Large-span bracing-free laminated slab and construction device thereof

Abstract

The present application relates to the technical field of laminated slab construction, and particularly relates to a large-span support-free laminated slab and a construction device thereof. The large-span support-free laminated slab construction device comprises a guide rail assembly; the guide rail assembly is installed on the next layer plane of the construction layer of the frame; a lifting assembly is installed on the moving part of the guide rail assembly; the lifting plate of the lifting assembly is connected with a hoisting tool through a connecting assembly; the hoisting tool comprises an L-shaped frame body; a plurality of receiving rods are detachably connected to the L-shaped frame body; the receiving rods are used for avoiding the receiving rods; the end of the uppermost receiving rod is detachably connected with a first detachable hoisting piece; the top of the L-shaped frame body is detachably connected with a second detachable hoisting piece; the guide rail assembly, the lifting assembly and the hoisting tool are matched to realize the batch, continuous and automatic installation of the laminated slab, and manual assistance is not needed during the installation.

Description

Technical Field

[0001] This invention relates to the field of composite slab construction technology, and in particular to a large-span, support-free composite slab and its construction device. Background Technology

[0002] In existing technologies, the installation of large-span, support-free composite slabs involves hoisting them one by one from the ground to the installation location using cranes. Furthermore, multiple workers are required to assist with positioning and installation for each slab, resulting in a lack of continuity and low efficiency in the construction and installation process. To address this, this invention provides a large-span, support-free composite slab and its construction device. Summary of the Invention

[0003] In order to overcome the disadvantage of low construction efficiency of large-span unsupported composite slabs, this invention provides a large-span unsupported composite slab with multiple clearance openings on the truss.

[0004] Based on the above-mentioned large-span, supportless composite slab, the present invention also provides a construction device for large-span, supportless composite slab, including a guide rail assembly; the guide rail assembly is installed on the plane below the construction layer of the frame; a lifting assembly is installed on the moving part of the guide rail assembly, and the lifting plate of the lifting assembly is connected to a hoisting fixture through a connecting assembly; the hoisting fixture includes an L-shaped frame; multiple support rods are detachably connected to the L-shaped frame, and the clearance openings in the composite slab are used to avoid the support rods; a first detachable hoisting component is detachably connected to the end of the uppermost support rod; a second detachable hoisting component is detachably connected to the top of the L-shaped frame.

[0005] Furthermore, the connecting components include a guide plug and a recessed seat; the bottom of the L-shaped frame is fixedly connected to the guide plug; the lifting plate is fixedly connected to the recessed seat; the guide plug and the recessed seat are plugged into each other.

[0006] Furthermore, the length of the support rod is less than the width of the composite plate, and when the composite plate is placed on the support rod, the right side of the composite plate is flush with the right side of the support rod.

[0007] Furthermore, it also includes a vertical push rod; a vertical push rod is installed on the lifting plate; a connecting plate is fixedly connected to the telescopic part of the vertical push rod; an inclined push rod is installed on the connecting plate; a push plate is fixedly connected to the telescopic part of the inclined push rod, and the uppermost composite plate is pushed to the upper right by the push plate.

[0008] Furthermore, the upper surface of the push plate is roughened.

[0009] Furthermore, it also includes a vision module, which is installed on the side of the groove seat. The recognition area of ​​the vision module covers the protruding steel bars on the side of the composite plate. The groove seat is moved upward by the lifting component so that the recognition area of ​​the vision module covers the first support beam.

[0010] Furthermore, it also includes a horizontal push rod; the horizontal push rod is mounted on the side of the groove seat; the telescopic part of the horizontal push rod is fixed to a mounting plate; and a buffer release assembly for placing a buffer on the upper side of the first support beam is mounted on the mounting plate.

[0011] Furthermore, the buffer release assembly includes a feeding push rod and a fault flexible pad; the feeding push rod is installed on the mounting plate; multiple fault flexible pads are provided on the lower side of the mounting plate, and the fault flexible pads are released on the upper side of the first support beam by the feeding push rod. The buffer is a fault flexible pad, and the width of the fault flexible pad is smaller than the width of the first support beam.

[0012] Furthermore, an expansion airbag is provided at the end of the telescopic part of the feeding push rod; the faulty flexible pad is stacked and in contact with the upper and lower parts; the faulty flexible pad has a through hole that matches the expansion airbag; when the expansion airbag is inflated, the expansion airbag expands and supports the faulty flexible pad.

[0013] The present invention has the following advantages: The present invention can lift composite slabs in batches to the construction layer for construction using hoisting equipment, which significantly improves efficiency compared to the prior art which requires lifting composite slabs one by one; and the present invention can realize the batch continuous automated installation of composite slabs through the cooperation of guide rail components, lifting components and hoisting equipment, and no manual assistance is required during installation.

[0014] This invention places the guide rail assembly, lifting assembly, hoisting fixtures and other structures below the construction layer (or the structure can be moved to below the construction layer), which has stable support and does not affect the installation of the composite slab on the construction layer. The composite slab can be installed to cover the entire area, and installation and disassembly are convenient.

[0015] This invention achieves stable lifting of the composite plate while avoiding the second support beam by using a support rod with a length less than the width of the composite plate and by incorporating a vertical push rod, a connecting plate, an inclined push rod, and a push plate. This ensures that the lifting fixture can stably lift the composite plate while avoiding interference with the second support beam.

[0016] Before the composite slab is installed, this invention uses a vision module to pre-identify abnormalities in the flatness of the support beam and the bending of the reinforcing bars on the side of the composite slab. This allows for proactive handling of abnormal conditions, preventing installation misalignment of the composite slab due to reinforcing bar deformation or uneven support beams, thus eliminating safety risks. Furthermore, a faulty flexible pad is deployed using a push rod (inflatable airbag). The pad's thickness and deformability effectively offset installation misalignment caused by reinforcing bar bending, protrusions on the support beam surface, or foreign objects, ensuring the flatness and stability of the composite slab after installation. In addition, the width of the faulty flexible pad is smaller than the width of the support beam, reserving a suspended operating area on the front and rear sides of the installed composite slab, providing ample working space for subsequent processing such as reinforcing bar straightening and support beam flatness adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the composite plate and lifting fixture of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention when the first detachable lifting component and the second detachable lifting component are disassembled;

[0019] Figure 3 This is a schematic diagram of a scenario where the composite plate is installed according to the present invention;

[0020] Figure 4 for Figure 3 A schematic diagram of a partial structure;

[0021] Figure 5 This is a structural schematic diagram of the guide rail assembly, lifting assembly, connecting assembly, and hoisting fixture of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the guide block and the groove seat when they are connected according to the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the present invention when the second support beam on the left is present, showing the installation of the first composite plate;

[0024] Figure 8 This is a schematic diagram of the structure of the present invention when the second support beam on the right side is present, showing the installation of the last composite plate.

[0025] Figure 9 This is a schematic diagram of the structure of the vision module, horizontal push rod, mounting plate, material feeding push rod, and fault flexible pad of the present invention.

[0026] Figure 10 This is a cross-sectional view of the mounting plate and the fault flexible pad of the present invention.

[0027] The components in the diagram are labeled as follows: 1-Guide rail assembly, 2-Lifting assembly, 3-Connecting assembly, 4-Lifting fixture, 2a-Lifting plate, 31-Guide insert, 32-Groove seat, 41-L-shaped frame, 42-Supporting rod, 431-First detachable lifting component, 432-Second detachable lifting component, 51-Vertical push rod, 52-Connecting plate, 53-Angled push rod, 54-Push plate, 61-Vision module, 62-Horizontal push rod, 63-Mounting plate, 64-Unloading push rod, 65-Fault flexible pad, 64a-Inflatable airbag, 100-Layer plate, 100a-Allowing opening, 200-Frame, 200a-First support beam, 200b-Second support beam. Detailed Implementation

[0028] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In existing technologies, the installation of large-span, support-free composite slabs involves hoisting them one by one from the ground to the installation location using a crane. Furthermore, multiple workers are required to assist with positioning and installation for each slab, resulting in a lack of continuity and low efficiency in the construction and installation process. To address this, the present invention provides a large-span, support-free composite slab and its construction device.

[0030] Example 1: As Figures 1-10 As shown, a large-span, support-free composite slab is provided, wherein the truss of the large-span, support-free composite slab is provided with multiple clearance openings 100a. In an example of an embodiment of the present invention, the length of the composite slab spans three first support beams 200a.

[0031] Furthermore, the present invention also provides a construction device for large-span, support-free composite slabs, including a guide rail assembly 1, a lifting assembly 2, a connecting assembly 3, and a hoisting fixture 4;

[0032] The guide rail assembly 1 is installed on the plane below the construction layer of the frame 200; wherein, the construction layer is the plane on which the large-span unsupported composite slab needs to be installed, and the plane below is the ground or the poured cement surface; the moving part of the guide rail assembly 1 is equipped with a lifting assembly 2, and the lifting plate 2a of the lifting assembly 2 is connected to the hoisting fixture 4 through the connecting assembly 3.

[0033] The hoisting fixture 4 includes an L-shaped frame 41, a support rod 42, a first detachable hoisting component 431, and a second detachable hoisting component 432. Multiple support rods 42 are detachably connected to the L-shaped frame 41, supporting the composite slab 100. A clearance opening 100a in the composite slab 100 is provided to allow the support rods 42 to pass, thereby reducing the vertical height of the composite slabs 100 when stacked. The first detachable hoisting component 431 is detachably connected to the end of the uppermost support rod 42. The second detachable hoisting component 432 is detachably connected to the top of the L-shaped frame 41. The crane uses the first detachable hoisting component 431 and the second detachable hoisting component 432 to hoist the hoisting fixture 4 from the ground to the construction floor. After hoisting, the first detachable hoisting component 431 and the second detachable hoisting component 432 are disassembled.

[0034] like Figure 2 , Figure 6As shown, the connecting component 3 includes a guide plug 31 and a groove seat 32; the bottom of the L-shaped frame 41 is fixedly connected to the guide plug 31; the lifting plate 2a is fixedly connected to the groove seat 32; the guide plug 31 and the groove seat 32 are plugged into each other for adaptation.

[0035] like Figure 2 As shown, the length of the supporting rod 42 is less than the width of the composite plate 100. When the composite plate 100 rests on the supporting rod 42, the right side of the composite plate 100 is flush with the right side of the supporting rod 42; this allows the lower left side of the composite plate 100 to be suspended in the air, such as... Figure 7 As shown, when the first composite plate 100 is installed and there is a second support beam 200b on the left side, the lower left side of the composite plate 100 can be installed on the second support beam 200b without interference from the receiving rod 42.

[0036] It also includes a vertical push rod 51, a connecting plate 52, a diagonal push rod 53, and a push plate 54; the vertical push rod 51 is installed on the lifting plate 2a; the connecting plate 52 is fixedly connected to the telescopic part of the vertical push rod 51; the diagonal push rod 53 is installed on the connecting plate 52; the push plate 54 is fixedly connected to the telescopic part of the diagonal push rod 53, and the uppermost composite plate 100 is pushed to the upper right by the push plate 54; thus, the lower right side of the last composite plate 100 is suspended in the air, at which point the right side of the composite plate 100 extends beyond the L-shaped frame 41, such as... Figure 8 As shown, when the last composite plate 100 is installed, and there is a second support beam 200b on the right side, the lower right side of the composite plate 100 can be installed on the second support beam 200b without interference from the L-shaped frame 41.

[0037] The upper surface of the push plate 54 is roughened to prevent slippage when the laminated plate 100 comes into contact with the push plate 54.

[0038] When installing the large-span bracing-free composite slab (i.e., composite slab 100 in the figure, also referred to as composite slab in this article) on the construction layer of frame 200, the guide rail assembly 1 is installed on the plane below the construction layer of frame 200; wherein the construction layer is the plane on which the large-span bracing-free composite slab needs to be installed, and the plane below is the ground or the poured cement surface.

[0039] like Figure 1 As shown, the required number of composite slabs are placed from top to bottom in the hoisting fixture 4. The composite slabs 100 are supported by the support rods 42. The clearance openings 100a in the composite slabs 100 are used to avoid the support rods 42, thereby reducing the vertical height of the stacked composite slabs 100. The number of composite slabs 100 that the support rods 42 can support is not limited to the four shown in the figure, and the number of composite slabs placed can be less than the number that the support rods 42 can support. Then, the crane uses the first detachable hoisting component 431 and the second detachable hoisting component 432 to hoist the hoisting fixture 4 from the ground to the construction floor, as shown. Figure 6As shown, the guide block 31 is inserted into the groove seat 32, so that the hoisting fixture 4 is connected to the lifting assembly 2 through the connecting assembly 3. After the hoisting is completed, the first detachable hoisting component 431 and the second detachable hoisting component 432 are disassembled. The hoisting fixture 4 (overlapping plate 100) is driven to move left and right by the guide rail assembly 1 and to move up and down by the lifting assembly 2.

[0040] After that, as Figures 3-4 As shown, the hoisting fixture 4, carrying the composite slab, installs the composite slab onto the first support beam 200a sequentially from left to right on the construction floor. Specifically, the guide rail assembly 1 moves the hoisting fixture 4 (composite slab 100) to the installation position of the first support beam 200a. Then, the lifting assembly 2 is controlled to move the hoisting fixture 4 (composite slab 100) downwards, so that the bottommost composite slab contacts the first support beam 200a, while the lower side of the composite slab disconnects from the receiving rod 42. Then, the guide rail assembly 1 is controlled to move the hoisting fixture 4 (composite slab 100) to the right to the next installation position, while the already installed composite slab 100 remains in place and does not move. This achieves automated installation of the composite slab, and the cooperation of the guide rail assembly 1, lifting assembly 2, and hoisting fixture 4 enables batch continuous automated installation of composite slabs. The lifting assembly 2 and hoisting fixture 4 are located in the middle of the two first support beams 200a.

[0041] In summary, the present invention can lift composite slabs in batches to the construction layer for construction using hoisting fixture 4, which significantly improves efficiency compared to the prior art that requires lifting composite slabs one by one. Furthermore, the present invention can achieve batch continuous automated installation of composite slabs through the cooperation of guide rail assembly 1, lifting assembly 2, and hoisting fixture 4, and no manual assistance is required during installation.

[0042] Meanwhile, the present invention sets the guide rail assembly 1, lifting assembly 2, hoisting fixture 4 and other structures below the construction layer (or the structures can be moved to the bottom of the construction layer), which has stable support and does not affect the installation of the composite plate on the construction layer. The composite plate can be installed to cover the entire area, and the installation and disassembly are convenient.

[0043] Furthermore, such as Figures 7-8 As shown, when facing the second support beam 200b, this invention achieves stable lifting of the composite plate 100 by making the length of the receiving rod 42 less than the width of the composite plate 100, and by providing a vertical push rod 51, a connecting plate 52, an inclined push rod 53, and a push plate 54, while avoiding interference between the lifting fixture 4 and the second support beam 200b. Specifically: Figure 7As shown, when the first composite plate 100 is installed facing the second support beam 200b on the left, because the length of the supporting rod 42 is less than the width of the composite plate 100, the lower left side of the composite plate 100 can be suspended, allowing the lower left side of the composite plate 100 to be installed on the second support beam 200b without interference from the supporting rod 42; Figure 8 As shown, when the last composite plate 100 is installed and there is a second support beam 200b on the right, the connecting plate 52, the inclined push rod 53 and the push plate 54 are pushed upward by the vertical push rod 51. Then, the uppermost composite plate 100 is pushed to the upper right by the inclined push rod 53, so that the lower right side of the composite plate 100 can be suspended. At this time, the right side of the composite plate 100 extends beyond the L-shaped frame 41. In this way, the lower right side of the composite plate 100 can be installed on the second support beam 200b without interference from the L-shaped frame 41.

[0044] In summary, by making the length of the receiving rod 42 less than the width of the composite plate 100, and by providing a vertical push rod 51, a connecting plate 52, an inclined push rod 53, and a push plate 54, the present invention enables the hoisting fixture 4 to stably hoist the composite plate 100 while avoiding the second support beam 200b, and the components of the hoisting fixture 4 do not interfere with each other.

[0045] Furthermore, such as Figure 9 As shown, it also includes a vision module 61, which is installed on the side of the groove seat 32. The recognition area of ​​the vision module 61 covers the protruding steel bars on the side of the composite plate 100. The groove seat 32 is moved upward by the lifting component 2 so that the recognition area of ​​the vision module 61 covers the first support beam 200a. The vision module 61 identifies whether the upper side of the first support beam 200a is abnormally flat and whether the protruding steel bars on the side of the composite plate 100 are abnormally bent.

[0046] It also includes a horizontal push rod 62, a mounting plate 63, and a buffer release assembly; the horizontal push rod 62 is mounted on the side of the groove seat 32; the extension part of the horizontal push rod 62 is fixedly connected to the mounting plate 63; the mounting plate 63 is equipped with a buffer release assembly for placing a buffer on the upper side of the first support beam 200a.

[0047] The buffer release assembly includes a discharge push rod 64 and a fault flexible pad 65; the discharge push rod 64 is installed on the mounting plate 63; multiple fault flexible pads 65 are provided on the lower side of the mounting plate 63, and the fault flexible pads 65 are released on the upper side of the first support beam 200a by the discharge push rod 64. The buffer is the fault flexible pad 65, and the width of the fault flexible pad 65 is smaller than the width of the first support beam 200a.

[0048] An expansion airbag 64a is provided at the end of the telescopic part of the feeding push rod 64; the fault flexible pad 65 is stacked and in contact with the upper and lower parts; the fault flexible pad 65 has a through hole that matches the expansion airbag 64a; when the expansion airbag 64a is inflated, the expansion airbag 64a expands and supports the fault flexible pad 65.

[0049] Furthermore, regarding the situation where the reinforcing bars on the front and rear sides of the composite slab 100 are abnormally bent (e.g., bent during transportation or hoisting), causing the composite slab 100 to be placed behind the first support beam 200a, the bent reinforcing bars will cause the composite slab 100 to tilt after placement, posing a safety hazard; or regarding the situation where the flatness of the upper side of the first support beam 200a is abnormal (e.g., the presence of protrusions or small stones), causing the composite slab 100 to tilt after placement, posing a safety hazard;

[0050] Before each installation of the composite plate 100 onto the first support beam 200a, the lifting assembly 2 is controlled to move the groove seat 32 upwards, so that the recognition area of ​​the vision module 61 covers the first support beam 200a. Simultaneously, the recognition area of ​​the vision module 61 also constantly covers the protruding reinforcing bars on the side of the composite plate 100. The vision module 61 identifies whether the upper side of the first support beam 200a has abnormal flatness and whether the protruding reinforcing bars on the side of the composite plate 100 are abnormally bent. When an abnormality is found, the telescopic part of the horizontal push rod 62 is extended, causing the faulty flexible pad 65 to move above the first support beam 200a. Figure 9 As shown, the lifting assembly 2 can then be controlled to move the groove seat 32 downwards, allowing the lowest faulty flexible pad 65 to contact and be supported by the first support beam 200a. Then, the inflatable airbag 64a is deflated, shrinking and no longer stuck in the through hole on the faulty flexible pad 65. Next, the telescopic part of the feeding push rod 64 is moved upwards, causing the inflatable airbag 64a to move into the through hole of the second lowest faulty flexible pad 65 and inflate again. This allows a faulty flexible pad 65 to be placed on the first support beam 200a to fill... The buffer layer between the composite slab and the first support beam 200a, because the fault flexible pad 65 has a certain thickness and can deform, can offset the abnormal bending of the reinforcing bars of the composite slab 100 and the abnormal flatness of the upper side of the first support beam 200a, so that the composite slab 100 will not be skewed after installation. Moreover, the width of the fault flexible pad 65 is smaller than the width of the first support beam 200a, that is, there is a suspended area on the front and rear sides of the composite slab 100 after installation. During subsequent repair, multiple people can lift or repair the composite slab 100 by hand or with tools through this suspended area.

[0051] In summary, before the composite slab 100 is installed, the present invention uses the vision module 61 to pre-identify abnormalities in the flatness of the support beam and abnormal bending of the side reinforcement bars of the composite slab 100, thus addressing abnormal conditions in advance and avoiding installation misalignment of the composite slab 100 caused by reinforcement deformation or uneven support beam, thereby eliminating safety risks. Furthermore, the invention uses the material pusher 64 (inflatable airbag 64a) to deploy a fault flexible pad 65. The pad's thickness and deformability effectively offset installation misalignment caused by reinforcement bending, surface protrusions of the support beam, or foreign objects, ensuring the flatness and stability of the composite slab 100 after installation. Additionally, the width of the fault flexible pad 65 is smaller than the width of the support beam, reserving a suspended operating area on the front and rear sides of the installed composite slab 100, providing ample working space for subsequent reinforcement correction and support beam flatness adjustments.

[0052] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A large-span, bracing-free composite slab, characterized in that, The truss of the large-span, supportless composite slab is provided with multiple clearance openings (100a).

2. A construction device for large-span, support-free composite slabs, using the large-span, support-free composite slab as described in claim 1, characterized in that... The system includes a guide rail assembly (1); the guide rail assembly (1) is installed on the plane below the construction layer of the frame (200); a lifting assembly (2) is installed on the moving part of the guide rail assembly (1), and the lifting plate (2a) of the lifting assembly (2) is connected to a hoisting fixture (4) through a connecting assembly (3); the hoisting fixture (4) includes an L-shaped frame (41); multiple support rods (42) are detachably connected to the L-shaped frame (41), and the clearance opening (100a) opened in the composite plate (100) is used to avoid the support rods (42); the end of the uppermost support rod (42) is detachably connected to a first detachable hoisting component (431); and the top of the L-shaped frame (41) is detachably connected to a second detachable hoisting component (432).

3. The construction device for large-span, support-free composite slabs according to claim 2, characterized in that, The connecting component (3) includes a guide plug (31) and a groove seat (32); the bottom of the L-shaped frame (41) is fixedly connected to the guide plug (31); the groove seat (32) is fixedly connected to the lifting plate (2a); the guide plug (31) and the groove seat (32) are plugged into each other.

4. The construction device for large-span, support-free composite slabs according to claim 2, characterized in that, The length of the support rod (42) is less than the width of the composite plate (100). When the composite plate (100) is placed on the support rod (42), the right side of the composite plate (100) is flush with the right side of the support rod (42).

5. The construction device for large-span, support-free composite slabs according to claim 4, characterized in that, It also includes a vertical push rod (51); a vertical push rod (51) is installed on the lifting plate (2a); a connecting plate (52) is fixed to the telescopic part of the vertical push rod (51); a diagonal push rod (53) is installed on the connecting plate (52); a push plate (54) is fixed to the telescopic part of the diagonal push rod (53), and the uppermost stacked plate (100) is pushed to the upper right by the push plate (54).

6. The construction device for large-span, support-free composite slabs according to claim 5, characterized in that, The upper surface of the push plate (54) is roughened.

7. The construction device for large-span, support-free composite slabs according to claim 6, characterized in that, It also includes a vision module (61), which is installed on the side of the groove seat (32). The recognition area of ​​the vision module (61) covers the protruding steel bars on the side of the composite plate (100). The groove seat (32) is moved upward by the lifting component (2) so that the recognition area of ​​the vision module (61) covers the first support beam (200a).

8. The construction device for large-span, support-free composite slabs according to claim 7, characterized in that, It also includes a horizontal push rod (62); the horizontal push rod (62) is mounted on the side of the groove seat (32); the telescopic part of the horizontal push rod (62) is fixedly connected to the mounting plate (63); the mounting plate (63) is equipped with a buffer release assembly for placing the buffer on the upper side of the first support beam (200a).

9. A construction device for large-span, support-free composite slabs according to claim 8, characterized in that, The buffer release assembly includes a discharge push rod (64) and a fault flexible pad (65); the discharge push rod (64) is installed on the mounting plate (63); multiple fault flexible pads (65) are provided on the lower side of the mounting plate (63), and the fault flexible pads (65) are released on the upper side of the first support beam (200a) by the discharge push rod (64). The buffer is the fault flexible pad (65), and the width of the fault flexible pad (65) is smaller than the width of the first support beam (200a).

10. A construction device for large-span, support-free composite slabs according to claim 9, characterized in that, An expansion airbag (64a) is provided at the end of the telescopic part of the feeding push rod (64); the fault flexible pad (65) is stacked and in contact with each other; the fault flexible pad (65) has a through hole that matches the expansion airbag (64a); when the expansion airbag (64a) is inflated, the expansion airbag (64a) expands and supports the fault flexible pad (65).

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