A support frame for 3D laser scanner measurement

Abstract

A support frame for 3D laser scanner measurement includes: a base, fixed legs, a fixed pan / tilt head, a first height fine-tuning unit, and a second height fine-tuning unit. The 3D laser scanner is mounted on top of the base, and the fixed legs are pivotally connected to the bottom of the base. The fixed legs are positioned on the ground. The fixed pan / tilt head is positioned between the base and the 3D laser scanner. The first height fine-tuning unit is located below the fixed pan / tilt head, extending from the top to the bottom of the base. The second height fine-tuning unit is located inside the first height fine-tuning unit, extending from the top of the fixed pan / tilt head to the bottom of the first height fine-tuning unit. This invention solves the technical problem of the limited vertical field of view of the 3D laser scanner, resulting in a scanning blind zone near the bottom of the support frame, and avoids the technical problem of the fixed legs of the support frame swinging after being brought together, leading to damage to the fixed legs.

Description

Technical Field

[0001] This utility model relates to the field of support frame technology, and in particular to a support frame used in 3D laser scanner measurement. Background Technology

[0002] A 3D laser scanner is a device that rapidly acquires 3D point cloud data of an object or environment surface using laser ranging technology. It is widely used in surveying, engineering, archaeology, architecture, and industrial inspection. Depending on the method of use, 3D laser scanners are categorized into fixed ground-based 3D laser scanners, handheld 3D laser scanners, and mobile 3D laser scanners. Fixed 3D laser scanners typically require a support frame to stabilize the equipment and ensure its stability during the scanning process.

[0003] Existing support frames are usually fixed pan-tilt heads. These pan-tilt heads only provide horizontal leveling functions and lack vertical fine-tuning mechanisms, resulting in a limited vertical field of view for 3D laser scanners. The support frame itself or surrounding objects (such as ground protrusions) can obstruct the scanning field of view, creating scanning blind spots near the bottom of the support frame. In addition, when not in use, the fixed legs of existing support frames are simply gathered together. When moving the support frame, individual fixed legs are prone to swinging, which can damage the connection points of the fixed legs.

[0004] Therefore, it is desirable to have a support frame for 3D laser scanner measurements that can solve the defects and problems existing in the current technology. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings and deficiencies of the prior art, this utility model provides a support frame for measurement by a 3D laser scanner, which solves the problem of the limited vertical field of view of the 3D laser scanner and the existence of scanning blind spots in the area near the bottom of the support frame, and avoids the technical problem of the fixed legs of the support frame swinging after being brought together, which would lead to damage to the fixed legs.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model employs a support frame for 3D laser scanner measurement, including a base and fixed legs. The 3D laser scanner is mounted on the top of the base, and the fixed legs are pivotally connected to the bottom of the base. The fixed legs are set on the ground. The support frame also includes: a fixed gimbal, a first height fine-tuning unit, and a second height fine-tuning unit.

[0009] A fixed gimbal is positioned between the base and the 3D laser scanner. A first height adjustment unit is located below the fixed gimbal, extending from the top to the bottom of the base. The first height adjustment unit adjusts the height position of the fixed gimbal. A second height adjustment unit is located inside the first height adjustment unit, extending from the top of the fixed gimbal to the bottom of the first height adjustment unit. The second height adjustment unit adjusts the height position of the 3D laser scanner relative to the fixed gimbal.

[0010] This utility model discloses a support frame for 3D laser scanner measurement. By using a first height fine-tuning unit and a second height fine-tuning unit in combination, the vertical field of view of the 3D laser scanner can be expanded, avoiding scanning blind spots near the bottom of the support frame and preventing deviations in the 3D scanning data.

[0011] Preferably, the first height fine-tuning unit includes a washer, a threaded sleeve, and a first fine-tuning nut. One end of the threaded sleeve is welded with a washer, which is located below the fixed gimbal. The other end is welded with a first fine-tuning nut. The threaded sleeve passes through the center of the base, and the center of the base is provided with a first internal thread, which matches the external thread of the threaded sleeve.

[0012] Preferably, the second height fine-tuning unit includes a flat-head bolt and a second fine-tuning nut. The top of the flat-head bolt is positioned above the fixed gimbal and connected to the 3D laser scanner. The bottom of the flat-head bolt is welded to the second fine-tuning nut. The flat-head bolt passes through the center of the fixed gimbal and the first height fine-tuning unit. The center of the fixed gimbal is provided with a second internal thread, which matches the external thread of the flat-head bolt.

[0013] Preferably, a guide rod is welded below the fixed gimbal, and the guide rod passes through the base.

[0014] Preferably, the support frame further includes a connecting plate and a fixing plate, one end of the connecting plate being pivotally connected to the inner side of the fixing leg, and the other end being engaged in the groove of the fixing plate.

[0015] Preferably, the number of connecting plates is equal to the number of fixed legs.

[0016] Preferably, the grooves are evenly spaced around the circumference of the fixed plate, the grooves are circular with a large semicircle notch, and the number of grooves is equal to the number of connecting plates.

[0017] Preferably, the support frame further includes a telescopic leg, a fixing collar, and a fixing bolt. One end of the telescopic leg is installed inside the fixing foot, and the other end is pointed and set on the ground. The fixing foot has a sliding groove inside, and the telescopic leg moves in the sliding groove. The fixing foot has a threaded fixing hole and a fixing collar below it. The fixing bolt fixes the position of the telescopic leg in the sliding groove through the fixing collar and the threaded fixing hole in sequence.

[0018] Preferably, the support frame further includes a shoulder strap, which is disposed on the outer surface of any one of the fixed legs.

[0019] (III) Beneficial Effects

[0020] This utility model discloses a support frame for use in 3D laser scanner measurements, which has the following advantages:

[0021] 1. The support frame of this application adjusts the height of the fixed gimbal in the vertical direction through the first height fine-tuning unit, thereby expanding the vertical field of view of the three-dimensional laser scanner.

[0022] 2. The support frame of this application uses a second height fine-tuning unit to fine-tune the gap between the 3D laser scanner and the fixed pan-tilt unit, so as to prevent the fixed pan-tilt unit, the support frame itself, or surrounding objects (such as ground protrusions) from obstructing the scanning field of view of the 3D laser scanner and forming a scanning blind zone in the area near the bottom of the support frame.

[0023] 3. This application uses connecting plates and fixing discs on the fixed legs of the support frame to snap multiple fixed legs together as a whole, effectively preventing individual legs from swinging after the fixed legs are gathered together, and avoiding damage to the connection of individual legs. Attached Figure Description

[0024] Figure 1 This is a front structural diagram of the support frame of this utility model applied to 3D laser scanner measurement.

[0025] Figure 2 This is a cross-sectional schematic diagram of the support frame of this utility model applied to 3D laser scanner measurement.

[0026] Figure 3 This is a schematic diagram of the connecting plate and fixing plate structure of the support frame of this utility model.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1: Base; 2: Fixed support leg; 3: Telescopic leg; 4: Threaded sleeve; 5: Fixed gimbal; 6: First fine-tuning nut; 7: Flat head bolt; 8: Second fine-tuning nut; 9: Connecting assembly; 901: Connecting plate; 902: Fixed plate; 10: Fixed collar; 11: Fixed bolt; 12: Guide rod; 13: Shoulder strap; 14: Groove. Detailed Implementation

[0029] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," "left," and "right" are used interchangeably. Figure 1 The orientation is used as a reference.

[0030] This utility model discloses a support frame for 3D laser scanner measurement, comprising a base and fixed legs. The 3D laser scanner is mounted on top of the base, and the fixed legs are pivotally connected to the bottom of the base. The fixed legs are set on the ground. The support frame further includes: a fixed pan-tilt head, a first height fine-tuning unit, and a second height fine-tuning unit. The fixed pan-tilt head is positioned between the base and the 3D laser scanner. The first height fine-tuning unit is located below the fixed pan-tilt head, extending from the top to the bottom of the base, and adjusts the height position of the fixed pan-tilt head. The second height fine-tuning unit is located inside the first height fine-tuning unit, extending from the top of the fixed pan-tilt head to the bottom of the first height fine-tuning unit, and adjusts the height position of the 3D laser scanner relative to the fixed pan-tilt head.

[0031] The support frame proposed in this embodiment for measurement with a 3D laser scanner uses a first height fine-tuning unit to adjust the height of the fixed gimbal, thereby expanding the vertical field of view of the 3D laser scanner. It also uses a second height fine-tuning unit to fine-tune the gap between the 3D laser scanner and the fixed gimbal, thus avoiding the formation of scanning blind spots.

[0032] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0033] Example 1:

[0034] like Figure 1-2 As shown, the support frame used for 3D laser scanner measurement includes a base 1, fixed legs 2, telescopic legs 3, a first height fine-tuning unit, a fixed gimbal 5, a second height fine-tuning unit, a connecting assembly 9, a fixing collar 10, a fixing bolt 11, a guide rod 12, and a shoulder strap 13. The 3D laser scanner is mounted on the top of the base 1, and the fixed legs 2 are pivotally connected to the bottom of the base 1. The fixed legs 2 are set on the ground, and the fixed gimbal 5, the first height fine-tuning unit, and the second height fine-tuning unit are also included.

[0035] A fixed gimbal 5 is positioned between the base 1 and the 3D laser scanner. A first height fine-tuning unit is located below the fixed gimbal 5, extending from the top to the bottom of the base 1. The first height fine-tuning unit adjusts the height position of the fixed gimbal 5. A second height fine-tuning unit is located inside the first height fine-tuning unit, extending from the top to the bottom of the first height fine-tuning unit. The second height fine-tuning unit adjusts the height position of the 3D laser scanner relative to the fixed gimbal 5. A connecting component 9 is provided on the fixed support leg 2.

[0036] The first height fine-tuning unit includes a washer, a threaded sleeve 4, and a first fine-tuning nut 6. One end of the threaded sleeve 4 is welded with a washer, which is located below the fixed gimbal 5. The other end is welded with the first fine-tuning nut 6. The threaded sleeve 4 passes through the center of the base 1, where a first internal thread is provided. The first internal thread matches the external thread of the threaded sleeve 4. When the first fine-tuning nut 6 is rotated, the threaded sleeve 4 moves up and down, and the fixed gimbal 5 also moves up and down accordingly.

[0037] The second height fine-tuning unit includes a flat-head bolt 7 and a second fine-tuning nut 8. The top of the flat-head bolt 7 is positioned above the fixed gimbal 5 and connected to the 3D laser scanner. The bottom of the flat-head bolt 7 is welded to the second fine-tuning nut 8. The flat-head bolt 7 passes through the center of the fixed gimbal 5 and the first height fine-tuning unit. The center of the fixed gimbal 5 is provided with a second internal thread, which matches the external thread of the flat-head bolt 7. By rotating the second fine-tuning nut 8, the flat-head bolt 7 can be moved up and down to adjust the distance between the 3D laser scanner and the fixed gimbal 5.

[0038] Three guide rods 12 are welded below the fixed gimbal 5. In one embodiment not shown, four guide rods are welded below the fixed gimbal. The guide rods 12 pass through the base 1. When the fixed gimbal 5 moves up and down, the fixed gimbal 5 slides along the surface of the guide rods 12, which serves as a guide.

[0039] One end of the telescopic leg 3 is installed inside the fixed support leg 2, and the other end is pointed and set on the ground. The fixed support leg 2 has a sliding groove inside, and the telescopic leg 3 moves in the sliding groove. The fixed support leg 2 has a threaded fixing hole and a fixing collar 10 respectively below it. The fixing bolt 11 fixes the position of the telescopic leg 3 in the sliding groove through the fixing collar 10 and the threaded fixing hole in sequence. The overall height of the support frame can be adjusted by adjusting the length of the telescopic leg 3 extending out of the fixed support leg 2.

[0040] A carrying strap 13 is installed on the outer surface of any one of the fixed legs 2 to facilitate the handling and carrying of the support frame.

[0041] Example 2:

[0042] A support frame for 3D laser scanner measurement includes a base 1, fixed legs 2, telescopic legs 3, a first height fine-tuning unit, a fixed gimbal 5, a second height fine-tuning unit, a connecting assembly 9, a fixing collar 10, a fixing bolt 11, a guide rod 12, and a shoulder strap 13. The 3D laser scanner is mounted on the top of the base 1, and the fixed legs 2 are pivotally connected to the bottom of the base 1. The fixed legs 2 are set on the ground. The fixed gimbal 5, the first height fine-tuning unit, and the second height fine-tuning unit are also included.

[0043] A fixed gimbal 5 is positioned between the base 1 and the 3D laser scanner. A first height fine-tuning unit is located below the fixed gimbal 5, extending from the top to the bottom of the base 1. The first height fine-tuning unit adjusts the height position of the fixed gimbal 5. A second height fine-tuning unit is located inside the first height fine-tuning unit, extending from the top to the bottom of the first height fine-tuning unit. The second height fine-tuning unit adjusts the height position of the 3D laser scanner relative to the fixed gimbal 5. A connecting component 9 is provided on the fixed support leg 2.

[0044] like Figure 3 As shown, the connecting assembly 9 includes a connecting plate 901 and a fixing plate 902. One end of the connecting plate 901 is pivotally connected to the inner side of the fixing leg 2, and the other end is engaged in the groove 14 of the fixing plate 902. The number of connecting plates 901 is equal to the number of fixing legs 2. The grooves 14 are evenly spaced around the circumference of the fixing plate 902. The grooves 14 are circular notches with a large semicircle. The number of grooves 14 is equal to the number of connecting plates 901.

[0045] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this utility model, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A support frame applied to the measurement of a three-dimensional laser scanner, comprising a base (1) and a fixed leg (2), a three-dimensional laser scanner is installed above the base (1), the fixed leg (2) is pivotally connected below the base (1), and the fixed leg (2) is arranged on the ground, characterized in that, The support frame also includes: a fixed gimbal (5), a first height fine-tuning unit, and a second height fine-tuning unit; A fixed gimbal (5) is set between the base (1) and the 3D laser scanner. A first height fine-tuning unit is set below the fixed gimbal (5). The first height fine-tuning unit extends from the top of the base (1) to the bottom. The first height fine-tuning unit adjusts the height position of the fixed gimbal (5). A second height fine-tuning unit is set inside the first height fine-tuning unit. The second height fine-tuning unit extends from the top of the fixed gimbal (5) to the bottom of the first height fine-tuning unit. The second height fine-tuning unit adjusts the height position of the 3D laser scanner from the fixed gimbal (5).

2. The support frame for use in the measurement of a three-dimensional laser scanner according to claim 1, characterized in that: The first height fine-tuning unit includes a washer, a threaded sleeve (4) and a first fine-tuning nut (6). One end of the threaded sleeve (4) is welded with a washer, which is located below the fixed gimbal (5). The other end is welded with a first fine-tuning nut (6). The threaded sleeve (4) passes through the center of the base (1). The center of the base (1) is provided with a first internal thread, which matches the external thread of the threaded sleeve (4).

3. The support frame for three-dimensional laser scanner measurement according to claim 2, characterized in that: The second height fine-tuning unit includes a flat-head bolt (7) and a second fine-tuning nut (8). The top of the flat-head bolt (7) is positioned above the fixed gimbal (5) and connected to the three-dimensional laser scanner. The bottom of the flat-head bolt (7) is welded with the second fine-tuning nut (8). The flat-head bolt (7) passes through the center of the fixed gimbal (5) and the first height fine-tuning unit. The center of the fixed gimbal (5) is provided with a second internal thread, which matches the external thread of the flat-head bolt (7).

4. The support frame for three-dimensional laser scanner measurement according to claim 3, characterized in that: The guide rod (12) is welded below the fixed gimbal (5), and the guide rod (12) passes through the base (1).

5. The support frame for three-dimensional laser scanner measurement according to claim 4, characterized in that: The support frame further includes a connecting plate (901) and a fixing plate (902). One end of the connecting plate (901) is pivotally connected to the inside of the fixing leg (2), and the other end is engaged in the groove (14) of the fixing plate (902).

6. The support frame for three-dimensional laser scanner measurement according to claim 5, characterized in that: The number of connecting plates (901) is equal to the number of fixed legs (2).

7. The support frame for three-dimensional laser scanner measurement according to claim 6, characterized in that: The grooves (14) are evenly spaced around the circumference of the fixed plate (902). The grooves (14) are circular with a large semi-circular notch. The number of grooves (14) is equal to the number of connecting plates (901).

8. The support frame for three-dimensional laser scanner measurement according to claim 1, characterized in that: The support frame further includes a telescopic leg (3), a fixing collar (10), and a fixing bolt (11). One end of the telescopic leg (3) is installed inside the fixing foot (2), and the other end is pointed and set on the ground. The fixing foot (2) has a sliding groove inside, and the telescopic leg (3) moves in the sliding groove. The fixing foot (2) has a threaded fixing hole and a fixing collar (10) respectively below it. The fixing bolt (11) fixes the position of the telescopic leg (3) in the sliding groove through the fixing collar (10) and the threaded fixing hole in sequence.

9. The support frame for three-dimensional laser scanner measurement according to claim 1, characterized in that: The support frame further includes a shoulder strap (13), which is disposed on the outer surface of any of the fixed legs (2).

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