Light steel keel composite board, fabricated building and construction method

Abstract

The application relates to a light steel keel composite board, a fabricated building and a building method, which are applied in the field of fabricated buildings and comprise a light steel keel frame, the light steel keel frame comprising horizontal keels and vertical keels, the horizontal keels and the vertical keels being connected through fasteners, a filling space being formed between the horizontal keels and the vertical keels, a heat preservation layer being arranged in the filling space, gaps being left between the heat preservation layer and the horizontal keels and the vertical keels to form curing spaces, and curing layers formed after cement mortar in the curing spaces is solidified. The application has the effect that shear forces received by the connection between the light steel keel frame and the fasteners are dispersed to the horizontal keels and the vertical keels, stress concentration at the connection between the light steel keel frame and the fasteners is reduced, the strength of the light steel keel composite board is improved, and the overall structural strength of the fabricated building using the light steel keel composite board is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of prefabricated buildings, in particular to a light steel keel composite board, a prefabricated building and a construction method. BACKGROUND

[0002] At present, the wall of buildings in China is mainly composed of hollow bricks and aerated concrete blocks, which is a brick-concrete structure wall. However, it has the disadvantages of slow construction speed, more on-site wet work, complicated process, low work efficiency, and poor heat insulation effect. As one of the important forms of prefabricated buildings, light steel structure buildings have the advantages of various appearances, high strength, fast assembly speed, short construction period, and good heat insulation effect compared with traditional brick-concrete structure buildings.

[0003] In related technologies, the wall of a light steel structure building is composed of a light steel structure composite board, which includes a frame built using light steel keels. The base material of the light steel keel is a galvanized or aluminum-zinc-coated steel strip, which is formed into a cold-formed thin-walled steel (i.e., a keel) after rolling. The keels are connected to form a light steel keel frame through fasteners, and the light steel keel frame is filled with rock wool for heat insulation.

[0004] However, in related technologies, the keels are only connected by fasteners. Since the connection is a point connection and stress is concentrated, the keels and fasteners will bear a large amount of shear force, which easily causes stress to concentrate at the connection between the keel and the fastener, accelerating the damage to the connection. SUMMARY

[0005] In order to improve the problem that the connection between the keel and the fastener is a point connection, stress is concentrated at the connection between the keel and the fastener, and the connection is damaged quickly, the present application provides a light steel keel composite board, a prefabricated building and a construction method.

[0006] In a first aspect, the present application provides a light steel keel composite board, which adopts the following technical solution:

[0007] A light steel keel composite board includes a light steel keel frame, which includes horizontal keels and vertical keels. The horizontal keels and the vertical keels are connected by fasteners. A filling space is formed between the horizontal keels and the vertical keels. A thermal insulation layer is arranged in the filling space. A gap is left between the thermal insulation layer and the horizontal keels and the vertical keels to form a curing space. A curing layer is arranged in the curing space.

[0008] By adopting the technical scheme, the horizontal keel and the vertical keel are connected to form a light steel keel frame through fasteners, a filling space is formed in the light steel keel frame, and a thermal insulation layer is arranged in the filling space, so that the light steel keel composite board has a heat insulation function. A curing layer is arranged in the curing space, and the curing layer connects the fasteners, the horizontal keel and the vertical keel to form a continuous whole, so that the shear force acting on the connecting position of the fasteners, the horizontal keel and the vertical keel is dispersed to the whole formed by the curing layer and the light steel keel frame, thereby protecting the connecting position of the horizontal keel, the vertical keel and the fasteners.

[0009] Optionally, a sound insulation felt is arranged between the curing layer and the thermal insulation layer, a plurality of fixing screws are arranged in the filling space, the fixing screws penetrate the thermal insulation layer and the sound insulation felt, and a fixing nut is threadedly connected to a portion of the fixing screw extending out of the sound insulation felt.

[0010] By adopting the technical scheme, the sound insulation felt is arranged and fixed on the thermal insulation layer through the fixing screw and the fixing nut, so that the sound insulation felt is prevented from being displaced when the cement mortar is poured into the curing space, thereby affecting the sound insulation effect of the light steel keel composite board.

[0011] Optionally, a prestressed plate is arranged in the filling space, and the prestressed plate is connected to the vertical keel through an adjusting mechanism, and the adjusting mechanism is used to stretch the prestressed plate.

[0012] By adopting the technical scheme, the prestressed plate is arranged in the filling space and is embedded in the thermal insulation layer, thereby enhancing the structural strength of the thermal insulation layer. The adjusting mechanism is arranged to stretch the prestressed plate, so that the prestressed plate is prestressed, and the thermal insulation layer has stronger bending resistance and load bearing capacity, thereby improving the structural strength of the light steel keel composite board.

[0013] Optionally, the adjusting mechanism comprises a first adjusting assembly, a second adjusting assembly, a bundling assembly and a connecting cable, the first adjusting assembly is arranged at one end of the prestressed plate, the second adjusting assembly is arranged at the other end of the prestressed plate, the bundling assembly is arranged on the horizontal keel, the connecting cable is sequentially wound around the first adjusting assembly and the second adjusting assembly and is fixed to the bundling assembly, and the bundling assembly is used to bundle the connecting cable.

[0014] By adopting the technical scheme, the bundling assembly bundles the connecting cable, the connecting cable sequentially wound around the first adjusting assembly and the second adjusting assembly is pulled, and tension is applied to both ends of the prestressed plate, so that the prestressed plate is stretched until abutting against the vertical keel, thereby enhancing the load bearing capacity of the light steel keel frame.

[0015] Optionally, the first adjusting assembly comprises three first steering members, one of which is arranged at one end of the prestressed plate, and the other two are arranged on the vertical keel; the second adjusting assembly comprises a pair of second steering members, one of which is arranged at the other end of the prestressed plate, and the other is arranged on the vertical keel;

[0016] The collection assembly comprises a collection gear, a collection reel, a collection rack, a cylinder and a collection slide rail, the collection slide rail is bolted on the cross keel, the collection rack is integrally formed with a sliding block, the sliding block is slidingly installed on the collection slide rail, the cylinder is installed on the cross keel, the piston rod of the cylinder is connected to one end of the collection rack through a connecting assembly, the collection reel is coaxially connected to the collection gear, the wheel shaft of the collection gear is fixed on the cross keel, and the collection gear is engaged with the collection rack.

[0017] The connecting cable is stretched towards the vertical keel after passing through the three first steering members in sequence, and the other end of the prestressed plate is stretched towards the other vertical keel after passing through the two second steering members in sequence.

[0018] By adopting the above technical scheme, when the connecting cable is collected, the cylinder pushes the collection rack, the collection rack drives the collection gear engaged therewith to rotate, the collection reel coaxially fixed on the collection gear winds up and collects the connecting cable, so that the connecting cable is continuously shortened. The connecting cable is wound on the first steering member and the second steering member, and when the connecting cable is shortened, the distance between the first steering member and the second steering member is also shortened, so that the prestressed plate is stretched to achieve the purpose of applying prestress to the prestressed plate.

[0019] Optionally, the first steering member comprises a first screw rod, a first sleeve and a first limiting cover plate, the first sleeve is sleeved on the first screw rod, the outer wall of the first sleeve is circumferentially provided with a containing groove for winding the connecting cable, the first limiting cover plate is threadedly connected on the first screw rod, the first screw rod at the vertical keel is fixed with the vertical keel, and the first screw rod at the prestressed plate is fixed with the prestressed plate.

[0020] By adopting the above technical scheme, the first screw rod is fixed on the vertical keel and the prestressed plate, and the first sleeve is sleeved on the first screw rod, which has better structural strength, so that the first steering member is not easy to deform when subjected to pressure from the connecting cable. In addition, the containing groove limits the connecting cable, so that the connecting cable is not easy to come off the first sleeve. The first limiting cover plate limits the first sleeve, so that the first sleeve is not easy to come off the first screw rod.

[0021] Optionally, the connecting assembly comprises a connecting plate arranged on the converging rack, and a piston plate arranged on a piston rod of the cylinder, and the connecting plate is bolted with the piston plate.

[0022] By adopting the above technical scheme, the connecting plate and the piston plate are bolted, and the detachable connection between the cylinder and the converging rack is completed, which facilitates the disassembly and recovery of the cylinder by the operator after the connection cable is converged in place.

[0023] Optionally, a limiting assembly is arranged on the cross joist, and the limiting assembly comprises a ratchet wheel, a pawl and a return spring, the ratchet wheel is coaxially fixed on the converging gear, the pawl is rotatably arranged on the cross joist, the ratchet wheel is engaged with the pawl, and one end of the return spring is fixed on the cross joist and the other end is fixed with the pawl.

[0024] By adopting the above technical scheme, after the connection cable is converged in place, the reverse rotation of the pawl on the ratchet wheel plays a limiting role, so that the converging gear coaxially fixed with the ratchet wheel can only rotate forward and cannot rotate reversely, thereby limiting the connection cable, and facilitating the recovery of the converging rack, the cylinder, the sliding block and the converging slide rail by the operator for the next use of the prestressed plate.

[0025] In a second aspect, the application provides a fabricated building using light steel keel composite board, which adopts the following technical scheme:

[0026] Optionally, the wall body is made of light steel keel composite board, the wall body is coated with a restraint net, a decorative plate is arranged on the side of the restraint net away from the wall body, a filling area is formed between the decorative plate and the restraint net, and the filling area is filled with an adhesive material.

[0027] By adopting the above technical scheme, the restraint net is coated on the surface of the wall body, and the decorative plate is arranged on the side of the reinforcing net away from the wall body to beautify the building. The filling area formed between the decorative plate and the wall body is filled with the adhesive material, which is solidified and shaped. On the one hand, the adhesive material plays a role of strengthening and protecting the light steel keel frame; on the other hand, the adhesive material, the light steel keel frame, the fastener and the restraint net are integrated to form a continuous connecting layer, which also plays a role of adhesive to bond the decorative plate and the light steel keel composite board together, thereby reducing the possibility of the decorative plate falling off.

[0028] In a third aspect, the application further provides a construction method of a fabricated building, which adopts the following technical scheme: comprising the following steps:

[0029] Step S1: manufacturing light steel keel composite boards of corresponding specifications according to a design scheme, and then transporting the light steel keel composite boards to a construction site, and connecting adjacent light steel keel composite boards into one body by using self-tapping screws to form an outline of the fabricated building.

[0030] Step S2: embedding or installing various pipelines required by the fabricated building in the thermal insulation layer of the light steel keel composite board on site;

[0031] Step S3: installing the binding net on the outer surface of the fabricated building, and fixing the binding net on the light steel keel composite board by using self-tapping screws, so that the binding net is wrapped and fixed on the surface of the fabricated building, and the surface of the fabricated building forms a continuous whole through the binding net;

[0032] Step S4: spraying or smearing the cement mortar on the binding net, and filling the gap between the light steel keel composite board and the binding net through the binding net, so that the connecting part of the horizontal keel and the vertical keel, the fastener and the binding net are all wrapped in the cement mortar to form a continuous connecting layer together;

[0033] Step S5: installing the decorative plate on the connecting layer by using self-tapping screws, and pouring the adhesive material between the decorative plate and the connecting layer, so that the decorative plate forms a whole with the light steel keel composite board through the adhesion of the self-tapping screws and the adhesive material after the adhesive material solidifies.

[0034] Through the above technical scheme, the adhesive material is filled between the decorative plate and the wall, and after the adhesive material solidifies, on the one hand, it plays a role in enhancing the strength of the light steel keel frame structure; on the other hand, the adhesive material, the light steel keel frame, the fastener and the binding net are integrated to form a continuous connecting layer, which also plays a role of adhesive, and the decorative plate and the light steel keel composite board are bonded together, reducing the situation of the decorative plate falling off.

[0035] In summary, the present application has at least one of the following beneficial technical effects:

[0036] 1. The thermal insulation layer arranged in the filling space makes the light steel keel composite board have the heat insulation function. The curing layer arranged in the curing space connects the fastener, the horizontal keel and the vertical keel to form a continuous whole, i.e. a connecting layer, so that the shear force on the connecting part of the fastener, the horizontal keel and the vertical keel is dispersed to the connecting layer formed by the curing layer and the light steel keel frame, thereby protecting the connecting part of the horizontal keel, the vertical keel and the fastener;

[0037] 2. When the connecting cable is bundled, the air cylinder drives the bundling rack, the bundling rack drives the bundling gear meshing therewith to rotate, the bundling spool coaxially fixed on the bundling gear winds up and bundles the connecting cable, so that the connecting cable is shortened continuously. The connecting cable is wound on the first turning piece and the second turning piece, and when the connecting cable is shortened, the first turning piece and the second turning piece are pulled to approach each other, so that the prestressed plate is stretched to achieve the purpose of applying prestress to the prestressed plate;

[0038] 3, after the connection cable is collected in place, the reverse rotation of the pawl to the ratchet plays a limiting role, so that the collection gear fixed coaxially with the ratchet can only rotate forward, and cannot rotate reversely, thereby limiting the connection cable, facilitating the operator to recover the collection rack, cylinder, sliding block and collection slide rail. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a schematic diagram of a light steel keel composite board in the embodiment one of the application.

[0040] Figure 2 is a sectional view of a fabricated building wall body applying the light steel keel composite board in the embodiment one of the application.

[0041] Figure 3 is a schematic diagram of a light steel keel frame, adjusting mechanism and limiting component in the embodiment two of the application.

[0042] Figure 4 is a schematic diagram of a light steel keel composite board in the embodiment two of the application.

[0043] Figure 5 is a schematic diagram of a first turning piece in the embodiment two of the application.

[0044] Figure 6 is a schematic diagram of a collection component, connecting component and limiting component in the embodiment two of the application.

[0045] Figure 7 is a sectional view of a fabricated building wall body applying the light steel keel composite board in the embodiment two of the application.

[0046] Fig. 1, light steel keel frame; 11, cross keel; 12, vertical keel; 13, fastener; 2, filling space; 3, thermal insulation layer; 4, curing space; 5, curing layer; 6, soundproof felt; 7, fixed screw; 8, fixed nut; 9, adjusting mechanism; 91, first adjusting component; 911, first turning piece; 9111, first screw; 9112, first sleeve; 91121, accommodating groove; 9113, first limiting cover plate; 92, second adjusting component; 921, second turning piece; 93, collection component; 931, collection gear; 932, collection reel; 933, collection rack; 934, collection slide rail; 935, sliding block; 936, cylinder; 94, connecting cable; 10, prestressed plate; 14, connecting component; 141, connecting plate; 142, piston plate; 15, limiting component; 151, ratchet; 152, pawl; 153, return spring; 16, locking bolt; 17, wall body; 18, reinforcing net; 19, decorative layer; 20, filling area; 21, adhesive material; 22, binding net; 23, connecting layer; 24, decorative plate. DETAILED DESCRIPTION

[0047] The following will further elaborate on this application in conjunction with the attached Figures 1-7 drawings.

[0048] Example 1:

[0049] This application example discloses a light steel keel composite board.

[0050] Referring to Figure 1 , a light steel keel composite board includes a light steel keel frame 1 for constructing and supporting the light steel keel composite board. In this application example, a set of light steel keel frames 1 includes a pair of horizontal keels 11 and four vertical keels 12. The four vertical keels 12 are fixed between the pair of horizontal keels 11 through fasteners 13, forming the above-mentioned light steel keel frame 1 with a "mu" shaped cross-section. The horizontal keel 11 is made of square steel with a galvanized surface, the vertical keel 12 is made of channel steel with a galvanized surface, and the fastener 13 is a self-tapping screw commonly used in light steel structure buildings.

[0051] Referring to Figure 1 , a filling space ② is formed by enclosing between the horizontal keel 11 and the vertical keel 12. Since both the horizontal keel 11 and the vertical keel 12 are made of steel and have strong heat conduction performance, a heat insulation layer 3 is provided in the filling space 2. In this application example, the heat insulation layer 3 is formed by pouring perlite heat insulation mortar into the filling space 2 and then letting it solidify.

[0052] Compared with the method of directly filling rock wool in the light steel keel frame 1 as a heat insulation layer mentioned in the related technology, when the rock wool is filled in the light steel keel frame 1, there is no connection structure between the rock wool and the light steel keel frame 1, which is prone to sagging, causing the horizontal keel 11 and the vertical keel 12 to become hollow and lose the heat insulation and sound insulation functions. However, when using perlite heat insulation mortar as the main material of the heat insulation layer 3, the perlite heat insulation mortar solidifies together with the light steel keel frame 1 after solidification, forming a whole. Therefore, the solidified heat insulation layer 3 has the advantages of stable structure and not being prone to becoming hollow.

[0053] Referring to Figure 1 , before pouring the heat insulation layer 3, a pair of foam boards are placed in the filling space 2. The foam boards are placed in contact with the horizontal keel 11, and then perlite heat insulation mortar is poured into the filling space 2 to form the heat insulation layer 3. After the heat insulation layer 3 solidifies, the foam boards in the filling space 2 are taken out, and a curing space 4 is formed between the horizontal keel 11, the vertical keel 12 and the heat insulation layer 3. Then, cement mortar is poured into the curing space 4. After the cement mortar solidifies, a curing layer 5 is formed, and the connection parts of the horizontal keel 11, the vertical keel 12 and the fastener 13 are filled with the cement mortar and fixed in the curing layer 5.

[0054] The setting solidification layer 5 plays a role of protecting and enhancing the connection stability of the connection between the cross keel 11 and the vertical keel 12, and the setting solidification layer 5 forms a continuous protective shell to protect the light steel keel frame 1 and enhance the structural strength of the light steel keel frame 1.

[0055] The implementation principle of the light steel keel composite board in the embodiment of the application is that the cement mortar is filled in the solidification space 4, the cement mortar is solidified to form the setting solidification layer 5, the cement mortar connects the fastener 13, the cross keel 11 and the vertical keel 12 to form a continuous protective shell, so that the shear force received by the connection between the fastener 13 and the cross keel 11 and the vertical keel 12 is dispersed to the entire setting solidification layer 5 and the protective shell formed by the cross keel 11 and the vertical keel 12, thereby playing a role of protecting the connection between the cross keel 11, the vertical keel 12 and the fastener 13.

[0056] The embodiment of the application further discloses a fabricated building using the light steel keel composite board.

[0057] With reference to Figure 2 The fabricated building using the light steel keel composite board comprises a wall 17 made of the light steel keel composite board, and a binding net 22 is installed on one or two surfaces of the wall 17, the binding nets 22 are connected into one body and cover the surface of the entire building. Then, cement mortar is sprayed or daubed on the binding net 22, and then a decorative plate 24 is installed or made on the steel net; or the decorative plate 24 is first installed on the binding net 22, and then cement mortar is poured between the decorative plate 24 and the binding net 22 and the wall 17; or the cement mortar is first filled in the gap on the wall 17, and then the decorative plate 24 is installed by using self-tapping screws, and finally the cement mortar is poured between the decorative plate 24 and the wall 17.

[0058] In the embodiment of the application, the cement mortar is solidified to form a connecting layer 23, which not only has a role of enhancing the structural strength of the light steel keel composite board, but also is solidified into one body with the cross keel 11, the vertical keel 12, the self-tapping screws and the binding net 22 to form a continuous connecting layer 23, thereby playing a role of an adhesive.

[0059] With reference to Figure 2 In addition, the decorative plate 24 and the light steel keel composite board are bonded to form a whole and continuous protective shell layer, thereby effectively reducing the situation that the decorative plate 24 falls off. In the embodiment of the application, the decorative plate 24 is a common gypsum board on the market.

[0060] The implementation principle of the embodiment of the application is that the heat preservation layer 3 is arranged in the filling space 2, so that the light steel keel composite board has the heat insulation function. The curing layer 5 is arranged in the curing space 4, the curing layer 5 connects the fastener 13, the horizontal keel 11 and the vertical keel 12 to form a continuous protective shell, so that the shear force at the connection between the fastener 13 and the horizontal keel 11 and the vertical keel 12 is dispersed to the protective shell formed by the curing layer 5 and the horizontal keel 11, and the connection between the horizontal keel 11, the vertical keel 12 and the fastener 13 is protected.

[0061] In addition, the binding net 22 is arranged on one or two surfaces of the wall 17 made of the light steel keel composite board, the binding net 22 is connected together when the walls 17 are spliced, so that the binding net 22 covers the surface of the whole building, and then the decorative plate 24 is arranged on the surface of the building, and the cement mortar is filled between the decorative plate 24 and the wall 17, and the cement mortar forms the connecting layer 23 after solidification, so that the structural strength of the light steel keel composite board is further enhanced, the decorative plate 24 and the light steel keel composite board are bonded together, and the possibility of falling of the decorative plate 24 is effectively reduced.

[0062] The embodiment of the application also discloses a building construction method of the fabricated building.

[0063] The building construction method of the fabricated building comprises the following steps.

[0064] Step S1: light steel keel composite boards of corresponding specifications are manufactured according to a design scheme of the fabricated building, the light steel keel composite boards are transported to a construction site, adjacent light steel keel composite boards are connected together by using self-tapping screws, and a hole for installing a door and a window is reserved, so that the outline of the fabricated building is formed;

[0065] Step S2: various line pipes required by the fabricated building are embedded in the heat preservation layer 3 of the light steel keel composite board, or various pipelines required by the fabricated building are installed at the construction site;

[0066] Step S3: the binding net 22 is arranged on the outer surface of the wall 17 of the fabricated building, the binding net 22 is fixed on the light steel keel composite board by using self-tapping screws, the connection of adjacent binding nets 22 is preferentially arranged at the light steel keel frame 1, and the self-tapping screws are used to fix the light steel keel frame 1, so that the binding net 22 is covered and fixed on the surface of the wall 17 of the fabricated building, the surface of the fabricated building forms a continuous whole through the binding net 22, and the overall structural strength of the fabricated building is improved;

[0067] Step S4: Spraying or smearing cement mortar on the binding net 22 by artificial or mechanical method, the cement mortar fills the gap between the light steel keel composite board and the binding net 22 through the binding net 22, and the connecting part of the horizontal keel 11 and the vertical keel 12, the fastener 13 and the binding net 22 are all wrapped in the cement mortar to form a continuous connecting layer 23, which not only protects and enhances the light steel keel frame 1 and the binding net 22, but also reduces the situation of the connecting layer 23 falling off and cracking;

[0068] Step S5: The decorative plate 24 can be installed on the connecting layer 23 by using self-tapping screws, the decorative plate 24 is fixed on the light steel keel frame 1, and then the adhesive material 21 is poured between the decorative plate 24 and the connecting layer 23. In the embodiment of the application, the adhesive material 21 is cement mortar. After the adhesive material 21 solidifies, the decorative plate 24 is integrally formed with the light steel keel composite board through the adhesion of the self-tapping screws and the adhesive material 21, which not only has the advantages of high strength and light weight, but also has large rigidity and is not easy to crack. After the door and window are installed, the required fabricated building is obtained.

[0069] Embodiment two:

[0070] The embodiment of the application discloses a light steel keel composite board, which is different from the light steel keel composite board in the above-mentioned embodiment one in that:

[0071] Referring to Figure 3 and Figure 4 When the heat preservation layer 3 is poured, a plurality of fixed screws 7 are placed in the filling space 2, and after the heat preservation layer 3 solidifies, the fixed screws 7 are embedded in the heat preservation layer 3. Then, the sound insulation felt 6 is installed in the solidification space 4 to improve the sound insulation capacity of the light steel keel composite board.

[0072] Specifically, the sound insulation felt 6 is attached to the heat preservation layer 3, and the part of the fixed screw 7 extending out of the heat preservation layer 3 is threadedly connected with a fixed nut 8 after penetrating through the sound insulation felt 6. The fixed nut 8 tightly abuts the sound insulation felt 6 against the surface of the heat preservation layer 3, and plays a fixing role on the heat preservation layer 3, so that the sound insulation felt 6 installed on the surface of the heat preservation layer 3 is not easy to displace in the process of pouring cement mortar to form the solidification layer 5, so as to avoid affecting the sound insulation effect.

[0073] Referring to Figure 3 and Figure 4 To further enhance the pressure bearing capacity of the light steel keel composite board, a plurality of prestressed plates 10 are arranged in the filling space 2, the prestressed plates 10 are connected with the vertical keel 12 through the adjusting mechanism 9, and the adjusting mechanism 9 is used to stretch the prestressed plates 10 to apply prestress to the prestressed plates 10. After the heat preservation layer 3 and the solidification layer 5 are solidified and formed, the adjusting mechanism 9 is removed, and the prestressed plates 10 are embedded in the heat preservation layer 3, thereby enhancing the structural strength of the light steel keel composite board and improving the bending resistance and load bearing capacity of the light steel keel composite board.

[0074] In the embodiment of the present application, the prestressed plate 10 is cut from an H-shaped steel, and a pair of prestressed plates 10 are arranged in the interval between any two adjacent vertical keels 12, and the prestressed plates 10 are arranged alternately. In the embodiment of the present application, one of the prestressed plates 10 is taken as an example.

[0075] With reference to Figure 3 , the adjusting mechanism 9 comprises a first adjusting assembly 91, a second adjusting assembly 92 and a connecting cable 94, and the connecting cable 94 is wound between the first adjusting assembly 91 and the second adjusting assembly 92.

[0076] Specifically, the first adjusting assembly 91 comprises three first diverters 911, one of which is installed at one end of the prestressed plate 10, and the remaining two first diverters 911 are installed on the vertical keel 12; the second adjusting assembly 92 comprises a pair of second diverters 921, one of which is installed at the other end of the prestressed plate 10, and the remaining second diverter 921 is installed on the vertical keel 12 at the other end of the prestressed plate 10.

[0077] With reference to Figure 3 , one end of the connecting cable 94 is sleeved and fixed on one of the first diverters 911 located at the vertical keel 12, and then the connecting cable 94 is sequentially wound around the remaining two first diverters 911 and the pair of second diverters 921 located at the other end of the prestressed plate 10. After a pulling force is applied to the other end of the connecting cable 94, the prestressed plate 10 is stretched, that is, the prestressed plate 10 is prestressed.

[0078] The adjusting mechanism 9 with such a structure, the first adjusting assembly 91 and the second adjusting assembly 92 together constitute a "pulley block", the first diverter 911 and the second diverter 921 located on the prestressed plate 10 act as "moving pulleys", and the first diverter 911 and the second diverter 921 located on the vertical keel 12 act as "fixed pulleys", so that the operator can use smaller force to stretch the prestressed plate 10.

[0079] Further, in the actual operation process, the operator can adjust the number of first diverters 911 in the first adjusting assembly 91 and the number of second diverters 921 in the second adjusting assembly 92 according to the actual situation of the construction site, and change the winding mode of the connecting cable 94, so as to achieve the purpose of saving labor.

[0080] With reference to Figure 3 and Figure 5 , in the embodiment of the present application, the second diverter 921 is the same in structure as the first diverter 911, only the installation position is different, so the present application takes the first diverter 911 as an example for structural introduction.

[0081] The first steering piece 911 comprises a first screw rod 9111, a first sleeve 9112 and a first limiting cover plate 9113. The first screw rod 9111 located at the prestressed plate 10 is integrally formed on the prestressed plate 10, and the first screw rod 9111 located at the vertical keel 12 is integrally formed on the vertical keel 12. The first sleeve 9112 is sleeved on the first screw rod 9111, and a containing groove 91121 for winding the connecting cable 94 is arranged on the side wall of the first sleeve 9112 in the circumferential direction. The part of the first screw rod 9111 extending out of the first sleeve 9112 is threadedly connected with the first limiting cover plate 9113, so as to limit the first sleeve 9112 between the first limiting cover plate 9113 and the prestressed plate 10. After the thermal insulation layer 3 is solidified and formed, the operator only needs to unscrew the first limiting cover plate 9113 to recycle the first sleeve 9112 by adopting the first steering piece 911.

[0082] In the embodiment of the application, the first screw rod 9111, the first sleeve 9112 and the first limiting cover plate 9113 are all made of steel material, and are not easy to deform when a large pressure is borne.

[0083] With reference to Figure 3 and Figure 6 In order to facilitate the operator to pull the connecting cable 94, the adjusting mechanism 9 further comprises a collection assembly 93. The collection assembly 93 comprises a collection gear 931 and a collection rack 933 installed on the horizontal keel 11. The collection gear 931 is engaged with the collection rack 933. The collection gear 931 is coaxially provided with a collection reel 932. One end of the connecting cable 94 away from the first steering piece 911 is fixed on and wound around the collection reel 932. With the movement of the collection rack 933, the collection gear 931 rotates to drive the collection reel 932 to rotate, so as to collect the connecting cable 94 and stretch the prestressed plate 10.

[0084] The collection rack 933 is provided with a collection slide rail 934. The horizontal keel 11 is provided with a gas cylinder 936 at one end of the collection rack 933. The piston rod of the gas cylinder 936 is connected with the collection rack 933 through a connecting assembly 14. The connecting assembly 14 comprises a connecting plate 141 integrally formed on the collection rack 933 and a piston plate 142 integrally formed on the piston rod of the gas cylinder 936. The connecting plate 141 and the piston plate 142 are bolted.

[0085] Specifically, the collection slide rail 934 is bolted on the horizontal keel 11. The bottom of the collection rack 933 is integrally provided with a sliding block 935 which is slidingly installed in the collection slide rail 934. When the connecting cable 94 is collected, the gas cylinder 936 is started to push the collection rack 933 to move along the collection slide rail 934, so as to improve the stability of the collection rack 933 during the movement.

[0086] With reference toFigure 3 and Figure 6 In order to enable the connecting cable 94 to keep stretching the prestressed plate 10 during the process of pouring the perlite thermal insulation mortar and waiting for the solidification of the perlite thermal insulation mortar, a limiting assembly 15 is arranged on the cross keel 11 to limit the reverse rotation of the bunching gear 931.

[0087] Specifically, the limiting assembly 15 comprises a ratchet wheel 151, a pawl 152 and a return spring 153. The ratchet wheel 151 is coaxially fixed on the bunching gear 931, the pawl 152 is rotatably installed on the cross keel 11, the pawl 152 is engaged with the ratchet wheel 151, a fixed plate is arranged on the cross keel 11 and is fixed on the cross keel 11 by spot welding, one end of the return spring 153 is welded on the side of the pawl 152 away from the ratchet wheel 151, and the other end of the return spring 153 is welded on the fixed plate. The return spring 153 always applies a pushing force to the pawl 152 towards the ratchet wheel 151.

[0088] During the process of bunching the connecting cable 94 onto the bunching reel 932, the ratchet wheel 151 rotates forwardly, and the pawl 152 does not affect the rotation of the ratchet wheel 151. Once the ratchet wheel 151 has a reverse rotation tendency, the pawl 152 engaged with the ratchet wheel 151 will prevent the rotation of the ratchet wheel 152, thereby limiting the connecting cable 94.

[0089] With reference to Figure 3 Further, before pouring the perlite thermal insulation mortar, the prestressed plate 10 is applied with prestress, and a locking bolt 16 is arranged on the flange plate of the prestressed plate 10. The locking bolt 16 abuts the prestressed plate 10 against the vertical keel 12, so that the prestressed plate 10 is fixed on the vertical keel 12.

[0090] The implementation principle of the light steel keel composite board in the embodiment of the application is that the prestressed plate 10 is arranged in the filling space 2 and is embedded in the thermal insulation layer 3, thereby enhancing the structural strength of the thermal insulation layer 3. The adjusting mechanism 9 is arranged to stretch the prestressed plate 10 and apply prestress to the prestressed plate 10, so that the thermal insulation layer 3 has stronger bending resistance and bearing capacity, thereby improving the structural strength of the light steel keel composite board.

[0091] The embodiment of the application further discloses a fabricated building applying the light steel keel composite board.

[0092] With reference to Figure 7 The fabricated building applying the light steel keel composite board comprises wall bodies 17 made of light steel keel composite boards. The wall bodies 17 are coated with reinforcing nets 18 on surfaces. The reinforcing nets 18 connect the wall bodies 17 into a whole, thereby enhancing the integrity of the fabricated building.

[0093] In the embodiment of the application, the reinforcing net 18 is a steel net commonly used in building construction.

[0094] Referring to Figure 7 The surface of the wall body 17 is provided with a decorative layer 19, a filling area 20 is formed between the decorative layer 19 and the wall body 17, and the reinforcing net 18 is located in the filling area 20. An adhesive material 21 is cast in the filling area 20, and after the adhesive material 21 solidifies, a protective shell is formed together with the light steel keel frame 1 and the reinforcing net 18. By using the structure described above, on the one hand, the overall structural strength of the assembled building is enhanced, and on the other hand, the adhesive effect is achieved, the decorative layer 19 and the light steel keel composite board are bonded together, and the situation that the decorative layer 19 falls off is reduced. In the embodiment of the application, the decorative layer 19 is made of calcium silicate board, and the adhesive material 21 is cement mortar.

[0095] The implementation principle of the assembled building using the light steel keel composite board in the embodiment of the application is as follows: the wall body 17 of the assembled building is made of the light steel keel composite board, has the advantages of large structural strength and convenient assembly, the surface of the wall body 17 is covered with the reinforcing net 18 and the decorative layer 19 is covered outside the reinforcing net 18, cement mortar is cast between the decorative layer 19 and the wall body 17, after the cement mortar solidifies and forms, the decorative layer 19, the reinforcing net 18 and the wall body 17 are connected as a whole, and the structural strength of the assembled building as a whole is enhanced.

[0096] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: any equivalent changes made on the basis of the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A light steel keel composite board comprising a light steel keel frame (1), characterized in that: The light steel frame (1) includes cross keels (11) and vertical keels (12), the cross keels (11) are connected with the vertical keels (12) through fasteners (13), a filling space (2) is formed between the cross keels (11) and the vertical keels (12), a thermal insulation layer (3) is arranged in the filling space (2), a gap is left between the thermal insulation layer (3) and the cross keels (11) and the vertical keels (12) to form a curing space (4), and a curing layer (5) is arranged in the curing space (4); A prestressed plate (10) is arranged in the filling space (2), the prestressed plate (10) is connected with the vertical keel (12) through an adjusting mechanism (9), and the adjusting mechanism (9) is used for stretching the prestressed plate (10); The adjusting mechanism (9) includes a first adjusting assembly (91), a second adjusting assembly (92), a convergence assembly (93) and a connecting cable (94), the first adjusting assembly (91) is arranged at one end of the prestressed plate (10), the second adjusting assembly (92) is arranged at the other end of the prestressed plate (10), the convergence assembly (93) is arranged on the cross keel (11), and the connecting cable (94) is fixed to the convergence assembly (93) after sequentially passing through the first adjusting assembly (91) and the second adjusting assembly (92), and the convergence assembly (93) is used for converging the connecting cable (94); The first adjusting assembly (91) includes three first turning pieces (911), one of the first turning pieces (911) is arranged at one end of the prestressed plate (10), and the remaining two first turning pieces (911) are arranged on the vertical keel (12); the second adjusting assembly (92) includes a pair of second turning pieces (921), one of the second turning pieces (921) is arranged at the other end of the prestressed plate (10), and the other second turning piece (921) is arranged on the vertical keel (12); The convergence assembly (93) includes a convergence gear (931), a convergence reel (932), a convergence rack (933), a gas cylinder (936) and a convergence sliding rail (934), the convergence sliding rail (934) is bolted to the cross keel (11), the convergence rack (933) is integrally formed with a sliding block (935), the sliding block (935) is slidingly installed on the convergence sliding rail (934), the gas cylinder (936) is installed on the cross keel (11), a piston rod of the gas cylinder (936) is connected with one end of the convergence rack (933) through a connecting assembly (14), the convergence reel (932) is coaxially connected to the convergence gear (931), an axle of the convergence gear (931) is fixed to the cross keel (11), and the convergence gear (931) is engaged with the convergence rack (933). The connecting cable (94) is sequentially wound around three first turning pieces (911) to stretch one end of the prestressed plate (10) towards the vertical keel (12), and the connecting cable (94) is sequentially wound around two second turning pieces (921) to stretch the other end of the prestressed plate (10) towards another vertical keel (12).

2. A light-gauge steel stud composite panel according to claim 1, characterised in that: The sound insulation felt (6) is arranged between the solidified layer (5) and the heat preservation layer (3), and a plurality of fixed screws (7) are arranged in the filling space (2), the fixed screws (7) penetrate through the heat preservation layer (3) and the sound insulation felt (6), and the fixed nuts (8) are threadedly connected to the parts of the fixed screws (7) extending out of the sound insulation felt (6).

3. The light-gauge steel stud composite panel of claim 1, wherein: The first turning piece (911) comprises a first screw rod (9111), a first sleeve (9112) and a first limiting cover plate (9113), the first sleeve (9112) is sleeved on the first screw rod (9111), a containing groove (91121) for winding the connecting cable (94) is arranged on the outer wall of the first sleeve (9112) in the circumferential direction, the first limiting cover plate (9113) is threadedly connected on the first screw rod (9111), the first screw rod (9111) at the vertical keel (12) is fixed with the vertical keel (12), and the first screw rod (9111) at the prestressed plate (10) is fixed with the prestressed plate (10).

4. The light-gauge steel stud composite panel of claim 1, wherein: The connecting assembly (14) comprises a connecting plate (141) arranged on the converging rack (933), and a piston plate (142) is arranged on the piston rod of the air cylinder (936), and the connecting plate (141) and the piston plate (142) are bolted.

5. The light-gauge steel stud composite panel of claim 1, wherein: The limiting assembly (15) is arranged on the cross keel (11), the limiting assembly (15) comprises a ratchet wheel (151), a pawl (152) and a return spring (153), the ratchet wheel (151) is coaxially fixed on the converging gear (931), the pawl (152) is rotatably installed on the cross keel (11), the ratchet wheel (151) is engaged with the pawl (152), and one end of the return spring (153) is fixed on the cross keel (11), and the other end is fixed with the pawl (152).

6. A fabricated building using the light gauge steel stud composite panel of claim 1, characterized in that: The wall body (17) is made of a light steel keel composite plate, the surface of the wall body (17) is covered with a binding net (22), a decorative plate (24) is arranged on the side of the binding net (22) away from the wall body (17), a filling area (20) is formed between the binding net (22) and the decorative plate (24), and the filling area (20) is filled with an adhesive material (21).

7. A method of constructing a building of the type defined in claim 6, characterized by: The method comprises the following steps: Step S1: manufacturing light steel keel composite plates of corresponding specifications according to a design scheme, then transporting the light steel keel composite plates to a construction site, and connecting adjacent light steel keel composite plates into one body by using self-tapping screws to form an outline of the fabricated building; Step S2: pre-burying or on-site installing various pipelines required by the fabricated building in the heat preservation layer (3) of the light steel keel composite plate; Step S3: Install the binding net (22) on the outer surface of the fabricated building, and fix the binding net (22) on the light steel keel composite board by using self-tapping screws, so that the binding net (22) is wrapped and fixed on the surface of the fabricated building, and the surface of the fabricated building forms a continuous whole through the binding net (22); Step S4: Spray or apply cement mortar on the binding net (22), and the cement mortar fills the gap between the light steel keel composite board and the binding net (22) through the binding net (22), so that the connecting part of the horizontal keel (11) and the vertical keel (12), the fastener (13) and the binding net (22) are all wrapped in the cement mortar, and a continuous connecting layer (23) is formed together; Step S5: Install the decorative plate (24) on the connecting layer (23) by using self-tapping screws, and then inject the adhesive material (21) between the decorative plate (24) and the connecting layer (23), and after the adhesive material (21) solidifies, the decorative plate (24) is integrated with the light steel keel composite board through the adhesion of the self-tapping screws and the adhesive material (21).

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