Guide rail type box girder internal structure disease detection device
By using a guide rail type box girder internal structural defect detection device, which utilizes a motor-driven gear and rack mechanical drive method, combined with telescopic rod assembly and multiple camera combination, the problems of low detection efficiency and unstable results of box girder internal inspection are solved, and efficient and stable defect detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN ROAD & BRIDGE MAINTENANCE CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, the detection device for internal structural defects of box girders has the problems of low detection efficiency and unstable results, especially due to the difficulty and error caused by the small internal space of the box girder, insufficient lighting and lack of external reference.
A guide rail type box girder internal structural defect detection device was designed, including a detection component, an electric control drive component, a guide rail sliding component and a base component. The detection component is moved stably and accurately along the central guide rail by a mechanical drive method of motor-driven gear and rack. Combined with telescopic rod group and multiple camera combination, efficient and stable defect detection is achieved.
It has achieved efficient and stable detection of internal structural defects in box girders, reduced the missed detection rate, and improved detection efficiency and safety. The detection effect has been optimized by mechanical drive and multi-camera combination.
Smart Images
Figure CN224535846U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building defect detection technology, and in particular to a guide rail box girder internal structural defect detection device. Background Technology
[0002] Box girders are a common type of main girder for long-span bridges. They are hollow inside with flanges on both sides of the upper part, resembling a box, hence the name. During operation, highway box girder bridges are susceptible to structural defects such as longitudinal cracks in the top slab, diagonal cracks in the web, and concrete spalling exposing reinforcement under vehicle loads. Traditional inspection methods rely on manual scaffolding or bridge inspection vehicles, which have the following drawbacks:
[0003] The box girder has a small interior space and insufficient lighting, making it difficult and dangerous for personnel to enter; large equipment cannot be deployed inside the box girder, resulting in a high rate of missed inspections.
[0004] Existing detection devices, such as inspection robots and vehicles, are easily affected by the environment inside the box girder, relying on wheeled chassis to move randomly on the bottom plate of the box girder. Since no external benchmarks are set inside the box girder, even slight slopes inside the box girder or construction debris can lead to cumulative errors, resulting in unstable detection results.
[0005] Therefore, there is an urgent need to design a guide rail type internal structural defect detection device for box girders to solve the above problems. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide a guide rail type box girder internal structural defect detection device with high detection efficiency and stable detection effect.
[0007] To address the aforementioned technical problems, this utility model provides a guide rail type box girder internal structural defect detection device, comprising a detection component, an electronically controlled drive component, a guide rail sliding component, and a base component arranged sequentially from bottom to top. The base component is mounted on the bottom plate of the box girder. The detection component is used to collect structural information inside the box girder. The electronically controlled drive component includes a battery for power supply and a motor for providing power. The guide rail sliding component includes a central guide rail and sliding connecting parts on both sides of the central guide rail. The central guide rail is connected to the base component, and the sliding connecting parts are connected to the bottom of the electronically controlled drive component. A rack is provided on the inner sidewall of the central guide rail, and a gear adapted to the rack is provided at the output end of the motor. The motor drives the gear, and the gear cooperates with the rack to move the electronically controlled drive component along the central guide rail.
[0008] As an improvement to the above solution, the detection component includes two telescopic and flip cameras and two fixed-view cameras.
[0009] As an improvement to the above solution, the detection component includes a camera, a camera platform, and a telescopic rod assembly connected sequentially from top to bottom, and the telescopic rod assembly is connected to the top of the electronically controlled drive component.
[0010] As an improvement to the above solution, the bottom surface of the camera platform is provided with a first platform connecting part and a second platform connecting part, and the top surface of the electronically controlled drive assembly is provided with a first drive connecting part and a second drive connecting part; the telescopic rod assembly includes a first active rod, a second active rod, a first driven rod, and a second driven rod; one end of the first driven rod is hinged to the first platform connecting part, and the other end is hinged to the middle of the first active rod; both ends of the second driven rod are respectively hinged to one end of the first active rod and one end of the second active rod, the middle of the second driven rod is hinged to the second platform connecting part, the other end of the first active rod is hinged to the first drive connecting part, and the other end of the second active rod is hinged to the second drive connecting part.
[0011] As an improvement to the above solution, the sliding connection part includes a vertical sliding part and a horizontal sliding part; the top of the vertical sliding part is connected to the electronically controlled drive assembly, and the bottom of the vertical sliding part is slidably connected to the base assembly; one end of the horizontal sliding part is connected to the side of the vertical sliding part, and the other end is slidably connected to the outer wall of the central guide rail.
[0012] As an improvement to the above solution, the vertical sliding part includes a first connecting block, a first bearing assembly, and a first connecting shaft, and the horizontal sliding part includes a second connecting block, a second connecting shaft, and a second bearing assembly disposed on both sides of the second connecting block; the top of the first connecting block is detachably connected to the bottom of the electronically controlled drive assembly, and the first bearing assembly is connected to the bottom of the first connecting block through the first connecting shaft; the second bearing assembly is connected to both sides of the second connecting block through the second connecting shaft, and the second bearing assembly is slidably connected to the outer wall of the central guide rail.
[0013] As an improvement to the above solution, the base assembly includes a base plate, support members disposed at both ends of the base plate, and shock-absorbing connectors; the support members pass through the base plate, and the shock-absorbing connectors are sleeved on the support members and disposed on both sides of the base plate to fix the base plate to the support members.
[0014] As an improvement to the above solution, the shockproof connector includes an upper connector, a lower connector, and shockproof adhesive; the upper connector is disposed on the upper side of the substrate, the lower connector is disposed on the lower side of the substrate, and the shockproof adhesive is disposed between the lower connector and the substrate.
[0015] As an improvement to the above solution, the electronically controlled drive assembly further includes a communication module, which is connected to the battery, motor, and detection assembly.
[0016] As an improvement to the above solution, a charging base is also provided at the end of the guide rail sliding assembly, and the electronically controlled drive assembly is provided with conductive contacts for connecting to the charging base.
[0017] The beneficial effects of implementing this utility model are as follows:
[0018] This utility model relates to a guide rail type box girder internal structural defect detection device. The detection component captures and detects structural defects inside the box girder. The motor drives the gear, and the gear, in conjunction with the rack, achieves stable and precise movement of the detection component along the central guide rail inside the box girder through a mechanical drive mechanism. This results in high detection efficiency and stable detection results.
[0019] Furthermore, the internal structural defect detection device for the guide rail box girder of this utility model also achieves stable and reliable overall operation through the cooperation between the detection component, the electric control drive component, the guide rail sliding component and the base component. The telescopic rod group optimizes the shooting and detection effect, and the cooperation between the vertical sliding part and the horizontal sliding part ensures that the electric control drive component moves smoothly and accurately along the central guide rail. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the internal structural defect detection device for guide rail type box girder of this utility model;
[0021] Figure 2 This is a partially enlarged structural schematic diagram of the guide rail type box girder internal structural defect detection device of this utility model. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.
[0023] like Figure 1 As shown, the guide rail type box girder internal structural defect detection device of this utility model includes a detection component 1, an electric control drive component 2, a guide rail sliding component 3 and a base component 4 arranged sequentially from bottom to top. The base component 4 is set on the bottom plate 51 of the box girder 5. The detection component 1 is used to collect the internal structural information of the box girder 5 (mainly including structural defect information such as cracks and spalling).
[0024] The electronically controlled drive assembly 2 includes a battery (not shown in the figure) for power supply and a motor 21 for providing power.
[0025] The guide rail sliding assembly 3 includes a central guide rail 31 and sliding connecting parts 32 disposed on both sides of the central guide rail 31. The central guide rail 31 is connected to the base assembly 4, and the sliding connecting parts 32 are connected to the bottom of the electronically controlled drive assembly 2.
[0026] The inner sidewall of the central guide rail 31 is provided with a rack 311, and the output end of the motor 21 is provided with a gear 211 that is adapted to the rack 311. The motor 21 drives the gear 211, and the gear 211 cooperates with the rack 311 to make the electronically controlled drive assembly 2 move along the central guide rail 31.
[0027] This utility model's guide rail type box girder internal structural defect detection device uses the detection component 1 to photograph and detect structural defects inside the box girder 5. The motor 21 drives the gear 211, and the gear 211, in conjunction with the rack 311, achieves stable and precise movement of the detection component 1 inside the box girder 5 along the central guide rail 31 through mechanical drive, resulting in high detection efficiency and stable detection effect.
[0028] The detection component 1 may include two telescopic flip cameras and two fixed-view cameras. The combination of two telescopic flip cameras and two fixed-view cameras can expand the field of view and improve the detection rate of defects without increasing the size of the platform.
[0029] The detection component 1 can also consist of a camera, a camera platform 11, and a telescopic rod assembly 12 connected sequentially from top to bottom. The telescopic rod assembly 12 is connected to the top of the electronically controlled drive component 2. This three-layer structure of "camera—camera platform 11—telescopic rod assembly 12" allows for adjustable camera height to adapt to different box girder cross-sectional heights, ensuring optimal shooting distance.
[0030] Specific structural aspects of the telescopic rod assembly 12 and its connected components:
[0031] The bottom surface of the camera platform 11 is provided with a first platform connecting part 111 and a second platform connecting part 112, and the top surface of the electronically controlled drive assembly 2 is provided with a first drive connecting part 22 and a second drive connecting part 23.
[0032] The telescopic rod assembly 12 includes a first driving rod 121, a second driving rod 122, a first driven rod 123, and a second driven rod 124.
[0033] One end of the first driven rod 123 is hinged to the first platform connecting part 111, and the other end is hinged to the middle part of the first driving rod 121;
[0034] The two ends of the second driven rod 124 are respectively hinged to one end of the first driving rod 121 and one end of the second driving rod 122. The middle part of the second driven rod 124 is hinged to the second platform connecting part 112. The other end of the first driving rod 121 is hinged to the first drive connecting part 22. The other end of the second driving rod 122 is hinged to the second drive connecting part 23.
[0035] It should be noted that the electric control drive assembly 2 also includes a rod motor (not shown in the figure) that drives the first active rod 121 and the second active rod 122; the guide rail type box girder internal structure defect detection device of this utility model realizes distance telescopic adjustment through the design of the first active rod 121, the second active rod 122, the first driven rod 123 and the second driven rod 124 in the telescopic rod assembly 12, which facilitates close-range fine shooting of defects in the box girder 5.
[0036] Regarding the specific structure of the guide rail sliding assembly 3:
[0037] The sliding connection part 32 includes a vertical sliding part 321 and a horizontal sliding part 322;
[0038] The top of the vertical sliding part 321 is connected to the electronically controlled drive assembly 2, and the bottom of the vertical sliding part 321 is slidably connected to the base assembly 4;
[0039] One end of the horizontal sliding part 322 is connected to the side of the vertical sliding part 321, and the other end is slidably connected to the outer wall of the central guide rail 31.
[0040] The present invention provides a smooth bidirectional sliding mechanism for detecting defects in the internal structure of a guide rail type box girder through the structure of the vertical sliding part 321 and the horizontal sliding part 322, in conjunction with the gear 211 and the rack 311, which significantly reduces operational vibration.
[0041] Specifically, the vertical sliding part 321 includes a first connecting block 321a, a first bearing assembly 321b and a first connecting shaft 321c, and the horizontal sliding part 322 includes a second connecting block 322a, a second connecting shaft 322b and a second bearing assembly 322c disposed on both sides of the second connecting block 322a;
[0042] The top of the first connecting block 321a is detachably connected to the bottom of the electric drive control assembly 2, and the first bearing assembly 321b is connected to the bottom of the first connecting block 321a via the first connecting shaft 321c.
[0043] It should be noted that, specifically, first screw holes 24 can be provided at the bottom of the electric drive assembly 2 and the first connecting block 321a, and suitable bolts can be sequentially passed through the bottom of the electric drive assembly 2 and the first connecting block 321a to detachably connect the top of the first connecting block 321a to the electric drive assembly 2.
[0044] The second bearing assembly 322c is connected to both sides of the second connecting block 322a via the second connecting shaft 322b, and the second bearing assembly 322c is slidably connected to the outer wall of the central guide rail 31.
[0045] It should be noted that the guide rail 31 of the central horizontal sliding part 322 also includes a limiting plate 312 disposed above the horizontal sliding part 322. The vertical sliding part 321, the horizontal sliding part 322, and the limiting plate 312 together limit the movement of the electrically controlled drive assembly 2. The modular design of the vertical sliding part 321 and the horizontal sliding part 322 of this utility model's guide rail type box girder internal structural defect detection device facilitates quick disassembly and maintenance. Simultaneously, the sliding connection between the first bearing assembly 321b and the second bearing assembly 322c and the central guide rail 31 reduces the coefficient of friction.
[0046] The base assembly 4 includes a base plate 41, support members 42 disposed at both ends of the base plate 41, and shockproof connectors 43.
[0047] The support member 42 passes through the substrate 41, and the shockproof connector 43 is sleeved on the support member 42 and disposed on both sides of the substrate 41 to fix the substrate 41 to the support member 42.
[0048] It should be noted that the connection method between the central guide rail 31 and the substrate 41 can be as follows: both the central guide rail 31 and the substrate 41 are provided with second screw holes 44, and the central guide rail 31 can be connected to the substrate 41 by passing the appropriate bolts through the central guide rail 31 and the substrate 41 in sequence.
[0049] Preferably, the shock-absorbing connector 43 includes an upper connector 431, a lower connector 432, and a shock-absorbing adhesive 433;
[0050] The upper connector 431 is disposed on the upper side of the substrate 41, the lower connector 432 is disposed on the lower side of the substrate 41, and the shock-absorbing adhesive 433 is disposed between the lower connector 432 and the substrate 41.
[0051] The guide rail type box girder internal structure defect detection device of this utility model can absorb vibration energy and increase the stability of the base assembly 4 by cooperating with the upper connector 431, the lower connector 432 and the anti-vibration adhesive 433 in the anti-vibration connector 43.
[0052] The electronically controlled drive assembly also includes a communication module (not shown in the figure), which is connected to the battery, motor 21, and detection assembly 1. The built-in communication module enables "simultaneous detection and data transmission," eliminating the need for on-site personnel, reducing manual intervention, and improving safety.
[0053] This utility model's guide rail type box girder internal structural defect detection device also includes a charging base (not shown in the figure) located at the end of the guide rail sliding assembly 3, and the electronically controlled drive assembly 2 is provided with conductive contacts (not shown in the figure) for connecting to the charging base. This enables docking and charging, reducing manual intervention. The design of the charging base and conductive contacts is existing technology, and its principles will not be elaborated here.
[0054] This utility model's guide rail type box girder internal structural defect detection device uses the detection component 1 to photograph and detect structural defects inside the box girder 5. The motor 21 drives the gear 211, which, in conjunction with the rack 311, achieves stable and precise movement of the detection component 1 along the central guide rail 31 inside the box girder 5 through a purely mechanical drive mechanism. This results in high detection efficiency and stable detection effects. Furthermore, the device's overall operation is stable and reliable through the cooperation between the detection component 1, the electrically controlled drive component 2, the guide rail sliding component 3, and the base component. The telescopic rod assembly 12 optimizes the photographing and detection effect, and the vertical sliding part 321 and the horizontal sliding part 322 work together to ensure smooth and precise movement of the electrically controlled drive component 2 along the central guide rail 31.
[0055] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A guide rail type box girder internal structural defect detection device, characterized in that, It includes a detection component, an electronically controlled drive component, a guide rail sliding component, and a base component arranged sequentially from bottom to top. The base component is located on the bottom plate of the box girder, and the detection component is used to collect structural information inside the box girder. The electronically controlled drive assembly includes a battery for power supply and a motor for providing power. The guide rail sliding assembly includes a central guide rail and sliding connecting parts disposed on both sides of the central guide rail. The central guide rail is connected to the base assembly, and the sliding connecting parts are connected to the bottom of the electronically controlled drive assembly. The inner wall of the central guide rail is provided with a rack, and the output end of the motor is provided with a gear adapted to the rack. The motor drives the gear, and the gear cooperates with the rack to make the electronically controlled drive assembly move along the central guide rail.
2. The guide rail type box girder internal structural defect detection device according to claim 1, characterized in that, The detection assembly includes two telescopic and flip cameras and two fixed-view cameras.
3. The guide rail type box girder internal structural defect detection device according to claim 2, characterized in that, The detection component includes a camera, a camera platform, and a telescopic rod assembly connected in sequence from top to bottom. The telescopic rod assembly is connected to the top of the electronically controlled drive component.
4. The guide rail type box girder internal structural defect detection device according to claim 3, characterized in that, The bottom surface of the camera platform is provided with a first platform connection part and a second platform connection part, and the top surface of the electronically controlled drive assembly is provided with a first drive connection part and a second drive connection part; The telescopic rod assembly includes a first driving rod, a second driving rod, a first driven rod, and a second driven rod; One end of the first driven rod is hinged to the first platform connection part, and the other end is hinged to the middle part of the first driving rod; The two ends of the second driven rod are respectively hinged to one end of the first driving rod and one end of the second driving rod. The middle part of the second driven rod is hinged to the second platform connecting part. The other end of the first driving rod is hinged to the first drive connecting part, and the other end of the second driving rod is hinged to the second drive connecting part.
5. The guide rail type box girder internal structural defect detection device according to claim 1, characterized in that, The sliding connection includes a vertical sliding part and a horizontal sliding part; The top of the vertical sliding part is connected to the electronically controlled drive assembly, and the bottom of the vertical sliding part is slidably connected to the base assembly; One end of the horizontal sliding part is connected to the side of the vertical sliding part, and the other end is slidably connected to the outer wall of the central guide rail.
6. The guide rail type box girder internal structural defect detection device according to claim 5, characterized in that, The vertical sliding part includes a first connecting block, a first bearing assembly, and a first connecting shaft; the horizontal sliding part includes a second connecting block, a second connecting shaft, and a second bearing assembly disposed on both sides of the second connecting block. The top of the first connecting block is detachably connected to the bottom of the electronically controlled drive assembly, and the first bearing assembly is connected to the bottom of the first connecting block via a first connecting shaft; The second bearing assembly is connected to both sides of the second connecting block via the second connecting shaft, and the second bearing assembly is slidably connected to the outer wall of the central guide rail.
7. The guide rail type box girder internal structural defect detection device according to claim 1, characterized in that, The base assembly includes a base plate, support members disposed at both ends of the base plate, and shockproof connectors. The support member passes through the substrate, and the shock-absorbing connector is sleeved on the support member and disposed on both sides of the substrate to fix the substrate to the support member.
8. The guide rail type box girder internal structural defect detection device according to claim 7, characterized in that, The shock-absorbing connector includes an upper connector, a lower connector, and shock-absorbing adhesive. The upper connector is disposed on the upper side of the substrate, the lower connector is disposed on the lower side of the substrate, and the shock-absorbing adhesive is disposed between the lower connector and the substrate.
9. The guide rail type box girder internal structural defect detection device according to claim 1, characterized in that, The electronically controlled drive assembly also includes a communication module, which is connected to the battery, motor, and detection assembly.
10. The guide rail type box girder internal structural defect detection device according to claim 1, characterized in that, It also includes a charging base located at the end of the guide rail sliding assembly, and the electronically controlled drive assembly is provided with conductive contacts for connecting to the charging base.