Wind uplift resistant system and method for large-span metal roof

Abstract

The invention belongs to a metal roof wind uplift resisting technology, and particularly relates to a large-span metal roof wind uplift resisting system and method. A connecting frame is arranged at the transverse end of the metal roof, a structure which can be adjusted in position along with the wind direction and the wind speed and pre-press the metal roof downwards is arranged on the top of the metal roof, namely a transverse moving body, and whether the wind resistance strength of the end of the metal roof on the wind direction side is enhanced or not is judged according to the wind direction and the wind speed monitored by a wind direction sensor and a wind speed sensor in real time. And if a set value is exceeded, the traction equipment starts to work, and the transverse moving body is close to one end of the wind direction side, so that the downward pre-pressing degree structural stability of the metal roof at the end is enhanced, and the mechanical property of wind lifting resistance is improved.

Description

Technical Field

[0001] The invention belongs to the technology of wind uplift resistance for metal roofs, and particularly relates to a wind uplift resistance system and method for large-span metal roofs. Background Art

[0002] Steel structure buildings are gradually becoming substitutes for concrete structures due to many advantages such as light weight, high strength, rapid construction, green energy conservation, and the ability to achieve large-span shaping. In some special fields, they have become the mainstream application, and higher requirements are also put forward for the roof system that cooperates with steel structure buildings. As an important roof system, metal roofs are widely promoted and applied in China.

[0003] Metal roofs can not only achieve the normal functions of wind and rain resistance, but also give the building a stronger sense of modernity and the flavor of the times, and conform to the principle of green environmental protection and sustainable development. Therefore, they are widely used in the roofs of large modern public buildings such as airport terminals, large exhibition halls, stadiums, and new railway stations.

[0004] Traditional metal roofs are all provided with metal structural members to achieve wind uplift resistance performance in strong wind weather. However, in the past, such roofs were installed on metal roofs. Especially in the case of side crosswinds, this type of roof structure is prone to occur. Since most existing metal roofs use longitudinal skeletons arranged along the roof drainage direction, there is a lack of structure on the lateral side of large-span steel structure metal roofs to restrict the outward lifting of the metal roof, and thus the problem of the metal roof being lifted outward is likely to occur. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: aiming at the problem that there is a lack of structure on the lateral side of the large-span steel structure metal roof to restrict the outward lifting of the metal roof, and it is easy to have the problem of the metal roof being lifted outward.

[0006] In order to solve the above technical problems, the inventors obtained the technical solution of the present invention through practice and summary. The present invention adopts the following technical solutions:

[0007] A wind uplift resistance system for large-span metal roofs, comprising:

[0008] A keel assembly, which is installed on the top of the main frame;

[0009] A metal roof, which is installed on the keel assembly, and a longitudinal positioning rib is provided on the top of the metal roof;

[0010] A transverse member, which is located on the top of the longitudinal positioning rib and an installation groove is provided at the bottom, and the installation groove is inserted on the longitudinal positioning rib;

[0011] A clamping member, which is installed on the longitudinal positioning rib to fixedly connect the transverse member and the longitudinal positioning rib;

[0012] A laterally moving body, which is movably fitted on a lateral member;

[0013] Steel wire strands, there are two sets of steel wire strands, and they are longitudinally symmetrically distributed on the laterally moving body. The two sets of steel wire strands are distributed in an X-shaped structure, and both ends of the steel wire strands are respectively fixed to the two lateral ends of the main frame;

[0014] Traction ropes, there are two sets of traction ropes, and the two sets are respectively installed at the two lateral ends of the laterally moving body;

[0015] A pulling device, which is installed at the two lateral ends of the main frame. The output end of the pulling device is connected to the traction rope and is used to pull the laterally moving body.

[0016] In the solution of the present application, a connecting frame is installed at the lateral end of the main frame. There is a first fixed pulley and a second fixed pulley on the connecting frame. The first fixed pulley is vertically installed in the middle of the top surface of the connecting frame and is used for winding the traction rope. There are two sets of the second fixed pulleys, which are symmetrically distributed on both sides of the first fixed pulley respectively. The second fixed pulleys are used for winding the steel wire strands;

[0017] Among them, a wind speed sensor and a wind direction sensor are installed on the connecting frame. The wind speed sensor is used to monitor the real-time wind speed, and the wind direction sensor is used to monitor the wind direction in real time and transmit the signal to the control module. The control module outputs a signal to control the extension amount of the output end of the pulling device.

[0018] In the solution of the present application, two sets of vertical plates are installed on the connecting frame, and each set of vertical plates has two;

[0019] A longitudinal rotating shaft is rotatably installed on each set of vertical plates. An installation frame is installed on the longitudinal rotating shaft. There are two vertical rotating shafts on the installation frame. Each set of the second fixed pulleys has two, and each vertical rotating shaft is respectively used for installing the corresponding second fixed pulley.

[0020] In the solution of the present application, the clamping member includes a first fixed piece and a second fixed piece. The first fixed piece and the second fixed piece are respectively located on both sides of the longitudinal positioning rib. The first fixed piece and the second fixed piece are connected by bolts and fixed on the longitudinal positioning rib;

[0021] Eardrums are provided at the tops of the first fixed piece and the second fixed piece, and the eardrums are fixedly installed on the side of the lateral member.

[0022] In the solution of the present application, the lateral member includes a transverse top plate and a vertical bottom plate, and the transverse top plate is fixedly installed on the top of the vertical bottom plate;

[0023] The laterally moving body includes a top frame and a rolling assembly. Connecting heads are provided at both ends of the top frame, and the connecting heads are fixedly connected to the traction ropes. The rolling assembly is installed below the top frame, and the rolling assembly is movably installed on the transverse top plate.

[0024] In the solution of this application, a compensation structure is installed on the lateral moving body. The compensation structure includes telescopic devices symmetrically installed on the top frame and rollers distributed on both sides of the corresponding telescopic devices. The opposite ends of the telescopic devices are both output ends, and horizontal wheels are installed at the ends. The horizontal wheels are used to drive the steel strand to be in a certain tension state.

[0025] In the solution of this application, the pulling device includes a driving cylinder, a guide rail, a first guide wheel, and a second guide wheel.

[0026] The driving cylinder and the guide rail are both vertically arranged on the side of the main body frame. The guide rail is installed below the driving cylinder. A moving block is installed on the piston rod of the driving cylinder, and the moving block is slidably fitted in the guide rail.

[0027] The first guide wheel and the second guide wheel are respectively installed on the main body frame. The first guide wheel is directly below the first fixed pulley, and the second guide wheel is arranged at the top of the guide rail to control the traction rope in this section to be in a vertical state.

[0028] In the solution of this application, a locking block is rotatably installed on the moving block, and a torsion spring is installed at the rotation node. One end of the locking block is provided with a locking portion, and the other end is provided with a magnetic attracting portion. An electromagnet is installed on the moving block, and the electromagnet corresponds to the position of the magnetic attracting portion.

[0029] A number of continuously arranged limiting grooves are provided on one side of the guide rail, and the locking portion is selectively adapted to the limiting grooves.

[0030] A construction method for a large-span metal roof wind uplift resistance system includes the following:

[0031] Step 1, clamping the main body frame

[0032] Level the ground, draw the installation boundary line of the main body frame on the leveled ground, and install the main body frame according to the installation boundary line.

[0033] Step 2, clamping the keel assembly

[0034] Between the main body frames, the keel assembly is installed on the top of the main body frame in batches by a hoisting vehicle to form a keel network.

[0035] Step 3, installing the metal roof

[0036] On the top of the keel assembly, the metal roof is installed through a connecting piece, and adjacent metal roofs are assembled through longitudinal positioning ribs.

[0037] Step 4, installing the transverse member

[0038] Install fixing piece one and fixing piece two on both sides of the longitudinal positioning rib at the top of the metal roof. Adjust the position of the clamping piece according to the installation position of the set transverse member, and then lock and fix fixing piece one and fixing piece two with bolts. Install fixing piece one and fixing piece two on both sides of the transverse member through the connection holes on the ear plates to complete the installation of the transverse member, ensuring that the installed transverse member is in a horizontal state;

[0039] Step 5, install the transverse moving body

[0040] Install a rolling assembly on the transverse roof plate of the transverse member. The rolling assembly and the transverse roof plate are in rolling fit. Install traction ropes at the connecting heads at both ends of the top frame, install two steel strands on the top frame, and use horizontal wheels and rollers to restrict the steel strands. The steel strands are distributed in an X-shaped structure on the top frame;

[0041] Step 6, install the connecting frame

[0042] Install a connecting frame on the main frame at the transverse end of the metal roof, and install a first fixed pulley, a second fixed pulley, and a wind sensor on the connecting frame;

[0043] Both ends of the steel strand are respectively wound around the second fixed pulley and installed on the main frame at the transverse end of the metal roof;

[0044] Step 7, install the pulling device

[0045] Install a driving cylinder, a guide rail, a first guide wheel, and a second guide wheel on the main frame at the transverse end of the metal roof. A moving block is connected to the end of the driving cylinder. A locking block is installed on the moving block, and the locking block and the limiting groove of the locking groove are selectively adapted;

[0046] The traction rope bypasses the first fixed pulley, the first guide wheel, the second guide wheel and is connected to the moving block;

[0047] Step 8, system debugging

[0048] Move the transverse moving body to the center of the top of the metal roof, and adjust the steel strand to be in a tensioned state by adjusting the telescopic device. The output ends of the driving cylinders are all in a semi-extended state;

[0049] When there is a lateral crosswind, the wind speed sensor monitors the wind speed at the transverse end of the metal roof in real time, the wind direction sensor monitors the wind direction at the transverse end of the metal roof in real time and uploads the signal to the control module. When the wind speed exceeds the set value, the control module outputs a signal. The output end of the driving cylinder on the windward side extends outward to drive the locking block to move downward along the guide rail. The electromagnet on the moving block on the other side is energized and adsorbs the magnetic attracting part at the same time. The locking block is separated from the limiting groove, and the output end of the driving cylinder retracts inward to drive the locking block to move upward along the guide rail by the same amount of displacement;

[0050] The transverse moving body will move a set distance against the windward side, increasing the pre-compression force of the metal roof on the windward side and ensuring the wind resistance performance on the windward side.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. The present invention is provided with a connecting frame at the horizontal end position of the metal roof, and a structure that can adjust its position according to the wind direction and wind speed and pre-press the metal roof downward at the top, that is, a horizontal moving body. According to the wind direction and wind speed monitored by the wind direction sensor and the wind speed sensor in real time, it is judged whether to strengthen the wind resistance of the metal roof end on the windward side. If it exceeds the set value, the pulling device will start to work, move the horizontal moving body closer to the windward end, thereby strengthening the downward pre-pressing degree of the metal roof at this end and the structural stability, and improving the mechanical properties of wind resistance.

[0053] 2. The steel wire ropes on the horizontal moving body of the present invention are distributed in an X-shaped structure, and their ends are fixedly installed on the horizontal ends of the main frame. Due to the change of the horizontal position of the horizontal moving body, the top force application point of the horizontal member moves towards the windward side. At the same time, the telescopic device in the horizontal moving body will push the steel wire ropes outwards to a certain extent, so that without changing the overall length of the steel wire ropes, the tension degree of the steel wire ropes is effectively adjusted and is greater than the tension degree when the horizontal moving body is in the middle, thereby enhancing the structural stability of the metal roof and achieving the effect of improving the wind resistance performance.

[0054] 3. The pulling device installed on the main frame of the present invention uses the driving cylinder of the pulling device. The output end of the driving cylinder pushes the moving block downward, and the moving block moves downward along the guide rail. By controlling the downward movement amount, the quantitative displacement amount of the horizontal moving body towards the windward side is controlled, so as to adapt to the wind resistance at this wind speed. During the pre-tightening adjustment of the metal roof, the driving cylinder on the windward side extends, and the driving cylinder on the leeward side retracts, and the extension amount of the driving cylinder is equal to the retraction amount. At the same time, the locking block rotatably connected to the moving block is used to lock the downward movement amount in time, avoiding the release of the acting force at the output end of the driving cylinder under the action of wind force, and preventing the problem that the output end of the driving cylinder is bent and deformed due to excessive instantaneous wind force. Secondly, the traction rope is guided by the fixed pulley one, the guide pulley one, and the guide pulley two, so that the force of the traction rope acting on the moving block is always in the vertical direction, which is conducive to the stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 is the overall structural schematic diagram of the present invention.

[0056] Figure 2 is Figure 1 the partial enlarged view at A in

[0057] Figure 3 is Figure 2 the overall structural schematic diagram of the fixing piece one in

[0058] Figure 4This is the front view of the connecting frame of the present invention.

[0059] Figure 5 This is the top view of the connecting frame of the present invention.

[0060] Figure 6 This is the partial structural schematic diagram of the transverse member of the present invention.

[0061] Figure 7 This is the structural diagram of the pulling device of the present invention.

[0062] Figure 8 It is Figure 7 the positional relationship diagram of the moving block and the locking block in

[0063] Figure 9 This is the front view of the transverse moving body of the present invention.

[0064] Figure 10 This is the top view of the transverse moving body of the present invention.

[0065] Figure 11 It is Figure 10 the side view of the vertical frame in

[0066] Figure 12 This is the top view of the overall structure of the present invention.

[0067] In the figure: 10, keel assembly; 20, main body frame; 21, connecting frame; 211, first fixed pulley; 212, second fixed pulley; 22, wind speed sensor; 23, wind direction sensor; 24, vertical plate; 241, longitudinal rotating shaft; 242, mounting frame; 243, vertical rotating shaft; 30, metal roof; 31, longitudinal positioning rib; 40, transverse member; 41, mounting groove; 42, vertical bottom plate; 43, horizontal top plate; 50, clamping member; 51, first fixing piece; 52, second fixing piece; 53, ear plate; 60, transverse moving body; 61, top frame; 611, vertical frame; 612, guiding wheel; 613, guiding wheel; 614, annular groove; 615, extension plate; 62, rolling assembly; 63, connecting head; 64, telescopic device; 65, roller; 66, horizontal wheel; 70, steel wire strand; 80, towing rope; 90, pulling device; 91, driving cylinder; 92, guide rail; 921, limiting groove; 93, first guiding wheel; 94, second guiding wheel; 95, moving block; 951, electromagnet; 96, locking block; 97, locking portion; 98, magnetic attracting portion. Detailed implementation manners

[0068] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0069] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0070] Embodiment 1

[0071] A large-span metal roof wind uplift resistance system includes a keel assembly 10, a metal roof 30, a transverse member 40, a clamping member 50, a transverse moving body 60, a steel strand 70, a towing rope 80, and a towing device 90.

[0072] The keel assembly 10 is installed on the top of the main frame 20, and the main frame 20 is vertically installed on a flat ground.

[0073] The metal roof 30 is installed on the keel assembly 10. A longitudinal positioning rib 31 is provided at the top of the metal roof 30. The metal roof 30 is installed by butt joint in a transverse paving manner. The longitudinal positioning rib 31 is the joint of the transverse paving and splicing of the metal roof 30. This joint is a traditional structure and will not be specifically described herein.

[0074] As Figure 6 shown, the transverse member 40 is located at the top of the longitudinal positioning rib 31 and an installation groove 41 is provided at the bottom. The installation groove 41 is inserted on the longitudinal positioning rib 31. The transverse member 40 includes a transverse top plate 43 and a vertical bottom plate 42. The transverse top plate 43 is fixedly installed on the top of the vertical bottom plate 42, and the positioning groove 41 is provided at the bottom of the vertical bottom plate 42. The transverse member 40 is horizontally arranged transversely. By adapting the positioning groove 41 and the longitudinal positioning rib 31, the transverse position of the transverse member 40 is restricted.

[0075] The clamping member 50 is installed on the longitudinal positioning rib 31 to fixedly connect the transverse member 40 and the longitudinal positioning rib 31. The clamping member 50 includes a first fixing piece 51 and a second fixing piece 52. The first fixing piece 51 and the second fixing piece 52 are respectively located on both sides of the longitudinal positioning rib 31. The first fixing piece 51 and the second fixing piece 52 are connected by bolts and fixed on the longitudinal positioning rib 31. Ear plates 53 are provided at the tops of the first fixing piece 51 and the second fixing piece 52, and the ear plates 53 are fixedly installed on the side of the transverse member 40. The first fixing piece 51 and the second fixing piece 52 are distributed on both sides of the longitudinal positioning rib 31, and are locked and fixed on the longitudinal positioning rib 31 by bolt connection, and are connected and fixed to the transverse member 40 through the ear plates 53 to restrict the longitudinal position of the transverse member 40.

[0076] The lateral moving body 60 is movably fitted on the lateral member 40. The lateral moving body 60 includes a top frame 61 and a rolling assembly 62. Connecting heads 63 are provided at both ends of the top frame 61. The rolling assembly 62 is installed below the top frame 61 and is movably installed on the transverse top plate 43. A compensation structure is installed on the top frame 61. The compensation structure includes telescopic devices 64 symmetrically installed on the top frame 61 and rollers 65 distributed on both sides of the corresponding telescopic devices 64. The opposite ends of the telescopic devices 64 are output ends and horizontal wheels 66 are installed at the ends. The horizontal wheels 66 are used to keep the steel wire ropes 70 in a certain tension. The telescopic device 64 is a motor embedded in the top frame 61, a lead screw installed at the output end of the motor, and a moving sleeve sleeved on the external thread of the lead screw. The moving sleeve is used to install the horizontal wheel 66. By moving the moving sleeve, the position of the horizontal wheel 66 is adjusted, so as to ensure that the steel wire ropes are always in a tensioned state, and the greater the tension force is closer to the end of the metal roof 30. It can be understood that the tension force is proportional to the lateral moving distance, and the proportional factor is greater than 1.

[0077] There are two groups of steel wire ropes 70, which are longitudinally symmetrically distributed on the lateral moving body 60. The two groups of steel wire ropes 70 are distributed in an X-shaped structure. The two ends of the steel wire ropes 70 are respectively fixed on the lateral two ends of the main body frame 20. A connecting frame 21 is installed at the lateral end of the main body frame 20. A first fixed pulley 211 and a second fixed pulley 212 are installed on the connecting frame 21. The first fixed pulley 211 is vertically installed in the middle of the top surface of the connecting frame 21 and is used for winding the traction rope 80. There are two groups of the second fixed pulleys 212, which are symmetrically distributed on both sides of the first fixed pulley 211 respectively. The second fixed pulleys 212 are used for winding the steel wire ropes 70. A wind speed sensor 22 and a wind direction sensor 23 are installed on the connecting frame 21. The wind speed sensor 22 is used to monitor the real-time wind speed, and the wind direction sensor 23 is used to monitor the wind direction in real time and transmit the signal to the control module. The control module outputs a signal to control the extension amount of the output end of the pulling device 90.

[0078] There are two groups of traction ropes 80, which are respectively installed at the lateral two ends of the lateral moving body 60, that is, the connecting head 63 is fixedly connected to the traction rope 80.

[0079] As Figure 7As shown, the pulling device 90 is installed at the transverse two ends of the main body frame 20. The output end of the pulling device 90 is connected to the towing rope 80 for pulling the transverse moving body 60. The pulling device 90 includes a driving cylinder 91, a guide rail 92, a first guide wheel 93 and a second guide wheel 94. Both the driving cylinder 91 and the guide rail 92 are vertically arranged on the side of the main body frame 20. The guide rail 92 is installed below the driving cylinder 91. A moving block 95 is installed on the piston rod of the driving cylinder 91. The moving block 95 is slidably engaged in the guide rail 92. The first guide wheel 93 and the second guide wheel 94 are respectively installed on the main body frame 20. The first guide wheel 93 is located directly below the first fixed pulley 211. The second guide wheel 94 is arranged at the top of the guide rail 92 to control the towing rope 80 in this section to be in a vertical state.

[0080] Embodiment 2

[0081] Based on the above embodiment, the following improvements are made: As Figure 4 、 5 shown, two groups of vertical plates 24 are installed on the connecting frame 21. Each group of vertical plates 24 has two. A longitudinal rotating shaft 241 is rotatably installed on each group of vertical plates 24. An installation frame 242 is installed on the longitudinal rotating shaft 241. Two vertical rotating shafts 243 are arranged on the installation frame 242. Each group of second fixed pulleys 212 has two. Each vertical rotating shaft 243 is respectively used to install the corresponding second fixed pulley 212. Since after the transverse moving body 60 is displaced, the shape of the steel strand 70 changes, resulting in an angular deviation in the parts on both sides of the transverse moving body 60, that is, the angle on the windward side gradually decreases and the angle on the leeward side gradually increases. Through this setting, the shape change of the steel strand 70 can be taken into account to prevent jamming problems during the operation stage. As Figure 10 、 11 shown, at the same time, guiding components are vertically installed at both ends of the top frame 61. The guiding component includes a vertical frame 611 and a guiding frame 612 rotatably installed circumferentially inside. An annular groove 614 is arranged on the side of the guiding frame 612. A rolling body is installed in the annular groove 614. The rolling body is installed at the top of the vertical frame 611. The guiding frame 612 is of an annular structure. Two groups of extension plates 615 are arranged inside the guiding frame 612. A horizontal part is arranged at the end of the extension plate 615. Two guiding wheels 613 are installed on the horizontal parts at the ends of the two groups of extension plates 615 to limit the steel strand 70, and the steel strand 70 is always located at the center of the guiding frame 612 and is also coplanar with the plane where the horizontal wheel 66 and the roller 65 are located. Through the circumferential rotation of the guiding wheel 613 and the guiding frame 612 together, relative rotation is realized, and the relative rotation is used to adapt to the angular change of the steel strand 70.

[0082] Embodiment 3

[0083] Based on the above embodiment, in order to release the acting force at the output end of the driving cylinder 91 during the side wind action, the following improvements are made: AsFigure 7 , 8 As shown in 8 , a locking block 96 is rotatably installed on the moving block 95, and a torsion spring is installed at the rotation node. One end of the locking block 96 is provided with a locking portion 97 and the other end is provided with a magnetic attraction portion 98. An electromagnet 951 is installed on the moving block 95, and the electromagnet 951 corresponds to the magnetic attraction portion 98 in position. A plurality of continuously arranged limiting grooves 921 are provided on one side of the guide rail 92, and the locking portion 97 and the limiting grooves 921 are selectively adapted.

[0084] In the above embodiment, as Figure 12 shown, a plurality of groups of transverse members 40 and the transverse moving bodies 60 thereon can be arranged at equal intervals along the metal roof 30, and adjacent transverse moving bodies 60 can be connected by connecting rods so that all the transverse moving bodies 60 move simultaneously.

[0085] A construction method for a large-span metal roof wind uplift resistance system includes the following:

[0086] Step 1, clamping the main frame 20

[0087] Level the ground, mark the installation sidelines of the main frame 20 on the leveled ground, and install the main frame 20 according to the installation sidelines.

[0088] Step 2, clamping the keel assembly 10

[0089] Install the keel assembly 10 on the top of the main frame 20 in batches by a hoisting vehicle between the main frames 20 to form a keel network.

[0090] Step 3, installing the metal roof 30;

[0091] Install the metal roof 30 on the top of the keel assembly 10 through connectors, and assemble adjacent metal roofs 30 through the longitudinal positioning ribs 31.

[0092] Step 4, installing the transverse member 40

[0093] Install the first fixing piece 51 and the second fixing piece 52 on both sides of the longitudinal positioning rib 31 at the top of the metal roof 30. Adjust the position of the clamping piece 50 according to the set installation position of the transverse member 40, and then lock and fix the first fixing piece 51 and the second fixing piece 52 with bolts. Install the first fixing piece 51 and the second fixing piece 52 on both sides of the transverse member 40 through the connection holes on the ear plate 53 to complete the installation of the transverse member 40, and ensure that the installed transverse member 40 is in a horizontal state.

[0094] Step 5, installing the transverse moving body 60

[0095] Install a rolling assembly 62 on the transverse roof plate 43 of the transverse member 40. The rolling assembly 62 is in rolling fit with the transverse roof plate 43. Install a traction rope 80 on the connecting heads 63 at both ends of the top frame 61. Install two steel stranded wires 70 on the top frame 61. Use the horizontal wheels 66 and the rollers 65 to limit the steel stranded wires 70. The steel stranded wires 70 are distributed in an X-shaped structure on the top frame 61.

[0096] Step 6, install the connecting frame 21

[0097] Install the connecting frame 21 on the main frame 20 at the transverse end of the metal roof 30. Install a first fixed pulley 211, a second fixed pulley 212 and a wind sensor on the connecting frame 21.

[0098] Both ends of the steel stranded wire 70 are respectively wound around the second fixed pulley 212 and installed on the main frame 20 at the transverse end of the metal roof 30.

[0099] Step 7, install the pulling device 90

[0100] Install a driving cylinder 91, a guide rail 92, a first guide wheel 93 and a second guide wheel 94 on the main frame 20 at the transverse end of the metal roof 30. A moving block 95 is connected to the end of the driving cylinder 91. A locking block 96 is installed on the moving block 95, and the locking block 96 and the limiting groove 921 of the locking groove 921 are selectively adapted.

[0101] The traction rope 80 is wound around the first fixed pulley 211, the first guide wheel 93, the second guide wheel 94 and connected to the moving block 95.

[0102] Step 8, system debugging

[0103] Move the transverse moving body 60 to the top center of the metal roof 30. Adjust the steel stranded wire 70 to be in a tensioned state by adjusting the telescopic device 64. The output ends of the driving cylinders 91 are all in a semi-extended state.

[0104] When there is a lateral crosswind, the wind speed sensor 22 monitors the wind speed at the transverse end of the metal roof 30 in real time, and the wind direction sensor 23 monitors the wind direction at the transverse end of the metal roof 30 in real time and uploads the signal to the control module. When the wind speed exceeds the set value, the control module outputs a signal. The output end of the driving cylinder 91 on the wind direction side extends outward to drive the locking block 96 to move downward along the guide rail 92. The electromagnet 951 on the moving block 95 on the other side is energized and adsorbs the magnetic attraction part 98 at the same time. The locking block 96 is separated from the limiting groove 921. The output end of the driving cylinder 91 retracts inward to drive the locking block 96 to move upward along the guide rail 92 by the same amount of displacement.

[0105] The transverse moving body 60 will move a set distance against the wind direction side, increasing the pre-compression force of the metal roof 30 on the wind direction side and ensuring the wind resistance performance on the wind direction side.

[0106] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept shall be covered within the protection scope of the present invention.

Claims

1. A wind uplift resistance system for a large-span metal roof, characterized in that, Including: A keel assembly (10), the keel assembly (10) is installed on the top of the main frame (20); A metal roof (30), the metal roof (30) is installed on the keel assembly (10), and a longitudinal positioning rib (31) is provided at the top of the metal roof (30); A transverse member (40), the transverse member (40) is located at the top of the longitudinal positioning rib (31) and an installation groove (41) is provided at the bottom, and the installation groove (41) is inserted on the longitudinal positioning rib (31); A clamping member (50), the clamping member (50) is installed on the longitudinal positioning rib (31) to fixedly connect the transverse member (40) and the longitudinal positioning rib (31); A transverse moving body (60), the transverse moving body (60) is movably fitted on the transverse member (40); Steel wire ropes (70), there are two groups of steel wire ropes (70), and they are longitudinally symmetrically distributed on the transverse moving body (60), the two groups of steel wire ropes (70) are distributed in an X-shaped structure, and both ends of the steel wire ropes (70) are respectively fixed at the transverse two ends of the main frame (20); Traction ropes (80), there are two groups of traction ropes (80), and the two groups are respectively installed at the transverse two ends of the transverse moving body (60); A pulling device (90), the pulling device (90) is installed at the transverse two ends of the main frame (20), and the output end of the pulling device (90) is connected to the traction rope (80) for pulling the transverse moving body (60).

2. The wind uplift resistance system for a large-span metal roof according to claim 1, wherein, A connecting frame (21) is installed at the transverse end of the main frame (20), a first fixed pulley (211) and a second fixed pulley (212) of the connecting frame (21), the first fixed pulley (211) is vertically installed in the middle of the top surface of the connecting frame (21) for winding the traction rope (80), there are two groups of the second fixed pulleys (212) which are symmetrically distributed on both sides of the first fixed pulley (211) respectively, and the second fixed pulleys (212) are used for winding the steel wire ropes (70); Among them, a wind speed sensor (22) and a wind direction sensor (23) are installed on the connecting frame (21), the wind speed sensor (22) is used for real-time monitoring of the real-time wind speed, the wind direction sensor (23) is used for real-time monitoring of the wind direction and sending signals to the control module, and the control module outputs signals to control the extension amount of the output end of the pulling device (90).

3. The wind uplift resistance system for a large-span metal roof according to claim 2, wherein Two groups of vertical plates (24) are installed on the connecting frame (21), and each group of vertical plates (24) has two; A longitudinal rotating shaft (241) is rotatably installed on each group of vertical plates (24), an installation frame (242) is installed on the longitudinal rotating shaft (241), two vertical rotating shafts (243) are provided on the installation frame (242), there are two of each group of the second fixed pulleys (212), and each vertical rotating shaft (243) is respectively used for installing the corresponding second fixed pulley (212).

4. A large-span metal roof wind uplift resistance system according to claim 3, characterized in that, The clamping member (50) includes a first fixing piece (51) and a second fixing piece (52), the first fixing piece (51) and the second fixing piece (52) are respectively located on both sides of the longitudinal positioning rib (31), and the first fixing piece (51) and the second fixing piece (52) are connected by bolts and fixed on the longitudinal positioning rib (31); Lugs (53) are provided at the tops of the first fixing piece (51) and the second fixing piece (52), and the lugs (53) are fixedly installed on the side of the transverse member (40).

5. The wind uplift resistance system for a large-span metal roof according to claim 4, characterized in that, The transverse member (40) includes a transverse top plate (43) and a vertical bottom plate (42), and the transverse top plate (43) is fixedly installed on the top of the vertical bottom plate (42); The transverse moving body (60) includes a top frame (61) and a rolling assembly (62). Connecting heads (63) are provided at both ends of the top frame (61), and the connecting heads (63) are fixedly connected to the traction ropes (80). The rolling assembly (62) is installed below the top frame (61), and the rolling assembly (62) is movably installed on the transverse top plate (43).

6. The wind uplift resistance system for a large-span metal roof according to claim 5, characterized in that, A compensation structure is installed on the top frame (61). The compensation structure includes telescopic devices (64) symmetrically installed on the top frame (61) and rollers (65) distributed on both sides of the corresponding telescopic devices (64). The opposite ends of the telescopic devices (64) are output ends and horizontal wheels (66) are installed at the ends. The horizontal wheels (66) are used to keep the steel strand (70) in a certain tension state.

7. A large-span metal roof wind uplift resistance system according to claim 6, characterized in that, The pulling device (90) includes a driving cylinder (91), a guide rail (92), a first guide wheel (93) and a second guide wheel (94); The driving cylinder (91) and the guide rail (92) are both vertically arranged on the side of the main body frame (20). The guide rail (92) is installed below the driving cylinder (91). A moving block (95) is installed on the piston rod of the driving cylinder (91), and the moving block (95) is slidably fitted in the guide rail (92); The first guide wheel (93) and the second guide wheel (94) are respectively installed on the main body frame (20). The first guide wheel (93) is directly below the first fixed pulley (211), and the second guide wheel (94) is arranged at the top of the guide rail (92) to control the traction rope (80) in this section to be in a vertical state.

8. A large-span metal roof wind uplift resistance system according to claim 7, characterized in that, A locking block (96) is rotatably installed on the moving block (95), and a torsion spring is installed at the rotation node. A locking portion (97) is provided at one end of the locking block (96), and a magnetic attracting portion (98) is provided at the other end. An electromagnet (951) is installed on the moving block (95), and the electromagnet (951) corresponds to the magnetic attracting portion (98) in position; A number of continuously arranged limiting grooves (921) are provided on one side of the guide rail (92), and the locking portion (97) is selectively adapted to the limiting grooves (921).

9. The construction method of a large-span metal roof wind uplift resistance system according to claim 8, characterized in that It includes the following: Step 1, clamping the main body frame (20) Level the ground, mark the installation border line of the main body frame (20) on the leveled ground, and install the main body frame (20) according to the installation border line; Step 2, clamping the keel assembly (10) Use a hoisting vehicle to install the keel assembly (10) in batches on the top of the main body frame (20) between the main body frames (20) to form a keel network; Step 3, installing the metal roof (30); Install the metal roof (30) on the top of the keel assembly (10) through connectors, and adjacent metal roofs (30) are assembled through longitudinal positioning ribs (31); Step 4, installing the transverse member (40) Install fixing piece one (51) and fixing piece two (52) on both sides of the longitudinal positioning rib (31) at the top of the metal roof (30). Adjust the position of the clamping piece (50) according to the installation position of the set cross member (40), and then lock and fix fixing piece one (51) and fixing piece two (52) with bolts. Install fixing piece one (51) and fixing piece two (52) on both sides of the cross member (40) through the connection holes on the ear plate (53) to complete the installation of the cross member (40) and ensure that the installed cross member (40) is in a horizontal state; Step 5, install the lateral moving body (60) Install a rolling component (62) on the transverse top plate (43) of the cross member (40). The rolling component (62) and the transverse top plate (43) are in rolling cooperation. Install a traction rope (80) on the connection heads (63) at both ends of the top frame (61). Install two steel wire ropes (70) on the top frame (61). Use the horizontal wheel (66) and the roller (65) to limit the steel wire ropes (70). The steel wire ropes (70) are distributed in an X-shaped structure on the top frame (61); Step 6, install the connecting frame (21) Install the connecting frame (21) on the main frame (20) at the lateral end of the metal roof (30). Install a first fixed pulley (211), a second fixed pulley (212) and a wind speed sensor on the connecting frame (21); Both ends of the steel wire rope (70) are respectively wound around the second fixed pulley (212) and installed on the main frame (20) at the lateral end of the metal roof (30); Step 7, install the pulling device (90) Install a driving cylinder (91), a guide rail (92), a first guide wheel (93) and a second guide wheel (94) on the main frame (20) at the lateral end of the metal roof (30). A moving block (95) is connected to the end of the driving cylinder (91). A locking block (96) is installed on the moving block (95), and the locking block (96) and the limiting groove (921) of the locking groove (921) are selectively adapted; The traction rope (80) is wound around the first fixed pulley (211), the first guide wheel (93), the second guide wheel (94) and is connected to the moving block (95); Step 8, system debugging Move the lateral moving body (60) to the center of the top of the metal roof (30). Adjust the steel wire rope (70) to be in a tensioned state by adjusting the telescopic device (64). The output ends of the driving cylinders (91) are all in a semi-extended state; When there is a lateral crosswind, the wind speed sensor (22) monitors the wind speed at the lateral end of the metal roof (30) in real time, and the wind direction sensor (23) monitors the wind direction at the lateral end of the metal roof (30) in real time and uploads the signal to the control module. When the wind speed exceeds the set value, the control module outputs a signal. The output end of the driving cylinder (91) on the wind direction side extends out to drive the locking block (96) to move downward along the guide rail (92). The electromagnet (951) on the other moving block (95) is energized and adsorbs the magnetic attracting part (98) at the same time. The locking block (96) is separated from the limiting groove (921), and the output end of the driving cylinder (91) retracts to drive the locking block (96) to move upward along the guide rail (92) by the same amount of displacement; The lateral moving body (60) will move a set distance against the wind direction to increase the pre-compression force of the metal roof (30) on the windward side, ensuring the wind uplift resistance performance on the windward side.

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