Bolt and nut detection device for catenary davit

Abstract

The invention relates to a bolt and nut detection device for a catenary davit, which comprises a vehicle main body, a position adjusting mechanism and a detection mechanism, and is characterized in that the vehicle main body can run along the extension direction of a track in a tunnel; the position adjusting mechanism is installed on the vehicle body and comprises a mechanical arm. The detection mechanism is installed on the mechanical arm and can be driven by the position adjusting mechanism to adjust the position relative to the vehicle body. Wherein the detection mechanism comprises an ultrasonic flaw detector and / or an electromagnetic ultrasonic detector, the ultrasonic flaw detector is used for detecting the internal damage of a bolt of the davit, and the electromagnetic ultrasonic detector is used for detecting the pre-tightening force of a nut of the davit. The device and the method have the advantages that the ultrasonic flaw detector and the electromagnetic ultrasonic detector are utilized to realize high-precision internal defect and stress measurement and integrated nondestructive testing of bolts and nuts, and safety and reliability of davit connection are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bolt and nut testing technology, and in particular to a bolt and nut testing device for overhead contact line suspension columns. Background Technology

[0002] The overhead contact line is a special type of power transmission line erected above railway lines to supply electrical energy to electric locomotives. In tunnel environments, the contact line is suspended from the tunnel ceiling by pylons, which are then secured to the ceiling with multiple bolts and nuts. These bolts and nuts are the core installation points for the pylons; if the bolts have internal cracks or the nuts are not sufficiently tightened, it can lead to an imbalance in stress distribution. Under long-term vibration, this can cause fatigue fracture, resulting in the contact line detaching and causing a safety accident. Current bolt and nut inspections are typically performed manually. However, due to limited working space within tunnels and the influence of subjective judgment, the accuracy of these inspections is low, and they cannot detect internal damage. Summary of the Invention

[0003] The purpose of this invention is to solve the problems mentioned in the background art and to provide a bolt and nut detection device for contact wire suspension columns.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: A bolt and nut testing device for overhead contact line suspension columns, comprising: The main body of the vehicle is capable of traveling along the extension direction of the track within the tunnel; A position adjustment mechanism is installed on the vehicle body, and the position adjustment mechanism includes a robotic arm; The detection mechanism is mounted on the robotic arm and can adjust its position relative to the vehicle body under the drive of the position adjustment mechanism; The testing mechanism includes an ultrasonic flaw detector and / or an electromagnetic ultrasonic testing instrument. The ultrasonic flaw detector is used to detect internal damage to the bolts of the suspension column, and the electromagnetic ultrasonic testing instrument is used to detect the preload of the nut of the suspension column.

[0005] It is understandable that ultrasonic flaw detectors and / or electromagnetic ultrasonic testing instruments are used to inspect bolts and nuts. Ultrasonic flaw detectors use phased array full-focus 3D real-time imaging, which can intuitively display internal damage to the bolts. Electromagnetic ultrasonic testing instruments use the dual-wave method of electromagnetic ultrasonic technology, which utilizes the characteristic that the speed of sound changes with stress when the ultrasonic wave propagates in the bolt. By measuring the time change of ultrasonic wave propagation in the bolt, the preload of the bolt can be indirectly calculated, realizing high-precision internal defect and stress measurement, achieving integrated non-destructive testing, and ensuring the safety and reliability of the hanging column connection.

[0006] In one embodiment, the detection mechanism further includes a vision component disposed at the end of the robotic arm.

[0007] Understandably, bolts are positioned using a vision component mounted on the end of a robotic arm, which guides an ultrasonic flaw detector to inspect internal damage to the bolts and an electromagnetic ultrasonic detector to check the preload of the nut, thus achieving automated inspection.

[0008] In one embodiment, the robotic arm includes a mounting plate, the robotic arm is fixedly connected to one side of the mounting plate, and the ultrasonic flaw detector, the electromagnetic ultrasonic detector and the vision component are mounted on the other side of the mounting plate.

[0009] In one embodiment, the position adjustment mechanism further includes a rotating component, a lifting component, and a lateral component. The rotating component is mounted on the vehicle body, one end of the lifting component is connected to the rotating component, and the other end of the lifting component is connected to the lateral component. The robotic arm is mounted on the lateral movement assembly and can move laterally under the drive of the lateral movement assembly.

[0010] In one embodiment, the robotic arm includes a base, a first moving arm, a second moving arm, and a third moving arm. The base is mounted on the transverse assembly. One end of the first moving arm is rotatably connected to the base. The other end of the first moving arm is rotatably connected to one end of the second moving arm. The other end of the second moving arm is rotatably connected to one end of the third moving arm. The mounting plate is mounted on the other end of the third moving arm.

[0011] In one embodiment, the bolt and nut detection device further includes a control mechanism, which includes a remote monitoring unit and a remote control unit. The remote monitoring unit is based on a 4G / GSM network and can remotely monitor the detection mechanism in real time. The control mechanism receives remote control commands through the remote control unit and drives the vehicle body, the position adjustment mechanism, and the detection mechanism to execute the remote control commands according to the remote control commands.

[0012] In one embodiment, the control mechanism further includes a data storage unit capable of storing and transmitting data collected by the detection mechanism; The control mechanism is also equipped with an interlocking safety mechanism.

[0013] In one embodiment, a total station is installed on the vehicle body.

[0014] In one embodiment, the vehicle body includes a flatbed truck and a power control cabinet, with the power control cabinet mounted on the flatbed truck.

[0015] In one embodiment, the flatbed truck is also equipped with a driver's cab and a control room.

[0016] Effects of the invention: This invention claims a bolt and nut inspection device for overhead contact line suspension columns. It uses an ultrasonic flaw detector and an electromagnetic ultrasonic testing instrument to inspect the bolts and nuts. The ultrasonic flaw detector employs phased array full-focus 3D real-time imaging, which can visually display internal bolt damage. The electromagnetic ultrasonic testing instrument uses the dual-wave method of electromagnetic ultrasonic technology, utilizing the characteristic that the speed of sound changes with stress when the ultrasonic wave propagates in the bolt. By measuring the time change of ultrasonic wave propagation in the bolt, the preload of the bolt is indirectly calculated, achieving high-precision internal defect and stress measurement. This integrated non-destructive testing ensures the safety and reliability of the suspension column connection and realizes integrated inspection of the suspension column and bolts / nuts. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a bolt and nut detection device in a tunnel provided in an embodiment of the present invention; Figure 2 This is a perspective view of a bolt and nut detection device provided in an embodiment of the present invention; Figure 3 for Figure 1 Enlarged view of point P in the image.

[0019] Reference numerals: 100, Bolt and nut detection device; 10, Vehicle body; 11, Flatbed truck; 12, Power control cabinet; 20, Position adjustment mechanism; 21, Robotic arm; 211, Mounting plate; 212, Base; 213, First moving arm; 214, Second moving arm; 215, Third moving arm; 22, Rotating assembly; 23, Lifting assembly; 24, Lateral movement assembly; 30, Detection mechanism; 31, Ultrasonic flaw detector; 32, Electromagnetic ultrasonic detector; 33, Vision assembly; 40, Total station; 200, Hanging column; 300, Tunnel. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification 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 in this specification includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 3An embodiment of the present invention provides a bolt and nut detection device 100 for a contact wire suspension column 200, comprising a vehicle body 10, a position adjustment mechanism 20, and a detection mechanism 30. The vehicle body 10 is capable of traveling along the extension direction of the track within a tunnel 300. The position adjustment mechanism 20 is mounted on the vehicle body 10 and includes a robotic arm 21. The detection mechanism 30 is mounted on the robotic arm 21 and is capable of adjusting its position relative to the vehicle body 10 under the drive of the position adjustment mechanism 20.

[0026] The testing mechanism 30 includes an ultrasonic flaw detector 31 and / or an electromagnetic ultrasonic detector 32. The ultrasonic flaw detector 31 is used to detect internal damage to the bolts of the hanging column 200, and the electromagnetic ultrasonic detector 32 is used to detect the preload of the nuts of the hanging column 200. The ultrasonic flaw detector 31 adopts phased array full-focus 3D real-time imaging, which can intuitively display the internal damage of the bolts. The electromagnetic ultrasonic detector 32 adopts the dual-wave method of electromagnetic ultrasonic technology, which utilizes the characteristic that the sound velocity changes with stress when the ultrasonic wave propagates in the bolt. By measuring the time change of the ultrasonic wave propagation in the bolt, the preload of the bolt is indirectly calculated, realizing high-precision internal defect and stress measurement, realizing integrated non-destructive testing, and ensuring the safety and reliability of the connection of the hanging column 200.

[0027] In one embodiment, the inspection mechanism 30 further includes a vision component 33, which is disposed at the end of the robotic arm 21. The vision component 33 installed at the end of the robotic arm 21 is used to position the bolt and nut, so as to assist the ultrasonic flaw detector 31 and the electromagnetic ultrasonic detector 32 in aligning the bolt and nut, guiding the ultrasonic flaw detector 31 to detect internal damage to the bolt, and guiding the electromagnetic ultrasonic detector 32 to detect the preload of the nut, thereby realizing automated inspection.

[0028] In this embodiment, the robotic arm 21 includes a mounting plate 211, which is fixedly connected to one side of the mounting plate 211. The ultrasonic flaw detector 31, the electromagnetic ultrasonic detector 32, and the vision component 33 are all mounted on the other side of the mounting plate 211, realizing integrated detection of bolts and nuts.

[0029] Furthermore, the position adjustment mechanism 20 also includes a rotating component 22, a lifting component 23, and a lateral movement component 24. The rotating component 22 is mounted on the vehicle body 10. One end of the lifting component 23 is connected to the rotating component 22, and the other end of the lifting component 23 is connected to the lateral movement component 24. The robotic arm 21 is mounted on the lateral movement component 24 and can move laterally under the drive of the lateral movement component 24. The rotating component 22 can drive the lifting component 23 to rotate. The lifting component 23 can extend or retract along its own height direction to drive the lateral movement component 24 and the robotic arm 21 to move up and down. The robotic arm 21 itself has multiple joints, which can flexibly move and drive multiple functional components at the end of the robotic arm 21 to move. Thus, when inspecting bolts and nuts at multiple positions on the hanging column 200, the inspection mechanism 30 can flexibly adjust its posture under the drive of the position adjustment mechanism 20, which helps to improve the inspection accuracy.

[0030] like Figure 3 As shown, specifically, the robotic arm 21 includes a base 212, a first moving arm 213, a second moving arm 214, and a third moving arm 215. The first and second moving arms 213 and 214 are relatively longer, while the third moving arm 215 is relatively shorter. The base 212 is mounted on the transverse translation assembly 24. One end of the first moving arm 213 is rotatably connected to the base 212, and the other end of the first moving arm 213 is rotatably connected to one end of the second moving arm 214. The other end of the second moving arm 214 is rotatably connected to one end of the third moving arm 215. A mounting plate 211 is mounted on the other end of the third moving arm 215. This facilitates high-precision pose adjustment of the robotic arm 21.

[0031] In one embodiment, the bolt and nut detection device 100 further includes a control mechanism, which comprises a remote monitoring unit and a remote control unit. The remote monitoring unit, based on a 4G / GSM network, is capable of remotely monitoring the detection mechanism 30 in real time. The remote monitoring unit is centrally integrated into a smart construction site management terminal, supporting remote real-time monitoring of the device and facilitating equipment maintenance. The control mechanism receives remote control commands through the remote control unit and drives the vehicle body 10, position adjustment mechanism 20, and detection mechanism 30 to execute the remote control commands accordingly. The remote control unit is developed based on short-range wireless communication, supporting remote control functionality at the construction site, reducing the labor intensity of on-site construction personnel, and improving construction safety. The remote monitoring unit and remote control unit can also achieve real-time visualization of the detection process through the vision component 33.

[0032] In one embodiment, the control mechanism further includes a data storage unit capable of storing and transmitting data collected by the detection mechanism 30. The control mechanism includes a data storage unit capable of storing and transmitting data collected by the detection mechanism 30. The control mechanism has an interlocking safety mechanism, which enhances the operational safety of the bolt and nut detection device 100 and prevents collisions caused by human error.

[0033] In one embodiment, a total station 40 is installed on the vehicle body 10. The total station 40 can quickly scan the cross-sectional shape of the tunnel 300 and generate a digital model of the actual outline.

[0034] In one embodiment, the vehicle body 10 includes a flatbed 11 and a power control cabinet 12, with the power control cabinet 12 mounted on the flatbed 11. The flatbed 11 has a flat body to facilitate the transport of various components.

[0035] The flatbed truck 11 is equipped with a driver's cab and a control room, which are located at the front of the flatbed truck 11.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the patent protection scope of the present invention should be determined by the appended claims.

Claims

1. A bolt and nut testing device for overhead contact line suspension columns, characterized in that, include: The vehicle body (10) is able to travel along the extension direction of the track within the tunnel (300); A position adjustment mechanism (20) is installed on the vehicle body (10), and the position adjustment mechanism (20) includes a robotic arm (21). The detection mechanism (30) is mounted on the robotic arm (21) and can adjust its position relative to the vehicle body (10) under the drive of the position adjustment mechanism (20); The testing mechanism (30) includes an ultrasonic flaw detector (31) and / or an electromagnetic ultrasonic detector (32). The ultrasonic flaw detector (31) is used to detect internal damage to the bolts of the hanging column (200), and the electromagnetic ultrasonic detector (32) is used to detect the preload of the nut of the hanging column (200).

2. The bolt and nut detection device for contact wire suspension columns according to claim 1, characterized in that, The detection mechanism (30) also includes a vision component (33), which is located at the end of the robotic arm (21).

3. The bolt and nut detection device for contact wire suspension columns according to claim 2, characterized in that, The robotic arm (21) includes a mounting plate (211), which is fixedly connected to one side of the mounting plate (211). The ultrasonic flaw detector (31), the electromagnetic ultrasonic detector (32), and the vision component (33) are mounted on the other side of the mounting plate (211).

4. The bolt and nut detection device for contact wire suspension columns according to claim 3, characterized in that, The position adjustment mechanism (20) further includes a rotating component (22), a lifting component (23), and a lateral component (24). The rotating component (22) is installed on the vehicle body (10). One end of the lifting component (23) is connected to the rotating component (22), and the other end of the lifting component (23) is connected to the lateral component (24). The robotic arm (21) is mounted on the transverse component (24) and can move laterally under the drive of the transverse component (24).

5. A bolt and nut detection device for contact wire suspension columns according to claim 4, characterized in that, The robotic arm (21) includes a base (212), a first moving arm (213), a second moving arm (214), and a third moving arm (215). The base (212) is mounted on the transverse assembly (24). One end of the first moving arm (213) is rotatably connected to the base (212), and the other end of the first moving arm (213) is rotatably connected to one end of the second moving arm (214). The other end of the second moving arm (214) is rotatably connected to one end of the third moving arm (215). The mounting plate (211) is mounted on the other end of the third moving arm (215).

6. The bolt and nut detection device for contact wire suspension columns according to claim 1, characterized in that, The bolt and nut detection device (100) also includes a control mechanism, which includes a remote monitoring unit and a remote control unit. The remote monitoring unit is based on a 4G / GSM network and can remotely monitor the detection mechanism (30) in real time. The control mechanism receives remote control commands through the remote control unit and drives the vehicle body (10), the position adjustment mechanism (20) and the detection mechanism (30) to execute the remote control commands according to the remote control commands.

7. A bolt and nut detection device for contact wire suspension columns according to claim 6, characterized in that, The control mechanism also includes a data storage unit, which is capable of storing and transmitting the data collected by the detection mechanism (30); The control mechanism is also equipped with an interlocking safety mechanism.

8. A bolt and nut detection device for contact wire suspension columns according to claim 1, characterized in that, A total station (40) is installed on the vehicle body (10).

9. A bolt and nut detection device for contact wire suspension columns according to claim 1, characterized in that, The vehicle body (10) includes a flatbed truck (11) and a power control cabinet (12), with the power control cabinet mounted on the flatbed truck.

10. A bolt and nut detection device for contact wire suspension columns according to claim 9, characterized in that, The flatbed truck (11) is also equipped with a driver's cab and a control room.

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