A prefabricated balcony structure and its construction method

Abstract

This application discloses a prefabricated balcony structure and its construction method, belonging to the field of prefabricated buildings. It includes a base slab and a floor slab connected to the base slab. A plurality of connecting rods for connecting to the base slab are slidably disposed on the floor slab. The base slab has a first connecting groove for inserting and engaging with the connecting rods. A first railing plate and a second railing plate are disposed on the base slab, both of which are inserted and engaged with the base slab. An insertion block is disposed on the side wall of the second railing plate near the first railing plate. An insertion groove is disposed on the first railing plate for inserting and engaging with the insertion block. A first driving assembly for driving the connecting rods to move is disposed on the floor slab. This application improves the safety of balcony structure installation and enhances the connection stability between the installed structure and the floor slab.

Description

Technical Field

[0001] This application relates to the field of prefabricated buildings, and in particular to a prefabricated balcony structure and its construction method. Background Technology

[0002] Prefabricated buildings refer to buildings where a large amount of on-site work in traditional construction methods is transferred to factories. Building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in factories, transported to the construction site, and assembled and installed on-site using reliable connection methods.

[0003] In related technologies, Chinese invention patent CN111636553A discloses a prefabricated balcony structure and construction process. The structure includes a prefabricated body, which comprises a rectangular base plate surrounded by side plates on three sides. It also includes telescopic connectors mounted on the main building structure. A first connecting groove is formed on the upper end of the base plate facing its thickness direction, extending from the middle of the base plate towards its width. The lower end of the first connecting groove connects to a slot extending towards the length of the base plate. Multiple slots and the first connecting groove are spaced apart along the length of the base plate. The telescopic connector is a rod facing the width direction of the base plate, with one end always located within the floor slab and connected to a limiting mechanism. When one end of the telescopic connector extends out of the floor slab, it enters the slot, allowing the prefabricated body to be suspended from the building facade. This invention allows the prefabricated balcony to be connected to the main building structure only after the main building construction is completed, facilitating the construction of the building's exterior facade using a suspended platform.

[0004] Regarding the aforementioned technologies, the inventors believe that in a prefabricated balcony structure and construction process, when operators connect the floor slab and the base slab together using telescopic connectors, the telescopic connectors cannot guarantee the stability of the connection between the base slab and the floor slab when the base slab is under heavy load. At the same time, when operators install the base slab using hoisting rods and hoisting rings, the base slab may shift due to wind force, posing a certain safety hazard. Summary of the Invention

[0005] To improve the safety of balcony structure installation and the stability of the connection between the installation structure and the floor slab, this application provides a prefabricated balcony structure and its construction method.

[0006] The prefabricated balcony structure provided in this application adopts the following technical solution:

[0007] A prefabricated balcony structure includes a base plate and a floor slab connected to the base plate. A plurality of connecting rods for connecting to the base plate are slidably disposed on the floor slab. The base plate has a first connecting groove for inserting into the connecting rods. A first railing plate and a second railing plate are disposed on the base plate, both of which are inserted into the base plate. An insertion block is disposed on the side wall of the second railing plate near the first railing plate. An insertion groove is disposed on the first railing plate for inserting into the insertion block. A first driving assembly for moving the connecting rods is disposed on the floor slab. A fixing assembly for fixing the connecting rods is disposed on the base plate. An installation assembly for facilitating the movement of the base plate is disposed on the floor slab.

[0008] By adopting the above technical solution, when assembling the balcony, the operator first determines the number of base plates to be installed and the location of the floor slab. The operator then uses the installation components to install the base plates sequentially on the floor slab from top to bottom. When connecting the base plates to the floor slab, the connecting rod on the floor slab is aligned with the first connecting groove on the base plate. The first drive component drives the connecting rod to move, causing the connecting rod to insert into the first connecting groove. At the same time, the operator uses the fixing component to fix the connecting rod inside the base plate. After the base plate is fixed, there is a certain height difference between the base plate and the floor slab. The operator can cover the top of the floor slab and the space between the floor slab and the base plate with concrete or flooring to improve the stability and sealing of the connection between the floor slab and the base plate. The operator then installs the first railing plate and the second railing plate onto the base plate. After the individual base plates are installed, the operator installs the base plates sequentially on the floor slab from top to bottom. By setting up the fixing component and the installation component, the fixing component can improve the stability of the connection between the connecting rod and the base plate, while the installation component facilitates the operator's installation of the base plates and improves safety.

[0009] Preferably, the first drive assembly includes a first lead screw, which passes through the floor slab and is rotatably connected to the floor slab. The first lead screw is inserted into the connecting rod and is threadedly engaged with the connecting rod. A worm gear is fixedly sleeved on the end of the first lead screw away from the connecting rod. A worm is rotatably mounted on the floor slab, and the worm and the worm gear mesh with each other.

[0010] By adopting the above technical solution, after the base plate moves to the floor position under the action of the installation components, the operator rotates the worm gear. The rotation of the worm gear causes the worm wheel to rotate, which in turn causes the first lead screw to rotate. The rotation of the first lead screw causes the connecting rod to move and insert into the first connecting groove on the base plate, thus connecting the base plate to the floor.

[0011] Preferably, a handwheel that is convenient for the operator to rotate is slidably mounted on the worm gear, a limit block is fixedly connected to the handwheel shaft, and a limit groove is provided on the inner side wall of the worm gear for sliding cooperation with the limit block.

[0012] By adopting the above technical solution, when the operator needs to rotate the worm gear, he inserts the limit block on the handwheel into the limit groove, and removes the handwheel after the worm gear has finished rotating, which prevents accidental contact and provides convenience for pouring concrete or setting up a waterproof layer.

[0013] Preferably, the fixing component includes a limiting block that slides through the inner wall of the first connecting groove. The connecting rod has a second connecting groove for engaging with the limiting block. A slide block is fitted onto the limiting block, and a first sliding groove is formed inside the slide block for sliding cooperation with the limiting block. A first return spring is fixedly connected to the limiting block, and the end of the first return spring away from the limiting block is fixedly connected to the inner wall of the first sliding groove. A second driving component for driving the slide block to move is provided on the base plate.

[0014] By adopting the above technical solution, when the connecting rod is inserted into the first connecting groove, the second drive assembly drives the slide to move. The movement of the slide causes the limiting block to move. The limiting block moves and inserts into the second connecting groove on the connecting rod, preventing the connecting rod from detaching from the base plate due to unknown circumstances. During the process of the second drive assembly driving the slide to move, the limiting block first abuts against the connecting rod, and the limiting block compresses the first return spring. When the limiting block corresponds to the second connecting groove, the first return spring pushes the limiting block to insert into the second connecting groove.

[0015] Preferably, the second drive assembly includes a second lead screw and a first spur gear. The second lead screw passes through the base plate and is rotatably connected to the base plate. The second lead screw passes into the slide block and is threadedly engaged with the slide block. The first spur gear is fixedly sleeved on the end of the second lead screw away from the slide block. A third drive assembly for driving the first spur gear to rotate is provided inside the base plate.

[0016] By adopting the above technical solution, during the process of inserting the connecting rod into the first connecting groove, the third drive component drives the first spur gear to rotate, the rotation of the first spur gear causes the second lead screw to rotate, the rotation of the second lead screw causes the slide to move, and the movement of the slide causes the limiting block to move toward the position of the connecting rod.

[0017] Preferably, the third drive assembly includes a first rack and a second rack, both of which are slidably disposed within the base plate. The first rack is capable of abutting against the connecting rod, and the second rack meshes with the first spur gear. A drive shaft is disposed within the base plate and is rotatably connected to the base plate. A second spur gear and a third spur gear are fixedly sleeved on the drive shaft. The second spur gear meshes with the first rack, and the third spur gear meshes with the second rack.

[0018] By adopting the above technical solution, when the connecting rod moves deeper into the first connecting groove, the connecting rod contacts the first rack. The connecting rod continues to move, causing the first rack to move. The movement of the first rack causes the second spur gear to rotate. The rotation of the second spur gear causes the drive shaft to rotate. The rotation of the drive shaft causes the third spur gear to rotate. The rotation of the third spur gear causes the second rack to move. The movement of the second rack causes the first spur gear to rotate. The rotation of the first spur gear causes the second lead screw to rotate. The rotation of the second lead screw causes the slide to move. The movement of the slide causes the limiting block to move towards the position of the connecting rod. At this time, the limiting block first abuts against the connecting rod. After the connecting rod reaches the designated position, the limiting block is inserted into the second connecting groove under the action of the first return spring, preventing the connecting rod from detaching from the base plate.

[0019] Preferably, a fixing screw is slidably provided on the base plate, and the fixing screw is sequentially inserted into the second connecting groove and the limiting block, and the fixing screw can be threadedly engaged with the limiting block.

[0020] By adopting the above technical solution, after the limiting block is inserted into the second connecting groove on the connecting rod, the operator inserts the fixing screw into the second connecting groove and connects the fixing screw to the limiting block, preventing the limiting block from detaching from the second connecting groove for unknown reasons, and further improving the stability of the connection between the connecting rod and the base plate.

[0021] Preferably, an auxiliary support frame is provided on the floor slab, the auxiliary support frame can abut against the base plate, and a third connecting groove is provided on the floor slab for inserting and engaging with the auxiliary support frame.

[0022] By adopting the above technical solution, after the base plate and floor slab are connected, the auxiliary support frame is used to support the base plate and improve its stability.

[0023] Preferably, the installation assembly includes a support plate for moving the base plate and a support base on which a winch is provided. The support plate is provided with an auxiliary wheel, and the support base has a second sliding groove for sliding cooperation between the support plate and the auxiliary wheel. The winch is connected to the support plate.

[0024] By adopting the above technical solution, when moving the base plate, the operator first moves the base plate to the support plate and drives the support plate to move by a winch. The auxiliary wheels and the second slide groove are used to improve the stability of the support plate during movement. After the base plate is fully installed, the operator removes the support base and auxiliary wheels. Compared with ordinary hoisting devices, the auxiliary wheels and the second slide groove on the support base improve safety to a certain extent while improving work efficiency and reducing the impact of wind.

[0025] This application also provides a construction method for a prefabricated balcony structure, employing the following technical solution:

[0026] S1. Determine the number of floor slabs and base slabs, and install support bases on both sides of the floor slabs;

[0027] S2. Transfer the base plate to the support plate, and use a winch to move the support plate to the highest floor slab position;

[0028] S3. Insert the connecting rod on the floor slab into the connecting groove on the floor slab using the first drive assembly;

[0029] S4. Connect the fixing screw to the limiting block;

[0030] S5. Install the first and second railings;

[0031] S6. Install the base plates sequentially from top to bottom;

[0032] S7. Pour concrete on the floor slab to make the base slab flush with the poured floor slab, and perform waterproofing treatment between the floor slab and the base slab.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. By setting up fixing components and mounting components, the fixing components can improve the stability of the connection between the connecting rod and the base plate, while the mounting components facilitate the operator's installation of the base plate and improve safety;

[0035] 2. By setting a limiting block and a fixing screw, after the limiting block is inserted into the second connecting groove on the connecting rod, the operator inserts the fixing screw into the second connecting groove and connects the fixing screw to the limiting block to prevent the limiting block from coming out of the second connecting groove for unknown reasons, thereby further improving the stability of the connection between the connecting rod and the base plate;

[0036] 3. By setting up auxiliary support frames, after the base plate is connected to the floor slab, the auxiliary support frames are used to support the base plate and improve its stability. Attached Figure Description

[0037] Figure 1This is a structural schematic diagram of a prefabricated balcony structure according to an embodiment of this application.

[0038] Figure 2 This is a structural schematic diagram of the floor slab according to an embodiment of this application.

[0039] Figure 3 This is a schematic diagram of the structure of the first driving component according to an embodiment of this application.

[0040] Figure 4 yes Figure 3 A schematic diagram of the structure at point A in the middle.

[0041] Figure 5 yes Figure 3 A schematic diagram of the structure at point B.

[0042] Figure 6 yes Figure 3 A schematic diagram of the structure at point C.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Base plate; 11. Connecting rod; 111. First connecting groove; 12. First railing plate; 13. Second railing plate; 14. Insertion block; 15. Fixing screw; 16. Auxiliary support frame; 2. Floor slab; 3. First drive assembly; 31. First lead screw; 32. Worm gear; 33. Worm; 34. Handwheel; 35. Limiting block; 351. Limiting groove; 4. Fixing assembly; 41. Limiting block; 411. Second connecting groove; 42. Slide; 43. First return spring; 44. Second lead screw; 45. First spur gear; 46. First rack; 47. Second rack; 48. Drive shaft; 481. Second spur gear; 482. Third spur gear; 5. Mounting assembly; 51. Support plate; 52. Winch; 53. Support base; 531. Second slide groove. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0046] This application discloses a prefabricated balcony structure. (Refer to...) Figure 1 A prefabricated balcony structure includes a base slab 1 and a floor slab 2.

[0047] Reference Figure 1 as well as Figure 2Several floor slabs 2 are horizontally arranged, and several floor slabs 2 are spaced vertically. A base plate 1 abuts against the floor slabs 2, and the top surface of the base plate 1 is higher than the top surface of the floor slabs 2. An installation assembly 5 is provided on the floor slabs 2, including a support plate 51 and a support base 53. Two support bases 53 are vertically arranged, one on each side of the floor slab 2, with the bottom surface of the base plate 1 abutting against the top surface of the support plate 51. After the base plate 1 is fixed, there is a certain height difference between the base plate 1 and the floor slabs 2. Operators can cover the top of the floor slabs 2 and the space between the floor slabs 2 and the base plate 1 with concrete or flooring to improve the stability and sealing of the connection between the floor slabs 2 and the base plate 1.

[0048] Reference Figure 1 as well as Figure 2 One end of the support plate 51 is inserted into a support base 53, and the other end of the support plate 51 is inserted into another support base 53. A second groove 531 is formed along the length of each support base 53. An auxiliary wheel is provided on the end of the support plate 51 located within the second groove 531. Both the support plate 51 and the auxiliary wheel slide against the inner wall of the second groove 531. A winch 52 is provided at the top of each of the two support bases 53, and both winches 52 are connected to the top surface of the support plate 51.

[0049] Reference Figure 1 as well as Figure 2 When moving the base plate 1, the operator first moves the base plate 1 onto the support plate 51 and drives the support plate 51 to move using the winch 52. The auxiliary wheels and the second slide groove 531 are used to improve the stability of the support plate 51 during movement. After the base plate 1 is fully installed, the operator removes the support base 53 and the auxiliary wheels. Compared with ordinary hoisting devices, the auxiliary wheels and the second slide groove 531 on the support base 53 improve safety while increasing work efficiency and reducing the impact of wind.

[0050] Reference Figure 2 A first railing plate 12 and a second railing plate 13 are provided on the base plate 1, and both the first railing plate 12 and the second railing plate 13 are interlocked with the base plate 1. The first railing plate 12 is located on the top surface of the base plate 1 away from the floor slab 2. There are two second railing plates 13, which are symmetrically arranged along the axis of the base plate 1. Each of the two second railing plates 13 has an interlocking block 14 at its end near the first railing plate 12. The end of the first railing plate 12 near the second railing plate 13 has an interlocking groove along its height direction. The interlocking block 14 interlocks with the interlocking groove, and the interlocking block 14 corresponds to the interlocking groove one-to-one. The interlocking block 14 and the interlocking groove can help operators quickly install the first railing plate 12 and the second railing plate 13 and improve their stability.

[0051] Reference Figure 2 as well as Figure 3A connecting rod 11 is installed on the floor slab 2, with three connecting rods 11 installed on a single floor slab 2, spaced apart along the length of the floor slab 2. A first driving assembly 3 is installed on the floor slab 2, including a first lead screw 31. The first lead screw 31 is horizontally installed inside the floor slab 2. One end of the first lead screw 31 is rotatably connected to the floor slab 2, and the other end of the first lead screw 31 is inserted into the connecting rod 11. The first lead screw 31 and the connecting rod 11 are threadedly engaged, and there is a one-to-one correspondence between the first lead screw 31 and the connecting rod 11.

[0052] Reference Figure 3 as well as Figure 4 A worm gear 32 is fixedly sleeved on the end of the first lead screw 31 away from the connecting rod 11. A worm 33 is vertically inserted into the floor slab 2 and is rotatably connected to the floor slab 2. The worm 33 and the worm gear 32 mesh with each other. A handwheel 34 is provided at the top of the worm 33 and is inserted into the worm 33. A limit block 35 is provided on the end of the handwheel 34 located inside the worm 33. A limit groove 351 is opened in the worm 33 along its length direction. The limit block 35 slides and engages with the inner wall of the limit groove 351.

[0053] When the base plate 1 moves to the floor slab 2 position under the action of the mounting component 5, the operator rotates the worm gear 33. The rotation of the worm gear 33 causes the worm wheel 32 to rotate, the rotation of the worm wheel 32 causes the first lead screw 31 to rotate, the rotation of the first lead screw 31 causes the connecting rod 11 to move, and the connecting rod 11 moves and inserts into the first connecting groove 111 on the base plate 1, connecting the base plate 1 and the floor slab 2.

[0054] When the worm gear 33 needs to be rotated, the operator inserts the limiting block 35 on the handwheel 34 into the limiting groove 351. After the worm gear 33 has finished rotating, the operator removes the handwheel 34 to prevent accidental contact and to facilitate the pouring of concrete or the installation of a waterproof layer.

[0055] Reference Figure 3 An auxiliary support frame 16 is installed on the side wall of the floor slab 2 near the base slab 1, with the top surface of the auxiliary support frame 16 abutting against the bottom surface of the base slab 1. Two auxiliary support frames 16 are installed on a single floor slab 2, symmetrically arranged along the axis of the floor slab 2. A third connecting groove is formed along the length of the floor slab 2, and the auxiliary support frame 16 is inserted into the third connecting groove. After the base slab 1 and the floor slab 2 are connected, the auxiliary support frame 16 is used to support the base slab 1, improving its stability.

[0056] Reference Figure 3 as well as Figure 5A fixing component 4 is provided on the base plate 1, and the fixing component 4 includes a limiting block 41. The base plate 1 has a first connecting groove 111 along its width direction, and the connecting rod 11 is inserted into the first connecting groove 111. The limiting block 41 is vertically inserted into the bottom surface of the first connecting groove 111, and three limiting blocks 41 are provided in a single first connecting groove 111. The bottom surface of the connecting rod 11 has a second connecting groove 411 along its height direction, and the limiting block 41 is inserted into the second connecting groove 411.

[0057] Reference Figure 3 as well as Figure 5 A fixing screw 15 is vertically inserted through the top surface of the base plate 1. The fixing screw 15 can pass through the first connecting groove 111 and the second connecting groove 411 in sequence and enter the limiting block 41. The fixing screw 15 and the limiting block 41 are threadedly engaged, and the fixing screw 15 and the limiting block 41 correspond one-to-one. After the limiting block 41 is inserted into the second connecting groove 411 on the connecting rod 11, the operator inserts the fixing screw 15 into the second connecting groove 411 and connects the fixing screw 15 to the limiting block 41 to prevent the limiting block 41 from disengaging from the second connecting groove 411 for unknown reasons, thereby further improving the stability of the connection between the connecting rod 11 and the base plate 1.

[0058] Reference Figure 3 as well as Figure 5 A slide block 42 is slidably sleeved on the end of the limiting block 41 away from the fixing screw 15. The slide block 42 has a first slide groove along its length. A first return spring 43 is fixedly connected to the limiting block 41. The end of the first return spring 43 away from the limiting block 41 is fixedly connected to the inner wall of the first slide groove.

[0059] Reference Figure 5 as well as Figure 6 A second drive assembly is provided on the base plate 1, which includes a second lead screw 44 and a first spur gear 45. The second lead screw 44 is vertically inserted into the base plate 1 and is rotatably connected to the base plate 1. The second lead screw 44 is inserted into the end of the slide block 42 away from the limiting block 41, and the second lead screw 44 is threadedly engaged with the slide block 42. The first spur gear 45 is fixedly sleeved on the end of the second lead screw 44 away from the slide block 42, and the first spur gear 45 corresponds one-to-one with the second lead screw 44.

[0060] Reference Figure 5 as well as Figure 6A third drive assembly is provided on the base plate 1, which includes a first rack 46 and a second rack 47. The first rack 46 is horizontally inserted through the inner end wall of the first connecting groove 111, and the first rack 46 slides in engagement with the inner side wall of the first connecting groove 111, allowing it to abut against the end of the connecting rod 11 near the base plate 1. The second rack 47 is slidably inserted through the base plate 1, and several first spur gears 45 at the bottom of each first connecting groove 111 correspond to a single second rack 47, with each of the first spur gears 45 meshing with its corresponding second rack 47. A drive shaft 48 is vertically inserted through the base plate 1 and is rotatably connected to the base plate 1. A second spur gear 481 is fixedly sleeved on the end of the drive shaft 48 near the first rack 46, and a third spur gear 482 is fixedly sleeved on the end of the drive shaft 48 away from the second spur gear 481. The first rack 46 meshes with the second spur gear 481, and the second rack 47 meshes with the third spur gear 482.

[0061] Reference Figure 3 , Figure 5 as well as Figure 6 As the connecting rod 11 moves deeper into the first connecting groove 111, it contacts the first rack 46. The connecting rod 11 continues to move, causing the first rack 46 to move. The movement of the first rack 46 causes the second spur gear 481 to rotate. The rotation of the second spur gear 481 causes the drive shaft 48 to rotate. The rotation of the drive shaft 48 causes the third spur gear 482 to rotate. The rotation of the third spur gear 482 causes the second rack 47 to move. The movement of the second rack 47 causes the first spur gear 45 to rotate. The rotation of the first spur gear 45 causes the second lead screw 44 to rotate. The rotation of the second lead screw 44 causes the slide 42 to move. The movement of the slide 42 causes the limiting block 41 to move toward the position of the connecting rod 11. At this time, the limiting block 41 first abuts against the connecting rod 11. After the connecting rod 11 reaches the designated position, the limiting block 41 is inserted into the second connecting groove 411 under the action of the first return spring 43 to prevent the connecting rod 11 from detaching from the base plate 1.

[0062] This application also discloses a construction method for a prefabricated balcony structure. The construction method for a prefabricated balcony structure includes the following steps:

[0063] S1. Determine the number of floor slabs 2 and bottom slabs 1, and install support seats 53 on both sides of floor slabs 2;

[0064] S2. Transfer the base plate 1 to the support plate 51, and move the support plate 51 to the highest floor slab 2 position using the winch 52.

[0065] S3. Insert the connecting rod 11 on the floor slab 2 into the connecting groove on the floor slab 1 through the first drive assembly 3;

[0066] S4. Connect the fixing screw 15 to the limiting block 41;

[0067] S5. Install the first and second railings;

[0068] S6. Install base plate 1 sequentially from top to bottom;

[0069] S7. Pour concrete on floor slab 2 so that bottom slab 1 is flush with the poured floor slab 2, and perform waterproofing treatment between floor slab 2 and bottom slab 1.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated balcony structure, characterized in that: The system includes a base plate (1) and a floor slab (2) connected to the base plate (1). The floor slab (2) has several connecting rods (11) slidably disposed on it for connecting to the base plate (1). The base plate (1) has a first connecting groove (111) for inserting into the connecting rods (11). The base plate (1) has a first railing plate (12) and a second railing plate (13), both of which are inserted into the base plate (1). A plug-in block (14) is provided on the side wall of the second railing plate (13) near the first railing plate (12). The first railing plate (12) is provided with a plug-in groove for plugging into the plug-in block (14). A first driving assembly (3) for driving the connecting rod (11) to move is provided on the floor slab (2). A fixing assembly (4) for fixing the connecting rod (11) is provided on the bottom plate (1). An installation assembly (5) for facilitating the movement of the bottom plate (1) is provided on the floor slab (2). The fixing component (4) includes a limiting block (41), which slides through the inner wall of the first connecting groove (111). The connecting rod (11) has a second connecting groove (411) for engaging with the limiting block (41). A slide block (42) is fitted on the limiting block (41). A first sliding groove for sliding cooperation with the limiting block (41) is opened in the slide block (42). A first return spring (43) is fixedly connected to the limiting block (41). The end of the first return spring (43) away from the limiting block (41) is fixedly connected to the inner wall of the first sliding groove. A second driving component for driving the slide block (42) to move is provided on the base plate (1). The second drive assembly includes a second lead screw (44) and a first spur gear (45). The second lead screw (44) passes through the base plate (1) and is rotatably connected to the base plate (1). The second lead screw (44) passes into the slide (42) and is threadedly engaged with the slide (42). The first spur gear (45) is fixedly sleeved on the end of the second lead screw (44) away from the slide (42). A third drive assembly for driving the first spur gear (45) to rotate is provided in the base plate (1). The third drive assembly includes a first rack (46) and a second rack (47), both of which are slidably disposed within the base plate (1). The first rack (46) is able to abut against the connecting rod (11), and the second rack (47) meshes with the first spur gear (45). A drive shaft (48) is disposed within the base plate (1) and is rotatably connected to the base plate (1). A second spur gear (481) and a third spur gear (482) are fixedly sleeved on the drive shaft (48). The second spur gear (481) meshes with the first rack (46), and the third spur gear (482) meshes with the second rack (47).

2. The prefabricated balcony structure according to claim 1, characterized in that: The first drive assembly (3) includes a first lead screw (31), which is mounted on the floor slab (2) and rotatably connected to the floor slab (2). The first lead screw (31) is inserted into the connecting rod (11) and threadedly engaged with the connecting rod (11). A worm gear (32) is fixedly sleeved on the end of the first lead screw (31) away from the connecting rod (11). A worm (33) is rotatably mounted on the floor slab (2), and the worm (33) meshes with the worm gear (32).

3. The prefabricated balcony structure according to claim 2, characterized in that: A handwheel (34) is slidably passed through the worm (33) for easy rotation by the operator. A limit block (35) is fixedly connected to the shaft of the handwheel (34). A limit groove (351) is provided on the inner side wall of the worm (33) for sliding cooperation with the limit block (35).

4. A prefabricated balcony structure according to claim 3, characterized in that: A fixing screw (15) is slidably passed through the base plate (1). The fixing screw (15) is sequentially inserted into the second connecting groove (411) and the limiting block (41). The fixing screw (15) can be threadedly engaged with the limiting block (41).

5. A prefabricated balcony structure according to claim 4, characterized in that: An auxiliary support frame (16) is provided on the floor slab (2), the auxiliary support frame (16) can abut against the bottom plate (1), and a third connecting groove is provided on the floor slab (2) for inserting and cooperating with the auxiliary support frame (16).

6. A prefabricated balcony structure according to claim 5, characterized in that: The installation assembly (5) includes a support plate (51) for moving the base plate (1) and a support base (53) on which a winch (52) is provided. The support plate (51) is provided with an auxiliary wheel, and the support base (53) is provided with a second sliding groove (531) for sliding cooperation between the support plate (51) and the auxiliary wheel. The winch (52) is connected to the support plate (51).

7. A construction method for a prefabricated balcony structure, based on the prefabricated balcony structure described in claim 6, characterized in that: Includes the following steps: S1. Determine the number of floor slabs (2) and bottom slabs (1), and install support bases (53) on both sides of the floor slabs (2); S2. Transfer the base plate (1) to the support plate (51), and move the support plate (51) to the highest floor slab (2) position using the winch (52); S3. Insert the connecting rod (11) on the floor slab (2) into the connecting groove on the bottom plate (1) through the first drive assembly (3); S4. Connect the fixing screw (15) to the limiting block (41); S5. Install the first and second railings; S6. Install the base plate (1) sequentially from top to bottom; S7. Pour concrete on the floor slab (2) so that the bottom slab (1) is flush with the poured floor slab (2), and perform waterproofing treatment between the floor slab (2) and the bottom slab (1).

Images