassembly and assembly and buffer connection of the detection head 2. The connection and installation assembly 3 includes a connection box 31, and the connection box 31 is fixedly connected to the adjustment end of the radar detection device body 1. An electromagnetic block 32 is fixedly connected inside the connection box 31. The electromagnetic block 32 is existing technology. A positioning plate 33 is slidably connected to the bottom of the connection box 31. The positioning plate 33 is elastically connected to the connection box 31 by a spring. The positioning plate 33 and the electromagnetic block 32 are magnetically repelled. A connecting block 34 is inserted and connected to one side of the positioning plate 33. The connecting block 34 is fixedly connected to the detection head 2 and is inserted and connected to the inside of the positioning plate 33.

[0029] The outer side of the probe head 2 is provided with a protective displacement component 4, which is used to provide external collision protection during the detection process. The protective displacement component 4 includes a protective box 41, and the protective box 41 is fixedly connected to the outer side of the probe head 2. A buffer plate 42 is fixedly connected to the outer side of the protective box 41, and a wear-resistant plate 43 is fixedly connected to the outer side of the buffer plate 42. A movable groove 44 is opened on the top of the connecting block 34. A plug-in block 45 is elastically connected inside the movable groove 44 by a spring, and the plug-in block 45 is plugged into the bottom of the connecting box 31.

[0030] When installing and fixing the probe 2 during use, first activate the electromagnetic block 32 to generate a magnetic repulsion force between it and the positioning plate 33, thereby pushing the positioning plate 33 away from the electromagnetic block 32. Then, insert the connecting block 34, which is fixedly connected to the probe 2, into the bottom of the connecting box 31, and then close the electromagnetic block 32. At this time, the magnetic repulsion between the electromagnetic block 32 and the positioning plate 33 disappears, and the positioning plate 33 moves under the elastic restoring force of its own connecting spring, completing the insertion connection with the connecting block 34, thus achieving a stable connection between the probe 2 and the connecting box 31. At the same time, the movement of the positioning plate 33 allows the probe 2 to move freely. A certain amount of space is retained so that, in the event of a collision, the probe head 2 can buffer the impact force through displacement, avoiding a hard collision. At the same time, the protective box 41 on the outside of the probe head 2 can completely enclose the probe head 2, and the buffer plate 42 on the outside of the protective box 41 can buffer the impact force generated by the collision. The wear-resistant plate 43 on the outside of the buffer plate 42 can reduce wear caused by scratches. The movable groove 44 at the top of the connecting block 34 is equipped with a plug-in block 45. The plug-in block 45 is plugged into and fixed to the bottom of the connecting box 31 by the elastic action of the spring, which improves the stability of the probe head 2 and prevents the probe head 2 from shifting due to device shaking during use.

[0031] The top of the plug-in block 45 is slidably connected to the movable block 8, and the movable block 8 is fixedly connected to the movable plate 5. The top of the plug-in block 45 is slidably connected to the movable block 8, and the movable block 8 is fixed to the movable plate 5. When the movable plate 5 is subjected to a collision force and moves accordingly, it will synchronously drive the movable block 8 fixed to it to move together. During the movement of the movable block 8, it will apply a pushing force to the plug-in block 45 below, causing the plug-in block 45 to separate from the bottom of the connecting box 31. When the plug-in block 45 moves, it will compress the spring connected to it, so that it can retract into the movable groove 44 of the connecting block 34, thereby allowing the probe head 2 and related components to move flexibly, thereby avoiding hard collisions with other objects.

[0032] A buffer block 15 is fixedly connected to the side of the positioning plate 33 away from the moving plate 5, and the buffer block 15 is fixedly connected to the inside of the connecting box 31. When the positioning plate 33 is subjected to a collision force and moves accordingly, the buffer block 15 can directly block the excessive movement of the positioning plate 33, and at the same time absorb the kinetic energy generated during the movement of the positioning plate 33 by its own elasticity, thereby avoiding a hard collision between the positioning plate 33 and the inner wall of the connecting box 31. The buffer block 15 can also quickly buffer the displacement of the positioning plate 33, effectively reducing the shaking effect of the displacement of the positioning plate 33 on the probe head 2.

[0033] One side of the electromagnetic block 32 is elastically connected to a movable plate 5 via a spring, and the movable plate 5 is slidably connected to the interior of the connecting box 31. The movable plate 5 and the electromagnetic block 32 are magnetically repelled. A pressure sensor 6 is fixedly connected to the side of the movable plate 5 away from the electromagnetic block 32. The pressure sensor 6 is existing technology. The pressure sensor 6 is electrically connected to an alarm 7 via a wire. The alarm 7 is existing technology and is fixedly connected to the radar detection device body 1. The electromagnetic block 32 and the movable plate 5 are both magnetically repelled and elastically connected via a spring. The pressure sensor 6 fixed on the movable plate 5 can sense the pressure change caused by collisions in the front of the moving device. When the sensed pressure reaches a preset value, the pressure sensor 6 transmits a signal to the alarm 7 via a wire. The alarm 7 activates immediately upon receiving the signal, thus warning the user and preventing further damage to the equipment. The positioning plate 33 is located near the movable plate 5. A rubber plate 9 is fixedly connected to the side of the moving plate 5, which is close to the positioning plate 33. The rubber plate 9 on the positioning plate 33 can be inserted and attached to the moving plate 5 when the moving plate 5 is close. When the moving plate 5 collides with an object on its front side, the moving plate 5 will push the positioning plate 33 to move, so that the positioning plate 33 can move the probe head 2 for protection. The elasticity and buffering performance of the rubber plate 9 can absorb part of the impact force, avoid direct rigid contact between the moving plate 5 and the positioning plate 33, reduce component wear, and extend the service life of the device. A push plate 10 is fixedly connected to the side of the pressure sensor 6 away from the electromagnetic block 32, and an elastic plate 11 is fixedly connected to the other side of the push plate 10. The elastic plate 11 can first contact the colliding object and absorb part of the impact force, while the push plate 10 smoothly transmits the remaining force to the pressure sensor 6. This ensures that the pressure sensor 6 can accurately sense pressure changes and avoids damage due to excessive direct force, thus extending the stability of the pressure sensor 6.

[0034] Among them, a strong magnetic block 12 is magnetically connected to the side of the connecting block 34 near the positioning plate 33, and the strong magnetic block 12 is fixedly connected to the positioning plate 33. A slider 13 is elastically connected to the outside of the connecting block 34 via a spring, and the slider 13 is inserted into the inside of the positioning plate 33. The strong magnetic block 12 and the connecting block 34 are magnetically attracted, so that the connecting block 34 can maintain a stable contact connection with the positioning plate 33. The slider 13 slides inside the positioning plate 33, which enhances the fixed stability between the connecting block 34 and the positioning plate 33. A movable block 14 is slidably connected to the inside of the slider 13, and the movable block 14 is slidably connected to the inside of the connecting block 34. 14 is elastically connected to the internal connection block 34 via a spring. The movable block 14 is magnetically connected to the electromagnetic block 32 and the strong magnetic block 12. The strong magnetic block 12 can generate a magnetic attraction to the movable block 14. When the movable block 14 is subjected to the magnetic attraction, it can generate a pushing force on the slider 13, pushing the slider 13 to extend outward and thus complete the insertion and engagement with the inside of the positioning plate 33. At the same time, when the electromagnetic block 32 is activated, the movable block 14 will reset accordingly. At this time, the movable block 14 no longer limits the slider 13, and the slider 13 will automatically retract under the elastic force of the spring connected to it, thus facilitating subsequent disassembly operations.

[0035] Working principle: In use, first, the detector head 2 needs to be installed and fixed. Then, the electromagnetic block 32 inside the connecting box 31 at the bottom of the radar detection device body 1 is activated. The electromagnetic block 32 generates a magnetic repulsion force with the positioning plate 33, pushing the positioning plate 33 away from the electromagnetic block 32. Next, the connecting block 34, which is fixedly connected to the detector head 2, is aligned with the bottom of the connecting box 31 and inserted. Then, the electromagnetic block 32 is closed, and its magnetic repulsion on the positioning plate 33 disappears. The positioning plate 33 resets under the elastic restoring force of its own connecting spring, completing the insertion connection with the connecting block 34. Simultaneously, one side of the connecting block 34 is subjected to strong... The magnetic block 12 and the positioning plate 33 are magnetically attracted. Under the magnetic attraction of the strong magnetic block 12 to the movable block 14, the slider 13 on the outside of the connecting block 34 is pushed outward by the movable block 14 and inserted into the positioning plate 33, further enhancing the fixed stability of the connecting block 34 and the positioning plate 33. The insertion block 45 in the movable groove 44 at the top of the connecting block 34 is inserted and fixed to the bottom of the connecting box 31 by the elastic action of the spring, so as to prevent the probe 2 from shifting due to the shaking of the device during use. Thus, the stable installation of the probe 2 is completed, and the movable design of the positioning plate 33 provides a buffer space for the probe 2.

[0036] After installation, when entering the tunnel lining thickness detection operation, the protective box 41 on the outside of the detector head 2 completely covers the detector head 2. The buffer plate 42 on the outside of the protective box 41 can buffer the impact force generated by the collision. The wear-resistant plate 43 on the outside of the buffer plate 42 can reduce the scratching and wear between the detector and the lining surface during the movement of the detector, ensuring the structural integrity of the detector head 2 and ensuring the stability of the detection signal. When the detector encounters a protrusion or obstacle on the lining surface during the movement of the detector, the elastic plate 11 of the protective displacement component 4 first contacts the collision object and absorbs part of the impact force. The remaining force is smoothly transmitted to the pressure sensor 6 through the push plate 10. When the pressure reaches the preset value, the pressure sensor 6 transmits the signal to the warning device 7 on the radar detection device body 1 through the wire. The warning device 7 is immediately activated to remind the user to stop moving forward and avoid further damage to the equipment.

[0037] Meanwhile, the force generated by the collision will push the movable plate 5 to move. The movable plate 5 and the electromagnetic block 32 are both magnetically repelled and elastically connected by a spring. Its movement will synchronously drive the movable block 8 to move. The movable block 8 applies a pushing force to the lower insertion block 45, causing the insertion block 45 to compress its connected spring and retract into the movable slot 44 of the connecting block 34, releasing the insertion and fixing of the probe head 2 and the connecting box 31. At this time, the probe head 2 can flexibly move through the movement of the positioning plate 33, avoiding hard contact with the colliding object. The rubber plate 9 on the side of the positioning plate 33 near the movable plate 5 will insert and adhere to the movable plate 5, absorbing part of the impact force and reducing component wear caused by direct rigid contact between the two. The buffer block 15 on the side away from the moving plate 5 can prevent the positioning plate 33 from moving excessively. It absorbs the kinetic energy of the positioning plate 33's movement with its own elasticity, avoiding a hard collision with the inner wall of the connecting box 31. At the same time, it quickly buffers the displacement of the positioning plate 33, reducing the impact of shaking on the probe head 2 and ensuring the continuity of the detection work. If the probe head 2 needs to be disassembled later, the electromagnetic block 32 can be activated again. The moving block 14 will be reset under the magnetic action of the electromagnetic block 32 and will no longer limit the slider 13. The slider 13 will automatically retract under the elastic force of the spring connected to it. Then, the positioning plate 33 will be moved away from the electromagnetic block 32 due to the magnetic repulsion, and the connecting block 34 can be easily removed from the positioning plate 33 to complete the disassembly of the probe head 2.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A radar detection device for detecting the thickness of tunnel lining, comprising a radar detection device body (1) and a detection head (2), characterized in that: The radar detection device body (1) is located on top of the detector head (2). The adjustment end of the radar detection device body (1) is provided with a connection and installation assembly (3). The connection and installation assembly (3) includes a connection box (31), and the connection box (31) is fixedly connected to the adjustment end of the radar detection device body (1). An electromagnetic block (32) is fixedly connected inside the connection box (31). A positioning plate (33) is slidably connected to the bottom of the connection box (31). The positioning plate (33) is elastically connected to the connection box (31) by a spring. The positioning plate (33) and the electromagnetic block (32) are magnetically repelled. A connecting block (34) is inserted into one side of the positioning plate (33). The connecting block (34) is fixedly connected to the detector head (2). The connecting block (34) is inserted into the interior of the positioning plate (33). The outer side of the probe (2) is provided with a protective displacement assembly (4), which includes a protective box (41) and is fixedly connected to the outer side of the probe (2). A buffer plate (42) is fixedly connected to the outer side of the protective box (41), and a wear-resistant plate (43) is fixedly connected to the outer side of the buffer plate (42). A movable groove (44) is provided on the top of the connecting block (34), and a plug-in block (45) is elastically connected to the inside of the movable groove (44) by a spring. The plug-in block (45) is plugged into the bottom of the connecting box (31).

2. The radar detection device for detecting tunnel lining thickness according to claim 1, characterized in that, A movable plate (5) is elastically connected to one side of the electromagnetic block (32) by a spring, and the movable plate (5) is slidably connected to the inside of the connecting box (31). The movable plate (5) and the electromagnetic block (32) are magnetically repelled. A pressure sensor (6) is fixedly connected to the side of the movable plate (5) away from the electromagnetic block (32). The pressure sensor (6) is electrically connected to an alarm (7) through a wire, and the alarm (7) is fixedly connected to the radar detection device body (1).

3. The radar detection device for detecting tunnel lining thickness according to claim 2, characterized in that, The top of the plug-in block (45) is slidably connected to a movable block (8), and the movable block (8) is fixedly connected to the movable plate (5).

4. A radar detection device for detecting tunnel lining thickness according to claim 2, characterized in that, A rubber plate (9) is fixedly connected to the side of the positioning plate (33) near the moving plate (5), and the side of the moving plate (5) near the positioning plate (33) is inserted into the rubber plate (9).

5. A radar detection device for detecting tunnel lining thickness according to claim 2, characterized in that, The pressure sensor (6) is fixedly connected to a push plate (10) on the side away from the electromagnetic block (32), and an elastic plate (11) is fixedly connected to the other side of the push plate (10).

6. A radar detection device for detecting tunnel lining thickness according to claim 1, characterized in that, The connecting block (34) is magnetically connected to a strong magnetic block (12) on the side near the positioning plate (33), and the strong magnetic block (12) is fixedly connected to the positioning plate (33). The outer side of the connecting block (34) is elastically connected to a slider (13) by a spring, and the slider (13) is inserted into the interior of the positioning plate (33).

7. A radar detection device for detecting tunnel lining thickness according to claim 6, characterized in that, The slider (13) is slidably connected to the inner side of the movable block (14), and the movable block (14) is slidably connected to the interior of the connecting block (34). The movable block (14) is elastically connected to the interior of the connecting block (34) by a spring. The movable block (14) is magnetically connected to the electromagnetic block (32), and the movable block (14) is magnetically connected to the strong magnetic block (12).

8. A radar detection device for detecting tunnel lining thickness according to claim 2, characterized in that, The positioning plate (33) is fixedly connected to a buffer block (15) on the side away from the moving plate (5), and the buffer block (15) is fixedly connected to the inside of the connecting box (31).

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