Rapid assembling and locking structure for laminated slabs

Abstract

The invention discloses a laminated slab rapid assembling and locking structure which comprises a first laminated slab and a second laminated slab which are spliced with each other, and hooks used for carrying treatment are fixed to the corner positions of the peripheries of the tops of the first laminated slab and the second laminated slab; a positioning plate is slidably arranged in the right side of the first laminated plate, butt-joint air cushions are arranged on the left and right sides of the first laminated plate and the second laminated plate in an attached mode, a set of matching holes used for moving of the positioning plate are excavated in the center of the face of each butt-joint air cushion, and a butt-joint groove is further formed in the end, away from the positioning plate, of the first laminated plate; and accumulated water is prevented from being accumulated at the top positions of the first laminated slab and the second laminated slab. According to the rapid assembling and locking structure for the laminated slabs, the embedded wedge blocks are combined, and the threaded bolts are rotated for wedging, so that gas in the first laminated slab and the second laminated slab can be conveniently conveyed into the butt-joint air cushions, the two butt-joint air cushions can be precisely attached, physical sealing is formed, and rainwater permeation on the top of a high-rise building is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field related to composite panels, and in particular to a composite panel quick assembly and locking structure. Background Art

[0002] Composite slabs are a type of building formwork that combines prefabricated and cast-in-place concrete. The connecting components of the composite slab are welded from a keel steel truss. When the concrete is poured, the connecting components of the composite slab merge with the steel and concrete, providing a stronger bond and a stronger structure. The prefabricated prestressed thin plates (5 to 8 cm thick) are combined with the upper cast-in-place concrete layer to form a whole and work together. Composite slabs can be used when they are butt-jointed and installed, especially when laying on high-rise roofs. Later, insulation and protective layers will need to be laid on top of the composite slabs, requiring the assistance of a quick-assembly locking structure.

[0003] The existing composite panels are not convenient to be quickly assembled during use, which leads to certain disadvantages in the installation process. In order to solve the above problems, reference can be made to the prior art (Chinese patent application number CN202222792465.8, application date 2022-10-24), which discloses a composite panel for prefabricated construction. The composite panel is composed of a group of middle panels, two groups of side panels, and two groups of connecting panels. Each component can be replaced separately and the splicing can be completed quickly, saving time and labor. The exterior is neat after assembly. The middle plate is connected to the fourth slots on both sides, and the first plug-in plate is connected to the fifth slot. The width of the first plug-in plate is smaller than the width of the second plug-in plate so that it will not shake after being clamped; and reference can be made to a new type of assembled composite plate for construction disclosed in the prior art (application number CN202221727123.1, application date 2022-07-06 Chinese patent). The upper composite plate of the composite plate is installed above the lower composite plate, and the upper boss and the upper interference groove are socketed, the lower boss and the upper interference groove are socketed, and the locking steel bar is inserted into the through groove, and the locking steel bar passes through and extends The cam is fastened to the upper and lower decks to prevent the upper and lower decks from being moved out, thereby enhancing the tightness between the lower and upper decks. During the subsequent concrete pouring construction, there will be no leakage of mortar at the joints, and even honeycomb surface problems, which improves the quality. Finally, a composite plate assembly structure disclosed in the prior art (application number CN202122359562.3, application date 2021-09-28 Chinese patent) can be referred to. The assembly structure is assembled by a first composite plate, a second composite plate, and a second composite plate. The arrangement of the composite plate, positioning rod, return spring, fixed plate, fixed hole, clamping block and rubber pad, the second composite plate can be clamped inside the fixing hole by the clamping block, which is convenient for buckling the first composite plate and the second composite plate, and maintaining the stability of the composite plates during assembly; one end of the positioning rod can be inserted into the interior of the fixed plate, and the force of the return spring can be used to automatically clamp one end of the positioning rod inside the fixed plate, which is convenient for assembling and fixing the first composite plate and the second composite plate, and convenient for assembling multiple composite plates, greatly improving the work efficiency of the staff, and facilitating installation and disassembly.

[0004] Although the assembly structure of the above-mentioned composite panels can achieve the purpose of rapid assembly when used, there are still other problems in the process of work. When building a high-rise, the composite panels can be used as the flat plates of the high-rise top floor. When two sets of composite panels are docked and installed, there will be a certain gap between the two sets of composite panels, which may lead to the phenomenon of leakage in the later stage. In addition, the docking work also needs to ensure that the top surface has a certain slope. The existing composite panels cannot solve the above problems well.

[0005] Therefore, we propose a fast assembly and locking structure for composite panels to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a quick assembly and locking structure of composite panels to solve the problem raised in the above-mentioned background technology that composite panels can be used as flat plates for high-rise top floors during high-rise construction. When two sets of composite panels are docked and installed, there will be a certain gap between the two sets of composite panels, which may lead to the phenomenon of late leakage. In addition, the docking work also requires ensuring that the top surface has a certain slope.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a quick assembly and locking structure for composite panels, comprising a first composite panel and a second composite panel spliced together, wherein hooks for carrying and processing are fixed at the corner positions around the top of the first composite panel and the second composite panel; a positioning plate is slidingly provided inside the right side of the first composite panel, and docking air cushions are fitted on the left and right sides of the first composite panel and the second composite panel, a group of matching holes for moving the positioning plate are excavated in the center of the docking air cushion surface, and a docking groove is also provided at one end of the first composite panel away from the positioning plate; a positioning mechanism is also provided at the top position of the top of the first composite panel near the top of the docking groove, and the setting of the positioning mechanism realizes a seamless connection between the first composite panel and the second composite panel; a lifting mechanism is provided at the inner center position of the first composite panel and the second composite panel, and the lifting mechanism realizes a slight lifting of the height of the center of the top surface of the first composite panel and the second composite panel to avoid accumulation of water at the top position of the first composite panel and the second composite panel.

[0008] Preferably, the positioning mechanism includes a rotating threaded bolt rotatably set on the top of the first composite plate, and the bottom outer side of the rotating threaded bolt is threadedly connected to the inside of the embedded wedge block, the outer side of the embedded wedge block is slidably set inside the first composite plate, and the bottom position of the embedded wedge block extends into the inside of the docking groove. The bottom of the embedded wedge block and the embedded hole are in the same vertical line. The embedded wedge block squeezes the embedded hole, so that the positioning plate moves toward the inside of the docking groove, thereby realizing tight splicing between the first composite plate and the second composite plate.

[0009] Preferably, the embedded wedge block is square in shape, and the bottom surface of the embedded wedge block is inclined, and the movement of the embedded wedge block realizes the operation of the sealing mechanism inside the first laminate plate and the second laminate plate.

[0010] Preferably, the sealing mechanism includes a first piston bar embedded in a wedge block and extending into one end of the first composite plate. The outer side of the first piston bar is fitted into a sealing groove opened inside the first composite plate. One side of the first piston bar is connected to the inner wall of the sealing groove through a guide. The sealing groove is also connected to a first air pipe at one end away from the first piston bar. The outer end of the first air pipe is connected to the docking air cushion on the right.

[0011] Preferably, the sealing mechanism also includes a second piston bar that is engaged with one end of the positioning plate extending into the interior of the docking groove, and the other end of the second piston bar is connected to the inner wall of the docking groove through several groups of connecting springs. One end of the inner side of the docking groove is also connected to a second air pipe, and the other end of the second air pipe is connected to the docking air cushion on the left.

[0012] Preferably, the outer wall of the second piston bar is in contact with the inner wall of the docking groove, and the docking air cushions on the left and right sides are both made of elastic rubber.

[0013] Preferably, the guide member is frame-shaped, and the inner wall of the guide member is positioned to fit the outer wall of the first piston bar, and the first piston bar forms a sliding structure between the guide member and the inner wall of the sealing groove, and the interior of the sealing groove and the docking groove are filled with krypton gas.

[0014] Preferably, the lifting mechanism includes a third air pipe connected to the inner middle position of the docking groove, and the other end of the third air pipe is forked and connected to the middle position of several groups of lifting members, and the upper and lower ends of the lifting members are fixed in the sliding receiving groove opened on the inner wall of the first composite plate.

[0015] Preferably, the vertical tube and the longitudinal rod are included, the longitudinal rod is slidably provided on the inner side of the vertical tube, and a fitting pad is fixed at the bottom position of the longitudinal rod, and the bottom of the fitting pad is connected to the inner wall of the vertical tube through a matching spring.

[0016] Preferably, the third air supply pipe has an internal two-way check valve, and the elastic force of the two-way check valve is greater than the elastic force of the docking air cushion.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the fast assembly and locking structure of the composite panel uses the third gas pipe to transmit gas pressure to the lifting member through the lifting mechanism, and the elastic cooperation between the vertical pipe and the longitudinal rod causes the center of the top surface of the composite panel to be slightly lifted to form a drainage slope (radian of about 2°), effectively preventing water accumulation on the roof of a high-rise building; at the same time, the sealing mechanism drives the docking air cushion to expand and seal the gap between the panels through the krypton gas-filled piston bar and the gas pipe. Combined with the wedge block thread locking structure, the waterproof performance and structural stability of the composite panel after splicing are significantly improved, and it is particularly suitable for the efficient installation and leakage prevention of precast concrete floor slabs. The specific contents are shown below:

[0018] (1) By setting the hook, the first and second composite panels can be quickly transported and processed, which is convenient for the subsequent positioning and installation work, and is particularly suitable for the continuous installation of multiple composite panels in high-rise construction.

[0019] (2) By integrating the embedded wedges and tightening the threaded bolts, the gas inside the first and second composite panels can be easily transported to the interior of the docking air cushions, thereby achieving precise fitting of the two sets of docking air cushions, thereby forming a physical seal to prevent rainwater from penetrating the roof of the high-rise building.

[0020] (3) A longitudinal rod and a matching spring are set in the vertical tube of the lifting member. By adjusting the extension length of the longitudinal rod, the slope of the top surface of the composite plate can be accurately controlled, avoiding the error of manual slope finding in traditional construction. It is especially suitable for preventing water accumulation on high-rise roofs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0023] Figure 3 This is a bottom view of the structure of the first composite plate of the present invention;

[0024] Figure 4 This is a schematic diagram of the main cross-sectional structure of the embedded wedge of the present invention;

[0025] Figure 5 This is a schematic diagram of the top cross-sectional structure of the positioning plate of the present invention;

[0026] Figure 6 Schematic diagram of the main cross-sectional structure of the first composite plate of the present invention;

[0027] Figure 7 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0028] Figure 8This is a partial front view of the structure of the first composite plate of the present invention;

[0029] Figure 9 This is a schematic diagram of the main cross-sectional structure of the lifting member of the present invention.

[0030] In the figure: 1. First composite plate; 2. Second composite plate; 3. Hook; 4. Positioning plate; 5. Matching hole; 6. Docking groove; 7. Docking air cushion; 8. Rotating threaded bolt; 9. Embedded wedge; 10. Embedded hole; 11. First piston bar; 12. Sealing groove; 13. Guide; 14. First air pipe; 15. Second piston bar; 16. Connecting spring; 17. Second air pipe; 18. Third air pipe; 19. Lifting member; 1901. Vertical pipe; 1902. Longitudinal rod; 1903. Fitting pad; 1904. Matching spring; 20. Accommodating groove. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1-9 The present invention provides the following technical solution: a fast assembly and locking structure for composite panels.

[0033] Example 1: In order to solve the problem of leakage in the later stage, composite panels can be used as the flat panels of the top floor of a high-rise building. When two sets of composite panels are butt-jointed and installed, there will be a certain gap between the two sets of composite panels. Figure 1 -Attached Figure 8, including a first composite plate 1 and a second composite plate 2 spliced together, hooks 3 for handling are fixed at the corners around the top of the first composite plate 1 and the second composite plate 2; a positioning plate 4 is slidingly provided inside the right side of the first composite plate 1, and docking air cushions 7 are fitted on the left and right sides of the first composite plate 1 and the second composite plate 2. A group of matching holes 5 for moving the positioning plate 4 are excavated in the center of the surface of the docking air cushion 7, and a docking groove 6 is also provided at one end of the first composite plate 1 away from the positioning plate 4; a positioning mechanism is also provided at the top of the first composite plate 1 near the top of the docking groove 6, and the setting of the positioning mechanism realizes seamless connection between the first composite plate 1 and the second composite plate 2. ; The positioning mechanism includes a rotating threaded bolt 8 rotatably set on the top of the first composite plate 1, and the bottom outer side of the rotating threaded bolt 8 is threadedly connected to the inside of the embedded wedge 9. The outer side of the embedded wedge 9 is slidably set inside the first composite plate 1, and the bottom position of the embedded wedge 9 extends into the inside of the docking groove 6. The bottom of the embedded wedge 9 and the embedded hole 10 are in the same vertical line. The embedded wedge 9 squeezes the embedded hole 10 to make the positioning plate 4 move toward the inside of the docking groove 6, thereby realizing a tight splicing between the first composite plate 1 and the second composite plate 2; the shape of the embedded wedge 9 is a square setting, and the bottom surface position of the embedded wedge 9 is an inclined surface setting. The embedded wedge 9 The movement of the first composite plate 1 and the second composite plate 2 realizes the operation of the sealing mechanism inside the first composite plate 1; the sealing mechanism includes a first piston strip 11 embedded in the wedge block 9 and extending into one end of the first composite plate 1; the outer side of the first piston strip 11 is fitted into the sealing groove 12 opened inside the first composite plate 1; one side of the first piston strip 11 is connected to the inner wall of the sealing groove 12 through a guide member 13; the sealing groove 12 is further connected to a first air supply pipe 14 at one end away from the first piston strip 11; the outer end of the first air supply pipe 14 is connected to the docking air cushion 7 on the right; the sealing mechanism also includes a second piston strip 15 fitted into one end of the positioning plate 4 extending into the docking groove 6; the second piston strip 15 The other end of 15 is connected to the inner wall of the docking groove 6 through several groups of connecting springs 16. One end of the inner side of the docking groove 6 is also connected to a second air pipe 17, and the other end of the second air pipe 17 is connected to the docking air cushion 7 on the left; the outer wall of the second piston bar 15 is fitted against the inner wall of the docking groove 6, and the docking air cushions 7 on the left and right sides are made of elastic rubber; the guide member 13 is frame-shaped, and the inner wall of the guide member 13 is fitted against the outer wall of the first piston bar 11, and the first piston bar 11 forms a sliding structure with the inner wall of the sealing groove 12 through the guide member 13, and the interior of the sealing groove 12 and the docking groove 6 are filled with krypton gas.

[0034] When positioning and installing the first composite plate 1 and the second composite plate 2, first use a crane to lift the first composite plate 1 and the second composite plate 2 through the hook 3. After the first composite plate 1 and the second composite plate 2 are lifted to the specified position, it is necessary to ensure that the positioning plate 4 set on one side of the first composite plate 1 and the docking groove 6 opened on one side of the second composite plate 2 are in the same position, and then move the first composite plate 1 or the second composite plate 2 horizontally so that the positioning plate 4 is embedded in the inside of the docking groove 6, and two docking air cushions 7 close to each other are also required. When the first and second laminated plates 1 and 2 are fitted together, the purpose of positioning the first and second laminated plates 1 and 2 is completed. Subsequently, when the positioning plate 4 is moved to a certain position, the threaded bolt 8 is rotated by using a wrench, and the threaded bolt 8 can be driven by the threaded embedded wedge 9 to descend inside the first laminated plate 1. The embedded wedge 9 is set as an inclined surface on one side, and the embedded wedge 9 can be driven to move the positioning plate 4. When the positioning plate 4 moves to the right, the positioning plate 4 will also drive the first piston bar 11 to slide in the internal position of the sealing groove 12, and The first piston bar 11 is stably guided and moved by the guide member 13 provided. At this time, the first piston bar 11 transports the gas inside the sealing groove 12 to the inside of the docking air cushion 7 through the first air supply pipe 14 during the movement, thereby causing the docking air cushion 7 to expand. In addition, after the positioning plate 4 is embedded in the docking groove 6, the second piston bar 15 inside the docking groove 6 will also move, causing the second piston bar 15 to move through the connecting spring 16, causing the gas inside the second piston bar 15 to be stably transported through the second air supply pipe 17. Since the pressure of the two-way check valve inside the third air supply pipe 18 is greater than the elastic force of the docking air cushion 7, the gas is preferentially transported to the inside of the docking air cushion 7 at this time, thereby causing the docking air cushion 7 to expand. When the left and right groups of docking air cushions 7 are expanded, the docking position of the first composite plate 1 and the second composite plate 2 can be fully filled and the position can be sealed to avoid damage caused by human trampling in the later stage. Through the above settings, the phenomenon of water seepage at the connection in the later stage can be avoided.

[0035] Example 2: In order to solve the problem that the top surface needs to have a certain slope during docking, please refer to the attached Figure 1 , Attachment Figure 5 , Attachment Figure 8 and attached Figure 9Fiber reinforced composite materials can be used inside the first and second laminated panels 1 and 2. A lifting mechanism is provided at the inner center of the first and second laminated panels 1 and 2, and the lifting mechanism can slightly lift the center of the top surface of the first and second laminated panels 1 and 2 to prevent water from accumulating at the top of the first and second laminated panels 1 and 2; the lifting mechanism includes a third air pipe 18 connected to the inner middle of the docking groove 6, and the other end of the third air pipe 18 is forked and connected to the middle of several groups of lifting members 19, and the upper and lower ends of the lifting members 19 are fixed. It is fixed in the sliding receiving groove 20 opened on the inner wall of the first composite plate 1; the lifting member 19 includes a vertical tube 1901 and a longitudinal rod 1902, the inner side of the vertical tube 1901 is slidingly provided with the longitudinal rod 1902, and the bottom position of the longitudinal rod 1902 is also fixed with a fitting pad 1903, and the bottom of the fitting pad 1903 is connected to the inner wall of the vertical tube 1901 through a matching spring 1904; the internal two-way check valve of the third air supply pipe 18, and the elastic force of the two-way check valve is greater than the elastic force of the docking air cushion 7.

[0036] When the gas is delivered to the interior of the docking air cushion 7, the pressure continues to increase, causing the check valve to be in an open state. At this time, the gas is delivered through the third gas pipe 18, and then the gas is delivered to the interior of the lifting member 19. When the gas fills the interior of the vertical pipe 1901 and the longitudinal rod 1902, the longitudinal rod 1902 will move through the fitting pad 1903, causing the fitting pad 1903 to drive the matching spring 1904 to deform, and then the top of the longitudinal rod 1902 can be pressed against the inside of the first composite plate 1. At this time, the center of the top surface of the first composite panel 1 can be slightly lifted, and then a certain curvature can be achieved on the top of the first composite panel 1 (the curvature range is about 2°, to ensure that water does not accumulate on the top surface and can be discharged through the drain on the roof), to prevent water accumulation on the top of the first composite panel 1. In addition, through the setting of krypton gas, first of all, through its own characteristics, the problem of larger lifting curvature due to thermal expansion and contraction is avoided. In addition, krypton gas has good thermal insulation performance, which avoids heat transfer.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fast assembly and locking structure for laminated panels, comprising a first laminated panel (1) and a second laminated panel (2) that are spliced together, wherein hooks (3) for handling are fixed at the corners around the top of the first laminated panel (1) and the second laminated panel (2); characterized in that: A positioning plate (4) is slidably provided inside the right side of the first laminated plate (1), and docking air cushions (7) are provided on both the left and right sides of the first laminated plate (1) and the second laminated plate (2). A group of matching holes (5) for moving the positioning plate (4) are excavated in the center of the surface of the docking air cushion (7), and a docking groove (6) is also provided at one end of the first laminated plate (1) away from the positioning plate (4); A positioning mechanism is also provided at the top of the first laminated plate (1) near the top of the docking groove (6), and the positioning mechanism is provided to achieve a seamless connection between the first laminated plate (1) and the second laminated plate (2); A lifting mechanism is provided at the inner center position of each of the first and second laminated plates (1) and (2), and the lifting mechanism enables the center of the top surface of the first and second laminated plates (1) and (2) to be slightly lifted to avoid water accumulation at the top position of the first and second laminated plates (1) and (2).

2. A fast assembly and locking structure for laminated panels according to claim 1, characterized in that: The positioning mechanism includes a rotating threaded bolt (8) rotatably arranged on the top of the first composite plate (1), and the outer side of the bottom of the rotating threaded bolt (8) is threadedly connected to the inside of the embedded wedge (9), the outer side of the embedded wedge (9) is slidably arranged inside the first composite plate (1), and the bottom position of the embedded wedge (9) extends into the inside of the docking groove (6). The bottom of the embedded wedge (9) and the embedded hole (10) are in the same vertical line. By squeezing the embedded hole (10) by the embedded wedge (9), the positioning plate (4) moves toward the inside of the docking groove (6), thereby realizing a tight splicing between the first composite plate (1) and the second composite plate (2).

3. The fast assembly and locking structure of laminated panels according to claim 2, characterized in that: The shape of the embedded wedge block (9) is square, and the bottom surface of the embedded wedge block (9) is inclined. The movement of the embedded wedge block (9) realizes the operation of the sealing mechanism inside the first laminated plate (1) and the second laminated plate (2).

4. The fast assembly and locking structure of laminated panels according to claim 3, characterized in that: The sealing mechanism includes a first piston bar (11) embedded in a wedge block (9) and extending into one end of the first composite plate (1). The outer side of the first piston bar (11) is fitted into a sealing groove (12) provided in the first composite plate (1). One side of the first piston bar (11) is connected to the inner wall of the sealing groove (12) via a guide member (13). The sealing groove (12) is also connected to a first air supply pipe (14) at one end away from the first piston bar (11). The outer end of the first air supply pipe (14) is connected to the docking air cushion (7) on the right side.

5. The fast assembly and locking structure of laminated panels according to claim 4, characterized in that: The sealing mechanism further comprises a second piston bar (15) which is attached to one end of the positioning plate (4) extending into the interior of the docking groove (6); the other end of the second piston bar (15) is connected to the inner wall of the docking groove (6) via a plurality of groups of connecting springs (16); one end of the inner side of the docking groove (6) is also connected to a second air supply pipe (17); the other end of the second air supply pipe (17) is connected to the docking air cushion (7) on the left side.

6. The fast assembly and locking structure of laminated panels according to claim 5, characterized in that: The outer wall of the second piston strip (15) is fitted on the inner wall of the docking groove (6), and the docking air cushions (7) on the left and right sides are both made of elastic rubber material.

7. The fast assembly and locking structure of laminated panels according to claim 4, characterized in that: The guide member (13) is shaped like a frame, and the inner wall of the guide member (13) is positioned to fit the outer wall of the first piston strip (11). The first piston strip (11) forms a sliding structure between the guide member (13) and the inner wall of the sealing groove (12). The interiors of the sealing groove (12) and the docking groove (6) are both filled with krypton gas.

8. The fast assembly and locking structure of laminated panels according to claim 1, characterized in that: The lifting mechanism includes a third air pipe (18) connected to the middle position of the inner side of the docking groove (6), the other end of the third air pipe (18) is forked and connected to the middle position of a plurality of groups of lifting members (19), and the upper and lower ends of the lifting members (19) are fixed in the sliding receiving groove (20) opened on the inner wall of the first composite plate (1).

9. The fast assembly and locking structure of laminated panels according to claim 8, characterized in that: The lifting member (19) includes a vertical tube (1901) and a longitudinal rod (1902). The longitudinal rod (1902) is slidably arranged on the inner side of the vertical tube (1901), and a fitting pad (1903) is fixed at the bottom position of the longitudinal rod (1902). The bottom of the fitting pad (1903) is connected to the inner wall of the vertical tube (1901) through a matching spring (1904).

10. The fast assembly and locking structure of laminated panels according to claim 8, characterized in that: The third air delivery pipe (18) has an internal two-way check valve, and the elastic force of the two-way check valve is greater than the elastic force of the docking air cushion (7).

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