Movable inspection vehicle for bridge expansion joint disease detection
By designing a mobile inspection vehicle for detecting bridge expansion joint defects and equipping it with an automatic spray marking nozzle assembly, the problem of manual marking required by existing devices has been solved, and the location of defects has been automatically marked, thus improving detection efficiency.
Patent Information
- Application Number
- CN202520293639.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing bridge expansion joint detection devices cannot automatically mark the location of defects, resulting in the inconvenience of manual marking after detection.
Design a mobile inspection vehicle for detecting defects in bridge expansion joints, equipped with an automatic spray marking nozzle assembly, which realizes automatic spray marking of defect locations through monitoring and control components.
It enables automatic spray marking of disease locations, improving detection efficiency and reducing manual operation steps.
Smart Images

Figure CN223793472U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge expansion joint inspection, specifically a mobile inspection vehicle for detecting bridge expansion joint defects. Background Technology
[0002] Bridge expansion joints are joints installed between the ends of two beams, between a beam end and an abutment, or at the hinged joints of a bridge to accommodate bridge deck deformation. These joints must allow free expansion and contraction in both directions parallel and perpendicular to the bridge axis, be robust and reliable, and provide a smooth ride for vehicles without bumps or noise. They must also prevent rainwater and debris from seeping in and causing blockages. Installation, inspection, maintenance, and cleaning should be simple and convenient. At the location of an expansion joint, the railings and bridge deck pavement must be disconnected.
[0003] For example, a municipal bridge expansion joint detection device (authorization announcement number CN218723879U) includes a work vehicle, a lifting platform, and a detection mechanism. The work vehicle has a connecting groove in the middle for the lifting platform to move up and down. The detection mechanism is installed on the lifting platform and includes a fixed plate and a movable plate. The fixed plate is installed at one end of the lifting platform. A limiting plate is provided on the side of the fixed plate away from the movable plate. The movable plate is slidably connected to the movable platform. A movable plate is provided on the side of the movable plate away from the fixed plate.
[0004] The aforementioned device avoids the cumbersome process of measuring the width of the expansion joint and the height difference between the two beam ends sequentially by reading the ranging data from the first and second laser rangefinders. However, the device lacks a marking feature for the defect locations, making it inconvenient to manually mark the defect locations when they are detected. Utility Model Content
[0005] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a mobile inspection vehicle for detecting defects in bridge expansion joints.
[0006] This utility model is implemented as follows: a mobile inspection vehicle for detecting defects in bridge expansion joints is constructed. The device includes a base assembly, a monitoring assembly, a control assembly, and a nozzle assembly. The upper end of the base assembly is fixedly connected to the monitoring assembly, the upper end of the monitoring assembly is fixedly connected to the control assembly, and the nozzle assembly is also fixedly connected within the monitoring assembly. The device is characterized by further including: the base assembly; a base plate, the left and right ends of which are rotatably connected to a rotating plate; a rotating plate, which has a first threaded groove; the first threaded groove is also located at the lower end of a fixed frame; a fixed frame, the upper end of which is fixedly connected to the lower end of a shock-absorbing airbag; screws, which are threadedly connected to the fixed frame and the rotating plate through the first threaded groove; a drive motor, which is slidably connected between the rotating plate and the fixed frame; and a Mecanum wheel, which is fixedly connected to the central drive shaft of the drive motor.
[0007] Preferably, the monitoring component includes: a monitoring box fixedly connected to the upper end of the base plate; a side panoramic camera fixedly connected to the four ends of the monitoring box (front, back, left, and right); a bottom camera fixedly connected to the lower end of the monitoring box; an air pump fixedly connected inside the monitoring box; an air supply pipe fixedly connected to the upper end of the air pump, the upper end of the air supply pipe being fixedly connected to the shock-absorbing airbag and the paint box; a first solenoid valve fixedly connected to the air supply pipe connected to the shock-absorbing airbag; a second solenoid valve fixedly connected to the air supply pipe connected to the paint box; and a shock-absorbing airbag fixedly connected to the upper end of the base plate.
[0008] Preferably, the control component includes: a solar panel fixedly connected to the upper end of the monitoring box; a power transmission line, the upper end of which is fixedly connected to the solar panel, and the lower end of which passes through the monitoring box and is fixedly connected to a battery; a battery fixedly connected inside the monitoring box; a wireless transceiver also fixedly connected inside the monitoring box; a GPS locator also fixedly connected inside the monitoring box; a lighting lamp fixedly connected to the lower end of the base plate; and a display controller fixedly connected to the upper end of the monitoring box.
[0009] Preferably, the nozzle assembly includes: a paint tank, which is fixedly connected to the front end of the monitoring box; a second threaded groove, which is located at the right end of the paint tank and the opening / closing cover; a connecting screw, which is threadedly connected to the paint tank and the opening / closing cover through the second threaded groove; an opening / closing cover, which is rotatably connected to the upper end of the paint tank; a paint delivery pipe, which is fixedly connected to the lower end of the paint tank, and the lower end of the paint delivery pipe is fixedly connected to the spray gun head; a third solenoid valve, which is fixedly connected to the middle of the paint delivery pipe; a spray gun head, which is also fixedly connected to the lower end of the base plate and the lower end of the monitoring box; and an electric heating element, which is fixedly connected to the paint tank.
[0010] Preferably, the rotating plate, the fixed frame, the drive motor, and the Mecanum wheel are each provided in four sets.
[0011] Preferably, the shock-absorbing airbags are provided in four sets.
[0012] Preferably, there are two sets of lighting lamps, both located at the bottom of the base plate.
[0013] This utility model has the following advantages: This utility model provides a mobile inspection vehicle for detecting defects in bridge expansion joints, which has the following improvements compared with similar equipment:
[0014] The mobile inspection vehicle for detecting bridge expansion joint defects described in this utility model is equipped with a nozzle assembly that can automatically spray markings on the defect locations, making it more convenient to automatically spray markings when defects are detected without manual marking. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the base assembly structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the monitoring component structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the control component structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the nozzle assembly structure of this utility model.
[0020] The components include: base assembly-1, base plate-11, rotating plate-12, first threaded groove-13, fixing bracket-14, screw-15, drive motor-16, Mecanum wheel-17, monitoring assembly-2, monitoring box-21, side panoramic camera-22, bottom camera-23, air pump-24, air supply pipe-25, first solenoid valve-26, second solenoid valve-27, shock-absorbing airbag-28, control assembly-3, solar power panel-31, power transmission line-32, battery-33, wireless signal transceiver-34, GPS locator-35, lighting lamp-36, display controller-37, nozzle assembly-4, paint tank-41, second threaded groove-42, connecting screw-43, opening and closing cover-44, paint supply pipe-45, third solenoid valve-46, spray gun head-47, and electric heating element-48. Detailed Implementation
[0021] The following is in conjunction with the appendix Figures 1-5 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0022] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0024] Example 1:
[0025] Please see Figures 1-5This utility model discloses a mobile inspection vehicle for detecting defects in bridge expansion joints, comprising a base assembly 1, a monitoring assembly 2, a control assembly 3, and a nozzle assembly 4. The upper end of the base assembly 1 is fixedly connected to the monitoring assembly 2, and the upper end of the monitoring assembly 2 is fixedly connected to the control assembly 3. The nozzle assembly 4 is also fixedly connected inside the monitoring assembly 2. The feature is that the base assembly 1 is further comprising a base plate 11 with its left and right ends rotatably connected to a rotating plate 12. The rotating plate 12 is provided with a first threaded groove 13, which is also provided at the lower end of a fixed frame 14. The upper end of the fixed frame 14 is fixedly connected to the lower end of a shock-absorbing airbag 28. A screw 15 is threadedly connected to the fixed frame 14 and the rotating plate 12 through the first threaded groove 13. A drive motor 16 is slidably connected between the rotating plate 12 and the fixed frame 14. After the drive motor 16 is started, it can drive the Mecanum wheel 17 to rotate. The Mecanum wheel 17 is fixedly connected to the drive shaft in the middle of the drive motor 16. The rotating plate 12, the fixed frame 14, the drive motor 16, and the Mecanum wheel 17 are each provided with four sets.
[0026] The monitoring component 2 consists of a monitoring box 21 fixedly connected to the upper end of the base plate 11, a side panoramic camera 22 fixedly connected to the four ends of the monitoring box 21 (front, back, left, and right), a bottom camera 23 fixedly connected to the lower end of the monitoring box 21, and an air pump 24 fixedly connected inside the monitoring box 21. When the air pump 24 is started, it can deliver air to the shock-absorbing airbag 28 or the paint box 41 through the air supply pipe 25 when the first solenoid valve 26 or the second solenoid valve 27 is opened. The air supply pipe 25 is fixedly connected to the upper end of the air pump 24, and the upper end of the air supply pipe 25 is fixedly connected to the shock-absorbing airbag 28 and the paint box 41. The first solenoid valve 26 is fixedly connected to the air supply pipe 25 connected to the shock-absorbing airbag 28, and the second solenoid valve 27 is fixedly connected to the air supply pipe 25 connected to the paint box 41. The upper end of the shock-absorbing airbag 28 is fixedly connected to the upper end of the base plate 11. There are four sets of shock-absorbing airbags 28.
[0027] The control component 3 includes a solar panel 31 fixedly connected to the upper end of the monitoring box 21, a power transmission line 32 whose upper end is fixedly connected to the solar panel 31, and a power transmission line 32 whose lower end passes through the monitoring box 21 and is fixedly connected to a battery 33, which is fixedly connected inside the monitoring box 21. A wireless transceiver 34 is also fixedly connected inside the monitoring box 21, and a GPS locator 35 is also fixedly connected inside the monitoring box 21. The GPS locator 35 can detect the position of this device. A lighting lamp 36 is fixedly connected to the lower end of the base plate 11, and a display controller 37 is fixedly connected to the upper end of the monitoring box 21. There are two sets of lighting lamps 36, both located at the lower end of the base plate 11.
[0028] This utility model provides an improved mobile inspection vehicle for detecting defects in bridge expansion joints, the working principle of which is as follows;
[0029] First, when using this device, place it in the work area and then connect it to an external power source to provide the necessary electrical energy for its operation.
[0030] Secondly, when this device is needed, it can be wirelessly connected to an external host IoT device via the wireless transceiver 34 to control the device. The operator can send a wireless signal from the external host to the wireless transceiver 34, which then sends the signal to the display controller 37 for processing and to control the activation of other components. The display controller 37 can then control the drive motor 16 to rotate the Mecanum wheel 17, moving the device to a designated position. Simultaneously, it controls the side panoramic camera 22 to monitor the surrounding area and send the monitored image data to the display controller 37 via a data cable for processing. After receiving the image data signal, the display controller 37 can then wirelessly transmit and receive the data. The device 34 wirelessly transmits image data to an external host for processing and display. When the device is placed in an external environment and exposed to sunlight, the sunlight can come into contact with the solar panel 31 to generate electricity. The electricity is then transmitted to the battery 33 via the transmission line 32 for charging and storage. When the device is moved and vibration needs to be reduced, the air pump 24 and the first solenoid valve 26 can be activated. After the air pump 24 is activated, air can be delivered to the shock-absorbing airbag 28 through the air pipe 25 for inflation and expansion, and then the first solenoid valve 26 can be closed. When the device is moved, it can drive the Mecanum wheel 17 and its upper components to vibrate, which in turn drives the rotating plate 12 and its upper components to rotate. When the fixed frame 14 rotates, it can drive the shock-absorbing airbag 28 to extend and retract to reduce vibration.
[0031] Example 2:
[0032] Please see Figures 1-5 This utility model discloses a mobile inspection vehicle for detecting defects in bridge expansion joints. Compared with Embodiment 1, this embodiment further includes: a nozzle assembly 4; a paint tank 41 fixedly connected to the front end of the monitoring box 21; a second threaded groove 42 located at the right end of the paint tank 41 and the opening / closing cover 44; a connecting screw 43 threadedly connected to the paint tank 41 and the opening / closing cover 44 through the second threaded groove 42; the opening / closing cover 44 rotatably connected to the upper end of the paint tank 41; a paint delivery pipe 45 fixedly connected to the lower end of the paint tank 41; the lower end of the paint delivery pipe 45 fixedly connected to the spray gun head 47; a third solenoid valve 46 fixedly connected to the middle of the paint delivery pipe 45; when the third solenoid valve 46 is opened, the paint in the paint tank 41 can be delivered to the spray gun head 47 through the paint delivery pipe 45 for spraying; the spray gun head 47 is also fixedly connected to the lower end of the base plate 11 and the lower end of the monitoring box 21; and an electric heating element 48 fixedly connected to the paint tank 41.
[0033] In this embodiment:
[0034] First, when it is necessary to mark the location of the defect, the display controller 37 can be used to control the lighting 36 and the bottom camera 23 to start. After the lighting 36 is started, the bottom of the device can be illuminated to facilitate detection. After the bottom camera 23 is started, the defects of the bridge expansion joint can be detected. When the defect is detected, the data is sent to the display controller 37 through the data cable for simultaneous processing. The GPS locator 35 is started to locate the device and the defect location. The display controller 37 sends the data signal to the external host for display and prompt. At the same time, the display controller 37 controls the air pump 24, the second solenoid valve 27 and the electric heating element 48 to start. After the air pump 24 is started, air can be delivered to the paint tank 41 through the air supply pipe 25 for pressurization. After the electric heating element 48 is started, the paint in the paint tank 41 can be heated to prevent the paint from solidifying in the paint tank 41. Then, the third solenoid valve 46 is started to open, so that the paint in the paint tank 41 can be delivered to the spray gun head 47 through the paint supply pipe 45 by the air pressure for spraying and marking the defect location.
[0035] This utility model provides an improved mobile inspection vehicle for detecting defects in bridge expansion joints. By setting up a nozzle assembly 4 that can automatically spray markings on the defect locations, the device can automatically spray markings when defects are detected, which is more convenient.
[0036] The above describes the basic principles, main features, and advantages of this utility model. All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be detailed here.
[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A mobile inspection vehicle for detecting defects in bridge expansion joints, comprising a base assembly (1), a monitoring assembly (2), a control assembly (3), and a nozzle assembly (4), wherein the upper end of the base assembly (1) is fixedly connected to the monitoring assembly (2), the upper end of the monitoring assembly (2) is fixedly connected to the control assembly (3), and the nozzle assembly (4) is also fixedly connected within the monitoring assembly (2), characterized in that: It also includes a base assembly (1); The base plate (11) is rotatably connected to the rotating plate (12) at its left and right ends; A rotating plate (12) is provided with a first threaded groove (13); The first threaded groove (13) is also provided at the lower end of the fixing frame (14); A fixing frame (14) is fixedly connected at its upper end to the lower end of the shock-absorbing airbag (28); Screw (15), the screw (15) being threadedly connected to the fixing bracket (14) and the rotating plate (12) through the first threaded groove (13); A drive motor (16) is slidably connected between a rotating plate (12) and a fixed frame (14); Mecanum wheel (17), which is fixedly connected to the drive shaft in the middle of the drive motor (16).
2. The mobile inspection vehicle for detecting defects in bridge expansion joints according to claim 1, characterized in that: The monitoring component (2) includes; The monitoring box (21) is fixedly connected to the upper end of the base plate (11); A side panoramic camera (22) is fixedly connected to the front, back, left, and right ends of the monitoring box (21); Bottom camera (23), which is fixedly connected to the lower end of the monitoring box (21); An air pump (24) is fixedly connected inside the monitoring box (21); An air supply pipe (25) is fixedly connected to the upper end of an air pump (24), and the upper end of the air supply pipe (25) is fixedly connected to a shock-absorbing airbag (28) and a paint box (41). The first solenoid valve (26) is fixedly connected to the air supply pipe (25) connected to the shock-absorbing airbag (28); The second solenoid valve (27) is fixedly connected to the air supply pipe (25) connected to the paint box (41); Shock-absorbing airbag (28), the upper end of which is fixedly connected to the upper end of the base plate (11).
3. The mobile inspection vehicle for detecting defects in bridge expansion joints according to claim 1, characterized in that: The control component (3) includes; A solar power panel (31) is fixedly connected to the upper end of the monitoring box (21); The upper end of the power transmission line (32) is fixedly connected to the solar power generation panel (31), and the lower end of the power transmission line (32) passes through the monitoring box (21) and is fixedly connected to the storage battery (33). A storage battery (33) is fixedly connected inside the monitoring box (21); A wireless transceiver (34) is also fixedly connected inside the monitoring box (21); GPS locator (35), which is also fixedly connected inside the monitoring box (21); Lighting lamp (36), which is fixedly connected to the lower end of the base plate (11); The display controller (37) is fixedly connected to the upper end of the monitoring box (21).
4. The mobile inspection vehicle for detecting defects in bridge expansion joints according to claim 1, characterized in that: The nozzle assembly (4) includes; Paint box (41), which is fixedly connected to the front end of monitoring box (21); The second threaded groove (42) is located at the right end of the paint box (41) and the opening and closing cover (44); A connecting screw (43) is threadedly connected to the paint box (41) and the opening and closing cover (44) through a second threaded groove (42); Opening and closing cover (44), the opening and closing cover (44) is rotatably connected to the upper end of the paint box (41); Paint supply pipe (45), the paint supply pipe (45) is fixedly connected to the lower end of the paint tank (41), and the lower end of the paint supply pipe (45) is fixedly connected to the spray gun head (47); The third solenoid valve (46) is fixedly connected to the middle of the paint delivery pipe (45); The spray gun head (47) is also fixedly connected to the lower end of the base plate (11) and the lower end of the monitoring box (21); Heating element (48) is fixedly connected to paint box (41).
5. The mobile inspection vehicle for detecting defects in bridge expansion joints according to claim 1, characterized in that: The rotating plate (12), the fixed frame (14), the drive motor (16), and the Mecanum wheel (17) are each provided with four sets.
6. The mobile inspection vehicle for detecting defects in bridge expansion joints according to claim 2, characterized in that: The shock-absorbing airbags (28) are provided in four groups.
7. The mobile inspection vehicle for detecting defects in bridge expansion joints according to claim 3, characterized in that: The lighting lamps (36) are provided in two sets, both located at the bottom of the base plate (11).
Citation Information
Cited By
Gap laser detection device for bridge engineering
CN122041727A