Telescopic mechanical arm for tunnel detection

Abstract

The utility model discloses a tunnel detection telescopic mechanical arm which comprises a base, two T-shaped grooves are formed in the top of the base, first T-shaped blocks are rotationally connected to the inner walls of the two T-shaped grooves, rotating discs are fixedly connected to the tops of the two first T-shaped blocks, threaded holes are formed in the outer walls of the two rotating discs, and threaded holes are formed in the outer walls of the two rotating discs. The inner wall of the threaded hole is in threaded connection with a locking bolt, and the top of each of the two rotating discs is fixedly connected with two fixing blocks. According to the utility model, the turntable can horizontally rotate through the first T-shaped block and the T-shaped groove, so that the overall position is adjusted; the first telescopic rod stretches out and draws back in the first telescopic sleeve, the second telescopic rod stretches out and draws back in the second telescopic sleeve, the overall length is adjusted, meanwhile, two times of vertical rotation adjustment can be carried out, and fine adjustment can be conveniently carried out on the position of a detection instrument during high-altitude detection; and the purpose of multi-angle adjustment is integrally achieved, so that a detection instrument is convenient to use, and angle limitation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of tunnel inspection technology, and in particular to a telescopic robotic arm for tunnel inspection. Background Technology

[0002] Tunnel inspection is a comprehensive and systematic inspection and evaluation of tunnel engineering projects to ensure their safety, stability, and functionality. Tunnel inspection includes: External tunnel inspection, which primarily involves observing the tunnel's exterior to check for obvious damage such as cracks, spalling, and potholes. This is an important means of initially assessing the tunnel's health condition. Internal tunnel structural inspection includes examining the tunnel's internal lining, connections, and supporting structures. Specialized equipment is used to check for abnormalities such as cracks and deformations to assess its safety and durability.

[0003] A search revealed that patent document CN221075764U discloses a tunnel inspection platform. This platform utilizes a fixing mechanism at the end of multiple retractable robotic arms furthest from the mobile platform. This allows inspection instruments to be fixed to the robotic arms, which are then rotatably mounted on the mobile platform. The position of the inspection instruments is adjusted by the extension and rotation of the robotic arms, ensuring they are in close contact with the tunnel surface and guaranteeing inspection accuracy. Simultaneously, driving the mobile platform to move allows multiple inspection instruments to perform inspections along the tunnel, enabling simultaneous inspection of multiple locations within the tunnel and improving inspection efficiency.

[0004] In actual use, the tunnel inspection platform mentioned above mainly rotates vertically through a rotating mechanism. However, when horizontal adjustments are needed, the moving platform needs to be adjusted, which requires readjusting the positions of other robotic arms and inspection instruments. The whole process is complicated and inconvenient. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a telescopic robotic arm for tunnel inspection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tunnel inspection telescopic robotic arm includes a base. The top of the base has two T-shaped grooves. The inner walls of each T-shaped groove are rotatably connected to a first T-shaped block. The tops of each of the two first T-shaped blocks are fixedly connected to a turntable. The outer walls of each turntable have threaded holes, and the inner walls of these holes are threaded with locking bolts. The tops of each turntable have two fixed blocks. The outer walls of each of the four fixed blocks have through holes. The inner walls of each of the four through holes are rotatably connected in pairs to two first threaded rods. The outer walls of each of the two first threaded rods are fixedly fitted with connecting blocks. The tops of each of the two connecting blocks are fixedly connected to a first telescopic sleeve. The inner walls of the first telescopic sleeves are slidably connected to a first telescopic rod. The top of each first telescopic rod has a through hole, and the inner walls of this through hole are rotatably connected to a second threaded rod. One end of the second threaded rod is fixedly connected to a cylinder. The top of the base has a telescopic mechanism and an assembly mechanism.

[0008] Preferably, the telescopic mechanism includes two second telescopic sleeves, the outer walls of the two cylinders are fixedly connected to the tops of the two second telescopic sleeves respectively, and the inner walls of the two second telescopic sleeves are slidably connected to second telescopic rods. The outer walls of the first telescopic rod and the second telescopic rod are provided with multiple insertion holes, and the outer walls of the first telescopic sleeve and the second telescopic sleeve are provided with mounting holes. The inner walls of the mounting holes are threaded with fastening bolts. By setting the telescopic mechanism, the overall length can be adjusted, which facilitates the inspection of tunnel structures at high altitudes.

[0009] Preferably, the assembly mechanism includes two L-shaped mounting seats, one end of each of the two second telescopic rods is fixedly connected to a round seat, the outer wall of each of the two round seats is provided with a T-shaped groove, the inner wall of each of the two T-shaped grooves is rotatably connected to a second T-shaped block, and the outer wall of each of the two second T-shaped blocks is fixedly connected to one end of each of the two L-shaped mounting seats. By setting up the assembly mechanism, the testing instrument can be installed, and its rotation angle can be adjusted through the second T-shaped blocks and the T-shaped grooves.

[0010] Preferably, the bottom of the locking bolt is pressed against the top of the base, and the turntable is fixed to the top of the base by setting the locking bolt.

[0011] Preferably, both the first threaded rod and the second threaded rod have locking nuts threaded onto their outer walls, thereby fixing the positions of the first telescopic sleeve and the second telescopic sleeve respectively by setting the locking nuts.

[0012] Preferably, one end of the fastening bolt is located inside the insertion hole, and the outer walls of both round seats are provided with assembly holes. The inner walls of both assembly holes are threaded with countersunk bolts. One end of the countersunk bolt contacts the outer wall of the second T-block, and the second T-block is fixed in the T-slot by setting the countersunk bolt.

[0013] Preferably, a handrail is fixedly connected to the outer wall of the base, and multiple casters are fixedly connected to the bottom of the base.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] This design allows the turntable to rotate horizontally via the first T-block and T-groove, adjusting its overall position. The first telescopic rod extends and retracts within the first telescopic sleeve, while the second telescopic rod extends and retracts within the second telescopic sleeve, adjusting the overall length. Simultaneously, two vertical rotation adjustments are possible, facilitating fine-tuning of the instrument's position during high-altitude testing. This multi-angle adjustment capability enhances the usability of the testing instrument and avoids angle limitations. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a telescopic robotic arm for tunnel inspection proposed in this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of a telescopic robotic arm for tunnel inspection proposed in this utility model;

[0019] Figure 3 This utility model proposes a telescopic robotic arm for tunnel inspection. Figure 2 A magnified structural diagram of part A in the diagram.

[0020] In the diagram: 1. Base; 2. First T-block; 3. Turntable; 4. Locking bolt; 5. Fixing block; 6. Connecting block; 7. First threaded rod; 8. First telescopic sleeve; 9. First telescopic rod; 10. Cylindrical rod; 11. Second threaded rod; 12. Locking nut; 13. Second telescopic sleeve; 14. Second telescopic rod; 15. Insertion hole; 16. Fastening bolt; 17. Round seat; 18. Second T-block; 19. L-shaped mounting base; 20. Handrail. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figures 1-3 As shown, a telescopic robotic arm for tunnel inspection is disclosed, comprising a base 1. A removable protective plate is installed on the top of the base 1 to protect the telescopic robotic arm. Two T-shaped grooves are formed on the top of the base 1. A first T-shaped block 2 is rotatably connected to the inner wall of each of the two T-shaped grooves. A turntable 3 is fixedly connected to the top of each of the two first T-shaped blocks 2. Threaded holes are formed on the outer wall of each of the two turntables 3. Locking bolts 4 are threadedly connected to the inner wall of the threaded holes. The bottom of the locking bolts 4 is pressed against the top of the base 1. The turntables 3 rotate horizontally through the first T-shaped blocks 2 and the T-shaped grooves.

[0023] Two fixed blocks 5 are fixedly connected to the top of each of the two turntables 3. The outer walls of the four fixed blocks 5 are provided with through holes. The inner walls of the four through holes are rotatably connected to two first threaded rods 7 in pairs. The two first threaded rods 7 rotate through the four fixed blocks 5. The outer walls of the two first threaded rods 7 are fixedly fitted with connecting blocks 6. The rotation of the first threaded rods 7 drives the connecting blocks 6 to rotate. The tops of the two connecting blocks 6 are fixedly connected with first telescopic sleeves 8. The inner walls of the first telescopic sleeves 8 are slidably connected with first telescopic rods 9.

[0024] The top of the first telescopic rod 9 has a through hole, and the inner wall of the through hole is rotatably connected to the second threaded rod 11. The outer walls of the first threaded rod 7 and the second threaded rod 11 are both threaded with locking nuts 12. The outer walls of the first threaded rod 7 and the second threaded rod 11 are both fitted with washers to increase friction and prevent the locking nuts 12 from loosening. One end of the second threaded rod 11 is fixedly connected to a cylinder 10. The outer wall of the base 1 is fixedly connected to a handrail 20. The bottom of the base 1 is fixedly connected to multiple casters. By holding the handrail 20, the base 1 can be pushed to move by the multiple casters.

[0025] The top of the base 1 is provided with a telescopic mechanism, which includes two second telescopic sleeves 13. The outer walls of the two cylinders 10 are fixedly connected to the top of the two second telescopic sleeves 13 respectively. The inner walls of the two second telescopic sleeves 13 are slidably connected with second telescopic rods 14. The first telescopic rod 9 extends and retracts within the first telescopic sleeve 8, while the second telescopic rod 14 extends and retracts within the second telescopic sleeve 13 to adjust the overall length.

[0026] The outer walls of the first telescopic rod 9 and the second telescopic rod 14 are provided with multiple insertion holes 15, and the outer walls of the first telescopic sleeve 8 and the second telescopic sleeve 13 are provided with mounting holes. The inner walls of the mounting holes are threaded with fastening bolts 16, one end of which is located inside the insertion hole 15. The fastening bolts 16 limit the first telescopic rod 9 and the second telescopic rod 14 to be respectively within the first telescopic sleeve 8 and the second telescopic sleeve 13.

[0027] The top of the base 1 is provided with an assembly mechanism, which includes two L-shaped mounting seats 19. One end of each of the two second telescopic rods 14 is fixedly connected to a round seat 17. The outer wall of each of the two round seats 17 is provided with a T-shaped groove. The inner wall of each of the two T-shaped grooves is rotatably connected to a second T-shaped block 18. The cross-section of the first T-shaped block 2 and the second T-shaped block 18 is T-shaped, while the upper and lower parts are cylindrical.

[0028] The outer walls of both round seats 17 are provided with assembly holes, and the inner walls of both assembly holes are threaded with countersunk bolts. One end of the countersunk bolt contacts the outer wall of the second T-block 18, and the countersunk bolt fixes the second T-block 18 in the T-slot. The outer walls of the two second T-blocks 18 are respectively fixedly connected to one end of the two L-shaped mounting seats 19. The L-shaped mounting seats 19 can rotate through the second T-blocks 18 and the T-slot.

[0029] Working principle: During tunnel inspection, existing inspection equipment (such as high-definition cameras or crack detection instruments) is fixedly installed on two L-shaped mounting bases 19. The base 1 is moved via the handrail 20 and multiple casters. When inspection is required at a high position or when it is inconvenient for personnel to conduct the inspection, the two locking bolts 4 are turned to release the position fixation of the two turntables 3. The turntables 3 rotate horizontally through the first T-shaped block 2 and the T-shaped groove to adjust the overall position. Then, the multiple fastening bolts 16 are turned in sequence to release the position fixation of the first telescopic rod 9 and the second telescopic rod 14. The first telescopic rod 9 extends and retracts within the first telescopic sleeve 8, while the second telescopic rod 14 extends and retracts within the second telescopic sleeve 13 to adjust the overall length. Afterwards, rotate the multiple fastening bolts 16 again, so that one end of each fastening bolt 16 is inserted into the multiple insertion holes 15, limiting the first telescopic rod 9 and the second telescopic rod 14 to be respectively within the first telescopic sleeve 8 and the second telescopic sleeve 13; and the second telescopic sleeve 13 can rotate on the first telescopic rod 9 through the second threaded rod 11, while the first telescopic sleeve 8 can rotate through the connecting block 6 and the first threaded rod 7, allowing for two vertical rotation adjustments, which facilitates fine-tuning of the position of the testing instrument when testing at heights. After adjustment, rotate the two locking nuts 12 to press them against the outer walls of the fixing block 5 and the first telescopic rod 9 respectively, for compression and fixation, thus achieving the purpose of multi-angle adjustment.

[0030] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention; the preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods; obviously, many modifications and variations can be made based on the content of this specification; the present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention; the present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A telescopic robotic arm for tunnel inspection, comprising a base; characterized in that: The base has two T-shaped grooves on its top. The inner walls of each T-shaped groove are rotatably connected to a first T-shaped block. The tops of each first T-shaped block are fixedly connected to a turntable. The outer walls of each turntable have threaded holes, and the inner walls of these holes are threaded with locking bolts. The tops of each turntable have two fixed blocks. The outer walls of each of the four fixed blocks have through holes. The inner walls of each of the four through holes are rotatably connected in pairs to two first threaded rods. The outer walls of each of the two first threaded rods are fixedly fitted with connecting blocks. The tops of each connecting block are fixedly connected to a first telescopic sleeve. The inner walls of the first telescopic sleeves are slidably connected to a first telescopic rod. The top of each first telescopic rod has a through hole, and the inner walls of this through hole are rotatably connected to a second threaded rod. One end of the second threaded rod is fixedly connected to a cylinder. The top of the base has a telescopic mechanism and an assembly mechanism.

2. The tunnel inspection telescopic robotic arm according to claim 1, characterized in that, The telescopic mechanism includes two second telescopic sleeves. The outer walls of the two cylinders are fixedly connected to the tops of the two second telescopic sleeves respectively. The inner walls of the two second telescopic sleeves are slidably connected to second telescopic rods. The outer walls of the first telescopic rod and the second telescopic rod are provided with multiple insertion holes. The outer walls of the first telescopic sleeve and the second telescopic sleeve are provided with mounting holes. The inner walls of the mounting holes are threaded with fastening bolts.

3. The tunnel inspection telescopic robotic arm according to claim 1, characterized in that, The assembly mechanism includes two L-shaped mounting seats, and one end of each of the two second telescopic rods is fixedly connected to a round seat. The outer wall of each of the two round seats is provided with a T-shaped groove, and the inner wall of each of the two T-shaped grooves is rotatably connected to a second T-shaped block. The outer wall of each of the two second T-shaped blocks is fixedly connected to one end of each of the two L-shaped mounting seats.

4. The tunnel inspection telescopic robotic arm according to claim 1, characterized in that, The bottom of the locking bolt is pressed against the top of the base.

5. A telescopic robotic arm for tunnel inspection according to claim 1, characterized in that, Both the first threaded rod and the second threaded rod have locking nuts threaded onto their outer walls.

6. A telescopic robotic arm for tunnel inspection according to claim 2, characterized in that, One end of the fastening bolt is located inside the insertion hole. The outer walls of both round seats are provided with assembly holes. The inner walls of both assembly holes are threaded with countersunk bolts. One end of the countersunk bolt is in contact with the outer wall of the second T-block.

7. A telescopic robotic arm for tunnel inspection according to claim 1, characterized in that, The base has a handrail fixedly connected to its outer wall, and multiple casters fixedly connected to its bottom.

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