A template lifting and intercepting method for staircase flight adapted steel bars

Abstract

A template lifting and intercepting method for staircase flights adapted with steel bars, which relates to the technical field of building construction, includes the following steps: erect a scaffolding below the construction position of the intermediate platform, and form the intermediate platform at the top of the scaffolding; assemble the first staircase and the second staircase on the ground below the construction positions of the first staircase and the second staircase; set up a movable baffle at the lower one-third of the second staircase, and apply a demolding agent at the movable baffle; erect lifting devices at both ends of the construction positions of the first staircase and the second staircase, and clean up the construction waste in the template; use the lifting devices to lift the assembled first staircase and the second staircase to the construction positions for fixing; use grouting equipment to pour cement mortar from bottom to top and wait for it to solidify; after solidification, the movable baffle automatically separates, solving the problems of low efficiency in the existing secondary pouring method, and the construction process of the overall staircase being carried out in mid-air with limited working space and great operation difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a method for lifting and intercepting a formwork for stairs with steel bars adapted to the stair flight. Background Art

[0002] As an important component for vertical transportation between floors in a building, the history of stairs can be traced back to the image of multi-story buildings on bronze wares during the Warring States period in China. In Italy during the 15th to 16th centuries, indoor stairs gradually moved from enclosed spaces to open areas and became an important part of the building. In modern architecture, stairs are not only used for traffic connection between floors but also serve as an important escape route in high-rise buildings during fires.

[0003] In the existing cast-in-situ stair construction, generally, the overall scaffolding is first erected, and then the main keels are erected in sequence, the formwork is laid, and the steel bar mesh is tied. To ensure the construction quality, construction joints and wooden battens are also set according to the design requirements. When pouring concrete, secondary pouring is carried out with the construction joint as the boundary. Before the second pouring, the construction waste in the latter half of the formwork needs to be cleaned. After closing the construction joint, the pouring is continued until the wooden battens are removed and the subsequent plugging work is completed.

[0004] However, this construction method of secondary pouring not only has low efficiency but also has many inconveniences in operation. Since the entire stair construction process is carried out in mid-air, the working space for construction workers is limited, the operation difficulty is large, and the potential safety hazards are relatively high. Therefore, it is necessary to explore a more efficient and safe formwork support construction method for cast-in-situ stairs. Summary of the Invention

[0005] The embodiment of the present invention provides a method for lifting and intercepting a formwork for stairs with steel bars adapted to the stair flight. By pre-assembling the formwork of the stairs and tying the steel bar mesh on the ground and cleaning the assembled stairs, it is avoided that the structural strength is affected by construction waste during the subsequent grouting process. Further, a lifting device is erected between the ground, the intermediate platform, and the roof, and the assembled stairs are lifted to the target erection position for fixation, so as to perform one-time grouting and forming. The movable baffle can automatically drop the intercepting plate after a certain time through a timer to ensure the stress release after the concrete solidifies and forms. Finally, the formwork is removed, solving the problems of complex construction procedures and large operation difficulty in the existing stair construction.

[0006] A method for lifting and intercepting a formwork for stairs with steel bars adapted to the stair flight includes the following steps:

[0007] S1, Prepare the construction building materials for the first stair, the intermediate platform, and the second stair according to the construction drawings;

[0008] S2, Erector a scaffolding under the construction position of the intermediate platform and form the intermediate platform at the top of the scaffolding;

[0009] S3. Assemble the first staircase and the second staircase on the ground below the construction positions of the first staircase and the second staircase;

[0010] S4. Set up a movable partition board at the lower one-third of the second staircase, and apply a release agent at the movable partition board;

[0011] S5. Erect lifting devices at both ends of the construction positions of the first staircase and the second staircase, and clean up the construction waste in the formwork to keep the formwork clean;

[0012] S6. Use the lifting devices to lift the assembled first staircase and second staircase to the construction positions for fixation;

[0013] S7. Use grouting equipment to pour cement mortar from bottom to top and wait for it to solidify;

[0014] S8. After solidification, the movable partition board automatically separates, and then the formwork and scaffolding can be removed.

[0015] Furthermore, the intermediate platform includes two platform boards spliced together. The periphery of the platform boards is provided with I-beams. The bottom of the I-beams is fixed to the top of the scaffolding by bolts. The intermediate platform is the main stress platform connecting the first staircase and the second staircase. A formwork is assembled above the intermediate platform, and a steel bar mesh is tied in the formwork.

[0016] Furthermore, the first staircase includes a first support frame, which is formed by two first main keels arranged in parallel. A first docking plate and a second docking plate are respectively arranged at their relative positions. A first docking groove is opened at the center of the top of the first docking plate, and a second docking groove is opened at the center of the top of the second docking plate. Templates are arranged at the tops of the two first main keels. After the templates are fixed, a steel bar mesh is tied in the templates.

[0017] Furthermore, the second staircase includes a second support frame, which is formed by two second main keels arranged in parallel. A first docking plate and a second docking plate, which are the same as those of the first support frame, are respectively arranged at their relative positions. The same procedures as those of the first staircase are carried out for the top of the second support frame, that is, the laying of the formwork and the tying of the steel bar mesh. A barrier seam is opened at the lower one-third of the formwork.

[0018] Furthermore, the movable baffle plate includes a first mounting plate, an electric telescopic rod, and an interception plate. The first mounting plate is fixedly arranged on the side of the second staircase near the blocking seam. The electric telescopic rod is fixed on the first mounting plate. The interception plate is movably arranged in the opening direction of the blocking seam. A connecting arm is vertically arranged at the end of the output shaft of the electric telescopic rod. The top of the connecting arm is arranged together with the bottom of the mounting plate. A slide rail is arranged at one end of the interception plate away from the electric telescopic rod in the length direction. A second mounting plate is arranged at the second main keel near the slide rail. A limiting block is arranged on the second mounting plate. The slide rail is slidably arranged on the limiting block.

[0019] Furthermore, a plurality of movable grooves are formed at the top of the interception plate, and a protruding portion extending outward is arranged at the bottom of the interception plate. When the electric telescopic rod is fully retracted, the protruding portion abuts against the bottom of the second staircase. At this time, the interception plate has no contact with the steel mesh inside the second staircase. When the electric telescopic rod is fully extended, the top of the interception plate is located below the blocking seam.

[0020] Furthermore, a timer is arranged on the first mounting plate, and the timer is electrically connected to the electric telescopic rod.

[0021] Furthermore, the lifting device includes a bottom fixing plate. An installation frame and a square pipe are arranged at the top of the bottom fixing plate. A top plate is arranged at the top of the square pipe. A transmission component is arranged at the intersection of the square pipe and the installation frame. A lifting hook is arranged on the transmission component. The lifting hook is used to hook the docking plates on the first support frame and the second support frame. The height of the lifting device has two different specifications. One is used for setting between the ground and the intermediate platform, and the other is set between the ground and the roof.

[0022] Furthermore, the transmission component includes a first gear fixing plate arranged at the intersection of the installation frame and the square pipe. A first transmission gear is arranged at this position. A second gear fixing plate is arranged at the intersection of the square pipe and the top plate. A second transmission gear is arranged at this position. A transmission belt is arranged between the two gears. A driving motor is arranged on the installation frame, and the output shaft of the driving motor is arranged together with the first transmission gear.

[0023] Furthermore, the lifting hook includes a slider slidably arranged on the square pipe. A plurality of rollers are arranged inside the slider. The rollers are in contact with the square pipe. First docking pipes and second docking pipes are symmetrically arranged outside the slider. The first docking pipe is fixedly connected to the transmission belt. A staircase docking hook is arranged outside the second docking pipe. The staircase docking hook is used to hook the first docking groove or the second docking groove.

[0024] The beneficial effects of the above technical solutions provided by the embodiments of the present invention at least include:

[0025] The present invention prefabricates and assembles a staircase formwork and a steel mesh on the ground, and then, by using a lifting device, reduces the time for construction workers to work at high altitudes, thereby reducing the risk of safety accidents caused by falling from high altitudes. Moreover, the assembly on the ground can clean the construction waste in the formwork in advance, and during the subsequent grouting, it is grouted and formed at one time, reducing the cumbersome processes of multiple groutings and maintenance, and improving the construction efficiency. The movable baffle is controlled by an electromechanical structure to fall off, further increasing the efficiency of this construction. The lifting device lifts the assembled staircase structure from the ground to the target position, eliminating the need for manual workers to perform cumbersome assembly and adjustment at high altitudes, thus greatly shortening the construction period.

[0026] Other features and advantages of the present invention will be described in the following specification, and some of them will become obvious from the specification or can be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the written specification, claims, and drawings.

[0027] The technical solution of the present invention will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0028] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0029] Figure 1 It is a schematic structural diagram of a method for lifting and intercepting a formwork adapted to the steel bars of a staircase flight disclosed in an embodiment of the present invention;

[0030] Figure 2 is Figure 1 an enlarged view of part A in;

[0031] Figure 3 is Figure 1 an exploded structural diagram of the main staircase frame in;

[0032] Figure 4 is Figure 3 a schematic structural diagram after laying the formwork in;

[0033] Figure 5 It is a schematic structural diagram of a lifting device disclosed in an embodiment of the present invention;

[0034] Figure 6 It is a schematic structural diagram of a lifting hook disclosed in an embodiment of the present invention;

[0035] Figure 7 It is a schematic structural diagram of a transmission component disclosed in an embodiment of the present invention;

[0036] Figure 8Schematic diagram of the top of the lifting device disclosed in the embodiments of the present invention;

[0037] Figure 9 Schematic diagram of the movable baffle plate disclosed in the embodiments of the present invention.

[0038] Reference numerals:

[0039] 10. First staircase; 11. First support frame; 1101. First main keel; 1102. First docking plate; 11021. First docking groove; 1103. Second docking plate; 11031. Second docking groove; 12. Formwork; 13. Steel mesh; 20. Intermediate platform; 21. Platform board; 22. I-beam; 30. Scaffold; 40. Second staircase; 41. Second support frame; 4101. Second main keel; 42. Barrier joint; 50. Movable baffle plate; 51. First mounting plate; 52. Electric telescopic rod; 53. Connecting arm; 54. Intercepting plate; 5401. Movable groove; 5402. Protrusion; 5403. Slide rail; 55. Second mounting plate; 5501. Limit block; 56. Timer; 60. Lifting device; 61. Bottom fixing plate; 62. Mounting frame; 63. Square tube; 64. Transmission component; 6401. First gear fixing plate; 6402. First transmission gear; 6403. Driving motor; 6404. Second gear fixing plate; 6405. Second transmission gear; 6406. Transmission belt; 65. Lifting hook; 6501. Slide block; 6502. Roller; 6503. First docking pipe; 6504. Second docking pipe; 6505. Staircase docking hook; 66. Top plate. Detailed implementation manners

[0040] The exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art. Embodiment

[0041] The embodiments of the present invention provide a method for lifting and intercepting the formwork adapted to the reinforcing bars of the stair flight, including the following steps:

[0042] S1. Prepare the construction building materials for the first staircase 10, the intermediate platform 20 and the second staircase 40 according to the construction drawings;

[0043] S2. Erect the scaffold 30 below the construction position of the intermediate platform 20 and construct the intermediate platform 20 on the top of the scaffold 30;

[0044] S3. Assemble the first staircase 10 and the second staircase 40 on the ground below the construction positions of the first staircase 10 and the second staircase 40;

[0045] S4. Set up a movable partition board 50 at the lower one-third of the second staircase 40, and apply a release agent at the movable partition board 50;

[0046] S5. Erect lifting devices 60 at both ends of the construction positions of the first staircase 10 and the second staircase 40, and clean the construction waste in the formwork 12 to keep the formwork 12 clean;

[0047] S6. Use the lifting devices 60 to lift the assembled first staircase 10 and second staircase 40 to the construction positions for fixing;

[0048] S7. Use grouting equipment to pour cement mortar from bottom to top and wait for it to solidify;

[0049] S8. After solidification, the movable partition board 50 automatically separates, and then the formwork 12 and the scaffolding 30 can be removed.

[0050] As Figure 1 、 3 and shown in Fig. 4, the intermediate platform 20 includes two platform plates 21 spliced together. The periphery of the platform plate 21 is provided with I-beams 22. The bottom of the I-beams 22 is fixedly connected to the top of the scaffolding 30 by bolts. The intermediate platform 20 is the main load-bearing platform connecting the first staircase 10 and the second staircase 40. The formwork 12 is assembled above the intermediate platform 20, and a steel bar mesh 13 is tied in the formwork 12.

[0051] In this embodiment, the first staircase 10 includes a first support frame 11, which is formed by two first main keels 1101 arranged in parallel. A first docking plate 1102 and a second docking plate 1103 are respectively arranged at their relative positions. A first docking groove 11021 is opened at the center of the top of the first docking plate 1102, and a second docking groove 11031 is opened at the center of the top of the second docking plate 1103. The formwork 12 is arranged at the top of the two first main keels 1101. After the formwork 12 is fixed, a steel bar mesh 13 is tied in the formwork 12.

[0052] Furthermore, the second staircase 40 includes a second support frame 41 which is formed by two second main keels 4101 arranged in parallel. At their relative positions, there are respectively arranged a first docking plate 1102 and a second docking plate 1103 which are the same as those of the first support frame 11. The top of the second support frame 41 is constructed in the same process as the first staircase 10, that is, the laying of the formwork 12 and the binding of the steel mesh 13. Wherein, the formwork 12 is provided with a barrier seam 42 at the lower one-third position. An interception plate 54 is arranged at the barrier seam 42, which is to provide a stress release interval after the poured concrete solidifies, so as to avoid the deformation of the staircase caused by the shrinkage and expansion of the concrete.

[0053] As Figure 1 and 9 shown, the movable barrier plate 50 includes a first mounting plate 51, an electric telescopic rod 52 and an interception plate 54. The first mounting plate 51 is fixedly arranged on the side of the second staircase 40 close to the barrier seam 42. The electric telescopic rod 52 is fixed on the first mounting plate 51. The interception plate 54 is movably arranged in the opening direction of the barrier seam 42. A connecting arm 53 is vertically arranged at the end of the output shaft of the electric telescopic rod 52. The top of the connecting arm 53 is arranged together with the bottom of the mounting plate. At one end of the interception plate 54 away from the electric telescopic rod 52 in the length direction, there is arranged a slide rail 5403. At the second main keel 4101 close to the slide rail 5403, there is arranged a second mounting plate 55. A limiting block 5501 is arranged on the second mounting plate 55. The slide rail 5403 is slidably arranged on the limiting block 5501. The limiting block 5501 mainly provides a guiding function to ensure the stability of the sliding of the interception plate 54.

[0054] Furthermore, a plurality of movable grooves 5401 are arranged at the top of the interception plate 54. A protruding portion 5402 extending outwards is arranged at the bottom of the interception plate 54. When the electric telescopic rod 52 is fully retracted, the protruding portion 5402 abuts against the bottom of the second staircase 40. At this time, the interception plate 54 has no contact with the steel mesh 13 inside the second staircase 40. When the electric telescopic rod 52 is fully extended, the top of the interception plate 54 is located below the barrier seam 42.

[0055] Specifically, after the first staircase 10 and the second staircase 40 are assembled, the electric telescopic rod 52 is fully retracted. At this time, the interception plate 54 is located inside the formwork 12. Release agent is applied to the interception plate 54. When pouring concrete, the concrete is poured from bottom to top at one time and vibrated. In this process, there is no need for two-stage pouring, which saves construction time. When the hardening standard of the concrete is met, the electric telescopic rod 52 is controlled to extend, so that the interception plate 54 is moved out of the inside of the formwork 12.

[0056] As a preferred embodiment, a timer 56 is provided on the first mounting plate 51. The timer 56 is electrically connected to the electric telescopic rod 52. The separation time of the intercepting plate 54 is set through the timer 56. At the same time, an audible and visual alarm can be provided on the first mounting plate 51. When the timing time arrives, an audible and visual alarm is issued and the intercepting plate 54 is moved out to remind the construction workers to proceed with the next process, thereby improving construction efficiency.

[0057] As Figures 5 - 8 shown, the lifting device 60 includes a bottom fixing plate 61. At the top of the bottom fixing plate 61, a mounting frame 62 and a square tube 63 are provided. At the top of the square tube 63, a top plate 66 is provided. At the intersection of the square tube 63 and the mounting frame 62, a transmission assembly 64 is provided. On the transmission assembly 64, a lifting hook 65 is provided. The lifting hook 65 is used to hook the docking plates on the first support frame 11 and the second support frame 41. The height of the lifting device 60 has two different specifications. One is used to be arranged between the ground and the intermediate platform 20, and the other is arranged between the ground and the roof.

[0058] Specifically, when installing the first staircase 10, one of the lifting devices 60 (marked as the first lifting device here) is arranged at the bottom edge of the intermediate platform 20 and is opposite to the vertical docking center point of the opposite end of the first staircase 10 to ensure balanced and stable force during lifting. The lifting hook 65 is arranged together with the second docking plate 1103 on the first staircase 10. By starting the drive motor 6403 on the first lifting device, one end of the first staircase 10 relative to the intermediate platform 20 can be moved to the target position. During this process, after using a crowbar to correct the position at both ends, it can be fixed through a bolt structure. It should be noted that when assembling the first staircase 10, a moving roller 6502 can be placed at one end far from the intermediate platform 20 to facilitate docking during lifting.

[0059] When installing the second staircase 40, two lifting devices 60 with different heights are selected. The shorter one has the same size as the first lifting device (marked as the second lifting device here), and the higher one is the third lifting device. The second lifting device is arranged at the bottom edge of the intermediate platform 20 and is opposite to the vertical docking center point of the opposite end of the second staircase 40. The third lifting device is arranged below the edge of the top floor and is opposite to the vertical docking center point of the opposite end of the second staircase 40. At this time, the lifting hook 65 on the second lifting device is arranged together with the first docking plate 1102 on the second staircase 40, and the lifting hook 65 on the third lifting device is arranged together with the second docking plate 1103 on the second staircase 40. Then, by starting the drive motors 6403 on the two lifting devices 60, the second staircase 40 reaches the target position. At this time, use a crowbar to calibrate the docking position again to complete the fixation.

[0060] As Figure 5 andFigures 7 - 8 As shown, the transmission assembly 64 includes a first gear fixing plate 6401 disposed at the intersection of the mounting bracket 62 and the square tube 63, where a first transmission gear 6402 is provided. At the intersection of the square tube 63 and the top plate 66, a second gear fixing plate 6404 is provided, where a second transmission gear 6405 is provided. A transmission belt 6406 is disposed between the two gears. A driving motor 6403 is provided on the mounting bracket 62, and the output shaft of the driving motor 6403 is arranged together with the first transmission gear 6402.

[0061] As Figure 6 shown, the lifting hook 65 includes a slider 6501 slidably disposed on the square tube 63. A plurality of rollers 6502 are provided inside the slider 6501, and the rollers 6502 are in contact with the square tube 63. First docking pipes 6503 and second docking pipes 6504 are symmetrically provided outside the slider 6501. The first docking pipe 6503 is fixedly connected to the transmission belt 6406. A staircase docking hook 6505 is provided outside the second docking pipe 6504, and the staircase docking hook 6505 is used to hook the first docking groove 11021 or the second docking groove 11031.

[0062] As a preferred embodiment, there are two sets of the mounting bracket 62, the square tube 63, the transmission assembly 64 and the lifting hook 65 on the bottom fixing plate 61, and they are all arranged side by side. Among them, one driving motor 6403 is shared, that is, the output shaft of the driving motor 6403 is respectively connected to the two first transmission gears 6402. When the two lifting hooks 65 apply lifting forces to the docking plates on the staircase, the stability can be improved.

[0063] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of the present disclosure. The appended method claims present the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy recited.

[0064] In the above detailed description, various features are combined in a single embodiment to simplify the present disclosure. This method of disclosure should not be construed as reflecting an intention that the embodiments of the claimed subject matter require more features than are expressly stated in each claim. On the contrary, as reflected by the appended claims, the present invention resides in less than all of the features of a single disclosed embodiment. Accordingly, the appended claims are hereby expressly incorporated into the detailed description, where each claim stands on its own as a separate preferred embodiment of the present invention.

[0065] Those skilled in the art should also understand that all the illustrative logical blocks, modules, circuits, and algorithmic steps described in connection with the embodiments herein can be implemented as electronic hardware, computer software, or a combination thereof. To clearly illustrate the interchangeability between hardware and software, the above various illustrative components, blocks, modules, circuits, and steps have been generally described in terms of their functions. Whether such a function is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Skilled technicians can implement the described functions in a flexible manner for each specific application. However, such implementation decisions should not be construed as departing from the scope of protection of this disclosure.

[0066] The steps of the methods or algorithms described in connection with the embodiments herein can be directly embodied as hardware, software modules executed by a processor, or a combination thereof. The software modules can be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium well-known in the art. An exemplary storage medium is connected to the processor so that the processor can read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. The ASIC can be located in a user terminal. Of course, the processor and the storage medium can also exist as discrete components in the user terminal.

[0067] For software implementation, the techniques described in this application can be implemented using modules (e.g., procedures, functions, etc.) that perform the functions described in this application. These software codes can be stored in a memory unit and executed by a processor. The memory unit can be implemented within the processor or outside the processor. In the latter case, it is communicatively coupled to the processor by various means, which are well-known in the art.

[0068] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments. However, those of ordinary skill in the art should recognize that the various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, this word is covered in a manner similar to the term "including" as it is interpreted when used as a transitional word in the claims. In addition, any term "or" used in the specification or claims of the patent application is intended to mean "non-exclusive or".

Claims

1. A template lifting and intercepting method for reinforcing bars adapted to a stair flight, characterized in that, It includes the following steps: S1. Prepare the construction building materials for the first staircase (10), the intermediate platform (20) and the second staircase (40) according to the construction drawings; S2. Erect a scaffolding (30) below the construction position of the intermediate platform (20), and construct the intermediate platform (20) on the top of the scaffolding (30); S3. Assemble the first staircase (10) and the second staircase (40) on the ground below the construction positions of the first staircase (10) and the second staircase (40); S4. Set an active partition board (50) at the lower one-third of the second staircase (40), and apply a release agent at the active partition board (50); S5. Erect lifting devices (60) at both ends of the construction positions of the first staircase (10) and the second staircase (40), and clean the construction waste in the formwork (12) to keep the formwork (12) clean; S6. Use the lifting devices (60) to lift the assembled first staircase (10) and second staircase (40) to the construction positions for fixation; S7. Use grouting equipment to pour cement mortar from bottom to top and wait for it to solidify; S8. After solidification, the active partition board (50) automatically separates, and then the formwork (12) and the scaffolding (30) can be removed; The intermediate platform (20) includes two platform plates (21) spliced together. The periphery of the platform plate (21) is provided with I-beams (22). The bottom of the I-beams (22) is fixedly connected to the top of the scaffolding (30) by bolts. The intermediate platform (20) is the main load-bearing platform connecting the first staircase (10) and the second staircase (40). A formwork (12) is assembled above the intermediate platform (20), and a steel bar mesh (13) is tied in the formwork (12); The first staircase (10) includes a first support frame (11), which is formed by two first main keels (1101) arranged in parallel. A first docking plate (1102) and a second docking plate (1103) are respectively arranged at their relative positions. A first docking groove (11021) is opened at the center of the top of the first docking plate (1102), and a second docking groove (11031) is opened at the center of the top of the second docking plate (1103). A formwork (12) is arranged on the top of the two first main keels (1101). After the formwork (12) is fixed, a steel bar mesh (13) is tied in the formwork (12); The second staircase (40) includes a second support frame (41), which is formed by two second main keels (4101) arranged in parallel. A first docking plate (1102) and a second docking plate (1103) the same as those of the first support frame (11) are respectively arranged at their relative positions. The same procedures as those of the first staircase (10) are carried out for the top of the second support frame (41), that is, the laying of the formwork (12) and the tying of the steel bar mesh (13), wherein a blocking seam (42) is opened at the lower one-third of the formwork (12); The movable baffle plate (50) includes a first mounting plate (51), an electric telescopic rod (52) and an intercepting plate (54). The first mounting plate (51) is fixedly arranged on the side of the second staircase (40) close to the barrier seam (42). The electric telescopic rod (52) is fixed on the first mounting plate (51). The intercepting plate (54) is movably arranged in the opening direction of the barrier seam (42). A connecting arm (53) is vertically arranged at the end of the output shaft of the electric telescopic rod (52). The top of the connecting arm (53) is arranged together with the bottom of the mounting plate. A slide rail (5403) is arranged at one end of the intercepting plate (54) away from the electric telescopic rod (52) in the length direction. A second mounting plate (55) is arranged at the second main keel (4101) close to the slide rail (5403). A limiting block (5501) is arranged on the second mounting plate (55). The slide rail (5403) is slidably arranged on the limiting block (5501). After the first staircase (10) and the second staircase (40) are assembled, the electric telescopic rod (52) is fully retracted. At this time, the intercepting plate (54) is located inside the formwork (12). When the hardening standard of the concrete is met, the electric telescopic rod (52) is controlled to extend, so that the intercepting plate (54) moves out from the inside of the formwork (12).

2. The template lifting and intercepting method for the stair flight adapted steel bars according to claim 1, characterized in that, A plurality of movable grooves (5401) are formed at the top of the intercepting plate (54). A protruding portion (5402) extending outwards is arranged at the bottom of the intercepting plate (54). When the electric telescopic rod (52) is fully retracted, the protruding portion (5402) abuts against the bottom of the second staircase (40). At this time, the intercepting plate (54) has no contact with the steel mesh (13) inside the second staircase (40). When the electric telescopic rod (52) is fully extended, the top of the intercepting plate (54) is located below the barrier seam (42).

3. A formwork lifting and intercepting method for stairs flight adapted steel bars according to claim 2, characterized in that A timer (56) is arranged on the first mounting plate (51). The timer (56) is electrically connected to the electric telescopic rod (52).

4. The template lifting and intercepting method for the staircase flight adapted steel bars as claimed in claim 1, wherein The lifting device (60) includes a bottom fixing plate (61). An installation frame (62) and a square pipe (63) are arranged at the top of the bottom fixing plate (61). A top plate (66) is arranged at the top of the square pipe (63). A transmission component (64) is arranged at the intersection of the square pipe (63) and the installation frame (62). A lifting hook (65) is arranged on the transmission component (64). The lifting hook (65) is used for hooking the docking plates on the first support frame (11) and the second support frame (41). The height of the lifting device (60) has two different specifications. One is used for being arranged between the ground and the intermediate platform (20), and the other is arranged between the ground and the roof of the building.

5. A method for lifting and intercepting a formwork of a stair flight adapted with steel bars as claimed in claim 4, characterized in that, The transmission assembly (64) includes a first gear fixing plate (6401) arranged at the intersection of the mounting bracket (62) and the square pipe (63), where a first transmission gear (6402) is provided. At the intersection of the square pipe (63) and the top plate (66), a second gear fixing plate (6404) is provided, where a second transmission gear (6405) is provided. A transmission belt (6406) is arranged between the two gears. A drive motor (6403) is arranged on the mounting bracket (62), and the output shaft of the drive motor (6403) is arranged together with the first transmission gear (6402).

6. The template lifting and intercepting method for the steel bars adapted to the stair flight according to claim 5, characterized in that, The lifting hook (65) includes a slider (6501) slidably arranged on the square pipe (63). A plurality of rollers (6502) are arranged inside the slider (6501), and the rollers (6502) are in contact with the square pipe (63). A first docking pipe (6503) and a second docking pipe (6504) are symmetrically arranged outside the slider (6501). The first docking pipe (6503) is fixedly connected to the transmission belt (6406). A staircase docking hook (6505) is arranged outside the second docking pipe (6504), and the staircase docking hook (6505) is used to hook the first docking groove (11021) or the second docking groove (11031).

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