A portable 3D laser scanning measuring instrument

Abstract

This invention discloses a portable three-dimensional laser scanning measuring instrument, relating to the field of optical scanning technology. It includes a housing, with a three-dimensional scanner housed inside the top of the housing and extending beyond the top of the housing. A laser transceiver port is located on one side of the three-dimensional scanner, and a protective mechanism is provided on the outer wall of the scanner. By incorporating the three-dimensional scanner, when the housing is used in outdoor construction areas or field experiments, and encounters ground with varying flatness for three-dimensional scanning, the housing and the three-dimensional scanner will develop a certain tilt angle. If the three-dimensional scanner tilts, causing the laser transceiver port on one side to rise, rainwater and moisture can easily fall directly into the laser transceiver port, affecting the scanning and detection process.

Description

Technical Field

[0001] This invention relates to the field of optical scanning technology, specifically to a portable three-dimensional laser scanning measuring instrument. Background Technology

[0002] 3D scanning is a high-tech technology that integrates optics, mechanics, electronics and computer technology. It is mainly used to scan the spatial shape, structure and color of objects in order to obtain the spatial coordinates of the object's surface.

[0003] The scanning strip and plate thickness profile measuring instrument described in the patent application with publication number CN108534691A includes probes arranged above and below the strip being measured, and the probes are arranged in pairs; during measurement, the probes move along a preset trajectory at their own height, and the perpendicular intersection point of each pair of probes with the central axis plane of the strip thickness is always the same point.

[0004] When 3D laser scanners are used outdoors, rainwater can easily adhere to them during rainy weather, causing errors in information reception due to refraction from the water droplets. Furthermore, when 3D laser scanners are used in outdoor construction areas or field experiments, they may be placed on surfaces with varying degrees of flatness for 3D scanning. This can cause the scanner to tilt, raising the internal laser receiving port. As a result, rainwater, water vapor, and sand from the air can fall directly into the port, affecting the scanning and detection process. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a portable three-dimensional laser scanning measuring instrument, thereby solving the aforementioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable three-dimensional laser scanning measuring instrument, comprising a housing, a three-dimensional scanner disposed inside the top of the housing, the three-dimensional scanner extending out of the top of the housing, a laser transceiver port disposed on one side of the three-dimensional scanner, and a protective mechanism disposed on the outer wall of the three-dimensional scanner;

[0007] The protective mechanism includes:

[0008] The top cover is a circular disc-shaped structure, and a sliding strip is fixedly connected to the outer wall of the top cover. The sliding strip is a circular ring structure. The top cover is used to protect the top of the 3D scanner.

[0009] The sliding block is an arc-shaped block structure. The sliding block is slidably connected to the outer wall of the slide bar. A telescopic rod is provided above the sliding block. A telescopic protective plate is fixedly connected to one side of the top cover. The telescopic protective plate is used to protect the laser transceiver port.

[0010] Preferably, a counterweight is fixedly connected to the outer wall of the sliding block, the counterweight serving to counterweight the sliding block, and a stop block is fixedly connected to the side of the top cover away from the telescopic protective plate.

[0011] Preferably, a connecting rod is fixedly connected to the top of the sliding block, and a rotating ball is rotatably connected to the top of the connecting rod. There are two rotating balls, and a telescopic rod is fixedly connected between the two rotating balls. The telescopic rod has a built-in spring inside.

[0012] Preferably, a connecting pipe is fixedly connected to the outer wall of the sliding block, a fixed block is fixedly connected to one end of the connecting pipe, and one side of the fixed block is fixedly connected to one side of the telescopic protective plate.

[0013] Preferably, the telescopic rod is connected to the inside of the connecting pipe via a sliding block, and the inside of the connecting pipe is connected to the inside of the telescopic protective plate via a fixing block.

[0014] Preferably, the top of the 3D scanner is provided with a closing mechanism, the closing mechanism including a bottom ring, the bottom of the bottom ring being fixedly connected to the top of the 3D scanner, a telescopic closing plate being fixedly connected to the top of the bottom ring, and a first magnetic plate being fixedly connected to one side of the telescopic closing plate.

[0015] Preferably, an elastic rope is fixedly connected to the top of the first magnetic plate, one end of which is fixedly connected to the center of one side of the telescopic protective plate. There are two first magnetic plates, and the magnetic poles of the two first magnetic plates are attracted to each other when they are close to each other.

[0016] Preferably, a magnetic strip is fixedly connected to one side of the first magnetic plate, one end of the magnetic strip is in contact with a second magnetic plate, the bottom of the second magnetic plate is fixedly connected to the bottom of the telescopic closing plate, and the sides of the second magnetic plate and the magnetic strip that are close to each other are magnetic and attract each other with opposite poles.

[0017] This invention provides a portable three-dimensional laser scanning measuring instrument. It has the following advantages:

[0018] 1. By setting up a three-dimensional scanner, when the shell needs to be used in outdoor construction areas or field experiments, it will encounter ground with different flatness for three-dimensional scanning. The shell and the three-dimensional scanner will have a certain tilt angle. Once the three-dimensional scanner tilts, causing the laser transceiver port on one side of the three-dimensional scanner to rise, rainwater and water vapor can easily fall directly into the laser transceiver port, causing the scanning detection to be affected.

[0019] 2. By setting up a three-dimensional scanner, the extension distance of the telescopic protective plate can be adaptively adjusted according to the tilt angle between the three-dimensional scanner and the laser transceiver port. The higher the laser transceiver port is raised, the longer the telescopic protective plate extends to protect the inside of the laser transceiver port, preventing rainwater or sand and dust from falling into it and affecting the scanning accuracy. When the ground is flat, the telescopic protective plate retracts to the maximum extent, so as not to occupy too much area and to ensure that the laser transceiver port can maximize its scanning range.

[0020] 3. By setting up a three-dimensional scanner, the telescopic protective plate will not be pushed by the liquid inside the telescopic rod to extend and block the laser transceiver. The mechanism can accurately identify whether there is an upward tilt between the laser transceiver and the three-dimensional scanner, and use the extension of the telescopic protective plate in real time to ensure the protection of the laser transceiver. The tilt to the left or right will not affect the telescopic protective plate, so that the telescopic protective plate will still retract, ensuring the most efficient working environment for the laser transceiver.

[0021] 4. By setting up a three-dimensional scanner, the built-in spring inside the telescopic rod deforms more, thereby pushing out more liquid and extending the telescopic protective plate. This invention enables the telescopic protective plate to be moved and pushed linearly with the tilt angle of the laser transceiver port, which is more precise and avoids step-like movement.

[0022] 5. This invention, by setting a closing mechanism, directly closes the opening of the laser transceiver port, which not only protects the laser transceiver port but also reminds the staff that the operation is not appropriate, thus avoiding accidents caused by operational errors. It can also ensure that if the laser transceiver port is placed crookedly and slips and falls, the telescopic closing plate will automatically close the opening of the laser transceiver port to prevent stones and dust from falling into the laser transceiver port. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the 3D scanner of the present invention. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the structure of the 3D scanner of the present invention. Figure 2 ;

[0026] Figure 4 This is a schematic diagram of the structure of the 3D scanner of the present invention. Figure 3 ;

[0027] Figure 5 For the present invention Figure 4 Enlarged view of point A;

[0028] Figure 6This is a schematic diagram of the structural motion of the 3D scanner of the present invention. Figure 1 ;

[0029] Figure 7 This is a schematic diagram of the structural motion of the 3D scanner of the present invention. Figure 2 ;

[0030] Figure 8 This is a schematic diagram of the closing mechanism of the present invention;

[0031] Figure 9 For the present invention Figure 4 Enlarged view of point B;

[0032] Figure 10 This is a schematic diagram of the telescopic closing plate of the present invention.

[0033] In the diagram: 1 Laser transceiver port, 2 3D scanner, 3 Protective mechanism, 301 Top cover, 302 Sliding bar, 303 Sliding block, 304 Counterweight, 305 Stop block, 306 Connecting rod, 307 Rotating ball, 308 Telescopic rod, 309 Connecting pipe, 310 Fixing block, 311 Telescopic protective plate, 4 Closing mechanism, 401 Telescopic closing plate, 402 First magnetic plate, 403 Elastic rope, 404 Magnetic strip, 405 Second magnetic plate, 406 Bottom ring, 5 Outer shell. Detailed Implementation

[0034] Example 1: Please refer to Figure 1-3 The present invention provides a technical solution: a portable three-dimensional laser scanning measuring instrument, including a shell 5, a three-dimensional scanner 2 is provided inside the top of the shell 5, the three-dimensional scanner 2 extends out of the top of the shell 5, a laser transceiver port 1 is provided on one side of the three-dimensional scanner 2, and a protective mechanism 3 is provided on the outer wall of the three-dimensional scanner 2.

[0035] Protective mechanism 3 includes:

[0036] The top cover 301 is a circular disc-shaped structure. A sliding strip 302 is fixedly connected to the outer wall of the top cover 301. The sliding strip 302 is a circular ring structure. The top cover 301 is used to protect the top of the three-dimensional scanner 2.

[0037] Sliding block 303 is an arc-shaped block structure. Sliding block 303 is slidably connected to the outer wall of sliding strip 302. A telescopic rod 308 is provided above sliding block 303. A telescopic protective plate 311 is fixedly connected to one side of top cover 301. The telescopic protective plate 311 is used to protect the laser transceiver port 1.

[0038] When in use, place the outer casing 5 on the place where three-dimensional laser scanning is required, and then start the three-dimensional scanner 2 that extends out of the three-dimensional scanner 2. Receive the laser information emitted from the outside through the laser transceiver port 1 on one side of the three-dimensional scanner 2, record the information, and complete the three-dimensional laser scanning work.

[0039] When it rains, rainwater tends to adhere to the laser transceiver port 1, causing errors in information reception due to the refraction of water droplets. Furthermore, when the housing 5 is used in outdoor construction areas or field experiments, it may encounter ground with varying flatness during 3D scanning. The housing 5 and the 3D scanner 2 will be at a certain tilt angle. Once the 3D scanner 2 is tilted, causing the laser transceiver port 1 on one side of the 3D scanner 2 to rise, rainwater and water vapor can easily fall directly into the laser transceiver port 1, affecting the scanning detection.

[0040] Example 2: Please refer to Figure 1-7 Based on Embodiment 1, the present invention provides a technical solution: a counterweight 304 is fixedly connected to the outer wall of the sliding block 303, the counterweight 304 is used to counterweight the sliding block 303, and a stop block 305 is fixedly connected to the side of the top cover 301 away from the telescopic protective plate 311.

[0041] A connecting rod 306 is fixedly connected to the top of the sliding block 303. A rotating ball 307 is rotatably connected to the top of the connecting rod 306. There are two rotating balls 307. A telescopic rod 308 is fixedly connected between the two rotating balls 307. A built-in spring is provided inside the telescopic rod 308.

[0042] A connecting pipe 309 is fixedly connected to the outer wall of the sliding block 303. A fixing block 310 is fixedly connected to one end of the connecting pipe 309. One side of the fixing block 310 is fixedly connected to one side of the telescopic protective plate 311.

[0043] The telescopic rod 308 is connected to the inside of the connecting pipe 309 via the sliding block 303, and the inside of the connecting pipe 309 is connected to the inside of the telescopic protective plate 311 via the fixing block 310.

[0044] If the laser transceiver port 1 on one side of the 3D scanner 2 is positioned high and tilted upwards, the sliding block 303 on the sliding strip 302 on the outer wall of the top cover 301 will slide downwards due to its own gravity. With the counterweight 304, this rapid sliding displacement is achieved, allowing the transceiver port 1 to quickly move away from it when it is raised. This compresses and shortens the telescopic rod 308 between the two sliding blocks 303. The liquid inside the telescopic rod 308 is then forced through the connecting pipe 309 and the fixing block 310 into the telescopic protective plate 311, completing the automatic telescopic deformation of the protective plate 311. The telescopic protective plate 311 automatically shields the top of the laser transceiver port 1, thus enabling the top of the laser transceiver port 1 to be protected from dust and rain. At the same time, the extension distance of the telescopic protective plate 311 can also be adaptively adjusted according to the tilt angle between the 3D scanner 2 and the laser transceiver port 1. The higher the laser transceiver port 1 is raised, the longer the telescopic protective plate 311 extends to protect the inside of the laser transceiver port 1, preventing rainwater or sand and dust from falling into it and affecting the scanning accuracy. When the ground is flat, the telescopic protective plate 311 retracts to the maximum extent, so as not to occupy too much area and ensure that the laser transceiver port 1 can maximize its scanning range.

[0045] If the laser transceiver port 1 and the 3D scanner 2 are tilted to one side, the laser transceiver port 1 will be at different heights on the left and right sides. In this case, the two sliding blocks 303 on the top cover 301 will not move towards the stop block 305 synchronously. One sliding block 303 will slide on the slide bar 302 due to the tilt and collide with the stop block 305, and be stopped by the stop block 305. The other sliding block 303 will slide on the slide bar 302 to the position between the telescopic protective plate 311 and the stop block 305 and stop. At this time, the position of the laser transceiver port 1 is not tilted upwards, and one sliding block 303 is close to the stop block 305. Another sliding block 303 of the stop block 305 is away from the stop block 305, thus forming a phenomenon where the telescopic rod 308 is almost uncompressed. At this time, the telescopic protective plate 311 will not be pushed by the liquid inside the telescopic rod 308 to extend and block the laser transceiver port 1. This mechanism can accurately identify whether there is an upward tilt between the laser transceiver port 1 and the 3D scanner 2, and use the extension of the telescopic protective plate 311 in real time to ensure the blocking and protection of the laser transceiver port 1. The tilt to the left or right will not affect the telescopic protective plate 311, so that the telescopic protective plate 311 will still retract, ensuring the most efficient working environment of the laser transceiver port 1.

[0046] The telescopic rod 308 has a built-in spring. So when the laser transceiver port 1 is at an upward angle, the higher the angle, the closer the two sliding blocks 303 are to the stop block 305. The telescopic rod 308 is squeezed more, and the built-in spring inside the telescopic rod 308 deforms more, thus pushing out more liquid to extend the telescopic protective plate 311. This allows the extension distance of the telescopic protective plate 311 to be moved and pushed linearly with the tilt angle of the laser transceiver port 1, with higher precision and no step-like movement.

[0047] Example 3: Please refer to Figure 1-10 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: a closing mechanism 4 is provided on the top of the three-dimensional scanner 2. The closing mechanism 4 includes a bottom ring 406. The bottom of the bottom ring 406 is fixedly connected to the top of the three-dimensional scanner 2. A telescopic closing plate 401 is fixedly connected to the top of the bottom ring 406. A first magnetic plate 402 is fixedly connected to one side of the telescopic closing plate 401.

[0048] An elastic rope 403 is fixedly connected to the top of the first magnetic plate 402. One end of the elastic rope 403 is fixedly connected to the center of one side of the telescopic protective plate 311. There are two first magnetic plates 402. The two first magnetic plates 402 are close to each other and their magnetic poles attract each other.

[0049] A magnetic strip 404 is fixedly connected to one side of the first magnetic plate 402. One end of the magnetic strip 404 contacts the second magnetic plate 405. The bottom of the second magnetic plate 405 is fixedly connected to the bottom of the telescopic closing plate 401. The side of the second magnetic plate 405 and the magnetic strip 404 that are close to each other are magnetic and attract each other with opposite poles.

[0050] When the tilt angle between the laser transceiver port 1 and the 3D scanner 2 is too large, the sliding block 303 will be fully attached to the stop block 305 by the counterweight block 304. The built-in spring inside the telescopic rod 308 will be squeezed to its maximum. At this time, the telescopic protective plate 311 will be fully extended, and the elastic rope 403 at the bottom of the telescopic protective plate 311 will pull the first magnetic plate 402. At this time, the elastic rope 403 is stretched and deformed too much, and the force pulling the first magnetic plate 402 is greater than the magnetic attraction between the magnetic strip 404 and the second magnetic plate 405. Therefore, the magnetic strip 404 will break away from the magnetic attraction of the second magnetic plate 405 and be quickly pulled by the elastic rope 403. The two first magnetic plates 402 on the left and right and the telescopic closing plate Simultaneously, 401 is pulled rapidly and collides with each other due to inertia. They are magnetically attracted to each other by the opposite pole attraction of the first magnetic plates 402, directly closing the opening of the laser transceiver port 1. This is suitable for situations where the tilt angle is too large and not suitable for three-dimensional laser measurement. It automatically closes the laser transceiver port 1, protecting it and reminding the staff that the operation is not suitable, thus avoiding accidents caused by operational errors. It also ensures that if the laser transceiver port 1 is placed crookedly and slips and falls, the telescopic closing plate 401 will automatically close the opening of the laser transceiver port 1, preventing stones and dust from falling into the laser transceiver port 1.

[0051] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A portable three-dimensional laser scanning measuring instrument, comprising a housing (5), wherein a three-dimensional scanner (2) is disposed inside the top of the housing (5), the three-dimensional scanner (2) extends out from the top of the housing (5), and a laser transceiver port (1) is disposed on one side of the three-dimensional scanner (2), characterized in that: The outer wall of the three-dimensional scanner (2) is provided with a protective mechanism (3); The protective mechanism (3) includes: Top cover (301), the top cover (301) is a circular disc structure, and a slide bar (302) is fixedly connected to the outer wall of the top cover (301). The slide bar (302) is a circular ring structure. The top cover (301) is used to protect the top of the three-dimensional scanner (2). The sliding block (303) is an arc-shaped block structure. The sliding block (303) is slidably connected to the outer wall of the slide bar (302). A telescopic rod (308) is provided above the sliding block (303). A telescopic protective plate (311) is fixedly connected to one side of the top cover (301). The telescopic protective plate (311) is used to protect the laser transceiver port (1). A counterweight (304) is fixedly connected to the outer wall of the sliding block (303). The counterweight (304) is used to counterweight the sliding block (303). A stop block (305) is fixedly connected to the side of the top cover (301) away from the telescopic protective plate (311). The top of the sliding block (303) is fixedly connected to a connecting rod (306), and the top of the connecting rod (306) is rotatably connected to a rotating ball (307). There are two rotating balls (307), and a telescopic rod (308) is fixedly connected between the two rotating balls (307). The telescopic rod (308) is provided with a built-in spring. The top of the three-dimensional scanner (2) is provided with a closing mechanism (4), the closing mechanism (4) includes a bottom ring (406), the bottom of the bottom ring (406) is fixedly connected to the top of the three-dimensional scanner (2), the top of the bottom ring (406) is fixedly connected with a telescopic closing plate (401), and a first magnetic plate (402) is fixedly connected to one side of the telescopic closing plate (401). An elastic rope (403) is fixedly connected to the top of the first magnetic plate (402). One end of the elastic rope (403) is fixedly connected to the center of one side of the telescopic protective plate (311). There are two first magnetic plates (402). The magnetic poles of the two first magnetic plates (402) are attracted to each other when they are close to each other. A magnetic strip (404) is fixedly connected to one side of the first magnetic plate (402). One end of the magnetic strip (404) contacts a second magnetic plate (405). The bottom of the second magnetic plate (405) is fixedly connected to the bottom of the telescopic closing plate (401). The side of the second magnetic plate (405) and the magnetic strip (404) that are close to each other are magnetic and attract each other with opposite poles.

2. The portable three-dimensional laser scanning measuring instrument according to claim 1, characterized in that: The outer wall of the sliding block (303) is fixedly connected to a connecting pipe (309), and one end of the connecting pipe (309) is fixedly connected to a fixing block (310). One side of the fixing block (310) is fixedly connected to one side of the telescopic protective plate (311).

3. A portable three-dimensional laser scanning measuring instrument according to claim 2, characterized in that: The telescopic rod (308) is connected to the inside of the connecting pipe (309) through the sliding block (303), and the inside of the connecting pipe (309) is connected to the inside of the telescopic protective plate (311) through the fixing block (310).

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