Disaster prevention and reduction system for metal roof steel frame building

Abstract

This invention relates to the field of metal roof steel structure building technology in general building construction, specifically a disaster prevention and mitigation system for metal roof steel structure buildings. The metal roof panels in this invention form a roof panel system for a double-sloped roof structure. The roof panel system is installed on the longitudinal beams of the steel structure via several universal wind-resistant pressure-distributing linkage components. Each universal wind-resistant pressure-distributing linkage component includes a circular box-shaped fixed base, a universal floating base, a diagonal bracing buffer device, a movable support device, and a pressure-distributing locking bolt device. The metal roof panels are fixedly connected to the universal floating base via the pressure-distributing locking bolt device. Each universal wind-resistant pressure-distributing linkage component in this invention possesses vertical floating and circumferential universal adaptive displacement capabilities, thereby enabling the metal roof panels to have vertical floating and circumferential universal adaptive displacement capabilities. This effectively ensures the overall vibration reduction performance of the building while also facilitating assembly and implementation.

Description

Technical Field

[0001] This invention relates to the field of metal roof steel structure building technology in general building construction, specifically a disaster prevention and mitigation system for metal roof steel structure buildings. Background Technology

[0002] Metal-roofed steel-frame buildings generally refer to buildings with a steel frame structure and a metal roof on top. Due to the high strength, durability, and stable performance of metal roofs, and the advantages of fast installation and high structural strength of steel frame structures, metal-roofed steel-frame buildings are increasingly widely used in large-span building structures. However, they also exhibit numerous structural defects under extreme weather conditions such as blizzards, strong winds, and freezing / thawing temperatures.

[0003] Chinese patent document CN121802946A discloses a disaster prevention structure and its operation method for a metal roof steel structure building. The disaster prevention structure of the metal roof steel structure building includes an elastic buffer component, an arched upper suspension rod, and an elastic limiting component. The elastic buffer component can initially play a role in buffering and damping vibration, and the vibration energy is transferred to the elastic limiting component through the arched upper suspension rod. The elastic buffer component and the elastic limiting component work together to improve the vibration reduction and energy dissipation efficiency. A pressure sensor is set between the disc spring in the elastic buffer component and the contact surface of the base for real-time monitoring of the deformation pressure of the disc spring. This provides data support for adjusting the spring preload of the elastic buffer component and allows for accurate adjustment of the spring preload of the elastic buffer component according to the actual working conditions. While the aforementioned solution offers good vibration reduction and energy dissipation, it involves the use of an arched upper suspension rod. The shape of this rod is quite unique, making its fabrication relatively difficult. Furthermore, its lateral vibration reduction function is primarily achieved by elastic limiting components at both ends of the arched upper suspension rod. These components include limiting shafts, columnar damping rollers, moving rings, limiting springs, and limiting locking nuts, making their structure relatively complex, especially the columnar damping rollers. Additionally, the solution does not address how to promptly clear snow from the roof. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a disaster prevention and mitigation system for metal roof steel structure buildings, which can effectively ensure the overall vibration reduction performance of the building while being easy to assemble and implement.

[0005] The technical solution adopted by this invention to solve its technical problem is: a disaster prevention and mitigation system for a metal roof steel structure building, comprising a main roof support frame and metal roof panels. The metal roof panels constitute a roof panel system for a double-sloped roof structure, and the roof panel system has two sloping roof surfaces inclined in the left and right directions. The main roof support frame includes multiple parallel steel longitudinal beams, each extending in the front-to-back direction. The upper surface of the steel longitudinal beams forms an installation slope adapted to the sloping roof surfaces. The roof panel system is installed on the steel longitudinal beams through several universal wind-resistant pressure-distributing linkage components. The universal wind-resistant pressure-distributing linkage components include a circular box-shaped fixed base, a universal floating base, a diagonal bracing buffer device, a movable support device, and a pressure-distributing locking bolt device. The circular box-shaped fixed base is fixedly connected to the universal floating base via a pressure-dividing locking bolt device. It includes a base partition and a circular box-shaped base with a top opening. The circular box-shaped base is fixedly installed on the upper surface of the steel structure longitudinal beam. The base partition is horizontally arranged inside the circular box-shaped base, dividing the interior into upper and lower parts. A support column limiting hole is provided at the center of the base partition. The universal floating base is positioned above the center of the circular box-shaped base. The movable support device includes a limiting base, a damper, a spring, a support column, a bottom limiting plate, a top limiting plate, and a pressure-dividing disc spring. The axis of the support column is perpendicular to the sloping roof. The support column is movably inserted through the supporting column limiting hole. The limiting base is fixedly installed at the top of the support column. The lower end of the damper is fixed to the limiting base. The end is fixed to the universal floating base. A spring is set on the outside of the damper, and spring one is fixed between the universal floating base and the limiting base. The bottom limiting plate is fixedly installed at the bottom of the support column. The pressure-dividing disc spring and the top limiting plate are both sleeved on the support column. The pressure-dividing disc spring is fixed between the bottom limiting plate and the top limiting plate. Universal balls are provided on the upper end face of the top limiting plate and the lower end face of the bottom limiting plate. The universal balls of the bottom limiting plate form rolling contact with the bottom of the inner cavity of the circular box-shaped base, and the universal balls of the top limiting plate form rolling contact with the lower surface of the base partition. At least three inclined brace buffer devices are provided and are spaced apart on the outer periphery of the universal floating base. Each inclined brace buffer device includes a sliding rod, a fixed block, and a sliding block one. The system comprises two sliding blocks, a first electric telescopic rod, a second spring, and a diagonal brace. The fixing block is fixed to the upper surface of the base partition and located at the edge of the support column limiting hole. The axial direction of the sliding rod is set along the radial direction of the support column. One end of the sliding rod is fixed to the fixing block, and the other end is fixed to the inner wall of the circular box-shaped base. Both sliding blocks 1 and 2 are slidably sleeved on the sliding rod. Sliding block 2 is closer to the support column limiting hole than sliding block 1. Spring 2 is sleeved on the sliding rod and fixed between sliding blocks 1 and 2. One end of the first electric telescopic rod is fixed to sliding block 1, and the other end is fixed to the inner wall of the circular box-shaped base. One end of the diagonal brace is connected to the universal floating base through a universal joint, and the other end is connected to sliding block 2 through a universal joint.

[0006] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is: a ring-shaped support platform is fixedly connected to the top opening of the circular box-shaped base; the bottom of the circular box-shaped base is connected to the longitudinal beam of the steel structure through base fixing bolts; the bottom of the inner cavity of the circular box-shaped base is provided with base fixing bolt countersunk holes that are compatible with the base fixing bolts; a pad is laid on the bottom of the inner cavity of the circular box-shaped base; and the universal ball bearings of the bottom limiting plate form rolling contact with the upper surface of the pad.

[0007] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is as follows: The main load-bearing frame of the roof includes steel structural columns, steel structural main beams, and transverse diagonal braces. The steel structural columns are arranged in two rows and symmetrically installed on the ground. Several parallel steel structural main beams are provided, with the left and right ends of each main beam fixedly installed on the tops of two symmetrical steel structural columns. Each main beam has two corresponding transverse diagonal braces, which are arranged in a V-shape on the main beam. The lower surface of the transverse diagonal braces is connected and fixed to the upper surface of the main beam through several vertically arranged beam-supported columns. The longitudinal steel beams are fixedly installed on the upper surface of the transverse diagonal braces.

[0008] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is as follows: An intelligent control unit is included. The main steel beams at both the front and rear ends, along with two corresponding transverse braces, form end-cap installation areas. End-caps are fixedly installed within these areas, and multiple bidirectional exhaust fans are mounted on the end-caps. A waterproof filling layer is provided at the eaves end of the roof panel system's lower surface relative to the main roof support frame at both the left and right ends, as well as the front and rear ends, forming installation gaps. An enclosure wall is installed below the main steel beams of the main roof support frame. The inner wall of the enclosure wall, the inner wall of the end-caps, and the lower surface of the metal roof panel form a relatively enclosed inner wind pressure monitoring chamber. An inner wind pressure sensor is installed within the inner wind pressure monitoring chamber, and an outer wind pressure sensor is installed on the outer area of ​​the roof panel system. The inner wind pressure sensor, the outer wind pressure sensor, the bidirectional exhaust fans, and the first electric telescopic rod are all electrically connected to the intelligent control unit.

[0009] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is as follows: the omnidirectional wind-resistant pressure-distributing linkage component is installed in the middle area of ​​the roof panel system in the front-to-back direction; the two ends of the roof panel system in the front-to-back direction are connected to the steel structure longitudinal beams through end support fixing components; the end support fixing components include I-beam supports, end floating bases, end fixing bolts, end disc springs, and end locking bolt devices; the metal roof panels are fixedly connected to the end floating bases through the end locking bolt devices; the I-beam supports are inclinedly installed on the upper surface of the ends of several steel structure longitudinal beams along the slope of the sloping roof, and the I-beam supports consist of an outer vertical steel plate and an inner... The structure consists of vertical steel plates and intermediate horizontal steel plates, with the intermediate horizontal steel plates connecting the outer and inner vertical steel plates. Multiple sets of end disc springs are spaced along the length of the I-beam support, with two springs in each set, positioned on the upper and lower sides of the intermediate horizontal steel plate of the I-beam support. The axial direction of the end fixing bolts is perpendicular to the sloping roof. The upper end of the end fixing bolts is fixedly connected to the end floating base, and the lower end of the end fixing bolts passes through the center of each set of two end disc springs, penetrating the fixing holes in the intermediate horizontal steel plate and the longitudinal beam of the steel structure. The lower end of the end fixing bolts is locked in place by end bolt caps.

[0010] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is as follows: the longitudinal section of the metal roof panel is wavy, and each metal roof panel includes raised peaks, recessed troughs, and interlocking seam grooves A and B located at both ends of its longitudinal direction. Both interlocking seam grooves A and B are multi-layered board structures with side openings. Interlocking seam grooves A and B interlock through their side openings, allowing adjacent metal roof panels to be interlocked and spliced ​​to form a roof panel system. The upper layer of interlocking seam groove B is located within the interlocking seam of the metal roof panel. The top layer at the splice joint; universal wind-resistant pressure-distributing linkage components are installed at the interlocking splices of adjacent metal roof panels; end sealing restraint components are installed at both the front and rear ends of the roof panel system, each end sealing restraint component including a lower vertical sealing plate and an inner transverse extension plate. The lower vertical sealing plate is attached to the outer surface of the outer vertical steel plate of the I-beam support, and the lower vertical sealing plate is fixedly connected to the outer vertical steel plate of the I-beam support by I-beam fixing bolts. The inner transverse extension plate is fixedly installed on the inner side of the top of the lower vertical sealing plate; located at one end of the front-rear direction of the roof panel system. The end edge sealing constraint component is designated as End Edge Sealing Constraint Component One, and the other end edge sealing constraint component is designated as End Edge Sealing Constraint Component Two. End Edge Sealing Constraint Component One also includes an interlocking locking groove C, which is fixedly connected to the end of the inner transverse extension plate. The interlocking locking groove C of End Edge Sealing Constraint Component One has the same structure as the interlocking locking groove B of the metal roof panel. The interlocking locking groove C forms an interlocking splice with the interlocking locking groove A of the metal roof panel located at the end. The end edge sealing constraint component is fixed to the end floating base by an end locking bolt device; the end edge sealing constraint component two also includes an interlocking locking groove D, which is fixedly connected to the end of the inner transverse extension plate. The interlocking locking groove D of the end edge sealing constraint component two has the same structure as the interlocking locking groove A of the metal roof panel. The interlocking locking groove D and the interlocking locking groove B of the metal roof panel located at the end form an interlocking splice; the interlocking splice between the interlocking locking groove D of the end edge sealing constraint component two and the interlocking locking groove B of the metal roof panel located at the end is fixed to the end floating base by an end locking bolt device.

[0011] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is: a downward-extending rain and snow shielding plate is fixedly connected to the outer side of the upper plate of the interlocking groove B; the rain and snow shielding plate is used to shield the outer end gap between the upper plate of the interlocking groove B and the upper plate of the interlocking groove A.

[0012] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is as follows: Several sets of splicing fixing holes are provided at the interlocking joints of end-edge sealing restraint component one and the metal roof panel, the interlocking joints of end-edge sealing restraint component two and the metal roof panel, and the interlocking joints of two adjacent metal roof panels. Each set of splicing fixing holes includes a main fixing hole and multiple secondary fixing holes spaced around the main fixing hole. The pressure-distributing locking bolt device includes a main bolt, a washer, and secondary bolts. The main bolt passes through the main fixing hole of the metal roof panel, and its head has a secondary fixing hole for the metal roof panel. The secondary bolts are positioned with corresponding limiting holes, and at least two secondary bolts are provided. The secondary bolts are inserted through the limiting holes and fixing holes. Both the primary and secondary bolts are positioned with their heads facing upwards. Washers are placed between the upper surface of the metal roof panel and the head of the primary bolt, and simultaneously between the upper surface of the metal roof panel and the head of the secondary bolt. Multiple internally threaded sleeves are pre-embedded and fixed on the upper surface of the universal floating base. The primary and secondary bolts are threadedly connected and fixed to the internally threaded sleeves one by one. The end floating base has the same structure as the universal floating base, and the end locking bolt device has the same structure as the pressure-dividing locking bolt device.

[0013] To facilitate timely snow removal from the roof and effectively ensure the overall structural reliability of the building, a further preferred solution is to include an intelligent control unit and a slope reciprocating snow removal mechanism, with one slope reciprocating snow removal mechanism installed for each sloping roof.

[0014] The universal wind-resistant pressure-distributing linkage component includes a pressure-distributing component slide rail device, which includes a slide rail base and a rotating base. The slide rail base is inclined along the slope of the sloping roof, and a longitudinal slide rail is provided on the upper end face of the slide rail base along its length. Multiple rotating bases are rotatably mounted on the lower end face of the slide rail base, spaced apart along its length. Each rotating base has a pin fixedly mounted at its lower end. The pin of the pressure-distributing component slide rail device is axially perpendicular to the sloping roof and is inserted into the interlocking joint of two adjacent metal roof panels. The end support fixing component includes an end component slide rail device, which has the same structure as the pressure-distributing component slide rail device. The pin of the end component slide device is inserted axially into the interlocking joint between the end sealing constraint component and the metal roof panel; the end sealing constraint component includes an outer transverse extension plate, an upper vertical sealing plate, a snow removal mechanism limiting component, and an end component slide; the outer transverse extension plate is fixedly installed on the outer side of the top of the lower vertical sealing plate, and the upper vertical sealing plate is vertically fixedly installed on the top of the lower vertical sealing plate or the upper surface of the outer transverse extension plate; the end component slide is fixedly installed on the top surface of the upper vertical sealing plate, and the extension direction of the end component slide is consistent with the longitudinal slide of the pressure dividing component slide device; the snow removal mechanism limiting component is used to limit the upper and lower stroke limit positions of the slope reciprocating snow removal mechanism.

[0015] Each reciprocating snow removal mechanism on the slope includes a snow removal mechanism frame, a hanger assembly, a counterweight assembly, and a snow removal component. The snow removal mechanism frame is mounted above the metal roof panel. Several hanger assemblies are installed between each snow removal mechanism frame and each end sealing restraint assembly. Each hanger assembly includes hangers arranged on both the inner and outer sides of the upper vertical sealing plate. The axis of the hangers is perpendicular to the sloping roof, and the upper end of the hanger is fixed to the snow removal mechanism frame. A hanger base is fixedly installed at the lower end of each hanger. A power roller is installed on the end face of the hanger base near the upper vertical sealing plate. The power roller is in contact with the upper vertical sealing plate and its rotation is controlled by a motor. The inner side of the upper vertical sealing plate is provided with longitudinal grooves for cooperating with the power rollers. Groove three, the outer side of the upper vertical sealing plate is provided with a longitudinal groove four for cooperating with the power roller; the lower end face of the snow removal mechanism frame is provided with passive roller one, passive roller two and passive roller three. Passive roller one is engaged in the end component slide groove and rolls, passive roller two is engaged in the longitudinal slide groove of the end component slide groove device and rolls, passive roller three is engaged in the longitudinal slide groove of the pressure dividing component slide groove device and rolls; the counterweight component is set in the area of ​​the concave trough of the metal roof panel, and multiple counterweight components are arranged in parallel. Each counterweight component includes a second electric telescopic rod and a counterweight block. The upper end of the second electric telescopic rod is fixed to the snow removal mechanism frame, and the counterweight block is connected to the second electric telescopic rod by a soft cable or chain. The lower end of the rod; the second electric telescopic rod enables the counterweight to have a first state of falling and supporting on the metal roof panel, and a second state of being suspended in the air without contacting the metal roof panel; the snow removal components are set in the area where the concave trough of the metal roof panel is located, and multiple snow removal components are arranged in parallel. Each snow removal component includes an outer sleeve, an inner core rod, a snow removal roller, and a snow removal buffer spring. The axis of the snow removal roller is set horizontally along the front-to-back direction. The inner core rod is respectively set at both ends of the axial direction of the snow removal roller. The snow removal roller is installed at the lower end of the inner core rod and rotated by a motor. Metal bristles are installed on the outer wall of the snow removal roller, and heating wires are installed inside the snow removal roller; the upper end of the outer sleeve is fixed on the snow removal mechanism frame, and the inner core rods are inserted into the lower part of the outer sleeve one by one. Inside the side opening, a snow-clearing buffer spring is sleeved on the upper end of the inner core rod, and the two axial ends of the snow-clearing buffer spring are respectively fixed to the spring limiting member on the outer wall of the inner core rod and the inner end wall of the outer sleeve. The snow-clearing mechanism frame is equipped with a temperature sensing unit for detecting the external temperature of the metal roof panel in the area where the snow-clearing component is located. An inclination sensor for detecting its tilt attitude is fixedly installed on the top of the snow-clearing mechanism frame. A snow thickness sensor is embedded in the outer surface of the concave trough of the metal roof panel (embedding means that the outer surface of the metal roof panel has an installation groove that matches the snow thickness sensor). The inclination sensor, snow thickness sensor, temperature sensing unit, snow-clearing component and second electric telescopic rod are all electrically connected to the intelligent control unit.

[0016] To facilitate processing and assembly, and to effectively ensure the overall structural reliability of the building, a further preferred solution is as follows: a longitudinal groove 1 is provided on the upper surface of the inner transverse extension plate, and a passive roller 4 is provided on the lower surface of the hanger base located inside the upper vertical edge sealing plate, which engages and rolls within the longitudinal groove 1; a longitudinal groove 2 is provided on the lower surface of the outer transverse extension plate, and a passive roller 5 is fixed to the lower surface of the hanger base located outside the upper vertical edge sealing plate via an L-shaped extension rod, which engages and rolls within the longitudinal groove 2.

[0017] To better monitor the building's operational status in real time, a further preferred solution is to install temperature and humidity sensors in the internal gaps of the interlocking joints of adjacent metal roof panels, embed roof displacement sensors at the upper ends of the omnidirectional floating base and the end floating base, and fix structural vibration sensors on the side walls of the steel structure longitudinal beams; the temperature and humidity sensors, roof displacement sensors, and structural vibration sensors are all electrically connected to the intelligent control unit, which is equipped with an alarm.

[0018] In practice, this invention can generally be implemented according to the following steps:

[0019] Step S1, Real-time Perception and Monitoring of the Entire Area: Through the inner wind pressure sensor, outer wind pressure sensor, snow thickness sensor, roof displacement sensor, temperature and humidity sensor, structural vibration sensor, tilt sensor, and temperature sensing unit, real-time data are collected around the clock, including the wind pressure difference between inside and outside the roof, snow thickness and distribution on the roof, structural displacement and deformation, temperature and humidity of the metal roof panel joints, vibration amplitude of the steel structure, tilting posture of the reciprocating snow removal mechanism on the slope, and external temperature of the metal roof panel. All monitoring data are then uploaded to the intelligent control unit in real time.

[0020] Step S2, Intelligent Wind Pressure Balance and Wind Resistance Control: The intelligent control unit presets a wind pressure difference threshold. When the wind pressure difference between the inside and outside of the roof exceeds the preset threshold, the intelligent control unit automatically starts the bidirectional exhaust fan on the end plate. It adaptively adjusts the exhaust speed and direction according to the wind pressure difference to quickly balance the air pressure inside and outside the roof, counteract the negative pressure of strong winds, and reduce the wind uplift load on the metal roof panel. When the wind pressure difference falls back to the safe threshold range, the bidirectional exhaust fan is automatically turned off. At the same time, it combines the structural vibration amplitude and displacement deformation data to monitor the wind-induced deformation of the roof in real time. When the deformation exceeds the safe displacement threshold, an overload warning signal is output.

[0021] Step S3, Fully Automatic Intelligent Snow Removal and Ice Melting Control: The intelligent control unit presets snow thickness thresholds and ice temperature thresholds. When the snow thickness sensor detects that the snow thickness on the roof reaches the activation threshold, or when the temperature and humidity sensor detects that the temperature of the interlocking joints of the metal roof panels is lower than the ice threshold, the intelligent control unit automatically starts the slope reciprocating snow removal mechanism; the tilt sensor calibrates the horizontal posture of the snow removal mechanism frame and the roof slope, adaptively adjusts the extension and retraction of the second electric telescopic rod of the counterweight component to match the roof tilt angle; controls the snow removal roller to rotate and sweep the snow, and automatically activates the heating wire inside the snow removal roller to perform ice melting operations in low-temperature environments;

[0022] Step S4, Adaptive reciprocating sweeping operation control: The intelligent control unit intelligently identifies local snow accumulation areas on the roof based on snow distribution data collected by the array-type snow thickness sensors, and controls the slope reciprocating snow removal mechanism to perform point-to-point and reciprocating differentiated sweeping, prioritizing the removal of snow in areas with excessive snow accumulation; during the sweeping process, the roof displacement sensor and structural vibration sensor collect data on structural displacement deformation and steel structure vibration amplitude in real time. If the detected structural displacement deformation or steel structure vibration amplitude exceeds the safety threshold, the snow removal operation is immediately suspended, and the fault is uploaded to the intelligent control unit for early warning. The alarm gives an alarm indication to avoid the risk of structural overload.

[0023] Step S5, Stop Reset and Normal Monitoring: When the snow thickness sensor detects that the snow on the entire roof has been cleared and the temperature has returned to a safe range, the intelligent control unit controls the reciprocating snow removal mechanism on the slope to reset to the initial limit position (the top position of the sloping roof), turns off the sweeping and ice melting functions, and the intelligent control unit enters the normal monitoring standby state, and executes steps S1 to S4 in a loop to achieve fully automated disaster prevention and mitigation closed-loop control of the roof's wind resistance, snow removal, leak prevention, and structural protection.

[0024] The beneficial effects of this invention are:

[0025] (1) The roof panel system is installed on the longitudinal beam of the steel structure through several universal wind-resistant pressure-distributing linkage components. Each universal wind-resistant pressure-distributing linkage component has the ability to float vertically and adapt to circumferential universal displacement, thereby enabling the metal roof panel to float vertically and adapt to circumferential universal displacement. Under strong wind load, the wind stress can be adaptively dissipated through multi-directional micro displacement, the concentrated load can be dispersed, and the risks of edge tearing, bolt loosening and roof panel falling off can be reduced. At the same time, wind-induced vibration can be buffered, and fatigue damage of steel structure can be reduced. The wind resistance performance and structural stability of the roof can be greatly improved from the structural root. The universal wind-resistant pressure-distributing linkage components are centrally designed under the metal roof panel. The main load-bearing frame of the roof can be arranged with reference to the existing traditional structure, which is convenient for processing and assembly.

[0026] (2) The wind pressure difference between the inside and outside of the house can be monitored in real time by the inner wind pressure sensor and the outer wind pressure sensor. The bidirectional exhaust fan is controlled according to the preset wind pressure difference threshold to achieve intelligent balance of wind pressure inside and outside the roof, effectively offset the wind uplift load, eliminate the wind uplift traction force generated by strong wind negative pressure, further enhance the wind resistance and protection capability of the roof, and adapt to extreme strong wind weather conditions.

[0027] (3) The slope reciprocating snow removal mechanism can realize fully automatic, differentiated and intelligent snow removal on the roof, which is conducive to eliminating the risk of snow load. The array-type snow thickness sensor can accurately identify the snow thickness and local accumulation area. The slope reciprocating snow removal mechanism with adaptive posture adjustment can complete the fixed point reciprocating sweeping. Combined with the ice melting function of the electric heating wire, it can replace the high-risk and low-efficiency manual snow removal method, which can help remove snow on the roof and ice in the gaps, and better avoid structural damage and leakage caused by snow overload and ice expansion.

[0028] (4) Full-area perception and early warning, completely solving the problem of delayed monitoring of roof leakage and icing. The present invention installs temperature and humidity sensors in the splicing gaps of the roof, which can monitor the moisture and icing status of the gaps in real time. Combined with the monitoring data obtained by the roof displacement sensor and the structural vibration sensor, it can realize early prediction and proactive prevention of hidden dangers, and improve the sealing and protection performance of the roof.

[0029] (5) A fully automated closed-loop disaster prevention and mitigation system can be constructed without human intervention, providing real-time and precise protection. The intelligent control unit integrated in this invention can autonomously complete the entire process of data monitoring, wind pressure regulation, snow removal and ice melting, fault early warning, and standby reset around the clock, realizing intelligent closed-loop management of roof wind resistance, snow removal, leak prevention, and structural protection, greatly improving the extreme weather adaptability and long-term service safety of large-span metal roof steel structure buildings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the roof main load-bearing frame of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the present invention at the eaves;

[0033] Figure 4 This is a schematic diagram of the structure of the metal roofing panel of the present invention;

[0034] Figure 5 This is a schematic diagram of the interlocking joint between two adjacent metal roof panels of the present invention.

[0035] Figure 6 This is a schematic diagram of the end support fixing component of the present invention;

[0036] Figure 7 This is a schematic diagram of the overall structure of the universal wind-resistant pressure-distributing linkage component of the present invention;

[0037] Figure 8 This is a top view of the structure of the universal wind-resistant pressure-distributing linkage component of the present invention (the annular support platform at the top of the circular box-shaped fixed base is not shown).

[0038] Figure 9 This is a schematic diagram of the pressure-dividing locking bolt device of the present invention;

[0039] Figure 10 This is a top view of the pressure-dividing locking bolt device of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of the circular box-shaped fixing base of the present invention;

[0041] Figure 12 This is a schematic diagram showing the structural connection of the universal floating base, the inclined bracing buffer device, and the movable support device of the present invention.

[0042] Figure 13 This is a schematic diagram of the pressure divider component slide device of the present invention;

[0043] Figure 14 This is a schematic diagram of the installation structure of the universal wind-resistant pressure-distributing linkage component and the metal roof panel of the present invention;

[0044] Figure 15 This is a schematic diagram of the structure of the end sealing constraint component of the present invention;

[0045] Figure 16 This is a schematic diagram of the end sealing constraint component two of the present invention;

[0046] Figure 17 This is a schematic diagram of the slope reciprocating snow removal mechanism of the present invention;

[0047] Figure 18 This is a partial structural schematic diagram of the slope reciprocating snow removal mechanism of the present invention (only the area corresponding to the end sealing constraint component is shown).

[0048] Figure 19 This is a side view schematic diagram of the snow removal component of the present invention.

[0049] The components in the diagram are labeled as follows: 1-Roof main load-bearing frame, 11-Steel structure column, 12-Steel structure main beam, 13-Beam support column, 14-Horizontal diagonal brace, 15-End sealing plate, 16-Two-way exhaust fan, 17-Steel structure longitudinal beam, 18-Waterproof filling layer at the eaves end, 2-Metal roof panel, 21-Interlocking seam groove A, 22-Interlocking seam groove B, 221-Rain and snow shielding side plate, 23-Raised crest, 24-Concave trough, 25-Fixing main hole, 26-Fixing secondary hole, 3-End support fixing assembly, 31-I-beam support, 32-End floating base, 33-End fixing bolt, 3 4-End disc spring; 35-End bolt cap; 36-End locking bolt device; 37-End component sliding groove device; 38-I-beam fixing bolt; 4-Universal wind-resistant pressure-distributing linkage component; 41-Round box-shaped fixed base; 411-Round box-shaped base; 412-Base partition; 413-Pad; 414-Base fixing bolt; 415-Support column limiting hole; 416-Annular support platform; 42-Universal floating base; 43-Diagonal brace buffer device; 431-Sliding rod; 432-Fixing block; 433-Sliding block one; 434-Sliding block two; 435-First electric telescopic rod; 436-Spring two. 437-Diagonal brace, 438-Universal hinge joint, 44-Moving support device, 441-Limiting base, 442-Damper, 443-Spring 1, 444-Support column, 445-Bottom limiting plate, 446-Top limiting plate, 447-Pressure-dividing disc spring, 448-Universal ball bearing, 45-Pressure-dividing locking bolt device, 451-Main bolt, 4511-Secondary bolt limiting hole, 452-Washer ring, 453-Secondary bolt, 46-Pressure-dividing component slide groove device, 461-Slide groove base, 462-Rotating base, 463-Pin rod, 5-End sealing constraint component 1, 51-Lower vertical 52-Inner transverse extension plate, 521-Longitudinal groove one, 53-Outer transverse extension plate, 531-Longitudinal groove two, 54-Upper vertical edge sealing plate, 541-Longitudinal groove three, 542-Longitudinal groove four, 55-Snow removal mechanism limiting component, 56-End component slide groove, 57-Interlocking edge groove C, 58-Interlocking edge groove D, 6-End edge sealing constraint component two, 7-Slope reciprocating snow removal mechanism, 71-Snow removal mechanism frame, 711-Passive roller one, 712-Passive roller two, 713-Passive roller three, 72-Hanging rod, 73-Hanging rod base, 731-Power roller, 732-L Type extension rod, 733-passive roller four, 734-passive roller five, 74-counterweight assembly, 75-snow removal assembly, 751-outer sleeve, 752-inner core rod, 753-snow removal roller, 754-snow removal buffer spring. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0051] like Figures 1 to 19 As shown, the disaster prevention and mitigation system for a metal roof steel structure building according to the present invention includes a main roof support frame 1 and metal roof panels 2. The metal roof panels 2 constitute a roof panel system for a double-sloped roof structure, and the roof panel system has two sloping roof surfaces that are inclined in the left-right direction. A double-sloped roof structure refers to a roof structure with two sloping roof surfaces that slope from the ridge to both sides. The ridge is the part where the tops of the two sloping roof surfaces connect. The sloping roof surfaces are inclined in the left-right direction, while the ridge extends in the front-back direction. It is understood that the above orientation is only a reference state to facilitate understanding of the overall structure described in the present invention.

[0052] The main roof support frame 1 can be implemented with reference to existing technology, which includes at least a plurality of parallel steel longitudinal beams 17, each steel longitudinal beam 17 extending along the front-to-back direction, and the upper surface of the steel longitudinal beam 17 forming an installation slope adapted to the sloping roof. The key technical point of the present invention is that the roof panel system is installed on the steel longitudinal beams 17 through a plurality of universal wind-resistant pressure-distributing linkage components 4. The universal wind-resistant pressure-distributing linkage components 4 include a circular box-shaped fixed base 41, a universal floating base 42, a diagonal bracing buffer device 43, a movable buffer device 44, and a pressure-distributing locking bolt device 45. The metal roof panel 2 is fixedly connected to the universal floating base 42 through the pressure-distributing locking bolt device 45. The circular box-shaped fixed base 41 includes a base partition 412 and a circular box-shaped base 411 with a top opening. The top opening of the circular box-shaped base 411 is adapted to the range of motion of the diagonal bracing rod 437, and can generally be accessed through the circular box-shaped base 411. A ring-shaped support platform 416 is formed at the top of the base 411, which is equivalent to the ring-shaped support platform 416 being fixedly connected to the top opening of the circular box-shaped base 411; the circular box-shaped base 411 is fixedly installed on the upper surface of the steel structure longitudinal beam 17; the base partition 412 is arranged laterally inside the circular box-shaped base 411 and divides the interior of the circular box-shaped base 411 into upper and lower parts; a support column limiting hole 415 is provided at the center of the base partition 412; the universal floating base 42 is arranged above the center of the circular box-shaped base 411; the movable support device 44 includes a limiting base 441, a damper 442, a spring 443, a support column 444, and a bottom limiting plate 445. The top limiting plate 446 and the pressure-dividing disc spring 447 are installed. The axis of the support column 444 is perpendicular to the sloping roof. The support column 444 is movably installed through the support column limiting hole 415. The limiting base 441 is fixedly installed on the top of the support column 444. The lower end of the damper 442 is fixed on the limiting base 441, and the upper end of the damper 442 is fixed to the universal floating base 42. The first spring 443 is sleeved on the outside of the damper 442 and fixed between the universal floating base 42 and the limiting base 441. The bottom limiting plate 445 is fixedly installed on the bottom of the support column 444. The pressure-dividing disc spring 447 and the top limiting plate 446 are both... A pressure-dividing disc spring 447 is fixedly installed between the bottom limiting plate 445 and the top limiting plate 446, and is sleeved on the support column 444. Universal ball bearings 448 are provided on the upper end surface of the top limiting plate 446 and the lower end surface of the bottom limiting plate 445. The universal ball bearings 448 of the bottom limiting plate 445 form rolling contact with the bottom of the inner cavity of the round box-shaped base 411, and the universal ball bearings 448 of the top limiting plate 446 form rolling contact with the lower surface of the base partition plate 412. At least three inclined bracing buffer devices 43 are provided and are spaced apart on the outer periphery of the universal floating base 42. The inclined bracing buffer devices 43 are preferably arranged at uniform intervals.Each diagonal brace buffer device 43 includes a sliding rod 431, a fixing block 432, a first sliding block 433, a second sliding block 434, a first electric telescopic rod 435, a second spring 436, and a diagonal brace 437. The fixing block 432 is fixed to the upper surface of the base partition plate 412 and located at the edge of the support column limiting hole 415. The axial direction of the sliding rod 431 is arranged along the radial direction of the support column 444. One end of the sliding rod 431 is fixed to the fixing block 432, and the other end is fixed to the inner wall of the circular box-shaped base 411. The first sliding block 433 and the second sliding block 434 are slidably sleeved. On the sliding rod 431, the second sliding block 434 is closer to the support column limiting hole 415 than the first sliding block 433. The second spring 436 is sleeved on the sliding rod 431 and fixed between the first sliding block 433 and the second sliding block 434. One axial end of the first electric telescopic rod 435 is fixed to the first sliding block 433, and the other end is fixed to the inner wall of the circular box-shaped base 411. One axial end of the diagonal brace 437 is connected to the universal floating base 42 through the universal joint 438, and the other end is connected to the second sliding block 434 through the universal joint 438. The damper 442 can be a hydraulic damper or a rubber damper. The hydraulic damper is suitable for coastal strong typhoon high wind pressure conditions and has a strong buffering and energy absorption effect; the rubber damper is suitable for inland conventional strong wind scenarios, with low cost and no maintenance. The aforementioned omnidirectional wind-resistant pressure-distributing linkage component 4 is the core wind-resistant buffer component in this invention. At the connection node where the omnidirectional wind-resistant pressure-distributing linkage component 4 is located, the metal roof panel 2 can achieve vertical floating and circumferential omnidirectional movement by relying on the synergistic action of the omnidirectional floating base 42, the diagonal bracing buffer device 43, and the movable buffer device 44, forming a wind-resistant pressure-distributing linkage effect. The combined structure of the damper 442 and spring 443 can absorb the vertical wind and snow impact, and the diagonal bracing rod 437 can synchronously transmit the buffer displacement, further utilizing the second spring 436 to play a buffering role. The combined structure of the bottom limiting plate 445, the top limiting plate 446, the pressure-distributing disc spring 447, and the omnidirectional ball bearing 448 can conveniently realize omnidirectional movement around the support column 444. The first electric telescopic rod 435 can generally be equipped with an independently set hydraulic motor, which drives the first electric telescopic rod 435 to extend and retract along its own axis. The first electric telescopic rod 435 extends, pushing the sliding block 433 towards the center of the circular box-shaped base 411, compressing the second spring 436, shortening the movable distance of the second sliding block 434, and thus reducing the overall range of motion of the omnidirectional floating base 42; the first electric telescopic rod 435 retracts, the position of the first sliding block 433 moves back, the range of motion of the second sliding block 434 expands, and the floating amplitude of the omnidirectional floating base 42 increases synchronously. In specific implementation, external environmental data and the first electric telescopic rod 435 are generally used for linkage control. For example, in the preferred embodiment described later, linkage control can be performed based on the wind pressure difference between the inside and outside of the building measured by the inner and outer wind pressure sensors to adapt to different wind force levels and buffering requirements.

[0053] In some preferred embodiments, an annular support platform 416 is fixed to the top opening of the circular box-shaped base 411. The annular support platform 416 can be used to limit the maximum sinking stroke of the metal roof panel 2 and better play a temporary support role. That is, during the sinking process, the metal roof panel 2 is ultimately supported and constrained by the annular support platform 416.

[0054] The universal ball bearings 448 of the bottom limiting plate 445 form rolling contact with the bottom of the inner cavity of the round box-shaped base 411. This can be broadly interpreted as the universal ball bearings 448 of the bottom limiting plate 445 directly forming rolling contact with the bottom of the inner cavity of the round box-shaped base 411. Alternatively, a pad 413 can be added to the bottom of the inner cavity of the round box-shaped base 411, with the upper surface of the pad 413 serving as the contact surface for the universal ball bearings 448 of the bottom limiting plate 445. For example, in some preferred embodiments, to facilitate the connection and fixation of the bottom of the round box-shaped base 411 to the steel structure longitudinal beam 17, the bottom of the round box-shaped base 411 is connected to the steel structure longitudinal beam 17 via base fixing bolts 414. The bottom of the inner cavity of the round box-shaped base 411 is provided with countersunk holes for the base fixing bolts 414 that are compatible with the base fixing bolts. Due to the presence of countersunk holes in the base fixing bolts, in order to obtain a relatively complete travel plane to facilitate the rolling of the universal ball bearings 448 of the bottom limiting plate 445, a pad 413 is laid at the bottom of the inner cavity of the round box-shaped base 411, and the universal ball bearings 448 of the bottom limiting plate 445 form rolling contact with the upper surface of the pad 413.

[0055] In a preferred embodiment, the main roof support frame 1 includes steel structural columns 11, steel structural main beams 12, and transverse diagonal braces 14. The steel structural columns 11 are arranged in two rows and symmetrically installed on the ground. Several parallel steel structural main beams 12 are arranged, with the left and right ends of each steel structural main beam 12 fixedly installed at the top of the two symmetrical steel structural columns 11. That is, the axis of the steel structural main beams 12 extends along the left and right direction, and the multiple steel structural main beams 12 are spaced apart along the front and back direction. Each row of steel structural columns 11 is also spaced apart along the front and back direction. Each steel structural main beam 12 is provided with two transverse diagonal braces 14, and the two transverse diagonal braces 14 are erected in a herringbone shape on the steel structural main beam 12. The lower surface of the transverse diagonal braces 14 and the upper surface of the steel structural main beam 12 are connected and fixed by several vertically arranged beam support columns 13. The steel structural longitudinal beams 17 are fixedly installed on the upper surface of the transverse diagonal braces 14. The two transverse diagonal braces 14 are arranged in a herringbone shape, meaning that both transverse diagonal braces 14 are inclined, and their higher ends face each other. The upper surface of the transverse diagonal braces 14 serves as the fixed support surface for the steel structure longitudinal beam 17, and correspondingly, the inclination angle of the two transverse diagonal braces 14 is also adapted to the sloping roof. In this preferred embodiment, the aforementioned main steel structure beam 12 and transverse diagonal braces 14 together constitute a triangular stable sloping roof frame, while the support columns 13 on the beams serve to strengthen and fix the structure, thereby improving the overall rigidity of the main roof load-bearing frame 1.

[0056] In a further preferred embodiment, the main steel beams 12 at the front and rear ends, together with the corresponding two transverse diagonal braces 14, form an end cap installation area. An end cap 15 is fixedly installed in the end cap installation area, and multiple bidirectional exhaust fans 16 are provided on the end cap 15. The bidirectional exhaust fans 16 are existing complete sets of equipment, and are usually equipped with frequency converters to adjust the speed of the bidirectional exhaust fans 16 during operation. The lower surface of the roof panel system is provided with an eaves end waterproof filling layer 18 at the left and right ends and the front and rear ends of the installation gaps formed relative to the main roof support frame 1, which is equivalent to the integral roof formed by splicing the metal roof panels 2. A waterproof filling layer 18 is installed in the gaps and cavities below the eaves on both sides and the front and rear ends. Generally, the waterproof filling layer 18 is not required in the intact slab area in the middle of the roof. The waterproof filling layer 18 can be cast and filled on-site using a high-elasticity sealing material. Optional materials include polyurethane sealing foam, butyl rubber sealing strips, and modified polysulfide sealant. After curing, it completely seals the through gaps under the slab, preventing rainwater and snowmelt from penetrating inward and strengthening the waterproof sealing ability of the roof edges. On the other hand, it prevents airflow from flowing between the inside and outside of the roof along the gaps, helping to reduce the negative pressure at the ends and providing auxiliary windproofing.

[0057] In a preferred embodiment, the main roof support frame 1 has an enclosure wall in the area below the main steel beam 12. The inner wall of the enclosure wall, the inner wall of the end sealing plate 15, and the lower surface of the metal roof panel 2 form a relatively closed inner wind pressure monitoring chamber (relatively closed means that a small amount of air can be allowed to infiltrate without affecting the air pressure regulation effect). An inner wind pressure sensor is installed in the inner wind pressure monitoring chamber, and an outer wind pressure sensor is installed in the outer area of ​​the roof panel system. The invention also includes an intelligent control unit. The inner wind pressure sensor, the outer wind pressure sensor, the bidirectional exhaust fan 16, and the first electric telescopic rod 435 are all electrically connected to the intelligent control unit. The inner and outer wind pressure sensors can be flexibly arranged according to the overall structural characteristics of the building, and the design should be based on the principle of facilitating comprehensive and accurate data collection. In the preferred embodiment described later, the preferred arrangement is as follows: the outer wind pressure sensors are uniformly fixed on the outer surface of the raised crest 23 of the metal roof panel 2, the outer surface of the end sealing constraint component 1 5 and the outer surface of the end sealing constraint component 2 6, and densely arranged on the windward slope, leeward slope, roof side slope and gable end, directly contacting the outdoor airflow, accurately collecting the real-time outdoor wind pressure, and realizing full-area wind pressure monitoring; the inner wind pressure sensors are uniformly installed on the lower side of the main horizontal beam 12 of the steel structure, the lower surface of the longitudinal beam 17 of the steel structure, and the inner surface of the end sealing plate 15 inside the inner wind pressure monitoring cavity; the inner wind pressure monitoring cavity relies solely on the bidirectional exhaust fan 16 to complete the exchange of internal and external airflow, isolating the interference of outdoor turbulence, ensuring that the internal air pressure data is stable and reliable, and using this and the outer wind pressure value to calculate the real difference between the internal and external wind pressure of the roof. The detection data from the inner and outer wind pressure sensors can provide data for the adjustment of the bidirectional exhaust fan 16 and the first electric telescopic rod 435.

[0058] In specific implementation, the preferred control method for wind pressure balance and wind resistance is as follows: The intelligent control unit collects the arithmetic mean of all external wind pressure sensor values ​​in real time as the reference value for external wind pressure on the roof, and collects the arithmetic mean of all internal wind pressure sensor values ​​as the reference value for internal wind pressure on the roof. The real-time wind pressure difference between the external and internal wind pressure reference values ​​is calculated by subtracting the internal wind pressure reference value from the external wind pressure reference value. The intelligent control unit presets multiple wind pressure thresholds. When the monitored wind pressure difference between the internal and external wind pressure on the roof exceeds the corresponding threshold, the intelligent control unit performs operations in two stages: The first stage automatically activates the end sealing plate. The bidirectional exhaust fan 16 on the upper part of the 15th floor adaptively adjusts its speed and switches the ventilation direction to balance the air pressure according to the pressure difference; the second-stage synchronous drive inclined brace buffer device 43 is equipped with a hydraulic motor to adjust the extension length of the first electric telescopic rod 435. The greater the wind pressure, the greater the extension of the first electric telescopic rod 435, which reduces the range of motion of the sliding block 434 and limits the vertical and circumferential movement of the universal floating base 42, thus suppressing excessive offset and tearing of the metal roof panel 2 under strong winds; after the wind pressure drops to a safe range, the intelligent control unit controls the first electric telescopic rod 435 to retract and restore the large buffer stroke.

[0059] In a preferred embodiment, the omnidirectional wind-resistant pressure-distributing linkage component 4 is located in the middle region of the roof panel system in the front-to-back direction. The two ends of the roof panel system in the front-to-back direction are connected to the steel structure longitudinal beams 17 through end support fixing components 3. The end support fixing components 3 include I-beam support members 31, end floating bases 32, end fixing bolts 33, end disc springs 34, and end locking bolt devices 36. The metal roof panel 2 is fixedly connected to the end floating bases 32 through the end locking bolt devices 36. The I-beam support members 31 are inclined along the slope of the sloping roof and are installed on the upper surface of the ends of several steel structure longitudinal beams 17. The I-beam support members 31 are composed of outer vertical steel plates, inner vertical steel plates, and middle transverse steel plates. The intermediate transverse steel plate connects the outer and inner vertical steel plates; multiple sets of end disc springs 34 are spaced along the length of the I-beam support 31, with two end disc springs 34 in each set, placed on the upper and lower sides of the intermediate transverse steel plate of the I-beam support 31 respectively; the axial direction of the end fixing bolts 33 is perpendicular to the sloping roof, the upper end of the end fixing bolts 33 is fixedly connected to the end floating base 32, and the lower end of the end fixing bolts 33 is inserted through the center of each set of two end disc springs 34, and passes through the support fixing holes provided in the intermediate transverse steel plate of the I-beam support 31 and the longitudinal beam 17 of the steel structure, and the lower end of the end fixing bolts 33 is locked and fixed by the end bolt caps 35. The outer vertical steel plate of the I-beam support 31 refers to the vertical steel plate located on the side of the I-beam support 31 away from the center of the sloping roof, and the inner vertical steel plate of the I-beam support 31 refers to the vertical steel plate located on the side of the I-beam support 31 closer to the center of the sloping roof. The end support fixing component 3 can strengthen the support at the ends of the roof panel system, improve the load-bearing capacity of the structure at both ends, and reduce the risk of warping of the metal roof panel 2 under stress.

[0060] like Figures 3 to 5As shown, in a preferred embodiment, the longitudinal section of the metal roof panel 2 is wavy. The metal roof panel 2 is preferably made of continuously galvanized aluminum-zinc rolled sheet. Each metal roof panel 2 includes raised peaks 23, recessed troughs 24, and interlocking locking grooves A21 and B22 located at its longitudinal ends. Both interlocking locking grooves A21 and B22 are multi-layered board structures with side openings (i.e., side openings are formed between adjacent upper and lower panels). The interlocking locking grooves A21 and B22 interlock through their side openings, allowing adjacent metal roof panels 2 to be interlocked and spliced ​​to form a roof panel system. The upper layer of the interlocking locking groove B22 is located on the metal roof panel. The uppermost layer of the interlocking joint of the roof panel 2; universal wind-resistant pressure-distributing linkage components 4 are installed at the interlocking joints of adjacent metal roof panels 2; end sealing restraint components are respectively installed at the front and rear ends of the roof panel system, each end sealing restraint component including a lower vertical sealing plate 51 and an inner transverse extension plate 52. The lower vertical sealing plate 51 is attached to the outer surface of the outer vertical steel plate of the I-beam support 31, and the lower vertical sealing plate 51 and the outer vertical steel plate of the I-beam support 31 are fixedly connected by I-beam fixing bolts 38. The inner transverse extension plate 52 is fixedly installed on the inner side of the top of the lower vertical sealing plate 51; located at one end of the front-rear direction of the roof panel system. The end edge sealing constraint assembly is end edge sealing constraint assembly one 5, and the other end edge sealing constraint assembly is end edge sealing constraint assembly two 6. End edge sealing constraint assembly one 5 also includes an interlocking locking groove C57, which is fixedly connected to the end of the inner transverse extension plate 52. The interlocking locking groove C57 of end edge sealing constraint assembly one 5 has the same structure as the interlocking locking groove B22 of the metal roof panel 2. The interlocking locking groove C57 and the interlocking locking groove A21 of the metal roof panel 2 at the end form an interlocking splice. The interlocking splice between the interlocking locking groove C57 of end edge sealing constraint assembly one 5 and the interlocking locking groove A21 of the metal roof panel 2 at the end is connected by an end... The locking bolt device 36 is fixed to the end floating base 32; the end sealing edge restraint component 2 6 also includes an interlocking locking groove D58, which is fixedly connected to the end of the inner transverse extension plate 52. The interlocking locking groove D58 of the end sealing edge restraint component 2 6 has the same structure as the interlocking locking groove A21 of the metal roof panel 2. The interlocking locking groove D58 and the interlocking locking groove B22 of the metal roof panel 2 located at the end form an interlocking splice; the interlocking splice between the interlocking locking groove D58 of the end sealing edge restraint component 2 6 and the interlocking locking groove B22 of the metal roof panel 2 located at the end is fixed to the end floating base 32 by the end locking bolt device 36.In the preferred embodiment described above, both ends of the metal roof panel 2 are provided with interlocking locking grooves. Adjacent metal roof panels are interlocked and spliced ​​together by interlocking locking, forming a continuous and complete roof panel system. The metal roof panel 2, as the main body of the outer cladding of the roof, achieves overall sealing and shielding through interlocking splicing, preventing rain, snow, and strong winds from directly eroding the internal steel structure of the roof. The corrugated cross section of the metal roof panel 2 can improve the bending resistance of the panel. The end sealing restraint component 5 and the end sealing restraint component 6 are used to seal the gaps at the front and rear ends of the roof panel system, preventing strong winds and snow from entering the internal structure from the front and rear ends of the roof. At the same time, they provide a sliding installation foundation for the slope reciprocating snow removal mechanism 7 in the preferred embodiment described later.

[0061] In a preferred embodiment, a downwardly extending rain and snow shielding plate 221 is fixedly connected to the outer side of the upper plate of the interlocking groove B22; the rain and snow shielding plate 221 is used to shield the outer end gap between the upper plate of the interlocking groove B22 and the upper plate of the interlocking groove A21, thereby achieving a better rain and snow shielding effect. The interlocking groove B22 and the rain and snow shielding plate 221 are integrally formed with respect to the main structure of the metal roof panel 2. The rain and snow shielding plate 221 can adopt a sloping plate structure or an arc plate structure.

[0062] In a preferred embodiment, several sets of splicing fixing holes are provided at the interlocking joints of the end edge sealing constraint component 1 5 and the metal roof panel 2, the interlocking joints of the end edge sealing constraint component 2 6 and the metal roof panel 2, and the interlocking joints of two adjacent metal roof panels 2. Each set of splicing fixing holes includes a fixing main hole 25 and multiple fixing secondary holes 26 arranged at intervals around the fixing main hole 25. The fixing secondary holes 26 are generally arranged at least four evenly spaced. The number of fixing secondary holes 26 in each set of splicing fixing holes shall not be less than the sum of the number of secondary bolts 453 and pins 463 at the corresponding single node. For example, in the embodiment shown in the figure, there are six fixing secondary holes 26 in each set of splicing fixing holes, and the sum of the number of secondary bolts 453 and pins 463 at the corresponding single node is four (including two secondary bolts 453 and two pins 463). The pressure-dividing locking bolt device 45 includes a main bolt 451, a washer 452 and a secondary bolt 453. The main bolt 451 is installed through the fixing main hole 25 of the metal roof panel 2. The head end of the main bolt 451 is provided with a secondary bolt limiting hole 4511 corresponding to the position of the fixing slave hole 26 of the metal roof panel 2. At least two secondary bolts 453 are provided, and the secondary bolts 453 are installed through the secondary bolt limiting hole 4511 and the fixing slave hole 26. The heads of both the main bolt 451 and the secondary bolt 453 are facing upwards. The washer 452 is located between the upper surface of the metal roof panel 2 and the head end of the main bolt 451, and is also located between the upper surface of the metal roof panel 2 and the head end of the secondary bolt 453. Multiple internal threaded sleeves are pre-embedded and fixed on the upper end face of the universal floating base 42. The main bolt 451 and the secondary bolt 453 are threadedly connected and fixed to the internal threaded sleeves one by one. The end floating base 32 has the same structure as the universal floating base 42, and the end locking bolt device 36 has the same structure as the pressure dividing locking bolt device 45. The splicing fixing holes are arranged in a distributed manner, which can help to distribute the load.

[0063] In a preferred embodiment, the present invention includes an intelligent control unit and a slope reciprocating snow removal mechanism 7, with one slope reciprocating snow removal mechanism 7 provided for each sloping roof.

[0064] The universal wind-resistant pressure-distributing linkage component 4 includes a pressure-distributing component slide device 46. The slide device 46 includes a slide base 461 and a rotating base 462. The slide base 461 is inclined along the slope of the sloping roof. A longitudinal slide groove is provided on the upper surface of the slide base 461 along its length. The rotating base 462 is rotatably mounted on the lower surface of the slide base 461. Multiple rotating bases 462 are spaced apart along the length of the slide base 461. Each rotating base 462... A pin 463 is fixedly installed at the lower end. The pin 463 of the pressure-dividing component slide device 46 is axially perpendicular to the sloping roof and is inserted into the interlocking joint of two adjacent metal roof panels 2 along its axial direction. In a preferred embodiment, the pin 463 is inserted into the secondary bolt limiting hole 4511 of the pressure-dividing locking bolt device 45 and the fixing hole 26 of the interlocking joint of two adjacent metal roof panels 2. The end support fixing component 3 includes an end component slide device 37, and the end component slide device 37 and the pressure-dividing component slide device 46 are connected. With identical structures, the pin 463 of the end component slide device 37 is inserted axially into the engagement joint between the end sealing constraint component and the metal roof panel 2. In a preferred embodiment, the pin 463 is inserted into the secondary bolt limiting hole 4511 of the end locking bolt device 36 and the fixing hole 26 at the engagement joint between the end sealing constraint component and the metal roof panel 2. The end sealing constraint components all include an outer transverse extension plate 53, an upper vertical sealing plate 54, a snow removal mechanism limiting member 55, and an end component slide 56. A side transverse extension plate 53 is fixedly installed on the outer side of the top of the lower vertical edge sealing plate 51, and an upper vertical edge sealing plate 54 is vertically fixedly installed on the top of the lower vertical edge sealing plate 51 or on the upper surface of the outer transverse extension plate 53. An end component slide groove 56 is fixedly installed on the top surface of the upper vertical edge sealing plate 54, and the extension direction of the end component slide groove 56 is consistent with the longitudinal slide groove of the pressure dividing component slide groove device 46. A snow removal mechanism limiting member 55 is used to limit the upper and lower stroke limit positions of the slope reciprocating snow removal mechanism 7. The snow removal mechanism limiting member 55 can be set at the corresponding positions of the longitudinal slide groove of the slide groove base 461, the end component slide groove 56, and other guide mechanisms. In some preferred embodiments, the snow removal mechanism limiting member 55 is an L-shaped structure and is fixedly attached to the top surface and one side surface of the upper vertical edge sealing plate 54 by bolts, thereby limiting the end of the end component slide groove 56 and the longitudinal groove four 542 (or longitudinal groove three 541). In some preferred embodiments, the snow removal mechanism limiting component 55 is a gate-shaped structure, and is fixedly attached to the top surface and both side surfaces of the upper vertical sealing plate 54 by bolts, thereby limiting the end positions of the end component slide groove 56, longitudinal groove four 542, and longitudinal groove three 541. The above embodiments directly utilize the universal wind-resistant pressure-distributing linkage component 4, the end support fixing component 3, and the end sealing constraint component to arrange the guide mechanism of the slope reciprocating snow removal mechanism 7, which simplifies the overall structure of the device.

[0065] Each reciprocating snow removal mechanism 7 on a slope includes a snow removal mechanism frame 71, a rod assembly, a counterweight assembly 74, and a snow removal assembly 75. The snow removal mechanism frame 71 is installed above the metal roof panel 2. Several rod assemblies are provided between each snow removal mechanism frame 71 and each end sealing edge restraint assembly. Each rod assembly includes rods 72 arranged on the inner and outer sides of the upper vertical sealing plate 54. The axis of the rods 72 is perpendicular to the sloping roof. The upper end of the rods 72 is fixed to the snow removal mechanism frame 71. The preferred fixing connection method is that the upper end of the rods 72 is provided with an external thread structure, and the rods 72 are respectively provided with fixing nuts on the upper and lower sides of the fixing parts of the snow removal mechanism frame 71. The lower end of each rod 72 is fixedly provided with a rod base 73, which is close to the upper vertical sealing plate. A power roller 731 is provided on the end face of 54. The power roller 731 is in contact with the upper vertical sealing plate 54 and is rotated by a motor. The inner side of the upper vertical sealing plate 54 is provided with a longitudinal groove 3 541 for cooperating with the power roller 731, and the outer side of the upper vertical sealing plate 54 is provided with a longitudinal groove 4 542 for cooperating with the power roller 731. The lower end face of the snow removal mechanism frame 71 is provided with a passive roller 1 711, a passive roller 2 712 and a passive roller 3 713. The passive roller 1 711 is engaged in the end component slide groove 56 and rolls. The passive roller 2 712 is engaged in the longitudinal slide groove of the end component slide groove device 37 and rolls. The passive roller 3 713 is engaged in the longitudinal slide groove of the pressure dividing component slide groove device 46 and rolls.

[0066] Counterweight components 74 are located in the area of ​​the recessed trough 24 of the metal roof panel 2. Multiple counterweight components 74 are arranged in parallel. Each counterweight component 74 includes a second electric telescopic rod and a counterweight block. The upper end of the second electric telescopic rod is fixed to the snow removal mechanism frame 71, and the counterweight block is connected to the lower end of the second electric telescopic rod by a soft cable or chain. The second electric telescopic rod enables the counterweight block to have a first state of falling and supporting itself on the metal roof panel 2, and a second state of being suspended in the air without contacting the metal roof panel 2. Snow removal components 75 are located in the area of ​​the recessed trough 24 of the metal roof panel 2. Multiple snow removal components 75 are arranged in parallel. Each snow removal component 75 includes an outer sleeve 751, an inner core rod 752, and a snow removal roller 753. The snow removal roller 753 is horizontally arranged along the front-to-back direction, and inner core rods 752 are respectively arranged at both ends of the axial direction of the snow removal roller 753. The snow removal roller 753 is installed at the lower end of the inner core rods 752 and rotated by a motor. Metal bristles are installed on the outer wall of the snow removal roller 753, and heating wires are installed inside the snow removal roller 753. The upper end of the outer sleeve 751 is fixed on the snow removal mechanism frame 71. The inner core rods 752 are inserted into the lower opening end of the outer sleeve 751 one by one. The snow removal buffer spring 754 is sleeved on the upper end of the inner core rod 752, and the two ends of the snow removal buffer spring 754 are respectively fixed to the spring limiting member on the outer wall of the inner core rod 752 and the inner end wall of the outer sleeve 751. The snow removal roller 753 is generally a long cylindrical structure. Each snow removal roller 753 is arranged only for a single concave trough 24 of the metal roof panel 2 to avoid interference from the convex peaks 23 on the rotation and cleaning of the snow removal roller 753. At both ends of the axial direction of the snow removal roller 753, there is a set of elastic support components consisting of an inner core rod 752, an outer sleeve 751 and a snow removal buffer spring 754. The snow removal roller 753 can rotate smoothly along the concave trough 24 by relying on the double support structure at both ends.

[0067] The snow removal mechanism frame 71 has a temperature sensing unit installed in the area where the snow removal component 75 is located. This unit is typically positioned on the side of the snow removal roller 753. The detected temperature value serves as the basis for activating the preheating and de-icing function, determining whether the heating wire should be activated. A tilt sensor is fixedly installed on the top of the snow removal mechanism frame 71 to detect its tilt posture. A snow thickness sensor is embedded on the outer surface of the concave trough 24 of the metal roof panel 2. The tilt sensor, snow thickness sensor, temperature sensing unit, snow removal component 75, and second electric telescopic rod are all electrically connected to the intelligent control unit. The snow thickness sensor collects real-time snow distribution data at various locations on the metal roof panel 2, providing data support for the activation of the snow removal component 75. The electrical connection between the snow removal component 75 and the intelligent control unit means that its built-in electrical devices (motor, heating wire, etc.) are electrically connected to the intelligent control unit. The second electric telescopic rod is typically equipped with an independently installed hydraulic motor, which drives the second electric telescopic rod to extend and retract along its own axial direction. The second electric telescopic rod is generally set along a direction perpendicular to the sloping roof. By using the second electric telescopic rod to move the counterweight, the load distribution of the snow removal mechanism frame 71 can be adjusted, thereby adjusting the posture of the snow removal mechanism frame 71. An inclination sensor is installed on the slope reciprocating snow removal mechanism 7 to detect its tilt posture in real time. The detection data of the inclination sensor is used to calibrate the snow removal walking posture and the adaptability to the roof slope. That is, the inclination sensor and the second electric telescopic rod are linked for control.

[0068] Although the slope of the designed slope is fixed after the metal roof panel 2 is laid, there are processing and installation deviations in the assembly of components such as the hanger 72 and the longitudinal slide. Strong wind vibration, long-term settlement, and local snow load will all change the real-time tilt posture of the snow removal mechanism frame 71. Therefore, it is preferable to set up an inclination sensor as an essential monitoring component. The inclination sensor collects the tilt angle of the snow removal mechanism frame 71 in real time and transmits it to the intelligent control unit. On the one hand, it is used for the slope benchmark calibration of the equipment when it starts up. On the other hand, it calculates the downward tilting auxiliary torque generated by the counterweight in combination with the tilt angle and dynamically adjusts the extension length of the second electric telescopic rod. When the roof is subjected to continuous vibration by gusts of wind and the tilt angle of the snow removal mechanism frame 71 experiences instantaneous shaking, the intelligent control unit performs sliding average noise reduction processing on the tilt angle sampling data, filters out instantaneous shaking noise, and outputs stable tilt parameters to achieve dynamic fitting and matching between the snow removal roller 753 and the concave trough 24 of the metal roof panel 2 under vibration conditions.

[0069] To provide better guidance and constraint for the slope reciprocating snow removal mechanism 7, in a further preferred embodiment, a longitudinal groove 521 is provided on the upper end face of the inner transverse extension plate 52, and a passive roller 733 is provided on the lower end face of the rod base 73 located inside the upper vertical sealing plate 54. The passive roller 733 engages and rolls within the longitudinal groove 521. A longitudinal groove 531 is provided on the lower end face of the outer transverse extension plate 53, and a passive roller 734 is fixed on the lower end face of the rod base 73 located outside the upper vertical sealing plate 54 via an L-shaped extension rod 732. The passive roller 734 engages and rolls within the longitudinal groove 531.

[0070] To better monitor the building's operational status in real time, in a further preferred embodiment, temperature and humidity sensors are installed at the internal gaps of the interlocking joints of adjacent metal roof panels 2. Roof displacement sensors are embedded at the upper ends of the omnidirectional floating base 42 and the end floating base 32. Structural vibration sensors are fixedly installed on the side walls of the steel longitudinal beam 17. The temperature and humidity sensors, roof displacement sensors, and structural vibration sensors are all electrically connected to the intelligent control unit, which is equipped with an alarm, which can be an audible and visual alarm. The temperature and humidity sensors are deployed at the interlocking joints of the metal roof panels 2 to monitor the snow accumulation, ice melting, and moisture leakage in the joints. They can also be used for linkage control with the slope reciprocating snow removal mechanism 7 to reduce the risk of water seepage and ice damage at the roof joints. The roof displacement sensor embedded in the upper end of the omnidirectional floating base 42 is used to collect real-time data on the vertical floating distance of the omnidirectional floating base 42 relative to the steel structure longitudinal beam 17, as well as the horizontal offset data along the front-back and left-right directions of the steel structure longitudinal beam 17. After being transmitted to the intelligent control unit, it can be used to realize wind load deformation monitoring and overload early warning. The roof displacement sensor embedded in the end floating base 32 is used to collect real-time data on the vertical floating distance of the end floating base 32 relative to the steel structure longitudinal beam 17. After being transmitted to the intelligent control unit, it can be used to realize wind load deformation monitoring and overload early warning. Due to the different installation structure of the end floating base 32, it is subject to the rigid limiting effect of the I-beam support 31. The end floating base 32 has basically no horizontal offset during operation. Therefore, it is generally only necessary to monitor the vertical buffer floating value to monitor the vertical deformation of the roof end. The structural vibration sensor fixed to the side wall of the steel longitudinal beam 17 is used to collect vibration parameters such as peak amplitude, instantaneous vibration frequency, continuous vibration duration, and peak change rate of the steel longitudinal beam 17 in real time, and to predict the risk of resonance and fatigue damage of the steel structure.

[0071] In a preferred embodiment of the present invention, it can generally be implemented according to the following control method, including the following steps:

[0072] Step S1, Real-time Perception and Monitoring Across the Entire Domain:

[0073] The system uses an inner wind pressure sensor, an outer wind pressure sensor, a snow thickness sensor, a roof displacement sensor, a temperature and humidity sensor, a structural vibration sensor, a tilt sensor, and a temperature sensing unit to synchronously collect real-time data on the wind pressure difference between the inside and outside of the roof, the snow thickness and distribution on the roof, structural displacement and deformation, the temperature and humidity of the interlocking joints of the metal roof panel 2, the vibration amplitude of the steel structure, the tilt attitude of the reciprocating snow removal mechanism 7, and the external temperature of the metal roof panel 2. All monitoring data is uploaded to the intelligent control unit in real time. The tilt sensor is used to calibrate the attitude of the reciprocating snow removal mechanism 7. The equipment periodically starts a no-load self-test. The intelligent control unit controls the slope reciprocating snow removal mechanism 7 to travel to the snow-free reference area in the middle of the roof. It collects the original tilt angle of the snow removal mechanism frame 71 under no-load conditions and stores it as the slope reference zero point. Then, it drives the slope reciprocating snow removal mechanism 7 from the top of the sloping roof to the bottom, collects multiple sets of tilt angle data at intervals, and calculates the slope offset of each point in combination with the slope reference zero point. It establishes and stores the "traveling position - slope offset" mapping data table to realize the pre-calibration of the slope at each position of the entire roof. During operation, the corresponding slope can be retrieved in real time to complete the attitude matching of the snow removal mechanism frame 71.

[0074] Step S2, Intelligent wind pressure balance and wind resistance control:

[0075] The intelligent control unit collects the arithmetic mean of all external wind pressure sensor values ​​in real time as the reference value for external wind pressure on the roof, and collects the arithmetic mean of all internal wind pressure sensor values ​​as the reference value for internal wind pressure on the roof. The real-time wind pressure difference between the external and internal wind pressure reference values ​​is calculated by subtracting the internal wind pressure reference value from the external wind pressure reference value. The intelligent control unit presets multiple wind pressure thresholds. When the monitored wind pressure difference between the internal and external wind pressure exceeds the corresponding threshold, the intelligent control unit performs operations in two stages: the first stage automatically starts the bidirectional exhaust fan 16 on the end cap 15, adaptively adjusting its speed and switching its ventilation direction to balance the air pressure based on the pressure difference; the second stage synchronously drives the diagonal bracing buffer. Device 43 is equipped with a hydraulic motor to adjust the extension length of the first electric telescopic rod 435. The greater the wind pressure, the greater the extension of the first electric telescopic rod 435, reducing the range of motion of the sliding block 434 and limiting the vertical and circumferential movement of the omnidirectional floating base 42, thus suppressing excessive offset and tearing of the metal roof panel 2 under strong winds. After the wind pressure drops to a safe range, the intelligent control unit controls the first electric telescopic rod 435 to retract, restoring the large buffer stroke. At the same time, combined with the structural displacement deformation and steel structure vibration amplitude data collected by the roof displacement sensor and structural vibration sensor, an audible and visual warning signal is output when the structural displacement deformation and steel structure vibration amplitude data exceed the threshold.

[0076] For early warning of structural displacement deformation and steel structure vibration amplitude, a dual mechanism of graded control and joint weighted judgment is adopted, and the specific rules are as follows:

[0077] (1) The first-level sound and light warning is triggered independently in two categories: ① Displacement warning: the roof displacement sensor of any single universal floating base 42 or end floating base 32 detects a value that exceeds the first-level displacement threshold, triggering the sound and light warning; ② Vibration warning: the amplitude or instantaneous frequency of any parameter detected by the structural vibration sensor of any steel structure longitudinal beam 17 exceeds the first-level vibration threshold, triggering the sound and light warning independently, and the system records the beam segment with abnormal vibration.

[0078] (2) Second-level shutdown judgment:

[0079] a. Multiple displacement exceeding limits only, no vibration exceeding limits: When the detection values ​​of two or more roof displacement sensors exceed the limits simultaneously, the comprehensive deformation value is calculated as follows: Comprehensive deformation value = average displacement of the middle point × 0.6 + average displacement of the end point × 0.4. If the comprehensive deformation value exceeds the secondary displacement threshold, a shutdown alarm is triggered; the weight of the middle point is 0.6, and the weight of the end point is 0.4; the middle point refers to the location of the universal floating base 42, and the end point refers to the location of the end floating base 32.

[0080] b. Only multiple steel structure longitudinal beams 17 have excessive vibration, but no displacement exceeds the limit: If the detection values ​​of the structural vibration sensors of two or more steel structure longitudinal beams 17 exceed the limit simultaneously, the average amplitude of the entire field is calculated as follows: Average amplitude of the entire field = Sum of the amplitudes of all steel structure longitudinal beams exceeding the limit ÷ Number of steel structure longitudinal beams exceeding the limit. If the average amplitude of the entire field exceeds the second-level vibration threshold, a shutdown alarm is triggered.

[0081] c. Simultaneous multi-point exceedance of displacement and vibration limits: The intelligent control unit calculates the roof comprehensive risk factor as follows: Roof comprehensive risk factor = comprehensive deformation value × 0.7 + average amplitude across the entire area × 0.3; Displacement deformation directly causes the risk of sheet metal tearing, with a weight of 0.7; Vibration causes long-term fatigue damage to the steel structure, with a weight of 0.3; When the roof comprehensive risk factor exceeds the secondary threshold of the overall control, a shutdown alarm is triggered.

[0082] Step S3, Fully Automatic Intelligent Snow Removal and Ice Melting Control:

[0083] The intelligent control unit presets the snow thickness threshold and the icing temperature threshold. When the snow thickness sensor detects that the snow thickness on the roof reaches the activation threshold, or when the temperature and humidity sensor detects that the temperature of the interlocking joint of the metal roof panel 2 is lower than the icing threshold, the intelligent control unit automatically starts the slope reciprocating snow removal mechanism 7.

[0084] After completing the attitude calibration of the snow removal mechanism frame 71 and the roof slope matching, the pre-sweeping preparation process is executed; the slope reciprocating snow removal mechanism 7 is initially and normally stopped at the upper stroke limit position on the sloping roof; the intelligent control unit drives the hydraulic motor of the counterweight assembly 74 to retract the second electric telescopic rod, suspending the counterweight block in the air. Combined with the roof slope parameters collected by the tilt sensor, the retraction stroke of the second electric telescopic rod is precisely adjusted. Relying on the self-weight of the counterweight block, a downward tilting auxiliary torque adapted to the slope is generated, so that the snow removal roller 753... The counterweight is closely fitted to the concave trough 24 of the metal roof panel 2. After the counterweight is adjusted to the correct position, the temperature sensing unit detects the temperature of the snow and ice in the area where the concave trough 24 is located in real time. When the temperature is lower than the preset value, the heating wire inside the snow removal roller 753 is automatically turned on to preheat and melt the ice. After the preheating and melting process is completed, the intelligent control unit starts the snow removal roller 753 to keep it rotating continuously, and synchronously drives the entire slope reciprocating snow removal mechanism 7 to move downward at a uniform speed from the initial position at the top, and enters the snow recognition and reciprocating sweeping process in step S4.

[0085] When the slope reciprocating snow removal mechanism 7 descends to its lower travel limit and completes a single sweep, the intelligent control unit judges the sweeping effect based on the snow thickness sensor and performs two branch actions:

[0086] ① Snow not cleared: Keep the counterweight suspended, snow removal roller 753 continues to rotate, slope reciprocating snow removal mechanism 7 folds back upward for secondary cleaning, and continues to execute the reciprocating cleaning logic of step S4;

[0087] ② Snow removal meets the standard: pause the rotation of snow removal roller 753, then drive the slope reciprocating snow removal mechanism 7 to move in the opposite direction and reset to the initial stopping position at the top of the roof; the hydraulic motor extends the counterweight telescopic rod, the counterweight block falls and supports the surface of the metal roof panel 2, eliminating the counterweight tilting and pulling torque, and the equipment stop reset logic corresponding to step S5 is executed.

[0088] Throughout the snow removal operation, the intelligent control unit reads the real-time data from the tilt sensor at regular intervals, uses a moving average method to reduce noise in the sampled data, caches multiple consecutive sets of time-series tilt values ​​and calculates the average value to offset the instantaneous tilt fluctuations caused by gusts of wind. Based on the stable tilt parameters after noise reduction, the extension and retraction stroke of the second electric telescopic rod is finely adjusted in real time. The greater the slope, the lower the counterweight block is lowered to increase the trough contact torque, and the gentler the slope, the more the counterweight block is retracted. Even if the roof is in a state of continuous vibration and deformation, it can continuously and dynamically match the actual slope of the roof to ensure that the snow removal roller 753 stably contacts the concave trough 24 of the metal roof panel 2 to complete the sweeping and ice melting operations.

[0089] Step S4, Adaptive reciprocating cleaning operation control:

[0090] The snow thickness sensor collects real-time snow distribution data at various locations on the metal roof panel 2. The intelligent control unit has a built-in snow thickness judgment threshold. When the snow thickness sensor detects a value greater than the preset threshold, the intelligent control unit marks the current walking coordinate point as a thick snow area. When the snow thickness sensor detects a value less than or equal to the preset threshold, it is judged as a normal thin snow area.

[0091] The intelligent control unit prioritizes locating the coordinates of the marked thick snow area and performs fixed-point cleaning: the slope reciprocating snow removal mechanism 7 moves to the corresponding point in the thick snow area and remains stationary, while the snow removal roller 753 continues to rotate in place to continuously clean the thick snow accumulated in the concave trough 24 of the metal roof panel 2; once the value returned by the snow thickness sensor drops below the threshold, it is determined that the thick snow at that point has been cleared. Subsequently, the slope reciprocating snow removal mechanism 7 moves downward at a constant speed from the current thick snow point to the lower stroke limit position. This complete stroke is recorded as a single cleaning operation.

[0092] After the slope reciprocating snow removal mechanism 7 reaches the lower limit position, it re-scans the snow distribution status within the entire movement stroke. If there are still multiple thick snow points, it controls the slope reciprocating snow removal mechanism 7 to turn back upwards and go to the remaining thick snow points in turn to repeat fixed-point cleaning, and repeats the cycle.

[0093] Throughout the snow removal operation, data from the roof displacement sensor of the omnidirectional floating base 42 and the structural vibration sensor of the steel longitudinal beam 17 are continuously collected. The safety status of the roof structure is determined according to the dual mechanism of graded control and joint weighted judgment described in step S2. Once the displacement and vibration parameters reach the second-level shutdown threshold, the intelligent control unit immediately stops all walking and sweeping actions of the slope reciprocating snow removal mechanism 7 and pushes a roof structure fault warning to the intelligent control unit to avoid damage to the metal roof panel 2 and the roof steel structure frame caused by the additional load of snow accumulation and wind load.

[0094] Step S5, Shutdown Reset and Routine Monitoring:

[0095] Once all the snow on the concave troughs 24 of the full-area metal roof panel 2 has been cleared and the ambient temperature has risen to a safe range, the intelligent control unit executes the whole machine reset and lock process, controls the slope reciprocating snow removal mechanism 7 to move upward, reset to the upper stroke limit position and complete the mechanical lock; simultaneously, the snow removal roller 753's rotation cleaning function and the snow removal roller 753's internal heating wire preheating and ice melting function are turned off, the counterweight block of the counterweight component 74 is released from suspension, the counterweight block falls and supports the upper surface of the metal roof panel 2, and the whole machine remains stationary and stable;

[0096] After the equipment is locked and docked, it automatically cycles through the entire closed-loop intelligent control process from S1 to S5.

Claims

1. A disaster prevention and mitigation system for a steel-framed building with a metal roof, comprising a main roof support frame (1) and metal roof panels (2), wherein the metal roof panels (2) constitute a roof panel system for a double-sloped roof structure, the roof panel system having two sloping roof surfaces inclined in the left-right direction; the main roof support frame (1) comprises multiple parallel steel longitudinal beams (17), each steel longitudinal beam (17) extending in the front-back direction, the upper surface of the steel longitudinal beam (17) forming an installation slope adapted to the sloping roof surface, characterized in that, The roof panel system is installed on the steel structure longitudinal beam (17) via several universal wind-resistant pressure-distributing linkage components (4). Each universal wind-resistant pressure-distributing linkage component (4) includes a circular box-shaped fixed base (41), a universal floating base (42), a diagonal bracing buffer device (43), a movable support device (44), and a pressure-distributing locking bolt device (45). The metal roof panel (2) is fixedly connected to the universal floating base (42) via the pressure-distributing locking bolt device (45). The circular box-shaped fixed base (41) includes... The base partition (412) and the circular box-shaped base (411) with a top opening are fixedly installed on the upper surface of the steel structure longitudinal beam (17). The base partition (412) is arranged laterally inside the circular box-shaped base (411) and divides the interior of the circular box-shaped base (411) into upper and lower parts. A support column limiting hole (415) is provided at the center of the base partition (412). The universal floating base (42) is located above the center of the circular box-shaped base (411). The movable support device (44) includes a limiting base (441), a damper (442), a spring (443), a support column (444), a bottom limiting plate (445), a top limiting plate (446), and a pressure-dividing disc spring (447). The axis of the support column (444) is perpendicular to the sloping roof. The support column (444) is movably installed in the limiting hole (415) of the support column. The limiting base (441) is fixedly installed on the top of the support column (444). The lower end of the damper (442) is fixed on the limiting base (441), and the upper end of the damper (442) is fixed to the universal floating base (42). The spring (443) is sleeved on the outside of the damper (442) and fixed to the universal floating base (42). Between the limiting base (441); the bottom limiting plate (445) is fixedly installed at the bottom of the support column (444), the pressure-dividing disc spring (447) and the top limiting plate (446) are both sleeved on the support column (444), the pressure-dividing disc spring (447) is fixedly installed between the bottom limiting plate (445) and the top limiting plate (446), the upper end face of the top limiting plate (446) and the lower end face of the bottom limiting plate (445) are provided with universal balls (448), the universal balls (448) of the bottom limiting plate (445) form rolling contact with the bottom of the inner cavity of the round box-shaped base (411), and the universal balls (448) of the top limiting plate (446) form rolling contact with the lower surface of the base partition (412); At least three inclined bracing buffer devices (43) are provided and spaced apart on the outer periphery of the universal floating base (42); each inclined bracing buffer device (43) includes a sliding rod (431), a fixed block (432), a first sliding block (433), a second sliding block (434), a first electric telescopic rod (435), a second spring (436), and an inclined bracing rod (437). The fixed block (432) is fixed on the upper surface of the base partition plate (412) and located at the edge of the support column limiting hole (415). The axial direction of the sliding rod (431) is arranged along the radial direction of the support column (444). One end of the sliding rod (431) is fixed on the fixed block (432), and the other end is fixed on the inner wall of the circular box-shaped base (411); the sliding block Both sliding block 1 (433) and sliding block 2 (434) are slidably sleeved on sliding rod (431). Sliding block 2 (434) is closer to the support column limiting hole (415) than sliding block 1 (433). Spring 2 (436) is sleeved on sliding rod (431). Spring 2 (436) is fixed between sliding block 1 (433) and sliding block 2 (434). One axial end of the first electric telescopic rod (435) is fixed on sliding block 1 (433), and the other end is fixed on the inner wall of the round box-shaped base (411). One axial end of the diagonal brace (437) is connected to the universal floating base (42) through universal joint (438), and the other end is connected to sliding block 2 (434) through universal joint (438).

2. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 1, characterized in that, A ring-shaped support platform (416) is fixedly connected to the top opening of the round box-shaped base (411); the bottom of the round box-shaped base (411) is connected to the steel structure longitudinal beam (17) through the base fixing bolt (414); the bottom of the inner cavity of the round box-shaped base (411) is provided with a base fixing bolt countersunk hole that matches the base fixing bolt (414); a pad plate (413) is laid at the bottom of the inner cavity of the round box-shaped base (411); the universal ball (448) of the bottom limiting plate (445) forms a rolling contact with the upper surface of the pad plate (413).

3. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 1, characterized in that, The main load-bearing frame (1) of the roof includes steel structure columns (11), steel structure main beams (12) and transverse bracing (14). The steel structure columns (11) are arranged in two rows and symmetrically installed on the ground. The steel structure main beams (12) are arranged in several parallel positions. The left and right ends of each steel structure main beam (12) are fixedly installed on the top of the two symmetrical steel structure columns (11). Each steel structure main beam (12) is provided with two transverse bracing (14), and the two transverse bracing (14) are erected in a V-shape on the steel structure main beam (12). The lower surface of the transverse bracing (14) and the upper surface of the steel structure main beam (12) are connected and fixed by several vertically arranged beam support columns (13). The steel structure longitudinal beam (17) is fixedly installed on the upper surface of the transverse bracing (14).

4. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 3, characterized in that, The system includes an intelligent control unit. The main steel beams (12) at the front and rear ends are respectively surrounded by two corresponding transverse diagonal braces (14) to form an end sealing plate installation area. An end sealing plate (15) is fixedly installed in the end sealing plate installation area. Multiple bidirectional exhaust fans (16) are provided on the end sealing plate (15). The lower surface of the roof panel system is provided with an eaves end waterproof filling layer (18) at the left and right ends and the front and rear ends of the installation gap formed relative to the main roof support frame (1). The main load-bearing frame (1) of the roof has an enclosure wall in the area below the main crossbeam (12) of the steel structure. The inner wall of the enclosure wall, the inner wall of the end sealing plate (15) and the lower surface of the metal roof panel (2) form a relatively closed inner wind pressure monitoring cavity. An inner wind pressure sensor is installed in the inner wind pressure monitoring cavity, and an outer wind pressure sensor is installed in the outer area of ​​the roof panel system. The inner wind pressure sensor, the outer wind pressure sensor, the bidirectional exhaust fan (16) and the first electric telescopic rod (435) are all electrically connected to the intelligent control unit.

5. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 1, characterized in that, The omnidirectional wind-resistant pressure-distributing linkage component (4) is located in the middle area of ​​the roof panel system in the front-to-back direction. The two ends of the roof panel system in the front-to-back direction are connected to the steel structure longitudinal beams (17) through the end support fixing component (3). The end support fixing component (3) includes an I-beam support (31), an end floating base (32), an end fixing bolt (33), an end disc spring (34), and an end locking bolt device (36). The metal roof panel (2) is fixedly connected to the end floating base (32) through the end locking bolt device (36). The I-beam support (31) is inclined along the slope of the sloping roof and installed on the upper surface of the ends of several steel structure longitudinal beams (17). The I-beam support (31) is composed of an outer vertical steel plate, an inner vertical steel plate, and a middle transverse steel plate. The transverse steel plate is connected between the outer vertical steel plate and the inner vertical steel plate; multiple sets of end disc springs (34) are arranged at intervals along the length of the I-beam support (31), and two end disc springs (34) are arranged in each set, and are respectively placed on the upper and lower sides of the middle transverse steel plate of the I-beam support (31); the axial direction of the end fixing bolt (33) is perpendicular to the sloping roof, the upper end of the end fixing bolt (33) is fixedly connected to the end floating base (32), and the lower end of the end fixing bolt (33) is arranged through the center of each set of two end disc springs (34), and passes through the support fixing hole of the middle transverse steel plate and the steel structure longitudinal beam (17) of the I-beam support (31). The lower end of the end fixing bolt (33) is locked and fixed by the end bolt cap (35).

6. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 5, characterized in that, The longitudinal section of the metal roof panel (2) is wavy. Each metal roof panel (2) includes a raised peak (23), a concave trough (24), and interlocking locking grooves A (21) and B (22) located at both ends of its longitudinal direction. Interlocking locking grooves A (21) and B (22) are both multi-layer board structures with side openings. Interlocking locking grooves A (21) and B (22) interlock through their side openings so that adjacent metal roof panels (2) can be interlocked to form a roof panel system. The upper layer of interlocking locking groove B (22) is located at the top of the interlocking splice of the metal roof panel (2). Universal wind-resistant pressure-distributing linkage components (4) are provided at the interlocking splice of adjacent metal roof panels (2). The front and rear ends of the roof panel system are respectively provided with end sealing restraint components. Each end sealing restraint component includes a lower vertical sealing plate (51) and an inner transverse extension plate (52). The lower vertical sealing plate (51) is attached to the outer surface of the outer vertical steel plate of the I-beam support (31). The lower vertical sealing plate (51) and the outer vertical steel plate of the I-beam support (31) are fixedly connected by I-beam fixing bolts (38). The inner transverse extension plate (52) is fixedly installed on the inner side of the top of the lower vertical sealing plate (51). The end edge sealing constraint component located at one end of the front and rear direction of the roof panel system is end edge sealing constraint component one (5), and the end edge sealing constraint component at the other end is end edge sealing constraint component two (6). The end sealing constraint component 1 (5) also includes an interlocking locking groove C (57), which is fixedly connected to the end of the inner transverse extension plate (52). The interlocking locking groove C (57) of the end sealing constraint component 1 (5) has the same structure as the interlocking locking groove B (22) of the metal roof panel (2). The interlocking locking groove C (57) and the interlocking locking groove A (21) of the metal roof panel (2) located at the end form an interlocking splice. The interlocking splice of the interlocking locking groove C (57) of the end sealing constraint component 1 (5) and the interlocking locking groove A (21) of the metal roof panel (2) located at the end is fixed to the end floating base (32) by the end locking bolt device (36). The end sealing constraint component 2 (6) also includes an interlocking locking groove D (58), which is fixedly connected to the end of the inner transverse extension plate (52). The interlocking locking groove D (58) of the end sealing constraint component 2 (6) has the same structure as the interlocking locking groove A (21) of the metal roof panel (2). The interlocking locking groove D (58) and the interlocking locking groove B (22) of the metal roof panel (2) located at the end form an interlocking splice. The interlocking splice of the interlocking locking groove D (58) of the end sealing constraint component 2 (6) and the interlocking locking groove B (22) of the metal roof panel (2) located at the end is fixed to the end floating base (32) by the end locking bolt device (36).

7. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 6, characterized in that, A downward-extending rain and snow shielding plate (221) is fixedly connected to the outer side of the upper plate of the interlocking groove B (22); the rain and snow shielding plate (221) is used to shield the outer end gap between the upper plate of the interlocking groove B (22) and the upper plate of the interlocking groove A (21).

8. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 6, characterized in that, Several sets of splicing fixing holes are provided at the interlocking splice of the end edge sealing constraint component 1 (5) and the metal roof panel (2), the interlocking splice of the end edge sealing constraint component 2 (6) and the metal roof panel (2), and the interlocking splice of two adjacent metal roof panels (2). Each set of splicing fixing holes includes a fixing main hole (25) and multiple fixing secondary holes (26) arranged at intervals around the fixing main hole (25). The pressure-dividing locking bolt device (45) includes a main bolt (451), a washer (452), and a secondary bolt (453). The main bolt (451) is inserted through the fixing main hole (25) of the metal roof panel (2). The head end of the main bolt (451) is provided with a secondary bolt limiting hole (4511) corresponding to the position of the fixing secondary hole (26) of the metal roof panel (2). At least two secondary bolts (453) are provided, and the secondary bolts (453) are inserted through the secondary bolt limiting hole (4511) and... The main bolt (451) and the secondary bolt (453) are both set with their heads facing upwards. The washer (452) is set between the upper surface of the metal roof panel (2) and the head of the main bolt (451), and is also set between the upper surface of the metal roof panel (2) and the head of the secondary bolt (453). Multiple internal threaded sleeves are pre-embedded and fixed on the upper surface of the universal floating base (42). The main bolt (451) and the secondary bolt (453) are threadedly connected and fixed to the internal threaded sleeves one by one. The end floating base (32) has the same structure as the universal floating base (42), and the end locking bolt device (36) has the same structure as the pressure-dividing locking bolt device (45).

9. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 6, characterized in that, Includes an intelligent control unit and a slope reciprocating snow removal mechanism (7), with one slope reciprocating snow removal mechanism (7) installed for each sloping roof. The universal wind-resistant pressure-dividing linkage component (4) includes a pressure-dividing component chute device (46), which includes a chute base (461) and a rotating base (462). The length direction of the chute base (461) is inclined along the slope of the sloping roof. The upper end face of the chute base (461) is provided with a longitudinal chute along its length direction. The rotating base (462) is rotatably provided on the lower end face of the chute base (461). Multiple rotating bases (462) are spaced apart along the length direction of the chute base (461). A pin (463) is fixedly provided at the lower end of each rotating base (462). The pin (463) of the pressure-dividing component chute device (46) is axially perpendicular to the sloping roof and is inserted into the interlocking joint of two adjacent metal roof panels (2) along its axial direction. The end support fixing component (3) includes an end component slide groove device (37), which has the same structure as the pressure dividing component slide groove device (46). The pin (463) of the end component slide groove device (37) is inserted into the interlocking joint between the end sealing edge restraint component and the metal roof panel (2) along its axial direction. The end sealing constraint components all include an outer transverse extension plate (53), an upper vertical sealing plate (54), a snow removal mechanism limiting component (55), and an end component slide groove (56); the outer transverse extension plate (53) is fixedly installed on the outer side of the top of the lower vertical sealing plate (51), and the upper vertical sealing plate (54) is vertically fixedly installed on the top of the lower vertical sealing plate (51) or on the upper surface of the outer transverse extension plate (53); the end component slide groove (56) is fixedly installed on the top surface of the upper vertical sealing plate (54), and the extension direction of the end component slide groove (56) is consistent with the longitudinal slide groove of the pressure dividing component slide groove device (46); the snow removal mechanism limiting component (55) is used to limit the upper stroke limit position and the lower stroke limit position of the slope reciprocating snow removal mechanism (7); Each slope reciprocating snow removal mechanism (7) includes a snow removal mechanism frame (71), a rod assembly, a counterweight assembly (74), and a snow removal assembly (75). The snow removal mechanism frame (71) is set above the metal roof panel (2). Several rod assemblies are set between each snow removal mechanism frame (71) and each end sealing constraint assembly. Each rod assembly includes rods (72) arranged on the inner and outer sides of the upper vertical sealing plate (54). The axial direction of the rods (72) is perpendicular to the sloping roof. The upper end of the rods (72) is fixed on the snow removal mechanism frame (71). The lower end of each rod (72) is fixedly provided with a rod base (73). A power roller (731) is provided on the end face of the rod base (73) near the upper vertical sealing plate (54). The power roller (731) is perpendicular to the upper vertical sealing plate (54). The straight edge sealing plates (54) are attached together and rotated by a motor; the inner side of the upper vertical edge sealing plate (54) is provided with a longitudinal groove three (541) for cooperating with the power roller (731), and the outer side of the upper vertical edge sealing plate (54) is provided with a longitudinal groove four (542) for cooperating with the power roller (731); the lower end face of the snow removal mechanism frame (71) is provided with a passive roller one (711), a passive roller two (712) and a passive roller three (713). The passive roller one (711) is engaged in the end component slide groove (56) and rolls, the passive roller two (712) is engaged in the longitudinal slide groove of the end component slide groove device (37) and rolls, and the passive roller three (713) is engaged in the longitudinal slide groove of the pressure dividing component slide groove device (46) and rolls. The counterweight assembly (74) is located in the area of ​​the concave trough (24) of the metal roof panel (2). Multiple counterweight assemblies (74) are arranged in parallel. Each counterweight assembly (74) includes a second electric telescopic rod and a counterweight block. The upper end of the second electric telescopic rod is fixed to the snow removal mechanism frame (71). The counterweight block is connected to the lower end of the second electric telescopic rod by a soft cable or chain. The second electric telescopic rod enables the counterweight block to have a first state of falling and supporting on the metal roof panel (2) and a second state of being suspended in the air without contacting the metal roof panel (2). Snow removal components (75) are located in the area of ​​the concave trough (24) of the metal roof panel (2). Multiple snow removal components (75) are arranged side by side. Each snow removal component (75) includes an outer sleeve (751), an inner core rod (752), a snow removal roller (753), and a snow removal buffer spring (754). The axis of the snow removal roller (753) is horizontally arranged along the front-to-back direction. The inner core rod (752) is respectively arranged at both ends of the axial direction of the snow removal roller (753). The snow removal roller (753) is installed at the lower end of the inner core rod (752) and rotated by a motor. Metal bristles are installed on the outer wall of the periphery of the snow removal roller (753). The snow removal roller (753) is equipped with an electric heating wire; the upper end of the outer sleeve (751) is fixed on the snow removal mechanism frame (71), the inner core rod (752) is inserted into the lower opening end of the outer sleeve (751) one by one, the snow removal buffer spring (754) is sleeved on the upper end of the inner core rod (752), and the two axial ends of the snow removal buffer spring (754) are respectively fixed on the spring limiter on the outer wall of the inner core rod (752) and the inner end wall of the outer sleeve (751). The snow removal mechanism frame (71) is provided with a temperature sensing unit for detecting the external temperature of the metal roof panel (2) in the area where the snow removal component (75) is located. The top of the snow removal mechanism frame (71) is fixedly equipped with an inclination sensor for detecting its tilt attitude. The metal roof panel (2) has a snow thickness sensor embedded on the outer surface of the concave trough (24). The inclination sensor, snow thickness sensor, temperature sensing unit, snow removal assembly (75) and second electric telescopic rod are all electrically connected to the intelligent control unit.

10. The disaster prevention and mitigation system for metal roof steel structure buildings according to claim 9, characterized in that, A longitudinal groove (521) is provided on the upper end face of the inner transverse extension plate (52). A passive roller (733) is provided on the lower end face of the hanger base (73) located inside the upper vertical sealing plate (54). The passive roller (733) is engaged in the longitudinal groove (521) and rolls. A longitudinal groove (531) is provided on the lower end face of the outer transverse extension plate (53). A passive roller is fixed on the lower end face of the hanger base (73) located outside the upper vertical sealing plate (54) by an L-shaped extension rod (732). Five (734), the passive roller five (734) is engaged in the longitudinal groove two (531) and rolls; a temperature and humidity sensor is installed in the internal gap of the interlocking splicing of the adjacent metal roof panels (2), a roof displacement sensor is embedded in the upper end of the universal floating base (42) and the upper end of the end floating base (32), and a structural vibration sensor is fixedly installed on the side wall of the steel structure longitudinal beam (17); the temperature and humidity sensor, the roof displacement sensor and the structural vibration sensor are all electrically connected to the intelligent control unit, and the intelligent control unit is equipped with an alarm.

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