Portable three-dimensional laser scanning device

Abstract

The invention discloses a portable three-dimensional laser scanning device, and belongs to the technical field of laser scanning equipment, and the portable three-dimensional laser scanning device comprises a three-dimensional laser scanner host, the bottom of the three-dimensional laser scanner host is in threaded connection with a chassis structure, and the chassis structure is provided with a folding lifting assembly. The front end of the three-dimensional laser scanner host is provided with an adjustable support assembly, and the adjustable support assembly is provided with a filter lens. The chassis structure is composed of a movable chassis, a fixed chassis and a base, and the fixed chassis and the base are located above and below the folding lifting assembly respectively. Three whole bodies of the device can be separated and carried, the folding lifting assembly is compressed to the maximum degree, the portability of the whole device can be effectively improved, meanwhile, combination of the three whole bodies can be achieved through screwing of bolts, the device is provided with a control structure, the installation complexity of the whole device is reduced to a great extent, and the use is convenient. And the practical performance of the whole device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser scanning equipment, and more specifically, to a portable three-dimensional laser scanning device. Background Art

[0002] The prior art has the following problems: At present, the existing 3D laser scanners need to be used in conjunction with brackets, and the brackets are not easy to shrink and combine, which makes it difficult for employees to carry the 3D laser scanners.

[0003] Therefore, in view of this, the existing structure is studied and improved to provide a portable three-dimensional laser scanning device in order to achieve a more practical purpose.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a portable three-dimensional laser scanning device, which can realize the three components of the device to be carried separately from each other, and the folding and lifting components are maximally compressed, which can effectively improve the portability of the entire device. At the same time, the three components can be combined by tightening the bolts, and the device installation control structure greatly reduces the installation complexity of the entire device and improves the practical performance of the entire device.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A portable three-dimensional laser scanning device comprises a three-dimensional laser scanner mainframe, the bottom of the three-dimensional laser scanner mainframe is threadedly connected to a chassis structure, a folding lifting assembly is arranged on the chassis structure, an adjustable bracket assembly is installed at the front end of the three-dimensional laser scanner mainframe, and a filter is installed on the adjustable bracket assembly, the chassis structure is composed of a movable chassis, a fixed chassis and a base, and the movable chassis, the fixed chassis and the base are distributed in parallel up and down, the movable chassis is fixed to the bottom of the three-dimensional laser scanner mainframe by bolts at its top, the fixed chassis and the movable chassis are connected by bearings, and the fixed chassis and the base are respectively located above and below the folding lifting assembly; The folding lifting assembly consists of four folding support structures, two screw modules and a rotation control device. The folding support structure consists of a slide, a connecting seat, a first straight rod and a second straight rod. The slide slides on the base, the connecting seat slides along the extension direction of the slide, and the connecting seat, the first straight rod and the second straight rod are hinged. One end of the first straight rod is hinged to the bottom end of the fixed chassis, and one end of the second straight rod is hinged to the top end of the base.

[0008] Furthermore, an embedding groove is provided at the top of the base, and a counterweight block is placed in the embedding groove.

[0009] Furthermore, a threaded docking hole is provided at the center of the base.

[0010] Furthermore, a locking knob is threadedly connected to the bottom end of the fixed chassis, and the length of the locking knob is greater than the thickness of the fixed chassis.

[0011] Furthermore, each screw module is threadedly connected to the bottom ends of the two slides at the same time, and the two slides are located on two adjacent folding support structures, and both ends of the screw module are slidably connected to the base through bearings, and the rotation control device is fixed on the base, and the rotation control device controls the two screw modules to rotate synchronously; The rotation control device is composed of a lifting drive motor, a driving sprocket, a driven sprocket and a chain; The output end of the lifting drive motor is connected to the driving sprocket through a coupling. The driving sprocket is fixed to one end of one of the screw modules, and the driven sprocket is fixed to one end of the other screw module. The driving sprocket and the driven sprocket are driven by a chain.

[0012] Furthermore, two slide seats threadedly connected to the same screw module are both provided with threaded holes, and the thread pitches of the two threaded holes are equal and the rotation directions are opposite.

[0013] Furthermore, a long slide groove is provided inside the slide seat, and a long slide bar is fixedly installed at one end of the connecting seat, and the length of the long slide bar is the same as the depth of the long slide groove.

[0014] Furthermore, the adjustable bracket assembly includes two U-shaped brackets, the two U-shaped brackets are arranged in parallel, and the two U-shaped brackets are connected to a rotating rod through a bearing, a protective frame is fixedly installed between the two rotating rods, and the filter is fixed inside the protective frame.

[0015] Furthermore, mounting points are fixed at the top and bottom of the three-dimensional laser scanner host, the upper U-shaped bracket is fixed to the upper mounting point by bolts, and the lower U-shaped bracket is fixed to the lower mounting point by bolts.

[0016] Furthermore, a corner drive motor is fixed on the upper U-shaped bracket, and an output end of the corner drive motor is transmission-connected to the rotating rod located above through a coupling.

[0017] Different from the prior art, the technical solution of the present application is that when the entire device is carried, the three-dimensional laser scanner main unit is an integral whole, the chassis structure and the folding lifting assembly are an integral whole, the adjustable bracket assembly and the filter are an integral whole, the three integral parts are separated from each other, and the folding lifting assembly is compressed to the maximum extent, which can effectively improve the portability of the entire device; when the device is installed, the combination of the above three integral parts can be achieved by tightening the bolts, and the lifting of the device is controlled by the lifting drive motor, and the angle of the filter is controlled by the turning drive motor, which greatly reduces the installation complexity of the entire device and improves the practical performance of the entire device.

[0018] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0020] In the drawings of the specification: Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the mainframe of the three-dimensional laser scanner in the present invention; Figure 3 It is a structural schematic diagram of the chassis structure and the folding lifting assembly in the present invention; Figure 4 It is a schematic diagram of the structure of the distribution of four folding support structures in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the folding support structure in the present invention; Figure 6 It is a schematic diagram of the structure when the long slide bar and the long slide groove are separated in the present invention; Figure 7 is a top view schematic diagram of the rotation control device of the present invention; Figure 8 It is a schematic diagram of the structure of the adjustable bracket assembly and the filter in the present invention.

[0021] The reference numerals in the above drawings are described as follows: 1. 3D laser scanner host; 101. Installation point; 2. Chassis structure; 201. Movable chassis; 202, fixed chassis; 2021, locking knob; 203, base; 2031, embedding groove; 2032, counterweight block; 2033, threaded docking hole; 3. Folding lifting assembly; 301, folding support structure; 3011, slide seat; 30111, long slide groove; 3012, connecting seat; 30121, long slide bar; 3013, first straight bar; 3014, second straight bar; 302, screw module; 303, rotation control device; 3031, lifting drive motor; 3032, driving sprocket; 3033, driven sprocket; 3034, chain; 4. Adjustable bracket assembly; 401. U-shaped bracket; 402. Rotating rod; 403. Protective frame; 404. Corner driving motor; 5. Filter. DETAILED DESCRIPTION

[0022] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0023] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0024] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0025] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0026] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0027] Without further limitations, in this application, the words "include", "comprises", "has" or other similar open-ended expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0028] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0029] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0030] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a direct connection, or an indirect connection through an intermediate medium; it can be a relationship in which two components are combined together, or an interaction relationship between two components, or a connection between the insides of two structures. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] At present, the existing 3D laser scanners need to be used in conjunction with brackets, and the brackets are not easy to shrink and combine, which makes it difficult for employees to carry the 3D laser scanners.

[0032] In view of this, an embodiment of the present application provides a portable three-dimensional laser scanning device. When the entire device is carried, the three-dimensional laser scanner main unit is an integral unit, the chassis structure and the folding lifting assembly are an integral unit, the adjustable bracket assembly and the filter are an integral unit, the three integral units are separated from each other, and the folding lifting assembly is compressed to the maximum extent, which can effectively improve the portability of the entire device; when the device is installed, the combination of the above three integral units can be achieved by tightening the bolts, and the lifting of the device is controlled by the lifting drive motor, and the angle of the filter is controlled by the turning drive motor, which greatly reduces the installation complexity of the entire device and improves the practical performance of the entire device.

[0033] See also Figure 1 - Figure 8 A portable three-dimensional laser scanning device comprises a three-dimensional laser scanner host 1, a chassis structure 2 is threadedly connected to the bottom of the three-dimensional laser scanner host 1, a folding lifting component 3 is arranged on the chassis structure 2, an adjustable bracket component 4 is installed at the front end of the three-dimensional laser scanner host 1, and a filter 5 is installed on the adjustable bracket component 4; See also Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 Specifically, the chassis structure 2 is composed of a movable chassis 201, a fixed chassis 202 and a base 203, and the movable chassis 201, the fixed chassis 202 and the base 203 are arranged in parallel up and down, the movable chassis 201 is fixed to the bottom of the 3D laser scanner host 1 by bolts at its top, the fixed chassis 202 is connected to the movable chassis 201 by a bearing, and the fixed chassis 202 and the base 203 are respectively located above and below the folding lifting component 3; Specifically, a locking knob 2021 is threadedly connected to the bottom end of the fixed chassis 202 , and the length of the locking knob 2021 is greater than the thickness of the fixed chassis 202 .

[0034] When the locking knob 2021 is screwed in clockwise, its threaded rod can pass through the fixed chassis 202 and be pressed against the movable chassis 201, thereby restricting the movable chassis 201 from continuing to rotate, thereby achieving angular locking of the movable chassis 201 and the three-dimensional laser scanner host 1.

[0035] See also Figure 4 , Figure 5 , Figure 6Specifically, the folding lifting assembly 3 is composed of four folding support structures 301, two screw modules 302 and a rotation control device 303. The folding support structure 301 is composed of a slide 3011, a connecting seat 3012, a first straight rod 3013 and a second straight rod 3014. The slide 3011 slides on the base 203, and the connecting seat 3012 slides along the extension direction of the slide 3011. The connecting seat 3012, the first straight rod 3013 and the second straight rod 3014 are hinged. One end of the first straight rod 3013 is hinged to the bottom end of the fixed chassis 202, and one end of the second straight rod 3014 is hinged to the top end of the base 203. Each screw module 302 is threadedly connected to the bottom ends of the two slides 3011 at the same time, and the two slides 3011 are located on two adjacent folding support structures 301, and both ends of the screw module 302 are slidingly connected to the base 203 through bearings, the rotation control device 303 is fixed on the base 203, and the rotation control device 303 controls the two screw modules 302 to rotate synchronously.

[0036] See also Figure 3 , Figure 4 , Figure 7 Specifically, the rotation control device 303 is composed of a lifting drive motor 3031, a driving sprocket 3032, a driven sprocket 3033 and a chain 3034; The output end of the lifting drive motor 3031 is connected to the driving sprocket 3032 through a coupling. The driving sprocket 3032 is fixed to one end of one of the screw modules 302, and the driven sprocket 3033 is fixed to one end of the other screw module 302. The driving sprocket 3032 and the driven sprocket 3033 are driven by a chain 3034.

[0037] When the lifting drive motor 3031 rotates, the driving sprocket 3032 and the driven sprocket 3033 rotate synchronously by utilizing the transmission effect of the chain 3034, thereby causing the two screw modules 302 to rotate synchronously.

[0038] See also Figure 3 , Figure 4 Specifically, two slide seats 3011 threadedly connected to the same screw module 302 are both provided with threaded holes, and the pitches of the two threaded holes are equal and the rotation directions are opposite.

[0039] When the screw module 302 rotates, the two slides 3011 slide in opposite directions by using the sliding restriction of the base 203 on the slides 3011 .

[0040] See also Figure 5 , Figure 6Specifically, a long slide groove 30111 is opened inside the slide seat 3011, and a long slide bar 30121 is fixedly installed at one end of the connecting seat 3012, and the length value of the long slide bar 30121 is the same as the depth value of the long slide groove 30111.

[0041] When the connecting seat 3012 slides up and down along the sliding seat 3011, the long slide bar 30121 slides along the long slide groove 30111, and at the same time, the long slide bar 30121 slides up and down inside the long slide groove 30111. Since the length of the long slide bar 30121 is relatively large, the up and down sliding range of the connecting seat 3012 can be effectively increased, thereby improving the lifting and lowering adjustment range of the folding support structure 301.

[0042] See also Figure 1 , Figure 2 , Figure 8 Specifically, the adjustable bracket assembly 4 includes two U-shaped brackets 401, the two U-shaped brackets 401 are arranged in parallel, and the two U-shaped brackets 401 are connected to a rotating rod 402 through a bearing, a protective frame 403 is fixedly installed between the two rotating rods 402, and the filter 5 is fixed inside the protective frame 403.

[0043] By controlling the rotation of any one of the rotating rods 402, the protection frame 403 and the filter 5 can be rotated synchronously, and the filter 5 can be rotatable. Then, by coordinating the rotation of the three-dimensional laser scanner host 1, the laser beam emitted from the emission port of the three-dimensional laser scanner host 1 can be adjusted, so that more directions can be irradiated.

[0044] Specifically, the top and bottom ends of the 3D laser scanner host 1 are fixed with mounting points 101, the upper U-shaped bracket 401 is fixed to the upper mounting point 101 by bolts, and the lower U-shaped bracket 401 is fixed to the lower mounting point 101 by bolts.

[0045] By means of bolt fixing, the entire adjustable bracket assembly 4 is conveniently installed or separated from the three-dimensional laser scanner host 1. When the two are separated, the portability of the three-dimensional laser scanner host 1 is improved.

[0046] Specifically, a corner driving motor 404 is fixed on the upper U-shaped bracket 401 , and an output end of the corner driving motor 404 is transmission-connected to the upper rotating rod 402 via a coupling.

[0047] By utilizing the rotation angle driving motor 404 , the amplitude of synchronous rotation of the rotating rod 402 , the protection frame 403 , and the filter 5 can be conveniently controlled, thereby realizing precise control of the deflection angle of the filter 5 .

[0048] Working principle: When the entire device is in use, the 3D laser scanner host 1 is an integral whole, the chassis structure 2 and the folding lifting assembly 3 are an integral whole, the adjustable bracket assembly 4 and the filter 5 are an integral whole, the three integral parts are separated from each other, and the folding lifting assembly 3 is compressed to the maximum extent to improve the portability of the entire device.

[0049] When the device is carried to a designated location, the device can be used. When using the device, first take out the chassis structure 2 and the folding lifting assembly 3, and adjust the height of the movable chassis 201 in the chassis structure 2 to make it slightly lower than the height of the 3D laser scanner host 1. Specifically, the lifting drive motor 3031 works to control the active sprocket 3032 and the driven sprocket 3033 to rotate synchronously, thereby controlling the two screw modules 302 to rotate synchronously. At this time, the slide seat 3011 in the folding support structure 301 moves and pushes the connecting seat 3012 to move synchronously. In this process, the angle between the first straight rod 3013 and the second straight rod 3014 increases, so that the distance between the fixed chassis 202 and the base 203 increases, and the long slide bar 30121 on the connecting seat 3012 slides along the long slide groove 30111 until the height of the movable chassis 201 is slightly lower than the height of the 3D laser scanner host 1, and the lifting drive motor 3031 stops and locks the position; Then, the movable chassis 201 is fixed to the bottom of the 3D laser scanner mainframe 1 by bolts at the top thereof, and the U-shaped bracket 401 is fixed to the mounting point 101 on the 3D laser scanner mainframe 1 by bolts; Then turn on the 3D laser scanner host 1, start the corner drive motor 404 and adjust the angle of the filter 5, then rotate the 3D laser scanner host 1 to align it with the vertical plane where the scanning position is located, and at the same time, start the lifting drive motor 3031 again to make the scanning laser beam of the 3D laser scanner host 1 reach the specified height.

[0050] This completes the carrying and installation of the device.

[0051] When the device is used and performs scanning, the laser beam is emitted through the transmitter of the 3D laser scanner host 1. The laser beam is irradiated to the surface of the object to be measured and then reflected back and received by the receiver of the 3D laser scanner host 1. Then, the time counter records the time from the emission to the reception of the laser, and the distance from the measured point to the scanner is calculated according to the speed of light and the time difference. At the same time, the laser beam can be scanned in different directions through the rotatable filter 5, so as to obtain the 3D coordinate data of each point on the surface of the object, and generate a point cloud model after software processing, which intuitively presents the 3D shape of the object.

[0052] Based on the above embodiment 1, further description is given.

[0053] See also Figure 4 , Figure 5Specifically, an embedding groove 2031 is formed at the top of the base 203 , and a counterweight block 2032 is placed in the embedding groove 2031 .

[0054] According to the use of the entire device, determine whether the counterweight 2032 is needed. When the folding lifting component 3 is controlled to make the height of the three-dimensional laser scanner host 1 lower, the counterweight 2032 may not be used. When the folding lifting component 3 is controlled to make the height of the three-dimensional laser scanner host 1 higher, in order to ensure the center of gravity and stability of the entire device, the counterweight 2032 may be used to lower the center of gravity.

[0055] At the same time, since the counterweight block 2032 is easy to separate from the base 203, the separated device is more convenient to carry.

[0056] Specifically, a threaded docking hole 2033 is provided at the center of the base 203 .

[0057] When the ground at the place where the three-dimensional laser scanner host 1 is used is relatively soft or uneven, the threaded docking hole 2033 can be used to dock with equipment such as a tripod, thereby facilitating the use of the entire device.

[0058] It should be noted that, although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present invention specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A portable three-dimensional laser scanning device, comprising a three-dimensional laser scanner host, characterized in that: The bottom of the 3D laser scanner mainframe is threadedly connected to a chassis structure, a folding lifting assembly is arranged on the chassis structure, an adjustable bracket assembly is installed at the front end of the 3D laser scanner mainframe, and a filter is installed on the adjustable bracket assembly, the chassis structure is composed of a movable chassis, a fixed chassis and a base, and the movable chassis, the fixed chassis and the base are distributed in parallel up and down, the movable chassis is fixed to the bottom of the 3D laser scanner mainframe by bolts at its top, the fixed chassis and the movable chassis are connected by bearings, and the fixed chassis and the base are respectively located above and below the folding lifting assembly; The folding lifting assembly consists of four folding support structures, two screw modules and a rotation control device. The folding support structure consists of a slide, a connecting seat, a first straight rod and a second straight rod. The slide slides on the base, the connecting seat slides along the extension direction of the slide, and the connecting seat, the first straight rod and the second straight rod are hinged. One end of the first straight rod is hinged to the bottom end of the fixed chassis, and one end of the second straight rod is hinged to the top end of the base.

2. A portable three-dimensional laser scanning device according to claim 1, characterized in that: The top of the base is provided with an embedding groove, and a counterweight block is arranged in the embedding groove.

3. The portable three-dimensional laser scanning device according to claim 1, characterized in that: A threaded docking hole is provided at the center of the base.

4. The portable three-dimensional laser scanning device according to claim 1, characterized in that: The bottom end of the fixed chassis is threadedly connected with a locking knob, and the length of the locking knob is greater than the thickness of the fixed chassis.

5. The portable three-dimensional laser scanning device according to claim 1, characterized in that: Each screw module is threadedly connected to the bottom ends of the two slides at the same time, and the two slides are located on two adjacent folding support structures, and both ends of the screw module are slidably connected to the base through bearings, and the rotation control device is fixed on the base, and the rotation control device controls the two screw modules to rotate synchronously; The rotation control device is composed of a lifting drive motor, a driving sprocket, a driven sprocket and a chain; The output end of the lifting drive motor is connected to the driving sprocket through a coupling. The driving sprocket is fixed to one end of one of the screw modules, and the driven sprocket is fixed to one end of the other screw module. The driving sprocket and the driven sprocket are driven by a chain.

6. The portable three-dimensional laser scanning device according to claim 1, characterized in that: Two slide seats threadedly connected to the same screw module are both provided with threaded holes, and the thread pitches of the two threaded holes are equal and the rotation directions are opposite.

7. The portable three-dimensional laser scanning device according to claim 1, characterized in that: A long slide groove is provided inside the slide seat, and a long slide bar is fixedly installed at one end of the connecting seat, and the length of the long slide bar is the same as the depth of the long slide groove.

8. The portable three-dimensional laser scanning device according to claim 1, characterized in that: The adjustable bracket assembly includes two U-shaped brackets, the two U-shaped brackets are arranged in parallel, and the two U-shaped brackets are connected to a rotating rod through a bearing, a protection frame is fixedly installed between the two rotating rods, and the filter is fixed inside the protection frame.

9. The portable three-dimensional laser scanning device according to claim 8, characterized in that: The top and bottom ends of the three-dimensional laser scanner host are fixed with mounting points, the upper U-shaped bracket is fixed to the upper mounting point by bolts, and the lower U-shaped bracket is fixed to the lower mounting point by bolts.

10. The portable three-dimensional laser scanning device according to claim 8, characterized in that: A turning angle driving motor is fixed on the upper U-shaped bracket, and an output end of the turning angle driving motor is drivingly connected to a rotating rod located above through a coupling.

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