Building external wall crack detection device

Abstract

The invention relates to a building outer wall crack detection device. Current high-rise building outer wall detection is difficult, a long-distance scanner is poor in precision, a short-distance scanner is difficult to implement, and endurance and positioning are difficult when the scanner is mounted on an unmanned aerial vehicle. According to the device, high-precision detection is achieved through the splicing base system, the translation driving system, the rotating stand column, the edge beam, the splicing frame rod, the winding and unwinding assembly, the scanner platform and other structures. Compared with the prior art, the detection precision is high, and small cracks can be accurately identified; the implementation difficulty is low, and a complex aerial work platform does not need to be built; the system has the advantages of simple structure, good detection continuity, no endurance and secondary positioning trouble and the like, effectively solves the technical problem of building outer wall detection, and improves the detection efficiency and accuracy.

Description

Technical Field

[0001] The invention relates to the field of crack detection, and in particular to a device for detecting cracks in a building exterior wall. Background Art

[0002] With the acceleration of urbanization, the number of high-rise buildings is increasing, and the safety inspection of building exterior walls has become increasingly important. At present, the inspection of high-rise building exterior walls faces many difficulties.

[0003] In terms of detection methods, long-distance and large-range scanners can quickly cover large areas of walls, but their accuracy is poor and it is difficult to detect small cracks such as those with a width of less than 0.1 mm, which are often important signals of building safety hazards. Although short-range high-precision scanners have high precision and accuracy and can clearly identify millimeter-level or even micron-level cracks, they are difficult to implement for high-rise building exterior wall detection. Due to their short working distance, they need to build complex scaffolding or other aerial work platforms, which is not only costly, but also time-consuming and labor-intensive, and also poses a greater safety risk.

[0004] Although the use of drones with high-precision scanners has solved the problem of building work platforms to a certain extent, it faces new challenges. The endurance of drones is limited. The endurance of general civilian drones is mostly between 30 minutes and 2 hours, which is difficult to meet the needs of long-term inspection of large-scale high-rise building exterior walls. Moreover, once the drone returns to recharge, it is extremely difficult to carry the scanner back to the previous measurement position accurately, which greatly reduces the consistency and accuracy of the inspection work.

[0005] In summary, the current building exterior wall inspection technologies have their own limitations, and a new inspection solution is urgently needed to solve these problems. Summary of the invention

[0006] Based on this, it is necessary to provide a building exterior wall crack detection device to address the existing technical problems.

[0007] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: A device for detecting cracks in the exterior wall of a building comprises a splicing base system, a translation drive system arranged on the splicing base system, two rotating columns vertically axially connected to the two ends of the splicing base system, two side beams in a horizontal state and respectively movably connected to the top ends of the corresponding rotating columns, a splicing frame rod whose two ends are respectively axially connected to the same end of the two side beams, a winding and unwinding assembly arranged on the translation output end of the translation drive system, and a scanner platform connected to the steel rope hanging end of the winding and unwinding assembly, the steel rope end of the winding and unwinding assembly is wound around the splicing frame rod and then hangs downward to be connected to the scanner platform, each of the side beams is provided with a counterweight tail rod for hanging a counterweight block at one end away from the splicing frame rod, and a width limiting rod for maintaining a fixed distance between the splicing frame rod and the translation drive system is fixedly arranged.

[0008] Furthermore, the spliced ​​base system is formed by a plurality of unit strips of equal length connected end to end by bolts, and the spliced ​​frame rod is formed by a plurality of single rods of equal length connected end to end by threads.

[0009] Furthermore, the translation drive system includes two synchronous wheels respectively connected to the two ends of the splicing base system at fixed points, a driving motor fixedly arranged in the middle of the splicing base system, a splicing synchronous belt connecting the two synchronous wheels, a splicing slide rail fixedly arranged on the splicing base system and parallel to the splicing synchronous belt, and a translation slide table slidably arranged on the splicing slide rail, an active wheel for driving the splicing synchronous belt is connected to the output shaft of the driving motor, the translation slide table is fixedly connected to the splicing synchronous belt, and an angle sensor is provided at the fixed-point shaft joint of the rotating column for detecting the rotation angle of the rotating column.

[0010] Furthermore, the driving motor is fixedly arranged above the splicing base system through a motor bracket, the driving wheel is located on the inner side of the motor bracket, and avoidance holes for the splicing synchronous belt to pass through are opened on both sides of the motor bracket. A strip limit plate is fixedly arranged on one side of the motor bracket, and two tensioning mechanisms symmetrically distributed on both sides of the driving wheel are arranged on the inner side of the motor bracket. The tensioning mechanism consists of a long U-shaped bracket, a roller axially connected to the open end of the long U-shaped bracket, and an adjusting screw screwed to the closed end of the long U-shaped bracket. The strip limit plate passes through the inner sides of the two long U-shaped brackets, and the two adjusting screws are both pressed against the strip limit plate. When the adjusting screw is pressed against the strip limit plate, the roller is pressed against the splicing synchronous belt.

[0011] Furthermore, a top cover for the side beam to pass through is provided on the top of the rotating column, and one end of the side beam is connected to the splicing frame rod by a hanger, and the hanger consists of an upper shaft lock and a lower shaft lock, and the upper end of the upper shaft lock and the lower end of the lower shaft lock are respectively fixedly connected to the side beam and the splicing frame rod, and a T-shaped cylindrical hanger is formed at the bottom of the upper shaft lock, and a hanging groove for accommodating the T-shaped cylindrical hanger is formed at the upper end of the lower shaft lock.

[0012] Furthermore, the width limiting rod is composed of a fixed rod, a ring rod and a hexagonal adjustment rod. The lower end of the fixed rod is fixedly arranged on the translation slide in an inclined state. The ring rod is movably sleeved on the middle part of the splicing frame rod. The facing ends of the fixed rod and the ring rod are both provided with external threads, and the two ends of the hexagonal adjustment rod are respectively threadedly screwed to the ends of the fixed rod and the ring rod.

[0013] Furthermore, there are two reeling and unreeling assemblies, which are symmetrically arranged, and two spaced-apart limiting groove wheels for winding the steel rope are arranged in the middle of the splicing frame rod.

[0014] Furthermore, a connecting sleeve is fixedly provided at the lower end of the rotating column and at one end of the counterweight tail rod close to the rotating column, and an oblique support rod is provided between the two connecting sleeves.

[0015] Furthermore, a counter is provided on one side of the retractable and retractable reel assembly for recording the retracted and retracted length of the steel wire.

[0016] Furthermore, the driving wheel and the synchronous wheel can be replaced by sprockets, and the spliced ​​synchronous belt can be replaced by a spliced ​​combined chain.

[0017] Compared with the prior art, the present invention has the following beneficial effects: First, compared with long-distance and large-range scanners, this solution uses short-distance and high-precision scanners, which can clearly detect small cracks on the building's exterior walls with an accuracy of millimeters or even higher, effectively avoiding missing safety hazards due to insufficient detection accuracy; Second, compared with the situation where a close-range high-precision scanner requires the construction of a complex aerial work platform, this solution does not require the construction of a scaffolding through a unique structure such as a spliced ​​base, adjustable rotating columns and side beams, which greatly reduces the difficulty of implementation and safety risks, while also reducing costs and time consumption; Third, compared with the method of mounting scanners on drones, this solution does not have the problem of endurance and can work stably for a long time. And because the equipment is fixed on the top of the building, there is no problem of difficulty in returning to the original measurement position after returning to recharge, which ensures the continuity and accuracy of the detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a planar cross-sectional view of the present invention at the width limiting rod; Figure 3 yes Figure 2 A schematic diagram of the structure enlargement at point A; Figure 4 is a planar cross-sectional view of the present invention at the edge beam; Figure 5 yes Figure 4 A schematic diagram of the structure at B in FIG. Figure 6 It is a partial structural plane section view of the translation drive system; Figure 7 This is a three-dimensional diagram of the local structure of the translation drive system. Figure 1 ; Figure 8 This is a three-dimensional diagram of the local structure of the translation drive system. Figure 2 ; Fig. 9 It is a schematic diagram of the three-dimensional structure of the hanging parts; The numbers in the figure are: 1-splicing base system; 2-rotating column; 3-side beam; 4-splicing frame rod; 5-rewinding and unwinding assembly; 6-scanner platform; 7-counterweight tail rod; 8-width limiting rod; 9-synchronous wheel; 10-driving motor; 11-splicing synchronous belt; 12-splicing slide rail; 13-translational slide; 14-driving wheel; 15-motor bracket; 16-avoidance through hole; 17-strip limit plate; 18-long U-shaped bracket; 19-roller; 20-adjusting screw; 21-top cover; 22-hanging piece; 23-upper shaft lock; 24-lower shaft lock; 25-T-shaped cylindrical hanger; 26-hanging groove; 27-fixing rod; 28-ring rod; 29-hexagonal adjustment rod; 30-limiting groove wheel; 31-diagonal support rod. DETAILED DESCRIPTION

[0019] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Reference Figures 1 to 9As shown, a device for detecting cracks in the exterior wall of a building comprises a splicing base system 1, a translation drive system arranged on the splicing base system 1, two rotating columns 2 which are vertically axially connected to the two ends of the splicing base system 1, two side beams 3 which are horizontally and movably connected to the top ends of the corresponding rotating columns 2, a splicing frame rod 4 whose two ends are respectively axially connected to the same end of the two side beams 3, a reel assembly 5 arranged on the translation output end of the translation drive system, and a scanner platform 6 connected to the steel rope hanging end of the reel assembly 5, the steel rope end of the reel assembly 5 is suspended downward after being wound around the splicing frame rod 4 and connected to the scanner platform 6, each of the side beams 3 is provided with a counterweight tail rod 7 for hanging a counterweight block at one end away from the splicing frame rod 4, and a width limiting rod 8 for maintaining a fixed distance between the splicing frame rod 4 and the translation drive system is fixedly arranged.

[0021] Working principle: The splicing base system 1 serves as the basic support structure of the entire device, providing a stable placement platform. The translation drive system is responsible for driving the reel assembly 5 to move horizontally. The rotating column 2 can rotate around its axial connection with the splicing base system 1, thereby driving the side beam 3 connected to it to change its angle, and the side beam 3 drives the splicing frame rod 4 to adjust its position to achieve coverage of walls at different positions. The reel assembly 5 controls the lifting and lowering of the scanner platform 6 by retracting and releasing the steel rope to complete the scanning of different heights of the building's exterior wall. The counterweight tail rod 7 hangs a counterweight block to balance the entire device to prevent tipping due to center of gravity shift during operation. The width limiting rod 8 maintains a fixed distance between the splicing frame rod 4 and the translation drive system to ensure that the distance between the scanner and the wall remains stable at all times.

[0022] Problem solved: It solves the problem that traditional inspection equipment is difficult to adapt to different building widths, has a limited scanning range, and is difficult to ensure stability and accuracy during the scanning process. Through the splicable base and frame, it can flexibly adapt to various building sizes; the multi-angle adjustable structure expands the scanning range; the counterweight and width limit design ensure stability and scanning accuracy.

[0023] Effect achieved: A comprehensive and high-precision inspection of the building's exterior walls was achieved. The device can be flexibly built according to the actual situation of the building, which improves the inspection efficiency and accuracy and reduces the inspection cost and time consumption caused by equipment adaptability issues.

[0024] The spliced ​​base system 1 is formed by a plurality of unit strips of equal length connected end to end by bolts, and the spliced ​​frame rod 4 is formed by a plurality of single rods of equal length connected end to end by threaded connection.

[0025] Working principle: In actual use, according to the width of the building's exterior wall, multiple unit strips of equal length are connected in sequence by bolts to form a splicing base system 1 of appropriate length. Similarly, for the splicing rack rod 4, single rods of equal length are screwed end to end through threads to make their length meet the detection requirements.

[0026] Problem solved: The problem that the detection device is difficult to adapt to different building sizes is solved. Traditional detection equipment is often of fixed size, and the equipment needs to be redesigned or modified for building exterior walls of different widths. However, this structure can be spliced ​​and assembled conveniently and quickly, greatly improving the versatility of the equipment.

[0027] Effects achieved: Improved flexibility and versatility of the device, reduced equipment production and maintenance costs. Appropriate-sized detection devices can be quickly built according to different construction projects, reducing the possibility of equipment idleness and improving equipment efficiency.

[0028] The translation drive system includes two synchronous wheels 9 respectively connected to the two ends of the splicing base system 1 at fixed points, a driving motor 10 fixedly arranged in the middle of the splicing base system 1, a splicing type synchronous belt 11 connecting the two synchronous wheels 9, a splicing slide rail 12 fixedly arranged on the splicing base system 1 and parallel to the splicing type synchronous belt 11, and a translation slide 13 slidably arranged on the splicing slide rail 12. A driving wheel 14 for driving the splicing type synchronous belt 11 is connected to the output shaft of the driving motor 10. The translation slide 13 is fixedly connected to the splicing type synchronous belt 11. An angle sensor is provided at the fixed-point shaft joint of the rotating column 2 for detecting the rotation angle of the rotating column 2.

[0029] Working principle: After the drive motor 10 is started, its output shaft drives the driving wheel 14 to rotate, and the driving wheel 14 drives the spliced ​​synchronous belt 11 to move. Since the synchronous belt is connected to the two synchronous wheels 9, and the translation slide 13 is fixedly connected to the synchronous belt, the movement of the synchronous belt drives the translation slide 13 to move horizontally along the spliced ​​slide rail 12, and then drives the reel assembly 5 installed on the translation slide 13 to move horizontally. The angle sensor monitors the rotation angle of the rotating column 2 in real time and feeds back the data to the control system so as to accurately control the rotation angle of the rotating column 2 and realize accurate positioning of the scanning position.

[0030] Problem solved: The problem of driving the horizontal movement of the reel assembly 5 and the problem of difficult precise control of the scanning position are solved. The traditional driving method may have problems such as insufficient power and poor synchronization, while the translation drive system ensures the synchronization and stability of the movement of both sides through the cooperation of the synchronous wheel 9 and the synchronous belt; the angle sensor realizes the precise monitoring of the angle of the rotating column 2, providing a guarantee for precise scanning.

[0031] Effects achieved: The reel assembly 5 is moved smoothly and precisely horizontally, which improves the accuracy and comprehensiveness of scanning. By precisely controlling the angle of the rotating column 2 and the horizontal position of the reel assembly 5, it is possible to ensure that the scanner platform 6 can cover all areas of the building's exterior wall, avoiding scanning blind spots.

[0032] The driving motor 10 is fixedly arranged above the splicing base system 1 through a motor bracket 15, the driving wheel 14 is located on the inner side of the motor bracket 15, and avoidance holes 16 for the splicing synchronous belt 11 to pass through are opened on both sides of the motor bracket 15. A strip limit plate 17 is fixedly arranged on one side of the motor bracket 15, and two tensioning mechanisms symmetrically distributed on both sides of the driving wheel 14 are arranged on the inner side of the motor bracket 15. The tensioning mechanism consists of a long U-shaped bracket, a roller 19 axially connected to the open end of the long U-shaped bracket, and an adjusting screw 20 screwed to the closed end of the long U-shaped bracket. The strip limit plate 17 passes through the inner sides of the two long U-shaped brackets, and the two adjusting screws 20 are both pressed against the strip limit plate 17. When the adjusting screw 20 is pressed against the strip limit plate 17, the roller 19 is pressed against the splicing synchronous belt 11.

[0033] Working principle: The driving motor 10 is firmly installed on the splicing base system 1 through the motor bracket 15, and the driving wheel 14 is connected to the motor output shaft inside the motor bracket 15 and drives the synchronous belt. When the tension of the synchronous belt needs to be adjusted, the adjusting screw 20 is rotated. Since the adjusting screw 20 is pressed against the strip-shaped limit plate 17, as the adjusting screw 20 rotates, the long U-shaped bracket will be displaced, so that the roller 19 connected to its open end is pressed against or loosened from the splicing synchronous belt 11, so as to achieve the purpose of adjusting the tension.

[0034] Problem solved: The problem of loosening of the spliced ​​synchronous belt 11 during long-term use and the problem of connection stability between the synchronous belt and the driving wheel 14 are solved. Loosening of the synchronous belt will lead to reduced power transmission efficiency and even slippage, affecting the normal operation of the equipment. The tensioning mechanism can adjust the tension of the synchronous belt at any time to ensure stable power transmission.

[0035] Effects achieved: Stable operation of the translation drive system is ensured, and the service life of the spliced ​​synchronous belt 11 is extended. Stable power transmission makes the horizontal movement of the reel assembly 5 more stable, improves the accuracy and reliability of scanning, and reduces the number of detection interruptions caused by equipment failure.

[0036] The top of the rotating column 2 is provided with a top cover 21 for the side beam 3 to pass through. One end of the side beam 3 is connected to the splicing frame rod 4 via a hanger 22. The hanger 22 consists of an upper shaft lock 23 and a lower shaft lock 24. The upper end of the upper shaft lock 23 and the lower end of the lower shaft lock 24 are respectively fixed to the side beam 3 and the splicing frame rod 4. The bottom of the upper shaft lock 23 is formed with a T-shaped cylindrical hanger, and the upper end of the lower shaft lock 24 is formed with a hanging groove 26 for accommodating the T-shaped cylindrical hanger.

[0037] Working principle: The side beam 3 passes through the top cover 21 on the top of the rotating column 2, so that the side beam 3 can rotate horizontally around the top of the rotating column 2. When the angle of the splicing frame rod 4 needs to be adjusted, the rotating column 2 rotates, driving the side beam 3 to rotate, and the side beam 3 drives the splicing frame rod 4 to change its angle through the hanging piece 22. The upper locking shaft 23 and the lower locking shaft 24 of the hanging piece 22 cooperate with the T-shaped cylindrical hanger and the hanging groove 26 to achieve a stable connection between the side beam 3 and the splicing frame rod 4, while allowing a certain degree of rotational freedom between them.

[0038] Problem solved: The problem of connection and rotation flexibility between the side beam 3, the rotating column 2 and the splicing frame rod 4 is solved. The traditional connection method may not meet the needs of multi-angle adjustment, or the connection is not stable enough. This structure not only ensures the reliability of the connection, but also enables the side beam 3 and the splicing frame rod 4 to be flexibly adjusted at different angles, adapting to various complex building exterior wall detection scenarios.

[0039] Effects achieved: The scanning coverage of different angles of the building exterior wall is achieved, and the adaptability of the detection device is improved. The angle of the splicing frame rod 4 can be flexibly adjusted according to the actual shape of the building exterior wall and the detection requirements to ensure that the scanner platform 6 can reach the position required for detection, thereby improving the comprehensiveness of the detection.

[0040] The width limiting rod 8 is composed of a fixed rod 27, a ring rod 28 and a hexagonal adjustment rod 29. The lower end of the fixed rod 27 is fixedly arranged on the translation slide 13 in an inclined state. The ring rod 28 is movably sleeved on the middle part of the splicing frame rod 4. The facing ends of the fixed rod 27 and the ring rod 28 are both provided with external threads, and the two ends of the hexagonal adjustment rod 29 are respectively threadedly screwed to the ends of the fixed rod 27 and the ring rod 28.

[0041] Working principle: the fixed rod 27 is tilted and fixed on the translation slide 13, and the collar rod 28 is sleeved in the middle of the splicing frame rod 4. When the length of the width-limiting rod 8 needs to be adjusted to adapt to different working conditions, the hexagonal adjustment rod 29 is rotated. Since the two ends of the hexagonal adjustment rod 29 are respectively threadedly connected with the fixed rod 27 and the collar rod 28, as the hexagonal adjustment rod 29 rotates, the distance between the fixed rod 27 and the collar rod 28 will change, thereby adjusting the effective length of the width-limiting rod 8 and maintaining a fixed spacing between the splicing frame rod 4 and the translation drive system.

[0042] Problem solved: The problem of the distance between the splicing frame rod 4 and the translation drive system changing due to equipment movement or external factors during the detection process is solved, thereby ensuring that the distance between the scanner and the wall is always stable. Unstable distance will affect the scanning accuracy and lead to inaccurate detection results.

[0043] The effect achieved: The stability of the distance between the scanner and the wall during scanning is ensured, and the scanning accuracy is improved. The stable distance can make the images and data obtained by the scanner more accurate, which is conducive to the accurate detection and analysis of cracks in the building's exterior walls.

[0044] There are two reeling and unreeling assemblies 5 and they are symmetrically arranged. Two spaced-apart limiting groove wheels 30 for winding the steel rope are arranged in the middle of the splicing frame rod 4 .

[0045] Working principle: Two symmetrically arranged reeling and unreeling assemblies 5 work simultaneously, and the lifting and lowering of the scanner platform 6 is controlled by reeling and unreeling the steel rope. After the steel rope is led out from the reeling and unreeling assemblies 5, it is wound around the limit groove wheel 30 in the middle of the splicing frame rod 4. The limit groove wheel 30 guides the direction of the steel rope, so that the steel rope remains stable during the reeling and unreeling process, avoiding the steel rope from being entangled or deviated, and ensuring that the scanner platform 6 can be lifted and lowered smoothly.

[0046] Problem solved: The stability problem and the problem of steel rope winding during the lifting process of the scanner platform 6 are solved. A single reel assembly 5 may cause uneven force on the scanner platform 6, resulting in tilting or shaking, while two symmetrically arranged reel assemblies 5 can make the force more uniform. The limit groove wheel 30 effectively avoids the winding and deviation of the steel rope during the movement, ensuring the normal operation of the equipment.

[0047] Effect achieved: The scanner platform 6 is smoothly lifted and lowered, and the scanning stability and reliability are improved. The smooth lifting process enables the scanner to obtain clearer and more accurate images and data, which is beneficial to the detection and analysis of cracks in the building exterior wall.

[0048] The lower end of the rotating column 2 and the end of the counterweight tail rod 7 close to the rotating column 2 are both fixedly provided with connecting sleeves, and an oblique support rod 31 is provided between the two connecting sleeves.

[0049] Working principle: The diagonal support rod 31 is connected to the lower end of the rotating column 2 and the end of the counterweight tail rod 7 close to the rotating column 2 through the connecting sleeves at both ends, forming a triangular support structure. During the operation of the device, especially when the rotating column 2 rotates, the diagonal support rod 31 can enhance the stability of the entire structure and prevent the connection between the rotating column 2 and the counterweight tail rod 7 from deformation or loosening.

[0050] When the side beam 3 rotates with the rotating column 2, since the length of the width-limiting rod 8 remains constant, in order to maintain the structural stability of the entire device and the characteristics of the parallelogram structure (the side beam 3, the spliced ​​frame rod 4, another side beam 3 and the spliced ​​base system 1 form a similar parallelogram structure), the length of the side beam 3 extending outward will inevitably change accordingly. A part of the side beam 3 is movably inserted into the counterweight tail rod 7. This carefully designed active connection method reserves sufficient activity margin. When the angle change of the side beam 3 causes the length change demand, the side beam 3 can freely telescope and slide in the counterweight tail rod 7. This activity margin can accurately meet the length change of the side beam 3 caused by the angle change, ensuring that in any state of the device operation, the counterweight tail rod 7 always works in coordination with the side beam 3 to jointly maintain the balance and stability of the device, effectively avoiding the shaking, imbalance and other problems caused by structural incoordination, and providing a solid structural guarantee for the accurate detection of cracks in the building exterior wall.

[0051] Problem solved: The stability problem of the connection between the rotating column 2 and the counterweight tail rod 7 when subjected to force is solved. When the rotating column 2 rotates and the device is subjected to external force, the connection part is easily subjected to large stress, and the diagonal brace rod 31 can disperse this stress and enhance the stability of the structure.

[0052] Effect achieved: Enhanced the structural stability of the entire detection device and improved the reliability of the equipment during operation. The stable structure can ensure the normal operation of the equipment and reduce failures and safety hazards caused by structural instability.

[0053] A counter is provided on one side of the retractable and reeling assembly 5 for recording the retracted and reeled length of the steel wire.

[0054] Working principle: The counter works synchronously with the reel assembly 5. When the reel assembly 5 reels in and out the steel rope, the counter records the reeled-in length of the steel rope. The operator can accurately control the lifting height of the scanner platform 6 according to the data displayed by the counter, and scan the building exterior wall at the set height interval.

[0055] Problem solved: The problem of being unable to precisely control the height of the scanner platform 6 has been solved. Precise height control is essential for comprehensive and accurate detection of cracks in building exterior walls, and it may be difficult for traditional equipment to accurately control the height of the lift.

[0056] Effect achieved: The precise control of the lifting height of the scanner platform 6 is achieved, which improves the accuracy and comprehensiveness of the detection. By precisely controlling the height, it can ensure that each area of ​​the building's exterior wall is effectively detected to avoid missing important crack information.

[0057] The driving wheel 14 and the synchronous wheel 9 can be replaced by sprockets, and the spliced ​​synchronous belt 11 can be replaced by a spliced ​​combined chain.

[0058] Working principle: When the driving wheel 14 and the synchronous wheel 9 are replaced by sprockets, and the spliced ​​synchronous belt 11 is replaced by a spliced ​​combined chain, the driving principle is similar. The driving motor 10 drives the driving sprocket to rotate, and the driving sprocket drives the driven sprocket to rotate through the chain, thereby realizing the horizontal movement of the translation slide 13. Chain transmission has the characteristics of large load-bearing capacity and wear resistance, and is suitable for different working scenarios and load requirements.

[0059] Problem solved: Solved the problem of equipment adaptability to transmission mode under different working conditions. In some cases with heavy loads or harsh working environments, the synchronous belt may not meet the requirements, while the chain drive is more reliable. The replaceable transmission parts improve the versatility and applicability of the equipment.

[0060] Effects achieved: Improved the adaptability and reliability of the equipment and expanded its application range. The appropriate transmission mode can be selected according to actual work needs to ensure that the equipment can operate stably under various working conditions, reducing the maintenance cost and failure rate of the equipment.

[0061] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A building exterior wall crack detection device, characterized in that: The invention comprises a splicing base system (1), a translation drive system arranged on the splicing base system (1), two rotating columns (2) vertically axially connected to the two ends of the splicing base system (1), two side beams (3) in a horizontal state respectively movably connected to the top of the corresponding rotating columns (2), a splicing frame rod (4) whose two ends are respectively axially connected to the same end of the two side beams (3), a reel assembly (5) arranged on the translation output end of the translation drive system, and a scanner platform (6) connected to the steel rope hanging end of the reel assembly (5), the steel rope end of the reel assembly (5) is wound around the splicing frame rod (4) and then hangs downward to be connected to the scanner platform (6), each of the side beams (3) is provided with a counterweight tail rod (7) for hanging a counterweight block at one end away from the splicing frame rod (4), and a width limiting rod (8) is fixedly arranged between the splicing frame rod (4) and the translation drive system for maintaining a fixed distance between the two.

2. A building exterior wall crack detection device according to claim 1, characterized in that: The spliced ​​base system (1) is formed by a plurality of unit strips of equal length connected end to end by bolts, and the spliced ​​frame rod (4) is formed by a plurality of single rods of equal length connected end to end by threaded connection.

3. A building exterior wall crack detection device according to claim 1, characterized in that: The translation drive system comprises two synchronous wheels (9) respectively connected to the two ends of the splicing base system (1) at fixed points, a driving motor (10) fixedly arranged in the middle of the splicing base system (1), a splicing type synchronous belt (11) connecting the two synchronous wheels (9), a splicing slide rail (12) fixedly arranged on the splicing base system (1) and parallel to the splicing type synchronous belt (11), and a translation slide (13) slidably arranged on the splicing slide rail (12), an active wheel (14) for driving the splicing type synchronous belt (11) is connected to the output shaft of the driving motor (10), the translation slide (13) is fixedly connected to the splicing type synchronous belt (11), and an angle sensor is provided at the fixed point shaft connection of the rotating column (2) for detecting the rotation angle of the rotating column (2).

4. A building exterior wall crack detection device according to claim 3, characterized in that: The driving motor (10) is fixedly arranged above the spliced ​​base system (1) via a motor bracket (15); the driving wheel (14) is located on the inner side of the motor bracket (15); avoidance holes (16) for the spliced ​​synchronous belt (11) to pass through are provided on both sides of the motor bracket (15); a strip-shaped limiting plate (17) is fixedly arranged on one side of the motor bracket (15); and two tensioning plates (17) symmetrically distributed on both sides of the driving wheel (14) are provided on the inner side of the motor bracket (15). The tensioning mechanism comprises a long U-shaped bracket (18), a roller (19) axially connected to the open end of the long U-shaped bracket (18), and an adjusting screw (20) screwed to the closed end of the long U-shaped bracket (18); the strip-shaped limit plate (17) passes through the inner sides of the two long U-shaped brackets (18); the two adjusting screws (20) are both pressed against the strip-shaped limit plates (17); when the adjusting screws (20) are pressed against the strip-shaped limit plates (17), the roller (19) is pressed against the spliced ​​synchronous belt (11).

5. A building exterior wall crack detection device according to claim 1, characterized in that: A top cover (21) for allowing a side beam (3) to pass through is provided on the top of the rotating column (2); one end of the side beam (3) is connected to the splicing frame rod (4) via a hanging piece (22); the hanging piece (22) is composed of an upper shaft lock (23) and a lower shaft lock (24); the upper end of the upper shaft lock (23) and the lower end of the lower shaft lock (24) are respectively fixed to the side beam (3) and the splicing frame rod (4); a T-shaped cylindrical hanging piece (25) is formed at the bottom of the upper shaft lock (23); and a hanging groove (26) for accommodating the T-shaped cylindrical hanging piece (25) is formed at the upper end of the lower shaft lock (24).

6. A building exterior wall crack detection device according to claim 3, characterized in that: The width limiting rod (8) is composed of a fixed rod (27), a collar rod (28) and a hexagonal adjustment rod (29); the lower end of the fixed rod (27) is fixedly arranged on the translation slide (13) in an inclined state; the collar rod (28) is movably sleeved on the middle part of the splicing frame rod (4); the ends of the fixed rod (27) and the collar rod (28) facing each other are both provided with external threads; and the two ends of the hexagonal adjustment rod (29) are respectively screwed on the ends of the fixed rod (27) and the collar rod (28).

7. A building exterior wall crack detection device according to claim 1, characterized in that: The number of the reeling and unreeling components (5) is two and they are symmetrically arranged. The middle of the splicing frame rod (4) is provided with two spaced-apart limiting groove wheels (30) for winding the steel rope.

8. A building exterior wall crack detection device according to claim 1, characterized in that: A connecting sleeve is fixedly provided at the lower end of the rotating column (2) and at one end of the counterweight tail rod (7) close to the rotating column (2), and an oblique support rod (31) is provided between the two connecting sleeves.

9. A building exterior wall crack detection device according to claim 7, characterized in that: A counter is provided on one side of the retractable and rewindable reel assembly (5) for recording the retracted and retracted length of the steel wire.

10. A building exterior wall crack detection device according to claim 3, characterized in that: The driving wheel (14) and the synchronous wheel (9) can both be replaced by sprocket wheels, and the spliced ​​synchronous belt (11) can be replaced by a spliced ​​combined chain.

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