Test calibration device for three-dimensional scanning

Abstract

The utility model discloses a test calibration device for three-dimensional scanning. The test calibration device comprises a base, a transmission part and a plurality of limiting mechanisms, the limiting mechanism comprises at least one convex disc and a plurality of limiting assemblies, a plurality of mounting grooves are formed in the circumferential direction of the convex disc, and each limiting assembly comprises two connecting rods with one ends hinged to the groove walls of the mounting grooves, two touch plates arranged at the other ends of the two connecting rods correspondingly and an elastic telescopic rod with the two ends hinged to the two connecting rods correspondingly; the transmission sleeve is rotationally matched with the base and connected with the axis of the transmission part, the multiple limiting mechanisms are distributed in the circumferential direction of the transmission sleeve, and each touch plate can be tightly attached to the surface of the transmission sleeve. According to the utility model, the contact plates are in contact with the outer wall of the transmission sleeve, the two groups of connecting rods are unfolded in a Y shape through the elastic limitation of the elastic telescopic rods, and the two contact plates abut against the transmission sleeve in two directions, so that the transmission sleeve and the base can be kept in a more stable state; and the detection error of the detection equipment caused by mechanical movement when the transmission sleeve rotates is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of three-dimensional scanning, in particular to a testing and calibration device for three-dimensional scanning. Background Art

[0002] A 3D scanner is a scientific instrument that uses 3D scanning technology. During tunnel excavation operations, it is necessary to perform 3D modeling of the excavation site so that construction workers can more accurately grasp the progress and safety of the tunnel excavation project. The 3D scanner is usually placed in a fixed position at the tunnel excavation site, and its optical detection part (including cameras and lidar, etc.) is usually driven by a driving component to rotate one circle to complete the scanning of the tunnel working environment structure. In this process, it is necessary to consider the angle information of the rotation of the light detection part driven by the driving component. Therefore, it is necessary to test and calibrate the angle of rotation of the light detection part driven by the driving device.

[0003] According to a disclosed test and calibration device for a three-dimensional scanner (publication number: CN218159079U), in the above application, a transmission shaft is installed at the axis center of the rotating structure at the bottom of the three-dimensional scanner, and is fixedly connected to the transmission part of the detection component through the transmission shaft. When the three-dimensional scanner is driven to rotate by an external driving device, the detection component can accurately capture the rotation angle information of the three-dimensional scanner through the linkage of the transmission shaft, thereby realizing the test and calibration operation of the three-dimensional scanner.

[0004] However, in actual use of the above-mentioned equipment, the 3D scanner and the supporting equipment at the bottom are connected by the transmission parts of the driving device, and the transmission parts need to be synchronously connected to the transmission shaft to drive the detection equipment to move synchronously. This will make the movement of the 3D scanner on the supporting equipment prone to instability, and even cause large precision errors in the process of stopping the rotation, affecting the data accuracy of the detection and calibration operations. In view of this, we propose a test and calibration device for 3D scanners. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a test calibration device for three-dimensional scanning which can reduce the error of detection data.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: A test and calibration device for three-dimensional scanning, involving a three-dimensional scanner with a transmission sleeve arranged at the bottom, comprising a base, a transmission part rotatably arranged in the base, and a plurality of limiting mechanisms rotatably arranged in the base;

[0007] The limiting mechanism includes at least one convex plate and a plurality of limiting components, a plurality of mounting grooves corresponding to the plurality of limiting components are opened on the circumference of the convex plate, and the limiting components include two connecting rods with one end hinged to the groove wall of the mounting groove, two touch plates respectively arranged at the other ends of the two connecting rods, and elastic telescopic rods with two ends respectively hinged to the two connecting rods;

[0008] The transmission sleeve is rotatably matched with the base, and the transmission sleeve is connected to the axis of the transmission part. A plurality of limiting mechanisms are distributed along the circumference of the transmission sleeve, and each of the touch plates can be closely attached to the surface of the transmission sleeve.

[0009] Furthermore, the touch plate is provided with a plurality of installation grooves, and a fixed shaft is arranged in the installation groove, and an auxiliary positioning plate is arranged on the fixed shaft for rotation along the rotation direction of the transmission sleeve, and the auxiliary positioning plate is connected to the corresponding fixed shaft through a volute spring, and the auxiliary positioning plate can contact the surface of the transmission sleeve.

[0010] Furthermore, the auxiliary positioning plate is arc-shaped, and a surface of the auxiliary positioning plate corresponding to the contact with the transmission sleeve is provided with a plurality of groups of ridges, and the plurality of groups of ridges are arranged in sequence along the rotation direction.

[0011] Furthermore, it also includes an electromagnetic ring arranged in the transmission sleeve, and the limiting mechanism also includes a round rod with a movement trajectory approaching or moving away from the transmission sleeve, a limiting wheel rotatably arranged on the round rod, and a magnetic ring arranged outside the limiting wheel, the convex disc is arranged on the limiting wheel and is concentric with the limiting wheel, and the electromagnetic ring can attract or repel the magnetic ring to realize the round rod approaching or moving away from the transmission sleeve.

[0012] Furthermore, the transmission sleeve is provided with a limiting groove along its circumference, and the limiting wheel can be inserted into the limiting groove, and the side surface of the convex disc can contact the edge of the transmission sleeve corresponding to the outside of the limiting groove.

[0013] Furthermore, the transmission sleeve is also provided with a limiting ring along its circumference, and a limiting groove matched with the limiting ring is opened on the inner wall of the base, and the limiting ring is rotatably matched with the limiting groove.

[0014] The beneficial effects of the utility model are embodied in:

[0015] The utility model is used for the test and calibration device of three-dimensional scanning. When the three-dimensional scanner moves to the target position for scanning, the test and calibration device is connected to the transmission sleeve through the transmission part, and the rotation of the three-dimensional scanner is realized by rotating the transmission part. By setting a plurality of limiting mechanisms, each of the limiting mechanisms includes a plurality of limiting components. When the three-dimensional scanner rotates, the touch plate of the limiting component contacts the outer wall of the transmission sleeve, and the two groups of connecting rods are expanded in a Y shape through the elastic force limitation of the elastic telescopic rod, so that the two touch plates are respectively pressed against the transmission sleeve in two directions, so that the transmission sleeve and the base can maintain a more stable state, so as to effectively reduce the detection error of the detection equipment caused by the mechanical movement when the transmission sleeve rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the test and calibration device for three-dimensional scanning of the utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of the test and calibration device for three-dimensional scanning of the utility model;

[0018] Figure 3 This is a cross-sectional view of the transmission sleeve structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the limiting component of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the touch panel of the utility model;

[0021] Figure 6 It is an exploded schematic diagram of the auxiliary positioning plate of the utility model.

[0022] The components in the accompanying drawings are marked as follows: 1. transmission sleeve; 101. limiting groove; 2. three-dimensional scanner; 201. mounting frame; 202. scanner body; 3. base; 4. transmission part; 5. convex plate; 501. mounting groove; 6. limiting assembly; 601. connecting rod; 602. touch plate; 6021. groove; 603. elastic telescopic rod; 604. fixed shaft; 605. auxiliary positioning plate; 606. volute spring; 607. convex ridge; 7. electromagnetic ring; 8. round rod; 9. limiting wheel; 10. limiting ring; 11. transmission shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5 .

[0025] The utility model is a test and calibration device for three-dimensional scanning, which relates to a three-dimensional scanner 2 with a transmission sleeve 1 arranged at the bottom, including a base 3, a transmission part 4 rotatably arranged in the base 3, and a plurality of limiting mechanisms rotatably arranged in the base 3;

[0026] The limiting mechanism includes at least one convex plate 5 and a plurality of limiting components 6. The convex plate 5 is provided with a plurality of mounting grooves 501 corresponding to the plurality of limiting components 6 on a circumferential direction. The limiting components 6 include two connecting rods 601 with one end hinged to the groove wall of the mounting groove 501, two touch plates 602 respectively arranged at the other ends of the two connecting rods 601, and elastic telescopic rods 603 with two ends respectively hinged to the two connecting rods 601.

[0027] The transmission sleeve 1 is rotatably matched with the base 3 , and the transmission sleeve 1 is axially connected to the transmission part 4 . A plurality of limiting mechanisms are distributed circumferentially along the transmission sleeve 1 , and each of the touch plates 602 can be tightly attached to the surface of the transmission sleeve 1 .

[0028] In this embodiment, the three-dimensional scanner 2 includes a mounting frame 201 and a scanner body 202 disposed on the mounting frame 201, and the transmission sleeve 1 is disposed at the bottom of the scanner body 202;

[0029] In this embodiment, the surface of the touch panel 602 is in an arc shape that can fit the surface of the transmission sleeve 1, which helps to better grasp the transmission sleeve 1;

[0030] In this embodiment, the elastic telescopic rod 603 can be directly obtained from the prior art, and will not be described in detail here;

[0031] In this embodiment, two protruding discs 5 can be provided and spaced apart;

[0032] In this embodiment, the transmission part 4 is the transmission part of the angle detection device, the transmission sleeve 1 and the transmission part 4 are axially connected through the transmission shaft 11, and the transmission shaft 11 is fixed to the transmission part 4 and detachably connected to the transmission sleeve 1. A driving device is arranged inside the base 3, and the output part of the driving device is connected to the transmission sleeve 1, so that when the driving device is started, the transmission sleeve 1 can be controlled to rotate on the base 3, and the angle detection is realized by driving the transmission part 4 to rotate;

[0033] With this design, when the three-dimensional scanner 2 moves to the target position for scanning, the touch plate 602 of the limiting component 6 contacts the outer wall of the transmission sleeve 1, and the two sets of connecting rods 601 are expanded in a Y shape through the elastic force limitation of the elastic telescopic rod 603, so that the two touch plates 602 are respectively pressed against the transmission sleeve 1 in two directions, so that the transmission sleeve 1 and the base 3 can maintain a more stable state, so as to effectively reduce the detection error of the detection equipment caused by the mechanical movement when the transmission sleeve 1 rotates.

[0034] In one embodiment, see Figure 6 , the touch plate 602 is also provided with a plurality of grooves 6021, and a fixed shaft 604 is arranged in the groove 6021, and an auxiliary positioning plate 605 is arranged on the fixed shaft 604 to rotate along the rotation direction of the transmission sleeve 1, and the auxiliary positioning plate 605 is connected to the corresponding fixed shaft 604 through a volute spring 606, and the auxiliary positioning plate 605 can contact the surface of the transmission sleeve 1. In this embodiment, the groove 6021 is arranged along the vertical direction. In this design, under the elastic force restriction of the volute spring 606, it deflects with the fixed shaft 604 as the rotation axis, so as to better grasp the transmission sleeve 1 and maintain the stable state of the transmission sleeve 1.

[0035] In one embodiment, see Figure 6 The auxiliary positioning plate 605 is arc-shaped, and the surface of the auxiliary positioning plate 605 corresponding to the contact with the transmission sleeve 1 is provided with multiple groups of ridges 607, and the multiple groups of ridges 607 are sequentially arranged along the rotation direction. In this design, by providing the ridges 607, the gripping effect of the transmission sleeve 1 is further enhanced.

[0036] In one embodiment, see Figure 3 and Figure 4, and also includes an electromagnetic ring 7 arranged in the transmission sleeve 1, the limiting mechanism also includes a round rod 8 with a motion trajectory approaching or moving away from the transmission sleeve 1, a limiting wheel 9 rotatably arranged on the round rod 8, and a magnetic ring arranged outside the limiting wheel 9, the convex plate 5 is arranged on the limiting wheel 9 and is concentric with the limiting wheel 9, and the electromagnetic ring 7 can attract or repel the magnetic ring to achieve the round rod 8 approaching or moving away from the transmission sleeve 1. In this embodiment, when the three-dimensional scanner 2 moves to the target position for scanning, the electromagnetic ring 7 can achieve attraction with the magnetic ring, so that the limiting wheel 9 drives the round rod 8 to move toward one side of the transmission sleeve 1. At this time, the arc-shaped outer wall of the convex plate 5 is close to the notch edge of the limiting groove 101, so that the touch plate 602 of the limiting component 6 contacts the transmission sleeve 1. When not scanning, the electromagnetic ring 7 can achieve repulsion with the magnetic ring, so that the limiting wheel 9 drives the round rod 8 to move away from the transmission sleeve 1.

[0037] In one embodiment, see Figure 3 The transmission sleeve 1 is provided with a limiting groove 101 along its circumference, and the limiting wheel 9 can penetrate into the limiting groove 101, and the side of the convex plate 5 can contact the edge of the transmission sleeve 1 corresponding to the limiting groove 101. In this design, the limiting wheel 9 penetrates into the limiting groove 101 to achieve stable rotation of the limiting wheel 9, so that the limiting assembly 6 and the transmission sleeve 1 are in stable contact.

[0038] In one embodiment, see Figure 2 The transmission sleeve 1 is also provided with a limiting ring 10 along its circumference, and a limiting groove 101 adapted to the limiting ring 10 is provided on the inner wall of the base 3, and the limiting ring 10 is rotatably matched with the limiting groove 101. This design ensures the stability of the transmission sleeve 1 when rotating in the base 3, thereby ensuring the accuracy of the detection data of the detection equipment.

[0039] In summary, the test and calibration device for three-dimensional scanning of the utility model:

[0040] 1. When the three-dimensional scanner 2 moves to the target position for scanning, it is connected to the transmission sleeve 1 through the transmission part 4, and the rotation of the three-dimensional scanner 2 is realized by rotating the transmission part 4. By setting a plurality of limiting mechanisms, each of the limiting mechanisms includes a plurality of limiting components 6. When the three-dimensional scanner 2 rotates, the touch plate 602 of the limiting component 6 contacts the outer wall of the transmission sleeve 1, and the two groups of connecting rods 601 are extended in a Y shape through the elastic force of the elastic telescopic rod 603, so that the two touch plates 602 are respectively pressed against the transmission sleeve 1 in two directions, so that the transmission sleeve 1 and the base 3 can maintain a more stable state, so as to effectively reduce the detection error of the detection equipment caused by the mechanical movement when the transmission sleeve 1 rotates;

[0041] 2. By providing a convex ridge 607 on the auxiliary positioning plate 605, under the elastic force restriction of the spiral spring 606, the spiral spring 606 is deflected with the fixed shaft 604 as the rotation axis, so as to better grasp the transmission sleeve 1 and maintain the stable state of the transmission sleeve 1.

[0042] It should be understood that the examples and implementation modes described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on the examples and implementation modes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0043] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that satisfy both A and B. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

Claims

1. A test and calibration device for three-dimensional scanning, comprising a three-dimensional scanner (2) having a transmission sleeve (1) arranged at the bottom, characterized in that: It comprises a base (3), a transmission part (4) rotatably arranged in the base (3), and a plurality of limiting mechanisms rotatably arranged in the base (3); The limiting mechanism comprises at least one convex disc (5) and a plurality of limiting components (6); a plurality of mounting grooves (501) corresponding to the plurality of limiting components (6) are provided on the circumference of the convex disc (5); the limiting components (6) comprise two connecting rods (601) with one end hinged to the groove wall of the mounting groove (501), two touch plates (602) respectively arranged at the other ends of the two connecting rods (601), and an elastic telescopic rod (603) with two ends respectively hinged to the two connecting rods (601); The transmission sleeve (1) is rotatably matched with the base (3), and the transmission sleeve (1) is axially connected to the transmission part (4), a plurality of limiting mechanisms are distributed along the circumference of the transmission sleeve (1), and each of the touch plates (602) can be tightly attached to the surface of the transmission sleeve (1).

2. The test and calibration device for three-dimensional scanning according to claim 1, characterized in that: The touch plate (602) is also provided with a plurality of grooves (6021), and a fixed shaft (604) is arranged in the groove (6021), and an auxiliary positioning plate (605) is arranged on the fixed shaft (604) to rotate along the rotation direction of the transmission sleeve (1), and the auxiliary positioning plate (605) is connected to the corresponding fixed shaft (604) through a spiral spring (606), and the auxiliary positioning plate (605) can contact the surface of the transmission sleeve (1).

3. The test and calibration device for three-dimensional scanning according to claim 2, characterized in that: The auxiliary positioning plate (605) is arc-shaped, and the surface of the auxiliary positioning plate (605) that contacts the transmission sleeve (1) is provided with multiple groups of ridges (607), and the multiple groups of ridges (607) are arranged in sequence along the rotation direction.

4. The test and calibration device for three-dimensional scanning according to claim 1, characterized in that: The invention also comprises an electromagnetic ring (7) arranged in the transmission sleeve (1); the limiting mechanism also comprises a round rod (8) having a movement trajectory approaching or moving away from the transmission sleeve (1), a limiting wheel (9) rotatably arranged on the round rod (8), and a magnetic ring arranged outside the limiting wheel (9); the convex disc (5) is arranged on the limiting wheel (9) and is concentric with the limiting wheel (9); the electromagnetic ring (7) can attract or repel the magnetic ring to achieve the round rod (8) approaching or moving away from the transmission sleeve (1).

5. The test and calibration device for three-dimensional scanning according to claim 4, characterized in that: The transmission sleeve (1) is provided with a limiting groove (101) along its circumference, and the limiting wheel (9) can be inserted into the limiting groove (101), and the side surface of the convex plate (5) can contact the edge of the transmission sleeve (1) corresponding to the outside of the limiting groove (101).

6. The test and calibration device for three-dimensional scanning according to claim 1, characterized in that: The transmission sleeve (1) is also provided with a limiting ring (10) along its circumference, and a limiting groove (101) adapted to the limiting ring (10) is provided on the inner wall of the base (3), and the limiting ring (10) is rotatably matched with the limiting groove (101).

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