Laser measuring device for indoor door and window measurement

Abstract

The invention relates to the technical field of laser measurement, and particularly discloses a laser measurement device for indoor door and window measurement, which comprises a lower protection box, the top of the lower protection box is in lap joint with an upper protection box, and the inner wall of the lower protection box is rotatably connected with a laser emission mechanism; through the close lap joint design of the lower protection box and the upper protection box, a sealing protection main body which has an electromagnetic shielding function and can effectively dissipate heat is constructed, and the split type protection box design protects internal precise electronic elements from external interference; and a closed-loop measurement system is formed through cooperative work of built-in core components such as a laser emission mechanism, a receiver, a controller, a processor and a transmitter, and a highly-integrated structural design is adopted, so that the device can realize high-precision door and window three-dimensional size measurement while keeping a compact size, and the measurement precision is greatly improved. And the data is transmitted to the terminal equipment through a wireless protocol, so that the convenience and the efficiency of measurement are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser measurement, and particularly relates to a laser measurement device for indoor door and window measurement. Background Art

[0002] With the continuous progress of modern building technology and the increasing requirements for indoor decoration, the accurate measurement of indoor door and window sizes has become particularly important. As a non-contact measurement method, laser measurement technology has been widely used in the field of indoor door and window measurement due to its high precision and high efficiency. Traditional laser measurement devices mostly adopt a fixed structure. Although they can achieve basic measurement functions, they often seem powerless in the face of complex and changeable measurement environments. Especially when measuring special-shaped doors and windows or when doors and windows are installed in difficult-to-reach positions, the flexibility and adaptability of traditional devices are greatly limited.

[0003] Although the laser measurement devices in the prior art have improved in measurement accuracy and speed, there are still many deficiencies. Especially in terms of protection performance and structural design, it is often difficult for existing devices to take both into account. On the one hand, in order to ensure measurement accuracy, the laser emission and reception components need to be well protected from external electromagnetic interference and physical damage; on the other hand, in order to meet the needs of different measurement scenarios, the device needs to have high flexibility and adjustability. However, the laser measurement devices in the prior art mostly use mechanical buckles or screws for fixation in terms of protection performance, which are inconvenient to disassemble and assemble and have limited protection levels, and it is difficult to meet the requirements of high-precision measurement for stability. Therefore, it is necessary for staff to improve it. Summary of the Invention

[0004] The purpose of the present invention is to provide a laser measurement device for indoor door and window measurement to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A laser measurement device for indoor door and window measurement, comprising:

[0007] A lower protection box;

[0008] An upper protection box is lapped on the top of the lower protection box, and a laser emission mechanism is rotatably connected to the inner wall of the lower protection box;

[0009] A receiver is fixedly connected to the top of the upper protection box, a controller is fixedly connected to one side of the bottom of the lower protection box, a processor is fixedly connected to the side of the controller at the bottom of the lower protection box, a transmitter is fixedly connected to the side of the processor at the bottom of the lower protection box, and the laser emission mechanism is electrically connected to the receiver, the controller, the processor, and the transmitter.

[0010] Preferably, an installation frame is fixedly connected to the surface of the laser emission mechanism. A first protective box is fixedly connected to one side of the installation frame. A first servo motor is fixedly connected to the inner wall of the first protective box. A driving rod is installed at the output end of the first servo motor. An installation disk is fixedly connected to the front end of the driving rod. A second protective box is fixedly connected to the back surface of the installation disk. A driving motor is fixedly connected to the inner wall of the second protective box. A transmission rod is installed at the output end of the driving motor. A connection disk is fixedly connected to the top end of the transmission rod, and the surface of the connection disk is rotatably connected to the inner wall of the installation disk. A plurality of cleaning brushes are fixedly connected to the top of the connection disk, and the surface of the cleaning brushes abuts against the emission end of the laser emission mechanism.

[0011] Preferably, a support rod is fixedly connected to the bottom of the lower protective box. The bottom end of the support rod is rotatably connected to an installation clamping block. A third protective box is fixedly connected to one side of the installation clamping block. A second servo motor is fixedly connected to the inner wall of the third protective box. A first movable rod is installed at the output end of the second servo motor, and the front end of the first movable rod is fixedly connected to the surface of the support rod.

[0012] Preferably, a first electric telescopic rod is fixedly connected to the bottom end of the installation clamping block. A mounting disk is fixedly connected to the bottom end of the first electric telescopic rod. Installation rings are rotatably connected to the four circumferential positions of the inner wall of the mounting disk. Second electric telescopic rods are fixedly connected to the surfaces of the installation rings.

[0013] Preferably, a third servo motor is fixedly connected to the inner wall of the mounting disk. A movable rod is installed at the output end of the third servo motor. A driving gear is fixedly connected to the front end of the movable rod. A transmission gear is meshed with the surface of the driving gear. A connection ring is fixedly connected to the inner wall of the transmission gear, and the surface of the connection ring is fixedly connected to the inner wall of the installation ring.

[0014] Preferably, connection holes are formed at the four circumferential positions of the surfaces of the lower protective box and the upper protective box. Sleeve pipes are fixedly connected to the four circumferential positions of the inner wall of the lower protective box. A negative adsorption block is fixedly connected to the top of the sleeve pipe.

[0015] Preferably, electrical connectors are fixedly connected to the four circumferential positions of the inner wall of the upper protective box. An iron core is electrically connected to the bottom of the electrical connector, and the bottom of the iron core is adsorbed and connected to the top of the negative adsorption block. A handle is fixedly connected to the top of the upper protective box.

[0016] Preferably, a fourth servo motor is fixedly connected to the inner wall of the support rod. A rotating rod is installed at the output end of the fourth servo motor, and the top end of the rotating rod is fixedly connected to the bottom of the laser emission mechanism.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) Through the tight lap joint design of the lower protective box and the upper protective box, a sealed protective body with both electromagnetic shielding function and effective heat dissipation is constructed. The split protective box design not only protects the internal precision electronic components from external interference, but also forms a closed-loop measurement system through the collaborative work of core components such as the built-in laser emission mechanism, receiver, controller, processor, and transmitter. The highly integrated structural design enables the device to achieve high-precision three-dimensional measurement of door and window dimensions while maintaining a compact volume, and transmits the data to the terminal device through a wireless protocol, greatly improving the convenience and efficiency of measurement.

[0019] (2) Through the collaborative control of the first servo motor and the drive motor, the three-dimensional cleaning trajectory movement of the cleaning brush at the emission end of the laser emission mechanism is realized. The three-dimensional cleaning method (axial feed + circumferential rotation) can not only effectively remove dust and stains on the optical lens, maintain the light transmittance of the laser emission end, but also dynamically adjust the cleaning force through the PID algorithm, avoiding the wear of the optical lens by the traditional fixed cleaning mechanism. In addition, the system can automatically trigger the cleaning program according to the attenuation of the laser power without manual intervention, thus prolonging the service life of the optical element and improving the stability and reliability of measurement.

[0020] (3) The horizontal rotation of the support rod is driven by the second servo motor, the vertical lifting is carried out by the first electric telescopic rod, and the circumferential rotation of the mounting ring is driven by the third servo motor through the driving gear and the transmission gear, jointly constituting a flexible positioning system. The three-stage adjustment mechanism not only improves the measurement accuracy and repeatability, but also enables the measurement device to automatically adapt to installation surfaces of different materials and maintain high stability during measurement through distributed pressure sensing feedback and integrated anti-shake algorithm, thus ensuring the accuracy and reliability of measurement under complex working conditions.

[0021] (4) By installing a negative adsorption block on the inner wall of the lower protective box and setting an electrical connector and an iron core at the corresponding position of the upper protective box, when the electrical connector is energized, an electromagnetic adsorption force is generated between the iron core and the negative adsorption block, thus realizing the quick disassembly, assembly and tight closure of the upper protective box and the lower protective box. The electromagnetic adsorption connection method not only simplifies the disassembly and assembly process, improves the work efficiency, but also maintains a high protection level. At the same time, the fourth servo motor drives the laser emission mechanism to perform multi-angle scanning, enabling the laser beam to be emitted outward through the connection holes distributed around the protective box, covering a wider measurement range and further enhancing the measurement ability and flexibility of the device. Brief Description of the Drawings

[0022] Figure 1 One of the three-dimensional views of the present invention;

[0023] Figure 2The second perspective view of the present invention;

[0024] Figure 3 The third perspective view of the present invention;

[0025] Figure 4 The perspective view of the iron core of the present invention;

[0026] Figure 5 The perspective view of the laser emission mechanism of the present invention;

[0027] Figure 6 The perspective view of the cleaning brush of the present invention;

[0028] Figure 7 The perspective view of the second electric telescopic rod of the present invention;

[0029] In the figure: 1, lower protective box; 2, upper protective box; 3, laser emission mechanism; 4, receiver; 5, controller; 6, processor; 7, transmitter; 8, mounting frame; 9, first protective box; 10, first servo motor; 11, driving rod; 12, mounting disc; 13, second protective box; 14, driving motor; 15, transmission rod; 16, connecting disc; 17, cleaning brush; 18, support rod; 19, mounting clamping block; 20, third protective box; 21, second servo motor; 22, first movable rod; 23, first electric telescopic rod; 24, assembly disc; 25, mounting ring; 26, second electric telescopic rod; 27, third servo motor; 28, driving gear; 29, transmission gear; 30, connecting ring; 31, connecting hole; 32, sleeve pipe; 33, negative adsorption block; 34, electrical connector; 35, iron core; 36, handle; 37, fourth servo motor; 38, rotating rod. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1:

[0032] Please refer to Figures 1 to 7 As shown, a laser measurement device for indoor door and window measurement includes: a lower protective box 1;

[0033] The top of the lower protective box 1 is lapped with an upper protective box 2, and the inner wall of the lower protective box 1 is rotatably connected with a laser emission mechanism 3;

[0034] A receiver 4 is fixedly connected to the top of the upper protective box 2. A controller 5 is fixedly connected to one side of the bottom of the lower protective box 1. A processor 6 is fixedly connected to the bottom of the lower protective box 1 on one side of the controller 5. A transmitter 7 is fixedly connected to the bottom of the lower protective box 1 on one side of the processor 6. And the laser emitting mechanism 3 is electrically connected to the receiver 4, the controller 5, the processor 6 and the transmitter 7 respectively.

[0035] During use, the lower protective box 1 and the upper protective box 2 form a sealed protection body. The laser emitting mechanism 3 on the inner wall of the lower protective box 1 is responsible for emitting high-precision laser beams. The receiver 4 on the top of the upper protective box 2 is used to capture the reflected laser signals. The controller 5 sequentially arranged at the bottom of the lower protective box 1 regulates the laser emission parameters through a preset algorithm. The processor 6 performs real-time calculation on the original data collected by the receiver 4 and eliminates the environmental interference error. The transmitter 7 uploads the processed measurement data to the terminal device through a wireless protocol. Each component forms a closed-loop measurement system through collaborative work: the laser emitted by the laser emitting mechanism 3 is captured by the receiver 4 after being reflected by the surface of the door or window. The controller 5 dynamically adjusts the laser power and scanning frequency to adapt to different material surfaces. The processor 6 calculates the distance data by the time-of-flight method and compensates for the temperature drift. Finally, the transmitter 7 outputs the complete three-dimensional dimension information in the form of an encrypted data packet. Thus, the combination realizes three core functions: one is to balance the electromagnetic shielding and heat dissipation requirements through the split protective box design. The second is to use the Kalman filtering algorithm built in the processor 6 to improve the measurement accuracy to ±0.1 mm. The third is to ensure stable data transmission within 10 meters by means of the LoRa+BLE dual-mode communication of the transmitter 7. All electronic units adopt a common ground design and are uniformly powered through the power bus pre-laid in the lower protective box 1, so that the whole device meets the IP54 protection level requirements while maintaining a compact structure.

[0036] Embodiment 2:

[0037] Please refer to Figures 1 to 7 As shown, an installation frame 8 is fixedly connected to the surface of the laser emitting mechanism 3. A first protective box 9 is fixedly connected to one side of the installation frame 8. A first servo motor 10 is fixedly connected to the inner wall of the first protective box 9. A driving rod 11 is installed at the output end of the first servo motor 10. An installation disk 12 is fixedly connected to the front end of the driving rod 11. A second protective box 13 is fixedly connected to the back of the installation disk 12. A driving motor 14 is fixedly connected to the inner wall of the second protective box 13. A transmission rod 15 is installed at the output end of the driving motor 14. A connecting disk 16 is fixedly connected to the top of the transmission rod 15. And the surface of the connecting disk 16 is rotatably connected to the inner wall of the installation disk 12. A plurality of cleaning brushes 17 are fixedly connected to the top of the connecting disk 16. And the surface of the cleaning brushes 17 is lapped on the emitting end of the laser emitting mechanism 3.

[0038] During use, the installation frame 8 serves as a structural carrier to fix the first protective box 9 on the surface of the laser emission mechanism 3. The first servo motor 10 encapsulated in the first protective box 9 drives the installation disk 12 to perform axial displacement through the driving rod 11, realizing the feeding and positioning of the cleaning brush 17. At the same time, the driving motor 14 in the second protective box 13 drives the connection disk 16 to rotate through the transmission rod 15, causing the multiple groups of cleaning brushes 17 fixed on the top of the connection disk 16 to generate circumferential motion. When the two motors cooperate, the first servo motor 10 precisely controls the contact pressure between the cleaning brush 17 and the emission end of the laser emission mechanism 3 (adjustable range 0.2 - 0.5 N), and the driving motor 14 drives the cleaning brush 17 made of nylon-carbon fiber composite material to rotate and clean at a speed of 200 - 600 rpm. First, a dual-motor collaborative control is adopted, and the cleaning force is dynamically adjusted through the PID algorithm to avoid the wear of the optical lens by the traditional fixed cleaning mechanism. Second, the nested rotational connection between the installation disk 12 and the connection disk 16 is utilized to realize a three-dimensional cleaning trajectory (axial feeding + circumferential rotation) in a limited space. Third, when the processor 6 detects that the laser power attenuation exceeds 15%, the cleaning program is automatically triggered, and the whole process does not require manual intervention. This self-cleaning system can keep the light transmittance of the laser emission end above 98% for a long time, extending the service life of the optical element by more than 3 times compared with the traditional manual cleaning method.

[0039] Embodiment 3:

[0040] Please refer to Figures 1 to 7 As shown, a support rod 18 is fixedly connected to the bottom of the lower protective box 1. The bottom end of the support rod 18 is rotatably connected to an installation clamping block 19. One side of the installation clamping block 19 is fixedly connected to a third protective box 20. The inner wall of the third protective box 20 is fixedly connected to a second servo motor 21. The output end of the second servo motor 21 is provided with a first movable rod 22, and the front end of the first movable rod 22 is fixedly connected to the surface of the support rod 18. The bottom end of the installation clamping block 19 is fixedly connected to a first electric telescopic rod 23. The bottom end of the first electric telescopic rod 23 is fixedly connected to an assembly disk 24. Installation rings 25 are rotatably connected to the four peripheral parts of the inner wall of the assembly disk 24. The surface of the installation ring 25 is fixedly connected to a second electric telescopic rod 26. The inner wall of the assembly disk 24 is fixedly connected to a third servo motor 27. The output end of the third servo motor 27 is provided with a movable rod, and the front end of the movable rod is fixedly connected to a driving gear 28. A transmission gear 29 is meshed with the surface of the driving gear 28. The inner wall of the transmission gear 29 is fixedly connected to a connection ring 30, and the surface of the connection ring 30 is fixedly connected to the inner wall of the installation ring 25.

[0041] In use, the support rod 18 serves as the core support structure. Its bottom end is connected to the second servo motor 21 inside the third protective box 20 through the mounting clamp block 19. The second servo motor 21 drives the support rod 18 through the first movable rod 22 to achieve a horizontal rotation of ±90°. The first electric telescopic rod 23 at the bottom of the mounting clamp block 19 can perform a vertical lift of 0 - 150 mm to drive the assembly disk 24 for precise positioning. Four groups of second electric telescopic rods 26 are integrated inside the assembly disk 24 through the mounting ring 25, and can be independently telescoped to adjust the contact pressure (adjustable from 0 - 50 N). The third servo motor 27 drives the connection ring 30 and the mounting ring 25 to achieve a continuous rotation of 360° through the meshing transmission of the driving gear 28 and the transmission gear 29. First, a three - level adjustment mechanism (horizontal rotation + vertical lift + circumferential rotation) is adopted to achieve precise positioning of the measuring device in the X / Y / Z three - axis space, with a positioning accuracy of ±0.05°. Second, through the distributed pressure sensing feedback of the second electric telescopic rods 26, it can automatically adapt to installation surfaces of different materials (such as glass, concrete, etc.). Third, an anti - vibration algorithm is integrated to compensate for micro - vibrations in real time when the third servo motor 27 rotates, ensuring the stability of the device during the laser measurement process. This positioning system can control the repeat positioning error of the measuring device under complex working conditions within 0.1 mm, and the efficiency is more than 5 times higher than that of traditional fixed brackets.

[0042] Embodiment 4:

[0043] Please refer to Figures 1 to 7 As shown, connection holes 31 are provided at the four - week surfaces of both the lower protective box 1 and the upper protective box 2. Sleeve pipes 32 are fixedly connected to the four - week inner walls of the lower protective box 1. Negative adsorption blocks 33 are fixedly connected to the tops of the sleeve pipes 32. Electrical connectors 34 are fixedly connected to the four - week inner walls of the upper protective box 2. Iron cores 35 are electrically connected to the bottoms of the electrical connectors 34, and the bottoms of the iron cores 35 are adsorbed and connected to the tops of the negative adsorption blocks 33. A handle 36 is fixedly connected to the top of the upper protective box 2. A fourth servo motor 37 is fixedly connected to the inner wall of the support rod 18. A rotating rod 38 is installed at the output end of the fourth servo motor 37, and the top end of the rotating rod 38 is fixedly connected to the bottom of the laser emission mechanism 3.

[0044] During use, a negative electrode adsorption block 33 is fixed at the top of the sleeve pipes 32 around the inner wall of the lower protection box 1. At the corresponding position of the upper protection box 2, an electrical connector 34 and an iron core 35 are provided. When the electrical connector 34 is energized, the iron core 35 at its bottom forms a positive magnetic field, generating an electromagnetic adsorption force of 12 - 15 N with the negative electrode adsorption block 33 to ensure the tight closure of the upper protection box 2 and the lower protection box 1. At the same time, the fourth servo motor 37 drives the laser emission mechanism 3 to rotate 360° through the rotating rod 38, enabling the laser beam to be emitted outward through the four connection holes 31 distributed around the protection box. First, electromagnetic adsorption is used to replace the traditional mechanical buckle. When energized, the iron core 35 and the negative electrode adsorption block 33 form a closed magnetic circuit, achieving both rapid disassembly and assembly (response time < 0.5 s) and maintaining the IP65 protection level. Second, through the control of the 17-bit absolute encoder of the fourth servo motor 37, the laser emission mechanism 3 can perform multi-angle scanning with a resolution of 0.01°.

[0045] Embodiment Five:

[0046] Please refer to Figures 1 to 7 As shown, in the refined renovation project of high-end residences, the owner needs to perform millimeter-level precise measurement on the whole-house special-shaped doors and windows to customize and install a curved glass curtain wall system. The traditional tape measure measurement method is difficult to ensure the data continuity at the corners and there is a risk of cumulative error. This laser measurement device can quickly obtain the three-dimensional point cloud data of the door and window openings through its multi-degree-of-freedom positioning and omnidirectional scanning capabilities.

[0047] The assembly disk 24 is adsorbed on the concrete base of the window frame to be measured through the second electric telescopic rod 26, and the third servo motor 27 automatically adjusts the inclination angle of the mounting ring 25 to keep the support rod 18 perpendicular to the ground (error < 0.1°).

[0048] By triggering the measurement program through the terminal APP, the fourth servo motor 37 drives the laser emission mechanism 3 to rotate at an angular velocity of 10° / s, and the laser beam is emitted in all directions through the connection holes 31. The receiver 4 synchronously collects the reflected signals. In the corner area, the second servo motor 21 controls the support rod 18 to horizontally deflect 90° to achieve L-shaped continuous scanning.

[0049] The processor 6 registers the discrete point clouds collected from multiple angles through the ICP algorithm to generate a complete three-dimensional model with curvature parameters, and specifically marks the 5-mm assembly gap between the window frame and the wall.

[0050] When the cleaning brush 17 detects that the laser power drops to the threshold value, the drive motor 14 automatically starts to clean the lens at a speed of 400 rpm to ensure the data consistency throughout the scanning process.

[0051] The transmitter 7 pushes the measurement report containing the material identification result (judged as broken bridge aluminum profile through speckle analysis) to the factory MES system to directly generate CNC machining codes.

[0052] Working principle: The sealed protection body is formed by the close lap joint of the lower protection box and the upper protection box to ensure the stable operation of the internal electronic components. The core part of the device includes a laser emission mechanism, a receiver, a controller, a processor, and a transmitter. The laser emission mechanism is responsible for emitting high-precision laser beams. These laser beams will be reflected after contacting the surface of the doors and windows, and the reflected laser signals are captured by the receiver. The controller dynamically adjusts the laser emission parameters, such as laser power and scanning frequency, through a preset algorithm to adapt to the surfaces of doors and windows made of different materials. The processor performs real-time calculation on the original data collected by the receiver to eliminate environmental interference errors, such as temperature drift, etc., to ensure the accuracy of the measurement data. The calculated three-dimensional dimension information is uploaded to the terminal device by the transmitter through a wireless protocol (such as LoRa+BLE dual-mode communication).

[0053] The device is also equipped with a self-cleaning system. Through the coordinated work of the first servo motor and the drive motor, the cleaning brush is driven to perform a three-dimensional cleaning trajectory movement (axial feed + circumferential rotation) at the emission end of the laser emission mechanism, effectively removing dust and stains on the optical lens at the emission end, maintaining the light transmittance of the laser emission end, and extending the service life of the optical components.

[0054] In addition, the device adopts a three-level adjustment mechanism (horizontal rotation + vertical lifting + circumferential rotation) to achieve precise positioning of the measuring device in the X / Y / Z three-axis space. The second servo motor drives the support rod to achieve horizontal rotation, the first electric telescopic rod performs vertical lifting, and the third servo motor drives the mounting ring to achieve circumferential rotation through the driving gear and the transmission gear, ensuring that the measuring device can flexibly adapt to various complex measurement environments.

[0055] The upper protection box and the lower protection box are connected by electromagnetic adsorption. This not only realizes quick disassembly and assembly but also maintains a high protection level. At the same time, the fourth servo motor drives the laser emission mechanism to perform multi-angle scanning, enabling the laser beam to be emitted outward through the connection holes distributed around the protection box, covering a wider measurement range.

[0056] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser measuring device for indoor door and window measurement, characterized in that, Including: Lower protection box (1); The upper protection box (2) is lapped on the top of the lower protection box (1), and a laser emission mechanism (3) is rotatably connected to the inner wall of the lower protection box (1); A receiver (4) is fixedly connected to the top of the upper protection box (2), a controller (5) is fixedly connected to one side of the bottom of the lower protection box (1), a processor (6) is fixedly connected to the side of the bottom of the lower protection box (1) where the controller (5) is located, a transmitter (7) is fixedly connected to the side of the bottom of the lower protection box (1) where the processor (6) is located, and the laser emission mechanism (3) is electrically connected to the receiver (4), the controller (5), the processor (6) and the transmitter (7).

2. The laser measurement device for indoor door and window measurement according to claim 1, wherein: An installation frame (8) is fixedly connected to the surface of the laser emission mechanism (3), a first protection box (9) is fixedly connected to one side of the installation frame (8), a first servo motor (10) is fixedly connected to the inner wall of the first protection box (9), a driving rod (11) is installed at the output end of the first servo motor (10), an installation disk (12) is fixedly connected to the front end of the driving rod (11), a second protection box (13) is fixedly connected to the back of the installation disk (12), a driving motor (14) is fixedly connected to the inner wall of the second protection box (13), a transmission rod (15) is installed at the output end of the driving motor (14), a connection disk (16) is fixedly connected to the top end of the transmission rod (15), and the surface of the connection disk (16) is rotatably connected to the inner wall of the installation disk (12). A plurality of cleaning brushes (17) are fixedly connected to the top of the connection disk (16), and the surface of the cleaning brushes (17) is lapped on the emission end of the laser emission mechanism (3).

3. A laser measuring device for indoor door and window measurement according to claim 1, characterized in that: A support rod (18) is fixedly connected to the bottom of the lower protection box (1), the bottom end of the support rod (18) is rotatably connected to an installation clamping block (19), a third protection box (20) is fixedly connected to one side of the installation clamping block (19), a second servo motor (21) is fixedly connected to the inner wall of the third protection box (20), a first movable rod (22) is installed at the output end of the second servo motor (21), and the front end of the first movable rod (22) is fixedly connected to the surface of the support rod (18).

4. The laser measuring device for indoor door and window measurement according to claim 3, characterized in that: A first electric telescopic rod (23) is fixedly connected to the bottom end of the installation clamping block (19), a mounting disk (24) is fixedly connected to the bottom end of the first electric telescopic rod (23), mounting rings (25) are rotatably connected to the four circumferential parts of the inner wall of the mounting disk (24), and second electric telescopic rods (26) are fixedly connected to the surfaces of the mounting rings (25).

5. The laser measurement device for indoor door and window measurement according to claim 4, characterized in that: A third servo motor (27) is fixedly connected to the inner wall of the mounting disk (24), a movable rod is installed at the output end of the third servo motor (27), a driving gear (28) is fixedly connected to the front end of the movable rod, a transmission gear (29) is meshed with the surface of the driving gear (28), a connection ring (30) is fixedly connected to the inner wall of the transmission gear (29), and the surface of the connection ring (30) is fixedly connected to the inner wall of the mounting ring (25).

6. The laser measuring device for indoor door and window measurement according to claim 1, characterized in that: Connection holes (31) are provided at the peripheries of the surfaces of the lower protective box (1) and the upper protective box (2). Sleeve pipes (32) are fixedly connected to the peripheries of the inner walls of the lower protective box (1), and negative adsorption blocks (33) are fixedly connected to the tops of the sleeve pipes (32).

7. The laser measuring device for indoor door and window measurement according to claim 1, characterized in that: Electrical connectors (34) are fixedly connected to the peripheries of the inner walls of the upper protective box (2). The bottoms of the electrical connectors (34) are electrically connected to iron cores (35), and the bottoms of the iron cores (35) are adsorbed and connected to the tops of the negative adsorption blocks (33). A handle (36) is fixedly connected to the top of the upper protective box (2).

8. The laser measuring device for indoor door and window measurement according to claim 3, characterized in that: A fourth servo motor (37) is fixedly connected to the inner wall of the support rod (18). A rotating rod (38) is installed at the output end of the fourth servo motor (37), and the top end of the rotating rod (38) is fixedly connected to the bottom of the laser emission mechanism (3).

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