Tunnel construction period machine vision equipment protection device and installation method

Abstract

The invention belongs to the technical field of tunnel construction monitoring, and provides a protection device for machine vision equipment in a tunnel construction period and an installation method, aiming at the problem that the machine vision equipment applied to tunnel deformation monitoring in the prior art is insufficient in the aspect of device protection. The machine vision equipment protection device for the tunnel construction period comprises a protection shell, a damping device, a camera supporting plate and a device bracket, the protection shell is arranged on the device bracket, the camera supporting plate and the damping device are both arranged in the protection shell, and the camera supporting plate is connected with the inner wall of the protection shell through the damping device; through the design of the protective shell and the damping device, machine vision equipment can be protected, damage to the machine vision monitoring equipment caused by factors such as dust, moisture and flying stones is avoided, vibration interference can be reduced, and reliability of monitoring data is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction monitoring, and in particular relates to a machine vision equipment protection device and an installation method during tunnel construction. Background Art

[0002] The safety monitoring of structural deformation during tunnel construction is an important guarantee for ensuring the safety of tunnel construction and long-term stability, safety, durability and reliability during the operation period. With the rapid development of machine vision technology, with its advantages of high efficiency, accuracy and low cost, equipment has been applied to the field of tunnel deformation safety monitoring. However, factors such as dust, humidity, flying stones and vibration in the tunnel construction environment have a great impact on the stability and reliability of machine vision equipment. The machine vision equipment currently used for tunnel deformation monitoring often adopts a simple connection method to fix the connection with the tunnel wall, without any protection measures or imperfect protection measures, which makes the equipment itself easy to damage, and the monitoring data is unreliable, making it impossible to accurately make tunnel deformation safety warnings.

[0003] Therefore, it is necessary to design a protective device that can filter dust, prevent moisture, dissipate heat, prevent flying stones and prevent vibration interference to protect the machine vision equipment used during tunnel construction. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a machine vision equipment protection device and an installation method during tunnel construction.

[0005] The first object of the present invention is to provide a protective device for machine vision equipment during tunnel construction, comprising a protective shell for isolating dust, water vapor and flying rocks caused by blasting inside the tunnel, a shock-absorbing device for buffering vibrations of machine vision equipment used for monitoring structural deformation during tunnel construction, and a camera support plate and a device bracket for supporting the machine vision equipment used for monitoring structural deformation during tunnel construction, wherein the protective shell is arranged on the device bracket, the device bracket is connected to the inner wall of the tunnel, the camera support plate and the shock-absorbing device are both arranged inside the protective shell, and the camera support plate is connected to the inner wall of the protective shell through the shock-absorbing device.

[0006] Preferably, the protective shell includes dust-proof glass, two dust filters, two heat dissipation holes and two moisture-proof layers. An opening is provided on the front side of the protective shell, the dust-proof glass is arranged at the opening, the two heat dissipation holes are symmetrically opened on two opposite sides of the protective shell, the two dust filters are respectively arranged in the corresponding two heat dissipation holes, the two moisture-proof layers are respectively symmetrically arranged inside the protective shell, and the position of each moisture-proof layer is directly opposite to the corresponding two heat dissipation holes.

[0007] Preferably, a first limiting groove and a third limiting groove are respectively provided on the upper surface and the lower surface of the camera support plate, the first limiting groove is used to place the camera, and a plurality of second limiting grooves are respectively provided on the left side, the right side and the rear side of the camera support plate, and a buffer pad layer is provided inside the first limiting groove and the third limiting groove.

[0008] Preferably, the shock absorbing device comprises a second shock absorbing mechanism, a third shock absorbing mechanism and two first shock absorbing mechanisms, the two first shock absorbing mechanisms are symmetrically arranged on the left and right sides of the camera support plate, and one end of each of the first shock absorbing mechanisms is connected to the corresponding second limiting groove, and the other end is connected to the inner wall of the protective shell; One end of the second shock absorbing mechanism is connected to the second limiting groove on the rear side of the camera support plate, and the other end is connected to the inner wall of the rear side of the protective shell; one end of the third shock absorbing mechanism is connected to the bottom of the camera support plate, and the other end is connected to the inner wall of the bottom of the protective shell; The first shock absorbing mechanism and the second shock absorbing mechanism have the same structure.

[0009] Preferably, the first shock absorbing mechanism comprises a plurality of shock absorbing units arranged in parallel and at intervals, one end of each shock absorbing unit is connected to the corresponding second limiting groove, and the other end is connected to the inner wall of the protective shell; Each shock absorbing unit comprises a first spring damper, an adjusting mechanism and a T-shaped plate. One end of the first spring damper is connected to the second limiting groove, and the other end is connected to the adjusting mechanism. The adjusting mechanism is connected to the inner wall of the protective shell through the T-shaped plate.

[0010] Preferably, the first spring damper includes a return spring, a damper and a first limit plate, the return spring is arranged on the damper, and one end of the return spring is connected to the damper, and the other end is connected to the first limit plate, the first limit plate is inserted into the interior of the second limit groove, and the end of the damper away from the first limit plate is connected to the adjustment mechanism.

[0011] Preferably, the adjustment mechanism includes a clamp, two rotating shafts, two first fixed plates and two first fixed nuts, the clamp includes a sliding plate of a U-shaped structure and two clamping plates, one end of the sliding plate is connected to the first spring damper, and the other end is slidably connected to the flange end of the T-shaped plate, the two clamping plates are symmetrically arranged on the side surfaces of the flange end of the T-shaped plate close to the inner wall of the protective shell, and the two clamping plates are rotatably connected to the two ends of the sliding plate through the rotating shaft, the two first fixed plates are vertically symmetrically arranged on the opposite side surfaces of the web of the T-shaped plate, and the first fixed plate and the clamping plate on the same side are fixed by the first fixing nuts.

[0012] Preferably, the third damping mechanism comprises a weighing platform, a base, a plurality of second limit plates, a plurality of restoring springs, a plurality of fourth limit grooves and a plurality of electronic dampers, the weighing platform is arranged inside the third limit groove, the plurality of fourth limit grooves are respectively opened at the bottom of the weighing platform, the plurality of second limit plates are respectively embedded in the corresponding plurality of fourth limit grooves, and the base is embedded in the inner wall of the bottom of the protective housing; Multiple electronic dampers are arranged between multiple second limit plates and the base, the bottom end of each electronic damper is connected to the base, multiple recovery springs are respectively arranged on the corresponding electronic dampers, and one end of each recovery spring is connected to the corresponding electronic damper, the other end is connected to the corresponding second limit plate above the recovery spring, and the bottom end is connected to the base, a gravity sensor is arranged inside the weighing platform, a damping controller is arranged on the base, and the gravity sensor and multiple electronic dampers are electrically connected to the damping controller.

[0013] Preferably, the device bracket includes a second fixing plate, a second fixing nut, a third fixing plate, a third fixing nut and a diagonal rod, the second fixing plate and the third fixing plate are vertically connected, the second fixing plate is arranged at the bottom of the protective shell, and the second fixing plate is connected to the protective shell through the second fixing nut, the third fixing plate is connected to the external tunnel wall through the third fixing nut, the diagonal rod is arranged between the second fixing plate and the third fixing plate, and the two ends of the diagonal rod are respectively connected to the second fixing plate and the third fixing plate.

[0014] The second object of the present invention is to provide a method for installing the above-mentioned machine vision equipment protection device during tunnel construction, comprising the following steps: S1. Before tunnel deformation monitoring, a camera is placed in a first limiting groove of a camera support plate. After a gravity sensor arranged inside the weighing platform obtains gravity information of the camera, the gravity information is transmitted to a damping controller arranged inside the base. The damping controller performs damping compensation on the electronic damper according to the gravity information, so that the shock absorbing capacity of the electronic damper is the same as that of the first spring damper and the second spring damper. S2. After the horizontal height of the camera support plate remains unchanged, adjust the first spring damper and the second spring damper to make the horizontal height of the first limit plate consistent with the height of the camera support plate, rotate the end of the card plate to the inner side of the flange of the T-shaped plate through the rotating shaft, and then tighten the first fixing nut to make the first fixing nut squeeze the card plate, fix the card plate and the T-shaped plate, and the first limit plate is embedded in the second limit groove; S3. Connect the second fixing plate to the protective housing through the second fixing nut, and connect the third fixing plate to the external tunnel wall through the third fixing nut to complete the installation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The machine vision equipment protection device provided by the present invention protects the machine vision equipment through a protective shell to prevent the equipment from being damaged by flying rocks during blasting; the protective shell is provided with heat dissipation holes to realize the heat dissipation function of the equipment; at the same time, based on the characteristics of humidity and dust in the tunnel, the protective shell is also provided with a dust filter net, and a moisture-proof layer is provided inside the protective shell. The design of the moisture-proof layer can prevent dust and water vapor from damaging the equipment over time, thereby improving the stability of the monitoring equipment; (2) The present invention adopts the design of the shock absorbing device in three directions, so that there is no direct connection between the machine vision device and the protective housing, so that after the protective housing is vibrated, the vibration interference can be transmitted to the shock absorbing device. The shock absorbing device can reduce the vibration, so that the vibration interference to the machine vision device is greatly reduced, thereby ensuring the reliability of the monitoring data; (3) The third shock absorbing mechanism in the present invention can compensate for the damping of the electronic damper in the direction of gravity according to the weight of the machine vision device, so that its shock absorbing capacity is consistent with that of the first spring damper and the second spring damper, and the heights of the first spring damper and the second spring damper are adjustable. Therefore, the present invention can be applied to different monitoring devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the machine vision equipment protection device during tunnel construction provided by Example 1 of the present invention; Figure 2 is a schematic diagram of the internal structure of the protective housing in Embodiment 1 of the present invention; Figure 3 is a top view of the camera support plate in Embodiment 1 of the present invention; Figure 4 is a bottom view of the camera support plate in Embodiment 1 of the present invention; Figure 5 is a top view of the internal structure of the protective housing in Embodiment 1 of the present invention; Figure 6 is a front view of the internal structure of the protective housing in Embodiment 1 of the present invention; Figure 7 is a schematic diagram of the connection structure between the shock absorbing unit, the second limiting groove and the protective housing in Example 1 of the present invention; Figure 8 is a schematic structural diagram of the third damping mechanism in Embodiment 1 of the present invention; Fig. 9 is a schematic diagram of the connection structure between the device bracket and the protective housing in Example 1 of the present invention; In the figure: camera 1, protective housing 2, dust filter 21, heat dissipation hole 22, moisture-proof layer 23, dust-proof glass 24, bolt hole 25, shock absorbing device 3, first shock absorbing mechanism 31, return spring 311, damper 312, first limit plate 313, sliding plate 314, rotating shaft 315, card plate 316, second shock absorbing mechanism 32, third shock absorbing mechanism 33, electronic damper 331, second limit plate 332, return spring Spring-333, T-plate-34, first fixing plate-35, first fixing nut-36, weighing platform-37, fourth limiting groove-372, base-38, damping controller-381, camera support plate-4, first limiting groove-41, second limiting groove-42, third limiting groove-43, buffer pad-44, device bracket-5, second fixing plate-51, second fixing nut-52, third fixing plate-53, third fixing nut-54, diagonal rod-55. DETAILED DESCRIPTION

[0017] The following is a description of the embodiments of the present invention. Figures 1 to 9 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0018] like Figures 1 to 9As shown, an embodiment of the present invention provides a protective device for machine vision equipment during tunnel construction, including a protective shell 2 for isolating dust, water vapor and blasting flying rocks inside the tunnel, a shock absorbing device 3 for shock buffering the machine vision equipment used for structural deformation monitoring during tunnel construction, a camera support plate 4 and a device bracket 5 for supporting the machine vision equipment used for structural deformation monitoring during tunnel construction, the protective shell 2 is arranged on the device bracket 5, the device bracket 5 is connected to the inner wall of the tunnel, the camera support plate 4 and the shock absorbing device 3 are both arranged inside the protective shell 2, and the camera support plate 4 is connected to the inner wall of the protective shell 2 through the shock absorbing device 3. The camera support plate 4 is used to place the camera 1, and the camera 1 is used to monitor the deformation of the tunnel; in the embodiment of the present invention, since the device bracket 5 is fixedly connected to the inner wall of the tunnel, when the vibration interference generated by blasting construction or vehicle driving is transmitted to the position of the camera 1, the vibration interference is first transmitted to the device bracket 5 connected to the inner wall of the tunnel, and then transmitted to the protective shell 2. Since the camera 1 and the protective shell 2 are not directly connected, but connected through the shock absorbing device 3, the vibration interference received by the protective shell 2 will first be transmitted to the shock absorbing device 3, and then transmitted to the camera support plate 4 by shock absorbing and buffering through the shock absorbing device 3, so that the impact of the vibration interference on the accuracy of the monitoring data is greatly reduced. The top of the protective shell 2 in the embodiment of the present invention is detachably provided with a top cover, which is specifically covered on the top of the protective shell 2, and bolt holes are provided at the four corners of the top of the protective shell 2. The top cover is fixed to the bolt holes 25 on the protective shell 2 by bolts; by opening the top cover, the height of the first spring damper and the second spring damper is adjusted, and the camera 1 is put in or taken out.

[0019] In the embodiment of the present invention, the protective shell 2 includes a dustproof glass 24, two dust filters 21, two heat dissipation holes 22 and two moisture-proof layers 23. An opening is provided on the front side of the protective shell 2, and the dustproof glass 24 is arranged at the opening. The dustproof glass 24 is transparent glass. Since there is a lot of dust during the tunnel construction period, the dustproof glass 24 is arranged on the front side of the protective shell 2 so that the dustproof glass 24 is located directly in front of the camera 1 viewing angle. This will not only prevent the camera 1 from being blocked, so that the tunnel deformation monitoring can be carried out smoothly, but also prevent dust from accumulating in the protective shell 2 and affecting the line of sight. Moreover, through the design of the protective shell 2, it is possible to block the flying rocks caused by blasting inside the tunnel and prevent the flying rocks from blasting. Stone damages the equipment; two heat dissipation holes 22 are symmetrically opened on two opposite sides of the protective shell 2. The design of the heat dissipation holes 22 can dissipate the heat generated by the camera 1 when it is working, and avoid heat accumulation and overheating and damage to the camera 1; two dust filters 21 are respectively arranged in the corresponding two heat dissipation holes 22. Due to the high dust concentration during tunnel construction, dust will enter the protective shell 2 from the heat dissipation holes 22, which may easily cause damage to the camera 1 for a long time. Therefore, the embodiment of the present invention further adds a dust filter 21 in the heat dissipation hole 22 to prevent dust from entering; two moisture-proof layers 23 are respectively symmetrically arranged inside the protective shell 2, and the position of each moisture-proof layer 23 is opposite to the corresponding two heat dissipation holes 22. Since the air is humid during tunnel construction, water vapor will enter the protective housing 2 from the heat dissipation holes 22, which may cause damage to the camera 1 over a long period of time, so a moisture-proof layer 23 is designed. In the specific design of this embodiment, the moisture-proof layer 23 and the protective housing 2 are designed to be detachably connected. Through such a design, when the moisture-proof layer 23 has high humidity and poor water absorption effect, it is convenient to disassemble and replace the moisture-proof layer 23, thereby avoiding water vapor from damaging the camera 1. At the same time, when setting the position of the moisture-proof layer 23, not only should the position of each moisture-proof layer 23 be aligned with the corresponding heat dissipation hole 22, but also a certain distance should be left between the moisture-proof layer 23 and the heat dissipation hole 22, so that the heat dissipation of the camera 1 will not be affected while absorbing water vapor.

[0020] In the embodiment of the present invention, the upper surface and the lower surface of the camera support plate 4 are respectively provided with a first limiting groove 41 and a third limiting groove 43, the first limiting groove 41 is used to place the camera 1, and the left side, right side and rear side of the camera support plate 4 are respectively provided with a plurality of second limiting grooves 42, and a buffer layer 44 is provided inside the first limiting groove 41 and the third limiting groove 43. The design of the first limiting groove 41 and the third limiting groove 43 can limit the displacement of the camera 1 and the weighing platform 37 respectively, and the design of the buffer layer 44 can reduce the vibration interference from the protective housing 2; the second limiting groove 42 and the first limiting plate 313 are used in combination to prevent the camera support plate 4 from tipping over.

[0021] In the embodiment of the present invention, the shock absorbing device 3 includes a second shock absorbing mechanism 32, a third shock absorbing mechanism 33 and two first shock absorbing mechanisms 31, the two first shock absorbing mechanisms 31 are symmetrically arranged on the left and right sides of the camera support plate 4, and one end of each of the first shock absorbing mechanisms 31 is connected to the corresponding second limiting groove 42, and the other end is connected to the inner wall of the protective shell 2; one end of the second shock absorbing mechanism 32 is connected to the second limiting groove 42 on the rear side of the camera support plate 4, and the other end is connected to the inner wall of the rear side of the protective shell 2; one end of the third shock absorbing mechanism 33 is connected to the bottom of the camera support plate 4, and the other end is connected to the bottom inner wall of the protective shell 2; the first shock absorbing mechanism 31 and the second shock absorbing mechanism 32 have the same structure.

[0022] In the embodiment of the present invention, the first shock absorbing mechanism 31 includes a plurality of shock absorbing units arranged in parallel and at intervals, one end of each shock absorbing unit is connected to the corresponding second limiting groove 42, and the other end is connected to the inner wall of the protective shell 2; each shock absorbing unit includes a first spring damper, an adjustment mechanism and a T-plate 34, one end of the first spring damper is connected to the second limiting groove 42, and the other end is connected to the adjustment mechanism, and the adjustment mechanism is connected to the inner wall of the protective shell 2 through the T-plate 34.

[0023] In the embodiment of the present invention, the first spring damper includes a return spring 311, a damper 312 and a first limit plate 313. The return spring 311 is arranged on the damper 312, and one end of the return spring 311 is connected to the damper 312, and the other end is connected to the first limit plate 313. The first limit plate 313 is inserted and arranged inside the second limit groove 42, and one end of the damper 312 away from the first limit plate 313 is connected to the adjustment mechanism. In this embodiment, the return spring 311 is specifically wound around the damper 312, and one end of the return spring 311 is connected to the base of the damper 312, and the other end is connected to the first limit plate 313.

[0024] In the embodiment of the present invention, the adjustment mechanism includes a clamping plate, two rotating shafts 315, two first fixing plates 35 and two first fixing nuts 36. The clamping plate includes a sliding plate 314 and two clamping plates 316 of a U-shaped structure. One end of the sliding plate 314 is connected to the first spring damper, and the other end is slidably connected to the flange end of the T-shaped plate 34 (specifically, the groove portion of the sliding plate 314 is slidably clamped with the flange end of the T-shaped plate 34). The sliding plate 314 is slidably connected to the flange end of the T-shaped plate 34, so that the sliding plate 314 can slide up and down along the flange end of the T-shaped plate 34, thereby driving the first spring damper to move up and down. Therefore, it can match the heights of different camera trays 4. The two clamping plates 316 are symmetrically arranged on one side of the flange end of the T-shaped plate 34 close to the inner wall of the protective shell 2. Specifically, there is a certain gap between the clamping plate 316 and the surface of the flange end of the T-shaped plate 34, and the two clamping plates 316 are rotatably connected to the two ends of the sliding plate 314 through the rotating shaft 315. The two first fixed plates 35 are vertically symmetrically arranged on the opposite side surfaces of the web of the T-shaped plate 34. The first fixed plate 35 and the clamping plate 316 on the same side are fixed by the first fixing nut 36. The first fixed plate 35 is reserved with a threaded hole for the first fixing nut 36 to pass through. By rotating the card plate 316 to the outside of the T-shaped plate 34 through the rotating shaft 315, the sliding plate 314 can slide up and down along the flange end of the T-shaped plate 34 to adjust the height of the first spring damper and the second spring damper. When the height is adjusted, the card plate 316 is rotated in the opposite direction to the inside of the flange of the T-shaped plate 34, and the first fixing nut 36 is screwed to make it pass through the first fixing plate 35, thereby squeezing the card plate 316 and pushing the card plate 316 to move forward until it is tightly against the reset spring 311, thereby fixing the card plate 316 and the T-shaped plate. At this time, the card plate 316 moves forward, driving the first limiting plate 313 to be inserted into the inside of the second limiting groove 42.

[0025] In the embodiment of the present invention, the third shock absorbing mechanism 33 includes a weighing platform 37, a base 38, a plurality of restoring springs 333, a plurality of second limiting plates 332, a plurality of fourth limiting grooves 372 and a plurality of electronic dampers 331, the weighing platform 37 is arranged inside the third limiting groove 43, a plurality of fourth limiting grooves 372 are respectively opened at the bottom of the weighing platform 37, a plurality of second limiting plates 332 are respectively embedded in the corresponding fourth limiting grooves 372, the base 38 is embedded on the inner wall of the bottom of the protective housing 2, and a plurality of electronic dampers 331 are arranged on the plurality of second limiting grooves 372. The positioning plate 332 and the base 38 are arranged between the positioning plate 332 and the base 38, and the bottom end of each electronic damper 331 is connected to the base 38, multiple restoring springs 333 are respectively arranged on the corresponding multiple electronic dampers 331, and one end of each restoring spring 333 is connected to the corresponding electronic damper 331, and the other end is connected to the corresponding second limiting plate 332 above the restoring spring 333. A gravity sensor is arranged inside the weighing platform 37, and a damping controller 381 is arranged on the base 38. The gravity sensor and the multiple electronic dampers 331 are electrically connected to the damping controller 381.

[0026] After the camera 1 is placed on the camera support plate 4, the restoring spring 333 on the electronic damper 331 is compressed due to gravity, and its length is shortened, and the shock absorption capacity is weakened. In order to solve this problem, a gravity sensor is set in the weighing platform 37. After obtaining the gravity information of the camera 1, the gravity sensor transmits the gravity information (electrical signal) to the damping controller 381 set in the base 38. The damping controller 381 performs damping compensation on the electronic damper 331 according to the gravity information (electrical signal), so that the shock absorption capacity of the electronic damper 331 is the same as that of the first spring damper and the second spring damper.

[0027] After the camera 1 is placed on the camera support plate 4, the restoring spring 333 of the electronic damper 331 is compressed due to gravity, and its spring length is shortened, so that the camera support plate 4 descends. At this time, the first spring damper and the second spring damper are adjusted so that the height of the first limit plate 313 is consistent with the height of the second limit groove 42 on the surface of the camera support plate 4, and then the end of the clamping plate 316 is rotated to the inner side of the flange of the T-shaped plate 34 through the rotating shaft 315, and the first fixing nut 36 is screwed to pass through the first fixing plate 35, thereby squeezing the clamping plate 316 to play a fixing role. At the same time, due to the thrust, the surface of the first limit plate 313 of the first spring damper and the second spring damper is in contact with the groove surface of the second limit groove 42. When the embodiment of the present invention is specifically designed, the distance from the rotating shaft 315 to the end of the clamping plate 316 should be smaller than the distance from the end of the clamping plate 316 to the first fixed plate 35 after the end of the clamping plate 316 rotates to the inner side of the flange of the T-shaped plate 34, so as to prevent the end of the clamping plate 316 from being unable to rotate to the inner side of the flange of the T-shaped plate 34.

[0028] This embodiment can perform damping compensation in the direction of gravity according to the weight of the monitoring device, and the heights of the first spring damper and the second spring damper are adjustable, so the present invention is applicable to different monitoring devices.

[0029] In the embodiment of the present invention, the device bracket 5 includes a second fixing plate 51, a second fixing nut 52, a third fixing plate 53, a third fixing nut 54 and an inclined rod 55, the second fixing plate 51 and the third fixing plate 53 are vertically connected, the second fixing plate 51 is arranged at the bottom of the protective housing 2, and the second fixing plate 51 is connected to the protective housing 2 through the second fixing nut 52, the third fixing plate 53 is connected to the external tunnel wall through the third fixing nut 54, the inclined rod 55 is arranged between the second fixing plate 51 and the third fixing plate 53, and the two ends of the inclined rod 55 are respectively connected to the second fixing plate 51 and the third fixing plate 53. The inclined rod 55 is welded with the device bracket 5 to form a triangle, which enhances the stability of the device bracket 5. Example 2

[0030] With respect to the machine vision equipment protection device during tunnel construction of Example 1, an embodiment of the present invention provides an installation method, comprising the following steps: S1. Before tunnel deformation monitoring, the camera 1 is placed in the first limiting groove 41 of the camera support plate 4. After the gravity sensor arranged inside the weighing platform 37 obtains the gravity information of the camera 1, the gravity information is transmitted to the damping controller 381 arranged in the base 38. The damping controller 381 performs damping compensation on the electronic damper 331 according to the gravity information, so that the shock absorbing capacity of the electronic damper 331 is the same as that of the first spring damper and the second spring damper. S2, after the horizontal height of the camera support plate 4 remains unchanged, adjust the first spring damper and the second spring damper to make the horizontal height of the first limit plate 313 consistent with the height of the camera support plate 4, rotate the end of the clamping plate 316 to the inner side of the flange of the T-shaped plate 34 through the rotating shaft 315, and then tighten the first fixing nut 36 to make the first fixing nut 36 squeeze the clamping plate 316, fix the clamping plate 316 and the T-shaped plate 34, and the first limit plate 313 is embedded in the second limit groove 42; S3. After all devices in the protective housing 2 are installed, the second fixing plate 51 is connected to the protective housing 2 through the second fixing nut 52, and the third fixing plate 53 is connected to the external tunnel wall through the third fixing nut 54 to complete the installation.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A machine vision equipment protection device during tunnel construction, characterized in that: The invention comprises a protective shell (2) for isolating dust, water vapor and blasting flying rocks inside a tunnel, a shock absorbing device (3) for buffering vibrations of a machine vision device used for monitoring structural deformation during tunnel construction, and a camera support plate (4) and a device support bracket (5) for supporting the machine vision device used for monitoring structural deformation during tunnel construction. The protective shell (2) is arranged on the device support bracket (5), the device support bracket (5) is connected to the inner wall of the tunnel, the camera support plate (4) and the shock absorbing device (3) are both arranged inside the protective shell (2), and the camera support plate (4) is connected to the inner wall of the protective shell (2) via the shock absorbing device (3).

2. A machine vision equipment protection device for tunnel construction according to claim 1, characterized in that: The protective shell (2) comprises a dustproof glass (24), two dust filters (21), two heat dissipation holes (22) and two moisture-proof layers (23); an opening is provided on the front side of the protective shell (2); the dustproof glass (24) is arranged at the opening; the two heat dissipation holes (22) are symmetrically provided on two opposite sides of the protective shell (2); the two dust filters (21) are respectively arranged in the corresponding two heat dissipation holes (22); the two moisture-proof layers (23) are respectively symmetrically provided inside the protective shell (2), and each moisture-proof layer (23) is located opposite to the corresponding two heat dissipation holes (22).

3. The machine vision equipment protection device for tunnel construction period according to claim 1 is characterized in that: A first limiting groove (41) and a third limiting groove (43) are respectively provided on the upper surface and the lower surface of the camera support plate (4); the first limiting groove (41) is used to place the camera (1); a plurality of second limiting grooves (42) are respectively provided on the left side, the right side and the rear side of the camera support plate (4); and a buffer layer (44) is provided inside the first limiting groove (41) and the third limiting groove (43).

4. A machine vision equipment protection device for tunnel construction period according to claim 3, characterized in that: The shock absorbing device (3) comprises a second shock absorbing mechanism (32), a third shock absorbing mechanism (33) and two first shock absorbing mechanisms (31), the two first shock absorbing mechanisms (31) being symmetrically arranged on the left and right sides of the camera support plate (4), respectively, and one end of each of the first shock absorbing mechanisms (31) is connected to the corresponding second limiting groove (42), and the other end is connected to the inner wall of the protective housing (2); One end of the second shock absorbing mechanism (32) is connected to the second limiting groove (42) on the rear side of the camera support plate (4), and the other end is connected to the inner wall of the rear side of the protective shell (2); one end of the third shock absorbing mechanism (33) is connected to the bottom of the camera support plate (4), and the other end is connected to the inner wall of the bottom of the protective shell (2); The first shock absorbing mechanism (31) and the second shock absorbing mechanism (32) have the same structure.

5. The machine vision equipment protection device for tunnel construction period according to claim 4 is characterized in that: The first shock absorbing mechanism (31) comprises a plurality of shock absorbing units arranged in parallel and at intervals, one end of each shock absorbing unit being connected to a corresponding second limiting groove (42) and the other end being connected to an inner wall of the protective housing (2); Each shock absorbing unit comprises a first spring damper, an adjustment mechanism and a T-shaped plate (34); one end of the first spring damper is connected to the second limiting groove (42), and the other end is connected to the adjustment mechanism; the adjustment mechanism is connected to the inner wall of the protective housing (2) via the T-shaped plate (34).

6. A machine vision equipment protection device for tunnel construction according to claim 5, characterized in that: The first spring damper comprises a return spring (311), a damper (312) and a first limit plate (313); the return spring (311) is arranged on the damper (312), one end of the return spring is connected to the damper, and the other end is connected to the first limit plate (313); the first limit plate (313) is inserted and arranged inside the second limit groove (42); and one end of the damper (312) away from the first limit plate (313) is connected to the adjustment mechanism.

7. The machine vision equipment protection device for tunnel construction period according to claim 5 is characterized in that: The adjustment mechanism comprises a clamping plate, two rotating shafts (315), two first fixing plates (35) and two first fixing nuts (36); the clamping plate comprises a sliding plate (314) of a U-shaped structure and two clamping plates (316); one end of the sliding plate (314) is connected to the first spring damper, and the other end is slidably connected to the flange end of the T-shaped plate (34); The two clamping plates (316) are symmetrically arranged on the side surfaces of the flange ends of the T-shaped plate (34) close to the inner wall of the protective shell (2), and the two clamping plates (316) are rotatably connected to the two ends of the sliding plate (314) through the rotating shaft (315). The two first fixing plates (35) are vertically symmetrically arranged on the opposite side surfaces of the web of the T-shaped plate (34), and the first fixing plate (35) and the clamping plate (316) on the same side are fixed by a first fixing nut (36).

8. The machine vision equipment protection device for tunnel construction period according to claim 4 is characterized in that: The third damping mechanism (33) comprises a weighing platform (37), a base (38), a plurality of second limiting plates (332), a plurality of fourth limiting grooves (372), a plurality of restoring springs (333) and a plurality of electronic dampers (331); the weighing platform (37) is arranged inside the third limiting groove (43); the plurality of fourth limiting grooves (372) are respectively opened at the bottom of the weighing platform (37); the plurality of second limiting plates (332) are respectively embedded in the corresponding plurality of fourth limiting grooves (372); and the base (38) is embedded in the bottom inner wall of the protective housing (2); The plurality of electronic dampers (331) are arranged between the plurality of second limit plates (332) and the base (38), the bottom end of each electronic damper (331) is connected to the base (38), the plurality of restoring springs (333) are respectively arranged on the corresponding plurality of electronic dampers (331), and one end of each restoring spring (333) is connected to the corresponding electronic damper (331), and the other end is connected to the corresponding second limit plate (332) above the restoring spring (333), a gravity sensor is arranged inside the weighing platform (37), a damping controller (381) is arranged on the base (38), and the gravity sensor and the plurality of electronic dampers (331) are electrically connected to the damping controller (381).

9. The machine vision equipment protection device for tunnel construction period according to claim 1 is characterized in that: The device bracket (5) comprises a second fixing plate (51), a second fixing nut (52), a third fixing plate (53), a third fixing nut (54) and an inclined rod (55), and the second fixing plate (51) and the third fixing plate (53) are vertically connected; The second fixing plate (51) is arranged at the bottom of the protective housing (2), and the second fixing plate (51) is connected to the protective housing (2) via a second fixing nut (52), the third fixing plate (53) is connected to the external tunnel wall via a third fixing nut (54), the inclined rod (55) is arranged between the second fixing plate (51) and the third fixing plate (53), and both ends of the inclined rod (55) are respectively connected to the second fixing plate (51) and the third fixing plate (53).

10. A method for installing a machine vision equipment protection device during tunnel construction according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Before tunnel deformation monitoring is performed, a camera (1) is placed in a first limiting groove (41) of a camera support plate (4). After a gravity sensor disposed inside a weighing platform (37) obtains gravity information of the camera (1), the gravity information is transmitted to a damping controller (381) disposed inside a base (38). The damping controller (381) performs damping compensation on the electronic damper (331) according to the gravity information, so that the shock absorbing capacity of the electronic damper (331) is the same as that of the first spring damper and the second spring damper. S2, after the horizontal height of the camera support plate (4) remains unchanged, adjust the first spring damper and the second spring damper so that the horizontal height of the first limit plate (313) is consistent with the height of the camera support plate (4), rotate the end of the clamping plate (316) to the inner side of the flange of the T-shaped plate (34) through the rotating shaft (315), then tighten the first fixing nut (36) so that the first fixing nut (36) presses the clamping plate (316), fixes the clamping plate (316) and the T-shaped plate (34), and the first limit plate (313) is embedded in the second limit groove (42); S3. Connect the second fixing plate (51) to the protective housing (2) via the second fixing nut (52), and connect the third fixing plate (53) to the external tunnel wall via the third fixing nut (54), thereby completing the installation.

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