Fabricated building stair mold

Abstract

The invention discloses an assembly type building stair mold, and relates to the technical field of stair molds, the assembly type building stair mold comprises a mold mechanism, the side face of the mold mechanism is provided with a transverse steel bar limiting mechanism, and the transverse steel bar limiting mechanism is used for limiting and fixing transverse steel bars in a prefabricated stair. According to the longitudinal reinforcement limiting mechanism, the height of a clamping head is accurately adjusted through a third mounting bolt, the clamping head can be flexibly selected according to the diameter of a longitudinal reinforcement, the mounting height and position of the longitudinal reinforcement can be accurately controlled, the overall positioning accuracy of a reinforcement framework is guaranteed, and then the mechanical property of the prefabricated stair is improved; the sleeve plays a role in protecting the end, inserted into the mold mechanism, of the third mounting bolt, it is avoided that concrete adhesion affects bolt disassembly, meanwhile, due to the detachable design of the third mounting bolt and the modular structure of the steel bar limiting mechanism, the demolding difficulty is lowered, damage to stairs after a component is formed is reduced, and the demolding efficiency and the finished product quality are improved.

Description

Technical Field

[0001] This invention relates to the field of staircase mold technology, specifically to prefabricated building staircase molds. Background Technology

[0002] Prefabricated construction centers on factory prefabrication and on-site assembly. Staircases, as key vertical traffic components, directly impact the overall project's effectiveness in terms of quality and adaptability. Traditional on-site formwork suffers from insufficient precision, low efficiency, and significant environmental susceptibility, making it difficult to meet the demands of large-scale production. Prefabricated building staircase molds thus become a core solution. These specialized molding devices for factory-prefabricated staircases ensure the molding accuracy and mechanical properties of concrete components through standardized cavities, positioning, and fixing systems, preventing structural defects. The molds are reusable, adaptable to the modular designs of different staircase types, and enable standardized production. This reduces disposable formwork consumption and construction waste, meeting green building requirements, while also transferring high-risk high-altitude formwork operations to the factory, reducing safety hazards and ensuring rapid and precise on-site assembly, thus contributing to improved quality and efficiency in prefabricated construction.

[0003] However, in existing technologies, the steel reinforcement cage positioning mechanism of prefabricated building staircase molds only focuses on the basic support function and does not have an effective locking and fixing structure. The initial positioning of the steel reinforcement cage is achieved only through simple fitting or plugging. During the concrete pouring and vibration process, the high-frequency impact force generated by vibration will directly act on the steel reinforcement cage. The positioning mechanism without locking function cannot effectively offset this external force, which will cause the steel reinforcement cage to shift or tilt. The shift of the steel reinforcement will directly damage the internal force system of the prefabricated staircase and reduce the key mechanical properties of the component such as shear resistance and bending resistance. The deformation of the mold will further aggravate the dimensional deviation and surface flatness defects of the prefabricated staircase. The combination of the two will not only lead to poor stability of the component forming quality, but also seriously affect the accuracy and adaptability of on-site assembly, and even bury potential hidden dangers to the safety of the building structure. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated building staircase mold to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated building staircase mold, including an air valve mechanism and a mold mechanism, wherein a transverse steel bar limiting mechanism is installed on the side of the mold mechanism, the transverse steel bar limiting mechanism being used to limit and fix the transverse steel bars inside the prefabricated staircase, and a longitudinal steel bar limiting mechanism is installed at the bottom of the mold mechanism, the longitudinal steel bar limiting mechanism being used to limit and fix the longitudinal steel bars inside the prefabricated staircase. The transverse rebar limiting mechanism includes a fixed frame and a second mounting bolt. The fixed frame is fixedly connected to the bottom of the mold mechanism, and a guide frame is fixedly connected to the surface of the fixed frame. Two first mounting blocks are slidably connected to the upper part of the guide frame. The surface of the second mounting bolt is provided with two threads in opposite directions. The two first mounting blocks are symmetrically distributed on the surfaces of the two threads in opposite directions. The second mounting bolt is rotatably connected to the upper part of the guide frame. A clamping block is detachably connected to the upper part of the first mounting block. The longitudinal steel bar limiting mechanism includes a No. 3 mounting bolt, which is threadedly connected to the mold mechanism. A No. 2 mounting block is inserted into the end of the No. 3 mounting bolt. A No. 1 connecting plate is fixedly connected to the upper part of the No. 2 mounting block. A No. 2 connecting plate is detachably connected to the upper part of the No. 1 connecting plate. A clamp is fixedly connected to the upper part of the No. 2 connecting plate.

[0006] Preferably, the mold mechanism includes a bottom mold, with side molds slidably connected to both sides of the bottom mold, and a step surface mold detachably connected between the two side molds. The step surface mold has a feeding hole at its upper part, and the step surface mold is made of aluminum alloy or wood.

[0007] Preferably, the inner wall of the side mold is provided with an installation limiting groove that is adapted to the side of the step surface mold, and a sealing gasket is installed inside the installation limiting groove.

[0008] Preferably, the side of the bottom mold is fixedly connected to an installation mechanism, the installation mechanism including an installation frame and a first installation head, the surface of the installation frame is threadedly connected to a first installation bolt, the end of the first installation bolt is rotatably connected to the outer wall of the side mold, the first installation head is fixedly connected to the bottom of the side mold, the surface of the bottom mold is provided with a first limiting groove, and the first installation head is slidably inserted into the first limiting groove.

[0009] Preferably, the upper part of the guide frame is provided with a sliding groove, and the bottom of the first mounting block is fixedly connected with a slider, which is located inside the sliding groove and slidably connected to the guide frame.

[0010] Preferably, a second mounting head is fixedly connected to the upper part of the first mounting block, and a second limiting groove is provided at the bottom of the clamping block. The second mounting head is located inside the second limiting groove and is inserted into the clamping block. The clamping block can be replaced by inserting the second limiting groove into the second mounting head.

[0011] Preferably, a limiting rod is fixedly connected to the bottom of the first connecting plate, the limiting rod is inserted into the bottom mold, and a sleeve is sleeved on the surface of the third mounting bolt, the sleeve being located between the second mounting block and the bottom mold.

[0012] Preferably, the bottom of the second connecting plate is fixedly connected to the third mounting head, and the upper part of the first connecting plate is provided with the third limiting groove. The third mounting head is located inside the third limiting groove and is inserted into the first connecting plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the rebar limiting mechanism utilizes the reverse thread on the surface of the No. 2 installation bolt. When rotated, it can drive the two No. 1 installation blocks to move synchronously in opposite directions. With the detachable clamping block, it can quickly clamp and fix the transverse rebar, preventing displacement during vibration. It can also adapt to transverse rebars of different diameters by changing different specifications of clamping blocks, improving versatility. The longitudinal rebar limiting mechanism achieves precise height adjustment of the clamp head through the No. 3 installation bolt. The clamp head can be flexibly selected according to the diameter of the longitudinal rebar, which can accurately control the installation height and position of the longitudinal rebar, ensuring the overall positioning accuracy of the rebar skeleton, thereby improving the mechanical performance of the precast staircase. The sleeve protects the end of the No. 3 installation bolt inserted into the mold mechanism, preventing concrete adhesion from affecting bolt disassembly. At the same time, the detachable design of the No. 3 installation bolt and the modular structure of the rebar limiting mechanism reduce the difficulty of demolding, reduce damage to the staircase after component molding, and improve demolding efficiency and finished product quality. 2. In this invention, the mold mechanism, through the adjustment and limiting structure of the installation mechanism and the sealing design of the installation limiting groove, combined with the modular splicing of the side mold and the step surface mold, improves the mold assembly accuracy and sealing performance, and avoids grout leakage; the sliding groove and slider of the transverse rebar limiting mechanism ensure guiding accuracy, the reverse thread of the No. 2 installation bolt realizes synchronous clamping of the rebar, and the plug-in structure of the No. 2 installation head and the No. 2 limiting groove facilitates the replacement of clamping blocks and adapts to transverse rebars of different diameters; the No. 3 installation head and the No. 3 limiting groove of the longitudinal rebar limiting mechanism realize quick replacement of the clamping head, the limiting rod improves the positioning stability, the No. 3 installation bolt can accurately adjust the height of the longitudinal rebar, and the sleeve prevents the bolt from sticking to the concrete; the overall structure, through the precise positioning and modular design of each limiting mechanism, ensures the stability of the rebar skeleton position, reduces the impact of vibration displacement and mold deformation, and at the same time improves the assembly and demolding efficiency, ensuring the forming quality and mechanical properties of the precast staircase; 3. In this invention, the mold mechanism achieves rapid and precise insertion of the side mold and the step surface mold through the sliding connection between the side mold and the bottom mold, in conjunction with the No. 1 mounting bolt of the installation mechanism driving the side mold to move. Furthermore, the sliding insertion structure between the No. 1 mounting head and the No. 1 limiting groove effectively limits the movement trajectory of the side mold, preventing positional deviations during installation and improving mold assembly efficiency and accuracy. The mounting limiting groove on the inner wall of the side mold matches the side of the step surface mold, and the sealing gasket within the groove enhances the sealing performance at the joints of the mold mechanism, effectively preventing grout leakage during concrete pouring and ensuring the flatness of the precast staircase surface. The step surface mold is made of aluminum alloy or wood, balancing structural strength and lightweight requirements, and its detachable design facilitates subsequent demolding and mold maintenance, further enhancing ease of use. Attached Figure Description

[0014] Figure 1 This is a first three-dimensional structural schematic diagram of the prefabricated building staircase mold of the present invention; Figure 2 This is a schematic diagram of the second three-dimensional structure of the prefabricated building staircase mold of the present invention; Figure 3 This is a three-dimensional structural diagram of the installation limiting groove in the prefabricated building staircase mold of the present invention; Figure 4 This is a three-dimensional structural diagram of the installation mechanism in the prefabricated building staircase mold of the present invention; Figure 5 This is a top view of the prefabricated building staircase mold of the present invention; Figure 6 This is a three-dimensional structural diagram of the transverse steel bar limiting mechanism in the prefabricated building staircase mold of the present invention; Figure 7 This is a front view schematic diagram of the longitudinal steel bar limiting mechanism in the prefabricated building staircase mold of the present invention; Figure 8 This is a cross-sectional structural diagram of the longitudinal steel bar limiting mechanism in the prefabricated building staircase mold of the present invention.

[0015] In the diagram: 1. Mold mechanism; 11. Bottom mold; 12. Side mold; 13. Step surface mold; 14. Installation limiting groove; 2. Installation mechanism; 21. Mounting frame; 22. Mounting bolt No. 1; 23. Mounting head No. 1; 24. Limiting groove No. 1; 3. Transverse rebar limiting mechanism; 31. Fixing frame; 32. Guide frame; 33. Mounting block No. 1; 34. Clamping block; 35. Mounting head No. 2; 36. Limiting groove No. 2; 37. Mounting bolt No. 2; 38. Slider; 39. Slide groove; 4. Longitudinal rebar limiting mechanism; 41. Mounting bolt No. 3; 42. Mounting block No. 2; 43. Connecting plate No. 1; 44. Connecting plate No. 2; 45. Mounting head No. 3; 46. Limiting groove No. 3; 47. Clamping head; 48. Limiting rod; 5. Sleeve. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1: Refer to Figures 1-8 As shown: a prefabricated building staircase mold, including a mold mechanism 1, a transverse steel bar limiting mechanism 3 installed on the side of the mold mechanism 1, the transverse steel bar limiting mechanism 3 is used to limit and fix the transverse steel bars inside the prefabricated staircase, and a longitudinal steel bar limiting mechanism 4 installed at the bottom of the mold mechanism 1, the longitudinal steel bar limiting mechanism 4 is used to limit and fix the longitudinal steel bars inside the prefabricated staircase. The transverse rebar limiting mechanism 3 includes a fixed frame 31 and a second mounting bolt 37. The fixed frame 31 is fixedly connected to the bottom of the mold mechanism 1, and a guide frame 32 is fixedly connected to the surface of the fixed frame 31. Two first mounting blocks 33 are slidably connected to the upper part of the guide frame 32. The surface of the second mounting bolt 37 is provided with two threads in opposite directions. The two first mounting blocks 33 are symmetrically distributed on the surfaces of the two threads in opposite directions. The second mounting bolt 37 is rotatably connected to the upper part of the guide frame 32. A clamping block 34 is detachably connected to the upper part of the first mounting block 33. The longitudinal steel bar limiting mechanism 4 includes a No. 3 mounting bolt 41, which is threadedly connected to the mold mechanism 1. The end of the No. 3 mounting bolt 41 is inserted with a No. 2 mounting block 42. A No. 1 connecting plate 43 is fixedly connected to the upper part of the No. 2 mounting block 42. A No. 2 connecting plate 44 is detachably connected to the upper part of the No. 1 connecting plate 43. A clamp head 47 is fixedly connected to the upper part of the No. 2 connecting plate 44. The mold mechanism 1 includes a bottom mold 11, with side molds 12 slidably connected to both sides of the bottom mold 11. A step surface mold 13 is detachably connected between the two side molds 12. A feed hole is provided on the upper part of the step surface mold 13. The step surface mold 13 is made of aluminum alloy or wood. The inner wall of the side mold 12 is provided with an installation limiting groove 14 that matches the side of the step surface mold 13. A sealing gasket is installed inside the installation limiting groove 14. An installation mechanism 2 is fixedly connected to the side of the bottom mold 11. The installation mechanism 2 includes an installation bracket 21 and a first installation head 23. A first installation bolt 22 is threadedly connected to the surface of the installation bracket 21. The end of the first installation bolt 22 is rotatably connected to the outer wall of the side mold 12. The first installation head 23 is fixedly connected to the bottom of the side mold 12. A first limiting groove 24 is provided on the surface of the bottom mold 11. The first installation head 23 is slidably inserted into the first limiting groove 24.

[0018] In use, the side mold 12 is pushed to insert into the step surface mold 13 by rotating the first mounting bolt 22. The step surface mold 13 is fixed and positioned by the mounting limiting grooves 14 on the inner walls of the two side molds 12. The sealing gasket inside the mounting limiting groove 14 seals the position of each part of the installed mold mechanism 1. When the side mold 12 is fixed and positioned on the step surface mold 13, the first mounting head 23 slides and inserts along the first limiting groove 24, thereby limiting the movement of the side mold 12. Before installing the side formwork 12 and the step surface formwork 13, the bottom plate reinforcement is tied first. During the binding process, the two clamping blocks 34 are driven by rotating the second installation bolt 37 to clamp and fix some of the transverse reinforcement, ensuring the stability of the height and position of the transverse reinforcement. The clamping blocks 34 and the first installation block 33 are detachably installed, which facilitates the clamping and fixing of reinforcements of different diameters. Based on the diameter of the longitudinal reinforcing bars, select a matching clamp 47. Install the clamp 47 by inserting the No. 3 mounting head 45 into the No. 3 limiting groove 46. Insert the clamp 47 into the bottom mold 11 by inserting the limiting rod 48. While inserting the No. 3 mounting bolt 41 into the No. 2 mounting block 42 by rotating it, support the No. 1 connecting plate 43. The height of the clamp 47 can be precisely adjusted by rotating the No. 3 mounting bolt 41, thereby precisely adjusting the height of the longitudinal reinforcing bars and limiting the position of the longitudinal reinforcing bars to ensure their stability. The end of the No. 3 mounting bolt 41 inserted into the mold mechanism 1 is protected by the sleeve 5. After the staircase is formed, the No. 3 mounting bolt 41 can be removed, which facilitates the demolding of the formed staircase.

[0019] The mold mechanism 1 is connected to the bottom mold 11 via a sliding connection between the side mold 12 and the bottom mold 11. The side mold 12 is driven to move by the first mounting bolt 22 of the installation mechanism 2, allowing for quick and precise insertion of the side mold 12 into the step surface mold 13. The sliding insertion structure of the first mounting head 23 and the first limiting groove 24 effectively limits the movement trajectory of the side mold 12, preventing positional deviations during installation and improving mold assembly efficiency and precision. The mounting limiting groove 14 on the inner wall of the side mold 12 is adapted to the side of the step surface mold 13. Combined with the sealing gasket within the groove, it enhances the sealing performance at the joint of the mold mechanism 1, effectively preventing grout leakage during concrete pouring and ensuring the flatness of the precast staircase surface. The step surface mold 13 is made of aluminum alloy or wood, balancing structural strength and lightweight requirements. Its detachable design facilitates subsequent demolding and mold maintenance, further enhancing ease of use.

[0020] The transverse rebar limiting mechanism 3 utilizes the reverse thread on the surface of the No. 2 mounting bolt 37. When rotated, it can drive the two No. 1 mounting blocks 33 to move synchronously in opposite directions. In conjunction with the detachable clamping block 34, it can quickly clamp and fix the transverse rebar, preventing displacement during vibration. It can also adapt to transverse rebars of different diameters by replacing the clamping block 34 with different specifications, improving versatility. The longitudinal rebar limiting mechanism 4 achieves precise height adjustment of the clamping head 47 through the No. 3 mounting bolt 41. The clamping head 47 can be flexibly selected according to the diameter of the longitudinal rebar, which can accurately control the installation height and position of the longitudinal rebar, ensuring the overall positioning accuracy of the rebar skeleton, thereby improving the mechanical performance of the precast staircase. The sleeve 5 protects the end of the No. 3 mounting bolt 41 inserted into the mold mechanism 1, preventing concrete adhesion from affecting bolt disassembly. At the same time, the detachable design of the No. 3 mounting bolt 41 and the modular structure of the rebar limiting mechanism reduce the difficulty of demolding, reduce damage to the staircase after component molding, and improve demolding efficiency and finished product quality.

[0021] Example 2: According to Figures 1-8 As shown, a sliding groove 39 is provided on the upper part of the guide frame 32. A slider 38 is fixedly connected to the bottom of the first mounting block 33. The slider 38 is located inside the sliding groove 39 and is slidably connected to the guide frame 32. A second mounting head 35 is fixedly connected to the upper part of the first mounting block 33. A second limiting groove 36 is provided at the bottom of the clamping block 34. The second mounting head 35 is located inside the second limiting groove 36 and is inserted into the clamping block 34. The clamping block is clamped through the insertion of the second limiting groove 36 and the second mounting head 35. Replacement is performed on 34. The bottom of the first connecting plate 43 is fixedly connected to a limiting rod 48, which is inserted into the bottom mold 11. The surface of the third mounting bolt 41 is fitted with a sleeve 5, which is located between the second mounting block 42 and the bottom mold 11. The bottom of the second connecting plate 44 is fixedly connected to a third mounting head 45. The upper part of the first connecting plate 43 is provided with a third limiting groove 46, and the third mounting head 45 is located inside the third limiting groove 46 and is inserted into the first connecting plate 43.

[0022] In this invention, during the assembly of the mold mechanism 1, the side mold 12 is driven to slide along the bottom mold 11 by the first mounting bolt 22 of the mounting mechanism 2, so that the side mold 12 and the step surface mold 13 are fixed by insertion through the mounting limiting groove 14. The first mounting head 23 cooperates with the first limiting groove 24 to realize the movement limitation of the side mold 12. When the transverse steel bar is limited, the sliding groove 39 of the guide frame 32 and the slider 38 of the first mounting block 33 form a sliding guide. When the second mounting bolt 37 is rotated, its reverse thread drives the two first mounting blocks 3 3. The two parts move synchronously towards each other. The clamping block 34 is fixed by the insertion of the second installation head 35 and the second limiting groove 36 to achieve the clamping of the horizontal steel bar. When the longitudinal steel bar is limited, the third installation head 45 and the third limiting groove 46 cooperate to complete the installation of the clamp 47. The limiting rod 48 is inserted into the bottom mold 11 to position the first connecting plate 43. The height of the clamp 47 can be precisely adjusted by rotating the third installation bolt 41. The sleeve 5 protects the end of the third installation bolt 41. Finally, the mold forming and the precise positioning of the steel bar are achieved through the cooperation of various mechanisms.

[0023] The mold mechanism 1, through the adjustment and limiting structure of the installation mechanism 2 and the sealing design of the installation limiting groove 14, combined with the modular splicing of the side mold 12 and the step surface mold 13, improves the mold assembly accuracy and sealing performance, and avoids grout leakage. The sliding groove 39 and slider 38 of the transverse rebar limiting mechanism 3 ensure guiding accuracy, the reverse thread of the second installation bolt 37 realizes synchronous clamping of the rebar, and the plug-in structure of the second installation head 35 and the second limiting groove 36 facilitates the replacement of the clamping block 34 to adapt to transverse rebars of different diameters. The third installation head 45 and the third limiting groove 46 of the longitudinal rebar limiting mechanism 4 realize the quick replacement of the clamping head 47, the limiting rod 48 improves the positioning stability, the third installation bolt 41 can accurately adjust the height of the longitudinal rebar, and the sleeve 5 prevents the bolt from sticking to the concrete. The overall structure, through the precise positioning and modular design of each limiting mechanism, ensures the stability of the rebar skeleton position, reduces the impact of vibration displacement and mold deformation, and improves the assembly and demolding efficiency, ensuring the forming quality and mechanical properties of the precast staircase.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated building staircase mold, characterized in that: The mold mechanism (1) includes a transverse steel bar limiting mechanism (3) installed on the side of the mold mechanism (1), which is used to limit and fix the transverse steel bars inside the prefabricated staircase. The mold mechanism (1) also includes a longitudinal steel bar limiting mechanism (4) installed at the bottom, which is used to limit and fix the longitudinal steel bars inside the prefabricated staircase. The transverse steel bar limiting mechanism (3) includes a fixed frame (31) and a second mounting bolt (37). The fixed frame (31) is fixedly connected to the bottom of the mold mechanism (1), and a guide frame (32) is fixedly connected to the surface of the fixed frame (31). Two first mounting blocks (33) are slidably connected to the upper part of the guide frame (32). Two threads with opposite directions are provided on the surface of the second mounting bolt (37). The two first mounting blocks (33) are symmetrically distributed on the two threads with opposite directions. The second mounting bolt (37) is rotatably connected to the upper part of the guide frame (32). A clamping block (34) is detachably connected to the upper part of the first mounting block (33). The longitudinal steel bar limiting mechanism (4) includes a No. 3 mounting bolt (41), which is threadedly connected to the mold mechanism (1), and a No. 2 mounting block (42) is inserted into the end of the No. 3 mounting bolt (41). A No. 1 connecting plate (43) is fixedly connected to the upper part of the No. 2 mounting block (42), and a No. 2 connecting plate (44) is detachably connected to the upper part of the No. 1 connecting plate (43). A clamp head (47) is fixedly connected to the upper part of the No. 2 connecting plate (44).

2. The prefabricated building staircase mold according to claim 1, characterized in that: The mold mechanism (1) includes a bottom mold (11), and side molds (12) are slidably connected to both sides of the bottom mold (11). A step surface mold (13) is detachably connected between the two side molds (12). A feed hole is provided on the upper part of the step surface mold (13). The step surface mold (13) is made of aluminum alloy or wood.

3. The prefabricated building staircase mold according to claim 2, characterized in that: The inner wall of the side mold (12) is provided with an installation limiting groove (14) that is adapted to the side of the step surface mold (13), and a sealing gasket is installed inside the installation limiting groove (14).

4. The prefabricated building staircase mold according to claim 2, characterized in that: The bottom mold (11) is fixedly connected to the side of the mounting mechanism (2), which includes a mounting bracket (21) and a first mounting head (23). The mounting bracket (21) is threadedly connected to a first mounting bolt (22). The end of the first mounting bolt (22) is rotatably connected to the outer wall of the side mold (12). The first mounting head (23) is fixedly connected to the bottom of the side mold (12). The bottom mold (11) is provided with a first limiting groove (24). The first mounting head (23) is slidably inserted into the first limiting groove (24).

5. The prefabricated building staircase mold according to claim 1, characterized in that: The guide frame (32) is provided with a sliding groove (39) on the upper part, and the bottom of the first mounting block (33) is fixedly connected with a slider (38). The slider (38) is located inside the sliding groove (39) and is slidably connected to the guide frame (32).

6. The prefabricated building staircase mold according to claim 1, characterized in that: The first mounting block (33) is fixedly connected to the upper part of the second mounting head (35), and the bottom of the clamping block (34) is provided with the second limiting groove (36). The second mounting head (35) is located inside the second limiting groove (36) and is inserted into the clamping block (34). The clamping block (34) can be replaced by inserting the second limiting groove (36) and the second mounting head (35).

7. The prefabricated building staircase mold according to claim 1, characterized in that: The bottom of the first connecting plate (43) is fixedly connected to a limiting rod (48), the limiting rod (48) is inserted into the bottom mold (11), and a sleeve (5) is sleeved on the surface of the third mounting bolt (41), the sleeve (5) is located between the second mounting block (42) and the bottom mold (11).

8. The prefabricated building staircase mold according to claim 1, characterized in that: The bottom of the second connecting plate (44) is fixedly connected to the third mounting head (45), and the upper part of the first connecting plate (43) is provided with the third limiting groove (46). The third mounting head (45) is located inside the third limiting groove (46) and is inserted into the first connecting plate (43).

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