An adaptive 3D laser scanner

Abstract

The present invention relates to the technical field of engineering surveying, and provides an adaptive three-dimensional laser scanner to solve the problem that the operation cycle of the existing three-dimensional laser scanner is lengthened due to structural design defects. It includes a scanner; a support frame, on which the scanner is arranged; a chassis, on which the support frame is arranged. The chassis includes three support plates and a number of V-shaped hinges. Each of the support plates is connected to each other in a surrounding manner through each of the V-shaped hinges. Each of the V-shaped hinges includes an active state and a locked state. An installation frame is arranged between each of the support plates, and a tightening and loosening component is arranged in the installation frame. The tightening and loosening component is used to simultaneously switch the states of each of the V-shaped hinges; by switching the states of the V-shaped hinges through the tightening and loosening component to adjust the flipping angles of each support plate, the contact points between the chassis and the uneven ground can be increased, the stability of the support frame erected above it can be stabilized, and thus different ground conditions can be adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering surveying, and particularly to an adaptive three-dimensional laser scanner. Background Art

[0002] The three-dimensional laser scanning technology has been continuously developed and gradually matured, and the equipment has also been gradually commercialized. The great advantage of the three-dimensional laser scanner is that it can quickly scan the object to be measured and directly obtain the scanned point cloud data without any additional operations. In this way, three-dimensional modeling and virtual reproduction can be carried out efficiently. Therefore, it has become one of the current research hotspots and has been widely applied in the fields of digital cultural relics protection, civil engineering, industrial measurement, survey, terrain visualization, etc.

[0003] In surveying and mapping operations, the three-dimensional laser scanner is supported by a support frame. However, when the existing support frame is applied to the ground such as gravel, soft soil, and fine sand, due to the small contact area of the bottom of the support feet of the support frame and the large weight of the three-dimensional laser scanner, when it is installed on complex ground, affected by factors such as the shaking of the gravel and the settlement caused by the small force-bearing surface of the support feet, during the reading in surveying and mapping operations, there is a situation where the instrument shows horizontal before reading, but shows non-horizontal after reading, resulting in an extended operation cycle. Summary of the Invention

[0004] Therefore, an adaptive three-dimensional laser scanner is needed to solve the problem of the extended operation cycle of the existing three-dimensional laser scanner due to the structural design defect.

[0005] To achieve the above object, the inventor provides an adaptive three-dimensional laser scanner, comprising:

[0006] A scanner;

[0007] A support frame, the scanner is arranged on the support frame, and the support frame includes a fixed disk and three support feet connected to the fixed disk;

[0008] A chassis, the support frame is arranged on the chassis, the chassis includes three support plates and a number of V-shaped hinges. Each of the support plates is connected to each other in a surrounding manner through each of the V-shaped hinges. Each of the V-shaped hinges includes an active state and a locked state. An installation frame is arranged between each of the support plates. An elastic component is arranged in the installation frame, and the elastic component is used to simultaneously switch the states of each of the V-shaped hinges. The V-shaped hinge includes a V-shaped shell and a rotating rod that can slide at both ends of the V-shaped shell. One end of each of the rotating rods extends into each of the V-shaped shells, and the diameter of each of the rotating rods gradually increases from the side where it extends into to the side where it does not extend into;

[0009] A fixing component, which is arranged on the chassis and is used to fix the bottom ends of each of the support feet.

[0010] Further, a grinding texture section is provided on the outer side of each of the rotating rods. Each of the grinding texture sections occupies 1 / 5 - 1 / 2 of the length of the corresponding rotating rod, and each of the grinding texture sections extends into each of the V-shaped shells by 1 / 3 - 1 / 2.

[0011] Further, the installation frame is circular, a ring-shaped groove is provided on the outer side of the installation frame, and the edges of the support plates are arranged in a manner that fits the ring-shaped groove.

[0012] Further, the tightening and loosening assembly includes a pressure button and a number of guide rods. One end of each of the guide rods is hinged to each of the V-shaped hinges, the other end of each of the guide rods penetrates into the installation frame and is provided with a wedge block, an elastic member is provided on the side of each of the guide rods away from the wedge block, and a number of pressure blocks matching the wedge blocks are provided below the pressure button.

[0013] Further, a return spring is provided in the installation frame, and the return spring is arranged below the pressure button.

[0014] Further, each of the elastic members is integrally formed with each of the guide rods, and each of the elastic members is a wavy elastic sheet.

[0015] Further, each of the fixing assemblies includes a limiting block. One side of each of the limiting blocks is provided with an inclined surface, the included angle between each of the inclined surfaces and each of the support plates is 60° - 90°, and an anti-slip layer is provided on each of the inclined surfaces.

[0016] Further, each of the fixing assemblies further includes an elastic plate provided on one side of the inclined surface of each of the limiting blocks. The elastic plates are spaced from the limiting blocks, elastic sheets are provided on the sides of the elastic plates away from the limiting blocks, and the elastic plates are not parallel to the inclined surfaces.

[0017] Further, a hollow column is provided at the bottom of the installation frame.

[0018] Further, a storage groove is provided at the bottom of each of the support plates. The storage grooves are provided on the sides of the support plates away from the installation frame, and protrusions matching the storage grooves are provided on the outer side of the hollow column.

[0019] Different from the prior art, the above technical solution has the following advantages:

[0020] The 3D laser scanner proposed in this application includes a chassis adapted to the support frame. During surveying and mapping operations, when it is erected on the ground such as gravel, soft soil, and fine sand, it can increase the contact area between the support frame and the ground. By switching the state of the V-shaped hinge through the tightening and loosening assembly to adjust the flipping angle of each support plate, it can increase the contact points between the chassis and the uneven ground, stabilize the stability of the support frame erected above it, and thus adapt to different ground conditions. Description of the Drawings

[0021] Figure 1Schematic diagram of the structure of this embodiment;

[0022] Figure 2 Schematic diagram of the deployed chassis structure of this embodiment;

[0023] Figure 3 Schematic diagram of the decomposed structure of the V-shaped hinge of this embodiment;

[0024] Figure 4 Schematic diagram of the sectional structure of the installation frame of this embodiment;

[0025] Figure 5 is Figure 1 Schematic diagram of the enlarged structure at position A in

[0026] Figure 6 is Figure 2 Schematic diagram of the enlarged structure at position B in

[0027] Description of reference numerals:

[0028] Support frame 1; fixed disk 11; support feet 12;

[0029] Chassis 2; support plate 21; arc angle 211; V-shaped hinge 22; V-shaped shell 221; rotating rod 222; grooved section 223

[0030] Installation frame 3; annular groove 31; return spring 32;

[0031] Tightening and loosening assembly 4; pressure button 41; pressure block 411; guide rod 42; wedge block 421; elastic member 422;

[0032] Fixing assembly 5; limiting block 51; inclined surface 52; anti-slip layer 53; elastic plate 54; elastic piece 55;

[0033] Hollow column 6; protrusion 61. Detailed implementation manners

[0034] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, the following is a detailed description in conjunction with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.

[0035] Reference to "embodiment" in this document means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0036] Unless otherwise defined, the meanings of the technical terms used in this document are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of the relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0037] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: the existence of A, the existence of B, and the simultaneous existence of A and B. In addition, the character " / " in this document generally represents an "or" logical relationship between the associated objects before and after.

[0038] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary, or sequential relationship between these entities or operations.

[0039] Without further limitation, in this application, the expressions "comprising", "including", "having", or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product including the said elements, such that the process, method, or product including a series of elements may not only include those defined elements, but also include other elements not explicitly listed, or elements inherent to such process, method, or product.

[0040] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the number itself; expressions such as "above", "below", "within", etc. are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are also understood in this way, unless otherwise specifically defined.

[0041] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawings. It is only for the convenience of describing the specific embodiments of the present application or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0042] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected to", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0043] Please refer to Figures 1 to 6 As shown, this embodiment provides an adaptive three-dimensional laser scanner, including:

[0044] A scanner (not shown in the figure); a support frame 1, the scanner is arranged on the support frame 1, the support frame 1 includes a fixed disk 11 and three support legs 12 connected to the fixed disk 11; a chassis 2, the support frame 1 is arranged on the chassis 2, the chassis 2 includes three support plates 21 and a plurality of V-shaped hinges 22, each of the support plates 21 is connected to each other in a surrounding manner through each of the V-shaped hinges 22, each of the V-shaped hinges 22 includes an active state and a locked state, an installation frame 3 is arranged between each of the support plates 21, and a tightening assembly 4 is arranged in the installation frame 3, the tightening assembly 4 is used to simultaneously switch the states of each of the V-shaped hinges 22, the V-shaped hinge 22 includes a V-shaped shell 221 and a rotating rod 222 slidably arranged at both ends of the V-shaped shell 221, one end of each of the rotating rods 222 extends into each of the V-shaped shells 221, and the diameter of each of the rotating rods 222 gradually increases from the side where it extends into to the side where it does not extend into; a fixing assembly 5, the fixing assembly 5 is arranged on the chassis 2 for fixing the bottom ends of each of the support legs 12.

[0045] Among them, one end of each of the rotating rods 222 that does not penetrate into the V-shaped housing 221 is rotatably connected to each of the support plates 21. The number of the V-shaped hinges 22 is the same as the number of the support plates 21, which is three in this embodiment. Since there are four-legged frames on the market, when the number of the legs is four, the number of the V-shaped hinges 22 and the number of the support plates 21 increase correspondingly, which is only an addition or subtraction of the number, and will not be elaborated here.

[0046] A knurled section 223 is provided on the outer side of each of the rotating rods 222. Each of the knurled sections 223 occupies 1 / 3 of the length of the corresponding rotating rod 222, and each of the knurled sections 223 penetrates into the V-shaped housing 221 by 1 / 2.

[0047] The setting of the knurled section 223 can further stabilize the stability of the support plate in the locked state of the V-shaped hinge 22. Among them, the knurled section 223 can be provided with patterns on the outer side of the rotating rod 222, or can be provided with an anti-slip rubber layer on the outer side of the rotating rod 222. The setting methods are all prior arts and will not be elaborated here. In this embodiment, the knurled section 223 is provided with patterns on the outer side of the rotating rod.

[0048] In this embodiment, the mounting frame 3 is circular, and an annular groove 31 is provided on the outer side of the mounting frame 3. The edges of each of the support plates 21 are attached to the annular groove 31; the annular groove 31 is used to limit the positions of the support plates 21 on the mounting frame 3. To avoid wear between the two during the rotation of the support plates 21, an arc-shaped corner 211 is provided on the edge of each of the support plates 21 that is attached to the annular groove 31.

[0049] In other preferred embodiments, the mounting frame 3 can also be square, and specific adjustments are made according to the actual number of legs 12 of the support frame 1.

[0050] The tightening assembly 4 includes a press button 41 and a plurality of guide rods 42. One end of each of the guide rods 42 is connected to each of the V-shaped hinges 22. The other end of each of the guide rods 42 penetrates into the mounting frame 3 and is provided with a wedge block 421. An elastic member 422 is provided on the side of each of the guide rods 42 away from the wedge block 421. A plurality of press blocks 411 that match the wedge blocks 421 are provided below the press button 41.

[0051] The number of the guide rods 42 is the same as that of each of the V-shaped hinges 22. In this embodiment, each of the elastic members 422 is integrally formed with each of the guide rods 42, and each of the elastic members 422 is a wavy elastic sheet; in other preferred embodiments, the elastic member 422 may also be a spring; the tightening and loosening assembly 4 is used to simultaneously switch each of the V-shaped hinges 22 from the active state to the locked state, or simultaneously switch each of the V-shaped hinges 22 from the locked state to the active state; through the design of the tightening and loosening assembly 4 in cooperation with the V-shaped hinge 22, the adaptability of the chassis 2 when applied to different terrains can be improved. During the surveying and mapping operation, when erected on the ground such as gravel, soft soil, and fine sand, the contact area between the support frame and the ground can be increased. By switching the state of the V-shaped hinge 22 through the tightening and loosening assembly 4 to adjust the flipping angle of each support plate 21, the contact points between the chassis 2 and the uneven ground can be increased, and the stability of the support frame 1 erected above it can be stabilized, thereby adapting to different ground conditions.

[0052] A return spring 32 is provided in the mounting frame 3, and the return spring 32 is arranged below the push button 41; the setting of the return spring 32 can make the pressing of the push button 41 more stable, and at the same time improve the stability of the V-shaped hinge 22 in the locked state.

[0053] Each of the fixing components 5 includes a limiting block 51. One side of each of the limiting blocks 51 is provided with an inclined surface 52. The included angle between each of the inclined surfaces 52 and each of the support plates 21 is 70°. An anti-slip layer 53 is provided on each of the inclined surfaces 52, and the anti-slip layer 53 is made of rubber; the setting of the limiting block 51 can limit the opening angle of the bottom feet 12 of the support frame 1, making the erection of the support frame 1 more stable. The design of the inclined surface 52 and the anti-slip layer 53 can adapt to common foot types on the market.

[0054] Each of the fixing components 5 further includes an elastic plate 54 provided on one side of the inclined surface 52 of each of the limiting blocks 51. Each of the elastic plates 54 is spaced from each of the limiting blocks 51. One side of each of the elastic plates 54 away from each of the limiting blocks 51 is provided with an elastic sheet 55. Each of the elastic plates 54 is not parallel to each of the inclined surfaces 52; the included angle between the elastic plate 54 and the support plate 21 is greater than the included angle between the inclined surface 52 and the support plate 21 to clamp the foot 12 provided between the elastic sheet 55 and the limiting block 51. The elastic sheet 55 is a V-shaped metal elastic sheet and can be purchased on the market, so it will not be elaborated here.

[0055] The bottom of the installation frame 3 is provided with a hollow column 6. The bottom of each support plate 21 is provided with a storage groove (not shown in the figure). The storage groove is arranged on the side of each support plate 21 away from the installation frame 3. The outer side of the hollow column 6 is provided with a protrusion 61 matching each storage groove. The protrusion 61 is annular. The hollow column 6 can be used in combination with the chassis 2 to reduce the storage volume of the chassis 2. The cooperation between the storage groove and the protrusion 61 can prevent the hollow column 6 from falling off in the storage state, which is convenient for opening during the next use.

[0056] Device principle:

[0057] During use, the chassis 2 is in the storage state. At this time, the storage grooves on each support plate 21 and the protrusions 61 on the hollow column 6 are in a matching state. At this time, each V-shaped hinge 22 is in a locked state. During operation, step on the pressure button 41 to move the pressing block 411 below the pressure button 41 downward, and drive the wedge block 421 to move away from the elastic member 422, thereby pushing the guide rod 42 to drive the V-shaped shell 221 to move away from the elastic member 422, so that the rotating rod 222 can rotate within the V-shaped shell 221. At this time, the V-shaped hinge 22 is in an active state. Then, the operator cooperates to unfold each support plate 21, and then release the pressure button 41. The V-shaped hinge 22 returns to the locked state again. At this time, move the hollow column 6 away, place the chassis 2 on the working ground, step on the pressure button 41 again to automatically match the angle between each support plate 21 and the installation frame 3 with the ground for adaptive adjustment. Then, place the feet 12 of the support frame 1 between the corresponding elastic plates 54 and the limit blocks 51, and place the scanner on the fixed plate of the support frame 1 to complete the erection. When it is necessary to change the surveying and mapping site, move the chassis 2 to the ground of the next site and re-perform the adaptive adjustment. At the same time, according to different terrains, the chassis 2 can also be placed with the side with the pressure button 41 facing down and step on the installation frame 3 for adaptive adjustment. After the measurement is completed, place the chassis 2 on the hollow column 6, step on the pressure button 41 to make the storage grooves on the support plate 21 and the protrusions 61 on the hollow column 6 be in a matching state again to complete the storage.

[0058] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application, using the content recorded in the text and drawings of the specification of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.

Claims

1. An adaptive three-dimensional laser scanner, characterized in that: include: Scanner; A support frame, on which the scanner is mounted, the support frame comprising a fixed plate and three legs connected to the fixed plate; The chassis, the support frame is arranged on the chassis, the chassis includes three support plates and a plurality of V-shaped hinges, each of the support plates is connected to each other in a circumferential manner through each of the V-shaped hinges, each of the V-shaped hinges includes an active state and a locked state, a mounting frame is arranged between each of the support plates, a tension assembly is arranged in the mounting frame, and the tension assembly is used to simultaneously switch the state of each of the V-shaped hinges, the V-shaped hinge includes a V-shaped shell and a rotating rod slidably arranged at both ends of the V-shaped shell, one end of each of the rotating rods is inserted into each of the V-shaped shells, and one end of each of the rotating rods that does not enter the V-shaped shell is rotatably connected to each of the support plates, The diameter of each rotating rod gradually increases from the inserted side to the non-inserted side, and the tension assembly includes a pressing button and a plurality of guide rods, one end of each guide rod is connected to each V-shaped hinge, and the other end of each guide rod penetrates into the installation frame and is provided with a wedge block, and an elastic member is provided on the side of each guide rod away from the wedge block, and a plurality of pressing blocks matching each wedge block are provided under the pressing button; the state of the V-shaped hinge is switched by the tension assembly to adjust the flip angle of each support plate, so as to increase the contact point between the chassis and the uneven ground, stabilize the stability of the support frame erected above it, and thus adapt to different ground conditions; A fixing assembly is arranged on the chassis and is used to fix the bottom end of each of the supporting legs.

2. The adaptive three-dimensional laser scanner according to claim 1, characterized in that: A grinding section is provided on the outer side of each rotating rod, each grinding section occupies 1 / 5-1 / 2 of the length of the corresponding rotating rod, and each grinding section penetrates 1 / 3-1 / 2 into each V-shaped shell.

3. The adaptive three-dimensional laser scanner according to claim 1, characterized in that: The installation frame is circular, an annular groove is arranged on the outer side of the installation frame, and the edges of each support plate are arranged in contact with the annular groove.

4. The adaptive three-dimensional laser scanner according to claim 1, characterized in that: A return spring is arranged in the installation frame, and the return spring is arranged below the pressing button.

5. The adaptive three-dimensional laser scanner according to claim 1, characterized in that: Each of the elastic members is integrally formed with each of the guide rods, and each of the elastic members is a wavy elastic sheet.

6. The adaptive three-dimensional laser scanner according to claim 1, characterized in that: Each of the fixing components comprises a limit block, and each of the limit blocks has an inclined surface on one side. The angle between each of the inclined surfaces and each of the support plates is 60°-90°, and each of the inclined surfaces is provided with an anti-slip layer.

7. The adaptive three-dimensional laser scanner according to claim 6, characterized in that: Each of the fixing components also includes a spring plate arranged on one side of the inclined surface of each of the limiting blocks, each of the spring plates is spaced apart from each of the limiting blocks, a spring sheet is arranged on the side of each of the spring plates away from each of the limiting blocks, and each of the spring plates is non-parallel to each of the inclined surfaces.

8. The adaptive three-dimensional laser scanner according to claim 1, characterized in that: A hollow column is arranged at the bottom of the installation frame.

9. The adaptive three-dimensional laser scanner according to claim 8, characterized in that: A receiving groove is provided at the bottom of each support plate, and the receiving groove is provided on a side of each support plate away from the installation frame. A protrusion matching with each receiving groove is provided on the outer side of the hollow column.

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