Flaw detection device for four-bundled conductor

Abstract

The invention relates to the technical field of high-voltage line maintenance, in particular to a four-bundle conductor flaw detection device which comprises a shell, a lifting hook installed on the shell and used for being connected with an unmanned aerial vehicle, a chassis structure installed on the shell and a frame structure connected with the shell. The angle adjusting structure is connected with the chassis structure; and the angle adjusting structure is fixed with the chassis structure through a telescopic rod. Therefore, the chassis structure for the four-bundle conductor flaw detection device can solve the technical problems that the line spacing of a high-voltage transmission line is different, the spacing of action wheels of a traditional detection device is fixed, the traditional detection device cannot adapt to conductors with different line spacing, and the angle of a flaw detector is flexibly adjusted, so that the practicability of the chassis structure is greatly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of high-voltage line maintenance, and more specifically, to a four-split conductor flaw detection device. Background Art

[0002] With the booming power industry, the voltage levels of transmission lines continue to rise and their scale continues to expand, making their safe and stable operation increasingly crucial. Key components in transmission lines, such as tension clamps, conductor crimping tubes, and hardware, are susceptible to internal defects such as cracks, pores, and inclusions due to long-term exposure to high voltages, high currents, and complex environmental factors. If these defects are not discovered and addressed promptly, they can cause line failures and even power outages, posing a serious threat to the safe operation of the power system.

[0003] X-ray flaw detection technology, as an advanced nondestructive testing method, can penetrate the surface of objects and accurately detect tiny internal defects, providing strong support for the quality inspection of key transmission line components. However, traditional X-ray flaw detection devices have many limitations when applied to complex structures such as four-split conductors. Firstly, due to the varying spacing between wires on high-voltage transmission lines, the fixed spacing of the moving wheels of traditional detection devices makes them ineffective in adapting to conductors with varying spacing and the flexible angle adjustment of the flaw detector. Secondly, traditional manual tower-climbing inspection methods are not only inefficient but also expose workers to high risks of falling from height and electric shock, making them unable to meet the modern power industry's demand for safe and efficient inspections. Summary of the Invention

[0004] Based on the above problems, this application proposes a four-split conductor flaw detection device to solve the technical problem that due to the different line spacings of high-voltage transmission lines, the traditional detection device has a fixed moving wheel spacing, cannot adapt to wires with different line spacings, and the angle adjustment of the flaw detector is flexible, which greatly reduces its practicality.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A four-split conductor flaw detection device comprises a housing, a hook mounted on the housing for connecting to a drone, a chassis structure mounted on the housing, a frame structure connected to the housing, an angle adjustment structure connected to the chassis structure, and a flaw detector mounted on the angle adjustment structure; the angle adjustment structure is fixed to the chassis structure via a telescopic rod.

[0007] In a specific possible implementation scheme, the chassis structure includes a chassis frame, which is fixed to the outer shell through a column, and two mounting brackets for mounting running wheels are provided on the chassis frame, and the two mounting brackets are symmetrically arranged. The two mounting brackets are located on both sides of the chassis frame, and each mounting bracket is equipped with a wheel axle for mounting running wheels, and each mounting bracket is slidably connected to the chassis frame through the wheel axle.

[0008] In a specific possible implementation scheme, an electric push rod is fixedly mounted on the chassis frame, a mounting seat is mounted on the power output end of the electric push rod, two rotating rods are provided on the mounting seat, and one end of the two rotating rods is rotatably connected to the mounting seat.

[0009] In a specific possible implementation manner, two sliding frames are provided on the chassis frame, the two sliding frames are slidably connected to the chassis frame via sliding rails and sliding grooves, and the two sliding frames are symmetrically arranged.

[0010] In a specific possible implementation manner, the other ends of the two rotating rods are rotatably connected to the two sliding frames respectively.

[0011] In a specific possible implementation scheme, rotating columns are provided at the four corners of the chassis frame, and first connecting pieces are provided on the four rotating columns. One end of each first connecting piece is rotatably connected to each rotating column.

[0012] In a specific feasible implementation scheme, a second connecting piece is provided at both end ends of each sliding frame, the middle position of each second connecting piece is rotatably connected to the sliding frame, and the end of each first connecting piece away from the rotating column is rotatably connected to one end of each second connecting piece.

[0013] In a specific feasible implementation scheme, steering columns are provided at the four corners of each mounting frame, and a third connecting piece is rotatably provided on each steering column. One end of each third connecting piece is rotatably connected to each steering column, and one end of each third connecting piece away from the steering column is connected to one end of each second connecting piece.

[0014] In a specific feasible implementation scheme, the angle adjustment structure includes a first adjuster for realizing upper and lower angle adjustment and a second adjuster for realizing left and right angle adjustment; the first adjuster includes a first mounting plate fixedly connected to the telescopic rod, a first slot is provided on the first mounting plate, a first transverse axis is provided on the first slot, both ends of the first transverse axis are rotatably connected to the first mounting plate, a first gear is fixedly provided on the first transverse axis, a first hydraulic rod is fixedly provided on the first mounting plate, a first rack adapted to the first gear is fixedly connected to the power output end of the first hydraulic rod, the first gear is meshed with the first rack, a first limit bar is provided on the first mounting plate to prevent the first rack from offsetting the first gear, and the first limit bar is slidably connected to the first rack.

[0015] In one specific embodiment, the second adjuster includes a second transverse shaft fixedly connected to the first transverse shaft, a second mounting plate rotatably connected to the second transverse shaft, a second gear fixedly mounted on the second transverse shaft, a second hydraulic rod fixedly mounted on the second mounting plate, a second rack fixedly connected to the power output end of the second hydraulic rod, the second rack meshing with the second gear, a second limiting bar provided on the second mounting bracket for preventing offset between the second rack and the second gear, the second limiting bar slidably connected to the second rack, and the flaw detector mounted on the second mounting plate.

[0016] Positive effects of the present invention:

[0017] Variable pitch wheel design

[0018] Chassis and Sliding Mounting Frame: Two symmetrically arranged mounting frames are mounted on the chassis frame and connected to it via sliding rails and slots. Wheel axles are mounted on the mounting frames, and the distance between the running wheels can be dynamically adjusted by an electric push rod driving the sliding frame. The push rod, through the linkage of a rotating rod and the sliding frame, drives the mounting frame to slide along the chassis frame, thereby adjusting the distance between the running wheels. This design enables the device to accommodate four-split conductors with varying wire spacing, resolving the practical limitations of traditional devices due to fixed spacing.

[0019] Double degree of freedom angle adjustment structure

[0020] First adjuster (up and down angle adjustment): The first hydraulic rod drives the first rack, which in turn rotates the first gear and the first horizontal axis to achieve vertical angle adjustment of the flaw detector. The first limit bar ensures stable meshing between the rack and gear.

[0021] Second Adjuster (Left-Right Angle Adjustment): The second hydraulic rod drives the second rack, which in turn rotates the second gear and the second horizontal axis to adjust the flaw detector's left-right angle. The second limit bar ensures adjustment accuracy.

[0022] Complex adjustment capability: The dual adjuster combination enables the flaw detector to adapt to complex working conditions such as wire bending and tilting, ensuring that the X-ray detection path accurately covers the defect area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 This is a schematic structural diagram of the chassis frame of the present invention when it is retracted;

[0026] Figure 3 It is a structural schematic diagram of another angle when the chassis frame of the present invention is retracted;

[0027] Figure 4 This is a schematic structural diagram of the chassis frame of the present invention when it is opened;

[0028] Figure 5 This is a schematic structural diagram of the chassis frame of the present invention when it is opened from another angle;

[0029] Figure 6 Schematic diagram of the angle adjustment structure of the present invention;

[0030] Figure 7 This is a schematic structural diagram of the present invention with some structures hidden;

[0031] Description of Reference Numerals

[0032] 1. Housing; 2. Hook; 3. Frame structure; 4. Telescopic rod; 5. Chassis frame; 6. Column; 7. Travel wheel; 8. Mounting frame; 9. Wheel axle; 10. Electric push rod; 11. Mounting seat; 12. Rotating rod; 13. Sliding frame; 14. Rotating column; 15. First connecting piece; 16. Second connecting piece; 17. Steering column; 18. Third connecting piece; 19. First mounting plate; 20. First hydraulic rod; 21. First transverse axis; 22. First gear; 23. First rack; 24. Second transverse axis; 25. Second rack; 26. Second hydraulic rod; 27. Second gear; 28. Second limit bar; 29. ​​First limit bar; 30. Second mounting plate; 31. Flaw detector. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] Example 1

[0035] like Figure 1-6 As shown, the present application proposes a chassis system comprising a housing 1, a hook 2, a chassis structure, a frame structure 3, an angle adjustment structure, and a telescopic rod 4. A drone connection hook 2 is provided on the top of the housing 1, the chassis structure is connected to the housing 1 via the frame structure 3, and the angle adjustment structure is rigidly connected to the chassis structure via the telescopic rod 4.

[0036] Among them, the hook 2 refers to the suspension interface for connecting the drone transport device, which can be cast into an inverted U-shaped structure using high-strength alloy. Its function is to achieve rapid deployment of the device between the wires. The chassis structure refers to the base platform that supports the walking mechanism. It is formed into a rectangular frame through a welding process and is used to install the walking components with adjustable spacing. The angle adjustment structure refers to a mechanical device with multi-dimensional rotation function, including a hydraulically driven gear rack mechanism, which is used to accurately control the spatial posture of the flaw detector 31. The telescopic rod 4 refers to a telescopic support member connecting the chassis and the angle adjustment structure. The length adjustment is achieved by a sleeve-type hydraulic cylinder. Its function is to establish a linkage relationship between the chassis shape and the flaw detection angle.

[0037] Specifically, when the device is suspended from a four-wire conductor by a drone, the telescopic rod 4 automatically adjusts its length based on the conductor spacing, driving the angle adjustment mechanism to change its pitch angle. The chassis structure maintains overall stability through the frame structure 3, while allowing the mounting bracket 8 to slide laterally to accommodate varying conductor spacing. The hydraulic drive system in the angle adjustment mechanism, driven by a rack and pinion transmission, achieves precise deflection of the flaw detector within a range of 31±30° while maintaining structural rigidity. This mechanical linkage ensures that the flaw detector 31 is always perpendicular to the conductor surface, ensuring the optimal detection angle between the X-ray transmitter and the inspected area.

[0038] Compared to existing devices, which use fixed wheels (7) that result in poor adaptability to line spacing, this solution automatically adapts to line spacing within a range of 380-600mm through the synergistic effect of a slidable mounting bracket (8) and telescopic rod (4). While existing technologies require manual adjustment of the inspection angle, this solution utilizes a hydraulically driven gear transmission system, enabling three-dimensional angle adjustment of the flaw detector (31) while the drone is hovering, improving inspection efficiency by approximately 40%.

[0039] Through the above-mentioned technical solution, this application effectively solves the technical challenges of adaptability of centerline spacing and detection angle adjustment for four-split conductor inspection. The adjustable chassis structure enables the device to adapt to different transmission line specifications, and the mechanical linkage system ensures that the flaw detector 31 is always in the optimal detection position, reducing the detection blind spot by approximately 65%. While maintaining a compact structure, this solution achieves a seamless integration of drone transportation and automated inspection, reducing the risk of high-altitude operations by approximately 80%.

[0040] Example 2

[0041] The present application further proposes a chassis structure including a chassis frame 5, which is fixed to the outer shell 1 through a column 6, and two mounting frames 8 are symmetrically arranged on both sides of the chassis frame 5, and a wheel axle 9 is installed on the mounting frame 8. The mounting frame 8 is slidably connected to the chassis frame 5 through the wheel axle 9.

[0042] The chassis frame 5 is a rectangular frame structure 3 welded from high-strength aluminum alloy profiles, specifically formed by splicing aluminum profiles with I-shaped cross-sections. It is used to carry the running wheel 7 assembly and provide rigid support. The symmetrical arrangement of the mounting frames 8 means that the two mounting frames 8 are located on the slide rails on the left and right sides of the chassis frame 5, respectively. Specifically, they can be arranged in a mirror-symmetrical manner to ensure that the running wheels 7 on both sides are evenly stressed. The sliding connection between the wheel axle 9 and the chassis frame 5 means that the bottom of the mounting frame 8 is provided with a slider that cooperates with the slide rail of the chassis frame 5. Specifically, a linear bearing and guide rod can be used to cooperate to enable the mounting frame 8 to move laterally along the slide rail to adjust the spacing between the running wheels 7.

[0043] Specifically, the chassis frame 5 is fixedly connected to the outer shell 1 through the column 6, forming a stable load-bearing foundation. The two mounting frames 8 are symmetrically arranged on the slide rails on both sides of the chassis frame 5, and the bottom of the mounting frame 8 slides with the slide rails through the wheel axle 9. When the spacing between the running wheels 7 needs to be adjusted, the mounting frame 8 moves laterally along the slide rail, driving the wheel axle 9 to move synchronously, thereby changing the spacing between the running wheels 7 on both sides. The wheel axle 9 serves as a sliding guide component, and through the cooperation of the linear bearing and the guide rod, it limits the mounting frame 8 to move only along the direction of the slide rail to prevent deflection. The symmetrical layout of the mounting frame 8 enables the running wheels 7 on both sides to maintain synchronous movement during the adjustment process, ensuring the stability of the center of gravity of the device.

[0044] Compared to existing technologies, conventional detection devices typically use fixed spacing between the wheels 7 and mounting brackets 8, making them incapable of adapting to varying wire spacing requirements. This solution, however, utilizes a sliding mounting bracket 8 structure, allowing the spacing between the wheels 7 to be flexibly adjusted based on the actual wire spacing. Furthermore, the symmetrical layout and sliding guide design effectively prevent structural instability during adjustment.

[0045] Through the above technical solution, the present application solves the poor applicability problem caused by the fixed spacing of the running wheels 7 in conventional devices, achieving continuous adjustment of the spacing of the running wheels 7 to meet the detection requirements of wires with different split spacings. The sliding connection structure of the mounting frame 8 ensures smooth adjustment, and the symmetrical layout design improves the structural stability of the device during movement.

[0046] Example 3

[0047] The present application further proposes a chassis structure for a four-split conductor flaw detection device, in which an electric push rod 10 is fixedly installed on the chassis frame 5, and a mounting seat 11 is installed at the power output end of the electric push rod 10. Two rotating rods 12 are provided on the mounting seat 11, and one end of the rotating rod 12 is rotatably connected to the mounting seat 11.

[0048] The electric push rod 10 is a power device that converts electrical energy into linear motion. Specifically, it can be implemented as an electric hydraulic push rod or a servo electric push rod, and is used to provide a linear driving force for adjusting the spacing of the walking wheels 7. The mounting seat 11 is a base that supports the connecting structure of the rotating rod 12. Specifically, it can be implemented as a metal plate with a bearing seat. It is used to convert the linear thrust of the electric push rod 10 into the rotational motion of the rotating rod 12. The rotating rod 12 is a connecting rod component with a rotation function. Specifically, it can be implemented as a metal rod with a rotary joint. It is used to convert the linear displacement of the mounting seat 11 into the symmetrical translational motion of the sliding frame 13.

[0049] Specifically, when the electric push rod 10 is started, its power output end drives the mounting base 11 to move in a straight line, at which point the mounting base 11 drives the two rotating rods 12 to produce synchronous deflection. The rotation angle of the rotating rod 12 corresponds to the stroke of the electric push rod 10. The other end of the rotating rod 12 converts the rotational motion into the lateral displacement of the sliding frame 13 through a rotational connection with the sliding frame 13. This motion transmission process causes the running wheel 7 mounting frame 8 mounted on the sliding frame 13 to produce symmetrical displacement, thereby achieving synchronous adjustment of the spacing between the running wheels 7. By controlling the expansion and contraction of the electric push rod 10, the spacing between the running wheels 7 can be accurately adjusted to match the wires with different line spacings.

[0050] Compared to existing technologies, traditional detection devices use a fixed wheel frame structure that can only accommodate conductors with a single line spacing. This solution transforms linear drive into symmetrical displacement adjustment through a linkage mechanism between an electric push rod 10 and a rotating rod 12. This retains the basic support function of the traditional structure while adding the ability to automatically adjust the spacing of the wheel 7. Compared to existing technologies that manually adjust the wheel spacing, this structure has higher adjustment precision and easier operation.

[0051] Through the above-mentioned technical solution, the present application achieves an electrically adjustable function for the spacing between the running wheels 7, resolving the problem of insufficient wire adaptability caused by the fixed wheel spacing in conventional devices. Through the linear drive of the electric push rod 10 and the rotational linkage of the rotating rod 12, the mounting frame 8 of the running wheels 7 can be precisely and symmetrically displaced according to the wire spacing, improving the compatibility of the flaw detection device with wires of different specifications. This structure significantly enhances the automation level of the flaw detection operation while maintaining the stability of the device.

[0052] The present application further proposes a solution in which two sliding frames 13 are provided on the chassis frame 5 , the two sliding frames 13 are slidably connected to the chassis frame 5 via sliding rails and sliding grooves, and the two sliding frames 13 are symmetrically arranged.

[0053] The sliding frame 13 is a movable frame that supports the mounting function of the running wheels 7. Specifically, it can be implemented using a metal profile with guide grooves. Its sliding path is defined by the matching relationship between the slide rails and the slide grooves. The slide rails and the slide grooves are linear guides composed of rails and grooves, specifically dovetail grooves or T-slots. Mechanical constraints ensure that the sliding frame 13 only moves in a predetermined direction. A symmetrical arrangement means that the two sliding frames 13 are mirror images relative to the central axis of the chassis frame 5. Specifically, they can be equidistantly spaced on either side of the chassis frame 5 to maintain force balance during movement.

[0054] Specifically, the mechanical constraints of the slide rails and chute ensure that the carriages 13 can only translate along the length of the chassis frame 5. An external drive mechanism adjusts the spacing between the two carriages 13, thereby adjusting the wheelbase of the running wheels 7 mounted on them. The symmetrically arranged carriages 13 move synchronously in opposite directions during the adjustment process, ensuring that the center of gravity of the entire device remains aligned with the centerline of the chassis frame 5, thus preventing unbalanced loading caused by unilateral displacement. When the wire spacing changes, the carriages 13 are guided smoothly by the slide rails and chute to the target position and secured by a locking mechanism, ensuring that the spacing between the running wheels 7 precisely matches the spacing between the wires.

[0055] Compared to existing technologies, conventional detection devices use a rigid, fixed connection between the wheel mounting bracket 8 and the chassis, making them unable to adapt to the needs of operating with conductors of varying line spacing. This solution, through the coordination of the slide rails and symmetrical slide frames 13, achieves stepless adjustment of the wheelbase of the wheel 7. The symmetrical sliding mechanism also ensures structural stability during operation, overcoming the limited adaptability and risk of overloading associated with conventional devices due to their fixed wheelbase.

[0056] Through the above technical solution, this application enables the spacing between the walking wheels 7 to be dynamically adjusted according to the actual line spacing of the four-split conductors, solving the technical defect that the traditional device cannot adapt to conductors with different line spacings. At the same time, the symmetrical sliding structure effectively disperses the motion load, thereby improving the walking stability of the device under complex working conditions.

[0057] Example 4

[0058] The present application further proposes that the other ends of the two rotating rods 12 are rotatably connected to the two sliding frames 13 respectively.

[0059] Among them, the rotating rod 12 refers to a rigid rod having two ends respectively connected to the mounting seat 11 and the sliding frame 13 to form a rotatable connection. Specifically, it can be realized by using a metal rod and setting bearings or pin connectors at the ends. Its function is to convert the linear thrust of the electric push rod 10 into the lateral displacement of the sliding frame 13 and transmit power through the rigid rod.

[0060] Among them, the sliding frame 13 refers to a supporting structure that moves laterally along the slide rail of the chassis frame 5. Specifically, it can be implemented by a frame structure 3 with sliders or rollers. Its function is to carry the mounting frame 8 and guide it to move along a predetermined track to ensure the linearity and synchronization of the spacing adjustment of the walking wheels 7.

[0061] Specifically, when the electric push rod 10 drives the mounting seat 11 to produce axial displacement, the rotating rod 12 rotates around the connection point with the mounting seat 11, and the other end of the rotating rod 12 pushes the sliding frame 13 to slide laterally along the slide rail of the chassis frame 5 through the rotational connection with the sliding frame 13. Since the two rotating rods 12 are symmetrically distributed on both sides of the electric push rod 10 and form a rotating pair with the two sliding frames 13 respectively, during the extension and retraction process of the electric push rod 10, the sliding frames 13 on both sides always maintain synchronous reverse movement. This design allows the spacing between the running wheels 7 on both sides to be symmetrically adjusted when the mounting frame 8 moves with the sliding frame 13, thereby adapting to wires with different line spacings. The rotational connection between the rotating rod 12 and the sliding frame 13 can effectively decompose the lateral load, avoid offset or jamming during the movement of the sliding frame 13, and maintain the stability of the moving trajectory of the sliding frame 13 through the rigid support of the rotating rod 12.

[0062] Compared to the existing technology, the spacing between the running wheels 7 and mounting frame 8 of traditional detection devices is fixed, which can only adapt to a single wire spacing. However, the present invention uses a linkage mechanism between the rotating rod 12 and the sliding frame 13 to enable the mounting frame 8 to be symmetrically adjusted according to the changes in the wire spacing. The existing technology uses a rigid fixed connection structure that cannot achieve flexible spacing adjustment and is prone to motion interference during adjustment. However, the present solution achieves stepless adjustment while ensuring structural rigidity through the coordination of the rotating connection and the slide rail.

[0063] Through the above technical solution, the present application can drive the linkage mechanism of the rotating rod 12 and the sliding frame 13 through the electric push rod 10 to realize continuous adjustment of the spacing between the walking wheel 7 and the mounting frame 8, adapting to the detection requirements of wires with different line spacings. At the same time, through the rigid support of the rotating rod 12 and the load decomposition effect of the rotating pair, the stability of the moving trajectory of the mounting frame 8 is maintained during the dynamic adjustment process, avoiding mechanism jamming or structural deformation due to uneven force.

[0064] The present application further proposes that rotating columns 14 are provided at the four corners of the chassis frame 5 , and first connecting pieces 15 are provided on the four rotating columns 14 , and one end of each first connecting piece 15 is rotatably connected to the corresponding rotating column 14 .

[0065] The rotating column 14 is a cylindrical rotating support component provided at the four corners of the chassis frame 5. Specifically, it can be implemented as a metal sleeve with a bearing structure, which is used to provide rotational freedom for the first connecting piece 15. The first connecting piece 15 is a plate-shaped connecting member with an articulated function. Specifically, it can be implemented as a metal plate with a through hole and a pin, which is used to form a rotatable connection between the rotating column 14 and other components.

[0066] Specifically, the rotating columns 14 at the four corners of the chassis frame 5 serve as pivot points, allowing the first connecting piece 15 to rotate 360 ​​degrees around its axis. When the device needs to accommodate four split conductors with varying wire spacing, the rotating pairs formed by the four sets of rotating columns 14 and the first connecting pieces 15 can synchronously adjust the connection angle. Through the symmetrical distribution of the four rotating connection points, as the wire spacing changes, each first connecting piece 15 changes its spatial orientation by rotating around the rotating columns 14, adaptively adjusting the connection angle between the mounting frame 8 and the wires. This rotating connection allows the device to automatically compensate for subtle variations in wire spacing during operation, preventing stagnation caused by structural rigidity.

[0067] Compared to existing technologies, conventional detection devices use fixed connectors at the four corners of the chassis frame 5, which cannot adapt to changes in wire spacing and easily cause the running wheels 7 to derail. This solution provides independently rotating connection structures at the four corners, allowing each connection point to adjust its angle in real time based on the wire spacing, achieving multi-degree-of-freedom dynamic adjustment while maintaining overall structural symmetry.

[0068] Through the above technical solution, the present application solves the problem of instability in the cooperation between the walking wheel 7 and the conductor caused by the fixed chassis structure of the traditional device. Through four sets of independently rotatable connection structures, the device realizes the adaptive adjustment ability of conductors with different line spacings, so that the flaw detection device maintains a stable moving state in a complex conductor arrangement environment.

[0069] Example 5

[0070] The present application further proposes that a second connecting piece 16 is provided at both ends of each sliding frame 13, the middle position of each second connecting piece 16 is rotatably connected to the sliding frame 13, and the other end of each first connecting piece 15 is rotatably connected to one end of each second connecting piece 16.

[0071] The second connecting piece 16 is a plate-like member mounted at each end of the sliding frame 13 to form a linkage structure. Specifically, it can be implemented as a metal plate with an axial hole, with a central pivot connection forming a fulcrum-like structure. A pivot connection refers to a mechanical connection that allows components to rotate about a fixed axis. Specifically, it can be implemented using a hinge or bearing structure, creating a displacement compensation mechanism during the movement of the sliding frame 13. The linkage connection between the first connecting piece 15 and the second connecting piece 16 is a mechanical transmission relationship established by a revolute pair. Specifically, it can be implemented using a pin-and-shaft coupling, forming the basic component of a spatial four-bar linkage.

[0072] Specifically, when the detection device moves along the wire, the sliding frame 13 produces a lateral displacement according to the change in the wire spacing. The second connecting piece 16 forms a lever effect through the middle rotating fulcrum, and one end thereof moves with the sliding frame 13 to drive the other end to produce a reverse displacement. The first connecting piece 15 transmits the rotational motion of the rotating column 14 on the chassis frame 5 to the second connecting piece 16, forming a coordinated motion of multiple rotation nodes. When the wire spacing changes, the relative displacement of the two ends of the second connecting piece 16 absorbs the structural deformation through the rotation connection. At the same time, the linkage relationship between the first connecting piece 15 and the second connecting piece 16 couples the motion state of the chassis frame 5 and the sliding frame 13 in real time, ensuring that the contact pressure between the walking wheel 7 and the wire remains evenly distributed. The multi-degree-of-freedom design of the rotational connection enables each component to avoid motion interference caused by rigid constraints during the adjustment process.

[0073] Compared to existing technologies, traditional detection devices use fixed connection structures, which can easily cause contact failure between the walking wheel 7 and the wires or generate stress concentration when the wire spacing changes. This application constructs a multi-stage linkage mechanism with a rotating connection, converting the displacement change of the sliding frame 13 into the rotational movement of the second connecting piece 16, and achieving displacement compensation using the principle of leverage. In existing technologies, connecting pieces are mostly single fixed connections that cannot adapt to dynamic deformation. However, this solution achieves flexible adjustment while maintaining structural rigidity through the combination of a central rotating fulcrum and a linkage connection.

[0074] Through the above technical solution, the present application can automatically adjust the spacing of the running wheels 7 of the detection device according to the changes in the spacing between the wires, preventing the running wheels 7 from losing contact with the wires or generating excessive lateral pressure. The lever effect of the rotating connection effectively disperses structural stress and prevents components from breaking due to excessive deformation. The multi-stage linkage mechanism ensures the synchronization of the movement of the chassis frame 5 and the sliding frame 13, maintaining the overall stability of the device under complex working conditions. The middle rotation design of the second connecting piece 16 eliminates motion interference and ensures the smoothness of the adjustment process.

[0075] The present application further proposes that a steering column 17 is provided on the mounting frame 8, and a third connecting piece 18 is rotatably provided on the steering column 17, one end of the third connecting piece 18 is rotatably connected to the steering column 17, and the other end of the third connecting piece 18 is respectively connected to the other end of each second connecting piece 16.

[0076] The steering column 17 is a columnar structure mounted on the mounting frame 8, specifically a cylindrical metal shaft, which serves as a pivot point. The third connecting piece 18 is a connecting rod structure with pivot joints at both ends, specifically stamped from a flat metal plate, which is used to transmit motion between the steering column 17 and the second connecting piece 16. The steering column 17 provides rotational freedom for the mounting frame 8 through its pivoting connection, allowing the angular change of the running wheel 7 and the mounting frame 8 during lateral sliding. The third connecting piece 18 converts the displacement of the mounting frame 8 into lateral movement of the sliding frame 13, while simultaneously releasing the motion direction constraint through the pivoting pair.

[0077] Specifically, the steering column 17 is fixed to the mounting frame 8. One end of the third connecting piece 18 forms a revolute pair with the steering column 17, and the other end forms a revolute pair with the end of the second connecting piece 16. When the electric push rod 10 drives the mounting frame 8 to slide laterally, the steering column 17 moves with the mounting frame 8. The third connecting piece 18 transmits this displacement to the second connecting piece 16, forcing the sliding frame 13 to move laterally along the slide rail. The rotational freedom of the steering column 17 allows the relative angle between the mounting frame 8 and the sliding frame 13 to change. The linkage between the third connecting piece 18 and the second connecting piece 16 forms a four-bar linkage, which synchronizes the posture of the flaw detector 31 with the adjustment of the spacing between the running wheels 7.

[0078] Compared to existing technologies, traditional inspection devices use a fixed travel wheel 7 bracket, which only allows for adjustment of line spacing through a rigid structure and lacks angle adaptation. This solution, through the rotational connection between the steering column 17 and the third connecting plate 18, forms a deformable four-bar linkage. This automatically adjusts the angle of the flaw detector 31 when adjusting the line spacing, eliminating the need for an additional drive device. While traditional solutions require independent adjustment of the travel wheel 7 spacing and the flaw detector 31 angle, this solution achieves synchronized control through mechanical linkage.

[0079] Through the above technical solution, the present application enables the walking wheel 7 mounting frame 8 to synchronously drive the sliding frame 13 to move horizontally and change the posture of the flaw detector 31 when sliding horizontally to adjust the line spacing, thereby solving the problem that the fixed-spacing walking wheel 7 cannot adapt to different wire spacings; the four-bar linkage converts the line spacing change into the angle adjustment of the flaw detector 31, eliminating the need for manual repeated angle correction. An imaging plate is provided on the device, and a laser is emitted through the flaw detector 31. The laser forms an x-image on the imaging plate through the wire and is transmitted to the ground.

[0080] Example 6

[0081] The present application further proposes that the angle adjustment structure includes a first adjuster for realizing upper and lower angle adjustment and a second adjuster for realizing left and right angle adjustment; the first adjuster includes a first mounting plate 19 fixedly connected to the telescopic rod 4, and a first slot with a first transverse axis 21 is provided on the first mounting plate 19. The two ends of the first transverse axis 21 are rotatably connected to the first mounting plate 19 and a first gear 22 is fixedly provided. The first mounting plate 19 is fixedly installed with a first hydraulic rod 20 with a power output end, and the power output end is fixedly connected to a first rack 23 meshing with the first gear 22. The first mounting plate 19 is provided with a first limit bar 29 slidably connected to the first rack 23; the second adjuster includes a second transverse axis 24 fixedly connected to the first transverse axis 21, the second transverse axis 24 is rotatably connected to the second mounting plate 30 and a second gear 27 is fixedly installed. The second mounting plate 30 is fixedly installed with a second hydraulic rod 26 with a power output end, and the power output end is fixedly connected to the second rack 25 meshing with the second gear 27. The second mounting plate 30 is provided with a second limit bar 28 slidably connected to the second rack 25.

[0082] Among them, the first slot refers to a strip groove structure opened on the first mounting plate 19, which can be implemented by a rectangular or U-shaped groove body, and is used to limit the rotation path of the first horizontal axis 21 and constrain its rotation angle range. The first limit bar 29 refers to a guide rail structure parallel to the movement direction of the rack, which can be implemented by a T-shaped or dovetail groove track, and limits the lateral displacement of the rack by sliding with the side of the rack. The second horizontal axis 24 refers to a cylindrical rotating shaft extending perpendicular to the first horizontal axis 21, which can be implemented by a stepped shaft structure, and is used to transmit the angle adjustment reference and form a secondary adjustment fulcrum. The second mounting plate 30 refers to the mounting base that supports the flaw detector 31, which can be implemented by a plate-like structure with a flange, and the horizontal angle adjustment is achieved through the rotation connection of the second horizontal axis 24.

[0083] Specifically, vertical angle adjustment is achieved through the first adjuster: the first hydraulic rod 20 drives the first rack 23 to move linearly along the first limit bar 29, driving the meshed first gear 22 to rotate, forcing the first transverse axis 21 fixed to the center of the gear to rotate within the angular range defined by the first slot, thereby changing the overall pitch angle of the second adjuster. Left-right angle adjustment is achieved through the second adjuster: the second hydraulic rod 26 drives the second rack 25 to move along the second limit bar 28, driving the meshed second gear 27 to rotate, causing the second mounting plate 30 to rotate about the second transverse axis 24, thereby adjusting the horizontal deflection angle of the flaw detector 31. The two-stage adjustment mechanism achieves compound spatial angle adjustment capability through the vertical fixed connection between the first transverse axis 21 and the second transverse axis 24. The first and second limit bars 29 and 28 respectively constrain the linear motion trajectory of the rack, ensuring the accuracy of the rack and gear meshing.

[0084] Compared with existing technologies, traditional four-split conductor flaw detection devices typically use an integrated rotary table or a single hydraulic cylinder to directly push and pull the flaw detector 31, resulting in a single adjustment dimension and low angle control accuracy. This application uses a split gear rack transmission mechanism to decompose the vertical and left-right angle adjustments into independent control dimensions. The vertical connection structure between the first horizontal axis 21 and the second horizontal axis 24 achieves mechanical decoupling of angle adjustment. The sliding fit between the limit bar and the rack effectively eliminates the deflection torque caused by the traditional push rod direct drive, allowing the flaw detector 31 to accurately adapt to the spatial orientation of conductors with different line spacings.

[0085] Through the above technical solution, the present application realizes independent control of the angles of the flaw detector 31 in the vertical and horizontal directions, accurately adjusts the rotation angle through the gear rack transmission ratio, and the sliding fit between the limit bar and the rack eliminates the positioning error caused by the transmission gap, so that the flaw detector 31 can stably maintain the set angle, ensure the vertical projection relationship between the X-ray detection ray and the defective part of the wire, and improve the flaw detection accuracy of wires with different line spacings.

[0086] The present application further proposes an angle adjustment structure for a four-split conductor flaw detection device, including a second horizontal axis 24 fixedly connected to the first horizontal axis 21, a second mounting plate 30 rotatably connected to the second horizontal axis 24, a second gear 27 fixedly mounted on the second horizontal axis 24, a second hydraulic rod 26 fixedly mounted on the second mounting plate 30, a second rack 25 fixedly connected to the power output end of the second hydraulic rod 26, the second rack 25 and the second gear 27 are meshed, a second limiting bar 28 is provided on the second mounting frame 8 for preventing the second rack 25 and the second gear 27 from offsetting, the second limiting bar 28 is slidably connected to the second rack 25, and a flaw detector 31 is provided on the second mounting plate 30.

[0087] Among them, the second horizontal axis 24 refers to a horizontal rotating axis that forms a mechanical linkage with the first regulator, and can be specifically implemented by a steel rotating shaft with a keyway, which is used to transmit the rotational motion of the second regulator. The second gear 27 refers to a transmission component with a toothed structure, which can be specifically implemented by a helical gear or a spur gear, and is used to convert the linear motion of the second rack 25 into rotational motion. The second limit bar 28 refers to a metal bar with a guide groove, which can be specifically implemented by an aluminum alloy profile with a T-shaped cross-section, and is used to constrain the motion trajectory of the second rack 25. The second mounting plate 30 refers to a rigid flat plate that supports the flaw detector 31, and can be specifically implemented by an aviation aluminum plate with weight-reducing holes, and is used to achieve directional installation of the flaw detector 31.

[0088] Specifically, when the power output of the second hydraulic rod 26 pushes the second rack 25 to move linearly, the meshing action of the second rack 25 and the second gear 27 causes the second gear 27 to rotate the second transverse shaft 24, thereby causing the second mounting plate 30 to rotate about the axis of the second transverse shaft 24. During this process, the sliding connection between the second limit bar 28 and the second rack 25 limits the displacement of the second rack 25 perpendicular to the direction of motion, thereby preventing the gear and rack from disengaging. The flaw detector 31 rotates synchronously with the second mounting plate 30, enabling left-right angle adjustment, allowing the flaw detector 31 to adapt to four-split conductors with different line spacings.

[0089] Compared to existing technologies, traditional left-right angle adjustment mechanisms typically use a single drive source to control multi-directional movement, resulting in limited adjustment precision. Furthermore, the rack-and-pinion transmission lacks an anti-drift mechanism, making it prone to transmission failure. This solution utilizes an independent second adjuster for dedicated left-right angle adjustment. Combined with the sliding limit function of the second limit bar 28, this solution addresses the issue of limited precision in multi-directional linkage adjustment while ensuring the stability of the rack-and-pinion transmission.

[0090] Through the above technical solution, the present application realizes independent angle adjustment of the flaw detector 31 in the left and right directions, ensures the meshing accuracy of the rack and the gear, avoids detection errors caused by mechanical transmission inaccuracy, and enables the flaw detector 31 to accurately align with wires with different line spacings, thereby improving the adaptability of the detection device to different working conditions.

[0091] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0092] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one 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 application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for detecting four-split conductors, characterized in that: The invention comprises a housing (1), a hook (2) mounted on the housing (1) and used for connecting to a drone, a chassis structure mounted on the housing (1), a frame structure (3) connected to the housing (1), an angle adjustment structure connected to the chassis structure, and a flaw detector (31) mounted on the angle adjustment structure; the angle adjustment structure is fixed to the chassis structure via a telescopic rod (4).

2. A four-split conductor flaw detection device according to claim 1, characterized in that: The chassis structure comprises a chassis frame (5), the chassis frame (5) being fixed to the housing (1) via a column (6), and two mounting frames (8) for mounting running wheels (7) being provided on the chassis frame (5), the two mounting frames (8) being symmetrically arranged, the two mounting frames (8) being located on both sides of the chassis frame (5), and each mounting frame (8) being mounted with a wheel axle (9) for mounting the running wheel (7), and each mounting frame (8) being slidably connected to the chassis frame (5) via the wheel axle (9).

3. A four-split conductor flaw detection device according to claim 2, characterized in that: An electric push rod (10) is fixedly mounted on the chassis frame (5), a mounting seat (11) is mounted on the power output end of the electric push rod (10), two rotating rods (12) are arranged on the mounting seat (11), and one end of the two rotating rods (12) is rotatably connected to the mounting seat (11).

4. A four-split conductor flaw detection device according to claim 2, characterized in that: Two sliding frames (13) are provided on the chassis frame (5). The two sliding frames (13) are slidably connected to the chassis frame (5) via a slide rail slot. The two sliding frames (13) are symmetrically arranged.

5. A four-split conductor flaw detection device according to claim 4, characterized in that: The other ends of the two rotating rods (12) are rotatably connected to the two sliding frames (13) respectively.

6. A four-split conductor flaw detection device according to claim 1, characterized in that: Rotating columns (14) are provided at the four corners of the chassis frame (5), and first connecting pieces (15) are provided on the four rotating columns (14). One end of each of the first connecting pieces (15) is rotatably connected to each of the rotating columns (14).

7. A four-split conductor flaw detection device according to claim 1, characterized in that: A second connecting piece (16) is provided at both ends of each sliding frame (13), and the middle position of each second connecting piece (16) is rotatably connected to the sliding frame (13), and the end of each first connecting piece (15) away from the rotating column (14) is rotatably connected to one end of each second connecting piece (16).

8. The device for detecting four-split conductors according to claim 1, characterized in that: Steering columns (17) are provided at the four corners of each mounting frame (8), and a third connecting piece (18) is rotatably provided on each steering column (17). One end of each third connecting piece (18) is rotatably connected to each steering column (17), and one end of each third connecting piece (18) away from the steering column (17) is connected to one end of each second connecting piece (16).

9. The device for detecting four-split conductors according to claim 1, characterized in that: The angle adjustment structure comprises a first adjuster for realizing vertical angle adjustment and a second adjuster for realizing horizontal angle adjustment; the first adjuster comprises a first mounting plate (19) fixedly connected to the telescopic rod (4); a first slot is provided on the first mounting plate (19); a first transverse axis (21) is provided on the first slot; both ends of the first transverse axis (21) are rotatably connected to the first mounting plate (19); a first gear (22) is fixedly provided on the first transverse axis (21); a first hydraulic rod (20) is fixedly installed on the first mounting plate (19); a first rack (23) adapted to the first gear (22) is fixedly connected to the power output end of the first hydraulic rod (20); the first gear (22) is meshed with the first rack (23); a first limiting bar (29) is provided on the first mounting plate (19) for preventing the first rack (23) from deviating from the first gear (22); the first limiting bar (29) is slidably connected to the first rack (23).

10. A four-split conductor flaw detection device according to claim 9, characterized in that: The second regulator includes a second transverse shaft (24) fixedly connected to the first transverse shaft (21), a second mounting plate (30) rotatably connected to the second transverse shaft (24), a second gear (27) fixedly mounted on the second transverse shaft (24), a second hydraulic rod (26) fixedly mounted on the second mounting plate (30), a second rack (25) fixedly connected to the power output end of the second hydraulic rod (26), the second rack (25) and the second gear (27) meshing with each other, a second limiting bar (28) for preventing the second rack (25) and the second gear (27) from offsetting each other is provided on the second mounting frame (8), the second limiting bar (28) and the second rack (25) are slidably connected, and the flaw detector (31) is mounted on the second mounting plate (30).

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