A corrugated ceiling linear scanning device

Abstract

The utility model relates to related technical field of building decoration engineering detection especially, a kind of corrugated ceiling linear scanning device, including three-dimensional laser scanner;Adjusting unit, the adjusting unit includes bottom plate, adjusting assembly, moving wheel;Guide rail.The utility model can be adjusted to the height and elevation variation of three-dimensional laser scanner, can ensure that the laser beam emitted by three-dimensional laser scanner can be accurately irradiated to ceiling surface under different angles, avoid the area of blind area or scanning not to be reached.The proper elevation and height adjustment can ensure that scanner can cover the linear shape of entire corrugated ceiling, obtain more complete three-dimensional data;Make three-dimensional laser scanner move along guide rail, to realize that three-dimensional laser scanner is operated in the linear scanning range expansion of corrugated ceiling in room, ensure that each part of ceiling is scanned, help it to capture complete three-dimensional data from different angles, avoid missing some areas.

Description

Technical Field

[0001] This utility model relates to the technical field of building decoration engineering testing, and in particular to a corrugated ceiling linear scanning device. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] In architectural decoration projects, corrugated ceilings are widely used due to their unique shape and aesthetic appeal. However, as a common decorative ceiling type, corrugated ceilings are typically composed of multiple curved, wavy surfaces, resulting in complex and irregular shapes. This makes it difficult to efficiently and accurately measure the linearity of corrugated ceilings using traditional manual measurement methods. Due to the variations in the ceiling's curves and height, conventional measuring tools (such as laser rangefinders and plumb lines) are prone to errors or omissions during measurement, making it difficult to accurately capture the overall shape of the ceiling surface. Furthermore, fixed-position equipment cannot cover every corner of the ceiling, leading to missing data in certain areas. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a corrugated ceiling linear scanning device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a corrugated ceiling linear scanning device, comprising a three-dimensional laser scanner for scanning the linear features of the corrugated ceiling;

[0006] An adjustment unit, comprising a base plate and an adjustment assembly disposed on the base plate for adjusting and supporting the scanning angle of the three-dimensional laser scanner, wherein two movable wheels are provided at the bottom of the base plate along the length direction of the base plate;

[0007] A guide rail, disposed on the underside of the base plate and used in conjunction with the movable wheels, is used to support the 3D laser scanner fixed on the adjustment unit to move along the guide rail.

[0008] Furthermore, the adjustment assembly includes two support seats symmetrically arranged along the width direction of the base plate, side plates rotatably mounted on the support seats, and a horizontal support plate horizontally mounted at one end of the two side plates away from the support seats. The three-dimensional laser scanner is detachably mounted on the upper part of the support plate. End plates adapted to move inside the side plates are provided at both ends of the support plate. A rotating sleeve is provided between the two end plates. A first rotating shaft driven by motor a is fixed through the end face of the rotating sleeve. A movable block is rotatably mounted on the outer end of one end plate. A lead screw driven by motor b is grooved on the movable block.

[0009] Furthermore, the side plate is rotatably connected to the support base, and a second rotating shaft is provided at the connection position on the support base;

[0010] The adjustment unit further includes:

[0011] The power mechanism is located outside the second rotating shaft on one side and connected to the second rotating shaft. The power mechanism includes a first pulley disposed on the second rotating shaft and a transmission belt wound around the outside of the first pulley. A second pulley is disposed at one end of the transmission belt away from the first pulley. A power shaft driven by a motor c is fixed to the end face of the second pulley.

[0012] Furthermore, it also includes: a motion drive unit located at the bottom of the base plate and connected to one of the motion wheels.

[0013] Furthermore, a movable support is provided at the bottom of the guide rail.

[0014] Furthermore, a fixing block is rotatably provided at the bottom of the transfer frame, and a rotating ring is provided with a slot on the fixing block. A rotating column fixed to the bottom surface of the transfer frame is rotatably adapted to the rotating ring.

[0015] Furthermore, the bottom surface of the guide rail has slots at both ends along its length, and support pads are provided through electric telescopic rods.

[0016] The beneficial effects of this utility model are reflected in:

[0017] This invention, due to the adjustment unit, allows for the adjustment of the height and elevation angle of the 3D laser scanner. This ensures that the laser beam emitted by the scanner accurately illuminates the ceiling surface at different angles, avoiding blind spots or areas that cannot be scanned. Appropriate elevation and height adjustments ensure that the scanner can cover the entire linear shape of the corrugated ceiling, obtaining more complete 3D data. Furthermore, the guide rail allows the 3D laser scanner to move along it, expanding the scanning range of the corrugated ceiling indoors. This ensures that every part of the ceiling is scanned, helping it capture complete 3D data from different angles and avoiding missing any areas. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overall structure of an embodiment of the present utility model.

[0019] Figure 2 This is a frontal plan view of the overall structure of an embodiment of the present invention;

[0020] Figure 3 This is a frontal plan view of the overall structure of an embodiment of the present utility model from another perspective.

[0021] Figure 4 This is a side view of the overall structure of an embodiment of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the guide rail from an exploded perspective, according to an embodiment of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the guide rail from another exploded perspective, representing an embodiment of the present invention.

[0024] In the picture:

[0025] 10. 3D laser scanner; 20. Adjustment unit; 21. Base plate; 22. Adjustment assembly; 221. Support base; 222. Side plate; 223. Support cross plate; 224. End plate; 225. Rotating sleeve; 226. First rotating shaft; 227. Lead screw; 228. Second rotating shaft; 23. Moving wheel; 24. Power mechanism; 241. First pulley; 242. Transmission belt; 243. Second pulley; 244. Power shaft; 30. Guide rail; 40. Shifting frame; 50. Fixing block; 60. Rotating ring; 70. Rotating column; 80. Support pad. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figure 1-6 This utility model discloses a corrugated ceiling linear scanning device, including a three-dimensional laser scanner 10 for scanning the linear features of the corrugated ceiling;

[0028] The adjustment unit 20 includes a base plate 21 and an adjustment component 22 disposed on the base plate 21 for adjusting and supporting the scanning angle of the three-dimensional laser scanner 10. Two moving wheels 23 are provided at the bottom of the base plate 21 along the length direction of the base plate 21.

[0029] The guide rail 30 is disposed on the lower side of the base plate 21 and works in conjunction with the moving wheel 23 to support the three-dimensional laser scanner 10 fixed on the adjustment unit 20 to move along the guide rail 30.

[0030] In practice, guide rails 30 are arranged at the construction site, and then the adjustment unit 20, which is fixed with the 3D laser scanner 10, is adapted to the guide rails 30 via its included moving wheels 23. The 3D laser scanner 10 can move along the guide rails 30 to expand the linear scanning range of the corrugated ceiling indoors, ensuring that every part of the ceiling is scanned. Since ceilings are usually large and have complex corrugated shapes, the movement of the scanner helps it capture complete 3D data from different angles, avoiding missing any areas.

[0031] The adjustment unit 20 includes a base plate 21 and an adjustment assembly 22 mounted on the base plate 21. The adjustment assembly 22 allows for adjustment of the height and elevation angle of the 3D laser scanner 10, ensuring that the laser beam emitted by the scanner accurately illuminates the ceiling surface at different angles, avoiding blind spots or unscanned areas. Appropriate elevation and height adjustments ensure that the scanner can cover the entire linear shape of the corrugated ceiling, obtaining more complete 3D data.

[0032] It should be noted that the method for detecting the linear shape of a corrugated ceiling using a 3D laser scanner 10 specifically includes the following steps:

[0033] S1, Data Acquisition:

[0034] The corrugated ceiling is scanned using a 3D laser scanner 10. During the scan, the scanning spacing and angle are adjusted and determined according to the on-site conditions using an adjustment unit 20 to ensure that complete 3D point cloud data of the ceiling is obtained.

[0035] Note that during the scanning process, you should avoid obstacles to ensure the accuracy of the scanned data.

[0036] S2, Data Preprocessing:

[0037] The collected point cloud data is denoised by using filtering algorithms to remove noise and outliers, and smoothing the data to improve its quality. The specific methods are as follows:

[0038] S2.1, Gaussian filtering algorithm is used to denoise the data. Appropriate filtering parameters are set to remove noise points;

[0039] S2.2, the denoised data is smoothed by using the moving least squares method to fit the data, making the point cloud data smoother.

[0040] S3, Feature Extraction:

[0041] The linear features of the corrugated ceiling, including crests, troughs, and wave distance, are extracted from the preprocessed point cloud. The specific method is as follows:

[0042] S3.1, perform gridding processing on the smoothed point cloud data to convert the point cloud data into a grid model;

[0043] S3.2 Analyze the mesh model, extract the positions of the peaks and troughs, and calculate the wave distance.

[0044] S4, Data Comparison:

[0045] The extracted linear features are compared with the standard linear features in the design drawings, and the deviation value is calculated. The specific method is as follows:

[0046] S4.1, Match the extracted peaks, troughs and wave distances with the standard line shape to determine the corresponding points;

[0047] S4.2 Calculate the deviation between corresponding points, including horizontal and vertical deviations.

[0048] S5, Result Evaluation:

[0049] The linear quality of the corrugated ceiling is evaluated based on the deviation value to determine whether it meets the design requirements. If the deviation value is within the allowable range, the linear quality of the corrugated ceiling is considered acceptable; if the deviation value exceeds the allowable range, rectification is required.

[0050] In one embodiment, the adjustment assembly 22 includes two support seats 221 symmetrically arranged along the width direction of the base plate 21, and side plates 222 rotatably mounted on the support seats 221. A horizontal support plate 223 is horizontally arranged on one end of the two side plates 222 away from the support seats 221. The three-dimensional laser scanner 10 is detachably mounted on the upper part of the support plate 223. End plates 224 adapted to move inside the side plates 222 are provided at both ends of the support plate 223. A rotating sleeve 225 is provided between the two end plates 224. A first rotating shaft 226 driven by a motor a is fixedly inserted through the end face of the rotating sleeve 225. A movable block is rotatably arranged on the outer end of one end plate 224. A lead screw 227 driven by a motor b is grooved on the movable block. This design, through two symmetrically welded support seats 221 along the width direction on the base plate 21, and the side plates 222 rotatably connected to the end faces of the corresponding support seats 221 by using a second rotating shaft 228, and through the rotational force applied by the power mechanism 24 connected to the second rotating shaft 228, can drive the three-dimensional laser scanner 10 connected to the support horizontal plate 223 on the side plate 222 and the side plate 221 to be rotatably mounted on the outside of the support seat 221 to be vertically raised relative to the plane of the base plate 21, so that the three-dimensional laser scanner 10 is 1.5~2.5m away from the ceiling (point spacing ≤1mm), ensuring high-precision scanning at close range;

[0051] The side plate 222 also uses a first rotating shaft 226 driven by motor a, and a rotating sleeve 225 sleeved outside the first rotating shaft 226. Under the action of motor a, the first rotating shaft 226 drives the three-dimensional laser scanner 10 mounted on the support horizontal plate 223 welded to the two end plates 224 on the rotating sleeve 225 to change the elevation angle, so that the scanner elevation angle is 70°~90° (vertically upward), reducing projection distortion and improving vertical accuracy.

[0052] Furthermore, the movable block connected to the external thread of the lead screw 227 driven by motor b, and the end plate 224 rotatably connected to the slotted movable block, cause the motor b to start and drive the lead screw 227 to rotate. This allows the end plate 224 rotatably connected to the movable block connected to the external thread of the lead screw 227 to move linearly along the side plate 222 under the limitation of the side plate 222, thereby performing compensation and correction. This, together with the motor a and the power mechanism 24, meets the adjustment requirements for appropriate height and elevation angle, ensuring that the scanner can cover the entire linear shape of the corrugated ceiling and obtain complete three-dimensional data.

[0053] In one embodiment, the side plate 222 is rotatably connected to the support base 221, and a second rotating shaft 228 is provided at the connection position on the support base 221;

[0054] The adjustment unit 20 further includes:

[0055] The power mechanism 24 is located outside the second rotating shaft 228 on one side and is connected to the second rotating shaft 228. The power mechanism 24 includes a first pulley 241 disposed on the second rotating shaft 228 and a transmission belt 242 wound around the outside of the first pulley 241. A second pulley 243 is disposed at one end of the transmission belt 242 away from the first pulley 241. A power shaft 244 driven by a motor c is fixed to the end face of the second pulley 243. This design, through the second rotating shaft 228 installed at the rotatable connection position on the support base 221 and the side plate 222, and the power mechanism 24 installed at the outer end of the second rotating shaft 228 on one side, wherein the power mechanism 24 includes a first pulley 241 sleeved on the outer end of the second rotating shaft 228 and a second pulley 243 sleeved on the outside of the power shaft 244 connected to the motor c by a coupling, and a transmission belt 242 wound around the first pulley 241 and the second pulley 243, can transmit the driving force of the motor c through the cooperation of the first pulley 241, the transmission belt 242 and the second pulley 243, and drive the side plate 222 to rotate around the second rotating shaft 228, which can raise the height of the three-dimensional laser scanner 10 installed on the side plate 222 relative to the base plate 21, change the vertical distance with the ceiling, and meet the scanning height requirements of the corrugated ceiling in actual operation.

[0056] It should be noted that the motor c is equipped with a limit locking structure, which can fix the side plate 222 supporting the 3D laser scanner 10 in a certain position after adjustment.

[0057] In one embodiment, it further includes a motion drive unit located at the bottom of the base plate 21 and connected to one of the movable wheels 23. This design allows the movable wheel 23 to be driven to move by the motion drive unit mounted at the bottom of the base plate 21 and connected to one of the movable wheels 23, thereby enabling the adjustment unit 20, on which the 3D laser scanner 10 is mounted, to move on the guide rail 30, thus allowing the 3D laser scanner 10 to perform expanded linear scanning of the corrugated ceiling indoors.

[0058] It should be noted that the moving drive unit adopts a structure including but not limited to a rotating motor.

[0059] In one embodiment, a movable frame 40 is provided at the bottom of the guide rail 30. This design, by using the movable frame 40, which is slotted and positioned at the bottom of the guide rail 30, allows the axis of rotation of the guide rail 30 to be determined relative to the movable guide rail 30 during scanning. The guide rail 30 can be arranged according to the linear orientation of the corrugated ceiling, facilitating the subsequent movement adjustment unit 20 to mount the 3D laser scanner 10, enabling it to capture complete 3D data from different angles.

[0060] In one embodiment, a fixing block 50 is rotatably mounted on the bottom of the movable frame 40. A rotating ring 60 is slotted on the fixing block 50, and a rotating column 70 fixed to the bottom surface of the movable frame 40 is rotatably fitted inside the rotating ring 60. This design, through the rotating column 70 welded to the bottom surface of the movable frame 40 and the rotating ring 60 installed in the slot on the fixing block 50, allows the guide rail 30 mounted on the movable frame 40 to perform horizontal circular motion around the axis of the rotating column 70, thereby changing the direction of the guide rail 30 and conforming to the scanning requirements of the corrugated ceiling lines.

[0061] In one embodiment, the bottom surface of the guide rail 30 has slots at both ends along its length, and support blocks 80 are provided via electric telescopic rods (not shown in the figure). This design allows the support blocks 80, installed via electric telescopic rods and slots at both ends of the bottom surface of the guide rail 30, to support the guide rail 30 vertically, moving it away from or close to the ground. Moving the support blocks 80 downwards ensures the stability of the guide rail 30 on an indoor surface, while moving the support blocks 80 upwards allows the guide rail 30 to rotate around the axis of the rotating column 70, changing its position and state.

[0062] The starting and stopping control methods and timing of the motor mentioned in this article are automatically controlled by a controller. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, since this application is mainly used to protect mechanical structures, this application will not explain the control method and circuit connection in detail.

[0063] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0064] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0065] Additionally, "multiple" refers to two or more.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A linear scanning device for corrugated ceilings, characterized in that, Includes a three-dimensional laser scanner (10) for scanning the linear features of corrugated ceilings; The adjustment unit (20) includes a base plate (21) and an adjustment component (22) disposed on the base plate (21) and used to adjust and support the scanning angle of the three-dimensional laser scanner (10). Two moving wheels (23) are provided at the bottom of the base plate (21) along the length direction of the base plate (21). The guide rail (30) is located on the lower side of the base plate (21) and works in conjunction with the moving wheel (23) to support the three-dimensional laser scanner (10) fixed on the adjustment unit (20) to move along the guide rail (30).

2. The corrugated ceiling linear scanning device according to claim 1, characterized in that: The adjustment assembly (22) includes two support seats (221) symmetrically arranged along the width direction of the base plate (21) and a side plate (222) rotatably arranged on the support seats (221). A support plate (223) is horizontally arranged on one end of the two side plates (222) away from the support seats (221). The three-dimensional laser scanner (10) is detachably arranged on the upper part of the support plate (223). The two ends of the support plate (223) are provided with end plates (224) adapted to move inside the side plates (222). A rotating sleeve (225) is provided between the two end plates (224). A first rotating shaft (226) driven by a motor a is fixed through the end face of the rotating sleeve (225). A movable block is rotatably arranged on the outer end of one end plate (224). A screw rod (227) driven by a motor b is grooved on the movable block.

3. The corrugated ceiling linear scanning device according to claim 2, characterized in that: The side plate (222) is rotatably connected to the support base (221), and a second rotating shaft (228) is provided at the connection position on the support base (221). The adjustment unit (20) further includes: The power mechanism (24) is located outside the second rotating shaft (228) on one side and connected to the second rotating shaft (228). The power mechanism (24) includes a first pulley (241) disposed on the second rotating shaft (228) and a transmission belt (242) wound around the outside of the first pulley (241). A second pulley (243) is disposed at one end of the transmission belt (242) away from the first pulley (241). A power shaft (244) driven by a motor c is fixed to the end face of the second pulley (243).

4. The corrugated ceiling linear scanning device according to claim 1, characterized in that, Also includes: The moving drive unit is located at the bottom of the base plate (21) and connected to one of the moving wheels (23).

5. The corrugated ceiling linear scanning device according to claim 1, characterized in that: The bottom of the guide rail (30) is provided with a movable frame (40).

6. The corrugated ceiling linear scanning device according to claim 5, characterized in that: The bottom of the moving frame (40) is provided with a fixed block (50) that rotates relative to the bottom. The fixed block (50) has a slotted ring (60) and a rotating column (70) is provided inside the rotating ring (60) that is rotatably adapted to the bottom surface of the moving frame (40).

7. The corrugated ceiling linear scanning device according to claim 6, characterized in that: The bottom surface of the guide rail (30) has slots at both ends along its length, and support pads (80) are provided by electric telescopic rods.

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