A transformer test line intelligent remote control disconnection device

Abstract

This invention discloses an intelligent remote-controlled disassembly and reassembly device for transformer test leads, belonging to the field of power equipment and materials. It solves the problem of inconvenient disassembly of transformer test leads in existing technologies. The technical solution includes a clamping component, a remote controller, and a retractable insulated operating rod. The clamping component includes a base, a conductive first clamp, and a conductive second clamp. The first and second clamps are slidably mounted on both sides of the base to form a clamping opening. The insulated operating rod has a clamping part and a driving component. The clamping part is used to clamp and fix the base. After the clamping part clamps and fixes the base, the remote controller wirelessly connects to the driving component to control its operation. The driving component drives the first clamp to move relative to the second clamp to open and close the clamping opening. This invention makes disassembly of transformer test leads much more convenient.

Description

Technical Field

[0001] This invention relates to the field of power equipment and materials, and in particular to an intelligent remote control disconnection and reconnection device for transformer test lines. Background Technology

[0002] In current main transformer maintenance and testing, the disassembly and assembly of test wiring heavily relies on repeated manual climbing operations: because multiple insulation and characteristic tests need to be completed sequentially, operators must climb to the top of the bushing, which is 10 meters high, multiple times to manually disconnect and assemble the wiring. This not only significantly extends the operation time and severely encroaches on the power outage maintenance window, but also makes it difficult for traditional large-scale climbing equipment to adapt to the increasingly compact substation layout and the safety distance requirements of nearby live equipment, resulting in time-consuming on-site setup and prominent safety hazards. In addition, long-term high-altitude precision work puts a huge burden on the physical and mental strength of personnel, and is very likely to cause operational errors due to fatigue. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent remote control disconnection and reconnection device for transformer test lines, which solves the problem of inconvenient disassembly in the prior art and makes disassembly more convenient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent remote control disconnection and reconnection device for transformer test lines, comprising a clamping component, a remote controller, and a retractable insulating operating rod. The clamping component includes a base, a conductive first clamp, and a conductive second clamp. The first and second clamps are slidably mounted on both sides of the base to form a clamping opening. The insulating operating rod is provided with a clamping part and a driving component. The clamping part is used to clamp and fix the base. After the clamping part clamps and fixes the base, the remote controller wirelessly connects to the driving component to control the operation of the driving component. The driving component drives the first clamp to move relative to the second clamp to realize the opening and closing of the clamping opening.

[0005] After adopting the above technical solution, the present invention has the following advantages: First, the use of an insulated operating rod can effectively block the current conduction path and ensure the safety of ground operators from electric shock; second, by clamping and fixing the base and operating rod together with the clamping part, the shaking generated when the drive component drives the first gripper can be reduced, improving the stability of the clamping action; third, the insulated operating rod has a telescopic adjustment function, which can adapt to the differences in equipment height in different substations. During operation, the device only needs to be fixed to the end of the insulated operating rod through the clamping part, and ground personnel can remotely control the opening and closing of the clamp via remote control to realize the automatic clamping and disassembly of the test line, eliminating the process of repeatedly setting up and climbing equipment manually, greatly reducing the operation time of disconnecting and reconnecting the wires, freeing up valuable power outage maintenance windows, making disassembly more convenient, while minimizing the risks of working at height, reducing physical exertion and psychological pressure on personnel, and reducing operational errors caused by fatigue. The device has a compact overall structure, requires no large equipment to be brought on site, has low requirements for working space, can adapt to the compact layout of substations, and is more likely to meet the safety distance requirements of nearby live equipment, reducing the difficulty and time of on-site layout, and comprehensively improving the safety and efficiency of main transformer maintenance, testing, wiring and disassembly operations.

[0006] Furthermore, the base is provided with a drive engagement part for connecting to the drive component and a positioning part for clamping by the clamping part. The drive engagement part is connected to the first gripper via transmission, and the relative positions of the drive engagement part and the positioning part on the base are fixed.

[0007] By adopting the aforementioned technical solution, the relative positions of the drive mating part and the positioning part on the base are fixed, so that the operators only need to align the clamping part and clamp the positioning part on site to simultaneously complete the alignment and connection of the drive component and the drive mating part. There is no need to repeatedly align and fine-tune the drive connection part separately, which reduces the difficulty of docking and alignment of the drive component and the drive mating part and improves the efficiency of on-site assembly and docking of the device.

[0008] Furthermore, the base is provided with a lead screw and a nut connected to the lead screw. The nut is fixedly connected to the first gripper, and the lead screw is driven to drive the drive engagement part to achieve a drive connection between the drive engagement part and the first gripper.

[0009] By adopting the aforementioned technical solution, the lead screw and the drive mating part are connected by transmission, and the nut and the first gripper are fixedly connected. This can smoothly convert the rotational motion of the drive component into the linear sliding motion of the first gripper, making the transmission process more precise and allowing for more accurate control of the opening and closing size of the clamp. At the same time, the lead screw and nut transmission has a self-locking characteristic, which can reliably maintain the clamping state of the first gripper after the drive component stops operating, minimizing the possibility of the test wires becoming loose or falling off during the clamping process and ensuring the stability of the test wiring connection.

[0010] Furthermore, the drive engagement part is located on the side of the base away from the clamping opening, and the base is also provided with a transmission shaft arranged perpendicular to the lead screw. The lead screw and the transmission shaft are respectively provided with a first bevel gear and a second bevel gear that mesh with each other, and the transmission shaft and the drive engagement part are fixedly connected.

[0011] By adopting the aforementioned technical solution, the drive mating part is set on the side of the base away from the clamp, so as to avoid interference between the drive connection part and the test line and wiring terminal at the clamp as much as possible, and to ensure sufficient wiring space without affecting the safety of the conductive connection. By setting a transmission shaft perpendicular to the lead screw on the base, and using the meshing of the first bevel gear and the second bevel gear to achieve transmission, the power input by the drive mating part can be transmitted in a 90° direction. While meeting the requirements of external arrangement of the drive component, the overall structural layout is optimized, making the axial dimension of the device more compact and better adaptable to narrow working spaces.

[0012] Furthermore, the driving component includes an electric wrench, and the driving mating part is provided with a transmission groove adapted to the output end of the electric wrench.

[0013] The above technical solution allows the use of a mature and universal electric wrench as a power source, eliminating the need for specially designed and customized drive motors and supporting structures. This reduces the overall R&D and manufacturing costs of the device. The transmission groove is compatible with the output end of the electric wrench, enabling quick insertion and connection between the drive components and the drive mating parts. The alignment is convenient and the connection is firm. No additional adapter components are required during operation, which not only improves on-site assembly efficiency but also ensures that the power transmission process does not slip or fall off.

[0014] Furthermore, the base is also provided with a voice prompt device and a trigger button for controlling the operation of the voice prompt device. The trigger button is movably mounted in the transmission groove. The trigger button has an extension position that protrudes from the opening of the transmission groove in its natural state, and a clearance position that retracts into the transmission groove after being pressed by the output end of the electric wrench. When the trigger button moves from the extension position to the clearance position, it triggers the voice prompt device to broadcast a preset connection confirmation voice.

[0015] The above technical solution enables the operator to be intuitively notified via voice that the drive connection has been reliably connected after the output end of the electric wrench is inserted into the transmission slot. This minimizes the risk of transmission failure or slippage caused by poor visual observation, misalignment, or improper insertion. At the same time, it eliminates the need for operators to make additional judgments or checks on the connection status, reducing blind spots and difficulty in confirmation during remote high-altitude operations, and improving the accuracy and convenience of on-site connection operations.

[0016] Furthermore, the base is provided with an elastic element and a locking element movably mounted on the base. The elastic element is connected between the second gripper and the base and is configured to apply an elastic force to the second gripper to move it away from the first gripper. The locking element has a locked position and an unlocked position under the action of external force. When the locking element is in the locked position, the locking element blocks the movement of the second gripper, so that the second gripper overcomes the elastic force and remains in a preset working position. When the locking element is in the unlocked position, the locking element releases the obstruction of the second gripper, and the second gripper moves from the working position to a release position away from the first gripper under the action of the elastic force.

[0017] With the above technical solution, when the locking component is in the locked position, the second gripper can be fixed in the preset working position to ensure a stable clamping force with the first gripper, ensuring reliable contact of the test line and preventing loosening; when it is necessary to remove the test line, simply switch the locking component to the unlocked position, and the second gripper can automatically and quickly move away from the first gripper under the action of the elastic component, so that the clamping jaws open instantly to release the test line, without relying on external force to achieve loosening, thus achieving rapid unlocking.

[0018] Furthermore, the locking member is rotatable relative to the base and has a long side and a short side. When the long side of the locking member is rotated to abut against the second gripper, it is in the locked position, or when the short side is abut against the second gripper, it is in the unlocked position.

[0019] The above technical solution uses rotation to alternately press the long and short sides against the second gripper to switch between locked and unlocked positions. On the one hand, the structure is simple and reliable, relying solely on rotation and geometric dimensional differences to achieve locking and releasing, without the need for complex linkages or electronic control components. It is easy to process and assemble, and is less prone to jamming. On the other hand, when the long side presses against the second gripper, it can stably block the second gripper, ensuring a firm and reliable clamping position. When the short side presses against the second gripper, it releases the blockage. The switching action is clear and intuitive, and the operation is simple. The state switch can be completed by rotating to the correct position, without any ambiguous state of partial locking or unlocking.

[0020] Furthermore, the base is also provided with an unlocking component for rotating the locking component. The unlocking component includes an insulating rod protruding from the surface of the base or an electric actuator provided on the base.

[0021] With the above technical solutions, when using an insulating rod protruding from the base surface, operators can indirectly operate it from the ground using a retractable insulating operating rod to achieve mechanical unlocking and locking without relying on electricity. It can still work stably in complex on-site conditions such as power outages and dampness, and the insulation structure further ensures operational safety. When using an electric actuator mounted on the base, it can be used with a remote control to achieve remote automatic control of the rotation of the locking parts without manual mechanical operation, further reducing on-site operation steps and improving automation and work efficiency.

[0022] Furthermore, the base is also provided with a limiting part, which is located on the movement path of the first gripper and the second gripper to limit the distance between them.

[0023] The above technical solution can reliably limit the minimum distance between the two grippers, and avoid damage, deformation or cracking of test leads and terminals due to excessive clamping, thus ensuring the integrity of test wiring and electrical equipment. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the intelligent remote control disconnection and reconnection device for transformer test lines of the present invention.

[0026] Figure 2 This is a cross-sectional view of the intelligent remote control disconnection and reconnection device for transformer test lines of the present invention.

[0027] Figure 3 This is a partial structural schematic diagram of the intelligent remote control disconnection and reconnection device for transformer test lines of the present invention.

[0028] Figure 4 This is a partial structural schematic diagram of the intelligent remote control disconnection and reconnection device for transformer test lines of the present invention from another perspective.

[0029] In the figure, 10 is the insulating operating rod; 11 is the clamping part; 12 is the unlocking part; 20 is the clamping part; 21 is the base; 22 is the first gripper; 23 is the second gripper; 24 is the drive mating part; 25 is the lead screw; 26 is the nut; 27 is the transmission shaft; 28 is the first bevel gear; 29 is the second bevel gear; 30 is the clamping jaw; 31 is the elastic element; 32 is the locking element; 33 is the limiting part; 34 is the positioning part; 35 is the driving element; 40 is the contact plate; and 50 is the wire. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0032] It should be understood that in the various embodiments of the present invention, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0033] It should be understood that in this invention, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0034] It should be understood that in this invention, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0035] The technical solution of the present invention will be described in detail below with reference to specific embodiments. The following specific embodiments may be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0036] like Figures 1 to 4As shown, the present invention provides an intelligent remote control disconnection and reconnection device for transformer test lines, including a clamping component 20, a remote controller, and a retractable insulating operating rod 10. The clamping component 20 includes a base 21, a conductive first clamping claw 22, and a conductive second clamping claw 23. The first clamping claw 22 and the second clamping claw 23 are slidably mounted on both sides of the base 21 to form a clamping opening 30. The insulating operating rod 10 is provided with a clamping part 11 and a driving component 35. The clamping part 11 is used to clamp and fix the base 21. After the clamping part 11 clamps and fixes the base 21, the remote controller wirelessly connects to the driving component 35 to control the operation of the driving component 35. The driving component 35 drives the first clamping claw 22 to move relative to the second clamping claw 23 to realize the opening and closing of the clamping opening 30.

[0037] First, the use of an insulated operating rod 10 effectively blocks the current conduction path, ensuring the safety of ground operators from electric shock. Second, by clamping and fixing the base 21 to the operating rod via the clamping part 11, the shaking generated when the drive component 35 drives the first gripper 22 during operation is reduced, improving the stability of the clamping action. Third, the insulated operating rod 10 has a telescopic adjustment function, which can adapt to the differences in equipment height in different substations. During operation, the device only needs to be fixed to the end of the insulated operating rod 10 via the clamping part 11, and ground personnel can remotely control the opening and closing of the clamp 30 via a remote control to realize the automatic clamping and disassembly of the test line. This eliminates the process of repeatedly setting up and climbing equipment manually, significantly reducing the operation time of disconnecting and disconnecting the wires, freeing up valuable power outage maintenance windows, making disassembly more convenient, while minimizing the risks of working at height, reducing physical exertion and psychological pressure on personnel, and reducing operational errors caused by fatigue. The device has a compact overall structure, requires no large equipment to be brought on site, has low requirements for working space, can adapt to the compact layout of substations, and is more likely to meet the safety distance requirements of nearby live equipment, reducing the difficulty and time of on-site layout, and comprehensively improving the safety and efficiency of main transformer maintenance, testing, wiring and disassembly operations.

[0038] It should be noted that the clamping component 20 is not only used for testing leads, but also for clamping bushings and transformer contact plates 40. Operators can operate the insulated operating rod 10 to achieve 360-degree axial horizontal rotation and 180-degree radial pitch swing, allowing the clamping component 20 to flexibly adjust its posture in three-dimensional space to adapt to bushings of different manufacturers, models, and layouts. The clamping component 20 is connected to the main body of the testing equipment via a wire 50.

[0039] To facilitate the connection between the drive engagement part 24 and the first gripper 22, the base 21 is provided with a drive engagement part 24 for connecting the drive component 35 and a positioning part 34 for clamping the clamping part 11. The drive engagement part 24 is connected to the first gripper 22 in a transmission manner. The relative positions of the drive engagement part 24 and the positioning part 34 are fixed on the base 21, so that the operator only needs to align the clamping part 11 and clamp the positioning part 34 on site to simultaneously complete the alignment and connection of the drive component 35 and the drive engagement part 24. There is no need to repeatedly align and fine-tune the drive connection part separately, which reduces the difficulty of docking and aligning the drive component 35 and the drive engagement part 24 and improves the efficiency of on-site assembly and docking of the device.

[0040] It should be noted that the positioning part 34 adopts an asymmetrical irregular boss structure, and its surface is provided with a guide slope or anti-fooling notch at a specific angle, so that the external clamping part 11 can only be inserted into and locked into the positioning part 34 according to the only correct orientation and angle. If the orientation is deviated, physical clamping cannot be completed. Since the relative position of the clamping part 11 and the output end of the drive member 35 is fixed, when the operator pushes the clamping part 11 along the guide slope or anti-fooling notch and locks it into the positioning part 34, the spatial posture of the clamping part 11 is forcibly limited to a unique and determined position, thereby driving the entire drive member 35 to move to the preset position, so that the output end of the drive member 35 automatically and accurately connects to the drive mating part 24 on the base 21.

[0041] The drive component 35 includes an electric wrench, which can directly use a mature and universal electric wrench as a power source. There is no need to design and customize a drive motor and supporting structure, which reduces the overall R&D and manufacturing cost of the device. The drive mating part 24 is provided with a transmission groove that is compatible with the output end of the electric wrench, which can realize quick plug-in docking between the drive component 35 and the drive mating part 24. The alignment is convenient and the connection is firm. No additional adapter components are needed during operation, which can improve the efficiency of on-site assembly and ensure that the power transmission process does not slip or fall off.

[0042] Since the working area is far from the ground, it is difficult to visually confirm whether the electric wrench and the transmission groove are connected in place. Therefore, in this application, the base 21 is also equipped with a voice prompt device and a trigger button for controlling the operation of the voice prompt device. The trigger button is installed at the bottom of the transmission groove by compression spring, so that it has two distinct working states: the extended position in the natural state and the yielding position in the compressed state. In the natural state, the top of the trigger button is pushed upward under the action of elastic force, and its height is significantly higher than the groove opening plane or at the groove edge. When the output end of the external electric wrench, such as the socket or drive head, is inserted into the transmission groove for docking, the end face of the output end will first contact and press down on the trigger button, overcoming the elastic resistance of the compression spring and pressing it into the transmission groove, so that it moves from the extended position to the yielding position, thereby making room for the complete insertion of the output end of the electric wrench. In terms of circuit connection, the trigger button also serves as the control switch of the voice prompt device, and a micro switch contact is provided at the end of its stroke or at a specific compression position. The microswitch will only close and conduct when the output end of the electric wrench is inserted deep enough to fully press the trigger button into the clearance position. This triggers the voice prompt, which will then broadcast a preset connection confirmation message, such as "Connection successful." If the electric wrench is inserted too deeply, tilted, or not fully engaged, the trigger button will not be pressed to its trigger stroke, and the voice prompt will remain silent. This transforms the abstract concept of a successful connection into a direct auditory signal. Operators no longer need to climb close or rely on distant vision to observe minute alignment gaps; they only need to listen to the voice feedback while remotely controlling the electric wrench to press down. Once the confirmation message is heard, it proves that the output end of the electric wrench and the transmission slot are properly connected. This minimizes the risk of misjudgment due to blind spots, effectively prevents transmission slippage or equipment detachment accidents caused by false connections, and significantly improves the safety and operational efficiency of high-altitude live-line work.

[0043] A lead screw 25 is rotatably mounted axially inside the base 21. Both ends of the lead screw 25 are supported and fixed to the sidewalls of the base 21 by deep groove ball bearings to ensure the stability of the rotation center. A nut 26 is threaded onto the lead screw 25 and rigidly fixed to the first gripper 22, preventing the nut 26 from rotating with the lead screw 25 and allowing it to reciprocate linearly along the axial direction of the lead screw 25. When the drive component 35 drives the drive mating part 24 to rotate, power is transmitted to the lead screw 25. Utilizing the helical transmission principle of the lead screw and nut pair, the rotational motion of the drive component 35 is precisely converted into the linear sliding motion of the first gripper 22, thereby achieving more precise control over the opening and closing dimensions of the clamp 30. In addition, by utilizing the self-locking characteristic of the lead screw 25, when the drive component 35 stops operating or is de-energized, the friction angle between the threads is greater than the helix angle, which can generate a mechanical self-locking effect, so that the first gripper 22 can be reliably held in the current clamping position, and prevent the test line from loosening or falling off due to vibration or gravity as much as possible, ensuring the absolute stability of the high-altitude wiring connection.

[0044] To solve the spatial interference problem and optimize the layout, the drive mating part 24 is located on the side of the base 21 away from the clamp 30, that is, the clamp 30 is located on the front side of the base 21 and the drive mating part 24 is located on the rear side of the base 21. This avoids the dense test lines and wiring terminals in front of the clamp 30 as much as possible, eliminates the physical interference of the drive connection parts to the conductive operation, and ensures sufficient wiring operation space and electrical safety distance.

[0045] To achieve efficient power transmission from the rear-mounted input to the axial lead screw 25, a right-angle reversing transmission mechanism is also installed inside the base 21. Specifically, a drive shaft 27 is vertically arranged between the drive engagement part 24 and the lead screw 25. One end of the drive shaft 27 is coaxially and fixedly connected to the drive engagement part 24, and the other end extends into the base 21 and is arranged at a 90-degree angle to the lead screw 25. In the meshing area between the drive shaft 27 and the lead screw 25, a first bevel gear 28 is fixedly mounted at the end of the drive shaft 27, and a second bevel gear 29 is fixedly mounted at the corresponding position on the lead screw 25. The two mesh with each other. When the drive engagement part 24 receives external power and rotates, it drives the drive shaft 27 and the first bevel gear 28 to rotate. Through gear meshing, the rotational torque is redirected 90 degrees to the second bevel gear 29, thereby driving the lead screw 25 to rotate. This structure not only successfully achieves spatial reversing transmission of power, allowing the drive device to be externally arranged to reduce the front-end volume, but also compresses the axial dimension of the device, making its overall structure more compact and better adaptable to the restricted high-altitude working environment.

[0046] In addition to adjusting the opening and closing of the jaws 30 by driving the first gripper 22, this embodiment also includes an elastic reset and mechanical locking release mechanism based on the second gripper 23. Specifically, the base 21 is provided with an elastic element 31 and a locking element 32 movably mounted on the base 21. The elastic element 31 can be a spring, with one end connected to the base 21 and the other end connected to the second gripper 23. Its preload is configured to always apply an elastic restoring force to the second gripper 23, causing it to move away from the first gripper 22, thus giving the second gripper 23 a tendency to move towards the release position. The locking element 32 can switch between a locked position and an unlocked position under the action of an external driving force: when the locking element 32 is in the locked position, its structural body physically blocks the first gripper 23. The movement path of the second gripper 23 forces the second gripper 23 to overcome the elastic force of the elastic element 31 and remain stably in the preset working position. At this time, the first gripper 22 and the second gripper 23 cooperate to form a closed state to hold the test line. When the locking element 32 is driven by external force to move to the unlocking position, its blocking effect on the second gripper 23 is released. Under the action of the elastic potential energy stored in the elastic element 31, the second gripper 23 quickly and automatically bounces back from the working position to the release position away from the first gripper 22, so that the clamp 30 opens instantly and releases the test line, realizing rapid unlocking.

[0047] Specifically, the locking element 32 is rotatably mounted on the base 21. Its cross-section or contour is a non-circular structure, such as an elliptical block, clearly defining the long side with a larger radial dimension and the short side with a smaller radial dimension. The operator can switch states by rotating the locking element 32 and utilizing the change in its geometric contour: when rotated until the long side abuts against or engages with the limiting surface of the second gripper 23, the locking element 32 is in the locked position. The larger radial dimension of the long side is sufficient to stably block the retraction movement of the second gripper 23, ensuring a firm and reliable clamping state; when rotated until the short side turns and corresponds to the second gripper 23, the locking element 32 is in the unlocked position. The smaller radial dimension of the short side clears the movement path of the second gripper 23, thereby releasing the obstruction. This eliminates the need for complex linkage mechanisms or electronic control components, making processing and assembly convenient and reducing the likelihood of mechanical jamming failures. On the other hand, the state switching logic between the long and short sides is clear and the boundaries are distinct. The operator only needs to rotate the element to the correct position to complete the state change, minimizing the possibility of a half-locked and half-unlocked ambiguous state in traditional structures and ensuring the determinism of the action.

[0048] Furthermore, the base 21 also integrates an unlocking component 12 for rotating the locking component 32. The unlocking component 12 includes an insulating rod protruding from the outer surface of the base 21. In high-altitude operation scenarios, operators do not need to climb to the equipment; they can simply use a standard retractable insulating rod on the ground to remotely rotate the internal locking component 32, achieving mechanical locking and unlocking switching. Alternatively, a lifting device can be used to operate the insulating rod directly by hand. It does not rely on an external power supply and can operate stably even under complex and harsh conditions such as power outages, high humidity, or heavy rain. Simultaneously, the insulating rod effectively isolates high-voltage potential, further ensuring the personal safety of operators.

[0049] In addition, a limiting part 33 is provided on the base 21. This limiting part 33 is fixedly disposed on the relative movement path of the first gripper 22 and the second gripper 23 to limit the minimum limit distance between them. When the grippers are closed, the limiting part 33 acts as a rigid stop point to prevent excessive clamping force due to over-driving or control errors. This minimizes the risk of damage to the insulation layer of the test leads, deformation or even cracking of the terminals, and ensures the structural integrity and electrical safety of the test wiring and the electrical equipment under test. When the locking member 32 is in the locked position, the second gripper 23 abuts against the limiting part 33.

[0050] Method 1: The first gripper 22 is electrically driven for locking and unlocking.

[0051] Locking procedure: First, align the clamping part 11 at the end of the insulating operating rod 10 with the positioning part 34 of the base 21 and push it in to lock until you hear the voice prompt announce successful docking, confirming that the electric wrench and the drive engagement part 24 are connected in place. Then, extend the insulating operating rod 10 and rotate and tilt it to precisely align the clamping jaw 30 with the test lead or contact plate 40 to be clamped. Then, press the remote control's closing command to drive the electric wrench to rotate forward, which in turn drives the lead screw 25 to rotate via the bevel gear, pushing the first clamp 22 to move towards the second clamp 23. When the first clamp 22 contacts the limiting part 33, it automatically stops, using the self-locking characteristic of the lead screw 25 to firmly lock the test lead within the clamping jaw 30, without the need for continuous power supply.

[0052] Unlocking steps: Press the "Open" command on the remote control to drive the electric wrench to reverse, causing the lead screw 25 to rotate in the opposite direction. Then, the first gripper 22, driven by the lead screw 25, retracts axially in a straight line, moving away from the second gripper 23, and the clamp 30 opens to its maximum stroke. After confirming that the clamp 30 is fully open, move the insulating operating rod 10 to disengage the device from the test lead, and retract the insulating operating rod 10 to complete the disassembly.

[0053] Method 2: Mechanical elastic locking and unlocking steps for the second gripper 23.

[0054] When locking, the operator rotates the insulating operating rod 10 on the base 21, which drives the internal locking member 32 to rotate, so that the long side of the locking member 32 rotates to abut against the second gripper 23. Once it is confirmed that the long side has physically blocked the second gripper 23 from retracting, the elastic force is overcome, and the second gripper 23 is stably locked in the working position, forming a closed clamp 30 with the first gripper 22.

[0055] Unlocking procedure: The operator rotates the insulating operating rod 10 on the base 21, causing the locking member 32 to rotate, so that the short side of the locking member 32 rotates to the position corresponding to the second gripper 23, releasing the obstruction to the second gripper 23. Under the action of the elastic member 31, the second gripper 23 instantly springs from the working position to the release position, the clamp 30 quickly opens, the test line automatically falls off, and the unlocking is achieved quickly.

[0056] Understandably, in other embodiments, the unlocking component is an electric actuator mounted on the base, which can be used with a remote control to remotely and automatically control the rotation of the locking component without manual mechanical manipulation, further reducing on-site operation steps and improving automation and work efficiency.

[0057] In addition to the preferred embodiments described above, the present invention has other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection claimed by the present invention.

Claims

1. A smart remote control disconnection and reconnection device for transformer test leads, characterized in that, The device includes a clamping component (20), a remote controller, and a retractable insulated operating rod (10). The clamping component (20) includes a base (21), a conductive first clamping claw (22), and a conductive second clamping claw (23). The first clamping claw (22) and the second clamping claw (23) are slidably mounted on both sides of the base (21) to form a clamping opening (30). The insulated operating rod (10) is provided with a clamping part (11) and a driving component (35). The clamping part (11) is used to clamp and fix the base (21). After the clamping part (11) clamps and fixes the base (21), the remote controller wirelessly connects to the driving component (35) to control the operation of the driving component (35). The driving component (35) drives the first clamping claw (22) to move relative to the second clamping claw (23) to realize the opening and closing of the clamping opening (30).

2. The intelligent remote control disconnection and reconnection device for transformer test lines according to claim 1, characterized in that, The base (21) is provided with a drive engagement part (24) for connecting to the drive member (35) and a positioning part (34) for clamping by the clamping part (11). The drive engagement part (24) is connected to the first gripper (22) in a transmission manner. The relative positions of the drive engagement part (24) and the positioning part (34) on the base (21) are fixed.

3. The intelligent remote control disconnection and reconnection device for transformer test lines according to claim 2, characterized in that, The base (21) is provided with a lead screw (25) and a nut (26) connected to the lead screw (25). The nut (26) is fixedly connected to the first gripper (22). The lead screw (25) and the drive engagement part (24) are connected in a transmission manner to realize the transmission connection between the drive engagement part (24) and the first gripper (22).

4. The intelligent remote control disconnection and reconnection device for transformer test leads according to claim 3, characterized in that, The drive engagement part (24) is located on the side of the base (21) away from the clamp (30). The base (21) is also provided with a transmission shaft (27) that is perpendicular to the lead screw (25). The lead screw (25) and the transmission shaft (27) are respectively provided with a first bevel gear (28) and a second bevel gear (29) that mesh with each other. The transmission shaft (27) and the drive engagement part (24) are fixedly connected.

5. The intelligent remote control disconnection and reconnection device for transformer test lines according to claim 2, characterized in that, The drive unit (35) includes an electric wrench, and the drive mating part (24) is provided with a transmission groove adapted to the output end of the electric wrench.

6. The intelligent remote control disconnection and reconnection device for transformer test leads according to claim 5, characterized in that, The base (21) is also provided with a voice prompt device and a trigger button for controlling the operation of the voice prompt device. The trigger button is detachably located in the transmission groove. The trigger button has an extension position that protrudes from the opening of the transmission groove in its natural state, and a clearance position that retracts into the transmission groove after being pressed by the output end of the electric wrench. When the trigger button moves from the extension position to the clearance position, it triggers the voice prompt device to broadcast a preset connection confirmation voice.

7. The intelligent remote control disconnection and reconnection device for transformer test leads according to claim 1, characterized in that, The base (21) is provided with an elastic element (31) and a locking element (32) movably mounted on the base (21). The elastic element (31) is connected between the second gripper (23) and the base (21) and is configured to apply an elastic force to the second gripper (23) to move it away from the first gripper (22). The locking element (32) has a locked position and an unlocked position under the action of external force. When the locking element (32) is in the locked position, the locking element (32) blocks the movement of the second gripper (23), so that the second gripper (23) overcomes the elastic force and remains in a preset working position. When the locking element (32) is in the unlocked position, the locking element (32) releases the obstruction of the second gripper (23), and the second gripper (23) moves from the working position to a release position away from the first gripper (22) under the action of the elastic force.

8. The intelligent remote control disconnection and reconnection device for transformer test lines according to claim 7, characterized in that, The locking member (32) is rotatable relative to the base (21) and has a long side and a short side. When the long side of the locking member (32) is rotated to abut against the second gripper (23), it is in the locked position, or when the short side is abut against the second gripper (23), it is in the unlocked position.

9. The intelligent remote control disconnection and reconnection device for transformer test leads according to claim 8, characterized in that, The base (21) is also provided with an unlocking member (12) for driving the locking member (32) to rotate. The unlocking member (12) includes an insulating rod protruding from the surface of the base (21) or an electric actuator provided on the base (21).

10. The intelligent remote control disconnection and reconnection device for transformer test leads according to claim 7, characterized in that, The base (21) is also provided with a limiting part (33), which is located on the movement path of the first gripper (22) and the second gripper (23) to limit the distance between them.

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