A high-altitude intelligent auxiliary wiring device for electrical testing

Abstract

This invention discloses an intelligent auxiliary wiring device for high-altitude electrical testing, comprising a clamping assembly and a power assembly. The clamping assembly includes a clamp support and a fixed clamp and a movable clamp located on one side of the clamp support. One side of the fixed clamp is fixed to one end of the clamp support. The side of the movable clamp away from the fixed clamp is movably connected to the other end of the clamp support via the power assembly. The power assembly controls the movable clamp to move closer to or away from the fixed clamp, thereby clamping or releasing the test section of the device under test. The other end of the power assembly is used to connect to a telescopic assembly. Along the intersection line of the fixed clamp and the clamp support, the clamping surface of the fixed clamp has a current layer, an insulation layer, and a voltage layer distributed sequentially. The current layer is used to connect to the current line of the test device, and the voltage layer is used to connect to the voltage line of the test device. This invention enables one-time wiring of voltage and current test leads for high-altitude applications from the ground, with high measurement accuracy.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment testing technology, and in particular to an intelligent auxiliary wiring device for high-altitude electrical testing. Background Technology

[0002] Electrical testing is a crucial part of the operation and maintenance of power equipment and one of the effective means to ensure the safe and stable operation of the power system. Conducting electrical tests on equipment is like performing a "physical examination," enabling the timely detection and elimination of defects, preventing equipment accidents, and thus ensuring the safe and stable operation of the power grid.

[0003] During the testing of electrical equipment, test leads need to be connected to the primary side of the equipment. The primary lead side is relatively high off the ground, generally between 4 and 12 meters. Traditional methods mainly include two approaches: manual climbing of the equipment to connect the leads and using an aerial work platform. Traditional methods suffer from problems such as the risk of falls from heights, high labor intensity, long working hours, low efficiency, and high demands on manpower and resources. Currently, there is no effective solution to these problems.

[0004] Traditional working methods mainly have the following problems:

[0005] (1) The risk of falling from height due to manual climbing of wiring:

[0006] When conducting preventative tests on primary equipment such as transformers, switches, current transformers, and voltage transformers, test leads need to be connected to the primary side of the equipment. Because the primary leads are relatively high off the ground (approximately 4-12m), climbing to connect the leads is constrained by factors such as the working height, the insulator's tilt, and the insulator's smoothness, posing a high risk of falls for workers. Furthermore, if poor contact or test failures occur, it is necessary to climb the insulator again to re-grind the leads, which is time-consuming, inefficient, labor-intensive, and carries a high risk of injury.

[0007] (2) When using aerial work platforms, there are high requirements for the working environment and personnel:

[0008] The disadvantages of using aerial work platforms are as follows: First, they require a large amount of space and a suitable working environment. When space and the working environment are limited, the operation becomes difficult, requiring repeated repositioning of the aerial work platform. Second, the safety risk factor is low. Insufficient safety distance from nearby electrical equipment can lead to electric shock, and improper control can cause the truck bed to damage the bushing insulator. Third, they require highly qualified personnel, necessitating drivers with B2 driver's licenses and personnel with special operation certificates. Fourth, large machinery operations require on-site surveys, resulting in high operational risks. The "Guidelines for the Operation of Cranes and Other Large Machinery in Production Sites of China Southern Power Grid Company (Trial Implementation)" stipulates that personnel from this unit or external units should use large machinery (overhead cranes, truck cranes, aerial work platforms, loaders, mixers, pile drivers, excavators, etc.) for various types of on-site work, including major overhauls, technical upgrades, troubleshooting, maintenance, and testing of substations, converter stations, power plants, and transmission and distribution lines. Before the operation, the project construction unit must organize key personnel (including project manager, safety supervisor, supervisor, on-site work manager, crane operator, crane commander, equipment operator, etc.) to conduct a full-process scenario rehearsal against the crane and other large machinery operation plan, and assess whether the risk control measures at each stage are complete and improve them.

[0009] (3) Low efficiency: It requires separate wiring of voltage and current circuits.

[0010] The following tests require separate installation of voltage and current lines, which is time-consuming and inefficient. Examples include: DC resistance tests on transformers, on-load tap changer tests, and circuit resistance tests on switches. Summary of the Invention

[0011] This invention provides an intelligent auxiliary wiring device for electrical testing at high altitudes, which can transform high-altitude operations into ground operations, enabling the one-time connection of voltage and current test leads from the ground to the high altitude.

[0012] The present invention provides an intelligent auxiliary wiring device for high-altitude electrical testing, comprising: a clamping assembly and a power assembly. The clamping assembly includes a clamp support and a fixed clamp and a movable clamp located on one side of the clamp support. One side of the fixed clamp is fixed to one end of the clamp support. The side of the movable clamp away from the fixed clamp is movably connected to the other end of the clamp support through the power assembly. The power assembly is used to control the movable clamp to move closer to or away from the fixed clamp, thereby enabling the clamping assembly to clamp or release the test section of the device under test. The other end of the power assembly is used to connect to a telescopic assembly.

[0013] The clamping surface of the fixed clamp has a current layer, an insulating layer, and a voltage layer distributed sequentially along the intersection line of the fixed clamp and the clamp support. The current layer is used to connect to the current line of the test equipment, and the voltage layer is used to connect to the voltage line of the test equipment.

[0014] Furthermore, the power assembly includes a first rotating rod, one end of which is connected to the movable clamp, the middle part of which passes through the clamp support and is threadedly connected to the clamp support. The first rotating rod is used to drive the movable clamp to move under the action of threaded transmission when it rotates. The other end of the first rotating rod is used to connect to the telescopic assembly.

[0015] Furthermore, the power assembly also includes a second rotating rod, which is disposed on one side of the first rotating rod. One end of the second rotating rod is perpendicularly connected to the middle of the first rotating rod through a power direction conversion component. The power direction conversion component is used to drive the first rotating rod to rotate when the second rotating rod rotates. The other end of the second rotating rod is used to connect to the telescopic assembly.

[0016] Furthermore, the power direction conversion component includes a first bevel gear and a second bevel gear that mesh perpendicularly with each other. The first bevel gear is fixed to the middle part of the first rotating rod, and the second bevel gear is fixed to the end of the second rotating rod that is connected to the first rotating rod.

[0017] Furthermore, the side of the movable clamp away from the fixed clamp is rotatably connected to the first rotating rod, and the side of the movable clamp away from the jaws of the clamp assembly is slidably connected to the clamp support.

[0018] Furthermore, the clamping surfaces of both the fixed clamp and the moving clamp are provided with friction protrusions.

[0019] Furthermore, the clamping surface of the moving clamp is provided with serrated protrusions.

[0020] Furthermore, both the first rotating rod and the second rotating rod are provided with quick-connect fittings for connecting with the telescopic assembly. The surface of the quick-connect fitting is provided with a protrusion, which is used to engage with the recess on the surface of the connector of the telescopic assembly.

[0021] Furthermore, a notch is provided on one side of the quick-connect fitting.

[0022] Furthermore, the clamp assembly is provided with a data acquisition unit and a data transmission unit. The data acquisition unit includes a temperature sensor and an electric field strength sensor. The temperature sensor and the electric field strength sensor are disposed on the fixed clamp and are respectively connected to the data transmission unit. The data transmission unit is used for communication connection with the terminal device.

[0023] As can be seen from the above technical solutions, the present invention has the following advantages:

[0024] (1) Ground personnel use telescopic components to transport clamping components and power components to high altitudes. When the test part of the device under test is located between the fixed clamp and the moving clamp, the power component controls the moving clamp to move closer to the fixed clamp, so that the clamping components hold the test part. When the power component controls the moving clamp to move away from the fixed clamp, the clamping components release the test part. There is no need for manual climbing or using an aerial work vehicle to connect or disconnect test lines.

[0025] (2) The clamping surface of the fixed clamp is distributed with a current layer, an insulation layer and a voltage layer in sequence along the direction of the intersection of the fixed clamp and the clamp support. The current line and voltage line of the test equipment are connected to the fixed clamp. When the fixed clamp is fixed to the test part, the voltage and current circuits are connected at one time.

[0026] (3) Based on the distribution structure of current layer, insulation layer and voltage layer distributed sequentially along the intersection line of fixed clamp and clamp support on the clamping surface, when the operator controls the clamping assembly to clamp the test part, the voltage layer can be conveniently adjusted to be close to the resistor being measured, while the current layer is far away from the resistor being measured, so as to reduce the voltage measurement error and improve the test accuracy. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of an intelligent auxiliary wiring device for high-altitude electrical testing provided in an embodiment of the present invention;

[0029] Figure 2 An assembly diagram of an intelligent auxiliary wiring device and telescopic assembly for high-altitude electrical testing provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal structure of the power component in an intelligent auxiliary wiring device for high-altitude electrical testing, provided in an embodiment of the present invention.

[0031] Figure 4 This is a top view of an intelligent auxiliary wiring device for high-altitude electrical testing provided in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the clamping assembly structure in an intelligent auxiliary wiring device for high-altitude electrical testing provided in an embodiment of the present invention;

[0033] Figure 6This is an assembly diagram of quick-connectors and connectors in an intelligent auxiliary wiring device for high-altitude electrical testing provided in an embodiment of the present invention.

[0034] Figure 7 A schematic diagram of the contact between the fixed clamp and the test section of the device under test in an electrical testing high-altitude intelligent auxiliary wiring device provided in an embodiment of the present invention (the clamped surface of the test section is parallel to the ground).

[0035] Figure 8 This is a schematic diagram of the contact between the fixed clamp and the test section of the device under test in an electrical testing high-altitude intelligent auxiliary wiring device provided in an embodiment of the present invention (the clamped surface of the test section is perpendicular to the ground).

[0036] Explanation of reference numerals in the attached drawings: 1. Clamping assembly; 11. Fixed clamp; 111. Voltage layer; 112. Insulation layer; 113. Current layer; 114. Serrated protrusion; 12. Moving clamp; 121. Friction protrusion; 13. Clamp support; 131. Slide rail; 2. Test section; 3. Measured resistance; 4. Power assembly; 41. First rotating rod; 411. Threaded part; 412. Rotating part; 42. Second rotating rod; 43. Power direction conversion component; 431. First bevel gear; 432. Second bevel gear; 44. Housing; 5. Quick connector; 51. Protrusion; 52. Notch; 6. Piezoelectric multi-core cable; 7. Telescopic assembly; 8. Voltage terminal; 9. Current terminal; 10. Connector. Detailed Implementation

[0037] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0038] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and 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 present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Please see Figures 1 to 8 , Figure 1 An intelligent auxiliary wiring device for high-altitude electrical testing provided in this embodiment of the invention includes a clamping assembly 1 and a power assembly 4. The clamping assembly 1 includes a clamp support 13 and a fixed clamp 11 and a movable clamp 12 located on one side of the clamp support 13.

[0040] One side of the fixed clamp 11 is fixed to one end of the clamp support 13. The side of the movable clamp 12 away from the fixed clamp 11 is movably connected to the other end of the clamp support 13 through the power assembly 4. The power assembly 4 is used to control the movable clamp 12 to move closer to or away from the fixed clamp 11 so that the clamp assembly 1 clamps or releases the test part 2 of the device under test. The other end of the power assembly 4 is used to connect to the telescopic assembly 7.

[0041] The jaws between the fixed clamp 11 and the movable clamp 12 are the part used to clamp the test section 2 of the device under test;

[0042] The clamping surface of the fixed clamp 11 is provided with a current layer 113, an insulating layer 112 and a voltage layer 111 distributed sequentially along the intersection line of the fixed clamp 11 and the clamp support 13. The current layer 113 is used to connect to the current line of the test equipment, and the voltage layer 111 is used to connect to the voltage line of the test equipment.

[0043] Understandably, in practice, on the one hand, ground personnel use telescopic component 7 to transport clamping component 1 and power component 4 to a high altitude. When the test part 2 of the device under test is located between fixed clamp 11 and moving clamp 12, the power component 4 controls the moving clamp 12 to move closer to the fixed clamp 11, so that clamping component 1 holds the test part 2. When the power component 4 controls the moving clamp 12 to move away from the fixed clamp 11, clamping component 1 releases the test part 2, without the need for manual climbing or using an aerial work platform to connect or disconnect test lines.

[0044] It should be noted that the device under test includes a test section 2 and a resistor under test 3, with one end of the test section 2 connected to the resistor under test 3. During testing, the clamping assembly 1 is clamped onto the test section 2, and the current and voltage of the resistor under test 3 are tested. This embodiment of an electrical testing high-altitude intelligent auxiliary wiring device can be applied to preventative testing of primary equipment such as transformers, switches, current transformers, and voltage transformers. Taking the measurement of transformer winding current and voltage as an example, the device under test is a transformer, the test section 2 is a transformer terminal block, and the resistor under test 3 is the transformer's internal winding. The transformer terminal block is connected to the transformer's internal winding. Therefore, this embodiment achieves the connection of the current and voltage lines of the test device to the transformer terminal block by clamping the clamping assembly 1, thus enabling the testing of the current and voltage of the transformer's internal winding.

[0045] On the other hand, the current and voltage lines of the test equipment are both connected to the fixed clamp 11. Along the intersection of the fixed clamp 11 and the clamp support 13, a current layer 113, an insulating layer 112, and a voltage layer 111 are sequentially distributed. When the fixed clamp 11 is fixed to the test section 2, the voltage and current circuits are connected in one go. It should be noted that this embodiment uses the DC voltage drop method to measure the current and voltage of the resistor under test 3. Figures 7-8 As shown, based on this embodiment, the fixed clamp 11 has a distribution structure in which a current layer 113, an insulating layer 112, and a voltage layer 111 are sequentially distributed along the intersection line of the fixed clamp 11 and the clamp support 13. When the operator controls the clamp assembly 1 to clamp the test section 2, the positional relationship between the current layer 113, the voltage layer 111, and the resistor under test 3 can be easily adjusted. This allows the voltage layer 111 to be closer to the resistor under test 3, while the current layer 113 is farther away from the resistor under test 3. When the voltage layer 111 is closer to the resistor under test 3, the voltage line directly measures the voltage at the end of the resistor under test 3 when it contacts the test section 2 through the voltage layer 111. This is not affected by the resistance of the current line connected to the current layer 113 or the resistance of the current layer 113 itself, thereby reducing voltage measurement errors and improving test accuracy.

[0046] In a more specific embodiment, the insulating layer 112 is made of an insulating material, and the current layer 113 and the voltage layer 111 are both made of aluminum alloy. The insulating layer 112 is used to completely insulate the current layer 113 and the voltage layer 111.

[0047] In a more specific embodiment, the jaw opening clearance can be up to 7cm, allowing for the clamping of terminal blocks for devices of various voltage levels.

[0048] In a more specific embodiment, the main body of the clamping assembly 1 is made of aluminum alloy, which has the advantages of being lightweight and having high hardness.

[0049] In a more specific embodiment, such as Figure 2 and Figure 4 As shown, a voltage terminal 8 is provided on the side of the clamp assembly 1 near the voltage layer 111, and the voltage terminal 8 is connected to the voltage layer 111. A current terminal 9 is provided on the side of the clamp assembly 1 near the current layer 113, and the current terminal 9 is connected to the current layer 113.

[0050] In a more specific embodiment, it should be noted that the current terminal 9 and the voltage terminal 8 can be symmetrically arranged on both sides of the clamping assembly 1 or asymmetrically arranged on both sides of the clamping assembly 1.

[0051] In a more specific embodiment, the current line and voltage line are combined into a single piezoelectric multi-core cable 6, enabling the simultaneous wiring and take-up of both voltage and current lines in a single wiring operation, thus improving efficiency. At one end of the piezoelectric multi-core cable 6, two core wires of the current line and voltage line are independently led out to connect to the current terminal 9 and the voltage terminal 8, respectively. At the other end of the piezoelectric multi-core cable 6, two core wires of the current line and voltage line are independently led out to connect to the current terminal and voltage terminal of the test equipment.

[0052] In a more specific embodiment, such as Figure 2 As shown, the piezoelectric multi-core cable 6 is fixed on the power assembly 4.

[0053] In a more specific embodiment, the voltage line cross-sectional area is 1.5 mm². The smallest cross-sectional area is selected to save costs, reduce weight, and facilitate use while meeting requirements. The current line cross-sectional area is 8 mm² multi-strand copper braided wire, with a cylindrical closed loop braided in one circle, hollow in the middle, and closed loop braided on all four sides. This reduces the weight of the wire and enhances its current-carrying capacity. Only 8 mm² is needed to withstand currents up to 100A, meeting the requirements of various electrical test projects.

[0054] In a more specific embodiment, electrical testing of different electrical equipment generally involves three or more test items, requiring the transport of numerous test leads for the testing instruments, resulting in significant physical exertion. In this embodiment, the piezoelectric multi-core cable 6 uses a U-shaped interface for its connection to the testing instruments. The diameter of the U-shaped interface from the inside out is 6mm, 8mm, and 10mm, with a thickness of 2mm, enabling reliable wiring with various instruments. The piezoelectric multi-core cable 6 in this embodiment can be used with instruments for testing DC resistance, insulation resistance, dielectric loss and capacitance, and on-load tap changers, demonstrating strong versatility. Therefore, it eliminates the need to carry multiple test lead boxes, saving manpower and resources.

[0055] In a more specific embodiment, such as Figure 3 As shown, the power assembly 4 includes a first rotating rod 41. One end of the first rotating rod 41 is connected to the movable clamp 12. The middle part of the first rotating rod 41 passes through the clamp support 13 and is threadedly connected to the clamp support 13. The first rotating rod 41 is used to drive the movable clamp 12 to move under the action of the threaded transmission when it rotates. The other end of the first rotating rod 41 is used to connect to the telescopic assembly 7.

[0056] Understandably, in specific implementation, threaded transmission is achieved through the threaded connection between the first rotating rod 41 and the clamp support 13. When the first rotating rod 41 rotates, under the action of the threaded transmission, the first rotating rod 41 moves in the axial direction, causing the moving clamp 12 to move closer to or away from the fixed clamp 11. Based on the precise displacement control, self-locking characteristics and high-efficiency transmission characteristics of the threaded transmission, the stability of the moving clamp 12 during movement and when it is stopped is ensured.

[0057] In a more specific embodiment, such as Figure 3 As shown, the end of the clamp holder 13 connected to the first rotating rod 41 is provided with an internal thread bearing. The first rotating rod 41 includes a threaded part 411 and a rotating part 412. The first rotating rod 41 is connected to the internal thread bearing through the threaded part 411. It can be understood that, in specific implementation, when the first rotating rod 41 rotates, the rotational motion of the first rotating rod 41 is converted into linear motion under the action of the threaded transmission, which drives the moving clamp 12 to move closer to or away from the fixed clamp 11.

[0058] In a more specific embodiment, such as Figure 3 As shown, the power assembly 4 also includes a second rotating rod 42, which is disposed on one side of the first rotating rod 41. One end of the second rotating rod 42 is perpendicularly connected to the middle of the first rotating rod 41 via a power direction converter 43. The power direction converter 43 is used to drive the first rotating rod 41 to rotate when the second rotating rod 42 rotates. The other end of the second rotating rod 42 is used to connect to the telescopic assembly 7. It can be understood that, in specific implementations, the second rotating rod 42 is perpendicularly connected to the first rotating rod 41 via the power direction converter 43, allowing the operator to control the movement of the moving clamp 12 in either the direction of the first rotating rod 41 or the direction of the second rotating rod 42, applicable to the test section 2 of the tested equipment set at different angles.

[0059] In a more specific embodiment, the power direction conversion component 43 includes a first bevel gear 431 and a second bevel gear 432 that mesh perpendicularly with each other. The first bevel gear 431 is fixed to the middle of the first rotating rod 41, and the second bevel gear 432 is fixed to the end of the second rotating rod 42 connected to the first rotating rod 41. It is understood that, in specific implementations, through the meshing of the second bevel gear 432 and the first bevel gear 431, when a rotational force is applied to the second rotating rod 42, the second bevel gear 432 rotates, and the first bevel gear 431 also rotates under the transmission of the second bevel gear 432, causing the first rotating rod 41 to rotate. It is understood that the axes of the two meshing bevel gears intersect at a point with an angle of 90°. When the second bevel gear 432 rotates as the driving gear, it drives the first bevel gear 431 to rotate around its axis through the meshing of its teeth. When the first bevel gear 431 rotates as the driving gear, it drives the second bevel gear 432 to rotate around its axis through the meshing of its teeth, thereby realizing the transmission of power in different directions and converting the rotation of one shaft into the rotation of another intersecting shaft. Furthermore, in this embodiment, the first bevel gear 431 and the second bevel gear 432 have the advantages of compact structure, high transmission efficiency, large transmission torque, and stable transmission ratio, which can enable the power assembly 4 to smoothly control the movement of the moving clamp 12 and effectively improve the accuracy of wiring.

[0060] In a more specific embodiment, the clamping assembly 1 formed by the fixed clamp 11, the clamp support 13, and the movable clamp 12 has a U-shaped structure, and the second rotating rod 42 is perpendicular to the U-shaped surface of the clamping assembly 1. It can be understood that, in specific implementation, when the clamped surface of the test section 2 of the device under test is parallel to the ground, the first rotating rod 41 is connected to the telescopic assembly 7. The operator controls the rotation of the telescopic assembly 7 to drive the first rotating rod 41 to rotate, thereby controlling the movement of the movable clamp 12. When the clamped surface of the test section 2 of the device under test is perpendicular to the ground, the second rotating rod 42 is connected to the telescopic assembly. The operator controls the rotation of the telescopic assembly to drive the first rotating rod 41 to rotate. Under the transmission action of the second bevel gear 432 and the first bevel gear 431, the first rotating rod 41 is driven to rotate, thereby controlling the movement of the movable clamp 12. Therefore, this embodiment achieves vertical transmission between the first rotating rod 41 and the second rotating rod 42 by setting a first bevel gear 431 and a second bevel gear 432 that mesh perpendicularly with each other. This allows the power assembly 4 to be controlled from two different directions, increasing the adaptability to the clamped surfaces of the test section 2 of the device under test at different angles.

[0061] In a more specific embodiment, the second rotating rod 42 is positioned on the side closer to the voltage layer 111 or the voltage terminal 8. It is understood that, in practice, the test section 2 is generally located above the resistor 3 being measured. For example, in a transformer structure, the transformer test section 2 is located above the transformer windings. When the clamped surface of the transformer winding test section 2 is perpendicular to the ground, the second rotating rod 42 is connected to the telescopic assembly 7. The operator controls the telescopic assembly 7 to rotate, causing the second rotating rod 42 to rotate. Under the transmission action of the second bevel gear 432 and the first bevel gear 431, the first rotating rod 41 rotates, thereby controlling the movement of the moving clamp 12. At this time, only when the second rotating rod 42 is positioned on the side closer to the voltage layer 111 or the voltage terminal 8 can the voltage layer 111 be ensured to be closer to the resistor 3 being measured than the current layer 113, thus ensuring that the voltage measurement accuracy is not affected by the resistance of the current layer 113.

[0062] In a more specific embodiment, the power assembly 4 includes a housing 44, which is T-shaped, and the first rotating rod 41 and the second rotating rod 42 are both mounted and stabilized inside the housing via bearings.

[0063] In a more specific embodiment, the side of the movable clamp 12 away from the fixed clamp 11 is rotatably connected to the first rotating rod 41, and the side of the movable clamp 12 away from the jaws of the clamp assembly 1 is slidably connected to the clamp support 13. It can be understood that by rotatably connecting the first rotating rod 41 to the fixed clamp 11 and slidably connecting the movable clamp 12 to the clamp support 13, the movable clamp 12 will not rotate with the first rotating rod 41 when it rotates, maintaining a stable movement of the movable clamp 12 close to the fixed clamp 11. This achieves stable clamping of the test section 2 of the device under test with the fixed clamp 11, effectively improving the accuracy and stability of the wiring.

[0064] In a more specific embodiment, the side of the movable clamp 12 that is slidably connected to the clamp support 13 is provided with a groove, and the side of the clamp support 13 that is slidably connected to the movable clamp 12 is provided with a slide rail 131 corresponding to the groove.

[0065] In a more specific embodiment, both the fixed clamp 11 and the movable clamp 12 have friction protrusions 121 on their clamping surfaces. It is understood that, in specific implementations, the friction protrusions 121 increase the roughness of the clamping surfaces of the fixed clamp 11 and the movable clamp 12, thereby improving the clamping stability of the clamping assembly.

[0066] In a more specific embodiment, such as Figure 2 As shown, the clamping surfaces of the movable clamp 12 are all provided with serrated protrusions 114. The depth of the serrated protrusions 114 is 2mm. It can be understood that, in specific implementation, the sharp shape of the serrated pattern generates friction with the surface of the test part 2 of the device under test, removing the oxide layer on the surface of the test part 2 and improving the test accuracy.

[0067] It should be noted that the working principle of removing the surface oxide layer is as follows: When the clamping assembly 1 clamps and fixes the test part 2 of the device under test, the fixed clamp 11, the movable clamp 12, the power assembly 4, and the telescopic assembly 7 form a lever, with the movable clamp 12 as the fulcrum. By using the lever principle, a slight movement of the telescopic assembly 7 can drive the serrated protrusions 114 on the surface of the fixed clamp 11 to fully polish the contact surface between the test part 2 and the fixed clamp 11, removing the oxide layer on the contact surface, so as to ensure good contact between the fixed clamp 11 and the test part 2 and improve the test accuracy.

[0068] In a more specific embodiment, such as Figure 3 , Figure 5 and Figure 6 As shown, both the first rotating rod 41 and the second rotating rod 42 are provided with quick-connect parts 5 for connecting to the telescopic assembly 7. The surface of the quick-connect part 5 has multiple protrusions 51 arranged in a ring. The surface of the connecting member 10 of the telescopic assembly 7 also has multiple protrusions. The protrusions on the surface of the connecting member 10 are staggered from the protrusions 51 of the quick-connect part 5, meaning the protrusions 51 on the surface of the quick-connect part 5 are used to engage with the recesses between adjacent protrusions on the surface of the connecting member 10 of the telescopic assembly 7. It can be understood that, in practical implementation, the interlocking of the protrusions and recesses of the quick-connect part 5 and the connecting member 10 of the telescopic assembly 7 increases the contact area between them, improving the shear resistance of the quick-connect part 5. This better assists the clamping assembly 1 in scraping off the oxide layer, while simultaneously limiting the telescopic assembly 7 and preventing slippage.

[0069] In a more specific embodiment, a notch 52 is provided on one side of the quick connector 5. It can be understood that, in specific implementation, the screw shaft connected to the connector 10 of the telescopic component 7 is engaged through the notch 52, so that the quick connector 5 can be disassembled and assembled without completely disassembling the screw and nut, thereby improving the efficiency of disassembly and assembly of the quick connector 5 and the connector 10 of the telescopic component 7.

[0070] In a more specific embodiment, existing technologies lack intelligent alarm functions when current lines have poor contact. During DC resistance testing, the current is high, reaching up to 200A. Poor contact can burn the equipment lugs and test clamps. Furthermore, the lack of intelligent alarm functions when the safety distance between high-altitude operations and live equipment is insufficient poses a risk of electric shock. Therefore, this embodiment's clamp assembly 1 is equipped with a data acquisition unit and a data transmission unit. The data acquisition unit includes a temperature sensor and an electric field strength sensor, which are mounted on the fixed clamp 11 and connected to the data transmission unit. The data transmission unit communicates with a terminal device. In practice, by mounting the temperature sensor and electric field strength sensor on the fixed clamp 11, the terminal device can monitor temperature and electric field strength data in real time. When poor contact occurs, the terminal device issues an alarm to remind personnel to take timely measures.

[0071] In a more specific embodiment, the data transmission unit employs a Bluetooth transmission module, and the terminal device is a mobile phone. The on-site operator's mobile phone has a mobile APP unit installed, which analyzes and processes the received data and outputs an alarm signal via the phone. This enables the transmission of data from the temperature sensor and electric field strength sensors to the mobile APP unit via the Bluetooth transmission module. Bluetooth transmission is chosen because it offers shorter average transmission time, a transmission accuracy of ≥99%, a timeliness of <1 second, and power consumption of less than 70mAh.

[0072] In a more specific embodiment, the telescopic component 7 is a telescopic insulating rod. The device is lightweight and portable, and can be used in conjunction with the telescopic insulating rod. For testing purposes, only a small wiring box needs to be carried.

[0073] In summary, the high-altitude intelligent auxiliary wiring device for electrical testing provided in this embodiment enables simultaneous wiring of multiple test items during the electrical testing of primary electrical equipment such as transformers, switches, current transformers, and voltage transformers. It offers high measurement accuracy, wide applicability, and transforms high-altitude work into ground-based work, allowing for the connection of high-altitude voltage and current test leads from the ground. Furthermore, it provides timely and accurate alarms in case of poor contact or insufficient safety distance from the equipment. This not only effectively shortens equipment downtime, reduces the qualification requirements and labor intensity of operators, decreases manpower, optimizes work processes, and improves work efficiency, but also eliminates the risk of falls from heights, ensuring personal and equipment safety.

[0074] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-altitude intelligent auxiliary wiring device for electrical testing, characterized in that, The system includes a clamping assembly and a power assembly. The clamping assembly includes a clamp support and a fixed clamp and a movable clamp located on one side of the clamp support. One side of the fixed clamp is fixed to one end of the clamp holder, and the side of the movable clamp away from the fixed clamp is movably connected to the other end of the clamp holder through the power assembly. The power assembly is used to control the movable clamp to move closer to or away from the fixed clamp so that the clamp assembly clamps or releases the test part of the device under test. The other end of the power assembly is used to connect to the telescopic assembly. The clamping surface of the fixed clamp has a current layer, an insulating layer, and a voltage layer distributed sequentially along the intersection line of the fixed clamp and the clamp support. The current layer is used to connect to the current line of the test equipment, and the voltage layer is used to connect to the voltage line of the test equipment.

2. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 1, characterized in that, The power assembly includes a first rotating rod, one end of which is connected to the movable clamp, and the middle part of the first rotating rod passes through the clamp support and is threadedly connected to the clamp support. When the first rotating rod rotates, it drives the movable clamp to move under the action of threaded transmission. The other end of the first rotating rod is used to connect to the telescopic assembly.

3. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 2, characterized in that, The power assembly further includes a second rotating rod, which is disposed on one side of the first rotating rod. One end of the second rotating rod is perpendicularly connected to the middle of the first rotating rod via a power direction conversion component. The power direction conversion component is used to drive the first rotating rod to rotate when the second rotating rod rotates. The other end of the second rotating rod is used to connect to the telescopic assembly.

4. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 3, characterized in that, The power direction conversion component includes a first bevel gear and a second bevel gear that mesh perpendicularly with each other. The first bevel gear is fixed in the middle of the first rotating rod, and the second bevel gear is fixed in the end of the second rotating rod that connects to the first rotating rod.

5. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 3, characterized in that, The side of the movable clamp away from the fixed clamp is rotatably connected to the first rotating rod, and the side of the movable clamp away from the jaws of the clamp assembly is slidably connected to the clamp support.

6. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 5, characterized in that, The clamping surfaces of both the stationary and moving clamps are provided with friction protrusions.

7. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 6, characterized in that, The clamping surface of the moving clamp is provided with serrated protrusions.

8. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 7, characterized in that, Both the first rotating rod and the second rotating rod are provided with quick-connect fittings for connecting to the telescopic assembly. The surface of the quick-connect fitting is provided with a plurality of protrusions arranged in a ring. The protrusions are used to engage with the recesses on the surface of the connector of the telescopic assembly.

9. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 8, characterized in that, The quick-connect fitting has a notch on one side.

10. The high-altitude intelligent auxiliary wiring device for electrical testing according to claim 1, characterized in that, The clamping assembly is provided with a data acquisition unit and a data transmission unit. The data acquisition unit includes a temperature sensor and an electric field strength sensor. The temperature sensor and the electric field strength sensor are mounted on the fixed clamp and are respectively connected to the data transmission unit. The data transmission unit is used for communication connection with a terminal device.

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