A modular universal mold for precast concrete stairs

Abstract

This invention relates to an assemblable universal mold for precast concrete stairs, belonging to the field of concrete mold technology. It includes several retaining panels and several step blocks, the step blocks abutting each other. Each step block has a fixing block on its sidewall. Each retaining panel has a first fixing groove into which the fixing block is inserted. Each step block has an assembly component for assembling adjacent step blocks. Each retaining panel has a locking component for locking the fixing blocks. This invention offers the advantages of adjustability, reusability, and cost savings.

Description

Technical Field

[0001] This invention relates to the field of concrete mold technology, and in particular to an assemblable universal mold for precast concrete stairs. Background Technology

[0002] Stairs are an indispensable structure in buildings. Most existing staircases are prefabricated by pouring concrete and then transported to the construction site for assembly. In order to ensure the dimensional accuracy and pouring quality of the staircases, the process of prefabricating the staircases often involves first producing fixed steel molds and then pouring concrete through the steel molds.

[0003] However, in actual production, the mold components made with steel molds are directly fixed and cannot be adjusted in size. One set of steel molds can only make stairs of a fixed size. When making stairs, it is often necessary to adjust the height difference between the steps according to different situations. Since the steel molds cannot be adjusted in size, they cannot be reused and must be made again, resulting in high costs. Summary of the Invention

[0004] In order to make the mold adjustable and reusable and save costs, this application provides an assemblable universal mold for precast concrete stairs.

[0005] This application provides a precast concrete staircase assembly-type universal mold with the following technical solution:

[0006] A precast concrete staircase assembly-type universal mold includes several surrounding panels and several step blocks, the step blocks abutting each other, the side walls of the step blocks are provided with fixing blocks, the surrounding panels are provided with first fixing grooves, the fixing blocks are adapted to be inserted into the first fixing grooves, the step blocks are provided with assembly components for assembling adjacent step blocks, and the surrounding panels are provided with locking components for locking the fixing blocks.

[0007] By adopting the above technical solution, before use, the positions of adjacent step blocks are adjusted according to the height difference between the required prefabricated stair treads, and the connected step blocks are assembled together using assembly components. Then, the surrounding plate is used to abut the side wall of the step block, and the fixing blocks on all step blocks are fitted into the first fixing groove. The fixing blocks are locked by the locking component. The fixing blocks are fixed relative to the step blocks by abutting against the inner wall of the first fixing groove and locking by the locking component, thereby completing the adjustment and assembly of the mold. Compared with the non-adjustable steel mold, this mold is adjustable, has strong applicability, can be reused, and reduces costs.

[0008] Preferably, the assembly component includes an assembly block and an assembly rod. The step block is provided with a first assembly groove and a second assembly groove communicating with the first assembly groove. The assembly rod is slidably disposed in the first assembly groove, and the assembly block is disposed in the second assembly groove. One end of the assembly block is connected to the assembly rod, and the other end of the assembly block extends out of the second assembly groove and is fixedly connected to an adjacent step block.

[0009] By adopting the above technical solution, adjacent step blocks are connected by assembly rods and assembly blocks. When assembling adjacent step blocks, the height difference between adjacent step blocks can be adjusted by sliding the assembly blocks and assembly rods, so that the height difference meets the specifications of the manufactured staircase. The operation is simple and convenient.

[0010] Preferably, both the first assembly groove and the second assembly groove penetrate the bottom wall of the step block.

[0011] By adopting the above technical solution, both the first assembly groove and the second assembly groove penetrate the bottom wall of the step block, allowing the assembly rod to pass through the first assembly groove and the assembly block to pass through the second assembly groove to exit the bottom wall of the step block. This allows the step blocks to be disassembled from each other, thereby adjusting the number of step blocks, further increasing the applicability of the mold, enabling the mold to adjust the number of steps of the stairs produced, further facilitating recycling, and saving costs.

[0012] Preferably, the assembly slot passes through the step block, the assembly rod extends out of the assembly slot, the surrounding plate is provided with a second fixing slot, the assembly rod is adapted to be inserted into the second fixing slot, and the surrounding plate is provided with another set of locking components for locking the assembly rod.

[0013] By adopting the above technical solution, when assembling the enclosure panels, while inserting the fixing block into the first fixing groove, the assembly rod that protrudes from the assembly groove is also adapted to be inserted into the second fixing groove and locked with a locking component, which improves the stability of the assembly connection between adjacent step blocks, and also improves the stability of the connection between the enclosure panels and the step blocks, reducing the possibility of the enclosure panels or step blocks accidentally moving during the use of the mold, resulting in the substandard quality of the manufactured stairs.

[0014] Preferably, the inner wall of the second fixing groove is provided with an auxiliary block, the assembly rod is provided with an auxiliary groove, and the auxiliary block can be inserted into the auxiliary groove.

[0015] By adopting the above technical solution, when assembling the enclosure panels, when the assembly rod is inserted into the second fixing groove, the auxiliary block on the inner wall of the second fixing groove is inserted into the auxiliary groove on the assembly rod, which further improves the stability of the connection between the enclosure panels and the assembly rod, and reduces the possibility of the enclosure panels moving unexpectedly during the use of the mold, resulting in the stairs being of substandard quality.

[0016] Preferably, the assembly rod is provided with a first locking block and a second locking block, the second locking block connects the assembly rod and the first locking block, a first locking groove is formed between the assembly rod, the first locking block and the second locking block, a second locking groove is provided on the surface of the first locking block, the second locking groove penetrates the side wall of the first locking block, the first locking block can be adapted to be inserted into the first locking groove, the second locking block can be adapted to be inserted into the second locking groove, and the step block is provided with a connecting component, the connecting component is used to connect two step blocks side by side.

[0017] By adopting the above technical solution, the two step blocks and the assembly rods and assembly blocks are separated. The first locking blocks on the two assembly rods are adapted to be inserted into the first locking slot on the other assembly rod, and the second locking blocks are adapted to be inserted into the second locking slot. In this way, the two assembly rods are combined together. Then, the side walls of the two step blocks are placed against each other, so that the two step blocks and the assembly rods are combined together. The assembly rods are inserted into the first assembly slot, and the assembly blocks are moved to the appropriate position in the second assembly slot. Then, the two step blocks are connected by the connecting component, so that the two step blocks are connected side by side. This can widen the width of the staircase, further improve the adjustability and applicability of the mold, enable the manufacture of more specifications of staircases, facilitate reuse, and reduce costs.

[0018] Preferably, the connecting assembly includes a first connecting rod, a second connecting rod, and a connecting spring. The connecting spring connects the two first connecting rods, and the second connecting rod is located at the end of the first connecting rod away from the connecting spring. The step block is provided with a connecting groove communicating with the first assembly groove. The first connecting rod can be inserted into the first assembly groove, and the second connecting rod can be inserted into the connecting groove.

[0019] By adopting the above technical solution, when two step blocks are arranged side by side and the assembly rods are assembled together, the first connecting rod is pulled open to stretch the connecting spring, and the first connecting rod is inserted into the first assembly groove connecting the two step blocks. The first connecting rod is then released to allow the connecting spring to return to its original position. The connecting spring then pulls the second connecting rod to move, so that the two second connecting rods are respectively inserted into the connecting grooves of the two step blocks. The side wall of the second connecting rod abuts against the inner wall of the connecting groove, thus completing the connection of the two step blocks. The operation is simple and convenient.

[0020] Preferably, the locking assembly includes a locking rod, a locking spring, and a locking support rod. The enclosure plate is provided with a locking groove communicating with a first fixing groove or a second fixing groove. The locking rod is slidably disposed in the locking groove. The locking spring connects the locking rod and the inner wall of the locking groove. The locking rod enters the first fixing groove and abuts against the fixing block or enters the second fixing groove and abuts against the first locking block. The side wall of the enclosure plate is provided with a locking support groove communicating with the locking groove. The locking support rod is fixedly connected to the locking rod and is slidably disposed in the locking support groove.

[0021] By adopting the above technical solution, when assembling the enclosure panels, pushing the locking support rod causes the locking rod to slide and compress the locking spring. At this time, the locking rod is fully inserted into the locking groove. When the fixing block is inserted into the first fixing groove, or the first locking block is inserted into the second fixing groove, the locking rod is released. The locking spring returns to its original state and pushes the locking rod into the first fixing groove to abut against the fixing block, or into the second fixing groove to abut against the first locking block, thereby completing the locking of the fixing block or the first locking block. The operation is simple and convenient. When it is necessary to release the lock, pushing the locking support rod causes the locking rod to move and compress the locking spring, so that the locking rod no longer abuts against the fixing block or the first locking block, thus releasing the lock.

[0022] Preferably, the locking rod is provided with a locking slot, and the fixing block or the first locking block can be inserted into the locking slot.

[0023] By adopting the above technical solution, when the first locking block or the fixed block is locked by the locking component, after the locking rod is inserted into the first fixed groove or the second fixed groove, the fixed block or the first locking block is inserted into the locking groove on the locking rod, thereby completing the locking. The stability of the locking of the fixed block and the first locking block is improved by setting the locking groove.

[0024] Preferably, an auxiliary rod is provided between the locking rods of the two sets of locking components, and the auxiliary rod connects the two locking rods.

[0025] By adopting the above technical solution, the auxiliary rod facilitates the sliding of the locking rod. At the same time, the auxiliary rod connects two locking support rods, so that when the auxiliary rod is pushed to slide, the locking of the two sets of locking components can be engaged or disengaged simultaneously. This facilitates the assembly or disassembly of the enclosure panels and improves the ease of use.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By setting up a surrounding panel, step blocks, fixing blocks, a first fixing groove, an assembly component, and a locking component, the step blocks are arranged according to the specifications of the staircase to be made using the assembly component. Then, the surrounding panel is assembled, and the fixing blocks on the step blocks are fitted and inserted into the first fixing groove on the surrounding panel. The fixing blocks are then locked using the locking component, thus completing the assembly of the mold. This mold can change the height difference between the step blocks through the assembly component, so that the mold can be used to make staircases of different specifications. The mold can be adjusted to make new staircases. Compared with non-adjustable steel molds, this mold can be adjusted and reused, effectively reducing the overall amortization cost.

[0028] 2. By setting up assembly blocks, assembly rods, a first assembly slot, a second assembly slot, a first locking block, a second locking block, a first locking groove, a second locking groove, and a connecting component, the assembly blocks connect the side wall of the step block and the assembly rod. The assembly blocks on the side wall of the step block are inserted into the second assembly slot of the adjacent step block, so that the assembly rod is inserted into the second assembly slot. By adjusting the position of the assembly rod in the second assembly slot, the height difference between two adjacent step blocks can be adjusted, thereby adjusting the specifications of the manufactured staircase. At the same time, two step blocks can be connected side by side, so that the first locking block on the assembly rod is inserted into the first locking groove on another assembly rod, and the second locking block is inserted into the second locking groove on another assembly rod. The side by side step blocks are connected by the connecting component, thereby changing the length of the manufactured staircase tread surface, further improving the adjustable range of the mold and increasing the possibility of reuse.

[0029] 3. By setting a first connecting rod, a second connecting rod, a connecting spring, and a connecting groove, the connecting spring connects the two first connecting rods, and the second connecting rod is located at the end of the first connecting rod away from the connecting spring. When two step blocks need to be connected side by side, the two first connecting rods are stretched, causing the connecting spring to stretch, and the first connecting rod is inserted into the first assembly groove. The first connecting rod is released, the connecting spring returns to its original state, and the first connecting rod pulls the second connecting rod to be inserted into the connecting groove. The side wall of the second connecting rod presses against the inner wall of the connecting groove, connecting the two step blocks side by side. The operation is simple and convenient. Attached Figure Description

[0030] Figure 1 This is an overall schematic diagram of an assemblable universal mold for precast concrete stairs provided in an embodiment of this application.

[0031] Figure 2 It is a cross-sectional schematic diagram used to illustrate the structure of the assembled components.

[0032] Figure 3 It is a cross-sectional schematic diagram used to illustrate the connection relationship of the surrounding plates.

[0033] Figure 4 It is a cross-sectional schematic diagram used to illustrate the structure of the locking component.

[0034] Figure 5 It is a cross-sectional schematic diagram used to illustrate the structure of the connecting components.

[0035] Figure 6 It is a schematic diagram used to illustrate the connection relationship between the assembled rods.

[0036] Explanation of reference numerals in the attached drawings: 1. Step block; 11. First assembly slot; 12. Second assembly slot; 13. Connecting slot; 2. Enclosure plate; 21. Fixing block; 22. First fixing slot; 23. Second fixing slot; 231. Auxiliary block; 24. Locking slot; 25. Locking support slot; 3. Baffle; 4. Assembly component; 41. Assembly block; 42. Assembly rod; 421. Auxiliary slot; 422. First locking block; 4221. Second locking slot; 423. Second locking block; 424. First locking slot; 5. Connecting component; 51. First connecting rod; 52. Second connecting rod; 53. Connecting spring; 6. Locking component; 61. Locking rod; 611. Locking slot; 62. Locking spring; 63. Locking support rod; 631. Auxiliary rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0038] This application discloses an assemblable universal mold for precast concrete stairs. (See also...) Figures 1 to 5 It includes two retaining panels 2 and several step blocks 1 that abut against each other. The step blocks 1 are arranged side by side, with baffles 3 fixedly installed on the sidewalls of the step blocks 1 at both ends. A circular fixing block 21 is fixedly installed on the sidewall of the step block 1 closest to the retaining panel 2. A first fixing groove 22 is provided on the sidewall of the retaining panel 2 closest to the step block 1. The first fixing groove 22 penetrates through the sidewall of the retaining panel 2, and the fixing block 21 is fitted into the first fixing groove 22. The retaining panel 2 is provided with a set of locking components 6 for locking the fixing blocks 21. Assembly components 4 for assembling adjacent step blocks 1 are provided between the step blocks 1. Connecting components 5 for connecting two step blocks 1 side by side are provided between the side-by-side step blocks 1. The step blocks 1 are connected side-by-side in pairs using connecting component 5, and then assembled together using assembly component 4. The height difference between adjacent step blocks 1 is adjusted according to the specifications of the staircase. Afterwards, the retaining plate 2 is installed, and the fixing block 21 is inserted into the first fixing groove 22 and locked using locking component 6, completing the mold assembly. This mold allows for adjustment of the staircase width via connecting component 5 and of the staircase step height via assembly component 4, effectively reducing overall amortization costs compared to non-adjustable steel molds.

[0039] To improve the convenience of adjustment, refer to Figures 1 to 2The assembly component 4 includes an assembly block 41 and an assembly rod 42. A first assembly groove 11 is provided through the side wall of the step block 1 near the enclosure plate 2. A second assembly groove 12, perpendicular to and communicating with the first assembly groove 11, is provided on the side wall of the step block 1. Both the first and second assembly grooves 11 and 12 penetrate the bottom wall of the step block 1. The assembly rod 42 is inserted into the first assembly groove 11 and protrudes from the side wall of the step block 1. The assembly block 41 is inserted into the second assembly groove 12. One end of the assembly block 41 is integrally fixedly connected to the assembly rod 42, and the other end protrudes from the second assembly groove 12 and is fixedly connected to the side wall of an adjacent step block 1 or baffle 3. By changing the position of the assembly rod 42 within the first assembly groove 11, the position of the assembly block 41 within the second assembly groove 12 is changed, thereby adjusting the height difference between adjacent step blocks 1, making the adjustment very convenient.

[0040] To improve assembly stability, refer to Figure 2 and Figure 3 The side wall of the enclosure panel 2 near the step block 1 is provided with a second fixing groove 23 that penetrates the side wall. An auxiliary block 231 is fixedly installed on the bottom wall of the second fixing groove 23. The portion of the assembly rod 42 extending out of the step block 1 is provided with an auxiliary groove 421. The portion of the assembly rod 42 extending out of the step block 1 is adapted to be inserted into the second fixing groove 23, and the auxiliary block 231 is adapted to be inserted into the auxiliary groove 421. The enclosure panel 2 is provided with a locking assembly 6 for locking the assembly rod 42. When installing the enclosure panel 2, the assembly rod 42 is adapted to be inserted into the second fixing groove 23, and the auxiliary block 231 is adapted to be inserted into the auxiliary groove 421. The locking assembly 6 locks the assembly rod 42, thereby improving the stability of the assembly between the enclosure panel 2 and the step block 1, and between adjacent step blocks 1.

[0041] For ease of locking, refer to Figure 3 and Figure 4The locking assembly 6 includes a locking rod 61, a locking spring 62, and a locking support rod 63. The enclosure plate 2 has a locking groove 24 communicating with either the first fixing groove 22 or the second fixing groove 23. The locking rod 61 is slidably disposed in the locking groove 24. The locking spring 62 connects the locking rod 61 and the inner wall of the locking groove 24. A locking slot 611 is provided on the side wall of the locking rod 61 away from the locking spring 62, and the locking slot 611 penetrates the side wall of the locking rod 61. A locking support groove 25 communicating with the locking groove 24 is provided on the side wall of the enclosure plate 2 away from the step block 1. The locking support rod 63 is slidably disposed in the locking support groove 25 and is fixedly connected to the locking rod 61. An auxiliary rod 631 is fixedly provided between the locking support rods 63 of the two sets of locking assemblies 6. When assembling the enclosure panel 2, the two sets of locking rods 61 are simultaneously slid by the auxiliary rod 631 to compress the locking spring 62, so that the fixing block 21 is inserted into the first fixing groove 22 and the assembly rod 42 is inserted into the second fixing groove 23. When the auxiliary rod 631 is released, the locking spring 62 returns to its original state, and the locking rod 61 is pushed to insert into the first fixing groove 22 or the second fixing groove 23, so that the fixing block 21 or the assembly rod 42 is inserted into the locking support groove 25, thus completing the locking. The operation is simple and convenient.

[0042] For ease of connection between adjacent step blocks 1, refer to Figure 5 The connecting component 5 includes a connecting spring 53, two first connecting rods 51, and two second connecting rods 52. The second connecting rods are fixed to one end of the first connecting rods 51, and the connecting spring 53 connects the ends of the two first connecting rods 51 away from the second connecting rods 52. A connecting groove 13 communicating with the first assembly groove 11 is provided on the side wall of the step block 1 near the enclosure plate 2. The connecting groove 13 penetrates the bottom wall of the step block 1. The first connecting rods 51 can be inserted into the first assembly groove 11, and the second connecting rods 52 can be inserted into the connecting groove 13. When connecting two parallel step blocks 1, the two first connecting rods 51 are pulled apart to extend the connecting spring 53. The first connecting rods 51 are then inserted into the first assembly groove 11 of the two parallel step blocks 1. After moving to the appropriate position, the first connecting rods 51 are released, the connecting spring 53 returns to its original position, and the second connecting rods 52 are pulled to insert into the connecting groove 13. The second connecting rods 52 press against the inner wall of the connecting groove 13, completing the connection. The operation is simple and convenient.

[0043] For the stability of the connection between the parallel step blocks 1, refer to Figure 4 and Figure 6The assembly rod 42 has a first locking block 422 and a second locking block 423 at the end away from the enclosure plate 2. The second locking block 423 is fixedly disposed between the assembly rod 42 and the first locking block 422. A first locking groove 424 is formed between the assembly rod 42, the first locking block 422, and the second locking block 423. The first locking block 422 is circular and has a second locking groove 4221 on its side wall. The first locking block 422 can be inserted into the first locking groove 424, and the second locking block 423 can be inserted into the second locking groove 4221. When the two step blocks 1 are placed side by side, the first locking blocks 422 on the assembly rod 42 are inserted into the first locking groove 424 on the other assembly rod 42, and the second locking blocks 423 are inserted into the second locking groove 4221 on the other assembly rod 42, connecting the two assembly rods 42 and thus improving the stability of the connection between the side by side step blocks 1. In another embodiment, both ends of the assembly rod 42 are provided with a first locking block 422 and a second locking block 423. The first locking block 422 can be adapted to be inserted into the locking support groove 25, and the first locking block 422 can be adapted to be inserted into the second fixing groove 23. The auxiliary block 231 can be adapted to be inserted into the first locking groove 424, thereby completing the fixing of the step block 1 and the surrounding plate 2. This allows multiple step blocks 1 to be connected side by side, thereby increasing the adjustable range of the width of the constructed staircase.

[0044] The implementation principle of the precast concrete staircase assembly-type universal mold in this application embodiment is as follows: When assembling the mold, the height of the assembly rod 42 in the first assembly groove 11 is adjusted to adjust the height difference between adjacent step blocks 1, so that the mold can produce stair steps with different height differences. Simultaneously, depending on the width of the staircase being manufactured, it is possible to choose whether to assemble the retaining plate 2 at both ends of a single step block 1 or to assemble the retaining plate 2 after placing two step blocks 1 side by side. When assembling the retaining plate 2, the fixing block 21 is inserted into the first fixing groove 22, and the assembly rod 42 is inserted into the second fixing groove 23, while the auxiliary block 231 is inserted into the auxiliary groove 421. The fixing block 21 and the assembly rod 42 are then locked by the locking component 6 to complete the assembly. This mold is easy to assemble and can adjust the step height difference and width according to the specifications of the staircase being manufactured. This allows the mold to be adjusted and reused as needed. Compared to non-adjustable steel molds, this mold has greater applicability, and its reusability makes its amortization cost much lower than that of steel molds, saving significant costs.

[0045] 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 modular universal mold for precast concrete stairs, characterized in that: The system includes several enclosure panels (2) and several step blocks (1), the step blocks (1) abutting against each other, each step block (1) having a fixing block (21) on its sidewall, each enclosure panel (2) having a first fixing groove (22), the fixing block (21) being fitted into the first fixing groove (22), each step block (1) having an assembly component (4) for assembling adjacent step blocks (1), each enclosure panel (2) having a locking component (6) for locking the fixing block (21), and the assembly... The assembly component (4) includes an assembly block (41) and an assembly rod (42). The step block (1) is provided with a first assembly groove (11). The step block (1) is provided with a second assembly groove (12) that communicates with the first assembly groove (11). The assembly rod (42) is slidably disposed in the first assembly groove (11). The assembly block (41) is disposed in the second assembly groove (12). One end of the assembly block (41) is connected to the assembly rod (42). The other end of the assembly block (41) extends out of the second assembly groove (12) and is connected to the adjacent step block (1).

2. The precast concrete staircase assembly-type universal mold according to claim 1, characterized in that: Both the first assembly groove (11) and the second assembly groove (12) penetrate the bottom wall of the step block (1).

3. The precast concrete staircase assembly-type universal mold according to claim 2, characterized in that: The assembly slot passes through the step block (1), the assembly rod (42) passes through the assembly slot, the enclosure plate (2) is provided with a second fixing slot (23), the assembly rod (42) is adapted to be inserted into the second fixing slot (23), and the enclosure plate (2) is provided with another set of locking components (6) for locking the assembly rod (42).

4. The precast concrete staircase assembly-type universal mold according to claim 3, characterized in that: The inner wall of the second fixing groove (23) is provided with an auxiliary block (231), and the assembly rod (42) is provided with an auxiliary groove (421). The auxiliary block (231) can be inserted into the auxiliary groove (421).

5. The precast concrete staircase assembly-type universal mold according to claim 3, characterized in that: The assembly rod (42) is provided with a first locking block (422) and a second locking block (423). The second locking block (423) connects the assembly rod (42) and the first locking block (422). A first locking groove (424) is formed between the assembly rod (42), the first locking block (422), and the second locking block (423). A second locking groove (4221) is provided on the surface of the first locking block (422). The second locking groove (4221) penetrates the side wall of the first locking block (422). The first locking block (422) can be adapted to be inserted into the first locking groove (424), and the second locking block (423) can be adapted to be inserted into the second locking groove (4221). The step block (1) is provided with a connecting component (5). The connecting component (5) is used to connect two step blocks (1) side by side.

6. The precast concrete staircase assembly-type universal mold according to claim 5, characterized in that: The connecting assembly (5) includes a first connecting rod (51), a second connecting rod (52), and a connecting spring (53). The connecting spring (53) connects the two first connecting rods (51). The second connecting rod (52) is located at the end of the first connecting rod (51) away from the connecting spring (53). The side wall of the step block (1) is provided with a connecting groove (13) that communicates with the first assembly groove (11). The first connecting rod (51) can be inserted into the first assembly groove (11), and the second connecting rod (52) can be inserted into the connecting groove (13).

7. The precast concrete staircase assembly-type universal mold according to claim 3, characterized in that: The locking assembly (6) includes a locking rod (61), a locking spring (62), and a locking support rod (63). The enclosure plate (2) is provided with a locking groove (24) that communicates with the first fixing groove (22) or the second fixing groove (23). The locking rod (61) is slidably disposed in the locking groove (24). The locking spring (62) connects the locking rod (61) and the inner wall of the locking groove (24). The locking rod (61) enters the first fixing groove (22) and abuts against the fixing block (21) or enters the second fixing groove (23) and abuts against the assembly rod (42). The side wall of the enclosure plate (2) is provided with a locking support groove (25) that communicates with the locking groove (24). The locking support rod (63) is fixedly connected to the locking rod (61) and is slidably disposed in the locking support groove (25).

8. The precast concrete staircase assembly-type universal mold according to claim 7, characterized in that: The locking rod (61) is provided with a locking slot (611), and the fixing block (21) or the first locking block (422) can be inserted into the locking slot (611).

9. A precast concrete staircase assembly-type universal mold according to claim 7, characterized in that: An auxiliary rod (631) is provided between the locking rods (63) of the two sets of locking components (6), and the auxiliary rod (631) connects the two locking rods (63).

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