Insulation rope and rod leakage current monitoring device

Abstract

The invention relates to the field of leakage current detection equipment, in particular to an insulation rope and rod leakage current monitoring device which comprises a monitor body, a fixed shell and a movable shell which are provided with opposite openings and are both in a semicircular ring shape are arranged on the outer side of the monitor body, and the fixed shell and the movable shell are combined to form a detachable full-circle jaw. The monitor body is fixed outside the fixed shell, inner ring fixing pieces are arranged on the inner sides of the fixed shell and the movable shell, and telescopic frames capable of being adjusted in the radial direction of the whole circle clamp opening are arranged in the middles of the two sets of inner ring fixing pieces. The frame transversely moves to push the rigid supporting section at the outer end of the holder to straighten the monitoring section of the object to be measured, so that distortion of magnetic induction lines is avoided; the synchronous rack drives the inner ring synchronous semi-ring to rotate to drive the hoop plates to be meshed in a staggered manner, the inner rings of the fixed shell and the movable shell are locked, and the closing rigidity is enhanced; during rotation, the guide rod of the telescopic frame slides along the chute, pushes and pushes the clamping head to radially extend out, symmetrically clamps the to-be-detected object to the center of the jaw, ensures concentricity of the magnetic induction detection area, and improves the measurement precision.

Description

Technical Field

[0001] The present invention relates to the field of leakage current detection equipment, in particular to an insulating rope and rod leakage current monitoring device. Background Art

[0002] Leakage current monitors are key equipment for ensuring the safety of live working. They are primarily used to monitor the leakage current of insulating tools (such as insulating rods and insulating ropes) in real time, preventing on-site workers from being unaware of potential safety hazards when insulation fails to meet standards due to weather, equipment aging, or humid conditions. Leakage current monitors often use a clamp-on ammeter structure, a portable tool that can clamp and measure current without disconnecting the circuit. The principle is that the jaws contain an openable toroidal iron core with a secondary coil wound around it. When the jaws are closed, the iron core concentrates the magnetic flux lines surrounding the conductor into the secondary coil. Based on the principle of electromagnetic induction, the secondary coil induces a current proportional to the conductor current.

[0003] At present, the current monitoring equipment suitable for insulating rods and ropes is to clamp the object to be measured through a clamping head with an adjustable inner diameter. When the object to be measured is an insulating rope, due to the deadweight of the detection equipment, the insulating rope, wire and other flexible objects to be measured that can be bent will be bent by the monitor body when not tightened, especially at the inlet and outlet of the clamping section. At this time, the bent section of the object to be measured is too close to the measurement position, which will affect the magnetic field distribution generated by the current of the object to be measured inside the jaws, resulting in the iron core inside the jaws being unable to uniformly capture the magnetic flux lines. At this time, due to the distortion of the magnetic field of the bent section, additional magnetic field interference will occur, affecting the measurement accuracy. If the lengthening is adopted, the bending section of the object to be measured will be too close to the measurement position, which will affect the magnetic field distribution generated by the current of the object to be measured inside the jaws. The clamping head avoids the bending position of the object under test and the measurement position. Although this can solve the problem of uniform magnetic field distribution for flexible objects under test (such as insulating ropes and wires), when using an overly long clamping head to measure hard objects under test (such as insulating rods), if the measured area is in a bent state and cannot be straightened, such an overly long clamping head will prevent the object under test from being clamped centrally in the jaws, which will cause the object under test to deviate and the magnetic field to be incompletely captured by the iron core. Especially in monitors that use Hall effect to measure current, when the object under test deviates from the center, the actual value of the magnetic field strength at the Hall element will not match the calibrated value, thereby exacerbating measurement errors. Summary of the Invention

[0004] The purpose of the present invention is to provide an insulating rope and rod leakage current monitoring device in order to solve the above-mentioned problems. The frame moves horizontally to push the rigid support section at the outer end of the retaining frame to straighten the monitoring section of the object to be tested to avoid distortion of the magnetic flux lines; the synchronous rack drives the inner ring synchronous half ring to rotate, driving the hoop plates to interlock and lock the fixed shell and the inner ring of the movable shell to enhance the closing rigidity; when rotating, the guide rod of the telescopic frame slides along the inclined groove, and the top pressure pushes the clamping head to extend radially, symmetrically clamping the object to be tested to the center of the jaws, ensuring the concentricity of the magnetic detection area and improving the measurement accuracy. See the following for details.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The present invention provides an insulating rope and rod leakage current monitoring device, comprising a monitor body, the monitor body being provided with a fixed shell and a movable shell having opposing openings and both in the shape of a semicircular ring, the fixed shell and the movable shell being combined to form a detachable full-circular jaw, the monitor body being fixed to the exterior of the fixed shell, the fixed shell and the movable shell being provided with inner ring fixing members on the inside, and telescopic brackets being provided in the middle of both sets of inner ring fixing members and being adjustable radially along the full-circular jaw;

[0007] Two groups of laterally symmetrically distributed frames are provided on the outside of the fixed shell and the movable shell, and retaining frames extending axially along the full-circular jaws are provided on the front and rear sides of the exteriors of the two groups of frames. The outer ends of the retaining frames are bent inward to form support sections of arc-shaped bent rods. Multiple groups of constraint strips supporting the lateral positions of the frames are provided on the outsides of the fixed shell and the movable shell, and the constraint strips are used to adjust the lateral positions of the frames to change the spacing between the support sections of the two groups of retaining frames on the same end face of the full-circular jaws.

[0008] When the above-mentioned insulating rope and rod leakage current monitoring device is used to clamp and monitor the current of a flexible object to be tested, such as an insulating rope or a conductor, the outer ring fixing part is rotated to ensure that the clearance groove of the knob is aligned with the positioning hook opening of the fixed shell. At this time, the locking state of the movable shell by the outer ring fixing part is released, and then the movable shell is rotated outward to open under the support of the rotating ear, so that the movable shell supports a set of inner ring fixing parts and the telescopic frame inside the movable shell to open outward, and then the flexible object to be tested is placed between the fixed shell and the two sets of telescopic frames inside the movable shell, and the movable shell is reset again. And turn the knob to lock the positioning hook to achieve the outer ring locking action of the movable shell on the fixed shell; then push the frame to drive the synchronous rack and the retaining frame to move horizontally toward the flexible object to be measured, change the frame to be clamped between the two sets of constraint strips at different positions, so as to use the support section of the outer end of the retaining frame to support the flexible object to be measured, and ensure that the object to be measured in the monitoring area is in a straight state; while pushing the frame to move horizontally toward the object to be measured, the synchronous rack pushes the gear ring to drive the synchronous half rings of the two sets of inner ring fixing parts to rotate, and the synchronous half ring drives the inner ring slider to support the inner ring groove of the slate hoop. The cam is rotated to rotate one end of the hoop plate on the inner side of the fixed shell into the movable shell, and at the same time, the cam is rotated one end of the hoop plate on the inner side of the movable shell into the fixed shell, thereby locking the inner rings of the movable shell and the fixed shell by using the two sets of synchronously rotating hoop plates; while the hoop plates rotate, the telescopic frame rotates synchronously with the inner ring fixing piece, and since the guide rod of the telescopic frame extends into the guide groove in an inclined state, the guide rod moves along the inclined direction of the guide groove, thereby pressing the end block to compress the spring, and at this time the end block drives the support rod and the clamping head to gradually extend out of the synchronous half ring, so as to use the frame to adjust the horizontal direction of the synchronous rack The push-up action drives the synchronous half-ring to rotate, which then drives the telescopic frame to rotate, and the guide rod slides along the guide groove to synchronously extend the clamping head. While the fixed shell and the movable shell are rotated and locked by the inner ring fixing piece, the clamping head is automatically extended by the support rod to clamp the object to be measured in the monitoring area of the fixed shell and the movable shell, achieving concentric positioning of the object to be measured in the monitoring area and the full-circle jaws, ensuring that the two ends of the flexible object to be measured are tightened and straightened by the support segments of the four sets of retaining frames, so as to ensure that the magnetic flux lines in the test area can be evenly distributed;

[0009] When it is necessary to remove the frame and the retaining frame to clamp and monitor the hard object to be tested (such as an insulating rod), the base of the detector body is separated from the hook of the fixed shell, and then the frame clamped between the two adjacent sets of constraint bars is pulled outward to disengage, and then the frame is used to drive the synchronous rack and the retaining frame to be quickly removed from the full-circular jaws, and then the detector body is reset and installed on the outside of the fixed shell. At this time, the frame, synchronous rack and retaining frame that serve as supporting accessories for the flexible object to be tested are quickly removed, and then the hard object to be tested can be clamped and monitored separately without using the retaining frame for support.

[0010] Preferably, the fixed shell and the movable shell each include two groups of half shells symmetrically distributed front to back, annular retaining edges are provided at the inner edges of the half shells of the fixed shell and the movable shell, and inner ring grooves are formed between the front and rear side retaining edges inside the fixed shell and the movable shell, and the inner ring grooves are used to support the inner ring fixing part to rotate with the full circle jaw axis as the center.

[0011] Preferably, the inner ring fixing part includes an inner ring slider arranged on the inner side of the inner ring groove, a hoop plate sliding along the outer wall of the baffle is fixed on the outer side of the inner ring slider, the hoop plate is an arc-shaped plate fitting the outer wall of the baffle, and a synchronous half ring is fixed on the inner side of the inner ring slider, the synchronous half ring extends out of the end face of the full circle jaw, and the synchronous half rings of the two groups of the inner ring fixing parts are pressed against each other to form a separable circular ring structure.

[0012] Preferably, the outer end face of the synchronous half ring is fixed with an auxiliary ridge protruding outward, the outer circumference of the auxiliary ridge is surrounded by a groove-shaped gripping groove, the middle section of the hoop plate is provided with a countersunk hole passing through the inner ring slider and the synchronous half ring, the telescopic frame includes a strut that slides into the countersunk hole, one end of the strut passing through the hoop plate is fixed with an end block, and the other end of the strut is fixed with a clamping head.

[0013] Preferably, the clamping head is a longitudinally extending arc-shaped plate structure, and a spring is provided on the outer side of the support rod inside the countersunk hole to press against the end block, a guide rod is longitudinally extended through the middle of the end block, and the inner side walls of the fixed shell and the movable shell are provided with a guide groove for accommodating the end of the guide rod to extend therein, the guide groove is loosely matched with the guide rod, and the guide groove is inclined away from one end of the guide rod toward the direction close to the axis of the full-circle jaw.

[0014] Preferably, a plurality of groups of stop positions are evenly arranged along the extending direction of the guide groove on a side away from the spring, and the stop positions are arc-shaped groove structures for accommodating the end of the guide rod to be clamped therein.

[0015] Preferably, a gear ring is provided at the outer circumference of the synchronization half ring near the front and rear end faces, and synchronization racks extending laterally to the outside of the synchronization half ring are fixed on the outer side of the two groups of the frame. The synchronization racks of the two groups of the frame are staggered up and down, and the synchronization racks are meshed with the gear ring of the synchronization half ring.

[0016] Preferably, a sliding frame is provided on the outer side of the fixed shell and the movable shell, and the sliding frame is used to support the synchronous rack to drive the frame and the retaining frame to move horizontally.

[0017] Preferably, a rotating ear is provided on the bottom side of the fixed shell, and a rotating seat is provided on the bottom side of the movable shell. The rotating seat and the rotating ear cooperate to form a rotating member that supports the opening and closing of the full-circular jaws. Two groups of longitudinally arranged positioning rings are provided on the top side of the fixed shell, and outer ring fixing members are rotatably provided in the middle of the two groups of positioning rings.

[0018] Preferably, a positioning hook is provided on the top side of the movable shell, which can be extended between the two sets of positioning rings. The positioning hook is a C-shaped hook structure, the outer ring fixing part is a knob with a cylindrical pin structure, and two sets of clearance grooves are provided on the outside of the middle section of the knob. The clearance grooves are used to guide the positioning hook and the positioning ring to be detachably locked.

[0019] The beneficial effects are as follows: 1. The present invention provides a detachable frame as a support structure for the holder, and utilizes the holder extending along the extension direction of the object to be measured as a support and straightening structure for the monitoring section. When monitoring flexible objects such as insulating ropes, the monitoring section can be expanded and straightened outward, thereby avoiding magnetic field distortion caused by the bending of the object to be measured at both ends of the clamping head, thereby ensuring measurement accuracy;

[0020] 2. In addition, a synchronous rack is used to synchronize the lateral adjustment of the frame to the cage with the rotation of the synchronous half ring. When the cage is moved horizontally to clamp the two ends of the object to be measured, the hoop plates are rotated synchronously. The inner ring is locked by using two sets of semi-ring-shaped hoop plates to improve the connection stability of the fixed shell and the movable shell, thereby ensuring the closing stability of the jaws and avoiding external magnetic field interference.

[0021] 3. When the hoop plate is rotated to lock the inner ring of the movable shell and the fixed shell, the telescopic frame rotates synchronously with the inner ring fixing piece, and the guide rod is pressed by the inclined guide groove, thereby pushing the support rod to drive the clamping head to extend outward, and the clamping head simultaneously realizes the centering clamping action of the outer circumference of the object to be measured. There is no need to lock the monitoring section of the object to be measured separately, so the object to be measured is kept in the center, avoiding magnetic field deviation and ensuring the accuracy of the reading. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a main structural diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 3It is a schematic diagram of the structural decomposition of the present invention;

[0026] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the structural disassembly of the fixed shell of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the movable shell of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the telescopic frame of the present invention;

[0030] Figure 8 It is a schematic diagram of the internal structure of the fixed shell of the present invention;

[0031] Figure 9 This is a schematic structural diagram of the present invention in a state where the fixed shell and the movable shell are separated;

[0032] Figure 10 2 is a schematic diagram of the three-dimensional structure of the retainer of the present invention;

[0033] Figure 11 This is a main structural diagram of the guide groove of the present invention;

[0034] Figure 12 It is a schematic diagram of the three-dimensional structure of another direction of the present invention;

[0035] Figure 13 It is a top view of the structure of the present invention;

[0036] Figure 14 This is a schematic structural diagram of the movable shell of the present invention in an open state;

[0037] Figure 15 It is a structural schematic diagram of the present invention in the frame removal state.

[0038] The following are the descriptions of the reference numerals:

[0039] 1. Monitor body; 101. Socket; 102. Keyhole; 2. Fixed shell; 201. Rotating ear; 202. Positioning ring; 203. Hook; 3. Movable shell; 301. Rotating seat; 302. Positioning hook; 4. Inner ring fixing piece; 401. Inner ring slider; 402. Hoop plate; 403. Auxiliary ridge; 404. Countersunk hole; 405. Synchronizing half ring; 406. Gear ring; 5. Telescopic frame; 501. Clamping head; 502. Support rod; 503. End block; 504. Guide rod; 505. Spring; 6. Frame; 7. Synchronizing rack; 8. Cage; 801. Support section; 9. Outer ring fixing piece; 901. Knob; 902. Clearance groove; 10. Constraint strip; 11. Slide frame; 12. Guide groove; 12a. Stop position; 13. Inner ring groove; 14. Stop edge. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0041] See also Figures 1-15 As shown, the present invention provides an insulating rope and rod leakage current monitoring device, including a monitor body 1. The monitor body 1 is provided with a fixed shell 2 and a movable shell 3 with openings facing each other and both in the shape of a semicircle. The movable shell 3 serves as a dynamic clamping actuator and is opened and closed by a hinge. A clamping seat 101 is provided on the monitor body 1 near the fixed shell 2. A hook 203 that can be engaged with the clamping seat 101 is provided on the outside of the fixed shell 2. A lock hole 102 is vertically penetrated in the middle of the clamping seat 101 through which a screw is passed to connect the hook 203, so as to improve the connection stability between the monitor body and the fixed shell 2. The fixed shell 2 and the movable shell 3 are combined into a detachable full-circle jaw. The monitor body 1 is fixed to the outside of the fixed shell 2. Inner ring fixings 4 are provided on the inside of the fixed shell 2 and the movable shell 3. A telescopic frame 5 that can be adjusted along the radial direction of the full-circle jaw is provided in the middle of the two sets of inner ring fixings 4. The telescopic frame 5 serves as a clamping and positioning mechanism for the object to be measured that extends into the full-circle jaw.

[0042] Two groups of laterally symmetrically distributed frames 6 are provided on the outside of the fixed shell 2 and the movable shell 3. The frames 6 serve as carriers for conducting operating force. The front and rear sides of the outside of the two groups of frames 6 are provided with retaining frames 8 extending axially along the full-circular jaws. The outer ends of the retaining frames 8 are bent inward to form support sections 801 of arc-shaped bent rods. The support sections 801 can realize arc-shaped contact support, disperse contact stress and avoid clamping pressure loss on the insulating layer of the object to be measured. Multiple groups of constraint strips 10 supporting the lateral position of the frames 6 are provided on the outside of the fixed shell 2 and the movable shell 3. The constraint strips 10 serve as discrete positioning mechanisms and can provide multi-level adjustable lateral tightening strokes to adjust the lateral position of the frames 6 to change the spacing between the end support sections 801 of the two groups of retaining frames 8 on the same end face of the full-circular jaws.

[0043] As an optional embodiment, both the fixed housing 2 and the movable housing 3 comprise two sets of symmetrically spaced half-shells. Annular retaining edges 14 are located on the inner edges of each half-shell. These retaining edges 14 serve as mechanical stoppers, preventing foreign matter from entering the transmission area. Inner ring grooves 13 are formed between the front and rear retaining edges 14 within both the fixed and movable housings 2 and 3. These grooves serve as a rotational track, supporting the inner ring retainer 4 in rotation about the full-circle jaw axis. The inner ring retainer 4 includes an inner ring slider 401, located within the inner ring groove 13, which serves as a sliding assembly. A hoop plate 402 is fixed to the outside of the inner ring slider 401 and slides along the outer wall of the retaining edge 14. The hoop plate 402 is an arc-shaped plate that fits the outer wall of the retaining edge 14. A synchronization half ring 405 is fixed to the inside of the inner ring slider 401. The synchronization half ring 405 extends out of the end face of the full-circular jaws. The synchronization half rings 405 of the two sets of inner ring fixing parts 4 are pressed against each other to form a separable circular ring structure.

[0044] An outwardly protruding auxiliary flange 403 is fixed to the outer end surface of the synchronizing half-ring 405. A grooved gripping groove is arranged around the outer circumference of the auxiliary flange 403. This gripping groove serves as an anti-slip structure and a point of force for manual operation, enhancing grip stability. A countersunk hole 404 is provided in the middle section of the hoop plate 402, penetrating the inner ring slider 401 and the synchronizing half-ring 405. The telescopic frame 5 includes a support rod 502 that slides into the countersunk hole 404. This support rod 502, which serves as a power transmission rod, is made of stainless steel to ensure long-term structural strength. An end block 503 is fixed to one end of the strut 502 extending through the hoop plate 402, and a clamping head 501 is fixed to the other end of the strut 502. The clamping head 501 is a longitudinally extending arcuate plate-like structure. A spring 505 is sheathed on the outside of the strut 502 within the counterbore 404, which abuts against the end block 503. A guide rod 504 extends longitudinally through the middle of the end block 503, serving as a motion guide. Guide grooves 12 are provided on the inner sidewalls of both the fixed shell 2 and the movable shell 3, accommodating the end of the guide rod 504. The guide grooves 12 are loosely fitted with the guide rod 504, and are held against the inner wall of the guide grooves 12 by springs 505. The guide grooves 12 are tilted away from the end of the guide rod 504 toward the axis of the circular jaws. This tilt acts as a displacement amplification mechanism, generating axial displacement of the strut 502 as the guide rod 504 rotates with the end block 503 and the strut 502. The guide groove 12 is provided with a plurality of groups of stop positions 12a evenly spaced along its extension direction on the side away from the spring 505. The stop positions 12a are arc-shaped groove structures that accommodate the ends of the guide rods 504. The stop positions 12a serve as a graded positioning mechanism and can provide locking positions for the guide rods 504. The clamping head 501 is flush with the inner side of the support section 801, ensuring that the middle section of the object to be tested and the supports at both ends are clamped synchronously.

[0045] A gear ring 406 is provided on the outer circumference of the synchronization half ring 405 near the front and rear end surfaces. The gear ring 406 serves as a power transmission component. A synchronization rack 7 extending laterally to the outside of the synchronization half ring 405 is fixed on the outside of the two sets of frames 6. The synchronization rack 7 serves as a lateral operating force and rotational motion conversion component. The synchronization racks 7 of the two sets of frames 6 are staggered up and down, and the synchronization racks 7 are meshed with the gear ring 406 of the synchronization half ring 405. A sliding frame 11 is provided on the outside of the fixed shell 2 and the movable shell 3. The sliding frame 11 is used to support the synchronization rack 7 to drive the frame 6 and the retaining frame 8 to move laterally.

[0046] A rotating ear 201 is provided on the bottom side of the fixed shell 2. The rotating ear 201 cooperates with the rotating seat 301 on the bottom side of the movable shell 3 to form a rotating member that supports the opening and closing of the full-circle jaws, enabling flexible opening and closing movements and facilitating the insertion and removal of the object to be tested. Two sets of longitudinally arranged positioning rings 202 are provided on the top side of the fixed shell 2. An outer ring fixing member 9 is rotatably provided in the middle of the two sets of positioning rings 202. A positioning hook 302 that can extend between the two sets of positioning rings 202 is provided on the top side of the movable shell 3. The positioning hook 302 is a C-shaped curved hook structure. The outer ring fixing member 9 is a knob 901 with a cylindrical pin structure. Two sets of clearance grooves 902 are provided on the outer side of the middle section of the knob 901. The clearance grooves 902 can guide the positioning hook 302 and the positioning ring 202 to be removably locked, achieving fast and stable locking and unlocking operations.

[0047] With the above structure, when clamping and monitoring the current of a flexible object to be tested, such as an insulating rope or a conductor, the outer ring fixing member 9 is rotated to ensure that the clearance groove 902 of the knob 901 is aligned with the opening of the positioning hook 302 of the fixed shell 2. At this time, the locking state of the movable shell 3 by the outer ring fixing member 9 is released, and then the movable shell 3 is rotated outward to open under the support of the rotating ear 201, so that the movable shell 3 supports the inner ring fixing member 4 and the telescopic frame 5 inside the movable shell 3 to open outward. Then, the flexible object to be tested is placed between the fixed shell 2 and the two sets of telescopic frames 5 inside the movable shell 3. The movable shell 3 is reset again and the knob 901 is rotated to lock the positioning hook 302, thereby realizing the outer ring locking action of the movable shell 3 on the fixed shell 2. ; Then, the frame 6 is pushed to drive the synchronous rack 7 and the holder 8 to move laterally toward the flexible object to be measured, and the frame 6 is changed to be clamped between the two sets of constraint bars 10 at different positions, so as to use the support section 801 at the outer end of the holder 8 to support the flexible object to be measured, ensuring that the object to be measured in the monitoring area is in a straight state, avoiding magnetic field distribution distortion due to bending, and ensuring that the magnetic flux lines in the jaws are evenly distributed; while pushing the frame 6 to move laterally toward the object to be measured, the synchronous rack 7 pushes the gear ring 406 to drive the synchronous half rings 405 of the two sets of inner ring fixing parts 4 to rotate, and the synchronous half ring 405 drives the inner ring slider 401 to support the hoop plate 402 to rotate along the inner ring groove 13, so as to fix one end of the hoop plate 402 on the inner side of the shell 2 The movable shell 3 is rotated into the movable shell 3, and at the same time, one end of the hoop plate 402 on the inner side of the movable shell 3 is rotated into the fixed shell 2, and then the inner rings of the movable shell 3 and the fixed shell 2 are locked by using two sets of synchronously rotating hoop plates 402, thereby enhancing the connection rigidity of the two shells and suppressing the influence of external vibration or loose closure of the jaws on the monitoring data; while the hoop plate 402 rotates, the telescopic frame 5 rotates synchronously with the inner ring fixing part 4, and since the guide rod 504 of the telescopic frame 5 extends into the guide groove 12 in an inclined state, the guide rod 504 moves along the inclined direction of the guide groove 12, and then presses the end block 503 to compress the spring 505, and at this time the end block 503 drives the support rod 502 and the clamping head 501 to gradually extend out of the synchronous half ring 4 05, the synchronous half ring 405 is driven to rotate by the lateral pushing action of the synchronous rack 7 by the frame 6, and then the telescopic frame 5 is driven to rotate by the synchronous half ring 405, and the guide rod 504 is used to slide along the guide groove 12 to extend the clamping head 501 synchronously, so that while the fixed shell 2 and the movable shell 3 are rotated and locked by the inner ring fixing member 4, the clamping head 501 is automatically extended by the support rod 502 to clamp the object to be tested in the monitoring area of the fixed shell 2 and the movable shell 3, so as to realize the concentric positioning action of the object to be tested in the monitoring area and the full-circle jaws, and ensure that the two ends of the flexible object to be tested are tightened and straightened by the support segments 801 of the four sets of retaining frames 8, so as to ensure that the magnetic flux lines in the area to be tested can be evenly distributed;

[0048] When it is necessary to remove the frame 6 and the retaining frame 8 in order to clamp and monitor the hard object to be tested (such as an insulating rod), the base 101 of the detector body is separated from the hook 203 of the fixed shell 2, and then the frame 6 clamped between the two adjacent sets of constraint bars 10 is pulled outward to disengage, and then the frame 6 is used to drive the synchronous rack 7 and the retaining frame 8 to be quickly removed from the full-circular jaws, and then the detector body is reset and installed on the outside of the fixed shell 2. At this time, the frame 6, synchronous rack 7 and retaining frame 8 that serve as supporting accessories for the flexible object to be tested are quickly removed, and then the hard object to be tested can be clamped and monitored separately without using the retaining frame 8 to support it.

[0049] By providing a detachable frame 6 as a support structure for the holder 8, and utilizing the holder 8 extending in the direction of the object to be measured as a support and straightening structure for the monitoring section, the monitoring section can be expanded and straightened outward when monitoring flexible objects such as insulating ropes, thereby preventing magnetic field distortion caused by bending of the object to be measured at both ends of the clamping head 501, thereby ensuring measurement accuracy;

[0050] In addition, a synchronization rack 7 is used to synchronize the lateral adjustment of the frame 6 to the holder 8 with the rotation of the synchronization half ring 405. When the holder 8 is moved laterally to clamp the two ends of the object to be measured, the hoop plate 402 is synchronously pushed to rotate. The inner ring is locked by using the two sets of semi-annular hoop plates 402, thereby improving the connection stability of the fixed shell 2 and the movable shell 3, thereby ensuring the closing stability of the jaws and avoiding external magnetic field interference.

[0051] When the hoop plate 402 is rotated to lock the inner ring of the movable shell 3 and the fixed shell 2, the telescopic frame 5 rotates synchronously with the inner ring fixing part 4, and uses the inclined extended guide groove 12 to press the guide rod 504, thereby pushing the support rod 502 to drive the clamping head 501 to extend outward, and simultaneously realizing the centering clamping action of the clamping head 501 on the outer circumference of the object to be measured. There is no need to lock the monitoring section of the object to be measured separately, so the object to be measured is kept in the center, avoiding magnetic field deviation and ensuring the accuracy of the reading.

[0052] A holder 8 is installed on the outside of the frame 6 along the extension direction of the object to be measured. A rigid support section 801 extends from the outer end of the holder 8. By pushing the frame 6 to move horizontally, the support section 801 serves as the support structure of the monitoring section of the object to be measured, eliminating the magnetic field distribution distortion caused by the bending of the monitoring section, and ensuring that the magnetic flux lines in the jaws are uniform; the horizontal movement of the frame 6 is transmitted to the gear ring 406 through the synchronous rack 7, driving the synchronous half ring 405 of the two sets of inner ring fixing parts 4 to rotate. This transmission mechanism synchronizes the straightening action of the holder 8 with the locking of the inner ring to avoid The clamping is loosened due to the step-by-step operation; the synchronous half ring 405 drives the hoop plate 402 to rotate, so that the arc-shaped hoop plates 402 on the inner side of the fixed shell 2 and the movable shell 3 are staggered and engaged to form a continuous closed inner ring. This design enhances the connection rigidity of the two shells and suppresses the influence of external vibration or loose closure of the jaws on the monitoring data; the guide rod 504 of the telescopic frame 5 is embedded in the inclined extending guide groove 12. When the hoop plate 402 rotates, the guide rod 504 slides along the groove wall to generate axial displacement, pressing the spring 505 and pushing the support rod 502 to extend outward. This mechanical conversion linearizes the rotational motion into a radial extension movement of the clamping head 501. The clamping heads 501 of the two sets of telescopic frames 5 simultaneously approach the surface of the object to be tested, forming a symmetrical clamping force on both sides, forcing the object to be tested to automatically position at the geometric center of the jaws, ensuring that the object to be tested is concentric with the magnetic flux detection area; when the frame 6 is removed, the synchronous rack 7 and the retaining frame 8 are detached as an integral accessory, leaving only the basic clamping structure of the fixed shell 2 and the movable shell 3, which can quickly switch to the monitoring mode of the hard object to be tested.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An insulating rope and rod leakage current monitoring device, characterized by: The monitor comprises a monitor body (1), wherein the outer side of the monitor body (1) is provided with a fixed shell (2) and a movable shell (3) with openings facing each other and both in the shape of a semicircle, wherein the fixed shell (2) and the movable shell (3) are combined to form a detachable full-circle jaw, and the monitor body (1) is fixed to the outside of the fixed shell (2), and the inner sides of the fixed shell (2) and the movable shell (3) are both provided with inner ring fixing members (4), and the middle part of the two sets of inner ring fixing members (4) is provided with a telescopic frame (5) that can be adjusted along the radial direction of the full-circle jaw; Two groups of transversely symmetrically distributed frames (6) are provided on the outside of the fixed shell (2) and the movable shell (3), and retaining frames (8) extending axially along the full-circular jaws are provided on the front and rear sides of the two groups of frames (6). The outer ends of the retaining frames (8) are bent inward to form a support section (801) of an arc-shaped bent rod. Multiple groups of constraint bars (10) supporting the transverse position of the frames (6) are provided on the outside of the fixed shell (2) and the movable shell (3), and the constraint bars (10) are used to adjust the transverse position of the frames (6) to change the spacing between the end support sections (801) of the two groups of retaining frames (8) on the same end face of the full-circular jaws.

2. The device for monitoring leakage current of an insulating rope and a rod according to claim 1, characterized in that: The fixed shell (2) and the movable shell (3) each include two groups of half shells symmetrically distributed front and back. Annular retaining edges (14) are provided at the inner edges of the half shells of the fixed shell (2) and the movable shell (3). Inner ring grooves (13) are formed between the front and rear retaining edges (14) inside the fixed shell (2) and the movable shell (3). The inner ring grooves (13) are used to support the inner ring fixing member (4) to rotate with the full-circle jaw axis as the center.

3. The device for monitoring leakage current of an insulating rope and a rod according to claim 2, characterized in that: The inner ring fixing member (4) includes an inner ring slider (401) arranged on the inner side of the inner ring groove (13), a hoop plate (402) sliding along the outer wall of the retaining edge (14) is fixed on the outer side of the inner ring slider (401), the hoop plate (402) is an arc-shaped plate that fits the outer wall of the retaining edge (14), and a synchronization half ring (405) is fixed on the inner side of the inner ring slider (401), the synchronization half ring (405) extends out of the end face of the full-circle jaw, and the synchronization half rings (405) of the two groups of the inner ring fixing members (4) are pressed against each other to form a separable circular ring structure.

4. The device for monitoring leakage current of an insulating rope and a rod according to claim 3, characterized in that: An outwardly protruding auxiliary ridge (403) is fixed on the outer end surface of the synchronous half ring (405), and a groove-shaped gripping groove is arranged around the outer circumference of the auxiliary ridge (403). A countersunk hole (404) penetrating the inner ring slider (401) and the synchronous half ring (405) is arranged in the middle section of the hoop plate (402). The telescopic frame (5) includes a support rod (502) that slides into the countersunk hole (404). One end of the support rod (502) that passes through the hoop plate (402) is fixed with an end block (503), and the other end of the support rod (502) is fixed with a clamping head (501).

5. The device for monitoring leakage current of an insulating rope and a rod according to claim 4, characterized in that: The clamping head (501) is a longitudinally extending arc-shaped plate-like structure, and a spring (505) is sleeved on the outer side of the support rod (502) inside the countersunk hole (404) to press against the end block (503), and a guide rod (504) is longitudinally extended through the middle of the end block (503). The inner side walls of the fixed shell (2) and the movable shell (3) are both provided with a guide groove (12) for accommodating the end of the guide rod (504) to extend therein, and the guide groove (12) is loosely matched with the guide rod (504), and the guide groove (12) is inclined away from one end of the guide rod (504) toward the axis of the full-circle jaw.

6. The device for monitoring leakage current of an insulating rope and a rod according to claim 5, characterized in that: The guide groove (12) is evenly provided with a plurality of groups of stop positions (12a) along its extension direction on a side away from the spring (505), and the stop positions (12a) are arc-shaped groove structures for accommodating the end of the guide rod (504) to be clamped therein.

7. The device for monitoring leakage current of an insulating rope and a rod according to claim 3, characterized in that: The outer circumference of the synchronization half ring (405) is provided with a gear ring (406) near the front and rear end surfaces, and the outer sides of the two groups of the frame (6) are fixed with a synchronization rack (7) extending laterally to the outer side of the synchronization half ring (405). The synchronization racks (7) of the two groups of the frame (6) are staggered up and down, and the synchronization racks (7) are meshed with the gear ring (406) of the synchronization half ring (405).

8. The device for monitoring leakage current of an insulating rope and a rod according to claim 7, characterized in that: A sliding frame (11) is provided on the outside of the fixed shell (2) and the movable shell (3). The sliding frame (11) is used to support the synchronous rack (7) to drive the frame (6) and the retaining frame (8) to move horizontally.

9. The device for monitoring leakage current of an insulating rope and a rod according to claim 1, characterized in that: A rotating ear (201) is provided on the bottom side of the fixed shell (2), and a rotating seat (301) is provided on the bottom side of the movable shell (3). The rotating seat (301) cooperates with the rotating ear (201) to form a rotating member that supports the opening and closing of the full-circular jaws. Two groups of longitudinally arranged positioning rings (202) are provided on the top side of the fixed shell (2), and outer ring fixing members (9) are rotatably provided in the middle of the two groups of positioning rings (202).

10. The insulating rope and rod leakage current monitoring device according to claim 9, characterized in that: The top side of the movable shell (3) is provided with a positioning hook (302) that can be extended between the two groups of positioning rings (202), and the positioning hook (302) is a C-shaped hook structure. The outer ring fixing member (9) is a knob (901) with a cylindrical pin structure, and two groups of clearance grooves (902) are provided on the outer side of the middle section of the knob (901), and the clearance grooves (902) are used to guide the positioning hook (302) and the positioning ring (202) to be detachably locked.

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