Portable positioning bracket structure for laser scanning of underground pipe networks
By using the adjustment and locking mechanism of the portable positioning bracket structure, the problem of the large size and weight of the laser scanning bracket for underground pipelines has been solved, thus improving portability and stability, and making it suitable for a variety of mobile devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 大唐株洲发电有限责任公司
- Filing Date
- 2025-10-14
- Publication Date
- 2026-08-04
AI Technical Summary
Existing laser scanning supports for underground pipelines are large and heavy, making them inconvenient to handle manually in daily operations.
A portable positioning bracket structure was designed. The travel of the fixed rod extension length is doubled through the adjustment mechanism, and a locking mechanism is combined to form a two-way self-locking, which reduces the volume occupied and ensures stable adjustment. It is suitable for mobile devices such as inspection vehicles or unmanned vehicles.
It achieves the goal of meeting adjustment requirements while reducing the size of the bracket, making it easy to handle manually, and expands the scope of application through connectors, thereby improving the portability and stability of the equipment.
Smart Images
Figure CN224593023U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline maintenance technology, specifically a portable positioning support structure for laser scanning of underground pipeline networks. Background Technology
[0002] Underground pipeline laser scanning is a non-contact measurement method based on three-dimensional laser scanning technology. It uses high-density laser beams to quickly scan underground pipelines and ancillary facilities (such as valves, manholes, and elbows) to generate a high-precision point cloud model. This technology can accurately capture details such as the spatial position, deformation, corrosion, and interface misalignment of pipelines. It is widely used in the inspection, acceptance, maintenance assessment, and digital management of urban water supply, drainage, gas, heating, and power pipelines. It has advantages such as high efficiency, high precision, and strong safety. However, existing scanning and positioning supports are large and heavy, making them inconvenient for daily manual handling.
[0003] In view of the above, this application is hereby submitted. Utility Model Content
[0004] The purpose of this invention is to provide a portable positioning support structure for laser scanning of underground pipelines, so as to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides a portable positioning support structure for laser scanning of underground pipelines, including a scanning device body and a fixing plate. Multiple fixing cylinders are installed at the bottom of the fixing plate in a circular array along its axial direction. A fixing rod slides through the interior of the fixing cylinder at the end furthest from the fixing plate along its length. An adjustment mechanism is connected to the end of the fixing rod near the fixing plate. The adjustment mechanism is located inside the fixing cylinder and includes: A rack rod is fixed to one side of the fixed cylinder along the width direction of the fixed cylinder at the end of the fixed rod near the fixed plate, and the length direction of the rack rod is parallel to the length direction of the fixed cylinder. A rack rod with the same structure is fixed on the side wall of the fixed cylinder away from the rack rod. The two rack rods are meshed with the same gear on the side that is close to each other. The gear axis is consistent with the thickness direction of the fixed cylinder and the gear slides on the inner side wall of the fixed cylinder. The gear is axially connected to a locking mechanism, which is rotatably installed through the fixed cylinder.
[0006] Furthermore, the rack rod fixed to the end of the fixed rod slides on the inner wall of the fixed cylinder. The gear is coaxially connected to the slider on the side wall away from the locking mechanism along the axial direction. The end of the slider away from the gear slides on the inner wall of the fixed cylinder. When the end of the fixed rod near the fixed plate abuts against the end of the rack rod fixed on the inner wall of the fixed cylinder, the gear moves to the end of the rack rod fixed on the inner wall of the fixed cylinder near the fixed plate. A sliding channel is opened on the side wall of the fixed cylinder along its length direction at the position corresponding to the locking mechanism. The sliding channel is provided through the fixed cylinder along its thickness direction. A connecting shaft is coaxially fixed on the side wall of the gear near the sliding channel. The connecting shaft slides in the sliding channel. The end of the connecting shaft away from the gear is coaxially connected to the locking mechanism.
[0007] Furthermore, the locking mechanism provided in the gear axis includes a fixing block coaxially fixed to the end of the connecting shaft, a fixing ring slidably sleeved on the outside of the fixing block, both the fixing block and the fixing ring being provided on the outside of the fixing cylinder and the bottom end of the fixing ring sliding on the fixing cylinder, a limiting block one being coaxially fixed on the side wall of the fixing block away from the connecting shaft, a knob being coaxially fixed on the end of the limiting block one away from the fixing block, the limiting block one being provided on the inside of the fixing ring and the knob being provided on the outside of the fixing ring, a limiting groove being provided on the outer arc wall of the limiting block one along its circumference, the limiting groove being provided through the limiting block one along its axial direction.
[0008] Furthermore, a second limiting block is provided in the limiting groove on the first limiting block. The second limiting block is vertically fixed to the outer edge of the side wall of the fixed block away from the connecting shaft. A coil spring is sleeved on the outside of the first limiting block. The outer arc wall of the coil spring rubs against the inner arc wall of the fixed ring. Both ends of the coil spring are fixed with elbows. The length direction of the elbows is parallel to the radial direction of the first limiting block and both extend into the limiting groove. Connecting pieces are fixed to the side walls of two opposite fixed cylinders that are far away from each other, respectively, at the end far away from the fixed plate.
[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. By adjusting the mechanism, the extension length of the fixed rod is doubled, which allows for adjustment while reducing the size of the bracket body, thereby reducing the volume occupied and making it easier to handle manually.
[0010] 2. A two-way self-locking mechanism is formed through the locking mechanism, thereby preventing retraction caused by external force after adjustment and ensuring stable adjustment.
[0011] 3. The connectors can be used to fix it to a walking device, such as an inspection vehicle or an unmanned vehicle, thus expanding its application range. Attached Figure Description
[0012] Figure 1 A schematic diagram of the overall structure of a portable positioning support for laser scanning of underground pipelines. Figure 1 ; Figure 2 A schematic diagram of the overall structure of a portable positioning support for laser scanning of underground pipelines. Figure 2 ; Figure 3 This is a schematic diagram showing the connection relationship between the adjustment mechanism and the fixed rod in the structure of a portable positioning bracket used for laser scanning of underground pipelines. Figure 4 This is an exploded view of the adjustment and locking mechanisms in a portable positioning support structure used for laser scanning of underground pipe networks.
[0013] In the picture: 10. Scanning device body; 11. Fixing plate; 12. Fixing cylinder; 13. Fixing rod; 14. Connecting piece; 15. Knob; 16. Gear; 17. Rack and pinion; 20. Fixing block; 21. Limiting block one; 22. Limiting block two; 23. Coil spring; 24. Fixing ring. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see the appendix Figure 1 To be continued Figure 4 The portable positioning support structure for laser scanning of underground pipelines provided by this utility model includes a scanning device body 10 and a fixing plate 11. Multiple fixing cylinders 12 arranged in a circular array about their axial direction are installed at the bottom of the fixing plate 11. A fixing rod 13 slides through the interior of the fixing cylinder 12 at its length, away from the fixing plate 11. An adjustment mechanism is connected to the end of the fixing rod 13 near the fixing plate 11. The adjustment mechanism is located inside the fixing cylinder 12 and includes: A rack 17 is fixed to one side of the fixed cylinder 12 along the width direction of the fixed cylinder 12 at one end of the fixed rod 13 near the fixed plate 11, and the length direction of the rack 17 is parallel to the length direction of the fixed cylinder 12. A rack 17 with the same structure is fixed on the side wall of the fixed cylinder 12 away from the rack 17. The two rack 17 are meshed with the same gear 16 on the side that is close to each other. The gear 16 is axially aligned with the thickness direction of the fixed cylinder 12 and slides on the inner side wall of the fixed cylinder 12. The gear 16 is axially connected to a locking mechanism, which is rotatably installed through the fixed cylinder 12. The rack 17 fixed to the end of the fixed rod 13 slides on the inner wall of the fixed cylinder 12. The gear 16 is coaxially connected to the slider on the side wall away from the locking mechanism along the axial direction. The end of the slider away from the gear 16 slides on the inner wall of the fixed cylinder 12. When the end of the fixed rod 13 near the fixed plate 11 abuts against the end of the rack 17 fixed on the inner wall of the fixed cylinder 12, the gear 16 moves to the end of the rack 17 fixed on the inner wall of the fixed cylinder 12 near the fixed plate 11. The fixed cylinder 12 has a sliding channel on its side wall along its length direction, corresponding to the position of the locking mechanism. The sliding channel extends through the fixed cylinder 12 along its thickness direction. A connecting shaft is coaxially fixed to the side wall of the gear 16 near the sliding channel. The connecting shaft slides in the sliding channel. The end of the connecting shaft away from the gear 16 is coaxially connected to the locking mechanism. Connecting members 14 are fixed to the side walls of two opposite fixed cylinders 12 that are far away from each other, respectively, at the end away from the fixed plate 11.
[0016] It should be noted that the fixed cylinder 12 and the fixed plate 11 are connected by a damping shaft or by bolts. When the tilt angle needs to be adjusted, only the bolts need to be adjusted. The top of the fixed plate 11 is provided with a rotating seat, which is used to install the scanning equipment body 10. This will not be described in detail here. Gear 16 simultaneously meshes with rack rods 17 on both sides. When gear 16 is rotated, rack rods 17 on both sides move in opposite directions. However, since one rack rod 17 is fixed, gear 16 will also rotate and move at the same time, thereby meshing with the rack rod 17 at the end of fixed rod 13 and pushing fixed rod 13 to extend. This expands the adjustment range of fixed rod 13 to twice that of traditional single rack structure, i.e., "stroke doubling". This increases the telescopic adjustment range within the same volume. Conversely, within the same adjustment range, this design can be achieved with less material, thereby reducing material usage and weight, and making it easier to carry. The connector 14 has a through hole for easy installation of bolts. When retracted, it can be fixed to a dedicated car or driverless vehicle for scanning operations as needed. It is understood that the configuration of the connector 14 can be changed according to the specific model and configuration.
[0017] Please see the appendix Figure 1 To be continued Figure 4The present invention provides a technical solution: the locking mechanism set in the axial direction of the gear 16 includes a fixing block 20 coaxially fixed to the end of the connecting shaft, a fixing ring 24 slidably sleeved on the outside of the fixing block 20, the fixing block 20 and the fixing ring 24 are both set on the outside of the fixing cylinder 12 and the bottom end of the fixing ring 24 slides on the fixing cylinder 12, a limiting block 21 is coaxially fixed on the side wall of the fixing block 20 away from the connecting shaft, a knob 15 is coaxially fixed on the end of the limiting block 21 away from the fixing block 20, the limiting block 21 is set inside the fixing ring 24 and the knob 15 is set outside the fixing ring 24, a limiting groove is opened on the outer arc wall of the limiting block 21 along its circumference, and the limiting groove is set through the limiting block 21 axially; Limiting block 22 is provided in the limiting groove on limiting block 21. Limiting block 22 is vertically fixed to the outer edge of the side wall of the fixing block 20 away from the connecting shaft. A coil spring 23 is sleeved on the outside of limiting block 21. The outer arc wall of coil spring 23 rubs against the inner arc wall of fixing ring 24. Both ends of coil spring 23 are fixed with elbows. The length direction of the elbows is parallel to the radial direction of limiting block 21 and extends into the limiting groove.
[0018] It should be noted that the limiting block 21 is cylindrical in shape. Since the two ends of the coil spring 23 are far apart and abut against the inner walls of the limiting groove, when the limiting block 21 rotates actively, the limiting groove on the limiting block 21 will abut against the bend and thus push the coil spring 23 to move. During this period, since the limiting groove abuts against the inner curved surface of the bend, which is closer to the coil spring 23, the coil spring 23 will be in a "contracted" state when subjected to the force of the inner curved surface. That is, the coil spring 23 has a tendency to contract inward, and thus the radius of the coil spring 23 will be slightly reduced, reducing the friction between the coil spring 23 and the fixed ring 24, so that the gear 16 can rotate normally. In one specific embodiment of this example, the longitudinal section of the limiting block 22 is a fan-shaped ring. The cross-sectional size of the limiting block 22 is smaller than that of the limiting groove, thus providing space for the coil spring 23 to move. Since the sides of the bends at both ends of the coil spring 23 that are close to each other abut against the outer walls of the two ends of the limiting block 22, when the gear 16 drives the limiting block 22 to rotate actively in the opposite direction, the limiting block 22 will abut against the bend and thus push the coil spring 23 to move. During this period, since the limiting groove abuts against the outer curved surface of the bend away from the coil spring 23, the coil spring 23 will be in a "stretched" state when subjected to the force of the outer curved surface, that is, the coil spring 23 has a tendency to expand outward. As a result, the radius of the coil spring 23 will increase slightly, thereby increasing the contact area and contact force with the fixing ring 24, increasing the friction, and making it difficult or even impossible for the gear 16 to rotate, thus forming a two-way lock.
[0019] Working principle: The bottom of the fixed disk 11 is provided with a ring array of fixed cylinders 12, and the fixed rod 13 slides in the fixed cylinder 12. In the adjustment mechanism, the gear 16 simultaneously meshes the rack rod 17 at the end of the fixed rod 13 and the rack rod 17 on the inner side of the fixed cylinder 12. When the gear 16 is rotated, the rack rods 17 on both sides move in opposite directions, driving the fixed rod 13 to extend, thereby doubling the stroke. The locking mechanism drives the fixed block 20 to rotate via the knob 15. The coil spring 23 moves within the limiting groove of the limiting block 21. When rotating, the coil spring 23 contracts to reduce friction. When released, the coil spring 23 expands outward, driving the limiting block 21 to engage with the fixed ring 24, forming a bidirectional self-locking mechanism to prevent the fixed rod 13 from retracting. The connecting piece 14 is used to connect the moving device. The scanning equipment body 10 is mounted on top of the fixed plate 11, achieving high-precision laser scanning of underground pipe networks through stable support.
Claims
1. A portable positioning support structure for laser scanning of underground pipelines, comprising a scanning device body (10) and a fixing plate (11), characterized in that: The bottom of the fixed disk (11) is equipped with a plurality of fixed cylinders (12) arranged in a ring array about its axial direction. A fixed rod (13) slides through the interior of the fixed cylinder (12) away from the fixed disk (11) along its length direction. An adjustment mechanism is connected to the end of the fixed rod (13) near the fixed disk (11). The adjustment mechanism is set inside the fixed cylinder (12) and includes: A rack rod (17) is fixed to one side of the fixed cylinder (12) along the width direction of the fixed cylinder (12) at one end of the fixed rod (13) near the fixed plate (11), and the length direction of the rack rod (17) is parallel to the length direction of the fixed cylinder (12). A rack rod (17) with the same structure is fixed on the side wall of the fixed cylinder (12) away from the rack rod (17). The two rack rods (17) are meshed with the same gear (16) on the side that is close to each other. The gear (16) is axially aligned with the thickness direction of the fixed cylinder (12) and slides on the inner side wall of the fixed cylinder (12). The gear (16) is axially connected to a locking mechanism, which is rotatably installed through the fixed cylinder (12).
2. The portable positioning support structure for laser scanning of underground pipelines as described in claim 1, characterized in that: The rack rod (17) fixed to the end of the fixed rod (13) slides on the inner wall of the fixed cylinder (12). The gear (16) is coaxially connected to the slider on the side wall away from the locking mechanism along the axial direction. The end of the slider away from the gear (16) slides on the inner wall of the fixed cylinder (12). When the end of the fixed rod (13) near the fixed plate (11) abuts against the end of the rack rod (17) fixed on the inner wall of the fixed cylinder (12), the gear (16) moves to the end of the rack rod (17) fixed on the inner wall of the fixed cylinder (12) near the fixed plate (11).
3. The portable positioning support structure for laser scanning of underground pipelines as described in claim 1, characterized in that: The fixed cylinder (12) has a sliding channel on its side wall along its length direction at the position corresponding to the locking mechanism. The sliding channel runs through the fixed cylinder (12) along its thickness direction. The gear (16) is coaxially fixed with a connecting shaft on the side wall near the sliding channel. The connecting shaft slides in the sliding channel, and the end of the connecting shaft away from the gear (16) is coaxially connected to the locking mechanism.
4. The portable positioning support structure for laser scanning of underground pipelines as described in claim 3, characterized in that: The locking mechanism set in the axial direction of the gear (16) includes a fixing block (20) coaxially fixed to the end of the connecting shaft. A fixing ring (24) is slidably sleeved on the outside of the fixing block (20). The fixing block (20) and the fixing ring (24) are both set on the outside of the fixing cylinder (12) and the bottom end of the fixing ring (24) slides on the fixing cylinder (12).
5. The portable positioning support structure for laser scanning of underground pipelines as described in claim 4, characterized in that: A limiting block (21) is coaxially fixed on the side wall of the fixed block (20) away from the connecting shaft. A knob (15) is coaxially fixed on the end of the limiting block (21) away from the fixed block (20). The limiting block (21) is located inside the fixed ring (24) and the knob (15) is located outside the fixed ring (24). A limiting groove is opened on the outer arc wall of the limiting block (21) along its circumference. The limiting groove is axially connected to the limiting block (21).
6. The portable positioning support structure for laser scanning of underground pipelines as described in claim 5, characterized in that: Limiting block 2 (22) is provided in the limiting groove on limiting block 1 (21). Limiting block 2 (22) is vertically fixed to the outer edge of the side wall of the fixing block (20) away from the connecting shaft. A coil spring (23) is sleeved on the outside of limiting block 1 (21). The outer arc wall of the coil spring (23) rubs against the inner arc wall of the fixing ring (24).
7. The portable positioning support structure for laser scanning of underground pipelines as described in claim 6, characterized in that: Both ends of the coil spring (23) are fixed with bends, the length direction of the bends is parallel to the radial direction of the limiting block (21) and both extend into the limiting groove.
8. The portable positioning support structure for laser scanning of underground pipelines as described in claim 1, characterized in that: A connector (14) is fixed to one end of each of the two opposite fixed cylinders (12) that are far away from each other.