Assembly ring splicing process assembly based on distribution network 10KV rack assembly

Abstract

The invention relates to the technical field of power distribution network overhead line construction, and discloses a 10KV rack assembly ring splicing process assembly based on a power distribution network. Comprising five continuous processes of digital preassembling and tolerance potential energy modeling, rough addressing based on vector difference, piezoelectric microvibration induction and potential energy minimization blind insertion, magnetic flux linkage interlocking and wire assembling and thermal-force coupling phase change fastening and whole life period monitoring. Micron-scale lossless automatic centering blind insertion is realized by utilizing the synergistic effect of magnetic field potential energy guiding and piezoelectric micro-vibration friction reduction, magnetic machine interlocking logic based on magnetic flux saturation is constructed, electrical connection can be performed after the structure is forcibly connected in place, and the risk of misoperation is eliminated. The technical problems that a traditional distribution network rack is low in construction efficiency, field assembly and alignment are difficult, connection nodes are prone to loosening and safety logic locking is lacked are effectively solved, and the intelligent level and intrinsic safety of distribution network construction are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of overhead line construction of distribution network, in particular to a 10KV gantry assembly and splicing process based on distribution network. BACKGROUND

[0002] With the continuous expansion of the construction scale of the distribution network and the increasing requirement of power supply reliability, the 10kV gantry as the core support node in the distribution network architecture, the construction quality and service stability are directly related to the safe operation of the power system. In the current distribution network engineering practice, the erection of the gantry mainly follows the traditional on-site assembly mode, that is, the construction personnel rely on manual visual alignment and manual tools to perform component splicing and electrical connection in the high-altitude environment. This operation mode is limited by the unstructured environment of the construction site and the discreteness of human operation, and gradually exposes a series of technical bottlenecks that need to be solved.

[0003] In terms of construction efficiency and process standardization, the traditional operation process has significant lag. Due to the lack of high-precision pre-assembly and tolerance compensation mechanism, the components often face size adaptation problems during on-site splicing. Construction personnel need to spend a lot of time on repeated lifting adjustment and polishing correction, resulting in a long construction period for a single gantry, directly prolonging the power outage window period of the distribution network, affecting normal power consumption of users. At the same time, the existing connection process mainly relies on rigid bolt fastening. This static connection method is difficult to adapt to the complex working conditions that the distribution network equipment faces for a long time. Especially in the case of large diurnal temperature difference or extreme weather conditions, the thermal expansion and contraction effect of metal components will cause periodic stress fluctuations at the connection node, thereby causing irreversible decay of bolt pretightening force and loosening of contact surface. This not only increases the subsequent operation and maintenance cost, but also lays a safety hazard of structural instability.

[0004] Moreover, the alignment process of the gantry cross arm and the support is usually in a blind insertion state, lacking effective guidance assistance and feedback mechanism, which may cause damage to the corrosion-resistant coating or generate assembly internal stress due to forced assembly, accelerating the corrosion and aging of the equipment. At present, there is a lack of mandatory logical interlocking between the electrical connection and the structure assembly process, and the construction sequence completely depends on the experience and responsibility of the operating personnel, which has the risk of misoperation that the structure is not completely locked before the wire connection. Although some modular or pre-assembled improvement schemes have appeared in the industry, they mainly focus on the physical form of block, and have not solved the problems of precise positioning and friction jam in the blind insertion process from the perspective of physical field cooperation. They also have not realized the passive and real-time closed-loop monitoring of the stress state of the connection node throughout its life cycle, and cannot meet the higher requirements of modern new power systems for intelligentization and intrinsically safe construction equipment. SUMMARY

[0005] In view of the deficiencies of the prior art, the application provides a kind of based on the assembly and splicing process of 10KV gantry assembly of distribution network, solve the low alignment accuracy of existing distribution network gantry construction site assembly and the problem that blind insertion is easy to jam, connection node is loose failure under extreme temperature difference condition, and lack of safety logic interlocking mechanism between structural connection and electrical connection in construction process.

[0006] To achieve the above object, the application is implemented by the following technical solutions: a kind of based on the assembly and splicing process of 10KV gantry assembly of distribution network, comprising the following steps: S1: obtain the geometric tolerance data and load deformation fingerprint of the modular component of the 10KV gantry of distribution network, to build a digital assembly reference model for guiding subsequent assembly; S2: based on the vector difference between the real-time position and target reference position of the modular component to be installed, guide the modular component into the coarse positioning area; S3: utilize the magnetic field potential energy guiding effect generated by the magnetic interface provided at the connection of the modular component, cooperate with the micro-vibration adjustment of the piezoelectric driving unit to reduce the contact friction, so that the modular component slides into the docking position with the lowest potential energy under the action of magnetic attraction to complete mechanical assembly; S4: after mechanical assembly in place, real-time monitor the magnetic flux change in the magnetic interface loop, only when the detected magnetic flux meets the preset saturation threshold, trigger the magnetic flux linkage interlocking logic, release the mechanical lock of the wire connection component integrated on the modular component, so as to allow the wire to be inserted into the wire connection component to complete the electrical connection; S5: lock the modular component with a fastener having shape memory characteristics, the fastener is configured to automatically adjust the fastening stress according to the change of environmental temperature, and at the same time, as a magnetic resistance element, feedback the local magnetic field change at the magnetic interface to realize real-time monitoring of the connection state.

[0007] Preferably, the specific steps of obtaining the geometric tolerance data and load deformation fingerprint of the modular component of the 10KV gantry of distribution network include: extract the surface point cloud data set of the mating surface of the modular component by using a three-dimensional laser scanning device , for any measured point in the set , calculate the Euclidean distance between it and the corresponding point of the standard design model, only when is satisfied, it is determined to be qualified, wherein is a preset tolerance threshold; apply a preset multiple of the rated load on the qualified modular component on the test bench, record the elastic modulus of the modular component under the action of load, generate a digital label containing geometric parameters and deformation fingerprint and bind it to the modular component.

[0008] Preferably, the specific step of guiding the modular component into the coarse positioning area based on vector difference comprises: Acquiring absolute reference coordinates by reading radio frequency identification tags embedded in the installation foundation Acquiring dynamic centroid coordinates by using a positioning unit integrated on the modular component Calculating real-time position deviation vectors Satisfying:

[0009] Continuously monitoring the real-time position deviation vectors, and determining that coarse positioning is completed and issuing a falling instruction when the condition is met, wherein is a coarse positioning accuracy threshold.

[0010] Preferably, before the modular component slides into the docking position, a static leveling step is further included: Acquiring real-time plane normal vectors fed back by piezoelectric driving units arranged on the installation foundation Calculating the included angle between the normal vectors and the gravity vector :

[0011] Driving the piezoelectric driving units to generate micro-displacement until the included angle is less than a preset inclination threshold.

[0012] Preferably, the specific step of reducing contact friction by cooperating with the piezoelectric driving units comprises: When it is monitored that the modular component enters the effective magnetic attraction range of the magnetic interface, activating the high-frequency micro-vibration mode of the piezoelectric driving units, applying micro-amplitude vibration of a specific frequency, and adjusting the vibration parameters so that the equivalent dynamic friction coefficient between the contact surface of the modular component and the magnetic interface satisfies the self-locking-free embedding condition: wherein is the half-cone angle of the tapered plug at the connection of the modular component.

[0013] Preferably, the specific step of triggering the magnetic flux linkage interlocking logic comprises: Setting the saturation magnetic flux of the magnetic interface circuit as and defining a safety factor , monitoring the real-time magnetic flux , and executing the following interlocking logic: When ​At the same time, maintain the mechanical locking state and use physical blocking components to block the inlet of the wire connection component; when At that time, the magnetic field attraction is used to drive the linkage mechanism to move, causing the physical blocking component to move away from the inlet.

[0014] Preferably, the wire connection component is a double-helix self-locking clamp with internal helical teeth, and after the mechanical lock is released, it further includes: Insert the wire into the double-helix self-locking clamp, and apply a tightening torque to the wire. satisfy When the time is right, the constant pressure spring locking mechanism inside the double-helix self-locking clamp is triggered, and an audible and visual warning signal is activated. This is the critical trigger torque.

[0015] Preferably, the specific steps of locking the modular component using fasteners with shape memory properties include: Bolts with internally encapsulated shape memory alloy sleeves are used as fasteners, and the fastening stress is adjusted based on the thermo-mechanical coupling constitutive relationship of the shape memory alloy. ;

[0016] in, Martensite volume fraction The changing elastic modulus, In response, For phase transition tensors, For ambient temperature, when Reduced When the preload is increased, the shrinkage stress generated by the phase change is used to compensate for the loss of preload.

[0017] Preferably, the specific steps for using the magnetoresistive element to feedback the local magnetic field change at the magnetic interface include: Using the magnetic flux leakage at the edge of the magnetic interface as an excitation source, an induction coil is arranged to monitor the fastener. When the fastener undergoes displacement or phase change, resulting in local magnetic flux leakage... When the voltage changes, the induced electromotive force output by the induction coil is collected. ;

[0018] Analyze the spectral characteristics of the induced electromotive force, and identify a loose or abnormal stress state when the rate of change exceeds the safety threshold.

[0019] Preferably, the cross arm body of the modular component is made of basalt fiber reinforced nylon composite material, the magnetic interface includes a tapered plug arranged at the end of the cross arm and a magnetic socket arranged at the top of the bracket, the surface of the tapered plug is covered with an anticorrosive conductive coating, and the magnetic socket is embedded with a neodymium iron boron permanent magnet ring.

[0020] The application provides a 10KV gantry assembly based on network distribution. 1、The application combines vector difference guidance with magnetic field potential guidance technology, and is assisted by the micro-vibration friction reduction mechanism of the piezoelectric driving unit, so that the hoisting process of the gantry module is converted into an automatic optimization process under the guidance of a physical field, the problems of low efficiency of traditional manual visual command and difficult blind insertion alignment are solved, installation deviation is automatically corrected by using physical field potential, and adaptive and accurate docking of the modular component under complex terrain and limited visual field is ensured.

[0021] 2、The application introduces a shape memory alloy fastener with thermal-force coupling constitutive characteristics, utilizes the shrinkage strain generated by the martensite phase change of the material in a low temperature environment, and establishes an active and adaptive adjustment mechanism for the environmental temperature and the fastening force, so that the problem of pre-tightening force attenuation caused by the thermal expansion and cold contraction physical properties of materials under extreme temperature difference in traditional rigid bolt connection is overcome, stress dynamic balance and structure stability of the connection node under all-weather working conditions are realized, and the risk of loosening in long-term operation is significantly reduced.

[0022] 1、The application constructs a magnetic flux linkage interlocking logic, directly maps the physical state of structure connection to the permission condition of electrical connection, forms a hardware level safety lock that the structure is not in place and the wire cannot be inserted, discards the excessive dependence on experience and responsibility of construction personnel in traditional process, forcibly standardizes the standardized construction sequence of structure locking first and electrical installation later by physical means, eliminates the hidden danger of misoperation from the root, and improves the intrinsic safety of distribution network construction.

[0023] 1、The application establishes the digital identity and assembly reference of the component by using three-dimensional laser scanning and load fingerprint input technology in the prefabrication stage through digital pre-assembly and tolerance potential modeling process, effectively eliminates the influence of component processing tolerance accumulation and stiffness difference on field assembly, avoids the common phenomenon of field polishing or rework caused by size mismatch in traditional process, and guarantees the consistency and traceability of gantry batch construction.

[0024] 1. The application utilizes the coupling relationship between the magnetic interface edge leakage magnetic field and the fastener displacement / phase change state, constructs a passive monitoring loop based on the variable reluctance principle, and reuses the magnetic structure of the interface as an excitation source, without deploying additional power supply sensors or complex strain gauges. The loosening or stress abnormality of the fastener can be sensed in real time by analyzing the frequency spectrum characteristics of the induced electromotive force, providing a low-cost, passive and highly reliable state sensing method for the whole life cycle operation and maintenance of the distribution network rack. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The product structure diagram of the application; Figure 2 The whole process preloading flowchart of the application; Figure 3 The overall flowchart of the application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be described below with reference to the drawings in the specification of the application. Obviously, the described embodiments are only a part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0027] Referring to Figure 1 , Figure 2 and Figure 3 , the embodiment of the application provides a 10KV rack assembly and splicing process based on distribution network, which includes the following steps: S1: Obtain the geometric tolerance data and load deformation fingerprint of the modular components of the distribution network 10KV rack, and construct a digital assembly reference model for guiding subsequent assembly. The specific steps of obtaining the geometric tolerance data and load deformation fingerprint of the modular components of the distribution network 10KV rack include: Using a three-dimensional laser scanning device to extract surface point cloud data set of the modular component fitting surface For any measured point in the set , calculate the Euclidean distance between it and the corresponding point of the standard design model, and only when is satisfied, it is determined to be qualified, wherein is a preset tolerance threshold; Apply a preset multiple of the rated load to the qualified modular component on the test bench, record the elastic deformation modulus of the modular component under the action of the load, generate a digital label containing geometric parameters and deformation fingerprint and bind it to the modular component; Specifically, the step is carried out in a controlled environment, eliminating initial geometric defects and physical performance deviations of the components, establishing a zero potential energy assembly reference, and using a high-precision three-dimensional laser scanner to obtain the measured point cloud data set of the modular components of the 10kV gantry For any measured point in the set , calculate the Euclidean distance between it and the corresponding point of the standard design model , the verification logic is set as: only when , the component geometric size is determined to be qualified, if the tolerance is exceeded, an alarm is given and the component is rejected, eliminating the risk of field adaptation from the source, and placing the qualified modular component on the hydraulic test bench to simulate the actual working condition and apply a predetermined multiple of the rated load. The displacement sensor records the elastic deformation displacement of the key nodes of the component under the action of the load, and calculates the elastic deformation modulus , the system packs the above geometric tolerance data and load deformation parameters to generate a unique digital label, which is physically bound to the component. The label constitutes the digital twin identity of the component, providing initial boundary conditions for subsequent field assembly.

[0028] S2: Based on the vector difference between the real-time position of the modular component to be installed and the target reference position, guide the modular component into the coarse positioning area. The specific steps of guiding the modular component into the coarse positioning area based on the vector difference include: Obtain the absolute reference coordinates by reading the radio frequency identification tag embedded in the installation foundation , calculate the real-time position deviation vector , meet:

[0029] Continuously monitor the real-time position deviation vector, and when the condition is met, it is determined that the coarse positioning is completed and a falling instruction is issued, where is the coarse positioning accuracy threshold; Specifically, this step is performed at the construction site, and the spatial positioning technology is used to guide the gantry module from the transportation state to quickly enter the assembly area. Before construction, read the radio frequency identification tag embedded in the concrete installation foundation to obtain the absolute reference coordinates of the site , as the origin or reference point of the global coordinate system. During hoisting, the Beidou / GPS positioning unit integrated in the center of mass of the modular component (such as the cross arm) feeds back the dynamic centroid coordinates in real time, and the control system calculates the real-time position deviation vector

[0030] ​The system displays a vector arrow on the terminal to guide the operator to move the crane boom, and continuously monitors the deviation vector module When the condition is met (where is the coarse positioning accuracy threshold), the system determines that the module has entered the effective capture range of the magnetic interface, issues a drop instruction, and automatically switches to the fine docking mode.

[0031] S3: Utilize the potential energy guiding effect of the magnetic field generated by the magnetic interface at the connection of the modular components, and cooperate with the micro-vibration adjustment of the piezoelectric driving unit to reduce contact friction, so that the modular components slide into the docking position with the lowest potential energy under the action of magnetic attraction to complete mechanical assembly. Before the modular components slide into the docking position, a static leveling step is also included: Obtain the real-time plane normal vector feedback by the piezoelectric driving unit arranged on the installation base Calculate the included angle between the normal vector and the gravity vector :

[0032] Drive the piezoelectric driving unit to generate micro-displacement until the included angle is less than the preset inclination threshold; The specific steps of cooperating with the micro-vibration adjustment of the piezoelectric driving unit to reduce contact friction include: When it is monitored that the modular component enters the effective magnetic attraction range of the magnetic interface, activate the high-frequency micro-vibration mode of the piezoelectric driving unit, apply micro-amplitude vibration of a specific frequency, and adjust the vibration parameters so that the equivalent dynamic friction coefficient between the contact surface of the modular component and the magnetic interface satisfies the self-locking embedding condition: where is the half-cone angle of the tapered plug at the connection of the modular component; Specifically, before the module contacts, use the piezoelectric driving unit on the installation base for attitude adjustment, the system reads the inclination sensor data, obtains the normal vector of the current installation plane, and calculates the included angle between the normal vector and the gravity vector :

[0033] The control algorithm drives the piezoelectric unit to generate micron-level displacement until is less than the preset threshold, ensuring the levelness of the plug-in reference surface, and the connection interface of the modular component is designed as a "tapered plug + magnetic socket" structure, the surface of the tapered plug is coated with a nano-zinc infiltration coating to provide a smooth contact surface, and a neodymium-iron-boron permanent magnet ring is embedded in the magnetic socket. When the plug approaches the socket, the magnetic field generates attractive potential ​Under the combined force of gravity and magnetic force, the system tends to evolve to the lowest point of total potential energy, achieving automatic centering. To prevent self-locking due to excessive static friction when the plug contacts the socket, the system activates the high-frequency micro-vibration mode of the piezoelectric drive unit, applying a specific frequency of micro-vibration that converts the static friction between the contact surfaces into dynamic friction, significantly reducing the equivalent friction coefficient When the self-locking embedding condition is met , the modular component smoothly slides into the bottom, achieving mechanical assembly with micron-level precision.

[0034] S4: After mechanical assembly is in place, real-time monitoring of the magnetic flux change in the magnetic interface circuit is performed. Only when the detected magnetic flux meets the preset saturation threshold, the magnetic flux linkage interlocking logic is triggered, the mechanical lock on the wire connection component integrated on the modular component is released, allowing the wire to be inserted into the wire connection component to complete the electrical connection. The specific steps of triggering the magnetic flux linkage interlocking logic include: Setting the saturation magnetic flux of the magnetic interface circuit to , and defining the safety factor , monitoring the real-time magnetic flux , executing the following interlocking logic: when , the mechanical locking state is maintained, and the wire inlet of the wire connection component is blocked by a physical barrier, when , the physical barrier is removed from the wire inlet by driving the linkage mechanism with magnetic field attraction force. The wire connection component is internally provided with a double helix self-locking wire clamp with inclined teeth. After the mechanical lock is released, it also includes: inserting the wire into the double helix self-locking wire clamp, when the tightening torque on the wire meets , the constant pressure spring locking mechanism inside the double helix self-locking wire clamp is triggered, and the audible and visual prompt signal is activated, wherein is the critical trigger torque; Specifically, the magnetic flux threshold logic determines to arrange a magnetic sensor in the magnetic circuit of the magnetic socket, real-time monitoring the magnetic flux Φ(t), setting the saturation magnetic flux threshold and the safety factor , the logic criterion is as follows: if : indicates that the plug is not fully fitted, the magnetic circuit air gap is large, and the connection is unqualified, if This indicates that the plug is fully inserted, the magnetic circuit is closed, the structural connection is qualified, and the system is equipped with a physical linkage mechanism. One end of the physical linkage mechanism is controlled by the magnetic attraction, and the other end extends into the inlet of the wire connection component as a physical blocking element. When the magnetic flux is not up to standard, the linkage is in the extended state under the action of the spring force, physically blocking the inlet and preventing the worker from inserting the wire. When the magnetic flux is up to standard, the strong magnetic attraction overcomes the spring force and pulls the linkage, causing the blocking element to retract from the inlet, releasing the lock, and the instantaneous self-locking connection is established. After the lock is released, the wire is inserted into the double helix self-locking clamp. The double helix self-locking clamp has 45° helical teeth and a constant pressure spring inside. When the tightening torque applied to the wire is... Exceeding the critical value When the internal ratchet mechanism is activated, it triggers the constant pressure spring to release instantaneously and lock the wire, while simultaneously triggering an audible and visual indicator to confirm that the electrical connection is complete.

[0035] S5: Modular components are locked using fasteners with shape memory properties. The fasteners are configured to automatically adjust their tightening stress according to changes in ambient temperature and simultaneously act as magnetoresistive elements to feedback local magnetic field changes at the magnetic interface for real-time monitoring of the connection status. Specific steps for locking modular components using fasteners with shape memory properties include: using bolts with internally encapsulated shape memory alloy sleeves as fasteners, and adjusting the tightening stress based on the thermo-mechanical coupling constitutive relationship of the shape memory alloy. ;

[0036] in, Martensite volume fraction The changing elastic modulus, In response, For phase transition tensors, For ambient temperature, when Reduced When increasing, the shrinkage stress generated by the phase change is used to compensate for the loss of preload; The specific steps for using a magnetoresistive element to feedback local magnetic field changes at the magnetic interface include: utilizing the magnetic flux leaking from the edge of the magnetic interface as an excitation source, arranging an induction coil to monitor the fastener, and when the fastener undergoes displacement or phase change, causing local magnetic flux changes... When the voltage changes, the induced electromotive force output by the induction coil is collected. ;

[0037] Analyze the spectral characteristics of the induced electromotive force, and identify loosening or abnormal stress state when the rate of change exceeds the safety threshold; Specifically, bolts with internally encapsulated Cu-Al-Ni shape memory alloy sleeves are used as fasteners. This material exhibits a thermo-mechanical coupling constitutive relationship.

[0038] wherein is the volume fraction of martensitic phase, in low temperature environment (such as-30°C), the conventional metal contraction leads to the decrease of pre-tightening force, while the SMA material induces martensitic phase transition due to temperature decrease, resulting in significant contraction strain, thus actively increasing the axial recovery stress, compensating the loss of pre-tightening force, ensuring the connection reliability under extreme temperature difference, using the magnetic flux leaked by the magnetic interface edge as a natural excitation source, without external power supply, arranging an induction coil around the fastener, the SMA bolt as a variable reluctance element in the magnetic circuit, when it occurs slight displacement (looseness) or lattice phase transition (stress change), it will change the local magnetic field distribution, according to Faraday's law of electromagnetic induction, the induction coil outputs induced electromotive force By collecting and analyzing the spectral features of the bolt, the system can identify the loosening trend or abnormal stress state of the bolt, realizing passive and online health monitoring throughout the life cycle.

[0039] The cross arm body of the modular component is made of basalt fiber reinforced nylon composite material, the magnetic interface includes a tapered plug arranged at the end of the cross arm and a magnetic socket arranged at the top of the bracket, the surface of the tapered plug is covered with a corrosion-resistant conductive coating, and the magnetic socket is embedded with a neodymium iron boron permanent magnet ring.

[0040] In summary, first, in the pre-installation stage, the geometric tolerance and deformation fingerprint of the component are input by three-dimensional laser scanning and load simulation to construct a digital assembly reference, the component is guided into the coarse positioning area by reading the vector difference of the basic RFID and module positioning data on the construction site, then the static leveling of the piezoelectric driving unit and the high-frequency micro-vibration friction reduction mechanism cooperate with the potential energy guiding action of the magnetic interface to drive the modular component to automatically slide into the potential energy minimum point to complete mechanical assembly, on this basis, the system monitors the magnetic flux of the interface in real time, only when the magnetic flux is saturated and the structure connection is reliable, the magnetic force linkage mechanism is triggered to release the mechanical locking of the double helix self-locking wire clamp, allowing the wire to be inserted and realizing instantaneous electrical self-locking through torque triggering, finally, the fastener packaged with a shape memory alloy sleeve actively compensates the pre-tightening force through martensitic phase transition contraction according to the change of environmental temperature, and the local magnetic field change caused by the change of the state of the fastener is monitored by the induction coil, realizing passive closed-loop monitoring of the connection node throughout the life cycle.

[0041] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A 10KV gantry assembly based on the network configuration assembly joint splicing process, characterized by, The method comprises the following steps: S1: Obtain the geometric tolerance data and load deformation fingerprint of the modular components of the 10KV gantry, and build a digital assembly reference model for guiding subsequent assembly; S2: Based on the vector difference between the real-time position and the target reference position of the modular components to be installed, guide the modular components into the coarse positioning area; S3: Use the magnetic field potential energy generated by the magnetic interface at the connection of the modular components to guide the reduction of contact friction by the piezoelectric drive unit, and make the modular components slide into the docking position with the lowest potential energy under the action of magnetic attraction to complete mechanical assembly; S4: After mechanical assembly, real-time monitoring of the magnetic flux change in the magnetic interface loop is performed, and only when the detected magnetic flux meets the preset saturation threshold, the magnetic flux linkage interlocking logic is triggered to release the mechanical lock of the wire connection component integrated on the modular component, thereby allowing the wire to be inserted into the wire connection component to complete the electrical connection; S5: Lock the modular components with fasteners with shape memory characteristics, which are configured to automatically adjust the fastening stress according to the change of environmental temperature, and at the same time, as a magnetic resistance element, feedback the local magnetic field change at the magnetic interface to realize real-time monitoring of the connection state.

2. The assembly jig according to claim 1, wherein The specific steps of obtaining the geometric tolerance data and load deformation fingerprint of the modular components of the 10KV gantry include: extracting a set of surface point cloud data of the modular component mating face using a three-dimensional laser scanning device , for any measured point in the set , calculating the Euclidean distance between it and the corresponding point of the standard design model , determining qualified only when , wherein is a preset tolerance threshold Apply a preset multiple of the rated load to the qualified modular components on the test bench, record the elastic deformation modulus of the modular components under the action of the load, generate a digital label containing geometric parameters and deformation fingerprint, and bind it to the modular components.

3. The assembly jig according to claim 1, wherein The specific steps of guiding the modular components into the coarse positioning area based on vector difference include: By reading radio frequency identification tags embedded in the installation base, absolute reference coordinates are acquired , with the positioning unit integrated on the modular component feeding back dynamic center of mass coordinates , calculating real-time position deviation vectors , satisfying: continuously monitoring the real-time position deviation vector, and when the condition is met, determining that the coarse positioning is completed and issuing a falling command, wherein is a coarse positioning accuracy threshold.

4. The assembly jig according to claim 1, wherein, Before the modular components slide into the docking position, a static leveling step is also included: Obtaining real-time plane normal vector feedback from a piezoelectric drive unit mounted on a mounting base , calculating an angle between the normal vector and a gravity vector :​ driving the piezoelectric driving unit to generate a micro displacement until the included angle is less than a preset inclination threshold.

5. The assembly jig according to claim 1, wherein The specific steps of cooperating with the piezoelectric drive unit to reduce the micro-vibration adjustment of the contact friction include: When the modular component is detected to enter the effective magnetic attraction range of the magnetic interface, the high-frequency micro-vibration mode of the piezoelectric driving unit is activated to apply micro-vibration of a specific frequency, and the vibration parameters are adjusted so that the equivalent dynamic friction coefficient between the modular component and the contact surface of the magnetic interface The self-locking embedding condition is satisfied: Wherein is the half-cone angle of the tapered plug at the connection of the modular component.

6. The assembly jig according to claim 1, wherein The specific steps of triggering the magnetic flux linkage interlocking logic include: Setting the saturation magnetic flux of the magnetic interface circuit to and defining a safety factor monitoring the real-time magnetic flux executing the following interlock logic: When the mechanical locking state is maintained, and the wire inlet of the wire connecting component is shielded by the physical blocking piece; When the physical barrier is withdrawn from the wire entry port by driving the linkage mechanism with magnetic field attraction.

7. The assembly jig according to claim 1, wherein, The wire connection component is a double helix self-locking wire clamp with internal bevel teeth, and after the mechanical lock is released, it also includes: The wire is inserted into the double helix self-locking wire clamp, when the tightening torque applied on the wire is met , the constant pressure spring locking mechanism inside the double helix self-locking wire clamp is triggered, and the audible and visual prompt signal is activated, wherein is the critical triggering torque.

8. The assembly jig according to claim 1, wherein, The specific steps of locking the modular components with fasteners with shape memory characteristics include: Bolts with a shape memory alloy sleeve encapsulated inside are used as the fasteners, and the fastening stress is adjusted based on the thermal-mechanical coupling constitutive relation of the shape memory alloy ; wherein, is the elastic modulus as a function of the martensite volume fraction is the elastic modulus as a function of the martensite volume fraction is the strain, is the phase transformation tensor, is the ambient temperature, when is the phase transformation tensor, is the phase transformation tensor, when the pre-tension loss is compensated by the contraction stress generated by the phase transformation.

9. The assembly jig according to claim 1, wherein, The specific steps of feeding back the local magnetic field change at the magnetic interface as a magnetic resistance element include: The magnetic interface edge leakage magnetic flux is used as an excitation source, an induction coil is arranged to monitor the fastener, and when the fastener is displaced or phase changed to cause local magnetic flux change, the induced electromotive force output by the induction coil is collected ; Analyze the frequency spectrum characteristics of the induced electromotive force, and identify the loose or stress abnormal state when the change rate exceeds the safety threshold.

10. The assembly jig according to claim 1, wherein, The cross arm body of the modular component is made of basalt fiber reinforced nylon composite material, the magnetic interface includes a tapered plug arranged at the end of the cross arm and a magnetic socket arranged at the top of the bracket, the surface of the tapered plug is covered with a corrosion-resistant conductive coating, and the magnetic socket is embedded with a neodymium iron boron permanent magnet ring.

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