Special corner connector assembly mounting process for indoor quick-mounting system

Abstract

The invention relates to the technical field of decoration engineering of buildings, and discloses a special corner connector assembly mounting process for an indoor quick-mounting system, which comprises the following steps of: embedding a corner connector assembly with a microscopic groove array into a cavity at the end part of a sectional material component, applying symmetrical extrusion load by adopting a rolling loading mechanism, and inducing the material of the sectional material component to generate local plastic rheology; according to the method, a pulsating pressure induction material is utilized to fill a microscopic groove, the connection property is converted from friction constraint to physical geometric locking, and a non-uniform-section plastic rheological layer is generated on a matching interface. And in cooperation with an ultrasonic vibration field and an electric signal feedback compensation mechanism, integrated anchoring of connecting nodes is achieved, and then the anti-seismic performance and long-term stability of the mounting structure are improved.

Description

Technical Field

[0001] This invention relates to an installation process for corner bracket components specifically designed for indoor quick-installation systems, belonging to the field of building decoration technology. Background Technology

[0002] Current indoor quick-installation systems utilize the modular combination of lightweight profile frames and decorative panels to achieve rapid division of building space. The keel profiles are connected through corner bracket components, and self-tapping screws or elastic clips are commonly used for fastening or positioning. The mechanical constraint force generated by external fasteners is used to fix the corner brackets in the profile cavity.

[0003] The wall thickness of aluminum alloy or light steel keel profiles used in interior decoration is typically between 0.8mm and 1.5mm, which limits the profile's ability to withstand local compressive stress. The point-like force generated by screw tightening causes stress concentration at the thread engagement points of the thin-walled material, leading to localized tearing or slippage failure. Furthermore, during long-term building operation, vibrations from air conditioning systems or thermal expansion and contraction caused by environmental temperature differences result in micron-level stress relaxation at the point-contact fastening interfaces, inducing structural resonance noise and causing displacement of connection nodes. Improvements such as increasing the density of fastening points or using structural adhesives for reinforcement can further address this issue. This weakens the structural continuity of the profile interface, or makes large-scale application difficult because chemical bonding does not meet the requirements of dry operation on the decoration site. For example, the utility model patent CN213062529U discloses a prefabricated interior wall panel quick-installation system for modular buildings. It uses matching hangers and L-shaped adapters to achieve wall panel anchoring and positioning. It essentially relies on discrete physical stacking and rigid locking. Due to the lack of precise guidance on the rheological process of the connection interface and feedback compensation mechanism for material characteristics, it cannot eliminate assembly gaps at the micro level, and it is difficult to cope with the connection quality fluctuation caused by the batch hardness dispersion of the profile. There is a risk of slippage under dynamic load environment.

[0004] Therefore, the technical problem to be solved by this invention is how to construct a high-strength physical anchoring mechanism that eliminates assembly gaps and ensures the integrity of thin-walled profile interfaces while maintaining on-site installation efficiency. Summary of the Invention

[0005] To address the problems mentioned in the background art, the technical solution of the present invention is as follows: An installation process for corner bracket components specifically for indoor quick-installation systems, comprising the following steps:

[0006] Step S1: The corner bracket assembly with a micro-groove array is embedded into the end cavity of the profile component, so that the outer surface of the corner bracket assembly and the inner surface of the profile component form a mating interface.

[0007] Step S2: By applying a symmetrical extrusion load with vector counteracting on both sides of the overlapping area of ​​the profile component and the corner bracket assembly through the rolling loading mechanism, the material of the profile component is induced to produce local plastic flow in the direction of the micro-groove array.

[0008] Step S3: Obtain the real-time axial displacement of the rolling loading mechanism, and control the amplitude of the symmetrical extrusion load to generate periodic pulsations based on the real-time axial displacement, so as to generate a non-uniform cross-section plastic rheological layer at the mating interface, so as to form a geometric locking structure between the profile component and the corner bracket assembly.

[0009] Step S4: Apply a high-frequency ultrasonic vibration field with a frequency of 20kHz to 40kHz to the mating interface to reduce the rheological resistance of the profile component material and to form an anchoring system with residual prestress in the non-uniform cross-section plastic rheological layer inside the mating interface.

[0010] Step S5: A standard pulse excitation signal is superimposed on the electrical signal sequence driving the rolling loading mechanism. The damping response waveform of the electrical signal sequence to the standard pulse excitation signal is detected. The attenuation coefficient of the damping response waveform is extracted as a feedback characteristic parameter. Based on the feedback characteristic parameter, the pulsation amplitude of the symmetrical extrusion load is compensated in real time.

[0011] Preferably, the process of controlling the amplitude of the symmetrical extrusion load to generate periodic pulsations in step S3 includes: setting the pulsation frequency of the symmetrical extrusion load to be positively correlated with the travel speed of the rolling loading mechanism, so that the non-uniform cross-section plastic rheological layer forms an interlocking mark with equally spaced peaks and troughs on the mating interface; the peak depth of the wavy interlocking mark matches the depth of the micro-groove array, and a physical anti-reverse structure perpendicular to the axial travel direction of the profile component is constructed on the mating interface.

[0012] Preferably, the process of applying a high-frequency ultrasonic vibration field in step S4 includes: applying mechanical waves to the pressure surface of the profile component through a transducer integrated inside the rolling loading mechanism, thereby increasing the filling rate of the material into the micro-groove array using mechanical waves.

[0013] Preferably, the superposition process of the standard pulse excitation signal in step S5 includes: superimposing a square wave voltage pulse with a period of 2ms on the electrical signal sequence every 50ms, extracting the attenuation coefficient of the damping response waveform, and determining the material filling density of the mating interface based on the feedback characteristic parameters.

[0014] Preferably, step S5 further includes: comparing the feedback feature parameter with a preset interface filling threshold; if the feedback feature parameter exceeds the preset interface filling threshold, increasing the static reference pressure value of the symmetrical extrusion load applied in step S3 until the feedback feature parameter is within the range of the preset interface filling threshold.

[0015] Preferably, the path for applying symmetrical compressive load in step S2 includes: adopting a dual-sided synchronous opposing drive mode to make the compressive stress vectors acting on the opposite sides of the profile member on the same horizontal axis, thereby offsetting the plastic rheological internal stress moments generated on the opposite sides of the profile member and maintaining the neutral layer of the profile member section at the geometric center position.

[0016] Preferably, the micro-groove array of the corner code assembly includes: a grid-like groove formed by laser cold processing on the mating surface of the corner code assembly; the edge of the grid-like groove has an acute-angled cut surface, which is used to generate micro-shear resistance to the flowing material in step S2, thereby improving the pull-out strength of the geometric locking structure in the axial travel direction of the profile component.

[0017] Preferably, in step S5, the interfacial density index of the mating interface is calculated based on the following formula. : ,in, The measured amplitude of the damped response waveform is given. The original amplitude of the standard pulse excitation signal; when the interface density index When the speed is below the preset locking threshold, the rolling loading mechanism is slowed down in the axial direction of the profile component.

[0018] Preferably, after step S4, the method further includes step S6, applying a reverse preload to the edge of the rolling deformation zone of the profile component, so that the non-uniform cross-section plastic rheological layer is under compressive stress under natural cooling, in order to offset the alternating load generated by vibration on the profile component.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In the installation of corner bracket components, the interface between the profile and the corner bracket is subjected to compressive stress to induce local plastic flow, causing the profile material to flow towards the groove on the corner bracket surface and generate linear interlocking marks. This transforms the traditional point-like stress state into a continuous linear interference fit, avoiding the risk of local tearing of thin-walled profiles under screw fastening mode. The adaptive flow of the material fills the assembly gap, enabling the connection node to form an anchoring system with a stable residual prestress field, thereby improving the connection stiffness of the frame structure under dynamic load.

[0021] 2. By utilizing a spatial phase modulation mechanism, the rolling pressure is periodically pulsated and adjusted with the displacement, generating a non-uniform cross-section plastic rheological layer with wavy undulations at the contact interface between the profile and the corner bracket. This transforms the connection property from a simple friction constraint to a geometric locking with physical resistance elements. Without compromising the overall strength of the thin-walled profile, a displacement barrier against the axial slippage of the profile is constructed, enhancing the reliability of the keel system in coping with environmental vibration and temperature stress.

[0022] 3. The synchronous symmetrical rolling process is used to apply a vector-opposing compressive stress field to the opposite sides of the profile. The internal stress moments generated by the plastic flow on both sides cancel each other out, maintaining the neutral layer of the profile section at the geometric center position. This suppresses the bending or torsional deformation that thin-walled profiles are prone to under local high pressure, ensuring the morphological accuracy of the large-span quick-assembly frame during installation and eliminating the need for manual leveling or additional limiting mechanisms in the later stage. Attached Figure Description

[0023] Figure 1 This is a flowchart illustrating the installation process of the corner code component for the combined field of pulsating pressure and ultrasound of the present invention.

[0024] Figure 2 This is a schematic diagram of the installation process closed-loop control system for damping response feedback according to the present invention. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0026] This invention provides an installation process for corner bracket components specifically designed for indoor quick-installation systems. The process involves embedding corner bracket components with a micro-groove array into the end cavity of a profile component, and applying a symmetrical compressive load using a rolling loading mechanism. This induces localized plastic rheology in the profile component material. Simultaneously, the amplitude of the compressive load is adjusted based on the real-time axial displacement of the rolling loading mechanism to generate a periodic pulsating pressure field. This results in the formation of a non-uniform cross-section plastic rheological layer at the mating interface. This is further enhanced by a high-frequency ultrasonic vibration field (20kHz to 40kHz) and an electrical signal feedback compensation mechanism, achieving integrated anchoring of the connection nodes. Since the wall thickness of aluminum alloy or light steel keel profiles used in interior decoration is typically... to The limited capacity of the profile to withstand local compressive stress due to this limitation is addressed in this invention. In step S1, a corner bracket assembly with a micro-groove array is embedded into the end cavity of the profile component, forming a mating interface between the outer surface of the corner bracket assembly and the inner surface of the profile component. The mating surface of the corner bracket assembly is formed into a grid-like groove through laser cold processing. The edges of the grid-like grooves have acute-angled cut surfaces to generate micro-shear resistance during subsequent material flow, thereby initially establishing the positioning basis of the geometric locking structure at the physical level. This is because lightweight profiles are prone to bending or torsional deformation under unilateral high pressure, which can damage them. To ensure the flatness of the quick-assembly frame, the system employs the following procedure in step S2: A rolling loading mechanism with a dual-sided synchronous opposing drive mode is activated. Symmetrical compressive loads with opposing vectors are applied to the overlapping areas of the profile component and the corner bracket assembly on opposite sides. This ensures that the compressive stress vectors acting on opposite sides of the profile component are aligned on the same horizontal axis. By counteracting the plastic flow internal stress moments generated on opposite sides of the profile component, the neutral layer of the profile component's cross-section is maintained at its geometric center. This causes the material of the profile component to undergo localized plastic flow towards the micro-groove array. This procedure utilizes a symmetrical stress field to counteract the risk of structural instability during processing.

[0027] To address the technical challenge of the slip threshold upper limit of the flat interference interface formed by linear rolling when dealing with the axial shear force of the profile, the present invention obtains the real-time axial displacement of the rolling loading mechanism in step S3. Based on the real-time axial displacement control, the amplitude of the symmetrical extrusion load is periodically pulsated, causing the load amplitude to be sinusoidally modulated with the displacement. This generates a non-uniform cross-section plastic rheological layer with equally spaced peaks and troughs at the mating interface. The peak depth of the wavy interlocking marks matches the depth of the micro-groove array, constructing a physical anti-reverse structure against axial slippage of the profile without compromising the overall strength of the thin-walled profile, thus changing the connection nature from frictional constraint to geometric locking. Since high-strength light steel profiles have high rheological resistance at room temperature, to address this bottleneck, the system applies a high-frequency ultrasonic vibration field of 20kHz to 40kHz to the mating interface in step S4. A transducer integrated within the rolling loading mechanism applies mechanical waves to the pressure surface of the profile component, reducing the rheological resistance of the profile material through ultrasonic softening effect. To counteract the amplitude suppression effect of extrusion loads above 3.0 kN on the ultrasonic transducer, an impedance phase tracking compensation mechanism is introduced: the control unit monitors the phase angle of the transducer drive end in real time. When the symmetrical extrusion load increases by 0.5 kN, the system automatically increases the pulse width modulation duty cycle of the transducer drive circuit by 2.5%, thereby increasing the electromagnetic energy input to maintain the amplitude stability of the mechanical wave output end. Experiments show that within the load fluctuation range of 3.0 kN to 5.0 kN, this compensation mechanism can control the micro-amplitude fluctuation of the transducer surface within the effective working band of 15 μm to 25 μm, so that the non-uniform cross-section plastic rheological layer forms an anchoring system with residual prestress inside the mating interface, thereby enhancing the affinity between dissimilar metal interfaces and eliminating processing residual stress.

[0028] The rolling loading mechanism integrates the transducer through node support. The output end of the transducer amplitude rod is interference-fitted with the inner cylindrical surface of the rolling wheel. The radial load generated by the symmetrical extrusion load is borne by a heavy-duty radial bearing installed outside the transducer housing and transmitted to the outer ring of the rolling wheel. This makes the high-frequency ultrasonic vibration field and the symmetrical extrusion load coaxially coupled in space, maintaining the neutral layer of the profile component section at the geometric center position. The mechanical wave acoustic flow effect induces the material to fill the deep layer of the grid-like groove.

[0029] To identify inadequate filling defects within the rheological layer in real time under construction site conditions, the system executes the feedback compensation procedure shown in step S5. A standard pulse excitation signal is superimposed onto the electrical signal sequence driving the rolling loading mechanism. The damping response waveform generated by the electrical signal sequence in response to the standard pulse excitation signal is detected. The superposition procedure involves superimposing a square wave voltage pulse with a period of 2ms onto the electrical signal sequence every 50ms. The attenuation coefficient of the damping response waveform is extracted as a feedback characteristic. A current sensor with a sampling frequency of not less than 100kHz is used to acquire the driving electrical signal sequence. A second-order Butterworth bandpass filter with a center frequency of 500Hz is used to filter out the 50Hz power frequency component and harmonic noise generated by the driving circuit. The processed current signal is compared with the original standard pulse excitation signal in the time domain using a sliding window cross-correlation algorithm. The envelope peak value generated by the cross-correlation operation is extracted as the induced voltage peak value of the damping response waveform within the preset sampling window. In the specific underlying control algorithm, the system sets the start time of the feature sampling window to 0.1ms after the rising edge of the standard pulse excitation signal, and the width of the sampling window is fixed at 3.0ms. The electrical signal acquisition instrument stores 300 original sampling points in each sampling window through a ring buffer, and uses a second-order Butterworth bandpass filter with a center frequency of 500Hz and a sampling frequency of 100kHz for real-time noise reduction. The maximum value of the voltage envelope in the 3.0ms window is extracted as the measured amplitude, and the average energy loss in the previous 3.0ms window is compared synchronously to realize the extraction of interface damping features under strong current load background.

[0030] Interface density index The quantitative relationship between the physical filling depth and the physical filling depth is established by calibration. A rolling pressing experiment is performed under a preset pressure gradient, and an interfacial metallographic sample is prepared. The vertical depth of the material filling the micro-groove array is measured using a scanning electron microscope, and the relationship between the vertical depth and the measured amplitude is established. and original amplitude ratio The corresponding data between them is calculated by the control unit in real time. The value retrieves the fill percentage; the fill percentage is lower than... When static reference pressure compensation is added, the interfacial density index of the mating interface is calculated based on the following formula. : ,in, The density index of the interface. The measured amplitude of the damped response waveform is given. The original amplitude of the standard pulse excitation signal; when the interface density index When the speed is below the preset locking threshold, the rolling loading mechanism is slowed down in the axial direction of the profile component, or the static reference pressure value of the symmetrical extrusion load is increased for real-time compensation until the feedback characteristic parameter is within the preset interface filling threshold range. This mechanism combines the verification of connection quality with the construction process to ensure that the physical tightness of each installation node meets the safety standards for long-term service. To address the risk of instability caused by unbalanced pressure on the profile in step S2, the two sets of actuators of the rolling loading mechanism are driven in a linked manner to control the difference in their output pressure amplitude within 2% of the preset loading reference value, and the coaxiality deviation of the axes of the two sets of actuators in space is no more than 0.05mm. The system dynamically adjusts the pressure compensation by collecting the drive current of the actuators on both sides in real time and calculating the load difference, so as to offset the unilateral disturbance load during dynamic loading and maintain the load balance of the processing interface.

[0031] Example 1: In an engineering scenario involving the installation of lightweight partition walls in high-rise buildings, the connection nodes between lightweight aluminum alloy profiles with a wall thickness of 1.0mm and corner bracket components exhibit a tendency for displacement and slippage at the connection interface due to the continuous vibration load generated by the air conditioning system. This induces resonance noise in the frame structure. To address this challenge, this installation process utilizes surfaces with a depth of [insert depth here, likely related to laser cold processing]. The corner bracket assembly, with its grid-like groove array, is embedded into the end cavity of the profile component to form an initial mating interface. A rolling loading mechanism is then used to apply pressure to the overlapping areas of the profile component and the corner bracket assembly on both sides. Symmetrical compressive load, and synchronously applied at a frequency of The high-frequency ultrasonic vibration field generates an ultrasonic softening effect that reduces the rheological resistance of the profile component material. The rolling loading mechanism obtains real-time axial displacement. And based on real-time axial displacement Adjusting the amplitude of the symmetrical extrusion load generates a periodic pulsating pressure field, and the material of the profile component flows towards the grid-like groove array on the surface of the corner code component under the drive of the pulsating pressure field.

[0032] In the process of generating a non-uniform cross-section plastic rheological layer at the interface, this process is performed every [time period missing]. Superimpose the original amplitude onto the driving signal sequence. for The standard pulse excitation signal is used to detect the damped response waveform of the electrical signal sequence to the standard pulse excitation signal, and the measured amplitude is extracted. for The interface density index is determined based on the following formula. : ,in, The density index of the interface. The measured amplitude of the damped response waveform is given in units of 1 / 2. , The original amplitude of the standard pulse excitation signal, in units of... The interface density index was measured. for This data confirms that the non-uniform cross-section plastic rheological layer is densely filled, and the generated non-uniform cross-section plastic rheological layer constructs a physical anti-reverse structure at the mating interface. This structure maintains the fixed position of the connection node under vibration load, eliminating interface slippage caused by assembly gaps. When the alternating load generated by vibration on the profile component exceeds the preset threshold, a reverse preload is applied to the edge of the rolling deformation zone of the profile component, putting the non-uniform cross-section plastic rheological layer under compressive stress, eliminating assembly gaps and suppressing structural resonance. This process, through the synergistic effect of pulsating pressure field and ultrasonic vibration field, transforms the connection property from friction constraint to geometric locking, realizing integrated anchoring of the connection node. The single groove cross-section of the micro-groove array has an inverted trapezoidal structure, and the opening width of the groove is greater than the bottom width. The angle between the acute angle tangent and the surface of the profile component is at a certain angle. to In the interval, the guiding effect of the inverted trapezoidal structure is used to drive the metal fluid to fill the deep groove when the material undergoes local plastic rheology, thereby improving the geometric interlocking strength of the non-uniform cross-section plastic rheological layer at the mating interface.

[0033] Example 2: In a test scenario used to verify the anchoring reliability of indoor keel frame nodes, for materials of... Aluminum alloy, wall thickness is The test platform, consisting of profile components and corner brackets with a grid-like groove array, was used to verify the effect of periodic pulsating pressure fields and high-frequency ultrasonic vibration fields on interface compaction. The platform employed a rolling installation machine with dual-sided counter-loading capability, and the pressure sensor had a range of 0 to... The control accuracy is 0.1%, and the displacement sensor resolution is... The sampling frequency of the electrical signal acquisition instrument is set to The decision logic for determining the pulsation frequency of symmetrical extrusion loads is based on the balance between the material filling rate and the response delay of the equipment actuator. When the rheological resistance of the profile component is in the range of 1.2 to 1.5 times that of the plastic yield stage, in order to make the crest characteristic size of the non-uniform cross-section plastic rheological layer reach the depth of the grid-like groove array... The above sets the pulse frequency to [value]. to The range, and the signal-to-noise ratio superimposed on the driving signal is Gaussian white noise was used to simulate background interference in an industrial environment. The experiment involved setting up three control systems to invert the contribution of each technical feature, establishing a baseline state for the original input. After embedding the corner code component into the profile component cavity, the initial assembly clearance was detected as... The first control group was started, which used only... Rolling is performed under constant pressure without applying a pulsating pressure field or a high-frequency ultrasonic vibration field, and the electrical signal sequence is detected to affect the original amplitude. for The measured amplitude of the damping response waveform generated by the standard pulse excitation signal for According to the formula The interface density index was calculated. The value is 0.23, and the extracted pull-out strength test result is... At this point, the material of the profile component exhibits localized bulging at the edges of the grid-like groove array, failing to achieve complete filling; the second control group is then activated, with a frequency of [missing value] superimposed while maintaining the same constant pressure. The high-frequency ultrasonic vibration field, but with pulse modulation turned off, the measured amplitude at this time for Interface density index Increased to 0.41, the pull-out strength is This indicates that the high-frequency ultrasonic vibration field reduces the material's rheological resistance.

[0034] Start the test group, and apply Simultaneous activation of high-frequency ultrasonic vibration field based on real-time axial displacement The periodic pulsating pressure field, along with the real-time axial displacement of the rolling loading mechanism... From 0 to Symmetrical extrusion load in to The amplitude fluctuates in a sinusoidal pattern, and the measured amplitude is observed at this time. for The interface density index was calculated. Reaching 0.75, the data curve, after processing with a feedback compensation mechanism, exhibits a stable trend and suppresses Gaussian white noise interference. The measured pull-out strength reaches... Compared to the control group subjected to ultrasonic vibration alone, the improvement was 75%, confirming the synergistic effect between pulsating pressure-induced plastic rheology and the reduction of deformation resistance by ultrasound. That is, the dynamic potential energy provided by the pulsating load serves as a prerequisite, enabling the material in an ultrasonically softened state to overcome the resistance within the grid-like groove array and fill the deep regions of the grooves. To determine the legal boundaries of the process parameters and demonstrate the rationality of the numerical range, an out-of-range control test was performed. When the static reference pressure of the symmetrical extrusion load was increased to... At that time, although the interface density index The value reached 0.92, but the wall thickness of the compression zone of the profile component was reduced from... Thin to The thinning rate exceeded 40%, causing the pull-out strength to decrease due to insufficient bearing capacity of the profile section. This degradation effect defines the upper limit of the engineering optimization for the pressure range; when the ultrasonic frequency decreases to At that time, the measured amplitude Descending to Interface density index The occurrence of fluctuations and the fact that the average value is lower than the preset interface filling threshold indicates that the low-frequency vibration cannot excite sufficient acoustic flow effect, confirming that the parameter range defined by the present invention is the working window for achieving physical anchoring. This experiment, through the logical mapping of the original input, intermediate feature data and judgment results, confirms the stability of the installation process in dealing with the problem of thin-walled profile connection failure.

[0035] Example 3: This example combines Figures 1 to 2 Installation process instructions for a corner bracket component specifically designed for an indoor quick-installation system, such as... Figure 1 As shown, step S1 involves embedding the corner code component with a micro-groove array into the end cavity of the profile component, thereby forming a mating interface. Step S2 involves applying a symmetrical compressive load with vector counteracting force, inducing local plastic rheology of the profile component material towards the micro-groove array. Step S3 involves controlling the compressive load amplitude based on real-time axial displacement to generate a non-uniform cross-section plastic rheological layer and a geometric locking structure. Step S4 involves applying a high-frequency ultrasonic vibration field with a frequency of 20Hz to 40Hz to reduce rheological resistance, forming an anchoring system with residual prestress. Finally, step S5 involves superimposing a standard pulse excitation signal and extracting the damping response waveform attenuation coefficient, and compensating for the pulsation amplitude in real time based on feedback characteristic parameters.

[0036] like Figure 2 As shown, the system constructs a closed-loop control architecture comprising a rolling loading mechanism, a physical mating interface, an electrical signal acquisition instrument, a control unit, and a sensor group. The rolling loading mechanism, with its built-in two sets of actuators and integrated transducers, outputs symmetrical extrusion loads (periodic pulsations) and a high-frequency ultrasonic vibration field to the physical mating interface, while simultaneously transmitting the damping response waveform to the electrical signal acquisition instrument. The physical mating interface, as the controlled object, encompasses the end cavity of the profile component, the non-uniform cross-section plastic rheological layer and geometric locking structure, as well as the micro-groove array of the corner code component. The electrical signal acquisition instrument performs damping response extraction and bandpass filter processing, outputting feedback characteristic parameters to the control unit. The sensor group uses displacement and pressure sensors to monitor the physical state of the physical mating interface and feeds back the detected real-time axial displacement and dynamic friction coefficient to the control unit. The control unit performs closed-loop feedback calculations and load compensation decisions based on the received parameters, ultimately sending a drive electrical signal sequence and a standard pulse excitation signal to the rolling loading mechanism to complete the real-time control of the entire installation process.

[0037] Example 4: For the application scenario of ceiling frame node calibration in large conference centers, addressing the risk of uneven distribution of non-uniform cross-section plastic rheological layer thickness caused by fluctuations in the wall thickness of profile components in a large-scale installation environment, the parameters of the signal injection procedure are adjusted by calibrating the control frequency. The signal injection interval is determined by the traveling speed of the rolling loading mechanism and the minimum spatial resolution of the displacement sensor. When the traveling speed of the rolling loading mechanism is... Furthermore, the spatial monitoring step size is required to be no greater than [a certain value]. At that time, the system control signal injection interval is in Within this range, and setting the pulse width of the standard pulse excitation signal to be [value missing]. To match the inductance response constant of the drive motor and ensure that the damping response waveform covers the attenuation history of the electrical signal, in step S4, the frequency is... The high-frequency ultrasonic vibration field generates periodic high-frequency impacts at the micro-contact points between the profile component and the corner code assembly through mechanical waves. The energy input intensifies the dislocation movement inside the profile component material, resulting in a physical softening effect and reducing the shear resistance when the material fills the grid-like groove array.

[0038] In step S5, the system extracts the original drive current signal and calculates the measured amplitude of the damping response waveform. Through the frequency range of to The bandpass filter removes background interference and uses the rising edge of the standard pulse excitation signal as the trigger start point with an opening length of [missing information]. The characteristic sampling window is used to detect the peak value of the voltage fluctuation curve within the sampling window to determine the maximum voltage offset value of the damped response waveform in the first oscillation cycle, and the maximum voltage offset value is determined as the measured amplitude of the damped response waveform. Measured amplitude of damped response waveform With interface density index Satisfying the formula: ,in, The density index of the interface. The measured amplitude of the damped response waveform is given in units of 1 / 2. , The original amplitude of the standard pulse excitation signal, in units of... When the interface density index When the wall thickness tolerance of the profile component causes a decrease in deviation, the control unit synchronously adjusts the reference value of the drive current of the rolling loading mechanism according to the decrease in deviation, utilizing a closed-loop feedback loop. The internal load compensation is completed, the morphological consistency of the geometric locking structure is maintained, and the correlation adjustment between the material rheological physical process and the electrical signal characteristics is used to ensure that the interface slippage of the profile component connection node does not occur under static load test with 1.5 times the design load, thereby increasing the connection reliability of the keel frame system.

[0039] Example 5: When the system faces the situation of batch replacement of dissimilar alloy profiles, before executing step S1, the control unit performs elastic limit calibration on the current batch of profile components through the offline loading unit, and measures the deformation of the profile components under unit pressure. According to deformation Determine the original amplitude of the standard pulse excitation signal. Based on the reference value, the corner bracket assembly is placed unloaded into the cavity of the profile component, and the sampling frequency is turned on without applying a compressive load. The system continuously acquires signals through the signal acquisition loop. The background electrical signal sequence is obtained and its variance is calculated. Variance value The background noise of the current installation environment is determined and used as the adjustment parameter for the adaptive center frequency of the bandpass filter in step S5, thereby eliminating the impact of random electromagnetic interference generated by high-power electrical equipment at the construction site on the measured amplitude of the damping response waveform. The impact.

[0040] In scenarios involving micro-groove matching for high-strength lightweight steel profiles, the depth of the mesh-like groove array... Original wall thickness of profile components Satisfy proportional relationship ,in For depth, For the original wall thickness, It is the depth coefficient, and The value ranges from 0.05 to 0.12. This depth coefficient is set according to the yield strength of the profile material. When the yield strength is within... to When in between, select the depth coefficient. During step S2, the system uses two sets of asymmetrically arranged rolling rollers to identify the real-time tilt vector of the corner code assembly within the profile cavity. By adjusting the radial reduction difference of each rolling head, a correction torque is generated to ensure that the thickness of the non-uniform cross-section plastic rheological layer generated at the mating interface in the trough region is not less than the original wall thickness of the profile. 70% of the non-uniform cross-section plastic rheological layer is under compressive stress under natural cooling, thus achieving physical anchoring while ensuring the integrity of the thin-walled profile interface.

[0041] Example 6: In the scenario of performing adaptive pressure calibration on 6063 aluminum alloy keel profiles, due to the deviation in work hardening characteristics between different batches of profile components, the system determines the depth coefficient of the grid-like groove array through an offline calibration procedure before executing step S1. The value of is selected based on depth. Corner code component samples with diameters of 0.05mm, 0.08mm, and 0.12mm were tested. Energy consumption changes during the material filling process were monitored using pressure sensors. When the material filling depth reached 90% of the depth of the grid-like groove array, the nonlinear abrupt change pressure of the symmetrical extrusion load was recorded. This nonlinear abrupt change pressure was determined as the mean value benchmark of the periodic pulsating pressure field in step S3, and the depth coefficient was also determined. The value is set at 0.08 to balance the material filling rate and the stability of the profile component cross-section, at an application frequency of 30. During high-frequency ultrasonic vibration, the amplitude of the mating interface is maintained at 15 by adjusting the power of the transducer. Up to 25 In the range, the acoustic flow effect is used to reduce the frictional resistance between metal interfaces.

[0042] The system uses the gain coefficient in the closed-loop feedback loop of step S5. Adjust the load compensation amount and gain coefficient. The value is based on the interface density index. With real-time axial displacement The rate of change is determined when the interface density index is determined. When the value is below the preset locking threshold of 0.65, the system calculates the deviation between the measured value and the threshold. Adjust the drive current according to the following formula: ,in, The compensated drive current, in units of ; The reference drive current is expressed in units of 1000 ppm. ; This is the gain coefficient; The density index deviation; the reverse preload applied in step S6 is determined based on the residual elastic strain in the compressed area of ​​the profile component, and the elastic rebound at the moment of unloading is monitored by a displacement sensor. The forced displacement generated by the reverse preload is set as the elastic rebound amount. 1.1 times that of the non-uniform cross-section plastic rheological layer, which maintains the pressure state at room temperature, the procedure transforms the formation process of the geometric locking structure into a control process driven by sensor characteristic quantities, ensuring that the installation nodes of different batches have consistent anchoring strength.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An installation process for corner bracket components specifically designed for indoor quick-installation systems, characterized in that, Includes the following steps: Step S1: The corner bracket assembly with a micro-groove array is embedded into the end cavity of the profile component, so that the outer surface of the corner bracket assembly and the inner surface of the profile component form a mating interface. Step S2: By applying a symmetrical extrusion load with vector counteracting on both sides of the overlapping area of ​​the profile component and the corner bracket assembly through the rolling loading mechanism, the material of the profile component is induced to produce local plastic flow in the direction of the micro-groove array. Step S3: Obtain the real-time axial displacement of the rolling loading mechanism, and control the amplitude of the symmetrical extrusion load to generate periodic pulsations based on the real-time axial displacement, so as to generate a non-uniform cross-section plastic rheological layer at the mating interface, so as to form a geometric locking structure between the profile component and the corner bracket assembly. Step S4: Apply a high-frequency ultrasonic vibration field with a frequency of 20kHz to 40kHz to the mating interface to reduce the rheological resistance of the profile component material and to form an anchoring system with residual prestress in the non-uniform cross-section plastic rheological layer inside the mating interface. Step S5: A standard pulse excitation signal is superimposed on the electrical signal sequence driving the rolling loading mechanism. The damping response waveform of the electrical signal sequence to the standard pulse excitation signal is detected. The attenuation coefficient of the damping response waveform is extracted as a feedback characteristic parameter. Based on the feedback characteristic parameter, the pulsation amplitude of the symmetrical extrusion load is compensated in real time.

2. The installation process of a corner bracket component for an indoor quick-installation system according to claim 1, characterized in that, The process of controlling the amplitude of the symmetrical extrusion load to generate periodic pulsations in step S3 includes: setting the pulsation frequency of the symmetrical extrusion load to be positively correlated with the travel speed of the rolling loading mechanism, so that the non-uniform cross-section plastic rheological layer forms an interlocking mark with equally spaced peaks and troughs on the mating interface; the peak depth of the wavy interlocking mark matches the depth of the micro-groove array, and a physical anti-reverse structure perpendicular to the axial travel direction of the profile component is constructed on the mating interface.

3. The installation process for a corner bracket component specifically designed for an indoor quick-installation system according to claim 1, characterized in that, The process of applying a high-frequency ultrasonic vibration field in step S4 includes: applying mechanical waves to the pressure surface of the profile component through a transducer integrated inside the rolling loading mechanism, thereby increasing the filling rate of the material into the micro-groove array using mechanical waves.

4. The installation process of a corner bracket component for an indoor quick-installation system according to claim 1, characterized in that, The superposition process of the standard pulse excitation signal in step S5 includes: superimposing a square wave voltage pulse with a period of 2ms on the electrical signal sequence every 50ms, extracting the attenuation coefficient of the damping response waveform, and determining the material filling density of the mating interface based on the feedback characteristic parameters.

5. The installation process for a corner bracket component specifically designed for an indoor quick-installation system according to claim 4, characterized in that, Step S5 further includes: comparing the feedback feature parameter with a preset interface filling threshold; if the feedback feature parameter exceeds the preset interface filling threshold, increasing the static reference pressure value of the symmetrical extrusion load applied in step S3 until the feedback feature parameter is within the range of the preset interface filling threshold.

6. The installation process for a corner bracket component specifically designed for an indoor quick-installation system according to claim 1, characterized in that, The path for applying symmetrical compressive load in step S2 includes: adopting a dual-sided synchronous opposing drive mode to make the compressive stress vectors acting on the opposite sides of the profile member on the same horizontal axis, thereby offsetting the plastic rheological internal stress moments generated on the opposite sides of the profile member and maintaining the neutral layer of the profile member section at the geometric center.

7. The installation process for a corner bracket component specifically designed for an indoor quick-installation system according to claim 1, characterized in that, The micro-groove array of the corner code assembly includes: a grid-like groove formed by laser cold processing on the mating surface of the corner code assembly; the edges of the grid-like groove have acute-angled cut surfaces, which are used to generate micro-shear resistance to the flowing material in step S2, thereby improving the pull-out strength of the geometric locking structure in the axial travel direction of the profile component.

8. The installation process of a corner bracket component for an indoor quick-installation system according to claim 4, characterized in that, In step S5, the interfacial density index of the mating interface is calculated based on the following formula. : ,in, The measured amplitude of the damped response waveform is given. The original amplitude of the standard pulse excitation signal; when the interface density index When the speed is below the preset locking threshold, the rolling loading mechanism is slowed down in the axial direction of the profile component.

9. The installation process of a corner bracket component for an indoor quick-installation system according to claim 1, characterized in that, Step S4 is followed by step S6, which involves applying a reverse preload to the edge of the rolling deformation zone of the profile component, so that the non-uniform cross-section plastic rheological layer is under compressive stress under natural cooling conditions, in order to counteract the alternating load generated by vibration on the profile component.

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