Laser detection device and method for crack width of dangerous house wall

Abstract

The present application belongs to the technical field of building engineering detection, especially a laser detection device and method for crack width of dangerous house wall, aiming at the problem that the existing device cannot conveniently reach the horizontal state and is difficult to work stably in a vibrating environment, the following scheme is proposed, including a base, a detection adjusting module is arranged on the base, a plurality of circumferentially equidistant mounting frames are fixedly connected to the top of the base, a same stable supporting module is arranged on the plurality of mounting frames, the stable supporting module comprises a plurality of rotating frames, the plurality of rotating frames are fixedly connected to one side outer wall of the corresponding mounting frame, and a supporting rod frame is movably connected to the plurality of rotating frames. The laser detection device and method for crack width of dangerous house wall can conveniently reach and maintain the horizontal state, avoid measurement errors caused by device inclination, effectively reduce the interference of external vibration on the detection process, and ensure the accuracy and stability of laser detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering detection, and in particular to a laser detection device and method for wall crack width of dangerous building. BACKGROUND

[0002] The detection of wall cracks in dangerous buildings is a quantitative analysis of wall cracks in buildings with safety hazards through technical means to assess the stability of the structure. Laser detection technology uses the high directionality and monochromaticity of laser beams to project laser light onto the surface of the wall. Based on the principles of light reflection, diffraction or imaging, the width, distribution and morphology of the cracks are accurately measured. This method has the characteristics of non-contact, high precision and strong anti-interference, and is especially suitable for complex or dangerous environments such as dangerous buildings. It can quickly obtain crack data without contacting the wall, providing an objective basis for building safety assessment.

[0003] In the prior art, the laser detection device cannot conveniently reach a horizontal state, and the laser reference line may deviate during detection due to tilting, causing measurement data deviation. In addition, it is difficult to work stably in a vibrating environment, and external vibrations may directly transmit to the detection components, affecting the detection accuracy and even damaging the equipment. SUMMARY

[0004] The present application discloses a laser detection device and method for wall crack width of dangerous building, aiming to solve the technical problem that the existing device cannot conveniently reach a horizontal state and is difficult to work stably in a vibrating environment.

[0005] The laser detection device for wall crack width of dangerous building comprises a base, a detection adjustment module is arranged on the base, and a plurality of circumferentially equidistant mounting frames are fixedly connected to the top of the base. A same stable support module is arranged on the plurality of mounting frames. The stable support module comprises a plurality of rotating frames, each rotating frame is fixedly connected to one side of the outer wall of the corresponding mounting frame, each rotating frame is movably connected with a support rod frame, each support rod frame is movably connected with a sliding rod frame, the detection adjustment module comprises a rotating rod, the rotating rod is movably connected to the inner wall of the bottom of the base, the outer wall of the rotating rod is fixedly connected with a driving gear, a plurality of circular holes are circumferentially equidistantly arranged on the base, a threaded rod one is movably connected in each circular hole, the outer wall of each threaded rod one is fixedly connected with a driven gear, and each driven gear is meshed with the driving gear.

[0006] In a preferred scheme, two limiting rods are fixedly connected to one side of each of the plurality of support rod frames, each of the plurality of sliding rod frames is movably arranged outside the corresponding two limiting rods, a spring one is arranged outside each of the plurality of limiting rods, one end of each of the plurality of spring ones is fixedly connected to the corresponding support rod frame, and the other end is fixedly connected to the corresponding sliding rod frame.

[0007] In an preferred embodiment, the inner wall of one side of the plurality of support rod frames is fixedly connected with a rack, and the plurality of support rod frames are fixedly connected with a mounting frame, the plurality of mounting frames are provided with a movable hole, the plurality of movable holes are movably connected with a rotating shaft, the outer part of the plurality of rotating shafts are fixedly connected with a locking gear, and the plurality of locking gears are meshed with the corresponding racks.

[0008] In an preferred embodiment, the plurality of mounting frames are fixedly connected with a fixed rod, the outer part of the plurality of fixed rods are slidably connected with a sliding piece, the plurality of sliding pieces are fixedly connected with a locking gear ring on one side, the plurality of locking gear rings are meshed with the corresponding locking gears, the outer part of the plurality of fixed rods are surrounded by a spring two, the plurality of mounting frames are provided with a sliding groove, the plurality of sliding grooves are slidably connected with a push button, and the plurality of push buttons are fixedly connected with the corresponding sliding pieces.

[0009] In an preferred embodiment, the end of the plurality of sliding rod frames away from the support rod frame is movably connected with a rotating piece and two movable rods, the plurality of rotating pieces are provided with a sliding groove and two anchor holes, the plurality of sliding grooves are slidably connected with a sliding seat, the plurality of sliding seats are movably connected with two movable cylinders, the end of the plurality of movable rods away from the sliding rod frame is slidably connected with the inner wall of the corresponding movable cylinder, the plurality of sliding seats are fixedly connected with two spring rods on one side, and the end of the plurality of spring rods away from the sliding seat is fixedly connected with the corresponding rotating piece.

[0010] By setting the stable support module, the sliding piece drives the locking gear ring to disengage from the locking gear through the push button, the spring one elastically restores to push the sliding rod frame to slide, and after extending to the appropriate length, the push button is released, the spring two elastically restores to make the locking gear ring reengage with the locking gear, thereby fixing the position of the sliding rod frame. By continuously adjusting the extension length of the sliding rod frame in each direction, the base and the sliding table can be kept horizontal, so that the device can conveniently reach and keep horizontal, ensuring the accuracy of laser detection, avoiding measurement errors caused by the inclination of the device, and improving the precision of wall crack width detection. In the event of vibration, the sliding seat slides against the elastic action of the spring rod, effectively reducing the interference of external vibration on the detection process, ensuring the accuracy and stability of laser detection, so that the device can still work stably in a vibrating environment such as a construction site, and the application scenarios are expanded.

[0011] In an preferred embodiment, the outer part of the plurality of threaded rods one is threadedly connected with the same sliding table, the sliding table is fixedly connected with a fixed seat, the fixed seat is movably connected with a movable seat, the outer part of the movable seat is fixedly connected with a transmission gear ring, the sliding table is fixedly connected with a fixed frame, the fixed frame is fixedly connected with a universal motor, the output end of the universal motor is fixedly connected with a transmission gear, and the transmission gear is meshed with the transmission gear ring.

[0012] In an preferred scheme, the movable seat is fixedly connected with a sliding rod and two electric telescopic rods on one side away from the fixed seat, and two symmetrically sliding frames are slidably connected with the sliding rod, and one end of the two sliding frames is fixedly connected with the same fixed frame, and the driving ends of the two electric telescopic rods are fixedly connected with the fixed frame.

[0013] In an preferred scheme, a second threaded rod is movably connected with the inner wall of the fixed frame, the outer part of the second threaded rod is threadedly connected with a movable frame, a long rod is fixedly connected with the inner wall of the fixed frame, the movable frame slides on the outer part of the long rod, a laser detector is arranged on the movable frame, a servo motor is fixedly connected with the inner part of the fixed frame, the output end of the servo motor is fixedly connected with one end of the second threaded rod, and an image probe is fixedly connected with one side of the fixed frame.

[0014] In an preferred scheme, the top of the base is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with the rotating rod.

[0015] By arranging the detection and adjustment module, the driving motor engages to drive the first threaded rod to rotate, the sliding table is driven to an appropriate height, the position of the wall crack is determined by the image probe, the fixed frame is pushed by the electric telescopic rod, the laser detector is pushed towards the crack, the universal motor adjusts the angle of the fixed frame, the second threaded rod is rotated by the servo motor, the sliding frame drives the laser detector to slide, and under the cooperation of multiple directions, the laser detector can track and detect along the crack, so that the device or the position needs to be frequently moved or manually adjusted, and the detection efficiency and flexibility of the device are improved.

[0016] The laser detection method for the crack width of a dangerous house wall uses the dangerous house wall crack width laser detection device, and comprises the following steps.

[0017] Step one, move the device to a specified position, rotate the support rod frame to an appropriate angle, push the push button to unlock the locking gear, the spring one elastically restores to push the sliding rod frame to extend to an appropriate length, the base and the sliding table are kept horizontal by continuously adjusting the extension length of the sliding rod frame in each direction, and the rotating part is fixed to the ground through the anchoring hole.

[0018] Step two, after the device adjustment is completed, the driving motor drives the sliding table to an appropriate height, the position of the wall crack is determined by the image probe, the laser detector is pushed towards the crack by the electric telescopic rod, the angle of the fixed frame is adjusted by the universal motor, and the laser detector slides by the servo motor, and under the cooperation of multiple directions, the laser detector tracks and detects along the crack.

[0019] From the above, the dangerous house wall crack width laser detection device provided by the present application can conveniently reach and remain horizontal, ensuring the accuracy of laser detection, avoiding measurement errors caused by the inclination of the device, and effectively reducing the interference of external vibration on the detection process, ensuring the accuracy and stability of laser detection, so that the device can still work stably in a vibrating environment such as a construction site, improving the precision of wall crack width detection, and can track detection along the crack, avoiding the need to frequently move the device or manually adjust the position, improving the detection efficiency and flexibility of the device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The overall structure diagram of the dangerous house wall crack width laser detection device provided by the present application is shown in the figure.

[0021] Figure 2 The stable support module structure diagram of the dangerous house wall crack width laser detection device provided by the present application is shown in the figure.

[0022] Figure 3 The stable support module installation frame structure diagram of the dangerous house wall crack width laser detection device provided by the present application is shown in the figure.

[0023] Figure 4 The stable support module rotating part structure diagram of the dangerous house wall crack width laser detection device provided by the present application is shown in the figure.

[0024] Figure 5 The internal structure diagram of the base of the dangerous house wall crack width laser detection device provided by the present application is shown in the figure.

[0025] Figure 6 The detection adjustment module sliding table structure diagram of the dangerous house wall crack width laser detection device provided by the present application is shown in the figure.

[0026] Figure 7 The detection adjustment module fixed frame structure diagram of the dangerous house wall crack width laser detection device provided by the present application is shown in the figure.

[0027] In the figure: 1, base; 2, stable support module; 201, rotating frame; 202, support pole frame; 203, limiting rod; 204, spring one; 205, sliding pole frame; 206, rack; 207, mounting frame; 208, rotating shaft; 209, locking gear; 210, fixed rod; 211, push button; 212, sliding piece; 213, locking gear ring; 214, spring two; 215, rotating piece; 216, movable rod; 217, anchoring hole; 218, sliding seat; 219, spring rod; 220, movable cylinder piece; 3, detection adjustment module; 301, threaded rod one; 302, sliding table; 303, rotating rod; 304, driving gear; 305, driven gear; 306, driving motor; 307, fixed frame; 308, universal motor; 309, transmission gear; 310, fixed seat; 311, movable seat; 312, transmission gear ring; 313, electric telescopic rod; 314, sliding rod piece; 315, sliding frame; 316, fixed frame; 317, image probe; 318, long rod; 319, threaded rod two; 320, servo motor; 321, movable frame; 322, laser detector; 4, mounting frame. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0029] The disclosed laser detection device for crack width of dangerous house wall is mainly applied to the scene where the existing device cannot conveniently reach the horizontal state and is difficult to work stably in the vibration environment.

[0030] REFERENCE Figures 1-7 The laser detection device for crack width of dangerous house wall comprises a base 1, a detection adjustment module 3 is arranged on the base 1, a plurality of circumferentially equidistant mounting frames 4 are fixedly connected to the top of the base 1, the same stable support module 2 is arranged on the plurality of mounting frames 4, the stable support module 2 comprises a plurality of rotating frames 201, the plurality of rotating frames 201 are fixedly connected to the outer wall of the corresponding mounting frame 4, a support pole frame 202 is movably connected to the plurality of rotating frames 201, a sliding pole frame 205 is movably connected to the plurality of support pole frames 202, the detection adjustment module 3 comprises a rotating rod 303, the rotating rod 303 is movably connected to the inner wall of the bottom of the base 1, a driving gear 304 is fixedly connected to the outer wall of the rotating rod 303, a plurality of circular holes are circumferentially equidistantly arranged on the base 1, a threaded rod one 301 is movably connected in each of the plurality of circular holes, a driven gear 305 is fixedly connected to the outer wall of the plurality of threaded rods one 301, and the plurality of driven gears 305 are meshed with the driving gear 304.

[0031] REFERENCE Figure 1 ,Figure 2 and Figure 3 The inner wall of one side of each of the plurality of support rod frames 202 is fixedly connected with two limiting rods 203, each of the plurality of sliding rod frames 205 slides outside the corresponding two limiting rods 203, and the outside of each of the plurality of limiting rods 203 is surrounded by a spring one 204, one end of each of the plurality of spring ones 204 is fixedly connected to the corresponding support rod frame 202, and the other end is fixedly connected to the corresponding sliding rod frame 205.

[0032] Referring to Figure 1 , Figure 2 and Figure 3 The inner wall of one side of each of the plurality of support rod frames 202 is fixedly connected with a rack 206, and the plurality of support rod frames 202 are fixedly connected with a mounting frame 207, the plurality of mounting frames 207 are provided with a movable hole, the plurality of movable holes are movably connected with a rotating shaft 208, the outside of the plurality of rotating shafts 208 are fixedly connected with a locking gear 209, and the plurality of locking gears 209 are meshed with the corresponding rack 206.

[0033] Referring to Figure 1 , Figure 2 and Figure 3 The plurality of mounting frames 207 are fixedly connected with a fixed rod 210, the outside of the plurality of fixed rods 210 are movably connected with a sliding piece 212, one side of the plurality of sliding pieces 212 are fixedly connected with a locking gear ring 213, the plurality of locking gear rings 213 are meshed with the corresponding locking gear 209, and the outside of the plurality of fixed rods 210 are surrounded by a spring two 214, the plurality of mounting frames 207 are provided with a sliding groove, the plurality of sliding grooves are movably connected with a push button 211, and the plurality of push buttons 211 are fixedly connected with the corresponding sliding piece 212.

[0034] Referring to Figure 1 , Figure 2 and Figure 4 The end of each of the plurality of sliding rod frames 205 away from the support rod frame 202 is movably connected with a rotating piece 215 and two movable rods 216, the plurality of rotating pieces 215 are provided with a sliding groove and two anchor holes 217, the plurality of sliding grooves are movably connected with a sliding seat 218, the plurality of sliding seats 218 are movably connected with two movable cylinder pieces 220, the end of each of the plurality of movable rods 216 away from the sliding rod frame 205 slides on the inner wall of the corresponding movable cylinder piece 220, one side of each of the plurality of sliding seats 218 is fixedly connected with two spring rods 219, and the end of each of the plurality of spring rods 219 away from the sliding seat 218 is fixedly connected to the corresponding rotating piece 215.

[0035] In a specific application scenario, the sliding member 212 is driven by the push button 211 to disengage the locking tooth ring 213 from the locking gear 209, the spring 204 is elastically restored to push the sliding rod holder 205 to slide, and after extending to an appropriate length, the push button 211 is released, and the spring 214 is elastically restored to reengage the locking tooth ring 213 with the locking gear 209, thereby fixing the position of the sliding rod holder 205. By continuously adjusting the extension length of the sliding rod holder 205 in each direction, the base 1 and the sliding table 302 can be kept horizontal, so that the device can be conveniently reached and kept horizontal, ensuring the accuracy of laser detection, avoiding measurement errors caused by the inclination of the device, and improving the precision of wall crack width detection. In the event of vibration, the sliding seat 218 overcomes the elastic action of the spring rod 219 to slide, effectively reducing the interference of external vibration on the detection process, ensuring the accuracy and stability of laser detection, so that the device can still work stably in a vibrating environment such as a construction site, thereby expanding the application scenarios.

[0036] With reference to Figure 1 , Figure 5 and Figure 6 , the outside of the plurality of threaded rods one 301 is threadedly connected with the same sliding table 302, the sliding table 302 is fixedly connected with a fixed seat 310, the fixed seat 310 is movably connected with a movable seat 311, the outside of the movable seat 311 is fixedly connected with a transmission tooth ring 312, and the sliding table 302 is fixedly connected with a fixed frame 307, the fixed frame 307 is fixedly connected with a universal motor 308, the output end of the universal motor 308 is fixedly connected with a transmission gear 309, and the transmission gear 309 and the transmission tooth ring 312 are mutually engaged.

[0037] With reference to Figure 1 , Figure 5 and Figure 6 , the side of the movable seat 311 away from the fixed seat 310 is fixedly connected with a sliding rod member 314 and two electric telescopic rods 313, the sliding rod member 314 is slidably connected with two symmetric sliding frames 315, one end of the two sliding frames 315 is fixedly connected with the same fixed frame 316, and the driving ends of the two electric telescopic rods 313 are fixedly connected to the fixed frame 316.

[0038] With reference to Figure 1 , Figure 6 and Figure 7 , the inner wall of the fixed frame 316 is movably connected with a threaded rod two 319, the outside of the threaded rod two 319 is threadedly connected with a movable frame 321, the inner wall of the fixed frame 316 is fixedly connected with a long rod 318, the movable frame 321 slides on the outside of the long rod 318, the movable frame 321 is provided with a laser detector 322, the inside of the fixed frame 316 is fixedly connected with a servo motor 320, the output end of the servo motor 320 is fixedly connected to one end of the threaded rod two 319, and one side of the fixed frame 316 is fixedly connected with an image probe 317.

[0039] Referring to Figure 1 and Figure 5 The top of the base 1 is fixedly connected with a driving motor 306, and the output end of the driving motor 306 is fixedly connected to the rotating rod 303.

[0040] In a specific application scenario, the driving motor 306 meshes to drive the threaded rod one 301 to rotate, drives the sliding table 302 to an appropriate height, determines the position of the wall crack through the image probe 317, pushes the fixed frame 316 through the electric telescopic rod 313, pushes the laser detector 322 in the direction of the crack, the general motor 308 meshes the rotating movable seat 311 to adjust the angle of the fixed frame 316, and the servo motor 320 is started to rotate the threaded rod two 319 to drive the sliding frame 315 to drive the laser detector 322 to slide. Through the cooperation of multiple directions, the laser detector 322 can track and detect along the crack, avoiding the need to frequently move the device or manually adjust the position, and improving the detection efficiency and flexibility of the device.

[0041] The laser detection method for the crack width of the wall of the dangerous house uses the laser detection device for the crack width of the wall of the dangerous house as described above, and includes the following steps:

[0042] Step one, move the device to a specified position, rotate the support rod frame 202 to an appropriate angle, push the push button 211 to unlock the locking gear 209, the spring one 204 elastically restores to push the sliding rod frame 205 to extend to an appropriate length, adjust the extension length of the sliding rod frame 205 in each direction to keep the base 1 and the sliding table 302 horizontal, and then fix the rotating part 215 with the ground through the anchoring hole 217;

[0043] Step two, after the device adjustment and fixation are completed, the driving motor 306 drives the sliding table 302 to an appropriate height, determines the position of the wall crack through the image probe 317, pushes the laser detector 322 in the direction of the crack through the electric telescopic rod 313, adjusts the angle of the fixed frame 316 through the general motor 308, and drives the laser detector 322 to slide through the servo motor 320. Through the cooperation of multiple directions, the laser detector 322 can track and detect along the crack.

[0044] Working principle: move the device to the designated orientation, rotate the support rod frame 202 to the appropriate angle, then push the push button 211, so that the sliding member 212 compresses the spring 214, and the locking gear ring 213 drives the locking gear 209 to disengage, so that the locking gear 209 can rotate. At this time, the spring 204 restores its elasticity and pushes the sliding rod frame 205 to slide outside the limiting rod 203. When the sliding rod frame 205 extends to the appropriate length, release the push button 211, and the spring 214 restores its elasticity and pushes the sliding member 212, so that the locking gear ring 213 re-engages with the locking gear 209, limiting the rotation of the locking gear 209, so that the sliding rod frame 205 is fixed in position. By continuously adjusting the extension length of the sliding rod frame 205 in each direction, the base 1 and the sliding table 302 remain horizontal. Then, through the anchoring hole 217, the rotating member 215 is fixed to the ground. When encountering vibration, the sliding seat 218 overcomes the elastic action of the spring rod 219 to slide, ensuring the accuracy and stability of laser detection. After the device is adjusted and fixed, start the drive motor 306 to rotate the driving gear 304, which engages the driven gear 305 to rotate the threaded rod 301, driving the sliding table 302 to the appropriate height. Through the image probe 317, the position of the wall crack is determined, the electric telescopic rod 313 is started to push the fixed frame 316, the sliding frame 315 slides outside the sliding rod 314, and the laser detector 322 is pushed towards the crack. Start the universal motor 308 to rotate the transmission gear 309, which engages the transmission gear ring 312 to rotate the movable seat 311, adjusting the angle of the fixed frame 316. Start the servo motor 320 to rotate the threaded rod 319, which drives the sliding frame 315 and the laser detector 322 to slide. Through multi-directional cooperation, the laser detector 322 can track and detect along the crack, avoiding the need to frequently move the device or manually adjust the position, and improving the detection efficiency and flexibility of the device.

[0045] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacements or changes within the technical scope disclosed by the present application, according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A laser detection device for the width of cracks in the walls of dilapidated buildings, comprising a base (1), characterized in that, The base (1) is provided with a detection and adjustment module (3), and the top of the base (1) is fixedly connected with multiple circumferentially equidistant mounting frames (4). The multiple mounting frames (4) are provided with the same stable support module (2). The stable support module (2) includes multiple rotating frames (201). The multiple rotating frames (201) are all fixedly connected to one side of the outer wall of the corresponding mounting frame (4), and the multiple rotating frames (201) are all movably connected with support rods (202). The multiple support rods (202) are all slidably connected with sliding rods (205). The detection and adjustment module (3) includes a rotating rod (303). The rotating rod (303) is movably connected to the bottom inner wall of the base (1). The outer wall of the rotating rod (303) is fixedly connected to the driving gear (304). The base (1) has multiple circular holes equidistantly spaced around its circumference. Each of the multiple circular holes is movably connected to a threaded rod (301). The outer wall of each of the multiple threaded rods (301) is fixedly connected to a driven gear (305). The multiple driven gears (305) mesh with the driving gear (304). Each of the multiple support rod frames (202) has two limiting rods (203) fixedly connected to one side inner wall. The multiple sliding rod frames (205) slide outside the corresponding two limiting rods (203). 3) The exterior of each spring is surrounded by a spring (204). One end of each spring (204) is fixedly connected to a corresponding support rod (202), and the other end is fixedly connected to a corresponding sliding rod (205). A rack (206) is fixedly connected to one inner wall of each support rod (202), and a mounting bracket (207) is fixedly connected to each support rod (202). Each mounting bracket (207) has a movable hole, and a rotating shaft (208) is movably connected in each movable hole. A locking gear (209) is fixedly connected to the exterior of each rotating shaft (208), and each locking gear (209) is engaged with a corresponding gear. The bars (206) mesh with each other, and each of the mounting brackets (207) is fixedly connected with a fixing rod (210). Each of the fixing rods (210) is slidably connected with a sliding member (212). Each of the sliding members (212) is fixedly connected with a locking tooth ring (213) on one side. Each of the locking tooth rings (213) meshes with a corresponding locking gear (209). Each of the fixing rods (210) is surrounded by a spring (214). Each of the mounting brackets (207) has a sliding groove. Each of the sliding grooves is slidably connected with a push button (211). Each of the push buttons (211) is fixedly connected with a corresponding sliding member (212).

2. The laser detection device for the width of cracks in the walls of dilapidated buildings according to claim 1, characterized in that, Each of the multiple sliding rod frames (205) has a rotating component (215) and two movable rods (216) movably connected to one end away from the support rod frame (202). Each of the multiple rotating components (215) has a sliding groove and two anchor holes (217). Each of the multiple sliding grooves has a sliding seat (218) slidably connected to it. Each of the multiple sliding seats (218) has two movable cylinders (220) movably connected to it. Each of the multiple movable rods (216) has one end away from the sliding rod frame (205) sliding on the inner wall of the corresponding movable cylinder (220). Each of the multiple sliding seats (218) has two spring rods (219) fixedly connected to one side. Each of the multiple spring rods (219) has one end away from the sliding seat (218) fixedly connected to the corresponding rotating component (215).

3. The laser detection device for the width of cracks in the walls of dilapidated buildings according to claim 2, characterized in that, Multiple threaded rods (301) are externally connected to the same sliding table (302) by threads. A fixed seat (310) is fixedly connected to the sliding table (302). A movable seat (311) is movably connected to the fixed seat (310). A transmission gear ring (312) is fixedly connected to the outside of the movable seat (311). A fixed frame (307) is fixedly connected to the sliding table (302). A general-purpose motor (308) is fixedly connected to the fixed frame (307). A transmission gear (309) is fixedly connected to the output end of the general-purpose motor (308). The transmission gear (309) meshes with the transmission gear ring (312).

4. The laser detection device for the width of cracks in the walls of dilapidated buildings according to claim 3, characterized in that, The movable seat (311) is fixedly connected to a sliding rod (314) and two electric telescopic rods (313) on the side away from the fixed seat (310). The sliding rod (314) is slidably connected to two mutually symmetrical sliding frames (315). One end of the two sliding frames (315) is fixedly connected to the same fixed frame (316). The driving ends of the two electric telescopic rods (313) are fixedly connected to the fixed frame (316).

5. The laser detection device for the width of cracks in the walls of dilapidated buildings according to claim 4, characterized in that, The inner wall of the fixed frame (316) is movably connected to a threaded rod two (319), and the outside of the threaded rod two (319) is connected to a movable frame (321) by a thread. The inner wall of the fixed frame (316) is fixedly connected to a long rod (318), and the movable frame (321) slides outside the long rod (318). A laser detector (322) is provided on the movable frame (321), and a servo motor (320) is fixedly connected inside the fixed frame (316). The output end of the servo motor (320) is fixedly connected to one end of the threaded rod two (319), and an image probe (317) is fixedly connected to one side of the fixed frame (316).

6. The laser detection device for the width of cracks in the walls of dilapidated buildings according to claim 5, characterized in that, The top of the base (1) is fixedly connected to a drive motor (306), and the output end of the drive motor (306) is fixedly connected to the rotating rod (303).

7. A laser detection method for the width of cracks in the walls of dilapidated buildings, using the laser detection device for the width of cracks in the walls of dilapidated buildings as described in claim 6, characterized in that, Includes the following steps: Step 1: Move the device to the designated position, rotate the support rod (202) to the appropriate angle, and push the push button (211) to release the locking gear (209). The spring (204) elastically returns to its original position and pushes the sliding rod (205) to extend to the appropriate length. By continuously adjusting the extension length of the sliding rod (205) in each direction, keep the base (1) and the sliding table (302) horizontal. Then, fix the rotating part (215) to the ground through the anchor hole (217). Step 2: After the device is adjusted and fixed, the drive motor (306) drives the sliding table (302) to a suitable height. The location of the wall crack is determined by the image probe (317). The electric telescopic rod (313) pushes the laser detector (322) towards the crack. The general motor (308) adjusts the angle of the fixed frame (316). The servo motor (320) drives the laser detector (322) to slide. With the cooperation of multiple directions, the laser detector (322) tracks and detects along the crack.

Images