Laser scanning device

Abstract

The application discloses a laser scanning device, which comprises a crossbeam and at least two scanning mechanisms, the scanning mechanism comprises a connecting group and a scanning group, the connecting group comprises a connecting piece, the connecting piece comprises a horizontal part and an inclined part, the scanning group comprises a scanning piece and a shooting piece, the scanning piece vertically downward emits a laser beam to form a light spot on the surface of a measured workpiece, and the shooting piece is inclined to the position where the light spot is formed on the measured workpiece to perform shooting, and the scanning piece of one of the two adjacent scanning mechanisms is on the same side of the shooting piece of the other scanning mechanism. The at least two scanning mechanisms are alternately arranged in positive and negative directions, compared with the arrangement mode that a plurality of laser scanners keep on the same line, the distance between the two adjacent scanning mechanisms is closer, the situation that the laser beams cross and interfere with each other due to the too close arrangement distance is avoided, and the scanning precision is ensured.

Description

Technical Field

[0001] This application relates to the field of laser scanner technology, and more particularly to laser scanning equipment. Background Technology

[0002] Three-dimensional laser scanning technology is a non-contact measurement technique that uses a laser beam to quickly and accurately measure the shape and geometry of an object's surface to obtain its three-dimensional coordinate information. It possesses the ability to acquire three-dimensional spatial data information without contact, accurately, reliably, quickly, and efficiently, making it highly valuable in both theoretical guidance and engineering applications for structural inspection.

[0003] Currently, when scanning large workpieces, a single laser scan cannot be completed in one step, which is time-consuming and reduces processing efficiency. When multiple laser scanners scan simultaneously, in order to achieve a comprehensive scan of the workpiece, the distance between two adjacent laser scanners is usually relatively close. In addition, when multiple laser scanners are arranged in a way that keeps them on the same line, it is easy for the laser beams to cross and interfere with each other, affecting the scanning accuracy. Utility Model Content

[0004] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides a laser scanning device, the laser scanning device comprising:

[0005] beam;

[0006] At least two scanning mechanisms are provided, each including a connecting group and a scanning group. The connecting group is mounted on the crossbeam and includes a connector, which includes a flat portion and an inclined portion. The scanning group includes a scanning element and an imaging element, which are respectively mounted at the bottom of the flat portion and the bottom of the inclined portion. At least two scanning mechanisms are arranged at intervals, and their respective flat portions are parallel. The flat portion extends obliquely from one end of the inclined portion, and the angle formed by the two is obtuse, so that the scanning element emits a laser beam vertically downward to form a light spot on the surface of the workpiece being measured, while the imaging element is tilted towards the position where the light spot is formed on the workpiece being measured for imaging. The scanning element of one of the two adjacent scanning mechanisms is on the same side as the imaging element of the other scanning mechanism.

[0007] According to one embodiment of this application, the connection assembly includes a mounting base mounted below the crossbeam, and each of the connectors is detachably mounted to one of the mounting bases.

[0008] According to one embodiment of this application, the mounting base has at least one mounting hole, and the connector has at least one mating hole. Each connector is connected to the mounting base by means of at least one first bolt coaxially corresponding to at least one mating hole and one mounting hole, and the mating hole and the mounting hole cooperate with each other.

[0009] According to one embodiment of this application, each pair of adjacent mounting bases is located between two adjacent connectors.

[0010] According to one embodiment of this application, the mounting base is detachably mounted on the crossbeam.

[0011] According to one embodiment of this application, the crossbeam has at least two sets of mounting holes, the at least two sets of mounting holes are spaced apart along the direction in which at least two scanning mechanisms are arranged, the mounting base has at least one pair of mating holes, and each mounting base is connected to the crossbeam by at least one second bolt and the mating hole and the mounting hole in a manner in which at least one of the mating holes is coaxially corresponding to one of the mounting holes in one set.

[0012] According to one embodiment of this application, a set of mounting holes is provided with at least two, and the at least two mounting holes are spaced apart along a horizontal direction perpendicular to the arrangement direction of the at least two scanning mechanisms. The mounting base is connected to different positions of the crossbeam by the second bolt in such a way that the mating holes correspond to different mounting holes in the horizontal direction perpendicular to the arrangement direction of the at least two scanning mechanisms.

[0013] According to one embodiment of this application, a set of assembly holes is provided with two holes, and each mounting base is provided with a plurality of mating holes. The plurality of mating holes are divided into two groups, and the two groups of mating holes are spaced apart in a horizontal direction perpendicular to the arrangement direction of at least two scanning mechanisms. When any one of the mating holes in one group of the mounting base corresponds to one of the assembly holes in the group, one of the mating holes in the other group corresponds to another assembly hole in the group.

[0014] According to one embodiment of this application, the mounting base includes a mounting portion and a reinforcing portion. The mounting hole and the mating hole are both formed in the mounting portion, and the connector is mounted on one side of the mounting portion. The reinforcing portion is formed on the side of the mounting portion away from the connector, and the reinforcing portion has a triangular cross-section in the horizontal direction perpendicular to the arrangement direction of at least two scanning mechanisms.

[0015] According to one embodiment of this application, the scanned document is implemented as a laser scanner, and the photographic document is implemented as a camera. Attached Figure Description

[0016] Figure 1A schematic diagram of the structure of the laser scanning device described in this application is shown.

[0017] Figure 2 A three-dimensional view of the scanning mechanism described in this application is shown.

[0018] Figure 3 An exploded view of the scanning mechanism structure described in this application is shown. Detailed Implementation

[0019] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0020] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0021] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0022] refer to Figure 1 A preferred embodiment of the laser scanning device according to this application will be described in detail below. The laser scanning device includes a crossbeam 10 and at least two scanning mechanisms 20. Each scanning mechanism 20 includes a connecting group 21 and a scanning group 22. The connecting group 21 is mounted on the crossbeam 10. The connecting group 21 includes a connector 211, which includes a flat portion 2111 and an inclined portion 2112. The scanning group 22 includes a scanning element 221 and an imaging element 222. The scanning element 221 and the imaging element 222 are respectively mounted at the bottom of the flat portion 2111 and the bottom of the inclined portion 2112. At least two of the scanning mechanisms 20 are arranged at intervals, and their respective flat portions 2111 are parallel.

[0023] Preferably, the scanning element 221 is implemented as a laser scanner, and the capturing element 222 is implemented as a camera.

[0024] It is worth mentioning that the flat portion 2111 extends obliquely from one end of the inclined portion 2112, and the angle formed between the two is an obtuse angle. This allows the scanning element 221 to emit a laser beam vertically downwards to form a light spot on the surface of the workpiece being measured, while the imaging element 222 is tilted towards the position where the light spot is formed on the workpiece being measured to capture an image and record the scanning point. The scanning element 221 of one of the two adjacent scanning mechanisms 20 is on the same side as the imaging element 222 of the other scanning mechanism 20.

[0025] In this way, by arranging the scanning elements 221 of at least two scanning mechanisms 20 of this application alternately, that is, by setting adjacent scanning elements 221 on opposite sides, when the scanning elements 221 of at least two scanning mechanisms 20 simultaneously emit laser beams to scan the workpiece being measured, the multiple light spots formed on the surface of the workpiece being measured are staggered. Compared with the common arrangement of multiple laser scanners on the same line, this allows the distance between adjacent scanning mechanisms 20 to be closer, while avoiding the situation where laser beams cross and interfere with each other due to the excessively tight arrangement distance, thus ensuring the scanning accuracy.

[0026] refer to Figures 1 to 3 Furthermore, the connecting assembly 21 includes a mounting base 212, which is installed below the crossbeam 10. Each connecting member 211 is detachably installed on a mounting base 212 so that the scanning member 221 and the imaging member 222 disposed on the connecting member 211 can be replaced as a whole by disassembling and assembling the connecting member 211.

[0027] Preferably, the mounting base 212 has at least one mounting hole 21201, and the connector 211 has at least one mating hole 21101. Each connector 211 is connected to the mounting base 212 in such a way that at least one mating hole 21101 and one mounting hole 21201 are coaxially corresponding, by means of at least one first bolt cooperating with one mating hole 21101 and one mounting hole 21201.

[0028] Preferably, both the mounting hole 21201 and the mating hole 21101 are threaded holes. The first bolt simultaneously engages with both the mounting hole 21201 and the mating hole 21101 to connect the connector 211 and the mounting base 212 into a single unit.

[0029] In one embodiment, the mounting hole 21201 is implemented as a through hole, and the mating hole 21101 is implemented as a threaded hole. The first bolt abuts its head against the port of the mounting hole 21201 on the side away from the connector 211, and its shank passes through the mounting hole 21201 and partially extends into the mating hole 21101 to be threadedly connected to the connector 211, thereby connecting the connector 211 to the mounting base 212.

[0030] In another embodiment, the mounting hole 21201 is implemented as a threaded hole, and the mating hole 21101 is implemented as a through hole. The first bolt abuts its head against the port of the mating hole 21101 on the side away from the mounting base 212, and its shank passes through the mating hole 21101 and partially extends into the mounting hole 21201 to be threadedly connected to the mounting base 212, thereby connecting the connector 211 to the mounting base 212.

[0031] Preferably, each mounting base 212 has four mounting holes 21201, and the number of mating holes 21101 in each connector 211 is the same as the number of mounting holes 21201 in each mounting base 212. When the four mating holes 21101 of each connector 211 correspond to the four mounting holes 21201 of a mounting base 212, the connector 211 is connected to the mounting base 212 by a plurality of first bolts to increase the stability of the assembly.

[0032] Preferably, each pair of adjacent mounting bases 212 is located between two adjacent connectors 211 to increase the distance between the scanning groups 22 respectively disposed on the two adjacent connectors 211, so as to avoid the laser beams emitted by each of them forming intersecting light spots on the surface of the workpiece being tested.

[0033] Furthermore, the mounting base 212 is detachably mounted on the crossbeam 10 so that the number of scanning mechanisms 20 assembled on the crossbeam 10 can be adjusted by disassembling and assembling the mounting base 212, so that the number of scanning mechanisms 20 can be determined according to the actual size of the workpiece being measured, ensuring that the workpiece being measured can be fully scanned.

[0034] refer to Figures 1 to 3 The crossbeam 10 has at least two sets of mounting holes 101, which are spaced apart along the direction in which the at least two scanning mechanisms 20 are arranged. The mounting base 212 has at least one pair of mating holes 21202, and each mounting base 212 is connected to the crossbeam 10 by at least one second bolt coaxially corresponding to one of the mating holes 21202 and one of the mounting holes 101 in a set.

[0035] Preferably, both the assembly hole 101 and the mating hole 21202 are threaded holes. The second bolt simultaneously engages with the assembly hole 101 and the mating hole 21202 to connect the mounting base 212 and the crossbeam 10 into a single unit.

[0036] In one embodiment, the mounting hole 101 is implemented as a through hole, and the mating hole 21202 is implemented as a threaded hole. The second bolt abuts its head against the upper surface of the crossbeam 10, and its shank passes through the mounting hole 101 and partially extends into the mating hole 21202 to be threadedly connected to the mounting base 212, thereby assembling the mounting base 212 to the crossbeam 10.

[0037] In another embodiment, the mounting hole 101 is implemented as a threaded hole, and the mating hole 21202 is implemented as a through hole. The second bolt abuts its head against one end of the mating hole 21202 away from the crossbeam 10, and its shank passes through the mating hole 21202 and partially extends into the mounting hole 101 for threaded connection with the crossbeam 10, thereby assembling the mounting base 212 to the crossbeam 10.

[0038] Preferably, multiple sets of mounting holes 101 are provided, and multiple scanning mechanisms 20 are provided, so that multiple scanning mechanisms 20 can be simultaneously mounted on the crossbeam 10 to achieve full coverage scanning of the workpiece under test and improve scanning efficiency.

[0039] Preferably, at least two of the assembly holes 101 are provided in a set, and the at least two assembly holes 101 are spaced apart in a horizontal direction perpendicular to the arrangement direction of the at least two scanning mechanisms 20. The mounting base 212 is connected to different positions of the crossbeam 10 by the second bolt in such a way that the mating holes 21202 correspond to the different assembly holes 101 in the horizontal direction perpendicular to the arrangement direction of the at least two scanning mechanisms 20, so as to realize the position adjustment of the scanning group 22.

[0040] Preferably, one set of assembly holes 101 is provided in two locations, and each mounting base 212 is provided with a plurality of mating holes 21202. The plurality of mating holes 21202 are divided into two groups, and the two groups of mating holes 21202 are spaced apart in a horizontal direction perpendicular to the arrangement direction of at least two scanning mechanisms 20. When any one of the mating holes 21202 in one group of the mounting base 212 corresponds to one of the assembly holes 101 in the group, one of the mating holes 21202 in the other group corresponds to another assembly hole 101 in the group, so as to adjust the position of the mounting base 212 in the horizontal direction perpendicular to the arrangement direction of at least two scanning mechanisms 20 while ensuring that the mounting base 212 is firmly connected to the crossbeam 10.

[0041] Furthermore, the mounting base 212 includes a mounting portion 2121 and a reinforcing portion 2122. The mounting hole 21201 and the mating hole 21202 are both formed in the mounting portion 2121, and the connector 211 is mounted on one side of the mounting portion 2121. The reinforcing portion 2122 is formed on the side of the mounting portion 2121 away from the connector 211. The reinforcing portion 2122 has a triangular cross-section in the horizontal direction perpendicular to the arrangement direction of at least two scanning mechanisms 20 to enhance the overall rigidity and ensure that the overall weight is sufficiently light.

[0042] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A laser scanning device, characterized in that, The laser scanning device includes: beam; At least two scanning mechanisms are provided, each including a connecting group and a scanning group. The connecting group is mounted on the crossbeam and includes a connector, which includes a flat portion and an inclined portion. The scanning group includes a scanning element and an imaging element, which are respectively mounted at the bottom of the flat portion and the bottom of the inclined portion. At least two scanning mechanisms are arranged at intervals, and their respective flat portions are parallel. The flat portion extends obliquely from one end of the inclined portion, and the angle formed by the two is obtuse, so that the scanning element emits a laser beam vertically downward to form a light spot on the surface of the workpiece being measured, while the imaging element is tilted towards the position where the light spot is formed on the workpiece being measured for imaging. The scanning element of one of the two adjacent scanning mechanisms is on the same side as the imaging element of the other scanning mechanism.

2. The laser scanning device according to claim 1, characterized in that, The connection assembly includes a mounting base mounted below the crossbeam, and each of the connectors is detachably mounted to one of the mounting bases.

3. The laser scanning device according to claim 2, characterized in that, The mounting base has at least one mounting hole, and the connector has at least one mating hole. Each connector is connected to the mounting base by means of at least one first bolt coaxially corresponding to at least one mating hole and one mounting hole, and the mating hole and the mounting hole cooperate with each other.

4. The laser scanning device according to claim 2 or 3, characterized in that, Each pair of adjacent mounting bases is located between the two adjacent connectors.

5. The laser scanning device according to claim 3, characterized in that, The mounting base is detachably mounted to the crossbeam.

6. The laser scanning device according to claim 5, characterized in that, The crossbeam has at least two sets of mounting holes, which are spaced apart along the direction in which the at least two scanning mechanisms are arranged. The mounting base has at least one pair of mating holes. Each mounting base is connected to the crossbeam by at least one second bolt and the mating hole and the mounting hole in a manner in which at least one of the mating holes corresponds coaxially with one of the mounting holes in a set.

7. The laser scanning device according to claim 6, characterized in that, A set of the assembly holes is provided with at least two, and the at least two assembly holes are spaced apart in a horizontal direction perpendicular to the arrangement direction of the at least two scanning mechanisms. The mounting base is connected to different positions of the crossbeam by the second bolt in such a way that the mating holes correspond to the different assembly holes in the horizontal direction perpendicular to the arrangement direction of the at least two scanning mechanisms.

8. The laser scanning device according to claim 7, characterized in that, A set of the assembly holes has two holes, and each of the mounting bases has multiple mating holes. The multiple mating holes are divided into two groups, and the two groups of mating holes are spaced apart in a horizontal direction perpendicular to the arrangement direction of at least two scanning mechanisms. When any one of the mating holes in one group of the mounting base corresponds to one of the assembly holes in the group, one of the mating holes in the other group corresponds to another assembly hole in the group.

9. The laser scanning device according to any one of claims 6 to 8, characterized in that, The mounting base includes a mounting portion and a reinforcing portion. The mounting hole and the mating hole are both formed in the mounting portion, and the connector is mounted on one side of the mounting portion. The reinforcing portion is formed on the side of the mounting portion away from the connector. The reinforcing portion has a triangular cross-section in the horizontal direction perpendicular to the arrangement direction of at least two of the scanning mechanisms.

10. The laser scanning device according to claim 1, characterized in that, The scanning device is implemented as a laser scanner, and the capturing device is implemented as a camera.

Images