Hole-opening-free shear wall formwork, laminated shear wall and construction method of laminated shear wall

Abstract

The invention relates to a trepanning-free shear wall formwork, a laminated shear wall and a construction method of the trepanning-free shear wall formwork, the trepanning-free shear wall formwork comprises a first formwork plate, a second formwork plate, a reinforcement cage and an opposite-pulling device, and the opposite-pulling device comprises a lock catch assembly and a lock head assembly; a second formwork plate and a first formwork plate are arranged on the front side and the rear side of the reinforcement cage correspondingly, the lock catch assembly comprises a lock catch base, one side of the lock catch base is fixedly arranged on the inner side face of the first formwork plate, and a lock catch is arranged on the other side of the lock catch base; the lock head assembly comprises a lock head base, one side of the lock head base is fixedly arranged on the inner side face of the second mold shell plate, a lock head is arranged on the other side of the lock head base, and the lock head and the lock catch are clamped in a one-to-one correspondence mode, so that the first mold shell plate and the second mold shell plate are oppositely pulled. According to the hole-opening-free shear wall formwork, hole opening and disassembly-free opposite pulling are achieved, operation on a construction site is reduced, the shear wall construction convenience is improved, and the integration level and the industrialization level of a fabricated building and a modular building are improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a shear wall formwork, a composite shear wall and a construction method thereof. Background Art

[0002] With the development of social economy and the transformation of the construction industry, prefabricated buildings and modular buildings have developed rapidly and have been widely used, and the level of building industrialization and integration has been continuously improved. However, in the existing prefabricated and modular building systems, there are still many on-site operations, which seriously affect the integration. In order to avoid mold expansion during the pouring of concrete in the composite shear wall structure, the concrete formwork on both sides needs to be tied together.

[0003] Chinese patent document CN208267361U discloses a shear wall formwork, comprising: a first part, comprising a first support, a first clamping part and a first main board, the first support and the first clamping part are arranged on the outside of the first main board, and the first clamping part is used to clamp the first support; a second part, comprising a second support, a second clamping part and a second main board, the second support and the second clamping part are arranged on the outside of the second main board, and the second clamping part is used to clamp the second support; and a threaded connection mechanism, passing through the first main board and the second main board, and being connected to the first clamping part and the second clamping part respectively to pull the first main board and the second main board; the threaded connection mechanism comprises a screw, a first nut and a second nut, the first nut and the second nut are connected to the screw to respectively fasten the first clamping part and the second clamping part; the first nut and the first clamping part are welded into one piece, or the second nut and the second clamping part are welded into one piece. The defects and shortcomings of the shear wall formwork are as follows: (1) the operating space of the shear wall formwork is narrow, making it difficult to achieve tension without drilling holes, and holes need to be drilled before installing tension screws; (2) the tension screws need to be installed on-site, which requires more on-site operations, leading to a low level of industrialization of prefabricated buildings and modular buildings; (3) the tension holes affect interior decoration. After the concrete is poured in the shear wall, it is necessary to remove the fastening nuts and tension screws, seal the holes, and paint the walls, which requires more on-site operations, further leading to a low degree of integration of prefabricated buildings and modular buildings. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a shear wall formwork, a composite shear wall and a construction method thereof, which solve the technical problems of complex construction operation and low industrialization level of the existing shear wall formwork tensioning device.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] In a first aspect, an embodiment of the present invention provides a non-perforated shear wall formwork, comprising a first formwork plate, a second formwork plate, a steel cage and a tensioning device, wherein the tensioning device comprises a locking assembly and a locking head assembly;

[0009] A second formwork plate and a first formwork plate are respectively arranged on the front and rear sides of the steel cage, and a plurality of locking components are arranged at intervals on the first formwork plate. The locking components include a locking base, one side of the locking base is fixedly arranged on the inner side of the first formwork plate, and a locking buckle is arranged on the other side of the locking base;

[0010] A plurality of lock assemblies are arranged at intervals on the second mold shell plate, and the lock assembly includes a lock base, one side of the lock base is fixedly arranged on the inner side surface of the second mold shell plate, and a lock is arranged on the other side of the lock base, and the lock is engaged with the lock buckle in a one-to-one correspondence, thereby pulling the first mold shell plate and the second mold shell plate opposite each other.

[0011] Optionally, the lock is a frame-shaped structure with a hole inside, and two ends of the frame-shaped structure are a fixed end and a free end, respectively, and the fixed end is connected to the lock base;

[0012] The lock head is an L-shaped structure, with a fixed end and a free end at the two ends of the L-shaped structure. The fixed end is connected to the lock head base, and the free end can extend into the hole and be engaged with the lock buckle;

[0013] A first anti-slip serration is arranged on the inner side of the hole, and a second anti-slip serration is arranged on the free end of the lock head corresponding to the inner side area of ​​the hole, and the first anti-slip serration is in abutment with the second anti-slip serration.

[0014] Optionally, the lock base is rotatably connected to the lock, and the lock can be movable between a vertical stowed position and a horizontal working position;

[0015] The lock base is rotatably connected to the lock, and the lock can be movable between a vertical stowed position and a horizontal working position.

[0016] Optionally, the locking assembly further includes a first shaft support and a first rotating shaft;

[0017] A first shaft support is respectively arranged on the left and right sides of the lock base, the first shaft support rotatably supports the first rotating shaft, the first rotating shaft is connected to the lock, and a first torsion spring is sleeved on the first rotating shaft, one side of the first torsion spring abuts against the lock base, and the other side of the first torsion spring abuts against the lock to drive the lock to rotate from a vertical retracted position to a horizontal working position.

[0018] Optionally, a rotation limit plate is provided on one side of the lock buckle close to the first rotating shaft, and when the first torsion spring drives the lock buckle to rotate to the horizontal working position, the rotation limit plate abuts against the inner side surface of the lock buckle base, thereby keeping the lock buckle in the horizontal working position.

[0019] Optionally, the lock assembly further includes a second shaft support and a second rotating shaft;

[0020] A second shaft support is respectively arranged on the left and right sides of the lock base, the second shaft support rotatably supports the second rotating shaft, the second rotating shaft is connected to the fixed end of the lock, and a second torsion spring is sleeved on the second rotating shaft, one side of the second torsion spring abuts the lock base, and the other side of the second torsion spring abuts the lock to drive the lock to rotate from the vertical retracted position to the horizontal working position, and insert the lock buckle to lock it.

[0021] Optionally, the pulling device further includes a limit pin;

[0022] A rotation limit rod extending in the horizontal direction is arranged in the middle of the lock, and a latch seat is arranged on the lock base, and a slot is opened on the latch seat. When the lock is in the vertical retracted position, the limit latch can pass through the slot and abut against the rotation limit rod to keep the lock in the vertical retracted position.

[0023] Optionally, in the vertical direction, multiple lock assemblies located on the same straight line constitute a row of lock assemblies, and a limit pin can be inserted into all the pin seats of each row of lock assemblies. The limit pin abuts against the rotation limit rod of the row of lock assemblies to keep the locks of the row of lock assemblies in the vertical retracted position.

[0024] In a second aspect, an embodiment of the present invention provides a composite shear wall, which is cast by using the above-mentioned opening-free shear wall formwork.

[0025] In a third aspect, an embodiment of the present invention provides a construction method of the above-mentioned composite shear wall, comprising the following steps:

[0026] Step S1, factory prefabrication, including: prefabricating a first formwork plate and a plurality of locking components together to form a first module; prefabricating a second formwork plate, a steel cage and a plurality of locking components together to form a second module;

[0027] Step S2, pushing the lock heads of the multiple lock head assemblies to the vertical retracted position, and inserting the limit pins into the pin seats of the lock head assemblies, so that the lock heads of each row of lock head assemblies are kept in the vertical retracted position;

[0028] Step S3, installing the second module: at the construction site, hoisting and lowering the second module to a preset position;

[0029] Step S4, installing the first module: at the construction site, hoisting and lowering the first module, during which the lock of the lock assembly automatically rebounds to avoid the horizontal steel bars of the steel cage until the first module is lowered to a preset position;

[0030] Step S5, locking the lock head assembly and the lock catch assembly: pull out the limit pin, and release the restrictions on the lock heads of each lock head assembly from bottom to top, so that the lock heads of each lock head assembly rotate downward and insert into the lock catch of the lock catch assembly, and repeat this operation until each row of pulling devices completes locking and pulling;

[0031] Step S6: pouring concrete between the first formwork plate and the second formwork plate, and finally completing the construction of the composite shear wall.

[0032] (III) Beneficial effects

[0033] The beneficial effects of the present invention are as follows: the opening-free shear wall formwork of the present invention comprises a first formwork plate, a second formwork plate, a steel cage and a pulling device, the pulling device comprises a locking assembly and a locking head assembly; the second formwork plate and the first formwork plate are respectively arranged on the front and rear sides of the steel cage, a plurality of locking head assemblies are arranged at intervals on the first formwork plate, the locking head assembly comprises a locking head base, one side of the locking head base is fixedly arranged on the inner side surface of the first formwork plate, and a locking head is arranged on the other side of the locking head base; a plurality of locking head assemblies are arranged at intervals on the second formwork plate, the locking head assembly comprises a locking head base, one side of the locking head base is fixedly arranged on the inner side surface of the second formwork plate, and a locking head is arranged on the other side of the locking head base, the locking head and the locking head are clamped in a one-to-one correspondence, thereby pulling the first formwork plate and the second formwork plate. Compared with the existing shear wall formwork tensioning device, it overcomes the complex processes of the prior art, such as the need to reserve holes, install tensioning devices on site, fill holes and paint walls after pouring concrete, etc. It reduces on-site operations and does not affect interior decoration. It realizes tensioning without drilling holes and disassembly, thereby greatly reducing construction site operations. This significantly improves the construction convenience of shear walls, as well as the integration and industrialization level of prefabricated buildings and modular buildings.

[0034] The hole-free shear wall formwork of the present invention has a lock base that is rotatably connected to the lock, so that the lock can move between a vertical stowed position and a horizontal working position. This solves the problem of the lock colliding with the horizontal steel bars of the shear wall during lifting and falling, and reduces the difficulty of lifting.

[0035] The hole-free shear wall formwork of the present invention can automatically release the locks of each lock assembly through a limit pin, so that the locks of each lock assembly rotate downward toward a horizontal working position and are inserted into the lock buckle for tightening, thereby realizing automatic pulling operation in a narrow space, further improving the construction convenience of the shear wall, and the integration and industrialization level of prefabricated buildings and modular buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional schematic diagram of Embodiment 1 of the non-perforated shear wall formwork of the present invention;

[0037] Figure 2 for Figure 1 A partial enlarged schematic diagram of the shear wall formwork without openings.

[0038] Figure 3 It is a three-dimensional schematic diagram of Embodiment 1 of the pulling device of the present invention, wherein the pulling device comprises a lock assembly and a lock head assembly, and the lock assembly and the lock head assembly are not connected together;

[0039] Figure 4 It is another three-dimensional schematic diagram of the embodiment 1 of the pulling device of the present invention, wherein the lock catch assembly is engaged with the lock head assembly;

[0040] Figure 5 for Figure 3 A three-dimensional schematic diagram of the locking assembly in FIG.

[0041] Figure 6 for Figure 3 An exploded view of the lock assembly in FIG.

[0042] Figure 7 for Figure 3 A three-dimensional schematic diagram of the lock assembly in FIG.

[0043] Figure 8 It is a three-dimensional schematic diagram of the first formwork plate and the locking assembly of Example 1 of the opening-free shear wall formwork of the present invention;

[0044] Fig. 9 It is a three-dimensional schematic diagram of the second formwork plate and the locking head assembly of Example 1 of the opening-free shear wall formwork of the present invention.

[0045] [Description of Reference Numerals]

[0046] 1: lock assembly; 11: lock base; 12: lock; 13: first anti-slip serration; 14: first shaft support; 15: first rotating shaft; 16: first torsion spring; 17: rotation limit plate;

[0047] 2: lock assembly; 21: lock base; 22: lock; 23: second anti-slip serrations; 24: second shaft support; 25: second rotating shaft; 26: second torsion spring; 27: rotation limit rod; 28: latch seat;

[0048] 3: Limit latch;

[0049] 4: the first formwork plate;

[0050] 5: the second formwork plate;

[0051] 6: Steel cage. DETAILED DESCRIPTION

[0052] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 The orientation is used as a reference.

[0053] Embodiment 1:

[0054] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a shear wall formwork without openings, including a first formwork plate 4, a second formwork plate 5, a steel cage 6 and a tensioning device, and the tensioning device includes a locking assembly 1 and a locking head assembly 2.

[0055] A second formwork plate 5 and a first formwork plate 4 are respectively arranged on the front and rear sides of the steel cage 6. A plurality of locking assemblies 1 are arranged at intervals on the first formwork plate 4. The locking assemblies 1 include a locking base 11. One side of the locking base 11 is fixedly arranged on the inner side surface of the first formwork plate 4, and a lock 12 is arranged on the other side of the locking base 11.

[0056] A lock assembly 2 is arranged on the second mold shell plate 5 corresponding to each locking assembly 1 installation area, and the lock assembly 2 includes a lock base 21. One side of the lock base 21 is fixedly arranged on the inner side surface of the second mold shell plate 5, and a lock 22 is arranged on the other side of the lock base 21. The lock 22 is clamped with the lock 12 in a one-to-one correspondence, thereby pulling the first mold shell plate 4 and the second mold shell plate 5 together.

[0057] The hole-free shear wall formwork of this embodiment realizes hole-free and disassembly-free pulling because the tensioning device includes a locking assembly 1 and a locking head assembly 2, thereby greatly reducing the construction site operations and not affecting the subsequent interior decoration. This significantly improves the convenience of shear wall construction, as well as the integration and industrialization level of prefabricated buildings and modular buildings.

[0058] Preferably, the lock buckle 12 is a frame-shaped structure with a hole inside, and the two ends of the frame-shaped structure are a fixed end and a free end respectively, and the fixed end is connected to the lock buckle base 11; the lock head 22 is an L-shaped structure with a fixed end and a free end at the two ends of the L-shaped structure, and the fixed end is connected to the lock head base 21, and the free end can extend into the hole to engage with the lock buckle 12.

[0059] The inner side of the hole is provided with a first anti-slip serration 13, and the free end of the lock head 22 is provided with a second anti-slip serration 23 in the inner side area corresponding to the hole, and the first anti-slip serration 13 and the second anti-slip serration 23 are in contact with each other. It should be noted that the first anti-slip serration 13 and the second anti-slip serration 23 are provided to increase the friction between the lock buckle 12 and the lock head 22 to prevent relative sliding between the two.

[0060] Furthermore, the lock base 11 is rotatably connected to the lock 12, and the lock 12 can be movable between a vertical stowed position and a horizontal working position.

[0061] The lock base 21 is rotatably connected to the lock 22, and the lock 22 can be movable between a vertical stowed position and a horizontal working position. It should be noted that the purpose of the rotatable design of the lock buckle 12 and the lock 22 is to avoid the horizontal steel bars of the steel cage 6 of the composite shear wall, thereby facilitating hoisting and improving construction efficiency.

[0062] Combination Figure 5 and Figure 6 As shown, the lock assembly 1 of this embodiment further includes a first shaft support 14 and a first rotating shaft 15. The first shaft supports 14 are respectively arranged on the left and right sides of the lock base 11, and the first rotating shaft 15 is rotatably supported inside the two first shaft supports 14. The first rotating shaft 15 is connected to the lock 12, and a first torsion spring 16 is sleeved on the first rotating shaft 15. One side of the first torsion spring 16 abuts against the lock base 11, and the other side of the first torsion spring 16 abuts against the lock 12, so that the lock 12 is rotated from the vertical stowed position to the horizontal working position.

[0063] Furthermore, a rotation limit plate 17 is provided on one side of the lock buckle 12 close to the first rotating shaft 15. When the first torsion spring 16 drives the lock buckle 12 to rotate to a horizontal working position, the rotation limit plate 17 abuts against the inner side surface of the lock buckle base 11, thereby keeping the lock buckle 12 in the horizontal working position and preventing it from continuing to rotate downward.

[0064] It should be noted that in the process of lifting and lowering the first formwork plate 1 with the locking assembly 1, the locking buckle 12 can rotate upward when encountering the horizontal steel bars of the steel cage 6 to automatically avoid it; and because the first torsion spring 16 is provided, when the locking buckle 12 passes through the horizontal steel bars, the locking buckle 12 can rebound to the horizontal working position until the first formwork plate 1 with the locking assembly 1 is placed in the predetermined position.

[0065] Combination Figure 7As shown, the lock assembly 2 of this embodiment further includes a second shaft support 24 and a second rotating shaft 25. The second shaft supports 24 are respectively arranged on the left and right sides of the lock base 21, and the second rotating shaft 25 is rotatably supported inside the two second shaft supports 24. The second rotating shaft 25 is connected to the fixed end of the lock 22, and a second torsion spring 26 is sleeved on the second rotating shaft 25, one side of the second torsion spring 26 abuts against the lock base 21, and the other side of the second torsion spring 26 abuts against the lock 22, so that the lock 22 is rotated from the vertical retracted position to the horizontal working position, and the lock buckle 12 is inserted and locked.

[0066] Furthermore, the pulling device further includes a limit pin 3. A rotation limit rod 27 extending in the horizontal direction is provided in the middle of the lock head 22, and a pin seat 28 is provided on the lock head base 21. A slot is provided on the pin seat 28. When the lock head 22 is in the vertical retracted position, the limit pin 3 can pass through the slot and abut against the rotation limit rod 27 to keep the lock head 22 in the vertical retracted position and prevent it from rotating downward toward the horizontal working position.

[0067] It should be noted that the limit pin 3 is rod-shaped. After being inserted into the slot on the pin seat 28, it can block the rotation limit rod 27 on the lock head 22 to temporarily fix the position of the lock head 22. When the limit pin 3 is pulled out, the lock head 22 automatically rebounds under the drive of the second torsion spring 26 and buckles the lock buckle 12.

[0068] Furthermore, in the vertical direction, multiple lock head assemblies 2 located on the same straight line constitute a row of lock head assemblies 2, and the slots on the pin seats 28 of each row of lock head assemblies 2 are coaxially arranged, so that a limit pin 3 can pass through all the pin seats 28 in the same row, and the limit pin 3 abuts against the rotation limit rod 27 of the row of lock head assemblies 2, so that the lock heads 22 of the row of lock head assemblies 2 are kept in the vertical retracted position. The purpose of such a setting is to synchronously control a row of lock head assemblies 2 to automatically pop out the lock heads 22, so as to reduce the operation on the construction site and improve the integration and industrialization level of shear wall construction.

[0069] The shear wall formwork of this embodiment can automatically avoid horizontal steel bars and automatically rebound to a horizontal working position by arranging the lock component 1 on the first formwork plate 4; by arranging the lock head component 2 on the second formwork plate 5, the lock head 22 of the lock head component 2 can be temporarily fixed by the limit pin 3, and the lock head 22 can be automatically popped out by pulling out the limit pin 3; through the cooperation of the lock component 1 and the lock head component 2, the pulling device can automatically avoid horizontal steel bars and automatically reset and lock, so as to improve the integration and industrialization level of shear wall construction.

[0070] It should be noted that the shear wall formwork of this embodiment can be used alone or integrated into building modules or other component products for use.

[0071] This embodiment also provides a composite shear wall, which is cast by using the above-mentioned hole-free shear wall formwork.

[0072] Embodiment 2:

[0073] See also Figure 8 and Fig. 9 A construction method of the composite shear wall of this embodiment comprises the following steps:

[0074] Step S1, factory prefabrication, including: prefabricating the first formwork plate 4 and multiple lock components 1 together to form a first module; prefabricating the second formwork plate 5, the steel cage 6 and multiple lock components 2 together to form a second module. Specifically, the production of the first module (refer to Figure 8 ) is as follows: first lay out the structural steel bars of the first formwork plate 4, then weld the lock base 11 of the lock assembly 1 to the structural steel bars according to the designed spacing, and finally pour concrete, maintain and demould to form the first module. Production of the second module (refer to Fig. 9 ) is as follows: first arrange the structural steel bars of the second formwork plate 5 and the steel cage 6, then weld the lock base 21 of the lock assembly 2 to the structural steel bars according to the designed spacing, and finally pour concrete, maintain and demould to form the second module.

[0075] Step S2, push the lock heads 22 of the multiple lock head assemblies 2 to the vertical retracted position, and insert the limit pins 3 into the pin seats 28 of the lock head assemblies 2, so that the lock heads 22 of each row of lock head assemblies 2 are kept in the vertical retracted position.

[0076] Step S3, installing the second module: at the construction site, hoisting and lowering the second module to a preset position.

[0077] Step S4, installation of the first module: At the construction site, the first module is hoisted and lowered. During the lowering process, the lock 12 of the lock assembly 1 automatically rebounds to avoid the horizontal steel bars of the steel cage 6 until the first module is lowered to a preset position. Specifically, the lock 12 can rotate upward when encountering the horizontal steel bars to automatically avoid them; when the lock 12 passes the horizontal steel bars, the lock 12 can rebound to a horizontal working position due to the first torsion spring 16.

[0078] Step S5, locking the lock head assembly 2 and the lock catch assembly 1: pull out the limit pin 3, and release the restriction on the lock head 22 of each lock head assembly 2 from bottom to top, so that the lock head 22 of each lock head assembly 2 rotates downward and is inserted into the lock catch 12 of the lock catch assembly 1, and repeat this operation to lock each column of the pulling device.

[0079] Step S6, pouring concrete between the first formwork plate 4 and the second formwork plate 5 to complete the construction of the composite shear wall.

[0080] The construction method of the composite shear wall of this embodiment realizes the process of pouring shear wall concrete without drilling holes, disassembly and tensioning, and does not affect interior decoration; during the hoisting process, only up and down movement is required, which reduces the difficulty of hoisting; during the tensioning process, only the limit pin 3 needs to be pulled out, which is convenient and quick, and automatic tensioning operation in a small space is realized.

[0081] In addition, the lock assembly 1 can be rotated 180° and installed on the first mold shell plate 4, and the lock head assembly 2 can be rotated 180° and installed on the second mold shell plate 5, and then the lifting sequence is changed accordingly, that is, the first module with the lock 12 is lifted first, and then the second module with the lock head 22 is lifted.

[0082] The rest of the same points as in Example 1 will not be repeated here.

[0083] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0084] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0086] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0087] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A non-opening shear wall formwork, characterized in that: It comprises a first formwork plate (4), a second formwork plate (5), a steel cage (6) and a tensioning device, wherein the tensioning device comprises a locking assembly (1) and a locking head assembly (2); A second formwork plate (5) and a first formwork plate (4) are respectively arranged on the front and rear sides of the steel cage (6); a plurality of locking components (1) are arranged at intervals on the first formwork plate (4); the locking components (1) include a locking base (11); one side of the locking base (11) is fixedly arranged on the inner side surface of the first formwork plate (4); and a locking buckle (12) is arranged on the other side of the locking base (11); A plurality of lock assemblies (2) are arranged at intervals on the second mold shell plate (5), and the lock assemblies (2) include a lock base (21), one side of the lock base (21) is fixedly arranged on the inner side surface of the second mold shell plate (5), and a lock (22) is arranged on the other side of the lock base (21), and the lock (22) is correspondingly engaged with the lock buckle (12) one by one, thereby pulling the first mold shell plate (4) and the second mold shell plate (5) together.

2. The non-perforated shear wall formwork according to claim 1, characterized in that: The lock buckle (12) is a frame-shaped structure with holes inside. The two ends of the frame-shaped structure are a fixed end and a free end respectively, and the fixed end is connected to the lock buckle base (11); The lock head (22) is an L-shaped structure, and the two ends of the L-shaped structure are a fixed end and a free end respectively. The fixed end is connected to the lock head base (21), and the free end can extend into the hole and be clamped with the lock buckle (12); A first anti-slip serration (13) is arranged on the inner side of the hole, and a second anti-slip serration (23) is arranged at the free end of the lock head (22) corresponding to the inner side area of ​​the hole, and the first anti-slip serration (13) and the second anti-slip serration (23) are in abutment with each other.

3. The non-perforated shear wall formwork according to claim 1, characterized in that: The lock base (11) is rotatably connected to the lock (12), and the lock (12) is movable between a vertical stowed position and a horizontal working position; The lock head base (21) is rotatably connected to the lock head (22), and the lock head (22) can be movable between a vertical stowed position and a horizontal working position.

4. The non-perforated shear wall formwork according to claim 3, characterized in that: The locking assembly (1) further comprises a first shaft support (14) and a first rotating shaft (15); A first shaft support (14) is respectively arranged on the left and right sides of the lock base (11), the first shaft support (14) rotatably supports a first rotating shaft (15), the first rotating shaft (15) is connected to the lock (12), and a first torsion spring (16) is sleeved on the first rotating shaft (15), one side of the first torsion spring (16) abuts against the lock base (11), and the other side of the first torsion spring (16) abuts against the lock (12), so as to drive the lock (12) to rotate from a vertical retracted position to a horizontal working position.

5. The non-perforated shear wall formwork according to claim 4, characterized in that: A rotation limit plate (17) is provided on one side of the lock buckle (12) close to the first rotating shaft (15); when the first torsion spring (16) drives the lock buckle (12) to rotate to a horizontal working position, the rotation limit plate (17) abuts against the inner side surface of the lock buckle base (11), thereby keeping the lock buckle (12) in the horizontal working position.

6. The non-perforated shear wall formwork according to claim 4, characterized in that: The lock assembly (2) further comprises a second shaft support (24) and a second rotating shaft (25); A second shaft support (24) is respectively arranged on the left and right sides of the lock base (21), the second shaft support (24) rotatably supports a second rotating shaft (25), the second rotating shaft (25) is connected to the fixed end of the lock (22), and a second torsion spring (26) is sleeved on the second rotating shaft (25), one side of the second torsion spring (26) abuts against the lock base (21), and the other side of the second torsion spring (26) abuts against the lock (22), so as to drive the lock (22) to rotate from a vertical retracted position to a horizontal working position, and insert the lock buckle (12) to lock.

7. The non-perforated shear wall formwork according to claim 6, characterized in that: The pulling device also includes a limit pin (3); A rotation limiting rod (27) extending in the horizontal direction is arranged in the middle of the lock head (22), a latch seat (28) is arranged on the lock head base (21), and a slot is provided on the latch seat (28). When the lock head (22) is located in the vertical retracted position, the limiting latch pin (3) can pass through the slot and abut against the rotation limiting rod (27) to keep the lock head (22) in the vertical retracted position.

8. The opening-free shear wall formwork according to claim 7, characterized in that: In the vertical direction, a plurality of lock head assemblies (2) located on the same straight line form a row of lock head assemblies (2), a limit pin (3) can be inserted into all the pin seats (28) of each row of lock head assemblies (2), and the limit pin (3) abuts against the rotation limit rods (27) of the row of lock head assemblies (2) to keep the lock heads (22) of the row of lock head assemblies (2) in a vertically retracted position.

9. A composite shear wall, characterized in that: The composite shear wall is cast using the opening-free shear wall formwork described in claim 8.

10. A construction method of a composite shear wall as claimed in claim 9, characterized in that: The steps include: Step S1, factory prefabrication, comprising: prefabricating a first formwork plate (4) and a plurality of locking components (1) together to form a first module; prefabricating a second formwork plate (5), a steel cage (6) and a plurality of locking components (2) together to form a second module; Step S2, pushing the lock heads (22) of the plurality of lock head assemblies (2) to a vertically retracted position, and inserting a limit latch (3) into the latch seat (28) of the lock head assembly (2), so that the lock heads (22) of each row of lock head assemblies (2) are kept in the vertically retracted position; Step S3, installing the second module: at the construction site, hoisting and lowering the second module to a preset position; Step S4, installing the first module: at the construction site, hoisting and lowering the first module, during the lowering process, the lock (12) of the lock assembly (1) automatically rebounds to avoid the horizontal steel bars of the steel cage (6) until the first module is lowered to a preset position; Step S5, locking the lock head assembly (2) and the lock catch assembly (1): pulling out the limit pin (3), and releasing the restriction of the lock head (22) of each lock head assembly (2) from bottom to top, so that the lock head (22) of each lock head assembly (2) rotates downward and is inserted into the lock catch (12) of the lock catch assembly (1), and repeating this operation until each row of pulling devices completes locking and pulling; Step S6: pouring concrete between the first formwork plate (4) and the second formwork plate (5), and finally completing the construction of the composite shear wall.

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