CN219325934U - Unmanned aerial vehicle system for checking diseases at bottom of overhead bridge - Google Patents

Abstract

The utility model relates to a bridge engineering detection system, in particular to an unmanned aerial vehicle system for detecting diseases at the bottom of an overhead bridge, which comprises an unmanned aerial vehicle body, a connecting cable and a control end assembly, wherein the unmanned aerial vehicle body is electrically connected with the control end assembly through the connecting cable; the center of the unmanned aerial vehicle body is provided with a detection camera; the unmanned aerial vehicle organism on be connected with a plurality of propellers through the wing arm, the outside cover of propeller be equipped with the protection casing of being connected on the wing arm, protection casing top center be connected with the gyro wheel through flexible support piece. Compared with the prior art, the unmanned aerial vehicle detection device solves the problem that in the prior art, the unmanned aerial vehicle is easy to hit a propeller when being detected at the beam bottom, so that the unmanned aerial vehicle is damaged, and the safety guarantee of the unmanned aerial vehicle and the normal development of the beam bottom detection are realized.

Description

An unmanned aerial vehicle system to inspect beam bottom diseases of viaduct bridges

technical field

The utility model relates to a bridge engineering detection system, in particular to an unmanned aerial vehicle system for inspecting beam bottom diseases of viaducts.

Background technique

The disease of the girder bottom in the bridge structure is the most important and critical factor affecting the operation safety of the bridge structure in the process of operation. After the design and construction of the bridge is completed, it is necessary to regularly arrange manual inspections, so that structural damage can be detected in time, the structural state can be evaluated in time, and corresponding diagnosis, treatment, repair and reinforcement work can be made. During the inspection process, the beam bottom has always been the most concerned position, and it is also the position where the disease is more concentrated.

In urban viaducts, the bridge substructure is generally located in the center or on both sides of the road, including supporting piers and cover beams, and above the cover beams, the bridge superstructure forms a road in the air. Since the viaduct also has traffic requirements under the bridge, the pier of the general urban viaduct will be designed with a height of several meters or even tens of meters to avoid mutual influence. However, due to this height, it is difficult to observe closely by traditional manual operations during the survey. It is necessary to use a bridge inspection vehicle or a climbing vehicle to approach the bottom of the beam before continuing the survey. However, no matter which mode is used, it involves the monitoring of the road. The blockade, in turn, will affect urban traffic, especially for areas with large traffic flows, which are prone to serious congestion.

For this reason, it becomes a possible solution to approach bridges mechanically with the help of small UAVs, such as the UAV devices disclosed in Chinese patents CN201721144472.X, CN202021703883.X, etc. However, traditional UAVs and UAVs of the prior art cannot overcome the problem of poor signal at the bottom of the beam, making it difficult to control the flight of UAVs, causing the propellers to easily collide with bridge structures or other structures, resulting in unmanned machine damage. Therefore, it is necessary to provide an unmanned aerial vehicle system to avoid damage caused by collision of the unmanned aerial vehicle during use.

Utility model content

The purpose of this utility model is to solve at least one of the above-mentioned problems and provide an unmanned aerial vehicle system for inspecting the defects of the beam bottom of the viaduct, so as to solve the problem that the unmanned aerial vehicle is easy to hit the propeller when detecting at the bottom of the beam in the prior art. The problem of damage to the UAV has realized the safety guarantee of the UAV and the normal development of the inspection of the beam bottom.

The purpose of this utility model is achieved through the following technical solutions:

An unmanned aerial vehicle system for inspecting beam bottom defects of viaducts, comprising an unmanned aerial vehicle body, a connecting cable and a control end assembly, wherein the unmanned aerial vehicle body is electrically connected to the control end assembly through the connecting cable;

The center of the drone body is equipped with a detection camera;

The body of the drone is connected with a plurality of propellers through the wing arms, the outer cover of the propellers is provided with a protective cover connected to the wing arms, and the top center of the protective cover is connected with a roller through a flexible support.

Preferably, the bottom of the drone body is provided with a plurality of supporting feet.

Preferably, the detection camera is installed on the platform, and the platform is installed at the center of the drone body.

Preferably, the rollers are arranged at equal heights.

Preferably, the rollers are universal wheels.

Preferably, the flexible supporting member is a spring brace.

Preferably, the connection cable includes a power supply cable and a signal transmission line.

Preferably, the control terminal assembly includes a power supply and a remote control handle;

The power supply is electrically connected to the drone body through a connecting cable;

The remote control handle is electrically connected to the drone body through a connection cable, or the remote control handle is wirelessly connected to the drone body.

Preferably, the power supply is a backpack battery or an outdoor mobile power supply, and the power supply supplies power to the drone body through a power supply cable.

Preferably, the remote control handle is provided with a video signal output device. The remote control handle is connected to the UAV body through a signal transmission line to control the movement of the UAV body; the video signal output device is connected to the detection camera through a signal transmission line to display the imaging picture of the detection camera in real time.

The working principle of the utility model is:

By taking off the UAV and approaching the bottom of the beam, video inspection can be performed on the position to be detected. The protective cover set outside the propeller can effectively prevent horizontal bumps, and the flexible support and rollers set on the top of the protective cover can prevent the propeller from being bumped from the top.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides lift through multiple sets of propellers, lifts the UAV equipped with a pan-tilt camera to the bottom of the beam for detection, and through a series of protection and power supply measures, ensures the safety of the equipment at the bottom of the beam, and realizes the urban elevated bridge beam bottom Disease does not block traffic detection.

The propeller is covered with a protective cover to prevent the propeller from touching the bottom of the beam and damage the structure; the upper part of the propeller is equipped with spring braces and rollers, so that the UAV can contact the main beam through the rollers after approaching the bottom of the beam, which can prevent the propeller from touching the main beam and Fixed distance detection and other functions.

Through the form of wired connection, the drone’s continuous power supply and signal transmission without delay are guaranteed, and the video signal can be fed back to the remote control handle in time for the inspector to observe in real time, which can reduce the control delay and accurately locate the problem when it is found. There is no need to repeatedly adjust the position due to control delays.

Description of drawings

Fig. 1 is the structure schematic diagram of UAV system;

Fig. 2 is the structural representation of unmanned aerial vehicle body;

In the figure: 1-bridge pier; 2-main bridge girder; 3-inspector; 4-power supply; 5-remote control handle; 6-connecting cable; 7-UAV body; 701-supporting feet; 703-propeller; 704-flexible support; 705-roller; 706-detection camera.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

An unmanned aerial vehicle system for inspecting beam bottom defects of viaducts, as shown in Figure 1 and Figure 2, includes an unmanned aerial vehicle body 7, a connecting cable 6 and a control terminal assembly, and the unmanned aerial vehicle body 7 passes through the connecting line The cable 6 is electrically connected to the control end assembly;

A detection camera 706 is installed at the center of the drone body 7;

The drone body 7 is connected with a plurality of propellers 703 through the wing arms, and the outer cover of the propellers 703 is provided with a protective cover 702 connected to the wing arms, and the center of the top of the protective cover 702 passes through a flexible support 704 is connected with roller 705.

More specifically, in this example:

The UAV system in this embodiment is carried and used by the inspector 3, and specifically includes the UAV body 7, the connecting cable 6 and the control terminal assembly. As shown in Figure 1, when the inspector 3 travels under the elevated bridge to be inspected, take off between the UAV body 7 and the bridge pier 1, close to the main beam 2 of the bridge; connect the UAV body 7 and the control end components The connecting cables 6 between them are automatically stretched to meet the flight distance of the drone body 7.

The UAV body 7 is shown in FIG. 2 , and is connected with a propeller 703 through a plurality of wing arms, and commonly used structures such as four-rotor, six-rotor, and octa-rotor can be adopted. The outer cover of propeller 703 is provided with protective cover 702, and protective cover 702 is connected on the wing arm, and protective cover 702 perforates up and down to pass airflow, can reduce the force when propeller 703 collides in horizontal direction by protective cover 702, and then protects propeller The structure of 703 is safe; furthermore, the top of the protective cover 702 is connected with a roller 705 through a flexible support 704. When the flying height of the drone body 7 is high, the roller 705 first touches the bottom surface of the bridge girder 2, resulting in The pressure is absorbed by the flexible support 704 . In addition, the height of the rollers 705 corresponding to each propeller 703 is consistent, so that the UAV can use the plane at the bottom of the bridge girder 2 to achieve a fixed distance detection; the rollers 705 can facilitate the horizontal movement of the UAV along the bridge girder 2 . Preferably, the roller 705 is a universal wheel to assist the movement of the drone in the horizontal plane; the flexible support 704 adopts a spring brace, which can effectively absorb the thrust generated during an accidental collision and reduce the impact on the drone body 7. damage.

The UAV body 7 is connected with a support foot 701 at the bottom, and a detection camera 706 is installed at the central position. The detection camera 706 is installed on the central position of the UAV body 7 through a cloud platform, and vibration is provided by a mechanical or electronic platform. The damping can effectively reduce the influence of vibration on the quality of image shooting caused by self-vibration or collision with pier 1 and bridge girder 2 .

The connection cable 6 connected to the UAV body 7 includes a power supply cable and a signal transmission line, which can provide power for the UAV body 7 through the control terminal assembly and can also perform wired data exchange.

The control terminal components include a power supply 4 and a remote control handle 5; the power supply 4 can use a backpack battery or an outdoor mobile power supply, which can provide sufficient power and is more convenient to carry. The power supply 4 supplies power continuously to the drone body 7 through a power supply cable; the remote control The handle 5 can be powered by a battery, or can be connected to the power supply 4 for power supply. The remote control handle 5 is also integrated with a video signal output device, such as a display screen. The remote control handle 5 can be wired (signal transmission line) or wireless (Bluetooth, network) In addition to controlling the flight operation of the UAV body 7, the imaging screen of the detection camera 706 can also be transmitted to the video signal output device in real time for visual observation by the inspector 3. The control of the remote control handle 5 is preferably wired transmission, which can avoid signal attenuation, signal delay and signal loss, and at the same time ensure that the picture seen by the inspector 3 is a real-time picture, which can quickly locate the problem when it is found; when the connecting cable 6 is not long enough When reaching the flying position of the UAV body 7, the connection cable 6 on the UAV body 7 can be unplugged, and the battery module built in the UAV body 7 can be used to supply power and transmit the power between the communication module and the remote control handle 5. Signal. The built-in parts of the UAV body 7, such as the battery module, the communication module, and the UAV body 7 itself, can directly adopt the mechanism and connection method of the prior art. This part does not belong to the improvement point of this application, and no additional description is made. Further, in order to adopt wired connection as much as possible in the detection process, to avoid signal transmission problems, and to avoid the intertwining between the connection cables 6 and the influence of the redundant connection cables 6 on the normal movement of the inspector 3, you can The component is correspondingly provided with an automatic take-up reel for controlling the automatic expansion and contraction of the connecting cable 6. Similarly, commercially available products of appropriate specifications can be directly selected. At this time, the signal transmission line of the remote control handle 5 can be connected to the inside of the power supply 4 and connected to the power supply 4. An automatic take-up reel is arranged inside, thereby avoiding the situation that the remote control handle 5 is too large to be difficult to use.

The above description of the embodiments is for those of ordinary skill in the technical field to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative effort. Therefore, the utility model is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the utility model without departing from the category of the utility model should be within the protection scope of the utility model.

Claims (10)

1. The unmanned aerial vehicle system for checking the diseases at the bottom of the overhead bridge is characterized by comprising an unmanned aerial vehicle body (7), a connecting cable (6) and a control end assembly, wherein the unmanned aerial vehicle body (7) is electrically connected with the control end assembly through the connecting cable (6);

a detection camera (706) is arranged at the center of the unmanned aerial vehicle body (7);

the unmanned aerial vehicle organism (7) on be connected with a plurality of propellers (703) through the wing arm, the outside cover of propeller (703) be equipped with and connect protection casing (702) on the wing arm, protection casing (702) top center be connected with gyro wheel (705) through flexible support piece (704).

2. An unmanned aerial vehicle system for inspecting diseases of an elevated bridge floor according to claim 1, wherein a plurality of support feet (701) are provided at the bottom of the unmanned aerial vehicle body (7).

3. The unmanned aerial vehicle system for detecting diseases of the bottom of an overhead bridge according to claim 1, wherein the detecting camera (706) is mounted on a cradle head, and the cradle head is mounted at the center of the unmanned aerial vehicle body (7).

4. An unmanned aerial vehicle system for inspecting an elevated bridge floor according to claim 1, wherein the rollers (705) are equi-high.

5. An unmanned aerial vehicle system for inspecting an elevated bridge floor according to claim 4, wherein the rollers (705) are universal wheels.

6. An unmanned aerial vehicle system for inspecting an elevated bridge floor for defects according to claim 1, wherein the flexible support (704) is a spring strut.

7. An unmanned aerial vehicle system for inspecting an elevated bridge floor for defects according to claim 1, wherein the connecting cable (6) comprises a power cable and a signal transmission line.

8. An unmanned aerial vehicle system for inspecting an elevated bridge floor for disease according to claim 7, wherein the control terminal assembly comprises a power source (4) and a remote control handle (5);

the power supply (4) is electrically connected with the unmanned aerial vehicle body (7) through a connecting cable (6);

the remote control handle (5) and the unmanned aerial vehicle body (7) are electrically connected through a connecting cable (6), or the remote control handle (5) and the unmanned aerial vehicle body (7) are in wireless connection.

9. An unmanned aerial vehicle system for inspecting the bottom of an overhead bridge according to claim 8, wherein the power supply (4) is a backpack cell or an outdoor mobile power supply.

10. An unmanned aerial vehicle system for inspecting an elevated bridge floor according to claim 8, wherein the remote control handle (5) is provided with a video signal output device.

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