A tunnel construction monitoring device based on three-dimensional scanning

Abstract

The application relates to the technical field of tunnel construction safety monitoring, in particular to a tunnel construction monitoring device based on three-dimensional scanning, which comprises a mounting box provided with a drainage hole at the lower end and an observation window at one side; a mounting frame installed in the mounting box; a three-dimensional scanner installed on the mounting frame; a protective cover made of transparent material, which is arranged outside the three-dimensional scanner, rotationally connected with the mounting box, can rotate relative to the mounting frame and the mounting box, can seal the observation window, and divides the inner cavity of the mounting box into a clean cavity and a cleaning cavity; a driving assembly in transmission connection with the protective cover; a spray-washing assembly in linkage with the protective cover, which can spray water to the part of the protective cover located in the cleaning cavity; and a scrubbing assembly installed in the cleaning cavity and located at the back side of the spray-washing assembly, which can sequentially drive the spray-washing assembly to flush the protective cover and contact the scrubbing assembly during the rotation of the protective cover. The application can automatically clean the transparent protective cover on line and avoid suspending construction due to cleaning the three-dimensional scanner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction safety monitoring, and particularly relates to a tunnel construction monitoring device based on three-dimensional scanning. BACKGROUND

[0002] When a tunnel is excavated by using a mechanized construction method, real-time acquisition of image information of a working face and deformation data of a support structure is required. Three-dimensional laser scanning technology, as a stereoscopic and high-precision modern detection technology, can scan the spatial position of a tunnel structure by means of laser scanning, and can make the tunnel space point information obtained by detection form a specific image, so that the tunnel deformation condition and the tunnel structure disease condition can be more intuitively and comprehensively understood.

[0003] The existing three-dimensional scanner is usually directly installed on a tripod. However, the tunnel construction environment has the characteristics of high dust and high humidity, and the dust and water mist in the tunnel are easy to adhere to the lens of the scanning camera, thereby affecting the field of view of the three-dimensional scanner and failing to accurately and correctly acquire image data. Therefore, the scanning camera needs to be cleaned regularly.

[0004] However, the existing three-dimensional scanner does not have a self-cleaning function and needs to be cleaned manually. Manual cleaning not only has low cleaning efficiency, but also cannot work normally when cleaning, and needs to pause the construction (there is a high loss of stopping work), so that the cleaning operation cost exceeds half of the total operation and maintenance cost of the monitoring system. SUMMARY

[0005] In view of the technical problem that the existing tunnel construction monitoring device based on three-dimensional scanning needs to be cleaned during stopping work, the present application provides a tunnel construction monitoring device based on three-dimensional scanning, which can automatically clean the transparent protective cover online without affecting the work of the three-dimensional scanner, avoid pausing the construction due to cleaning the three-dimensional scanner, and thus reduce the cleaning labor intensity and cleaning cost of the monitoring device.

[0006] The present application is realized by the following technical scheme:

[0007] The application provides a tunnel construction monitoring device based on three-dimensional scanning, comprising: a mounting box, a drainage hole is arranged at the lower end of the mounting box, and an observation window is arranged on one side of the mounting box; a mounting frame is mounted in the mounting box; a three-dimensional scanner is mounted on the mounting frame; a protective cover is made of transparent material, covers the three-dimensional scanner, is rotationally connected with the mounting box, can rotate relative to the mounting frame and the mounting box along a preset axis, can seal the observation window, and divides the inner cavity of the mounting box into a clean cavity and a cleaning cavity from top to bottom; a driving assembly is transmissionally connected with the protective cover to drive the protective cover to rotate along the preset axis; a spray cleaning assembly is linked with the protective cover and can spray water to the part of the protective cover located in the cleaning cavity; a scrubbing assembly is mounted in the cleaning cavity, is located at the rear side of the spray cleaning assembly along the rotation direction of the protective cover, and can scrub the protective cover; wherein, the protective cover can sequentially drive the spray cleaning assembly to flush the protective cover and contact the scrubbing assembly during rotation.

[0008] The tunnel construction monitoring device based on three-dimensional scanning comprises a mounting box, a mounting frame, a three-dimensional scanner, a protective cover, a driving assembly, a spray cleaning assembly and a scrubbing assembly. The lower end of the mounting box is provided with a drainage hole to facilitate the drainage of water in the mounting box from the drainage hole. Meanwhile, the observation window is arranged on one side of the mounting box. The mounting frame is mounted in the mounting box, and the three-dimensional scanner is mounted on the mounting frame so as to be installed in the mounting box. The protective cover is made of transparent material and covers the three-dimensional scanner. While the protective cover protects the three-dimensional scanner from dust, water and the like, it can ensure the normal operation of the three-dimensional scanner. The protective cover is rotationally connected with the mounting box, can rotate relative to the mounting frame and the mounting box along a preset axis, can seal the observation window, and divides the inner cavity of the mounting box into a clean cavity and a cleaning cavity from top to bottom. Thus, the protective cover is only partially located outside the mounting box. Through the rotation of the protective cover, the part of the protective cover with dust and water mist attached thereto can be moved into the mounting box, and the clean part of the protective cover can be moved to the observation side. The driving assembly drives the protective cover to rotate. In addition, the spray cleaning assembly is linked with the protective cover and can spray water to the part of the protective cover located in the cleaning cavity. The scrubbing assembly is mounted in the cleaning cavity, is located at the rear side of the spray cleaning assembly, and can scrub the protective cover.

[0009] Thus, under normal conditions, the three-dimensional scanner scans through the part of the protective cover located outside the installation box. Since the protective cover seals the observation window and is installed in the installation box, the part of the protective cover located in the installation box is in a clean state when the monitoring device is initially put into use. As the monitoring device is used, the part of the protective cover exposed to the tunnel environment through the observation window is attached with more dust and water mist. At this time, the protective cover is driven to rotate by the driving assembly, so as to move the part of the protective cover attached with dust and water mist into the installation box and move the clean part of the protective cover into the observation window, thereby avoiding the pollution of the protective cover from affecting the normal work of the three-dimensional scanner and realizing the uninterrupted monitoring of the three-dimensional scanner. As the protective cover rotates, the spraying assembly is first driven to work, so as to spray clean water on the polluted part of the protective cover through the spraying assembly. The polluted water is then discharged through the drain hole. As the protective cover continues to rotate, the brush washing assembly is contacted, so as to brush the part of the protective cover after the spraying through the brush washing assembly, thereby automatically cleaning the transparent protective cover.

[0010] During the whole cleaning process, the polluted part of the protective cover is located in the cleaning cavity of the protective box and does not affect the part of the protective cover located in the clean cavity. The part of the protective cover moved into the observation window is all located in the clean cavity, thereby ensuring that the part of the protective cover located in the observation window is always clean during the cleaning process and does not affect the work of the three-dimensional scanner, so that the cleaning does not need to be stopped. As the protective cover continues to rotate, the part of the protective cover after the cleaning is completed is moved into the clean cavity for standby.

[0011] In summary, the monitoring device can automatically clean the transparent protective cover on line without affecting the work of the three-dimensional scanner, avoids the suspension of construction for cleaning the three-dimensional scanner, and thereby reduces the cleaning labor intensity and cleaning cost of the monitoring device.

[0012] In an optional embodiment of the present application, the two sides of the mounting frame are fixedly connected with the installation box through connecting shafts, and the two ends of the protective cover are respectively sleeved on the corresponding connecting shafts, so that the protective cover can rotate relative to the mounting frame and the three-dimensional scanner. The observation window is provided with a sealing strip, which is used to seal the gap between the protective cover and the observation window, so as to avoid the pollution of the pollutants in the tunnel to the part of the protective cover located in the clean cavity.

[0013] In an optional embodiment of the present application, one end of the protective cover is provided with a driven disc, and the driven disc is coaxially arranged with the connecting shaft. The driving assembly comprises a driving motor, and the output shaft of the driving motor is provided with a driving disc. The driving disc is in transmission connection with the driven disc, so as to realize the transmission connection between the driving assembly and the protective cover.

[0014] In an alternative embodiment of the present application, the protective cover is in a cylindrical structure, and an outer periphery of one end of the protective cover is provided with two linkage protrusions; the two linkage protrusions are symmetrical about an axis of the protective cover, and the linkage protrusions are concentrically arranged with the protective cover; during rotation of the protective cover, each of the linkage protrusions can sequentially trigger the spray cleaning assembly and the brush cleaning assembly to realize linkage between the protective cover and the spray cleaning assembly.

[0015] In an alternative embodiment of the present application, the spray cleaning assembly comprises: a water storage cylinder, which is in a closed hollow structure and is used for storing clean water; a plurality of water spray heads; a water spray pipe, one end of which is connected to the water spray head and the other end of which is inserted into a bottom of the water storage cylinder; a gas storage cylinder, which is used for storing compressed gas; and a first pressing valve, which is connected between a gas outlet end of the gas storage cylinder and an upper end of the water storage cylinder; in the case that the linkage protrusion extrudes the first pressing valve, the first pressing valve is opened, the clean water in the water storage cylinder is driven by the compressed gas in the gas storage cylinder to be sprayed out of the water spray head, thereby the corresponding part of the protective cover is sprayed and cleaned; compared with using a water pump, in addition to rotation of the protective cover, there is no other moving part, which can avoid that the three-dimensional scanner is shaken due to operation of the water pump, thereby affecting image data acquisition, and further ensure stability of the three-dimensional scanner and accuracy of data acquisition.

[0016] In an alternative embodiment of the present application, the first pressing valve comprises: a first valve body, which is provided with a first gas guide channel; a first valve core, one end of which is slidably inserted into the first valve body and is provided with a gas guide hole, and the other end of which is installed with a first roller, the first roller being located on a moving path of the linkage protrusion; and a first spring, which is installed in the first valve body and is used for driving the first valve core to reset; in the case that the linkage protrusion is pressed on the first roller, the first valve core can extrude the first spring to connect the first gas guide channel through the gas guide hole, thereby realizing linkage between the first pressing valve and the protective cover.

[0017] In an alternative embodiment of the present application, a blowing assembly is further included, the blowing assembly is located at a rear side of the brush cleaning assembly along a rotation direction of the protective cover, the blowing assembly can spray clean gas to a part of the protective cover located in the cleaning cavity, and linkage with the protective cover, so that dust and water droplets attached to a surface of the protective cover are blown away by the blowing assembly after the brush cleaning assembly brushes the protective cover, thereby avoiding that water stains are left on the surface of the protective cover after the water droplets are naturally dried, and further ensuring a cleaning effect of the protective cover.

[0018] In an alternative embodiment of the present application, the blowing assembly comprises a jet pipe provided with a jet slot opposite to the protective cover; a second pressing valve connected between the gas outlet end of the gas cylinder and the jet pipe; when the linkage protrusion presses the second pressing valve, the second pressing valve is opened to realize linkage between the protective cover and the blowing assembly.

[0019] In an alternative embodiment of the present application, the second pressing valve comprises a second valve body provided with a second air guide channel; a second valve core slidably inserted into the second valve body and provided with a pressure reducing hole, the other end of the second valve core is installed with a second roller, the second roller is located on the moving path of the linkage protrusion; a second spring installed in the second valve body for driving the second valve core to reset; when the linkage protrusion presses the second roller, the second valve core can extrude the second spring to connect the second air guide channel through the pressure reducing hole to realize linkage between the second pressing valve and the protective cover.

[0020] In an alternative embodiment of the present application, a support frame is further included, the mounting box is installed at the upper end of the support frame to facilitate installation of the mounting box at the corresponding detection station through the support frame, and the water storage cylinder and the gas cylinder are installed at the lower end of the support frame.

[0021] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0022] The tunnel construction monitoring device based on three-dimensional scanning provided by the application, the monitoring device, comprises a mounting box, a mounting frame, a three-dimensional scanner, a protective cover, a driving assembly, a spray cleaning assembly and a brush cleaning assembly, a drainage hole is arranged at the lower end of the mounting box, so that water in the mounting box is discharged from the drainage hole, meanwhile, an observation window is arranged on one side of the mounting box, the mounting frame is mounted in the mounting box, the three-dimensional scanner is mounted on the mounting frame, so that the three-dimensional scanner is mounted in the mounting box, the protective cover is made of transparent material and covers the three-dimensional scanner, while the three-dimensional scanner is protected from dust and water by the protective cover, the protective cover is rotatably connected with the mounting box, can rotate relative to the mounting frame and the mounting box along a preset axis, can seal the observation window, and divides the inner cavity of the mounting box into a clean cavity and a cleaning cavity from top to bottom, so that the protective cover is only partially outside the mounting box, by rotating the protective cover, the part of the protective cover with dust and water mist is moved into the mounting box, and the clean part of the protective cover is moved to the observation side, the driving assembly drives the protective cover to rotate, in addition, the spray cleaning assembly is linked with the protective cover and can spray water to the part of the protective cover in the cleaning cavity, the brush cleaning assembly is mounted in the cleaning cavity and located at the rear side of the spray cleaning assembly and can brush the protective cover, so that the transparent protective cover is automatically cleaned online without affecting the work of the three-dimensional scanner, avoiding suspending construction due to cleaning the three-dimensional scanner, thereby reducing the cleaning labor intensity and cleaning cost of the monitoring device. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0024] In the drawings:

[0025] Figure 1 The structural schematic diagram of the tunnel construction monitoring device based on three-dimensional scanning provided by the embodiment of the application is shown;

[0026] Figure 2 The transverse sectional structural schematic diagram of the mounting box of the tunnel construction monitoring device based on three-dimensional scanning provided by the embodiment of the application after assembly is shown;

[0027] Figure 3 The pipeline principle diagram of the tunnel construction monitoring device based on three-dimensional scanning provided by the embodiment of the application is shown;

[0028] Figure 4 The structural schematic diagram of the first pressing valve provided by the embodiment of the application is shown;

[0029] Figure 5 A part enlarged structural schematic view of the embodiment of the present application Figure 2 A part enlarged structural schematic view of the embodiment of the present application

[0030] Figure 6 A part enlarged structural schematic view of the embodiment of the present application

[0031] Corresponding component names of the reference signs in the drawings:

[0032] 10 - mounting box, 11 - drain hole, 12 - observation window, 13 - sealing strip, 14 - clean cavity, 15 - cleaning cavity, 16 - sponge roller;

[0033] 20 - mounting frame, 21 - connecting shaft;

[0034] 30 - three-dimensional scanner;

[0035] 40 - protective cover, 41 - driven disc, 42 - linkage protrusion;

[0036] 50 - driving assembly, 51 - driving motor, 52 - driving disc;

[0037] 60 - spray washing assembly, 61 - water storage cylinder, 62 - water spraying head, 63 - water spraying pipe, 64 - gas storage cylinder, 65 - first pressing valve, 65a - first valve body, 65b - first air guide channel, 65c - first valve core, 65d - air guide hole, 65e - first roller, 65f - first spring;

[0038] 70 - brushing assembly;

[0039] 80 - blowing assembly, 81 - air jet pipe, 81a - air jet strip gap, 82 - second pressing valve, 82a - second valve body, 82b - second air guide channel, 82c - second valve core, 82d - pressure reduction hole, 82e - second roller, 82f - second spring;

[0040] 90 - support frame. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] The following detailed description of embodiments of the application in the drawings provided by the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0043] It should be noted that similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0044] In the description of the embodiments of the application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, only for the convenience of describing the application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0045] In the description of the application, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0046] Embodiments

[0047] In combination Figure 1 And Figure 2The embodiment provides a tunnel construction monitoring device based on three-dimensional scanning, which comprises: a mounting box 10, which is provided with a drainage hole 11 at the lower end and an observation window 12 at one side; a mounting frame 20, which is installed in the mounting box 10; a three-dimensional scanner 30, which is installed on the mounting frame 20; a protective cover 40, which is made of transparent material, covers the three-dimensional scanner 30, is rotationally connected with the mounting box 10, can rotate relative to the mounting frame 20 and the mounting box 10 along a preset axis, can seal the observation window 12, and divides the inner cavity of the mounting box 10 into a clean cavity 14 and a cleaning cavity 15 from top to bottom; a driving assembly 50, which is in transmission connection with the protective cover 40 and drives the protective cover 40 to rotate along the preset axis; a spray cleaning assembly 60, which is linked with the protective cover 40 and can spray water to the part of the protective cover 40 located in the cleaning cavity 15; and a scrubbing assembly 70, which is installed in the cleaning cavity 15, is located at the rear side of the spray cleaning assembly 60 along the rotation direction of the protective cover 40, and can scrub the protective cover 40; wherein the protective cover 40 can sequentially drive the spray cleaning assembly 60 to flush the protective cover 40 and contact the scrubbing assembly 70 during rotation.

[0048] The size of the protective cover 40 and the size of the observation window 12 should ensure that the three-dimensional scanner 30 is installed on the mounting frame 20, the protective cover 40 covers the three-dimensional scanner 30, and the corresponding data acquisition work can be performed, and the three-dimensional scanner 30 should not interfere with the rotation of the protective cover 40.

[0049] Specifically, the mounting frame 20 is fixedly connected with the mounting box 10 through connecting shafts 21 at both sides, and the positions of the connecting shafts 21 should be as close to the middle of the height direction of the three-dimensional scanner 30 as possible, so that the volume of the protective cover 40 and the mounting box 10 is minimized. The protective cover 40 is sleeved on the corresponding connecting shaft 21 at both ends, so that the protective cover 40 can rotate relative to the mounting frame 20 and the three-dimensional scanner 30; the observation window 12 is provided with a sealing strip 13, which is used to seal the gap between the protective cover 40 and the observation window 12, so as to avoid that the pollutants in the tunnel pollute the part of the protective cover 40 located in the clean cavity 14. Meanwhile, a sponge roller 16 is installed in the side wall of the mounting box 10 opposite to the observation window 12, one side of the sponge roller 16 abuts against the protective cover 40, one side abuts against the corresponding side wall of the mounting box 10, and both ends abut against the protective cover 40, so as to avoid that dirt enters the clean cavity 14 when the spray cleaning assembly 60 and the scrubbing assembly 70 are working.

[0050] Continue to combine Figure 1 And Figure 2The end of the protective cover 40 is provided with a driven disc 41 coaxially arranged with the connecting shaft 21; the driving assembly 50 comprises a driving motor 51 (generally a step motor), and the output shaft of the driving motor 51 is provided with a driving disc 52, which is in transmission connection with the driven disc 41, so as to realize the transmission connection between the driving assembly 50 and the protective cover 40. As for the transmission connection mode between the driving disc 52 and the driven disc 41, it is determined according to the specific structural features, which can be gear transmission, belt transmission and chain wheel transmission, etc. If the driving disc 52 and the driven disc 41 are synchronous wheels, the driving disc 52 and the driven disc 41 are in transmission connection through a synchronous belt.

[0051] In the embodiment, the protective cover 40 is in a cylindrical structure, and the outer periphery of one end of the protective cover 40 is provided with two linkage protrusions 42; the two linkage protrusions 42 are symmetrical about the axis of the protective cover 40, and the linkage protrusions 42 are concentrically arranged with the protective cover 40, so as to ensure that one half of the protective cover 40 is in cleaning state and the other half is in clean state. In the process of rotation of the protective cover 40, each linkage protrusion 42 can trigger the spray cleaning assembly 60 and the brushing assembly 70 in sequence, so as to realize the linkage between the protective cover 40 and the spray cleaning assembly 60.

[0052] In combination with Figure 3 The spray cleaning assembly 60 comprises a water storage cylinder 61 in a closed hollow structure, used for storing clean water; a plurality of water spraying heads 62; a water spraying pipe 63, one end of which is connected with the water spraying head 62, and the other end of which is inserted into the bottom of the water storage cylinder 61; a gas storage cylinder 64, used for storing compressed gas; and a first pressing valve 65, connected between the gas outlet end of the gas storage cylinder 64 and the upper end of the water storage cylinder 61. In the case that the linkage protrusion 42 extrudes the first pressing valve 65, the first pressing valve 65 is opened, and the clean water in the water storage cylinder 61 is driven by the compressed gas in the gas storage cylinder 64 to be sprayed out from the water spraying head 62, so as to spray and clean the corresponding part of the protective cover 40.

[0053] Compared with the water pump, there is no other moving part except the rotation of the protective cover 40, which can avoid the influence of the image data collection caused by the shaking of the three-dimensional scanner 30 due to the operation of the water pump, and further ensure the stability of the three-dimensional scanner 30 and the accuracy of the data collection. In the working process, no additional electric energy is consumed, and only the water storage cylinder 61 and the gas storage cylinder 64 need to be replaced, or the water storage cylinder 61 needs to be filled with water and the gas storage cylinder 64 needs to be filled with compressed gas.

[0054] In combination with Figure 4The first pressing valve 65 comprises a first valve body 65a provided with a first air guide channel 65b, a first valve core 65c slidably inserted into the first valve body 65a and provided with an air guide hole 65d, a first roller 65e mounted at one end of the first valve core 65c and located on the moving path of the linkage protrusion 42, and a first spring 65f mounted in the first valve body 65a and used to drive the first valve core 65c to reset. When the linkage protrusion 42 presses against the first roller 65e, the first valve core 65c can be driven to press the first spring 65f to connect the first air guide channel 65b through the air guide hole 65d, thereby realizing linkage between the first pressing valve 65 and the protective cover 40.

[0055] On this basis, the present embodiment further comprises a blowing assembly 80 located at the rear side of the brushing assembly 70 along the rotating direction of the protective cover 40. The blowing assembly 80 can spray cleaning gas to the part of the protective cover 40 located in the cleaning cavity 15 and link with the protective cover 40 to blow off dust and water droplets attached to the surface of the protective cover 40 after the brushing assembly 70 brushes the protective cover 40, so as to avoid water stains left on the surface of the protective cover 40 after the water droplets naturally dry, thereby ensuring the cleaning effect of the protective cover 40.

[0056] In combination with Figure 5 The blowing assembly 80 comprises a gas jet pipe 81 provided with a gas jet strip seam 81a opposite to the protective cover 40 at one side, and a second pressing valve 82 connected between the gas outlet end of the gas cylinder 64 and the gas jet pipe 81. When the linkage protrusion 42 presses against the second pressing valve 82, the second pressing valve 82 is opened to realize linkage between the protective cover 40 and the blowing assembly 80.

[0057] Similarly, compared with the air pump, no other moving parts are used except for the rotation of the protective cover 40, so that the influence of the shaking of the three-dimensional scanner 30 caused by the operation of the air pump on the collection of image data can be avoided, thereby ensuring the stability of the work of the three-dimensional scanner 30 and the accuracy of data collection. In addition, no extra electric energy is consumed during the work, and only the gas cylinder 64 needs to be replaced or refilled with compressed gas.

[0058] In combination with Figure 6The second pressing valve 82 comprises a second valve body 82a provided with a second air guide channel 82b, a second valve core 82c slidably inserted into the second valve body 82a at one end and provided with a pressure reducing hole 82d, a second roller 82e mounted at the other end of the second valve core 82c, the second roller 82e being located on the moving path of the linkage protrusion 42, and a second spring 82f mounted in the second valve body 82a for driving the second valve core 82c to reset. When the linkage protrusion 42 presses against the second roller 82e, the second valve core 82c can be driven to press the second spring 82f to communicate the second air guide channel 82b through the pressure reducing hole 82d, so as to realize linkage between the second pressing valve 82 and the protective cover 40.

[0059] It should be noted that the blowing assembly 80 is used to blow away dust and water droplets attached to the protective cover 40, and the dust on the protective cover 40 has been washed and brushed, so the adhesion is small, and thus the air pressure required for blowing is low. In the embodiment, the pressure reducing hole 82d is arranged on the second valve core 82c, so that the gas cylinder 64 can output gas at a set pressure from the air jet pipe 81, thereby saving compressed gas.

[0060] It can be understood that the embodiment further comprises a support frame 90, the mounting box 10 is mounted at the upper end of the support frame 90, so as to facilitate mounting the mounting box 10 at a corresponding detection station through the support frame 90, and the water storage cylinder 61 and the gas cylinder 64 are mounted at the lower end of the support frame 90, so that the water storage cylinder 61 and the gas cylinder 64 can function as counterweights, thereby improving the stability of the support frame 90.

[0061] In summary, the embodiment includes the installation box 10, the mounting frame 20, the three-dimensional scanner 30, the protective cover 40, the driving assembly 50, the spray cleaning assembly 60, the brushing assembly 70, the blowing assembly 80 and the support frame 90. The lower end of the installation box 10 is provided with the drain hole 11, so as to facilitate the water in the installation box 10 to be drained from the drain hole 11; one side of the installation box 10 is provided with the observation window 12, the mounting frame 20 is installed in the installation box 10, and the three-dimensional scanner 30 is installed on the mounting frame 20, so that the three-dimensional scanner 30 is installed in the installation box 10; the protective cover 40 is made of transparent material and covers the three-dimensional scanner 30, which can ensure the normal work of the three-dimensional scanner 30 while protecting the three-dimensional scanner 30 from dust and water, and the protective cover 40 is rotatably connected with the installation box 10, can rotate relative to the mounting frame 20 and the installation box 10 along the preset axis, can seal the observation window 12, and divides the inner cavity of the installation box 10 from top to bottom into the clean cavity 14 and the cleaning cavity 15, so that the protective cover 40 is only partially outside the installation box 10, through the rotation of the protective cover 40, the part of the protective cover 40 attached with dust and water mist can be moved into the installation box 10, and the clean part of the protective cover 40 can be moved to the observation side, the driving assembly 50 drives the protective cover 40 to rotate, in addition, the spray cleaning assembly 60 is linked with the protective cover 40 and can spray water to the part of the protective cover 40 located in the cleaning cavity 15, the brushing assembly 70 is installed in the cleaning cavity 15 and located at the rear side of the spray cleaning assembly 60, and can brush the protective cover 40.

[0062] In use, the installation box 10 is erected on the monitoring station through the support frame 90, so that the observation window 12 faces the monitoring surface. In normal working condition, the three-dimensional scanner 30 scans through the part of the protective cover 40 located outside the installation box 10, and since the protective cover 40 seals the observation window 12 and is installed in the installation box 10, the part of the protective cover 40 located in the installation box 10 is in a clean state when the monitoring device is initially put into use.

[0063] With the use of the monitoring device, the part of the protective cover 40 exposed to the tunnel environment through the observation window 12 is attached with more dust and water mist, etc. At this time, the driving assembly 50 is driven to rotate the protective cover 40, and the part of the protective cover 40 attached with dust and water mist is moved into the installation box 10, and the clean part of the protective cover 40 is moved into the observation window, so as to avoid the pollution of the protective cover 40 from affecting the normal work of the three-dimensional scanner 30, and to realize the uninterrupted monitoring of the three-dimensional scanner 30. With the rotation of the protective cover 40, the linkage protrusion 42 first presses against the first roller 65e, thereby extruding the first valve core 65c to open the first air guide channel 65b, so that the compressed gas in the gas storage tank enters the water storage tank to spray clean water to wash the contaminated part of the protective cover 40, and the sewage after cleaning is discharged through the drain hole 11; with the continuous rotation of the protective cover 40 to contact the brushing assembly 70, the part of the protective cover 40 after the spray washing is brushed by the brushing assembly 70.

[0064] When the linkage protrusion 42 presses against the second roller 82e, the linkage protrusion 42 extrudes the second valve core 82c to open the second air guide channel 82b, so that the compressed gas in the gas storage tank is output from the air jet gap of the air jet pipe 81 to blow the brushed protective cover 40, thereby automatically cleaning the transparent protective cover. After the linkage protrusion 42 leaves the first roller 65e, the first spring 65f drives the first valve core 65c to reset to close the first pressing valve 65, so that the water spraying head 62 stops spraying water; after the linkage protrusion 42 leaves the second roller 82e, the second spring 82f drives the second valve core 82c to reset to close the second pressing valve 82, so that the air jet pipe 81 stops spraying air, and the protective cover 40 stops rotating, to complete a self-cleaning process.

[0065] For the action of the driving assembly 50, a timing control program can be set to act at a set time interval, and the rotation speed of the protective cover 40 in the corresponding area and the total rotation angle are controlled each time, so that the spray washing assembly 60, the brushing assembly 70 and the blowing assembly 80 can fully clean the protective cover 40 at a time.

[0066] During the entire cleaning process, the contaminated part of the protective cover 40 is located in the cleaning cavity 15 of the protective box, and does not affect the part of the protective cover 40 located in the clean cavity 14. The part of the protective cover 40 moved into the observation window 12 is located in the clean cavity 14, so as to ensure that the part of the protective cover 40 located in the observation window 12 is always clean during the cleaning process, and does not affect the work of the three-dimensional scanner 30, and does not need to stop working for cleaning. With the continuous rotation of the protective cover 40, the part of the protective cover 40 after cleaning is moved into the clean cavity 14 for standby, so as to provide clean protection for the three-dimensional scanner 30 in the next cleaning process.

[0067] To sum up, the embodiment can automatically clean the transparent cover online without affecting the operation of the three-dimensional scanner 30, avoiding the suspension of construction due to cleaning the three-dimensional scanner 30, thereby reducing the cleaning labor intensity and cleaning cost of the monitoring device.

[0068] The above detailed description of the specific embodiments has further detailed the purposes, technical solutions and beneficial effects of the present application. It should be understood that the above detailed description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tunnel construction monitoring device based on three-dimensional scanning, characterized by, The utility model relates to a kind of three-dimensional scanner cleaning device, including: Mounting box (10), lower end is provided with drain hole (11), one side is provided with observation window (12); Mounting bracket (20) is installed in the mounting box (10); Three-dimensional scanner (30) is installed on the mounting bracket (20); Protective cover (40) is transparent material, cover is set in the three-dimensional scanner (30) outside, with the mounting box (10) rotation connection, can be relative to the mounting bracket (20) and the mounting box (10) along preset axis rotation, and can seal the observation window (12), and the inner cavity of the mounting box (10) is divided into clean cavity (14) and washing cavity (15) from top to bottom; Drive assembly (50) is connected with the protective cover (40) transmission, to drive the protective cover (40) rotation along preset axis; Spray cleaning assembly (60) is linked with the protective cover (40), can spray water to the part of the protective cover (40) in the washing cavity (15); Brushing assembly (70) is installed in the washing cavity (15), in the rotation direction of the protective cover (40), it is located in the rear side of the spray cleaning assembly (60), can brush the protective cover (40); Wherein, in the process of the protective cover (40) rotation, can successively drive the spray cleaning assembly (60) flush the protective cover (40), contact the brushing assembly (70); The protective cover (40) is cylindrical structure, one end of the protective cover (40) is provided with two linkage protrusions (42), two linkage protrusions (42) are symmetrical about the axis of the protective cover (40), the linkage protrusion (42) is concentrically arranged with the protective cover (40), in the process of the protective cover (40) rotation, each linkage protrusion (42) can successively trigger the spray cleaning assembly (60) and the brushing assembly (70); The spray cleaning assembly (60) includes: Water storage cylinder (61) is airtight hollow structure, for storing clean water; Spray head (62) is provided with multiple; Spray pipe (63) is connected with the spray head (62) at one end, and the other end is inserted in the bottom of the water storage cylinder (61); Air cylinder (64) is used for storing compressed gas; First pressing valve (65) is connected between the air outlet end of the air cylinder (64) and the upper end of the water storage cylinder (61); In the case where the linkage protrusion (42) extrudes the first pressing valve (65), the first pressing valve (65) is opened.

2. The three-dimensional scan based tunnel construction monitoring device according to claim 1, characterized in that The mounting bracket (20) is fixedly connected with the mounting box (10) through connecting shaft (21) on both sides, and the protective cover (40) is sleeved on the corresponding connecting shaft (21) at both ends respectively; The observation window (12) is fitted with sealing strip (13), and the sealing strip (13) is used to seal the gap between the protective cover (40) and the observation window (12).

3. The three-dimensional scan based tunnel construction monitoring device according to claim 2, characterized in that One end of the protective cover (40) is provided with driven disc (41), and the driven disc (41) is coaxially arranged with the connecting shaft (21); The driving assembly (50) comprises a driving motor (51), an output shaft of the driving motor (51) is provided with a driving disc (52), and the driving disc (52) is in transmission connection with the driven disc (41).

4. The three-dimensional scan based tunnel construction monitoring device of claim 1, wherein, The first pressing valve (65) comprises: a first valve body (65a) provided with a first air guide channel (65b); a first valve core (65c) slidably inserted into the first valve body (65a) and provided with an air guide hole (65d), and provided with a first roller (65e) at the other end, the first roller (65e) being located on the moving path of the linkage protrusion (42); a first spring (65f) installed in the first valve body (65a) and used for driving the first valve core (65c) to reset; In the case that the linkage protrusion (42) presses against the first roller (65e), the first valve core (65c) can be driven to press the first spring (65f) to communicate the first air guide channel (65b) through the air guide hole (65d).

5. The three-dimensional scan based tunnel construction monitoring device of claim 1, wherein, Further comprising a blowing assembly (80) installed in the cleaning cavity (15); In the rotating direction of the protective cover (40), the blowing assembly (80) is located at the rear side of the brushing assembly (70), The blowing assembly (80) can spray cleaning gas to the part of the protective cover (40) located in the cleaning cavity (15) and is linked with the protective cover (40).

6. The three-dimensional scan based tunnel construction monitoring device according to claim 5, characterized in that The blowing assembly (80) comprises: an air jet pipe (81) provided with an air jet slot (81a) on one side, the air jet slot (81a) being opposite to the protective cover (40); a second pressing valve (82) connected between the air outlet end of the gas cylinder (64) and the air jet pipe (81); In the case that the linkage protrusion (42) presses against the second pressing valve (82), the second pressing valve (82) is opened.

7. The three-dimensional scan based tunnel construction monitoring device according to claim 6, characterized in that The second pressing valve (82) comprises: a second valve body (82a) provided with a second air guide channel (82b); a second valve core (82c) slidably inserted into the second valve body (82a) and provided with a pressure relief hole (82d), and provided with a second roller (82e) at the other end, the second roller (82e) being located on the moving path of the linkage protrusion (42); a second spring (82f) installed in the second valve body (82a) and used for driving the second valve core (82c) to reset; In the case that the linkage protrusion (42) presses against the second roller (82e), the second valve core (82c) can be driven to press the second spring (82f) to communicate the second air guide channel (82b) through the pressure relief hole (82d).

8. The three-dimensional scanning based tunnel construction monitoring device according to any one of claims 5 to 7, characterized in that Further comprising a support frame (90), the installation box (10) is installed at the upper end of the support frame (90), and the water storage cylinder (61) and the gas cylinder (64) are installed at the lower end of the support frame (90).

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