Electrified flaw detection device for multi-split power transmission line

Abstract

The invention relates to the technical field of nondestructive testing, and discloses an electrified flaw detection device for a multi-split power transmission line, which comprises a bearing assembly and a flaw detection assembly, the imaging piece and the X-ray machine are respectively rotated to be vertically placed so as to adapt to a narrow gap between adjacent power transmission lines in the hanging process, and when X-ray detection is carried out, the bearing frame is lifted through the lifting mechanism, the imaging piece is rotated through the turnover mechanism, the X-ray machine is rotated through the regulation and control mechanism, and the imaging piece extends or contracts, so that the X-ray detection is carried out. The X-ray detection of the power transmission line mounted in the power transmission line on one side in parallel, the power transmission line below the mounting and the power transmission line on the outer side of the mounting can be realized, so that the X-ray detection of the lead of the power transmission line on one side in parallel can be realized by single mounting, namely the X-ray detection work of the multi-split lead can be completed by two mounting. Compared with an existing detection device which can only realize single detection through single-time hanging, the detection efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of non-destructive testing, in particular to a live flaw detection device for a multi-bundled transmission line. BACKGROUND

[0002] High-voltage overhead lines are the core channel for long-distance power transmission, with high operating voltage and large current intensity. In daily use of the power grid, crimped fittings need to carry load current as a conductive path, and they are usually permanently fixed on the transmission line after installation. However, in the actual operation of the power grid, power grid failures caused by non-standard crimping process of key parts such as strain clamps and jointing tubes are common. In recent years, X-ray digital imaging technology has been introduced to detect the crimping quality of fittings in transmission lines, which can quickly and finely identify structural defects of strain clamps, jointing tubes, drainage plates and conductors, and has become an important means to ensure the safe operation of the power grid.

[0003] However, in high-voltage overhead lines, phase-split conductors are used to reduce corona loss and corona interference, i.e., two or more conductors are used for each phase. The use of split conductors can transmit larger amounts of power with less power loss and better anti-vibration performance. Existing transmission lines usually use six-bundled or eight-bundled transmission lines. Taking the widely used six-bundled transmission line as an example, the spacing between the six-bundled sub-conductors is usually less than 400 mm, and the outer layer is often surrounded by spacer rods and anti-fog layers. Traditional handheld probes or mechanical arms cannot be inserted, so the X-ray machine must use a smaller target distance and a narrower fan-shaped beam to avoid obstruction and artifacts between adjacent sub-conductors.

[0004] To realize flaw detection of multi-bundled conductors, a patent document with publication number CN112945990A discloses a live visual X-ray detection device for multi-bundled transmission lines, which can ensure the clarity and accuracy of imaging through a relatively fixed X-ray machine and a detector. Although it can realize X-ray detection in a live state, its operation logic is "single - single shift", which means that the device must go through a complete cycle of "unhooking - suspending - manually pushing the rod on the tower - re-hanging the line" for each sub-conductor imaging. This means that when detecting six-bundled conductors, the same disassembly and assembly process must be performed six times, and the tower personnel and ground rope personnel must adjust their positions six times, resulting in linear addition of time and physical cost. The device can only cover a single sub-conductor at a time, and cannot take advantage of the geometric characteristics of parallel arrangement of six-bundled conductors to realize "one-time installation and multi-conductor scanning", resulting in low overall detection efficiency. SUMMARY

[0005] The present application aims to provide a kind of live flaw detection device for multi-split transmission line, solve the problem of low overall detection efficiency caused by the fact that existing X-ray detection flaw detection device can only detect one wire at a time.

[0006] To achieve the above object, the present application provides a kind of live flaw detection device for multi-split transmission line, which includes bearing assembly and flaw detection assembly; The bearing assembly includes extension frame, the extension frame is vertically extended and is provided with installation cavity, the installation cavity is through the extension frame and is vertically arranged on the two side surfaces of the transmission line in the horizontal plane;The extension frame is provided with a hanging position for hanging the extension frame to the transmission line on both sides in the direction parallel to the transmission line; The flaw detection assembly includes imaging element, X-ray machine, bearing frame, lifting mechanism, turnover mechanism and control mechanism;The lifting mechanism and bearing frame are sequentially arranged in the installation cavity from top to bottom, the lifting mechanism is fixedly connected to the extension frame, and the bearing frame is vertically arranged and is movably connected to the extension frame in the vertical direction;The output end of the lifting mechanism is connected to the bearing frame for lifting or lowering the bearing frame; The bearing frame is provided with flaw detection cavity, and the flaw detection cavity is through the bearing frame and is vertically arranged on the two side surfaces of the transmission line in the horizontal plane;The imaging element and X-ray machine are sequentially arranged in the flaw detection cavity from top to bottom, and the X-ray machine is rotatably connected to the bearing frame by the control mechanism;The imaging element is rotatably connected to the bearing frame by the turnover mechanism, and the imaging element can be extended or contracted to block the ray path of the X-ray machine.

[0007] Further, the imaging element includes bearing shell, outer extension shell and telescopic structure; The bearing shell is rotatably connected to the bearing frame by the turnover mechanism;The bearing shell is hollow, and an outer extension opening is formed in the side surface perpendicular to the transmission line, and the outer extension shell is slidably arranged in the bearing shell through the outer extension opening;The side surface opposite to the X-ray machine of the bearing shell and the outer extension shell is embedded with imaging plate for blocking the ray path of the X-ray machine; The telescopic structure is arranged on one side surface of the bearing shell and connected with the outer extension shell, and the telescopic structure is used for driving the outer extension shell away from or embedded in the bearing shell, so that the imaging element is extended or contracted.

[0008] Further, the telescopic structure includes nut block, adjusting screw, adjusting motor and fixed block; The bearing shell is provided with moving groove, the moving groove is extended and arranged along the direction of relative movement between the outer extension shell and the bearing shell, and penetrates the inner and outer surfaces of the bearing shell; The adjusting motor and the fixed block are respectively arranged at two ends of the extension direction of the moving groove, one end of the adjusting screw is rotationally connected to the fixed block, and the other end is fixedly connected to the output end of the adjusting motor; the nut block is movably inserted into the moving groove, one end of the nut block is sleeved on the outer periphery of the adjusting screw and is screwed with the adjusting screw, and the other end is fixedly connected to the epitaxial shell.

[0009] Further, the regulating mechanism comprises a connecting structure and a regulating structure; The connecting structure comprises a connecting rod and a connecting hoop; the connecting rod extends along the direction parallel to the power transmission line and is fixedly arranged in the flaw detection cavity; the X-ray machine is fixedly arranged with the connecting hoop at the bottom of the surface opposite to the connecting rod, and the connecting hoop is rotationally arranged on the outer periphery of the connecting rod, so that the X-ray machine is rotationally connected with the connecting rod; The regulating structure comprises a follow-up motor, a crank and a sliding frame; the top of the X-ray machine is fixedly arranged with the sliding frame, the sliding frame is provided with a sliding channel, the sliding channel penetrates through the two side surfaces of the sliding frame in the direction parallel to the power transmission line; the crank penetrates through the sliding channel; two follow-up motors are oppositely arranged along the direction parallel to the power transmission line and are fixedly arranged above the X-ray machine, and the two ends of the crank are fixedly connected with the output shafts of the two follow-up motors, so that the crank rotates in the direction parallel to the power transmission line.

[0010] Further, the extension frame comprises a bearing table and an extension rod; The bearing table is horizontally arranged, and the two extension rods are fixedly arranged at the bottom of the bearing table in the direction parallel to the power transmission line and vertically downwardly extend; The lower surface of the bearing table and the side surface opposite to the two extension rods jointly define the mounting cavity; The two side surfaces of the bearing frame in the direction parallel to the power transmission line are fixedly arranged with at least two groups of sliding wheels; The at least two groups of sliding wheels are arranged in the vertical direction, each group of sliding wheels comprises two sliding wheels arranged at intervals, and the two sliding wheels define a clamping cavity for clamping the extension rod.

[0011] Further, the turnover mechanism comprises a turnover head and a turnover motor; The turnover motor is fixedly arranged on the side surface of the bearing frame away from the flaw detection cavity; the two side surfaces of the imaging member in the direction parallel to the power transmission line are fixedly arranged with the turnover heads; the turnover heads penetrate through the bearing frame, and at least one of the turnover heads penetrates through the bearing frame and is fixedly connected with the output end of the turnover motor.

[0012] Further, the walking assembly comprises a walking wheel, a power mechanism and a walking frame; The walking frame is provided with the walking frame on both side surfaces in the direction parallel to the power transmission line; The walking frame is provided with a walking channel penetrating the upper and lower surfaces thereof, and the walking wheel is rotationally connected to the walking frame through the power mechanism; The walking wheel is provided with a walking groove for contacting the power transmission line, and the walking groove is annularly arranged along the circumferential direction of the walking wheel, and the groove surface of the walking groove defines the hanging position.

[0013] Further, the walking assembly further comprises an anti-falling roller and a driving mechanism; The anti-falling roller is connected to the extension frame through the driving mechanism and is arranged below the walking wheel; The driving mechanism is used for switching the anti-falling roller between the anti-falling state and the non-anti-falling state; When the anti-falling roller is in the anti-falling state, the anti-falling roller is horizontally arranged and located directly below the walking wheel, and a gap for the power transmission line to pass through is formed between the anti-falling roller and the walking wheel; When the anti-falling roller is in the non-anti-falling state, the anti-falling roller is vertically arranged and located below the walking wheel.

[0014] Further, the carrying assembly further comprises a supporting rod and a roller mechanism; The supporting rod is arranged in the direction parallel to the power transmission line and is fixedly arranged at the bottom of the mounting cavity; The supporting rod is provided with at least one roller mechanism, and the roller mechanism has a roller whose axial direction is perpendicular to the supporting rod.

[0015] Further, the carrying assembly further comprises a hook, and the hook is fixedly arranged at the top of the extension frame; The hook comprises a straight rod and a V-shaped rod; Two straight rods are vertically arranged in the direction parallel to the power transmission line and are fixedly connected to the extension frame; The two ends of the V-shaped rod are respectively fixedly connected to the upper ends of the two straight rods; The included angle between the plane of the V-shaped rod and the planes of the two straight rods is 30°-45°.

[0016] Compared with the prior art, the device for live detection of defects of a multi-split power transmission line has the following beneficial effects: The application provides a kind of for the charged flaw detection device of multi-bundled transmission line, it includes bearing assembly and flaw detection component;The charged flaw detection device for the multi-bundled transmission line is lifted after the assistance of unmanned aerial vehicle or other hang equipment, and is hung in one of the transmission line in multi-bundled line by the hang position;And in the process of hanging, imaging piece and X-ray machine are respectively turned to vertical placement by the turnover mechanism and the control mechanism to adapt to the narrow gap between adjacent transmission line to smoothly carry out hanging.In the process of X-ray detection, the transmission line of hanging is located between imaging piece and X-ray machine by rotating the X-ray machine by the control mechanism, and rotating the imaging piece by the turnover mechanism, so as to carry out X-ray detection of the transmission line of hanging;The transmission line below hanging is located between imaging piece and X-ray machine by lowering the bearing frame by lifting mechanism, to carry out X-ray detection of the transmission line below hanging;The transmission line outside hanging is located between imaging piece and X-ray machine by raising the bearing frame by lifting mechanism, rotating the imaging piece and X-ray machine by turnover mechanism and control mechanism respectively, and extending the imaging piece itself, to carry out X-ray detection of the transmission line outside hanging;Thus, X-ray detection of parallel side transmission line is realized by single hanging, i.e.two times of hanging can complete X-ray detection of multi-bundled conductor, compared with the detection device of the prior art that can only realize single detection by single hanging, the detection efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a kind of for the charged flaw detection device of multi-bundled transmission line of the embodiment of the application, and it is a perspective structural schematic diagram; Figure 2 It is a kind of for the charged flaw detection device of multi-bundled transmission line of the embodiment of the application, and it is a front view schematic diagram; Figure 3 It is a kind of for the charged flaw detection device of multi-bundled transmission line of the embodiment of the application, and it is a perspective structural schematic diagram of imaging piece; Figure 4 It is a kind of for the charged flaw detection device of multi-bundled transmission line of the embodiment of the application, and it is a perspective structural schematic diagram of flaw detection component; Figure 5 It is a kind of for the charged flaw detection device of multi-bundled transmission line of the embodiment of the application, and it is a side view schematic diagram of walking component; Figure 6 It is a kind of for the charged flaw detection device of multi-bundled transmission line of the embodiment of the application, and it is a perspective structural schematic diagram of bearing assembly; Figure 7 It is a kind of for the charged flaw detection device of multi-bundled transmission line of the embodiment of the application, and it is a side view schematic diagram of roller mechanism; Figure 8This is a front view schematic diagram of a live-line flaw detection device (without protective frame) for multi-split transmission lines according to an embodiment of the present invention; Figure 9 This is a side view schematic diagram of a live-line flaw detection device for multi-split transmission lines, as described in an embodiment of the present invention, mounted on a transmission line.

[0018] In the figure, 100, live-line flaw detection device for multi-split transmission lines; 1, bearing assembly; 11, extension frame; 110, mounting cavity; 111, bearing platform; 112, extension rod; 113, extension plate; 12, hook; 121, straight rod; 122, V-shaped rod; 14, protective frame; 15, support rod; 16, roller mechanism; 161, roller; 162, roller frame; 1621, back plate; 1622, clamp frame; 1623, rotating shaft; 163, assembly head; 1631, C-shaped clamp; 1632, fastening bolt; 2, walking assembly; 21, walking wheel; 22, power mechanism; 23, walking frame; 24, anti-derailment roller; 25, drive mechanism; 3, flaw detection assembly; 31, imaging element; 311, bearing shell; 3 10. Outer opening; 3110. Moving groove; 312. Outer shell; 313. Nut block; 314. Adjusting screw; 315. Adjusting motor; 316. Fixing block; 32. X-ray machine; 33. Bearing frame; 330. Flaw detection chamber; 331. Side frame; 3311. Side plate; 3312. Side rod; 3313. Sliding wheel; 332. Cross frame; 34. Lifting mechanism; 341. Winch; 342. Lifting rope; 35. Tilting mechanism; 351. Tilting head; 352. Tilting motor; 36. Control mechanism; 361. Connecting structure; 3611. Connecting rod; 3612. Connecting clamp; 362. Control mechanism; 3621. T-pipe; 3622. Follow-up motor; 3623. Crank; 3624. Slide. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] like Figures 1-9 As shown, an embodiment of the present invention provides a live-line flaw detection device 100 for multi-split transmission lines, which includes a carrier component 1 and a flaw detection component 3. The supporting component 1 includes an extension frame 11, which extends vertically and has an installation cavity 110. The installation cavity 110 penetrates the two sides of the extension frame 11 on the horizontal plane that are perpendicular to the transmission line. The extension frame 11 has mounting positions on both sides in the direction parallel to the transmission line for mounting the extension frame 11 to the transmission line. The flaw detection assembly 3 comprises an imaging member 31, an X-ray machine 32, a bearing frame 33, a lifting mechanism, a turnover mechanism 35 and a control mechanism 36; the lifting mechanism and the bearing frame 33 are sequentially arranged in the installation cavity 110 from top to bottom, The lifting mechanism is connected to the extension frame 11 and connected to the bearing frame 33, and is used for lifting or lowering the bearing frame 33; the lifting mechanism is fixedly connected to the extension frame 11, and the bearing frame 33 is vertically arranged and slidably connected to the extension frame 11 in the vertical direction; the output end of the lifting mechanism is connected to the bearing frame 33, and is used for lifting or lowering the bearing frame 33; The bearing frame 33 is provided with a flaw detection cavity 330, the flaw detection cavity 330 penetrates through the two side surfaces of the bearing frame 33 which are perpendicular to the power transmission line in the horizontal plane; the imaging member 31 and the X-ray machine 32 are sequentially arranged in the flaw detection cavity 330 from top to bottom, and the X-ray machine 32 is rotationally connected to the bearing frame 33 through the control mechanism 36; the imaging member 31 is rotationally connected to the bearing frame 33 through the turnover mechanism 35, and the imaging member 31 can be elongated or contracted to block the ray path of the X-ray machine 32.

[0021] Based on the above technical scheme, the live flaw detection device 100 for multi-split power transmission lines is hung on one of the power transmission lines in the multi-split line after being lifted by the unmanned aerial vehicle or other hanging equipment; and during the hanging process, the imaging member 31 and the X-ray machine are respectively turned over to be vertically placed by the turnover mechanism 35 and the control mechanism 36 to adapt to the narrow gap between the adjacent power transmission lines to smoothly carry out the hanging. During X-ray detection, the X-ray machine 32 is rotated by the control mechanism 36, the imaging member 31 is rotated by the turnover mechanism 35, the hung power transmission line is located between the imaging member 31 and the X-ray machine 32, so that the X-ray detection of the hung power transmission line is carried out; the bearing frame 33 is lowered by the lifting mechanism, so that the power transmission line below the hanging is located between the imaging member 31 and the X-ray machine 32, so that the X-ray detection of the power transmission line below the hanging is carried out; the bearing frame 33 is raised by the lifting mechanism, the imaging member 31 and the X-ray machine 32 are respectively rotated by the turnover mechanism 35 and the control mechanism 36, and the imaging member 31 is elongated by itself, so that the power transmission line outside the hanging is located between the imaging member 31 and the X-ray machine 32, so that the X-ray detection of the power transmission line outside the hanging is carried out; thus, the X-ray detection of the power transmission line on one side of the parallel power transmission lines is realized by single hanging, and the X-ray detection of the multi-split conductor is completed by twice hanging, compared with the detection device of the prior art which can only realize single detection by single hanging, the detection efficiency is greatly improved.

[0022] For the convenience of describing the structure of the charged flaw detection device 100 for multi-split transmission line, the direction in which the transmission line extends is defined as the first direction X.

[0023] Further, as shown in Figures 1-3 To specifically realize the elongation or contraction of the imaging member 31, the imaging member 31 comprises a bearing shell 311, an extension shell 312 and a telescopic structure. The bearing shell 311 is rotationally connected to the bearing frame 33 by the turnover mechanism 35. The bearing shell 311 is hollow and has an extension opening 310 on the side surface perpendicular to the transmission line. The extension shell 312 is slidably arranged in the bearing shell 311 through the extension opening 310. The side surface of the bearing shell 311 and the extension shell 312 opposite to the X-ray machine 32 is embedded with an imaging plate for shielding the ray path of the X-ray machine. The telescopic structure is arranged on the side surface of the bearing shell 311 and connected to the extension shell 312. The telescopic structure is used to drive the extension shell 312 to move away from or embed into the bearing shell 311, so as to elongate or contract the imaging member 31.

[0024] For the convenience of understanding, it is defined that when the bearing shell 311 is turned to the horizontal state, the upper surface thereof has a second direction Y perpendicular to the first direction X. That is, the extension opening 310 is arranged on the side surface of the bearing shell 311 in the second direction Y. When the extension shell 312 slides in the bearing shell 311, it relatively approaches or moves away from the hanging transmission line in the direction perpendicular to the transmission line, so that the extension shell 312 can be moved above the transmission line outside the hanging, and the imaging plate embedded on the side surface thereof opposite to the X-ray machine 32 can shield the ray path of the X-ray machine, so as to realize X-ray flaw detection imaging.

[0025] Further, as shown in Figure 3 To specifically realize the driving of the telescopic structure to the extension shell 312, the telescopic structure comprises a nut block 313, an adjusting screw 314, an adjusting motor 315 and a fixed block 316. The bearing shell 311 is provided with a moving groove 3110 extending along the direction in which the extension shell 312 moves relative to the bearing shell 311 and penetrating through the inner and outer surfaces of the bearing shell 311. The adjusting motor 315 and the fixed block 316 are respectively fixed at two ends of the extension direction of the moving groove 3110, one end of the adjusting screw 314 is rotationally connected to the fixed block 316, and the other end is fixedly connected to the output end of the adjusting motor 315; the nut block 313 is movably inserted into the moving groove 3110, one end of the nut block 313 is sleeved on the outer periphery of the adjusting screw 314 and is screwed with the adjusting screw 314, and the other end is fixedly connected to the epitaxial shell 312.

[0026] It can be understood that the direction of relative movement of the epitaxial shell 312 and the bearing shell 311 is the second direction Y defined above, and the moving groove 3110 is arranged along the second direction Y; by fixing the adjusting motor 315 and the fixed block 316 at two ends of the moving groove 3110 in the second direction Y, and rotationally connecting one end of the adjusting screw 314 to the fixed block 316 and fixedly connecting the other end to the output end of the adjusting motor 315, the adjusting screw 314 is arranged along the second direction Y; by screwing the nut block 313 with the adjusting screw 314, when the adjusting screw 314 rotates under the driving action of the adjusting motor 315, the nut block 313 moves along the second direction Y, thereby driving the epitaxial shell 312 connected thereto to move along the second direction, thereby realizing the controllable movement of the epitaxial shell 312.

[0027] Preferably, as shown in the embodiment, Figure 3 The moving groove 3110 is opened on the upper surface of the bearing shell 311 when it is flipped to a horizontal state, so as to avoid interference with the connection between the bearing shell 311 and the flipping mechanism 35, and to avoid opening on the lower surface of the bearing shell 311 when it is flipped to a horizontal state, so that the bearing shell 311 cannot be completely embedded with the imaging plate, affecting imaging.

[0028] Further, as shown in the embodiment, Figure 4 The control mechanism 36 includes a connecting structure 361 and a control structure 362; The connecting structure 361 includes a connecting rod 3611 and a connecting hoop 3612; the connecting rod 3611 is arranged along the direction parallel to the power transmission line and is fixed in the flaw detection cavity 330; the X-ray machine 32 is fixedly connected to the bottom of the side surface opposite to the connecting rod 3611, and the connecting hoop 3612 is rotationally connected to the outer periphery of the connecting rod 3611, so that the X-ray machine 32 is rotationally connected to the connecting rod 3611; The regulating structure 362 comprises a servo motor 3622, a crank 3623 and a sliding frame 3624; the top of the X-ray machine 32 is fixed with the sliding frame 3624, the sliding frame 3624 is provided with a sliding channel penetrating through the two side surfaces of the sliding frame 3624 in the direction parallel to the power transmission line; the crank 3623 penetrates through the sliding channel; two servo motors 3622 are oppositely arranged in the direction parallel to the power transmission line and are fixed above the X-ray machine 32, and the two ends of the crank 3623 are fixedly connected with the output shafts of the two servo motors 3622, so that the crank 3623 rotates in the direction parallel to the power transmission line.

[0029] It can be understood that the connecting rod 3611 is arranged in extension in the direction parallel to the power transmission line, i.e. in the first direction X, and the X-ray machine 32 and the connecting rod 3611 are connected through the connecting hoop 3612, so that the X-ray machine 32 can rotate relative to the connecting rod 3611; and in order to make the rotation controllable, the rotation of the crank 3623 is driven by the synchronous rotation of the two oppositely arranged servo motors 3622, and since the crank 3623 penetrates through the sliding channel, the crank 3623 can drive the X-ray machine 32 to rotate.

[0030] Further, as shown in Figure 6 and Figure 8 to specifically realize that the bearing frame 33 is movably connected to the extension frame 11 in the vertical direction; the extension frame 11 comprises a bearing table 111 and an extension rod 112; The bearing table 111 is horizontally arranged, and two extension rods 112 are fixedly arranged on the bottom of the bearing table 111 in the direction parallel to the power transmission line and vertically downwardly extend; the lower surface of the bearing table 111 and the opposite side surface of the two extension rods 112 jointly define the mounting cavity 110; The two side surfaces of the bearing frame 33 in the direction parallel to the power transmission line are each fixed with at least two groups of sliding wheels 3313; The at least two groups of sliding wheels 3313 are arranged in the vertical direction, each group of sliding wheels 3313 comprises two sliding wheels 3313 arranged in the vertical direction, and a clamping cavity for clamping the extension rod 112 is defined between the two sliding wheels 3313.

[0031] It can be understood that the clamping cavities for clamping the extension rods 112 are formed between the two sliding wheels 3313 arranged at intervals, so that the carrier frame 33 can be sleeved on the outer periphery of the extension frame 11 through the clamping cavities, thereby realizing the sliding connection of the carrier frame 33 to the extension frame 11 in the vertical direction. The at least two groups of sliding wheels 3313 on each side surface can clamp the extension rods 112 through at least two clamping cavities when the lifting mechanism lifts or lowers the carrier frame 33, so as to prevent the carrier frame 33 from shaking, thereby improving the stability of lifting.

[0032] Preferably, as shown in Figure 4 and Figure 8 In order to simplify the structure of the carrier frame 33, reduce the self-weight of the carrier frame 33, and reduce the possibility of blocking between the imaging member 31 and the X-ray machine 32, the carrier frame 33 comprises a side frame 331 and a cross frame 332. The two side frames 331 are arranged at intervals along the first direction X, and the side frames 331 are vertically extended. The cross frame 332 is fixed between the two side frames 331, and the cross frame 332 is arranged along the first direction X and fixedly connected to the top of the side frame 331. The cross frame 332 is used to be connected with the lifting mechanism. Through the connection between the cross frame 332 and the lifting mechanism, the connection between the lifting mechanism and the carrier frame 33 is realized.

[0033] Preferably, as shown in Figure 8 In order to realize the lifting or lowering of the carrier frame 33 by the lifting mechanism, the lifting mechanism 34 comprises a winch 341 and a lifting rope 342. The winch 341 is fixedly arranged on the lower surface of the carrier table 111, one end of the lifting rope 342 is fixedly connected with the output end of the winch 341 and wound around the output end of the winch 341, and the other end is fixedly connected with the cross frame 332.

[0034] It can be understood that the winch is a kind of existing lifting equipment, which can lift or lower the end of the lifting rope 342 by winding or loosening the lifting rope 342, thereby driving the lifting or lowering of the carrier frame 33. The specific structure of the winch belongs to the prior art, which will not be described here. Different winches can be selected according to actual needs.

[0035] Preferably, as shown in Figure 1 , Figure 2 and Figure 6As shown, the hoist is protected to reduce the influence of natural environment such as wind, snow and rain; the outer periphery of the hoist is sleeved with a protection frame 14, the protection frame 14 is hollow with open upper and lower ends, and the top of the protection frame 14 is fixedly connected with the bottom of the bearing table 111.

[0036] Preferably, as shown in Figure 1 , Figure 2 and Figure 6 shown, in order to reduce the weight of the protection frame 14, thereby reducing the overall weight of the live flaw detection device 100 for multi-split transmission line, the protection frame 14 is provided with a plurality of weight-reducing holes penetrating its inner and outer surfaces.

[0037] Preferably, as shown in Figure 4 shown, in order to facilitate the connection of the control mechanism 36 and the side frame 331, the side frame 331 includes a side plate 3311 and a side rod 3312 arranged in sequence from top to bottom in the vertical direction. The side surface opposite to the extension frame 11 of the side plate 3311 is fixedly provided with the at least two groups of sliding wheels 3313.

[0038] The middle sections of the two side rods 3312 are fixedly provided with three-way pipes 3621, the three-way pipes 3621 are oppositely arranged, so that a section of pipe not sleeved on the side rod 3312 can be used to install the follow-up motor 3622.

[0039] Further, as shown in Figure 4 shown, in order to realize the overturning of the imaging member 31; the overturning mechanism 35 includes an overturning head 351 and an overturning motor 352; The overturning motor 352 is fixedly arranged on the side surface of the bearing frame 33 opposite to the flaw detection cavity 330; The two side surfaces of the imaging member 31 in the direction parallel to the transmission line are fixedly provided with overturning heads 351; the overturning heads 351 are arranged in the bearing frame 33, and at least one of the overturning heads 351 partially penetrates the bearing frame 33 and is fixedly connected with the output end of the overturning motor 352.

[0040] Further, as shown in Figure 1 and Figure 2 shown, the live flaw detection device 100 for multi-split transmission line further includes a walking assembly 2, the walking assembly 2 includes a walking wheel 21, a power mechanism 22 and a walking frame 23; The extension frame 11 is provided with the walking frame 23 on the two side surfaces in the direction parallel to the transmission line; The walking frame 23 is provided with a walking passage penetrating its upper and lower surfaces, and the walking wheel 21 is rotationally connected with the walking frame 23 through the power mechanism 22; The walking wheel 21 is provided with a walking groove 210 for contacting the power transmission line, the walking groove 210 is arranged along the circumferential direction of the walking wheel 21, and the groove surface of the walking groove 210 defines the hanging position.

[0041] It can be understood that, in order to enable the charged flaw detection device 100 for multi-split power transmission line to be hung on and walk along the power transmission line, the walking groove 210 is arranged on the walking wheel 21 to contact the power transmission line, so that the walking wheel 21 can be hung on the power transmission line through the walking frame 23 and the extension frame 11, and thus the groove surface of the walking groove 210 defines the hanging position for hanging the extension frame 11 on the power transmission line. In addition, the walking wheel 21 is rotationally connected to the walking frame 23 through the power mechanism 22, so that the walking wheel 21 can rotate under the driving of the power mechanism 22, thereby driving the extension frame 11 to move along the extension direction of the power transmission line through the friction between the walking groove 210 and the power transmission line.

[0042] Preferably, in the embodiment, the walking groove 210 is a V-shaped groove, which has better guiding and clamping properties for the power transmission line than another commonly used U-shaped groove.

[0043] Further, as shown in Figure 1 , Figure 2 and Figure 5 , in order to improve the reliability of the walking wheel 21 walking on the power transmission line, the walking assembly 2 further comprises an anti-falling roller 24 and a driving mechanism 25. The anti-falling roller 24 is connected to the extension frame 11 through the driving mechanism 25 and is arranged below the walking wheel 21; the driving mechanism 25 is used to switch the anti-falling roller 24 between the anti-falling state and the non-anti-falling state. When the anti-falling roller 24 is in the anti-falling state, the anti-falling roller 24 is arranged horizontally and is located directly below the walking wheel 21, and a gap for the power transmission line to pass through is formed between the anti-falling roller 24 and the walking wheel 21. When the anti-falling roller 24 is in the non-anti-falling state, the anti-falling roller 24 is arranged vertically and is located below the side of the walking wheel 21.

[0044] It can be understood that, by the driving mechanism 25, the anti-falling roller 24 is switched between the anti-falling state and the non-anti-falling state, so that when it is necessary to lift the charged flaw detection device 100 for multi-split power transmission line away from the power transmission line, the anti-falling roller 24 can be switched to the non-anti-falling state, so that the power transmission line can be separated from the charged flaw detection device 100 for multi-split power transmission line.

[0045] Preferably, asFigure 6 As shown, in order to connect the walking frame 23 with the extension frame 11, the extension frame 11 further comprises extension plates 113; Two extension plates 113 are arranged on the outer side of the extension rod 112 along the first direction X, and the walking assembly 2 is arranged on the side of the extension plate 113 away from the extension rod 112.

[0046] Further, as shown, Figure 6 In order to reduce the friction of the power transmission line on which the device for on-line defect detection of multi-bundle power transmission line 100 leans when the device for on-line defect detection of multi-bundle power transmission line 100 moves, the bearing assembly 1 further comprises a support rod 15 and a roller mechanism 16. The support rod 15 extends along a direction parallel to the power transmission line and is fixedly arranged at the bottom of the mounting cavity 110. The support rod 15 is provided with at least one roller mechanism 16, and the roller mechanism 16 has a roller 161 whose axial direction is perpendicular to the support rod 15.

[0047] It can be understood that the axial direction of the roller 161 is perpendicular to the first direction X, and the rolling direction of the roller 161 is parallel to the first direction X, so that when the device for on-line defect detection of multi-bundle power transmission line 100 moves, the roller 161 rolls on the power transmission line on which the device for on-line defect detection of multi-bundle power transmission line 100 leans, thereby reducing the influence of the device for on-line defect detection of multi-bundle power transmission line 100 on the power transmission line on which the device for on-line defect detection of multi-bundle power transmission line 100 leans.

[0048] Preferably, as shown in Figure 6 and Figure 7 In order to connect the roller 161 with the support rod 15, the roller mechanism 16 further comprises a roller frame 162 and an assembly head 163. The roller frame 162 comprises a back plate 1621 and clamping heads 1622 arranged on the upper and lower ends of the same side of the back plate 1621. A rotating shaft 1623 perpendicular to the support rod 15 is fixedly arranged between the two clamping heads 1622, and the roller 161 is movably sleeved on the rotating shaft 1623. The assembly head 163 is arranged on the opposite sides of the back plate 1621. The assembly head 163 comprises a C-shaped clamping block 1631 and a fastening bolt 1632. The C-shaped clamping block 1631 is clamped on the support rod 15. The C-shaped clamping block 1631 and the support rod 15 are both provided with through holes, and the fastening bolt 1632 passes through the through holes of the C-shaped clamping block 1631 and the support rod 15 and is locked together by a locking nut.

[0049] Further, as shown, Figure 1 and Figure 6As shown, in order to facilitate the unmanned aerial vehicle or other hanging equipment to hoist the extension frame 11, the bearing assembly 1 further comprises a hook 12 fixedly arranged on the top of the extension frame 11. In order to improve the reliability of the hook 12, the hook 12 comprises a straight rod 121 and a V-shaped rod 122. Two straight rods 121 are arranged vertically and fixedly connected to the extension frame 11 along the direction parallel to the power transmission line. The included angle between the plane where the V-shaped rod 122 is located and the plane where the two straight rods 121 are located is 30°-45°.

[0050] It can be understood that the included angle of 30°-45° facilitates the entry of the unmanned aerial vehicle into the hook 12, and the V-shaped rod 122 forms an enlarged funnel-shaped entrance under the top-down perspective of the unmanned aerial vehicle, which is more conducive to the entry of the hoisting rod. Under the disturbance of wind, the double straight rod 121 structure is superior to the single hook in terms of anti-swing.

[0051] Preferably, as shown in Figure 1 and Figure 6 in order to reduce the risk of damage to the unmanned aerial vehicle or other hoisting equipment caused by the hook 12, the connection position of the V-shaped rod 122 and the straight rod 121 is an arc-shaped structure.

[0052] Preferably, in order to reduce the processing difficulty, the straight rod 121 and the V-shaped rod 122 are respectively manufactured and then welded and fixed. In other embodiments, the straight rod 121 and the V-shaped rod 122 can be integrally formed.

[0053] The working process of the present application is as follows: According to the counterclockwise order, the six power transmission line conductors are respectively named as conductor 1#, conductor 2#, conductor 3#, conductor 4#, conductor 5# and conductor 6# (as shown in Figure 9 ).

[0054] It should be noted that the conductor 1#, the conductor 2# and the conductor 3# are parallel power transmission lines on one side, the conductor 1# is the power transmission line for hanging the live flaw detection device 100 for multi-split power transmission lines, the conductor 2# is the power transmission line hanging on the outside, and the conductor 3# is the power transmission line hanging below. Similarly, the conductor 4#, the conductor 5# and the conductor 6# are parallel power transmission lines on the other side, the conductor 6# is the power transmission line for hanging the live flaw detection device 100 for multi-split power transmission lines, the conductor 5# is the power transmission line hanging on the outside, and the conductor 4# is the power transmission line hanging below.

[0055] The boom of the unmanned aerial vehicle or other hanging device is hooked with the hook 12, the live detection device 100 for multi-bundle transmission line is lifted to the upper side of the conductor 1#, so that the walking wheel 21 is placed on the conductor 1#, and the anti-drop roller 24 is controlled to rotate to the horizontal and is spaced below the walking wheel 21 by the driving mechanism 25, so as to clamp the conductor 1# between the walking wheel 21 and the anti-drop roller 24. At this time, the roller 161 is overlapped to the conductor 5#. The imaging part 31 is turned to the horizontal by starting the turnover motor 352, and the X-ray machine 32 is rotated by starting the follow-up motor 3622, so that the conductor 1# is located between the imaging part 31 and the X-ray machine 32, and the X-ray detection of the conductor 1# is performed.

[0056] After the X-ray detection of the conductor 1# is completed, the imaging part 31 is turned to the vertical by starting the turnover motor 352. The lifting rope is loosened by starting the winch, and the carrier frame 33 is lowered under the action of gravity. When it is lowered to the appropriate height, the imaging part 31 is turned to the horizontal by starting the turnover motor 352, and the X-ray machine 32 is rotated by starting the follow-up motor 3622, so that the conductor 3# (the conductor below the conductor 1#) is located between the imaging part 31 and the X-ray machine 32, and the X-ray detection of the conductor 3# is performed.

[0057] After the X-ray detection of the conductor 3# is completed, the imaging part 31 is turned to the vertical by starting the turnover motor 352. The lifting rope is wound by starting the winch, and the carrier frame 33 is lifted to the height corresponding to the conductor 2#. The imaging part 31 is turned to the horizontal by starting the turnover motor 352, and the X-ray machine 32 is rotated by starting the follow-up motor 3622, and the adjusting motor 315 is started to drive the adjusting screw 314 to rotate, so that the nut block 313 moves along the moving groove 3110, and in turn drives the outer extension shell 312 to move towards the conductor 2#, so that the conductor 2# is located between the imaging plate of the outer extension shell 312 and the X-ray machine 32, and the X-ray detection of the conductor 2# is performed.

[0058] After the X-ray detection of the conductor 2# is completed, the imaging part 31 is turned to the vertical by starting the turnover motor 352. The lifting rope is wound by starting the winch, and the carrier frame 33 is lifted to the height in the initial state. The anti-drop roller 24 is controlled to rotate to the vertical by the driving mechanism 25, and the live detection device 100 for multi-bundle transmission line is lifted from the conductor 1# by using the unmanned aerial vehicle. After the direction is turned, it is hung on the conductor 6#, and the above operation is repeated to sequentially complete the X-ray detection of the conductors 6#, 4# and 5#. Finally, the live detection device 100 for multi-bundle transmission line is lifted from the conductor 6# by using the unmanned aerial vehicle and is returned to the ground.

[0059] In summary, the embodiment of the present application provides a kind of charged flaw detection device 100 for multi-split transmission line, it includes bearing assembly 1 and flaw detection component 3;The charged flaw detection device 100 for multi-split transmission line is lifted after the auxiliary lifting of unmanned aerial vehicle or other hanging equipment, is hung in one of transmission line in multi-split line in the hanging position;And in the process of hanging, imaging piece 31 and X-ray machine are respectively turned to vertical placement by the turnover mechanism 35 and the control mechanism 36 to adapt to the narrow gap between adjacent transmission line to smoothly carry out hanging.In the X-ray detection, the X-ray machine 32 is rotated by the control mechanism 36, the imaging piece 31 is rotated by the turnover mechanism 35, so that the transmission line of hanging is located between imaging piece 31 and X-ray machine 32, to carry out X-ray detection flaw detection to the transmission line of hanging;The bearing frame 33 is lowered by lifting mechanism, so that the transmission line below hanging is located between imaging piece 31 and X-ray machine 32, to carry out X-ray detection flaw detection to the transmission line below hanging;The bearing frame 33 is raised by lifting mechanism, the imaging piece 31 and X-ray machine 32 are rotated by turnover mechanism 35 and control mechanism 36 respectively, and the elongation of imaging piece 31 itself is used to make the transmission line outside hanging be located between imaging piece 31 and X-ray machine 32, to carry out X-ray detection flaw detection to the transmission line outside hanging;Thus, X-ray detection of transmission conductor on one side is realized by single hanging, i.e. twice hanging can complete X-ray detection of multi-split conductor, compared with the detection device of existing single hanging that can only realize single detection, greatly improve the detection efficiency.

[0060] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A live-line flaw detection device for multi-split transmission lines, characterized in that, Includes load-bearing components and flaw detection components; The supporting component includes an extension frame that extends vertically and has an installation cavity. The installation cavity penetrates the two sides of the extension frame on the horizontal plane that are perpendicular to the transmission line. The extension frame has mounting positions on both sides in the direction parallel to the transmission line for mounting the extension frame to the transmission line. The flaw detection assembly includes an imaging element, an X-ray machine, a support frame, a lifting mechanism, a tilting mechanism, and a control mechanism; the lifting mechanism and the support frame are arranged sequentially from top to bottom in the mounting cavity, the lifting mechanism is fixedly connected to the extension frame, and the support frame is vertically arranged and slidably connected to the extension frame in a vertical direction; the output end of the lifting mechanism is connected to the support frame and is used to raise or lower the support frame; The support frame has a flaw detection cavity, which penetrates both sides of the support frame on the horizontal plane perpendicular to the power transmission line. The imaging element and the X-ray machine are arranged sequentially from top to bottom in the flaw detection cavity. The X-ray machine is rotatably connected to the support frame through the control mechanism. The imaging element is rotatably connected to the support frame through the flipping mechanism, and the imaging element can extend or retract to block the X-ray path of the X-ray machine.

2. The live-line flaw detection device for multi-split transmission lines as described in claim 1, characterized in that, The imaging element includes a supporting shell, an extension shell, and a telescopic structure; The carrier shell is rotatably connected to the carrier frame via the flipping mechanism; the carrier shell is hollow and has an extension opening on one side surface perpendicular to the power transmission line, and the extension shell slides into the carrier shell through the extension opening; both the carrier shell and the extension shell have an imaging plate embedded on the side surface opposite to the X-ray machine for blocking the X-ray path of the X-ray machine. The telescopic structure is disposed on one side surface of the carrier shell and connected to the epitaxial shell. The telescopic structure is used to drive the epitaxial shell away from or into the carrier shell, so that the imaging element extends or contracts.

3. The live-line flaw detection device for multi-split transmission lines as described in claim 2, characterized in that, The telescopic structure includes a nut block, an adjusting screw, an adjusting motor, and a fixing block; The supporting shell is provided with a moving groove, which extends along the direction of relative movement between the outer shell and the supporting shell, and penetrates the inner and outer surfaces of the supporting shell; The adjusting motor and the fixed block are respectively fixed at both ends of the extending direction of the moving slot. One end of the adjusting screw is rotatably connected to the fixed block, and the other end is fixedly connected to the output end of the adjusting motor. The nut block is movably inserted into the moving slot. One end of the nut block is sleeved on the outer periphery of the adjusting screw and screwed to the adjusting screw, and the other end is fixedly connected to the outer shell.

4. The live-line flaw detection device for multi-split transmission lines as described in claim 1, characterized in that, The control mechanism includes a connection structure and a control structure; The connection structure includes a connecting rod and a connecting clamp; the connecting rod extends in a direction parallel to the power transmission line and is fixed in the flaw detection chamber; a connecting clamp is fixed at the bottom of the side surface of the X-ray machine opposite to the connecting rod, and the connecting clamp is rotatably mounted on the outer periphery of the connecting rod so that the X-ray machine is rotatably connected to the connecting rod; The control structure includes a follower motor, a crank, and a carriage; the carriage is fixedly mounted on the top of the X-ray machine, and a sliding channel is provided in the carriage, which passes through both sides of the carriage in a direction parallel to the power transmission line; the crank passes through the sliding channel; two follower motors are arranged opposite each other in a direction parallel to the power transmission line and fixed above the X-ray machine, and the two ends of the crank are fixedly connected to the output shafts of the two follower motors, so that the crank rotates about a direction parallel to the power transmission line.

5. The live-line flaw detection device for multi-split transmission lines as described in claim 1, characterized in that, The extension frame includes a support platform and an extension rod; The support platform is horizontally set, and the two extension rods are fixed at intervals at the bottom of the support platform in a direction parallel to the power transmission line and extend vertically downward. The lower surface of the support platform and the opposite side surfaces of the two extension rods together define the mounting cavity; The support frame is fixed with at least two sets of sliding wheels on both sides of the surface in the direction parallel to the transmission line; At least two sets of sliding wheels are arranged at intervals in the vertical direction, each set of sliding wheels includes two sliding wheels arranged at intervals, and a clamping cavity for clamping the extension rod is defined between the two sliding wheels.

6. The live-line flaw detection device for multi-split transmission lines as described in claim 1, characterized in that, The flipping mechanism includes a flipping head and a flipping motor; The flipping motor is fixed to the side surface of the support frame facing away from the flaw detection chamber; the imaging element has flipping heads fixed to both sides of its surface in the direction parallel to the power transmission line; the flipping heads pass through the support frame, and one of the flipping heads at least partially passes through the support frame and is fixedly connected to the output end of the flipping motor.

7. The live-line flaw detection device for multi-split transmission lines as described in claim 1, characterized in that, It also includes a walking assembly, which includes walking wheels, a power mechanism, and a walking frame; The extension frame is provided with the traveling frame on both sides of the surface in a direction parallel to the power transmission line; The walking frame has a walking channel running through its upper and lower surfaces, and the walking wheels are rotatably connected to the walking frame through the power mechanism; The traveling wheel has a traveling groove for contacting the power transmission line. The traveling groove is arranged in a ring around the circumference of the traveling wheel, and the groove surface defines the mounting position.

8. The live-line flaw detection device for multi-split transmission lines as described in claim 7, characterized in that, The walking assembly also includes anti-detachment rollers and a drive mechanism; The anti-detachment roller is connected to the extension frame via the drive mechanism and is located below the walking wheel; The drive mechanism is used to switch the anti-detachment roller between the anti-detachment state and the non-anti-detachment state; When the anti-detachment roller is in the anti-detachment state, the anti-detachment roller is arranged horizontally and located directly below the traveling wheel, and a gap is formed between the anti-detachment roller and the traveling wheel for the transmission line to pass through. When the anti-detachment roller is in the non-detachment state, the anti-detachment roller is arranged vertically and located below the side of the traveling wheel.

9. The live-line flaw detection device for multi-split transmission lines as described in claim 1, characterized in that, The load-bearing component also includes a support rod and a roller mechanism; The support rod extends in a direction parallel to the power transmission line and is fixed to the bottom of the mounting cavity; The support rod is provided with at least one of the roller mechanisms; the roller mechanism has rollers whose axial direction is perpendicular to the support rod.

10. The live-line flaw detection device for multi-split transmission lines as described in claim 1, characterized in that, The load-bearing assembly also includes a hook, which is fixed to the top of the extension frame; The hook includes a straight rod and a V-shaped rod; The two straight rods are vertically spaced apart along a direction parallel to the power transmission line and are fixedly connected to the extension frame; The two ends of the V-shaped rod are respectively fixedly connected to the upper ends of the two straight rods; The angle between the plane containing the V-shaped rod and the plane containing the two straight rods is 30° to 45°.

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