Crack monitoring device for large-span concrete structure in special function place

Abstract

A large-span concrete structure crack monitoring device for a special function place relates to the technical field of crack detection, and comprises a mounting box, a plurality of groups of flight assemblies are mounted on the mounting box, a double-shaft driving motor is arranged in the mounting box, the double-shaft driving motor is fixedly connected with a mounting rack, supporting legs are arranged on the mounting rack, and the flight assemblies are arranged on the mounting rack. Supporting legs are fixedly connected to the mounting frame, abutting rods are arranged at the bottoms of the supporting legs, a bearing frame is fixedly connected to the mounting frame, a translation mechanism is arranged at the bottom of the bearing frame, a crack width gauge is fixedly connected to the top of the bearing frame, and a camera shooting microscopic probe of the crack width gauge is fixedly connected to the translation mechanism. The states of the supporting legs are adjusted through the double-shaft driving motor, flexible storage and unfolding of the flight assembly are achieved in combination with the machine arm adjusting mechanism, precise matching of the translation mechanism and the telescopic rod set is achieved, the camera shooting microscopic probe can accurately abut against a crack of a high-rise vertical wall, and high-precision crack width measurement and recording are carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of crack detection, and in particular, to a crack monitoring device for large-span concrete structures in special functional places. Background Art

[0002] In special functional places such as hospitals, due to the large flow of people, dense equipment, and the presence of medical equipment that generates high-intensity electromagnetic radiation, such as X-ray machines, CT machines, linear accelerators, etc., the radiation released by these devices during treatment poses a potential threat to the human body and the environment. When cracks appear in the concrete wall, this radiation may overflow through the cracks, posing a serious threat to the surrounding environment and the safety of personnel. In addition, long-term exposure to a high-intensity radiation environment may also cause gene mutations and affect people's health.

[0003] In view of the particularity of medical buildings and their strict requirements for the safety of building structures, the monitoring and management of cracks are particularly important. In practical applications, the width of the crack is a key factor in measuring its impact on structural safety. Generally, cracks with a width less than 0.3 mm have little impact on structural safety; cracks with a width between 0.3 mm and 1.0 mm need to be closely monitored; once the crack width exceeds 1.0 mm, measures must be taken immediately to prevent the expansion of structural safety risks.

[0004] Currently, although some crack detection technologies have been applied to practical engineering, such as the concrete crack detection device based on drones disclosed in Chinese Patent CN110145989A, this device is mainly applicable to the case where the crack is located at the top of the structure, and the scale accuracy of its measuring ruler is limited. Even with the help of a camera, it is difficult to accurately distinguish the crack width, such as the crack widths of 0.8 mm and 1.2 mm, and the resolution effect of the measurement results is not good. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems raised in the above background art, and then propose a crack monitoring device for large-span concrete structures in special functional places.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] A crack monitoring device for a large-span concrete structure in a special functional place, comprising an installation box, on which a plurality of flight components are installed. A biaxial drive motor is arranged inside the installation box, and the output shaft of the biaxial drive motor is connected to a rotating shaft. An installation frame is fixedly connected to the outside of the rotating shaft. Legs are arranged on the installation frame, and a abutting rod is arranged at the bottom of the legs. A supporting bracket is fixedly connected to the installation frame. A translation mechanism is arranged at the bottom of the supporting bracket. A crack width measuring instrument is fixedly connected to the top of the supporting bracket, and the camera microscopic probe of the crack width measuring instrument is fixedly connected to the translation mechanism.

[0008] Further, a rubber anti-slip cushion layer is arranged at the bottom of the abutting rod.

[0009] Further, the translation mechanism comprises a translation bottom plate fixedly connected to the bottom of the supporting bracket. Two first sliding grooves are arranged on the translation bottom plate. A first sliding plate is slidably matched in the first sliding grooves. A first linear direct drive motor is installed on the translation bottom plate and is connected to the first sliding plate. The first linear direct drive motor can drive the first sliding plate to move along the first sliding grooves. Two second sliding grooves are arranged on the first sliding plate. A second sliding plate is slidably matched in the second sliding grooves. A second linear direct drive motor is installed on the first sliding plate and is connected to the second sliding plate. The second linear direct drive motor can drive the second sliding plate to move along the second sliding grooves. A positioning notch for accommodating the installation of the camera microscopic probe is arranged in the middle of the second sliding plate.

[0010] Further, the direction of the first sliding grooves is perpendicular to the direction of the second sliding grooves.

[0011] Further, an arm adjusting mechanism is arranged inside the installation box. The flight components include arms, and a flight rotating motor is arranged at the end of the arms and is connected to a propeller.

[0012] Further, the arm adjusting mechanism comprises a main drive motor installed on the top of the installation box. The output shaft of the main drive motor passes through the top of the installation box and is connected to a central gear. Four groups of fixing frames are arranged on the inner wall of the installation box. An adjusting fixing plate is arranged on the fixing frames. A first dovetail groove is formed in the middle of the adjusting fixing plate. A first slider is slidably matched in the first dovetail groove. A first rack is arranged on the first slider, and an arm is fixedly connected to the end of the first rack. A fixing shaft is rotatably connected to the adjusting fixing plate. A first gear is installed at the upper end of the fixing shaft and meshes with the first rack. The lower end of the fixing shaft penetrates through the fixing frame and a lower gear is installed, and the lower gear meshes with the central gear.

[0013] Further, an arm guiding hole for the arm to pass through is arranged on the installation box.

[0014] Furthermore, a support plate is fixedly connected to the mounting frame. The support plate is connected to a bearing bracket through a telescopic rod group. A push rod mechanism is provided in the mounting box. The push rod mechanism and the telescopic rod group cooperate to enable the camera microscopic probe to abut against a high-rise vertical wall.

[0015] Furthermore, the telescopic rod group includes an outer sleeve. An inner slider is slidably fitted in the outer sleeve. An inner rod is fixedly connected to the inner slider. A sealing ring is provided at the end of the outer sleeve. A rod guiding hole for the inner rod to pass through is provided in the middle of the sealing ring. A flexible spring is provided between the sealing ring and the inner slider. The flexible spring can drive the inner slider to abut against the bottom of the outer sleeve.

[0016] Furthermore, a push rod mechanism is installed on the fixing frame. The push rod mechanism includes a connecting plate. The connecting plate is fixedly connected to the fixing frame. A second dovetail groove is provided on the connecting plate. A second slider is slidably fitted in the second dovetail groove. A second rack is fixedly connected to the second slider. The second rack meshes with a first gear. A push rod is provided at the end of the second rack. A push rod guiding hole for the push rod to pass through is provided on the mounting box.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention adjusts the state of the legs through a biaxial drive motor, combines with the arm adjusting mechanism to realize the flexible storage and deployment of the flight assembly, and through the precise cooperation of the translation mechanism and the telescopic rod group, enables the camera microscopic probe to accurately abut against the crack of the high-rise vertical wall, conducts high-precision crack width measurement and recording, effectively improves the accuracy and efficiency of crack monitoring, and provides a strong guarantee for the building structure safety of special functional places. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic structural diagram of the translation mechanism;

[0020] Figure 3 is a schematic structural diagram of the present invention during use;

[0021] Figure 4 is a schematic structural diagram of the telescopic rod group;

[0022] Figure 5 is a schematic structural diagram of the arm adjusting mechanism;

[0023] Among them: 100-high-rise vertical wall; 101-main drive motor; 1-installation box; 11-rotating shaft; 12-installation frame; 13-leg; 14-rest rod; 15-rubber anti-skid pad; 2-flight assembly; 21-machine arm; 22-flight rotating motor; 23-propeller; 211-machine arm guide hole; 31-support plate; 321-outer sleeve; 322-inner slider; 323-inner rod; 324-blocking ring; 325-inner rod guide hole; 326-flexible spring; 33-support frame; 4-translation mechanism; 41-translation bottom plate; 411-first slide groove; 4 2-first slide plate; 43-first linear direct drive motor; 421-second slide groove; 44-second slide plate; 45-second linear direct drive motor; 46-positioning notch; 51-crack width gauge; 52-camera microscope probe; 6-top rod; 61-top rod guide hole; 71-center gear; 72-fixed frame; 8-arm adjustment mechanism; 81-adjustment fixing plate; 811-first dovetail groove; 82-first rack; 83-first slider; 84-fixed shaft; 85-first gear; 91-connecting plate; 911-second dovetail groove; 92-second slider; 93-second rack. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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. The present invention is further described in combination with the drawings and embodiments:

[0025] like Figures 1 to 5 As shown, a crack monitoring device for a large-span concrete structure in a special function place includes an installation box 1, on which a plurality of flight components 2 are installed to provide the device with flight capabilities. A dual-axis drive motor is arranged in the installation box, and the output shaft of the dual-axis drive motor is connected to a rotating shaft 11, and a mounting frame 12 is fixedly connected to the outer side of the rotating shaft, and a support leg 13 is arranged on the mounting frame, and a support rod 14 is arranged at the bottom of the support leg. A support bracket 33 is fixedly connected to the mounting frame, and a translation mechanism 4 is arranged at the bottom of the support bracket for adjusting the position of a crack width gauge 51. A crack width gauge 51 is fixedly connected to the top of the support bracket. The crack width gauge can be purchased from Haichuang Hi-Tech's HC-CK103 crack width gauge, and the camera microprobe 52 of the crack width gauge is fixedly connected to the translation mechanism. The camera microprobe has a built-in scale and camera, which can measure and record the crack width with high precision.

[0026] Furthermore, a rubber anti-skid pad layer 15 is provided at the bottom of the abutment rod to increase the friction with the wall and improve stability.

[0027] Working mode: When it is necessary to detect the cracks on the high-rise vertical wall 100, the rotation of the biaxial drive motor can drive the outrigger to change from the vertical state to the horizontal state. While the abutting rod is abutted against the wall, it is necessary to make the crack between the two abutting rods. The position of the camera microscope probe can be adjusted to directly above the crack through the translation mechanism, and then take pictures for evidence. The HC-CK103 crack width detector is internally provided with a scale and a camera. In this embodiment, since the camera microscope probe does not fit the wall, the algorithm can be adjusted according to the distance between the microscope probe and the wall to obtain the true crack width.

[0028] In at least one embodiment, the translation mechanism includes a translation bottom plate 41, the translation bottom plate is fixedly connected to the bottom of the support bracket, two first sliding grooves 411 are provided on the translation bottom plate, a first sliding plate 42 is slidably fitted in the first sliding groove, a first linear direct drive motor 43 is installed on the translation bottom plate, the first linear direct drive motor is connected to the first sliding plate, and the first linear direct drive motor can drive the first sliding plate to move along the first sliding groove; two second sliding grooves 421 are provided on the first sliding plate, a second sliding plate 44 is slidably fitted in the second sliding groove, a second linear direct drive motor 45 is installed on the first sliding plate, the second linear direct drive motor is connected to the second sliding plate, and the second linear direct drive motor can drive the second sliding plate to move along the second sliding groove. A positioning slot 46 for installing the camera microscope probe is provided in the middle of the second sliding plate.

[0029] The scheme is refined. The direction of the first sliding groove is perpendicular to the direction of the second sliding groove to enable the flexible movement of the camera microscope probe 52 in the two-dimensional plane.

[0030] To prevent the flight component of the device from touching the wall during flight and causing an accident, an arm adjustment mechanism 8 is provided in the installation box. The flight component includes an arm 21, a flight rotation motor 22 is provided at the end of the arm, and the flight rotation motor is connected to a propeller 23. This flight component is widely used in existing drones and is prior art, so no further explanation will be given.

[0031] The arm adjustment mechanism includes a main drive motor 101, which is installed on the top of the installation box. The output shaft of the main drive motor passes through the top of the installation box and is connected to a central gear 71. Four groups of fixing brackets 72 are provided on the inner wall of the installation box. An adjustment fixing plate 81 is provided on the fixing bracket. A first dovetail groove 811 is formed in the middle of the adjustment fixing plate. A first slider 83 is slidably fitted in the first dovetail groove. A first rack 82 is provided on the first slider. The end of the first rack is fixedly connected to an arm 21. A fixing shaft 84 is rotatably connected to the adjustment fixing plate. A first gear 85 is installed at the upper end of the fixing shaft. The first gear meshes with the first rack. The lower end of the fixing shaft passes through the fixing bracket and is installed with a lower gear. The lower gear meshes with the central gear. When the main drive motor drives the central gear to rotate, the lower gear also rotates. Due to the coaxial design of the lower gear and the first gear, the first gear will drive the first rack to drive, so the arm will also retract into the installation box or extend out of the installation box.

[0032] Further, the installation box is provided with an arm guiding hole 211 for the arm to pass through.

[0033] In at least one embodiment, a support plate 31 is fixedly connected to the mounting frame. The support plate is connected to a supporting bracket through a telescopic rod group. A push rod mechanism is provided in the installation box. The push rod mechanism and the telescopic rod group can cooperate to make the camera microprobe abut against the high-rise vertical wall.

[0034] Further, as Figure 4 shown, the telescopic rod group includes an outer sleeve 321. An inner slider 322 is slidably fitted in the outer sleeve. An inner rod 323 is fixedly connected to the inner slider. A sealing ring 324 is provided at the end of the outer sleeve. An inner rod guiding hole 325 for the inner rod to pass through is provided in the middle of the sealing ring. A flexible spring 326 is provided between the sealing ring and the inner slider. The flexible spring can drive the inner slider to abut against the bottom of the outer sleeve.

[0035] In at least one embodiment, as Figure 5 shown, the push rod mechanism is installed on the fixing bracket. The push rod mechanism includes a connecting plate 91, which is fixedly connected to the fixing bracket. A second dovetail groove 911 is provided on the connecting plate. A second slider 92 is slidably fitted in the second dovetail groove. A second rack 93 is fixedly connected to the second slider. The second rack meshes with the first gear. A push rod 6 is provided at the end of the second rack. The installation box is provided with a push rod guiding hole 61 for the push rod to pass through.

[0036] Working mode, as Figure 3As shown, when crack detection of the high-rise vertical wall 100 is required, first, the rotation of the biaxial drive motor can drive the support legs to change from the vertical state to the horizontal state. Then, the rotation of the main drive motor drives the central gear to rotate, and the lower gear also rotates accordingly. Since the lower gear and the first gear are coaxially designed, the first gear will drive the first rack to move, so the robotic arm will also retract into the installation box. While the robotic arm is slowly retracting into the installation box, because the second rack meshes with the first gear, the ejector rod will protrude from the installation box, so that the end of the ejector rod abuts against the surface of the support bracket, causing the flexible spring to be compressed and the inner rod to extend from the outer sleeve. Thus, after the abutting rod abuts against the wall, the camera microprobe can get closer to the wall until it abuts against the crack in the wall. It should be noted that the translation mechanism needs to position the camera microprobe directly above the crack before the camera limit probe abuts against the wall. At this time, the scale built into the camera microprobe and the photos taken by the camera are the true crack widths, without the need for secondary algorithm processing.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A crack monitoring device for a large-span concrete structure in a special function place, comprising an installation box, on which a plurality of flight components are installed, characterized in that: A dual-axis drive motor is provided in the installation box, the output shaft of the dual-axis drive motor is connected to a rotating shaft, a mounting frame is fixedly connected to the outer side of the rotating shaft, a support leg is provided on the mounting frame, a support rod is provided at the bottom of the support leg, a supporting frame is fixedly connected to the mounting frame, a translation mechanism is provided at the bottom of the supporting frame, a crack width gauge is fixedly connected to the top of the supporting frame, and a camera microscope probe of the crack width gauge is fixedly connected to the translation mechanism.

2. The large-span concrete structure crack monitoring device for special function places according to claim 1 is characterized in that: A rubber anti-skid pad layer is provided at the bottom of the abutting rod.

3. The large-span concrete structure crack monitoring device for special function places according to claim 1 is characterized in that: The translation mechanism includes a translation base plate, which is fixedly connected to the bottom of the supporting bracket, and two first slide grooves are provided on the translation base plate, in which a first slide plate is slidably fitted, and a first linear direct-drive motor is installed on the translation base plate, and the first linear direct-drive motor is connected to the first slide plate, and the first linear direct-drive motor can drive the first slide plate to move along the first slide groove; two second slide grooves are provided on the first slide plate, in which a second slide plate is slidably fitted, and a second linear direct-drive motor is installed on the first slide plate, and the second linear direct-drive motor is connected to the second slide plate, and the second linear direct-drive motor can drive the second slide plate to move along the second slide groove, and a positioning notch for accommodating the installation of a camera microscope probe is provided in the middle of the second slide plate.

4. The large-span concrete structure crack monitoring device for special function places according to claim 3 is characterized in that: The first sliding groove direction is arranged perpendicular to the second sliding groove direction.

5. The large-span concrete structure crack monitoring device for special function places according to claim 1 is characterized in that: An arm adjustment mechanism is arranged in the installation box, the flight assembly comprises an arm, a flight rotating motor is arranged at the end of the arm, and the flight rotating motor is connected to a propeller.

6. The device for monitoring cracks in large-span concrete structures in special function places according to claim 5 is characterized in that: The arm adjustment mechanism includes a main drive motor, which is installed on the top of the installation box. The output shaft of the main drive motor passes through the top of the installation box and is connected to the central gear. Four sets of fixing frames are provided on the inner wall of the installation box. An adjusting fixing plate is provided on the fixing frame. A first dovetail groove is formed in the middle of the adjusting fixing plate. A first slider is slidably fitted in the first dovetail groove. A first rack is provided on the first slider. The end of the first rack is fixedly connected to the arm. A fixed shaft is rotatably connected to the adjustment fixing plate. A first gear is installed on the upper end of the fixed shaft, and the first gear is meshed with the first rack. A lower gear is installed after the lower end of the fixed shaft passes through the fixing frame, and the lower gear is meshed with the central gear.

7. The device for monitoring cracks in large-span concrete structures in special function places according to claim 6 is characterized in that: The installation box is provided with an arm guide hole for accommodating the arm to pass through.

8. The device for monitoring cracks in large-span concrete structures in special function places according to claim 6 is characterized in that: The mounting frame is fixedly connected with a support plate, and the support plate is connected with a support frame through a telescopic rod group. A push rod mechanism is arranged in the mounting box, and the push rod mechanism cooperates with the telescopic rod group to enable the camera microscope probe to lean against a high-rise vertical wall.

9. The device for monitoring cracks in large-span concrete structures in special function places according to claim 8 is characterized in that: The telescopic rod group includes an outer sleeve, an inner slider is slidably fitted in the outer sleeve, an inner rod is fixedly connected to the inner slider, a sealing ring is provided at the end of the outer sleeve, an inner rod guide hole for accommodating the inner rod to pass through is provided in the middle of the sealing ring, a flexible spring is provided between the sealing ring and the inner slider, and the flexible spring can drive the inner slider to rest against the bottom of the outer sleeve.

10. The crack monitoring device for large-span concrete structures in special function places according to claim 9 is characterized in that: A push rod mechanism is installed on the fixed frame, and the push rod mechanism includes a connecting plate, the connecting plate is fixedly connected to the fixed frame, a second dovetail groove is provided on the connecting plate, a second slider is slidably fitted in the second dovetail groove, a second rack is fixedly connected to the second slider, the second rack is meshed with the first gear, a push rod is provided at the end of the second rack, and a push rod guide hole for accommodating the push rod to pass through is provided on the mounting box.

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