A frequency conversion control cabinet with intelligent monitoring and self-repair function

Abstract

The present invention discloses a variable frequency control cabinet with intelligent monitoring and self-repair of damage, which relates to the technical field of variable frequency control cabinet equipment, including a cabinet body, internal circuits and a central controller, and is characterized in that it also includes a guide rail and a self-repairing component installed inside the cabinet body, the guide rail is installed along the inner wall surface of the cabinet body, and in cooperation with the bending protection component and the self-repairing component, a pressure feedback closed loop is formed by a trigger-type contact probe and a force-bearing sliding member, so that when the contact member lightly touches the circuit, the trigger-type contact probe senses the pressure distribution in real time. If it is uneven, the driving structure drives the outer protection plate to deflect at a micro-angle, and the universal adjustment rod is fine-tuned synchronously to make the flexible plate fit the curvature of the circuit. The memory alloy ring cooperates with the driving structure, so that in cooperation with the electric temperature controller, the side shielding plate and the outer protection plate, it can adapt to complex curved circuits such as U-shaped and S-shaped circuits, accurately align with the breakage points of ultra-fine wires, and solve the problem of blind spots in the repair of dense wiring.

Description

Technical Field

[0001] The present invention relates to the technical field of variable frequency control cabinet equipment, in particular to a variable frequency control cabinet capable of intelligently monitoring damage and self-repairing. Background Art

[0002] The frequency conversion control cabinet is mainly used to adjust the operating frequency of the equipment, reduce energy loss, start the equipment smoothly, and reduce the damage to the motor caused by the large current generated when the equipment is directly started. It also has built-in analog input (for speed control or feedback signal), PID control, pump switching control (for constant pressure), communication function, macro function (different parameter settings for different occasions), multi-speed, etc.; it can be widely used in industrial and agricultural production and various types of buildings. The water supply, drainage, fire protection, sprinkler pipe network boosting and HVAC hot and cold water circulation and other occasions of automatic control.

[0003] However, in the prior art, such as the "A control cabinet for outdoor use that is easy to upgrade and repair" in Chinese patent publication number: CN220155973U, includes a main body, a drive motor and a rainproof cloth. A groove is provided on one side of the protective frame, a rack is provided inside the protective frame, and the outer wall of the drive motor is provided with a telescopic rod that cooperates with the protective frame. A connecting rod is provided at one end of the drive motor, and a gear is provided on the outer wall of the connecting rod. The drive motor is started using an external terminal to drive the connecting rod to rotate. Because one end of the rainproof cloth is fixedly connected to the inner wall of the rainproof cloth, when the connecting rod rotates, it drives the connecting rod on the outer wall of the connecting rod to unfold. The telescopic rod connected to the outer wall of the drive motor will push the drive motor forward to unfold the rainproof cloth on the outer wall of the main body. This device is provided to prevent rainwater from entering the interior of the main body from the gap at the connection between the door panel and the main body, thereby avoiding damage to the parts inside the main body.

[0004] The Chinese patent publication number: CN118973081A, "an intelligent flexible circuit board with self-repairing function" includes a plate body, a groove, multiple circuits, a pressure block, a movable barrel, an elastic airbag, a connecting piece, a rotating piece, a pipeline, a pressure frame, and a pressure plate; under the action of thermal expansion and contraction, the plate body is elastically movable, thereby driving the pressure block and the movable barrel to move toward the connecting plate, pressing the elastic airbag, and at the same time, the rotating piece rotates to rotate the pressure frame, and the rotating pressure frame squeezes and blocks the pipeline; the rotating piece simultaneously causes the pressure plate to support the two ends of the elastic airbag, and due to the self-rotation of the pressure frame, the reaction rotating piece causes the pressure plate to press the elastic airbag and squeeze toward the middle of the elastic airbag, further pressing the elastic airbag, on the one hand, causing the movable barrel to move upward, thereby connecting the connecting piece, and on the other hand, causing the silver glue or conductive silver paste to move through the connecting piece, causing the silver glue or conductive silver paste to enter the groove, thereby filling and repairing the broken part of the circuit. This method automatically repairs, which is simple and convenient.

[0005] At present, this device is only used to prevent rainwater from entering the interior of the main body through the gap between the door panel and the main body during use of the frequency conversion control cabinet. However, in actual use, it is unable to effectively monitor the internal joints of the frequency conversion control cabinet or the lines that are in the bends for a long time. The wiring or the bends will cause the insulation layer to be damaged, which may easily lead to the internal core of the cable of the frequency conversion control cabinet being in the bend state for a long time, causing intermittent short circuit. At the same time, when the control cabinet is running, there are complex working conditions such as electromagnetic interference, temperature changes, and vibrations inside. It is difficult for ordinary circuit boards to adapt to the self-repair mechanism. Although the existing circuits are in the bends, When a problem occurs with a frequency conversion control cabinet, it is repaired by powering off and welding. However, to repair the bent part, it needs to be straightened into a horizontal shape before welding. This may cause the damage or rupture of the line to increase after it is deformed into a horizontal shape, causing secondary damage. The operation of straightening the bent line itself takes a lot of time and energy, and requires professionals to operate carefully based on their experience to minimize damage, resulting in low efficiency. Once the control line is damaged, it is easy to cause speed fluctuations and overload protection failures caused by control line failures during motor operation. Therefore, it is necessary to propose a frequency conversion control cabinet that can intelligently monitor damage and self-repair. Summary of the Invention

[0006] The purpose of the present invention is to provide a variable frequency control cabinet with intelligent monitoring and self-repair function to solve the problem proposed in the above background technology that during use, the internal joints of the variable frequency control cabinet or the lines that are in a bend for a long time cannot be effectively monitored, and the lines at the connection points or bends will cause damage to the insulation layer, which may easily lead to the internal core of the cable of the variable frequency control cabinet being in a bent state for a long time, causing intermittent short circuits. At the same time, when the control cabinet is in operation, there are complex working conditions such as electromagnetic interference, temperature changes, and vibrations inside, and the self-repair mechanism of ordinary circuit boards is difficult to adapt. Although there is a method of repairing the lines at the bends by powering off and welding after problems occur in the variable frequency control cabinet, the bends need to be straightened into a horizontal shape before welding repair, which may easily lead to increased damage or rupture of the lines after the lines are deformed into a horizontal shape, causing secondary damage. The operation of straightening the bent lines itself requires a lot of time and energy, and requires professionals to rely on experience and operate carefully to minimize damage, resulting in low efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a variable frequency control cabinet with intelligent monitoring and self-repair of damage, comprising a cabinet body, internal circuits and a central controller, and also comprising a guide rail and a self-repairing component installed inside the cabinet body, wherein the guide rail is installed along the inner wall surface of the cabinet body, and the side end of the guide rail is slidably connected to an azimuth calibration robot arm, and a lifting structure is installed on the back side of the guide rail, and the lifting structure and the guide rail are used to drive the azimuth calibration robot arm to operate in a full range according to the height of the cabinet body, the internal circuit includes a curved circuit end and a wiring end, and the interior of the cabinet body is paved with a distributed optical fiber sensor, and Detection sensors are implanted on the surfaces of the curved line ends and wiring terminals to identify the location and type of damage points. A rack and pinion two-way travel structure is installed inside the side end of the orientation calibration robot arm. Universal adjustment rods are installed on both sides of the rack and pinion two-way travel structure. Mounting ends are installed on the side ends of the rack and pinion two-way travel structure for installing an electrical connection detection structure. A bending protection component is connected to the bottom of the universal adjustment rod, which is used to actively protect the line in a bent state during welding adsorption. The bottom end of the bending protection component is installed inside a self-repair component to handle bending damage.

[0008] The bending protection assembly includes a memory alloy ring, an inner contact heat-resistant flexible plate and an outer protection plate. A trigger contact probe is installed inside the inner contact heat-resistant flexible plate to sense the contact pressure between the inner contact heat-resistant flexible plate and the internal circuit surface in real time.

[0009] Preferably, the bending protection assembly further includes a driving structure, the top of the driving structure and the side end of the universal adjustment rod are arranged, the bottom of the driving structure is rotatably connected to the transmission working rod, the bottom end of the transmission working rod is connected to a rotating rod, and the rotating rod and the outer protection plate are arranged to drive the outer protection plate to rotate at a micro-angle around the axis of the rotating rod to adapt to the change of the curvature radius of the bending line end.

[0010] Preferably, an electric temperature controller is installed at the side end of the driving structure, and a conductive part is connected to the side of the electric temperature controller. The left and right ends of the bottom of the conductive part are connected to the memory alloy ring, and the side end of the memory alloy ring is connected to a connecting end. The side end of the connecting end is provided with a side shielding plate, and the connecting end of the inner contact heat-resistant flexible plate and the outer protective plate is provided with an inert gas jet air curtain generator for spraying inert gas during welding repair to form a thick air curtain on the end surface of the curved line to inhibit metal oxidation. A contact part is installed at the bottom end of the inner contact heat-resistant flexible plate, and the trigger contact probe passes through the inner contact heat-resistant flexible plate and the contact part in sequence, and its bottom end contacts the surface of the line, and a cavity is opened inside the outer protective plate.

[0011] Preferably, the internal sliding connection of the cavity is provided with a force-bearing slider, the top of the force-bearing slider is fastened with a force-bearing spring, the top of the force-bearing spring is connected to the internal top of the cavity, and the force-bearing slider is connected to a trigger-type contact probe. When the surface pressure of the circuit is transmitted to the force-bearing slider, the force-bearing spring is compressed and the trigger-type contact probe signal is triggered, thereby realizing linear detection of contact pressure.

[0012] Preferably, the self-repairing component includes a main electromagnetic shielding plate, and the side shielding plate slides and retracts inside the main electromagnetic shielding plate. The side end of the main electromagnetic shielding plate is connected to a heat-resistant plate, and a sliding guide column is installed on the surface of the heat-resistant plate. The outside of the sliding guide column is slidably connected to a track rack.

[0013] Preferably, a slot frame is installed on the outer surface of the main electromagnetic shielding plate, and a telescopic guide rod is installed on the inner side end of the slot frame. The side end of the telescopic guide rod is connected to a magnetic connecting block for magnetic connection with the back side of the track rack. The magnetic connecting block is set to an aluminum-nickel-cobalt alloy with a silver-plated layer on the surface. The outside of the magnetic connecting block is wrapped with a copper-nickel alloy shielding shell. The copper-nickel alloy shielding shell is connected to the main electromagnetic shielding plate through a conductive spring. A spiral conductive groove is set in the contact area between the track rack and the sliding guide column, and an elastic conductive rubber strip is embedded in it. The sliding contact surface between the main electromagnetic shielding plate and the side shielding plate is distributed with comb-shaped conductive springs.

[0014] Preferably, a displacement positioning frame is slidably connected in the internal sliding groove of the track rack, a micro servo driver is installed at the side end of the displacement positioning frame, and the output end of the micro servo driver passes through the displacement positioning frame and is connected to a driving gear structure.

[0015] Preferably, the driving gear structure is composed of two sets of meshing gears, and electromagnetic blockers are symmetrically installed on the left and right ends of the top gear. The side ends of the electromagnetic blockers are connected to rotating parts, and a rod column is connected to the surface of the rotating part. The side ends of the rod column are connected to a rotating rod, and a mounting frame is installed on the outside of the rotating rod. A connecting column is installed at the front end of the mounting frame. After the rotating part rotates, it drives the rod column to form a spacing difference between the top and the bottom, so that the rotating rod drives the mounting frame and the connecting column to form an angular rotation.

[0016] Preferably, a circular rotation driver is installed at the side end of the connecting column, a micro distance guide rail is installed at the side end of the circular rotation driver, a ball joint and a micro electromagnetic guide rod are installed at the bottom end of the micro electromagnetic guide rod, and the side end of the micro electromagnetic guide rod is connected to a nano welding repair structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the present invention, by cooperating with the bending protection component and the self-repairing component, a pressure feedback closed loop is formed between the trigger contact probe and the force-bearing sliding member as a whole, so that when the contact member lightly touches the circuit, the trigger contact probe senses the pressure distribution in real time. If there is an uneven situation where the pressure on the left side is large and the pressure on the right side is small, the driving structure drives the outer protection plate to deflect at a slight angle through the micro-servo motor, and at the same time, the universal adjustment rod synchronously fine-tunes the pitch or yaw angle to make the flexible plate completely fit the curvature of the circuit. When the pressure is too large, the outer protection plate elastically rebounds to release the pressure through the force spring, ensuring that the contact pressure is stable in a safe range, avoiding indentation or scratching of the insulating layer, and achieving "zero damage" fitting, and making the memory alloy ring and the driving structure cooperate to achieve arbitrary bending adaptation. When the electric temperature controller is heated to the phase change temperature, The memory alloy ring automatically shrinks and hugs the line, driving the side shielding plate to fit the curved surface, and cooperates with the micro-angle rotation of the outer protective plate. The micro-angle rotation will not cause the outer protective plate and the inner heat-resistant flexible plate to contact. It can adapt to complex curved lines with a curvature radius of U, S, etc. (such as dense wiring, rotating component slip ring lines), and uses a micro-servo drive and a drive gear structure to support 0-90° free adjustment of the angle. Through the cooperation of the rod column and the rotating rod, the connecting column carrying the repair tool remains perpendicular to the curved line, effectively solving the problem of repair posture of complex curved lines with a large curvature radius such as U-shaped and S-shaped lines. In combination with the ball joint and the micro electromagnetic guide rod, a three-dimensional fine-tuning mechanism is formed, which can accurately align with the break point of the ultra-fine wire, achieve sub-millimeter positioning, and solve the problem of blind spots in the repair of densely spaced wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the main view in a frequency conversion control cabinet capable of intelligently monitoring damaged and self-repairing functions according to the present invention;

[0020] Figure 2 This is a structural diagram of the back side of a frequency conversion control cabinet capable of intelligently monitoring damaged and self-repairing functions according to the present invention;

[0021] Figure 3 This is a structural diagram of a bending protection component in a frequency conversion control cabinet capable of intelligently monitoring damage and self-repairing according to the present invention;

[0022] Figure 4 The present invention is a frequency conversion control cabinet with intelligent monitoring and self-repair Figure 3 A schematic diagram of the enlarged structure at point A;

[0023] Figure 5 This is a partial structural diagram of a bending protection component in a frequency conversion control cabinet capable of intelligently monitoring damage and self-repairing according to the present invention;

[0024] Figure 6 The present invention is a frequency conversion control cabinet with intelligent monitoring and self-repair Figure 5 A schematic diagram of the enlarged structure at D;

[0025] Figure 7 This is a structural diagram of a self-repairing component in a frequency conversion control cabinet capable of intelligently monitoring damage and self-repairing according to the present invention;

[0026] Figure 8 This is a partial structural diagram of a self-repairing component in a frequency conversion control cabinet capable of intelligently monitoring damage and self-repairing according to the present invention;

[0027] Figure 9 The present invention is a frequency conversion control cabinet with intelligent monitoring and self-repair Figure 8 A schematic diagram of the enlarged structure at point B;

[0028] Figure 10 The present invention is a frequency conversion control cabinet with intelligent monitoring and self-repair Figure 8 Schematic diagram of the enlarged structure at C.

[0029] In the figure: 100, orientation calibration robot arm; 200, mounting end; 300, rack and pinion two-way travel structure; 400, universal adjustment rod; 500, bending protection assembly; 501, driving structure; 502, side shielding plate; 503, conductive part; 504, outer protection plate; 505, inner contact heat-resistant flexible plate; 506, contact part; 507, inert gas jet air curtain generator; 508, electric temperature controller; 509, memory alloy ring; 511, transmission operating rod; 512, connecting end; 513, trigger contact probe; 514, cavity ; 515, force-bearing sliding part; 516, force-bearing spring; 600, self-repairing component; 601, heat-resistant plate; 602, sliding guide column; 603, track rack; 604, main electromagnetic shielding plate; 605, displacement positioning frame; 606, micro servo drive; 607, drive gear structure; 608, rotating part; 609, connecting column; 610, micro electromagnetic guide rod; 611, ball joint; 612, nano-welding repair structure; 613, rotating rod; 614, rod column; 700, slot frame; 800, telescopic guide rod; 900, magnetic connecting block. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] In the embodiment of the present invention, referring to Figure 1 and Figure 2As shown: A frequency conversion control cabinet with intelligent monitoring of damaged and self-repairing functions, including a cabinet body, internal circuits and a central controller, as well as a guide rail and a self-repairing component 600 installed inside the cabinet body. The guide rail is installed along the inner wall surface of the cabinet body, and the side end of the guide rail is slidably connected to an orientation calibration mechanical arm 100. A lifting structure is installed on the back side of the guide rail. In cooperation with the lifting structure and the guide rail, it is used to drive the orientation calibration mechanical arm 100 to operate in a full range according to the height of the cabinet body. The internal circuit includes a curved circuit end and a wiring end. Distributed optical fiber sensors are laid inside the cabinet body, and detection sensors are implanted on the surfaces of the curved circuit end and the wiring end for identifying the location and type of the damaged point. A rack and pinion two-way travel structure 300 is installed inside the side end of the orientation calibration mechanical arm 100. Universal adjustment rods 400 are installed on both side ends of 300, and mounting ends 200 are installed on the side ends of the rack and pinion bidirectional stroke structure 300 for installing an electrical connection detection structure. The bottom of the universal adjustment rod 400 is connected to a bending protection component 500, which is used to actively protect the line in a bent state during welding adsorption. The bottom end of the bending protection component 500 is installed inside the self-repair component 600 to deal with bending damage. The central controller has a built-in motor control processing unit for dynamically adjusting the inverter output frequency according to the line strain data monitored by the distributed optical fiber sensor, and the self-repair component is linked to the motor overload protection circuit. When the detection sensor identifies that the line impedance is abnormal, the self-repair component 600 operation is executed first (i.e., nano-welding repair, and then restarting the motor soft start program).

[0032] Specifically: the distributed optical fiber sensors inside the cabinet are spirally wound on the line surface with the same spacing, continuously monitoring the line strain (such as insulation layer stretching, bending deformation) and temperature (local temperature rise is too fast), and the detection sensors (such as micro piezoresistive sensors, infrared temperature measurement chips) implanted on the curved line end and the terminal surface collect parameters such as contact pressure and surface temperature in real time, accurately identify problems such as loose joints (abnormal contact resistance), insulation layer damage (local temperature rise) or wire core breakage, and then promptly transmit the data of damage point location and type identification to the central controller, and then the central The controller sends control instructions to the lifting structure, guide rail and orientation calibration robot arm 100, so that the lifting structure starts the screw motor and drives the guide rail to rise and fall through the screw nut pair (the guide rail is set according to the internal space of the cabinet, such as a circular guide rail). Then the orientation calibration robot arm 100 moves vertically along the guide rail and adjusts to the target area (such as the end of the curved line in the middle of the cabinet) according to the height of the damaged point. That is, the motion trajectory composed of the lifting structure and guide rail is planned by the central controller according to the motor control signal path, so that the overall positioning accuracy is guaranteed, ensuring that the spatial coordinates of the repair tool and the motor control circuit match.

[0033] The rack and pinion bidirectional stroke structure 300 at the side end of the orientation calibration robot arm 100 is driven by a driving motor to rotate the active gear, and the racks on both sides move in opposite directions, pushing the universal adjustment rod 400 to move horizontally, so that the whole is close to the line area where the damaged point is located. The universal adjustment rod 400 is connected to the bending protection component 500 through a ball joint. The built-in angle adjustment motor drives the telescopic rod to pitch (±60°) and yaw (±90°) to ensure that the bending protection component 500 matches the curvature of the curved line end, so that the bending protection component 500 can operate and the self-repair component 600 can operate synchronously. Subsequently, the detection sensor measures the solder joint resistance and the joint contact resistance again to ensure that the conductive performance meets the standard, and the distributed optical fiber sensor monitors the strain at the repair site. If the strain during bending is greater than the preset value, it is determined that the solder joint strength is insufficient, triggering secondary repair, or the electrical connection detection structure is used to perform electrical detection and troubleshooting after the overall operation is completed.

[0034] In some embodiments, according to Figures 1-6 As shown, the bending protection assembly 500 includes a memory alloy ring 509, an inner contact heat-resistant flexible plate 505 and an outer protection plate 504. A trigger contact probe 513 is installed inside the inner contact heat-resistant flexible plate 505 for real-time sensing of the contact pressure between the inner contact heat-resistant flexible plate 505 and the internal circuit surface.

[0035] The bending protection assembly 500 further includes a driving structure 501, the top of the driving structure 501 and the side end of the universal adjustment rod 400 are arranged, the bottom of the driving structure 501 is rotatably connected to the transmission working rod 511, and the bottom end of the transmission working rod 511 is connected to a rotating rod, and the rotating rod and the outer protection plate 504 are arranged to drive the outer protection plate 504 to rotate at a micro-angle around the axis of the rotating rod to adapt to the change of the curvature radius at the end of the bending line.

[0036] An electric temperature controller 508 is installed at the side end of the driving structure 501, and a conductive part 503 is connected to the side of the electric temperature controller 508. The left and right ends of the bottom of the conductive part 503 are connected to the memory alloy ring 509. The side end of the memory alloy ring 509 is connected to the connecting end 512. The side end of the connecting end 512 is installed with a side shielding plate 502. An inert gas jet air curtain generator 507 is installed at the connecting end of the inner contact heat-resistant flexible plate 505 and the outer protective plate 504, which is used to spray inert gas during welding repair to form a thick air curtain on the surface of the curved line end to inhibit metal oxidation. A contact part 506 is installed at the bottom end of the inner contact heat-resistant flexible plate 505. The trigger contact probe 513 passes through the inner contact heat-resistant flexible plate 505 and the contact part 506 in sequence, and its bottom end contacts the line surface. A cavity 514 is opened inside the outer protective plate 504.

[0037] The cavity 514 is internally slidably connected to a force-bearing slider 515, and the top of the force-bearing slider 515 is fastened with a force-bearing spring 516. The top of the force-bearing spring 516 is connected to the internal top of the cavity 514, and the force-bearing slider 515 is connected to the trigger contact probe 513. When the surface pressure of the circuit is transmitted to the force-bearing slider 515, the force-bearing spring 516 is compressed and the trigger contact probe 513 signal is triggered, thereby realizing linear detection of contact pressure.

[0038] According to an embodiment of the present invention, specifically: after reaching the preset position as mentioned above, the contact piece 506 at the bottom end of the inner contact heat-resistant flexible plate 505 lightly touches the surface of the circuit, and the trigger contact probe 513 passes through the flexible plate and the contact piece, and the metal contact at its bottom end forms the first physical contact with the surface of the circuit. If the trigger contact probe 513 detects uneven pressure (such as high pressure on the left side and low pressure on the right side), the signal is transmitted to the central controller through the force-bearing slide 515. At this time, the driving structure 501 starts the micro-servo motor and drives the outer protective plate 504 to deflect around the axis of the rotating rod through the transmission working rod 511 (adjustment accuracy ±0.5°) until the contact pressure is evenly distributed. In the process, the universal adjustment rod 400 synchronously fine-tunes the pitch or yaw angle to make the inner contact heat-resistant flexible plate 505 completely fit the curvature of the circuit.

[0039] The electric temperature controller 508 heats the memory alloy ring 509 to the phase change temperature (such as 50-60°C) through the conductive part 503. The alloy ring automatically contracts or expands, driving the connection end 512 and the side shielding plate 502 to tighten toward the line surface, forming an initial clamping force or further adjusting the curvature with the cable. The side shielding plate 502 is docked with the electromagnetic shielding layer of the outer protective plate 504 to form a complete 360° shielding cavity. The side shielding plate 502 is made of copper-nickel alloy and is connected to the titanium alloy shell of the outer protective plate through a conductive spring to ensure the electrical continuity of the shielding layer (such as blocking electromagnetic interference above 10MHz). The ceramic coating on the surface of the outer protective plate 504 reflects welding heat radiation, and the inner contact heat-resistant flexible plate 505 uses a polyimide layer to isolate heat conduction, so that the surface temperature of the line is lower than the temperature resistance threshold.

[0040] When the motor is overloaded and the line temperature exceeds 120°C, the detection sensor synchronously activates the memory alloy ring 509 to contract (hold the line tightly) and the side shielding plate 502 to electromagnetically shield. The central controller switches the motor operation mode to energy-saving mode (i.e., the output power is reduced by 20%) until the line is repaired.

[0041] Next, the inert gas jet curtain generator 507 is started to spray inert gas (such as argon) toward the damaged point at the end of the curved line, forming a thick air curtain on the surface, covering the area around the damaged point, completely isolating the air and inhibiting metal oxidation during subsequent welding.

[0042] The force-bearing slider 515 slides in the cavity 514 as the pressure on the circuit surface changes, compressing the force-bearing spring 516 and triggering the trigger contact probe 513 signal:

[0043] If the pressure is too high (which may damage the insulation layer), the driving structure controls the outer protective plate 504 to rebound slightly, releasing the pressure through the elastic deformation of the spring to keep the pressure stable;

[0044] If the pressure is too low (not tightly fitting), the memory alloy ring 509 contracts a second time (by fine-tuning the heating power through the electric temperature controller) until the pressure reaches the standard.

[0045] Later, when the self-repair component 600 starts nano-welding or insulation spraying, the outer protective plate 504 maintains a micro-angle to follow the rotation, adapting to the bending posture of the line to ensure that the repair tool is perpendicular to the line. At this time, the trigger contact probe 513 continuously monitors the pressure to prevent the fitting deviation caused by mechanical vibration during the repair process.

[0046] After the repair is qualified, the electric temperature controller 508 stops heating, the memory alloy ring 509 returns to its original shape as the temperature drops, the clamping force on the line is released, the driving structure 501 reverses, the outer protective plate 504 resets to the initial angle, the inert gas injection stops, and the bending protection assembly 500 retracts with the universal adjustment rod 400, waiting for the next task.

[0047] The trigger contact probe 513 and the force-bearing slide 515 form a pressure feedback closed loop as a whole, so that when the contact member 506 touches the circuit, the trigger contact probe 513 senses the pressure distribution in real time. If there is an uneven situation with high pressure on the left and low pressure on the right, the drive structure 501 drives the outer protective plate 504 to deflect at a slight angle through the micro-servo motor. At the same time, the universal adjustment rod 400 synchronously fine-tunes the pitch or yaw angle to make the flexible plate completely fit the curvature of the circuit. When the pressure is too high, the outer protective plate 504 elastically rebounds through the force-bearing spring 516 to release the pressure, ensuring stable contact pressure. In the safe range, the insulation layer is prevented from being indented or scratched, and a "zero-damage" fit is achieved. The memory alloy ring 509 and the drive structure 501 cooperate to achieve arbitrary bending adaptation. When the electric temperature controller 508 is heated to the phase change temperature, the memory alloy ring 509 automatically shrinks and hugs the circuit, driving the side shielding plate 502 to fit the curved surface, and cooperates with the micro-angle rotation of the outer protective plate 504. The micro-angle rotation will not cause the outer protective plate 504 and the inner contact heat-resistant flexible plate 505, and can adapt to complex curved circuits with U-shaped and S-shaped curvature radii (such as dense wiring and rotating component slip ring circuits).

[0048] In some embodiments, according to Figure 1 、 Figure 7-10As shown, the self-repairing component 600 includes a main electromagnetic shielding plate 604, and the side shielding plate 502 slides and retracts inside the main electromagnetic shielding plate 604. The side end of the main electromagnetic shielding plate 604 is connected to a heat-resistant plate 601, and a sliding guide column 602 is installed on the surface of the heat-resistant plate 601. The outside of the sliding guide column 602 is slidably connected to a track rack 603.

[0049] A slot frame 700 is installed on the outer surface of the main electromagnetic shielding plate 604, and a telescopic guide rod 800 is installed on the inner side end of the slot frame 700. The side end of the telescopic guide rod 800 is connected to a magnetic connecting block 900, which is used to magnetically connect to the back side of the track rack 603. The magnetic connecting block 900 is set to an aluminum-nickel-cobalt alloy with a silver-plated layer on the surface. The outside of the magnetic connecting block 900 is wrapped with a copper-nickel alloy shielding shell. The copper-nickel alloy shielding shell is connected to the main electromagnetic shielding plate 604 through a conductive spring. A spiral conductive groove is set in the contact area between the track rack 603 and the sliding guide column 602, and an elastic conductive rubber strip is embedded in it. Comb-shaped conductive springs are distributed on the sliding contact surface between the main electromagnetic shielding plate 604 and the side shielding plate 502.

[0050] A displacement positioning frame 605 is slidably connected in the internal sliding groove of the track rack 603 . A micro servo driver 606 is installed on the side end of the displacement positioning frame 605 . The output end of the micro servo driver 606 passes through the displacement positioning frame 605 and is connected to a driving gear structure 607 .

[0051] The driving gear structure 607 is composed of two sets of meshing gears. Electromagnetic blockers are symmetrically installed on the left and right ends of the top gear. The side ends of the electromagnetic blockers are connected to the rotating member 608. The surface of the rotating member 608 is connected to the rod column 614. The side end of the rod column 614 is connected to the rotating rod 613. A mounting frame is installed on the outside of the rotating rod 613, and a connecting column 609 is installed at the front end of the mounting frame. After the rotating member 608 rotates, it drives the rod column 614 to form a spacing difference between the top and the bottom, so that the rotating rod 613 drives the mounting frame and the connecting column 609 to form an angular rotation.

[0052] A circular rotation driver is installed at the side end of the connecting column 609, a micro distance guide rail is installed at the side end of the circular rotation driver, a ball joint 611 and a micro electromagnetic guide rod 610 are installed at the bottom end of the micro electromagnetic guide rod 610, and the side end of the micro electromagnetic guide rod 610 is connected to a nano welding repair structure 612.

[0053] According to an embodiment of the present invention, when a sudden increase in line contact resistance is detected during motor startup (e.g., from 0.5Ω to 2Ω), the central controller immediately pauses startup, triggers the self-repair component 600 to perform nano-welding on the terminal, and simultaneously locks the inverter output frequency. After the repair is completed, the frequency is increased to the target frequency in a stable ramp, avoiding the impact of load restart caused by traditional shutdown repair. At this time, the electromagnetic shielding layer of the side shielding plate 502 is connected through comb-shaped conductive springs to form a shielding cavity.

[0054] The micro-servo driver 606 then drives the gear structure 607 to rotate, and the top gear drives the rotating member 608 to deflect. Through the linkage between the rod column 614 and the rotating rod 613, the connecting column 609 at the front end of the mounting frame is adjusted to an angle perpendicular to the damaged circuit, ensuring that the angle between the nano-welding repair structure 612 and the circuit surface is maintained at 90°±5°.

[0055] Then, the circular rotation driver at the side of the connecting column 609 drives the micro distance guide rail to move, and the ball joint 611 at the bottom cooperates with the micro electromagnetic guide rod 610 to achieve three-dimensional fine adjustment of the repair structure:

[0056] If the displacement is horizontal, it moves along the sliding guide column 602 and aligns with the center of the damaged point;

[0057] The vertical distance is adjusted by telescoping the micro electromagnetic guide rod 610 so as to keep the optimal working distance between the nano welding head and the circuit surface.

[0058] Then, the nano-welding repair structure 612 releases the silver nanoparticle solder paste, and the pulse heating module rapidly heats up, forming a solder joint under the protection of the inert gas curtain (synchronously activated by the bend protection component 500), thereby preventing heat diffusion from damaging surrounding circuits.

[0059] The system then switches to insulation spraying mode, spraying thermosetting insulation material (such as polyimide nanofibers) onto the repair structure, depositing it layer by layer along the damaged edge. The movement trajectory of the micro-distance guide rail is controlled to ensure that the thickness of the repaired insulation layer is consistent with the original circuit. Elastic conductive rubber strips (containing graphene fillers) are embedded in the spiral conductive grooves in the contact area between the track rack 603 and the sliding guide post 602. Even if the repair structure vibrates slightly, the conductive continuity of the shielding layer is maintained, preventing electromagnetic leakage from affecting the repair accuracy. After the repair is completed, the solder joint resistance is measured using a built-in conductive probe. If it fails to meet the requirements, a second re-welding process is triggered.

[0060] The main electromagnetic shielding plate 604 and the side shielding plate 502 are kept in contact with each other for a certain period of time to detect signal attenuation and ensure that the shielding function is not affected by the repair operation.

[0061] The overall structure utilizes the linkage of the micro servo driver 606 and the driving gear structure 607 to support free adjustment of the angle from 0 to 90 degrees. Through the cooperation of the rod column 614 and the rotating rod 613, the connecting column 609 carrying the repair tool remains perpendicular to the curved line, effectively solving the problem of repair posture of complex curved lines with large curvature radius, such as U-shaped and S-shaped lines. In addition, the ball joint 611 and the micro electromagnetic guide rod 610 form a three-dimensional fine-tuning mechanism, which can accurately align with the break point of the ultra-fine wire, achieve sub-millimeter positioning, and solve the problem of repair blind spots in densely spaced cables.

[0062] The wiring diagram of the inert gas jet curtain generator 507, the electric temperature controller 508, the detection sensor, and the distributed optical fiber sensor in the present invention is common knowledge in the art. Its working principle is a well-known technology, and its model is selected according to actual use. Therefore, the control method and wiring layout of the inert gas jet curtain generator 507, the electric temperature controller 508, the detection sensor, and the distributed optical fiber sensor will not be explained in detail.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A variable frequency control cabinet with intelligent monitoring and self-repair function, comprising a cabinet body, internal circuits, and a central controller, characterized in that: The cabinet further includes a guide rail and a self-repairing assembly (600), the guide rail being installed along the inner wall surface of the cabinet, the side end of the guide rail being slidably connected to an orientation calibration mechanical arm (100), the back side of the guide rail being installed with a lifting structure, the lifting structure and the guide rail being used to drive the orientation calibration mechanical arm (100) to operate in a full range according to the height of the cabinet, the internal circuit including a curved circuit end and a wiring end, the interior of the cabinet being paved with a distributed optical fiber sensor, and the surfaces of the curved circuit end and the wiring end being implanted with a detection sensor for identifying the location and type of the damage point, the orientation calibration mechanical arm A rack and pinion two-way stroke structure (300) is installed inside the side end of (100), and a universal adjustment rod (400) is installed on both side ends of the rack and pinion two-way stroke structure (300). A mounting end (200) is installed on the side end of the rack and pinion two-way stroke structure (300) for installing an electrical connection detection structure. A bending protection component (500) is connected to the bottom of the universal adjustment rod (400) for actively protecting the circuit in a bending state during welding adsorption. The bottom end of the bending protection component (500) is installed with a self-repairing component (600) for processing bending damage. The bending protection assembly (500) comprises a memory alloy ring (509), an inner contact heat-resistant flexible plate (505), and an outer protection plate (504); a trigger contact probe (513) is installed inside the inner contact heat-resistant flexible plate (505) for sensing the contact pressure between the inner contact heat-resistant flexible plate (505) and the internal circuit surface in real time; The self-repairing component (600) includes a main electromagnetic shielding plate (604), a side shielding plate (502) that slides and retracts inside the main electromagnetic shielding plate (604), a side end of the main electromagnetic shielding plate (604) is connected to a heat-resistant plate (601), a sliding guide column (602) is installed on the surface of the heat-resistant plate (601), and the outside of the sliding guide column (602) is slidably connected to a track rack (603).

2. The intelligent monitoring and self-repairing frequency conversion control cabinet according to claim 1 is characterized in that: The bending protection assembly (500) further includes a driving structure (501), the top of the driving structure (501) and the side end of the universal adjustment rod (400) are arranged relative to each other, the bottom of the driving structure (501) is rotatably connected to a transmission operating rod (511), the bottom end of each transmission operating rod (511) is connected to a rotating rod, and the rotating rod and the outer protection plate (504) are arranged relative to each other, and are used to drive the outer protection plate (504) to rotate at a micro-angle around the axis of the rotating rod to adapt to the change of the curvature radius of the bending line end.

3. The intelligent monitoring and self-repairing frequency conversion control cabinet according to claim 2 is characterized in that: An electric temperature controller (508) is installed at the side end of the driving structure (501), and a conductive member (503) is connected to the side of the electric temperature controller (508). The left and right ends of the bottom of the conductive member (503) are connected to the memory alloy ring (509). The side end of the memory alloy ring (509) is connected to a connecting end (512). A side shielding plate (502) is installed at the side end of the connecting end (512). The inner contact heat-resistant flexible plate (505) and the outer protective plate (504) An inert gas jet air curtain generator (507) is installed at the connection end for jetting inert gas during welding repair to form a thick air curtain on the surface of the curved line end to inhibit metal oxidation. A contact piece (506) is installed at the bottom end of the inner contact heat-resistant flexible plate (505). The trigger contact probe (513) sequentially passes through the inner contact heat-resistant flexible plate (505) and the contact piece (506), and its bottom end contacts the line surface. A cavity (514) is opened inside the outer protective plate (504).

4. The intelligent monitoring and self-repairing frequency conversion control cabinet according to claim 3 is characterized by: The cavity (514) is internally slidably connected to a force-bearing slide (515), the top of the force-bearing slide (515) is fastened to a force-bearing spring (516), the top of the force-bearing spring (516) is connected to the top of the cavity (514), and the force-bearing slide (515) is connected to a trigger-type contact probe (513). When the circuit surface pressure is transmitted to the force-bearing slide (515), the force-bearing spring (516) is compressed and a contact probe (513) signal is triggered, thereby realizing linear detection of contact pressure.

5. The intelligent monitoring and self-repairing frequency conversion control cabinet according to claim 1 is characterized in that: A slot frame (700) is installed on the outer surface of the main electromagnetic shielding plate (604), and a telescopic guide rod (800) is installed on the inner side end of the slot frame (700). The side end of the telescopic guide rod (800) is connected to a magnetic connection block (900) for magnetic connection with the back side of the track rack (603). The magnetic connection block (900) is set to an aluminum-nickel-cobalt alloy with a silver-plated surface. The outside of the magnetic connection block (900) is wrapped with a copper-nickel alloy shielding shell. The copper-nickel alloy shielding shell is connected to the main electromagnetic shielding plate (604) through a conductive spring. A spiral conductive groove is set in the contact area between the track rack (603) and the sliding guide column (602), and an elastic conductive rubber strip is embedded therein. Comb-shaped conductive springs are distributed on the sliding contact surface between the main electromagnetic shielding plate (604) and the side shielding plate (502).

6. The intelligent monitoring and self-repairing frequency conversion control cabinet according to claim 1 is characterized in that: A displacement positioning frame (605) is slidably connected in the internal sliding groove of the track rack (603), a micro servo driver (606) is installed at the side end of the displacement positioning frame (605), and an output end of the micro servo driver (606) passes through the displacement positioning frame (605) and is connected to a driving gear structure (607).

7. The intelligent monitoring and self-repairing frequency conversion control cabinet according to claim 6 is characterized in that: The driving gear structure (607) is composed of two sets of meshing gears, and electromagnetic blockers are symmetrically installed on the left and right ends of the top gear. The side ends of the electromagnetic blocker are connected to a rotating member (608), and a rod column (614) is connected to the surface of the rotating member (608). The side end of the rod column (614) is connected to a rotating rod (613). A mounting frame is installed on the outside of the rotating rod (613), and a connecting column (609) is installed at the front end of the mounting frame. After the rotating member (608) rotates, it drives the rod column (614) to form a spacing difference between the top and the bottom, so that the rotating rod (613) drives the mounting frame and the connecting column (609) to form an angular rotation.

8. The variable frequency control cabinet with intelligent monitoring and self-repair function according to claim 7, characterized in that: A circumferential rotation driver is installed at the side end of the connecting column (609), a micro distance guide rail is installed at the side end of the circumferential rotation driver, a ball joint (611) and a micro electromagnetic guide rod (610) are installed at the bottom end of the micro distance guide rail, and the side end of the micro electromagnetic guide rod (610) is connected to a nano welding repair structure (612).

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